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    Regulations · Research
  • Regulations · Research
    Fu Yaoqin
    Abstract ( )   Knowledge map   Save
    This paper conducts a comparative analysis of the revisions between GB/T 17685—2026 "Down and feather"and GB/T 17685—2016 "Down and feather" from the aspects of scope, normative referenced documents, terms and definitions, product classification, quality requirements, test methods and judgment rules. Corresponding suggestions for the implementation of the new standard are also put forward.
  • Regulations · Research
    Zhang Yicheng1, Qu Rongrui2, Zhao Wei2
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    The GB/T 8939—2025 standard for "Sanitary absorbent pads (panty liners)" will come into effect on January 1, 2027, completely replacing the current standard GB/T 8939—2018. This article conducts a systematic comparison from aspects such as standard frameworks, physical indicators, usage performance, safety indicators, test methods, inspection rules, and packaging markings. It highlights the key technical differences to provide a reference for enterprises to improve product quality in production, sales, and other links. At the same time, it strengthens testing institution personnel's understanding of new standards and standardized operations to ensure that the final products meet the standard requirements.
  • Regulations · Research
    Zhao Na, Wang Zixin, Guan Ning, Cong Lin, Shao Jiajia
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    This paper interprets the main contents of the 2015 and 2025 editions of FZ/T 73053 "Knitted down garments", and compares the key technical indicators between the new and old standards, including the physical and chemical properties of internal quality, appearance quality, as well as testing methods. It aims to help third-party testing institutions and manufacturing enterprises understand and apply the standard, so as to promote the high-quality development of products.
  • Regulations · Research
    Liu Qingqing
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    GB 18383—2025 "General technical requirements for products with filling materials" was issued on December 2, 2025 and will be enforced on July 1, 2026. This paper interprets the standard in detail, elaborating on the changes in the scope of application and technical requirements, and analyzes the content differences between the standard and the current relevant standards, providing a reference for the production application and supervision and inspection of with filling materials.
  • Regulations · Research
    Wang Xiaojin
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    GB 28895—2025 "Protective clothing—Oil-repellent, soil-release, antistatic protective clothing" shall come into force officially on September 1, 2026, completely superseding the recommended standard GB/T 28895—2012. This standard has been upgraded from a recommended standard to a mandatory one, with systematic revisions made to its scope of application, technical requirements, test methods, inspection rules and other provisions. By comparing the core differences between the new and old editions, this paper analyzes the industrial demands and safety rationale behind the revision. Combined with practical working scenarios in key fields including petroleum and petrochemical industries, it elaborates on the development orientation of the oil-repellent, easy-to-clean and anti-static protective clothing sector, and supports its standardized and high-quality development.
  • Regulations · Research
    Ding Huan
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    GB/T 35270—2024 "Baby carriers" is a crucial national standard in China's infant and child carrier product sector. This paper aims to objectively analyze the technical content and industrial impact of this revision. By comparing the new and old standards, it systematically elaborates on specific changes in chemical safety indicators, structural safety testing methods, harness safety specifications, and appearance requirements. Combining recent product recall cases, it explores how these technical modifications address safety risks in practical use. The analysis reveals that the new standard establishes a more risk-targeted technical evaluation system through measures such as dynamic load testing, expanded chemical substance control lists, and quantified harness design parameters, significantly enhancing product quality and guiding industrial technological upgrades.
  • Monitoring · Credit
  • Monitoring · Credit
    Guo Shanshan1, Long Dongmei1, Gao Rongbo2, Sun Zhenshan2
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    Against the backdrop of rapid development of the market economy, customer satisfaction exerts a profound impact on the sound development of relevant industries. Taking Hebei Province as a research sample, this paper addresses the complex market challenges confronting inspection and testing institutions. Based on thorough investigations and comprehensive sorting-out of the development status of the inspection and testing industry across the province, it identifies and analyzes deficiencies and drawbacks existing in institutions' efforts to boost customer satisfaction. Centered on establishing a modern inspection and testing service system, this study targets four core solutions: service environment optimization, competency enhancement, industrial support and collaborative joint governance, and puts forward practical and feasible strategies for inspection and testing institutions to raise customer satisfaction.
