JB/T 54874-1999
Rotary and Rotary-Impact Carbide Masonry Drills - Product Quality Grading (Internal Use)
旋转和旋转冲击式硬质合金建工钻 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, RQL values for periodic stability assessment, classification of nonconformities, and life tests for rotary and rotary-impact carbide masonry drills when evaluated according to JB/T 54874. This standard applies to the quality grade evaluation and periodic stability assessment of rotary and rotary-impact carbide masonry drills produced in batches according to GB/T 6335.
本标准规定了旋转和旋转冲击式硬质合金建工钻在依据JB/T 54874 进行质量等级评定时的AQL值、周期稳定性考核时的RQL值、不合格分类及寿命试验。本标准适用于按GB/T 6335 成批生产的旋转和旋转冲击式硬质合金建工钻的质量等级评定和周期稳定性考核。
Normative References
Keywords
Application Summary AI generated
Quality inspectors in machinery manufacturing and construction industries use this standard to evaluate the quality grade and periodic stability of rotary and rotary-impact carbide masonry drills. It sets AQL and RQL values, defines nonconformity classifications, and specifies life test requirements to ensure consistent product quality. This standard is crucial for ensuring the reliability and service life of masonry drills.
机械制造和建筑行业的质检人员使用本标准，对旋转和旋转冲击式硬质合金建工钻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、明确不合格分类及寿命试验要求，确保产品符合统一的质量标准。该标准对于保证建工钻的可靠性和使用寿命至关重要。
AI Summary AI generated
This standard specifies quality grading requirements for rotary and rotary-impact carbide masonry drills, including AQL values, RQL values, nonconformity classification, and life tests. It applies to products manufactured in batches according to GB/T 6335. Products are classified into qualified, first-grade, and premium grades, each with specific AQL and RQL values. Nonconformities are divided into Class B (further grouped into three subgroups) and Class C. Life tests define test conditions, criteria, and indicators, including drilling machine, test block, cutting parameters, and use average life and coefficient of variation as evaluation metrics.
本标准规定了旋转和旋转冲击式硬质合金建工钻的质量分等要求，包括AQL值、RQL值、不合格分类及寿命试验。适用于按GB/T 6335成批生产的产品。标准将产品分为合格品、一等品和优等品，并针对不同等级设定了AQL和RQL值。不合格项目分为B类和C类，B类又细分为三组。寿命试验规定了试验条件、判据和指标，包括钻机、试坯、切削规范等，并以平均寿命和变异系数作为评价指标。
Key Sentences extracted from text
本标准规定了旋转和旋转冲击式硬质合金建工钻在依据JB/T 54874 进行质量等级评定时的AQL值、周期稳定性考核时的RQL值、不合格分类及寿命试验。
本标准适用于按GB/T 6335 成批生产的旋转和旋转冲击式硬质合金建工钻的质量等级评定和周期稳定性考核。
AQL 的指定值按表1。
RQL 的指定值按表2。
不合格分类及分组按表3。
This standard specifies the AQL values for quality grade evaluation, RQL values for periodic stability assessment, classification of nonconformities, and life tests for rotary and rotary-impact carbide masonry drills when evaluated according to JB/T 54874.
This standard applies to the quality grade evaluation and periodic stability assessment of rotary and rotary-impact carbide masonry drills produced in batches according to GB/T 6335.
The specified AQL values are given in Table 1.
The specified RQL values are given in Table 2.
The classification and grouping of nonconformities are given in Table 3.
Standard Timeline
Changes from replaced version:
- 本标准是对JB/T 54874—93《建工钻 产品质量分等》的修订。
- 由于建工钻产品标准已修订，故本标准对JB/T 54874—93 的相应条款作了修订。
- 本标准自实施之日起代替JB/T 54874—93。
- This standard is a revision of JB/T 54874-93 'Masonry Drills - Product Quality Grading'.
- Due to the revision of the product standard for masonry drills, this standard revises the corresponding clauses of JB/T 54874-93.
- This standard replaces JB/T 54874-93 from the date of implementation.