JB/T 54885-1999
Thread Rolling Dies - Product Quality Grading (Internal Use)
搓丝板 产品质量分等（内部使用）
Catalogue
前言 → 1 范围 → 2 引用标准 → 3 AQL 的指定值 → 4 RQL 的指定值 → 5 不合格分类及分组 → 6 寿命试验 Foreword → 1 Scope → 2 Normative References → 3 Specified AQL Values → 4 Specified RQL Values → 5 Classification and Grouping of Nonconformities → 6 Life Test
Scope
This standard specifies the AQL values for quality grade evaluation, the RQL values for periodic stability assessment, and the classification of nonconformities for thread rolling dies when evaluated according to JB/T 54854. This standard is applicable to the quality grade evaluation and periodic stability assessment of thread rolling dies produced in batches according to GB/T 972.
本标准规定了搓丝板在依据JB/T 54854 进行质量等级评定时的AQL 值、周期稳定性考核时的RQL值及不合格分类。本标准适用于按GB/T 972 成批生产的搓丝板的质量等级评定和周期稳定性考核。
Normative References
Keywords
Application Summary AI generated
This standard is used by tool manufacturers and quality inspection agencies to evaluate the quality grade and periodic stability of thread rolling dies. By specifying AQL and RQL values and classifying nonconformities, it ensures consistent quality and reliability of thread rolling dies, which is critical for quality control in the machining industry.
该标准由刀具生产企业和质量检验机构使用，用于对搓丝板进行质量等级评定和周期稳定性考核。它通过设定AQL和RQL值以及不合格分类，确保搓丝板产品的质量一致性和可靠性，对机械加工行业的质量控制具有重要意义。
AI Summary AI generated
This standard JB/T 54885-1999 is a machinery industry standard for product quality grading of thread rolling dies, for internal use. It specifies the AQL values for quality grade evaluation, RQL values for periodic stability assessment, and classification of nonconformities when evaluated according to JB/T 54854. The standard applies to thread rolling dies produced in batches per GB/T 972. Tables 1 and 2 provide AQL and RQL values for different grades (qualified, first-class, premium), and Table 3 details the items and judgment criteria for Class B and Class C nonconformities. The standard also states that no life test is specified for thread rolling dies.
本标准JB/T 54885-1999是关于搓丝板产品质量分等的机械行业标准，内部使用。它规定了在依据JB/T 54854进行质量等级评定时所需的AQL值、周期稳定性考核的RQL值以及不合格分类。标准适用于按GB/T 972成批生产的搓丝板，通过表1和表2给出了不同等级（合格品、一等品、优等品）的AQL和RQL值，并在表3中详细列出了B类和C类不合格的项目及判定依据。标准还明确搓丝板不规定寿命试验。
Key Sentences extracted from text
本标准规定了搓丝板在依据JB/T 54854 进行质量等级评定时的AQL 值、周期稳定性考核时的RQL值及不合格分类。
本标准适用于按GB/T 972 成批生产的搓丝板的质量等级评定和周期稳定性考核。
AQL 的指定值由表1 给出。
RQL 的指定值由表2 给出。
搓丝板不规定寿命试验。
This standard specifies the AQL values for quality grade evaluation, the RQL values for periodic stability assessment, and the classification of nonconformities for thread rolling dies when evaluated according to JB/T 54854.
This standard is applicable to the quality grade evaluation and periodic stability assessment of thread rolling dies produced in batches according to GB/T 972.
The specified AQL values are given in Table 1.
The specified RQL values are given in Table 2.
No life test is specified for thread rolling dies.
Standard Timeline
Changes from replaced version:
- 根据相应的搓丝板产品标准作了修改
- 在标准C 类不合格中取消了对搓丝板厚度的评定项目
- Modified according to the corresponding thread rolling die product standard
- Removed the evaluation item for thread rolling die thickness in Class C nonconformities