  • Monitoring · Credit
    Jiang Jinping1, Sun Cong2, Zhang Huan1, Bian Xianke2, Liu Yang2, Wu Yujie2, Lv Bowen2
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    Live streaming has become an important marketing model in the e-commerce industry. Its characteristics such as immediacy and data complexity pose new challenges for quality supervision and sampling verification. This article analyzes and compares the two sampling modes of manual monitoring and AI monitoring from the perspective of textile products, revealing the differences in their operation mechanisms, judgment standards, and implementation costs. It concludes that the e-commerce sampling path requires the collaboration and complementary advantages of the two methods. The aim is to provide theoretical references for the optimization of the sampling mode for live-streaming e-commerce of textile products, and to contribute to the standardized development of the industry.
  • Testing · Technology
  • Testing · Technology
    Du Weidong, Zhang Qian, Zhao Hui
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    Cotton is the primary natural raw material in the textile industry, and its fiber quality directly affects the quality of yarns, the appearance and style of fabrics, and the overall wearing value of textile products. Quality indicators such as fiber length, uniformity, micronaire value, breaking tenacity, color grade, processing quality, foreign fibers, and short fiber content influence the stability of spinning and weaving, the effectiveness of dyeing and finishing, and the comprehensive quality of finished textile products. Based on the GB 1103.1—2023 standard, this paper systematically analyzes the impact of various cotton fiber quality indicators on the appearance color, mechanical strength, hand comfort, dyeing performance, and service life of textile products, clarifying the intrinsic relationship between raw cotton quality and finished fabric quality. The research results provide a theoretical basis and practical reference for textile enterprises to scientifically conduct cotton blending and material selection, optimize production processes, and strengthen whole-process quality control, holding significant practical value for enhancing the quality and market competitiveness of cotton textile products.
  • Testing · Technology
    Xu Lin1, Wang Ru2
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    To achieve the rapid and non-destructive discrimination of cashmere and wool fibers, this study employs near-infrared (NIR) spectroscopy to acquire spectral data from samples, integrating feature selection and ensemble learning techniques to construct a classification model. First, spectral preprocessing using Detrend to mitigate baseline drift and scattering interference; subsequently, the ICO-CARS algorithm is utilized to select characteristic variables. Finally, a Stacking classification model is constructed using LightGBM, RBF-SVM, and KNN as base learners, with Logistic Regression serving as the meta-learner. The results indicate that cashmere and wool spectra exhibit similar overall trends and significant peak overlap, rendering direct discrimination challenging. Following preprocessing and feature selection, the dimensionality of the model’s input is reduced, resulting in enhanced classification performance. The established Stacking model effectively discriminates between cashmere and wool samples, thereby providing a technical reference for the rapid detection and quality control of textile fibers.
  • Testing · Technology
    Lu Yuxing, Li Sheng
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    The towel fiber shedding rate is a critical indicator for evaluating durability and quality grading. However, the current national standard method (GB/T 22798—2019), which relies on the "conditioned weight" under standard atmospheric conditions, frequently exhibits abnormal results in practice, where the post‑wash weight increases rather than decreases, yielding negative shedding rates. Through controlled comparative experiments, this study identifies that the primary cause is the washing‑induced removal of finishing agents from functional towels, which significantly alters the surface hydrophilicity of fibers, leading to a substantial rise in moisture regain after washing. This increased water absorption masks the actual fiber loss. To address this issue, we propose replacing the weighing basis from "conditioned weight" to "absolute dry weight", and changing the drying method from"tumble drying" to "flat oven drying". The results confirm that the optimized method effectively eliminates the systematic error caused by changes in moisture regain, allowing the shedding rate to truly reflect the actual fiber loss. The improved procedure is operationally feasible, yields stable data, and provides a meaningful reference for enhancing the accuracy of towel fiber shedding rate testing.
  • Testing · Technology
    Huang Linna
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    To improve the technical level of quality inspection in laboratories and strengthen the construction of quality management system, the lab participated in the capability verification project for the determination of tensile breaking force of textiles. According to the standard method GB/T 3923.1—2013 "Textiles—Determination of tensile properties—Part 1: Measurement of breaking strength and breaking elongation (strip method)", the proficiency testing was conducted through conditioning, sample preparation, preliminary experiments to determine experimental parameters, measurement of tensile breaking strength, personnel comparison for quality control and data compilation, and improved measures were proposed. The proficiency testing evaluation result was"satisfactory". This paper analyzes and discusses the factors that may affect the experimental results, and proposes improvement measures.
  • Testing · Technology
    Xu Jie1, Ge Qiangsheng2
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    The group standard T/GDBX 011—2019 "High-Quality Down Products" has drawn extensive attention and been widely adopted by enterprises engaged in down production and downstream terminal application. Nevertheless, prominent defects have been identified during practical testing, including poor inter-laboratory consistency of test results and generally low measured values. On the basis of the test method specified in T/GDBX 011—2019, this paper systematically investigates and analyzes the influence laws of air blowing duration, mesh count as well as material of dust shielding mesh and dust collection mesh on the measured dust content of down and feathers. Results indicate that when the air blowing time is set to 200 seconds, the upper dust shielding mesh adopts a 400-mesh nylon screen, and the dust collection mesh adopts a 100-mesh stainless steel screen, the measured dust content is well matched with the actual dust generated in industrial production, accompanied by superior test result consistency.
  • Testing · Technology
    Zhang Guohua
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    The current standard for gambiered canton silk products specifies the use of soap in the washing solution for wash fastness testing, which causes the surface of gambiered canton silk to whiten, resulting in generally poor color fastness performance, low product pass rates, and an inability to effectively differentiate differences in the color fastness performance of gambiered canton silk. Therefore, it is deemed unsuitable for assessing gambiered canton silk. More seriously, this can also lead consumers to wash gambiered canton silk with soap, causing post-wash whitening that affects both aesthetics and usability. Through comparative testing, this paper elucidated the causes of gambiered canton silk whitening and analyzed the test data. The findings indicated that GB/T 12490—2014 "Textiles—Tests for colour fastness—Colour fastness to domestic and commercial laundering" A1S method was more suitable for evaluating the wash fastness of gambiered canton silk. It is recommended that this method be adopted when revising or establishing standards for gambiered canton silk products.
  • Testing · Technology
    Gong Xinyu1, Ma Yu1, Li Rui2, Shu Qin3, Liao Qishu4, Xu Jing5
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    ​ This study focuses on saw-toothed processed fine-staple cotton as the research object. Combined with the actual climatic conditions in Xinjiang and laboratory environments, an intelligent rapid impurity analyzer was used as the testing equipment. Static electricity (qualitative indicator) and impurity content results (quantitative indicator) were employed as evaluation metrics to preliminarily investigate the effects of different cotton moisture regain rates and environmental humidity levels on static electricity during impurity content testing. The results indicate that static electricity phenomena in impurity content testing occur only when low-moisture-regain cotton samples are tested under low-humidity environmental conditions. Appropriately increasing either the cotton moisture regain rate or the environmental humidity can effectively resolve the static electricity issues encountered during impurity content testing.
  • Testing · Technology
    Jin Rongchen
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    Cotton stickiness is a critical defect that constrains spinning efficiency and product quality. Its essence lies in the phase transition of insect honeydew sugars adhering to fiber surfaces under coupled thermal-mechanical conditions during processing, forming viscous liquid films at the fiber-equipment interface and causing adhesion, entanglement, and clumping. This paper elaborates on the chemical composition and thermophysical properties of honeydew sugars, describes their glass transition and melting behavior under heating, and reveals the micromechanism of interfacial wetting, spreading, and adhesion force formation. The transmission pathway and cumulative effects of stickiness across processing stages from opening to spinning are analyzed, elucidating the causal chain of "sugar softening-fiber adhesion-entanglement-breakage and defects". Detection technologies including chemical sugar testing, the manual hot roller method, and the automatic hot drum method are compared in terms of principles, applicability, and correlation with actual processing stickiness, highlighting the superior predictive validity of the automatic hot drum method due to its direct simulation of thermal roller conditions. For prevention and control, technical approaches are proposed from three dimensions: source management (pest control and timely harvesting), process regulation (temperature-humidity optimization and anti-stick equipment), and biodegradation (enzymatic desticking). Based on the practice of machine picked cotton notarized inspection in Changji, Xinjiang, suggestions for industry development are put forward, including establishing a unified national stickiness grading standard, incorporating stickiness indices into the notarized inspection system, and developing online monitoring equipment.
  • Testing · Technology
    Chen Lingyun1,2, Zhang Danping1,2
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    Based on the capacitive yarn evenness test standard GB/T 3292.1—2008, parallel comparative tests were carried out on T/R70/30 21 ring spun yarns and cone yarns produced by siro compact spinning under identical test conditions, using two different yarn evenness testers. The test difference patterns of indexes including CVm value, thin places, thick places and neps were systematically analyzed. The results show that the relative deviation of CVm values between the two instruments ranges from 2% to 6%, indicating good data consistency; however, there is a systematic deviation of approximately 50% in the counting of thick places and neps, while the test results of thin places are basically consistent. Combined with practical scenarios such as market supervision, enterprise production quality control and foreign trade, this paper proposes scenario-specific application schemes for the instruments and puts forward optimization directions for domestic instruments, which can provide practical references for quality control of textile testing institutions and yarn manufacturing enterprises, as well as technological upgrading of domestic instruments.
  • Testing · Technology
    Wen Shu1, Li Feng2, Wang Li1, Yin Jiafu1, Wang Jingjie1
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    This paper mainly analyzes the quality control issues in the main sensory inspection process of textiles. Sensory inspection is an important method for textile quality testing, including color fastness visual rating, hair and balling rating, appearance rating, odor assessment, fiber qualitative analysis, etc. Since sensory inspection mainly relies on manual evaluation, the inspection results are easily influenced by both subjective factors of personnel and external environmental conditions. Therefore, quality control is particularly crucial. Starting from the specific steps of sensory inspection, this paper analyzes the quality control difficulties existing in the inspection process and proposes specific quality control solutions based on actual work practice, in order to improve the accuracy and reliability of textile sensory inspection and promote the development of the textile inspection industry.
  • Testing · Technology
    Zheng Jiahui, Wang Lei, Dong Jianwei, Zhou Shuo
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    The physical properties of textile materials directly determine their wearability, processability, and end-use applications. As textile materials evolve toward functional, intelligent, and composite systems, traditional physical testing methods face increasingly severe challenges in terms of accuracy, efficiency, and non-destructiveness. This paper systematically reviews recent advances in physical testing methods for textile materials, covering five major directions: low-stress mechanical property testing, thermal property testing, spectroscopic analysis, terahertz and ultrasonic nondestructive testing, as well as performance characterization of conductive textiles. On this basis, the principles and advantages, applicable scenarios, and challenges of various emerging testing methods are analyzed, and development trends such as artificial intelligence integration and multi-technique synergies are discussed, aiming to provide a reference for innovation and application of textile material testing technologies.
  • Application · Reflection
  • Application · Reflection
    Lin Fengxi
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    This article direct dye extraction from Solidagocanadensis L. using both alcohol method and boiling water method, and comparing K/S values and method variables. Method variables include dyeing temperature, time, pH, extraction concentration, and other factors on silk dyeing results. Alcohol extraction dyeing process 1 parameters: concentration 25 g/L, 90 ℃, 70 min, dyeing pH 4.
  • Application · Reflection
    Niu Fengying1, Wu Caichao2, Dong Huiling1, Hou Dekun1, Zhao Ruijun1, Bi Chongming1
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    Ultra-high molecular weight polyethylene (UHMWPE) fiber is a high-performance organic fiber with excellent comprehensive properties at present. Relying on outstanding advantages such as light weight and high strength, low elongation, high wear resistance, seawater corrosion resistance and self-lubrication, it has become a core material for the fishing tackle industry to achieve product upgrading and performance breakthrough. Based on the structural characteristics and key performance indicators of UHMWPE fiber, this paper systematically expounds its application status and technical characteristics in fishing lines, competitive nets, fishing tackle accessories and composite material components. It also analyzes the practical problems existing in the current industrial development, including cost control, knot strength, product uniformity and testing standards. Combined with the development trend of recreational fishing, competitive angling and ocean fishing equipment in China, the paper comprehensively prospects the technological innovation direction, market prospect and standardization construction of UHMWPE fiber in the fishing tackle industry, so as to provide theoretical reference and technical support for the in-depth application, quality improvement and high-quality industrial development of high-performance fibers in the fishing tackle field of China.
  • Application · Reflection
    Li Jing, Yuan Yulu, Yuan Yinxia, Qiu Xingwei
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    ​ Woolen fabric, as a classic material for autumn and winter apparel, has long held a prominent position in the high-end fashion market due to its excellent warmth retention, crisp texture, and rich historical heritage. However, with contemporary consumers’ increasing demand for personalization, cultural depth, and functionality, traditional woolen products face challenges such as stylistic homogeneity, rigid craftsmanship, and insufficient cultural added value. In recent years, academia and industry have conducted multidimensional explorations around technological innovation and cultural empowerment of woolen materials: on one hand, breakthroughs in structure and performance have been achieved through 3D weaving, refined finishing, and digital technologies; on the other hand, the systematic integration of intangible cultural heritage techniques, such as Su embroidery, Qin embroidery, and papercutting, into the design system has significantly enhanced the artistic distinctiveness and cultural value of products.This paper systematically reviews innovations in woolen materials' structural design, production technology, digital enablement, and integration of traditional crafts. Research indicates that the high-quality development of the woolen industry requires further crossdisciplinary collaboration: while preserving the essence of traditional craftsmanship, digital technologies should be leveraged to improve design efficiency and precision, and new paths for intelligent and green manufacturing must be actively explored.
  • Application · Reflection
    Yang Kai, Xu Changyong
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    Based on reform practices in multiple regions, this paper systematically analyzes the current dilemmas and innovative explorations in integrating grassroots inspection and testing institutions with market supervision, proposing an optimization path from "physical superposition" to "chemical fusion". The study argues that the essence of supervision-inspection integration lies in the deep coupling of administrative oversight and technical support, requiring coordinated efforts in four dimensions—mechanism design, information sharing, capacity building and legal safeguards, in order to construct a closed-loop governance system encompassing monitoring-inspection-enforcement-feedback, ultimately achieving a 1+1>2 regulatory efficacy.
  • Fiber Inspection · Development
  • Fiber Inspection · Development
    Wang Xueli, Zhou Junhua, Hua Ningning, Li Jiawei
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    Against the background of building a quality powerhouse, fiber inspection work plays a vital role in safeguarding industrial chain quality and driving industrial upgrading. High-quality development of inspection institutions requires solid Party building guidance. Relying on three national inspection platforms, the Third Organ Party Branch of Binzhou Inspection and Testing Center has innovatively implemented the "Five Integrations and Five Promotions" working method. It realizes the in-depth integration of ideology, organization, business, service and mechanism, effectively solving the disconnection between Party building and business work. Organizational advantages are converted into testing efficiency and industrial service capacity, strongly empowering the new quality productive forces of regional textile, fishing gear and kitchenware industries. Having been awarded the title of Five-Star Party Branch for five consecutive years, the branch provides valuable practical experience for similar institutions.
  • Industry · Analysis
  • Industry · Analysis
    Li Haiyang, Tao Siqi
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    Carbon fiber composite materials are strategically important new materials for high-end equipment and new energy sectors. At present, China ranks first globally in terms of carbon fiber production capacity, and the industry has entered a transformation stage focused on improving quality and efficiency. Jilin City boasts a domestically integrated full carbon fiber industrial chain with prominent production capacity advantages, yet it faces structural drawbacks featuring large industrial scale but weak core competitiveness. Based on industrial economics and value chain theories and combined with field investigations, this paper sorts out the development bottlenecks constraining Jilin's carbon fiber industry, including insufficient high-end technologies, low added value of downstream products, high factor costs, and an imperfect innovative talent system. Accordingly, optimization paths are proposed from the perspectives of technological upgrading, industrial chain value increment, industrial chain supplement and investment attraction, cost reduction and efficiency improvement, as well as the construction of an industry-university-research innovation system. This research can provide references for the high-quality upgrading of Jilin City's carbon fiber industry, and also offer experience for the differentiated development of domestic carbon fiber industrial clusters.
  • Industry · Analysis
    Chen Xuefei
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    From the perspective of Marxist political economy, this paper explores the mutual promotion mechanism between rural revitalization and China’s textile industry under the dual circulation development pattern. The study finds that the textile industry deeply engages in rural revitalization through three approaches: gradient transfer of industrial clusters, empowerment driven by digital technologies, and industrialization of cultural resources. The eastern regions retain high-value links in the industrial value chain relying on intelligent transformation; counties in central and western China develop characteristic industrial clusters by undertaking transferred production capacity; and intangible cultural heritage craftsmanship is translated into cultural and creative industries. The research concludes that efforts should be made to expand the application of the industrial internet, further develop circular economy, and innovate pathways for the industrialization of distinctive culture in the future, so as to offer Chinese solutions for fostering a new type of relationship between industry and agriculture, urban and rural areas.
  • Industry · Analysis
    Li Bo, Han Yu, Li Qi
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    Through a survey of 452 employees in the textile industry, this article, based on the theory of the "job demands-resources model", examines the impact of the sense of perceived substitution of AI technology on employees' turnover intention, as well as the role mechanisms of job insecurity and emotional exhaustion in this process. The results show that the sense of AI substitution can significantly promote turnover intention, and job insecurity and emotional exhaustion play a chain-mediated role in this. The research results enrich the application of the "job demands-resources model" in the context of emerging technologies, and provide a theoretical basis for the human resource management and employee psychological intervention of textile enterprises during the digital transformation period.
  • Management · Discussion
  • Management · Discussion
    Zhang Xiyu, Zhou Hongrui
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    Tussah silk is a natural protein fiber. Its flat ribbon-shaped cross-section, fine longitudinal grooves and internal irregular micropores endow it with excellent moisture absorption and wicking properties as well as skin-friendly characteristics. In the design of blended yarns, blending tussah silk with naturally colored cotton at a ratio of 30:70, combined with reasonable adjustment of carding process parameters, can effectively improve yarn evenness and achieve functional complementarity of the two fibers, providing a practical basis for the development of green functional textiles.
  • Management · Discussion
    Jia De
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    Composite materials are prone to developing defects during their preparation and service processes, and their properties can be altered by corrosive environments, thereby affecting the safety and reliability of pressure vessels. This paper focuses on fiber-reinforced composite pressure vessels and systematically investigates the characterization of their mechanical properties, corrosion resistance, defect status, and residual load-bearing capacity. It provides reliable technical support and theoretical basis for the inspection, quality control, and safety assessment of fiber-reinforced composite pressure vessels.
  • Management · Discussion
    Sheng Jianping, Zhang Lei, Lv Pengfei
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    Due to industrial characteristics including long industrial chains, prominent seasonal fluctuations and complex account period structures, apparel enterprises have long been confronted with the dilemma of cash flow imbalance. Centered on credit transmission of core enterprises, supply chain finance acts on cash flow nodes in the procurement, production and sales links respectively via instruments such as order financing, inventory pledge and accounts receivable securitization. Derived from theoretical model deduction and verification of typical cases, the intervention of supply chain finance markedly narrows capital gaps at the procurement end, revitalizes idle capital trapped in inventory at the production end, and improves the capital recycling efficiency at the sales end. The research conclusion demonstrates that supply chain finance generates multi-link and quantifiable positive optimization effects on the cash flow of apparel enterprises.
  • Management · Discussion
    Li Na, Guo Min, Jia Yanqin, Gu Daohe, Deng Aihua
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    This paper conducts a systematic study on the application logic of metrological inspection and testing technology in quality systems. It examines the intrinsic coupling relationship between metrological inspection and testing technology and modern quality systems, and analyzes prominent issues in the current application process, such as incomplete coverage of process links, insufficient technological synergy, and inadequate value exploitation. An innovative application framework is proposed from three aspects: full-process embedding, digital empowerment, and indicator-based evaluation. The study broadens the research perspective on the value of metrological technology in the field of quality systems, and provides a theoretical reference for different industries to optimize their quality control systems.
  • Management · Discussion
    Bao Zhaoli, Zong Yang, Cui Zhe, Li Chuanshan
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    The inspection and testing of electrical explosion-proof equipment constitutes a core technical means for controlling electrical safety in hazardous locations and implementing the primary responsibility for work safety, covering the entire life cycle of equipment selection, installation, operation, and maintenance. Based on the actual operations in hazardous locations of industrial and mining enterprises, this paper defines the core connotation and scope of work of the inspection and testing of electrical explosion-proof equipment, systematically analyzes the prominent problems existing in the current inspection and testing work, such as technical shortcomings, management loopholes, and an imperfect system, and puts forward targeted optimization and improvement countermeasures. The aim is to strengthen the electrical safety control in hazardous locations, consolidate the defense line of enterprise work safety, and provide a reference for the explosion-proof quality inspection work in the industry.
  • Management · Discussion
    Li Jilei, Fang Xiaoxue, Zhao Qianru, Wei Jie
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    Statistical sampling techniques are a core component of the quality control system, and their optimized application directly affects the product quality stability and production efficiency of manufacturing enterprises. Traditional fixed sampling methods, when dealing with modern complex production environments, reveal problems such as insufficient inspection accuracy and imbalanced cost control, which urgently require systematic technical improvement. Through an in-depth analysis of mathematical foundations such as probability distribution theory and the central limit theorem, combined with the practical needs of quality control in terms of stability assessment and defect rate quantification, an optimization framework based on a dynamic sampling plan and Bayesian adaptive theory is constructed. Industrial application verification shows that the optimized statistical sampling technique can significantly reduce inspection costs and effectively enhance the sensitivity of defect detection, providing scientific and effective technical support for quality management in the manufacturing industry.
  • Management · Discussion
    Wang Honglei
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    As a metrological standard device, the portable digital temperature calibrator can effectively address the problems of long disassembly and dispatch cycles and significant production downtime losses in industrial thermal instrumentation metrology verification Focusing on the field application of this instrument, its technical characteristics and functional principles are systematically elaborated, and on-site verification methods and operational specifications for thermocouples, resistance temperature detectors (RTDs), and temperature indicating instruments are proposed. Application verification is carried out using the heat medium system of a chemical fiber enterprise as an example. The results indicate that compared with the traditional dispatch verification mode, the on-site verification mode improves efficiency by 85.6% and reduces labor input by 75%. The combined standard uncertainty at the 300 ℃ verification point is 0.50 ℃ (k=2), meeting the on-site verification requirements for Class II industrial temperature instruments.