JB/T 54261-1999
Product Quality Grading for Measuring Tools and Instruments - Rock Surface Plate
量具量仪产品质量分等 岩石平板
Catalogue
前言 → 1 范围 → 2 引用标准 → 3 合格品 → 4 一等品 → 5 优等品 → 6 等级评定 Foreword → 1 Scope → 2 Normative References → 3 Qualified Product → 4 First-Class Product → 5 Premium Product → 6 Grade Evaluation
Scope
This standard specifies the quality indicators for qualified products, first-class products, and premium products of rock surface plates with accuracy grades 000, 00, 0, and 1. This standard is applicable to the evaluation of quality grades for rock surface plates produced in batches.
本标准规定了精度等级为000 级、00 级、0 级、1级岩石平板的合格品、一等品和优等品的各项质量指标。本标准适用于成批生产的岩石平板质量等级的评定。
Normative References
Keywords
Application Summary AI generated
This standard is used by manufacturers of measuring tools and quality inspection agencies to evaluate the quality grades of rock surface plates. It ensures product precision and reliability by defining specific indicators for qualified, first-class, and premium products. The standard is crucial for maintaining the accuracy of measurement references and improving product quality in the machinery industry.
该标准由量具量仪制造商和质量检验机构使用，用于对岩石平板进行质量等级评定。它通过定义合格品、一等品和优等品的具体指标，确保产品精度和可靠性。该标准对于保证测量基准的准确性、提升机械行业产品质量具有重要意义。
AI Summary AI generated
This standard JB/T 54261-1999 specifies quality indicators for qualified, first-class, and premium products of rock surface plates (accuracy grades 000, 00, 0, 1), including flatness tolerance, surface waviness, material requirements, surface roughness, and concentrated load deflection. It applies to batch-produced products and references standards such as GB/T 1184 and JB/T 7975. Requirements for flatness tolerance and wear resistance test cycles increase progressively from qualified to premium grades.
本标准JB/T 54261-1999规定了岩石平板（精度等级000、00、0、1级）的合格品、一等品和优等品的质量指标，包括平面度公差、平面波动量、材料要求、表面粗糙度、集中载荷挠度等。标准适用于成批生产产品的质量等级评定，并引用了GB/T 1184、JB/T 7975等标准。合格品、一等品和优等品在平面度公差和耐磨寿命试验次数上逐级提高要求。
Key Sentences extracted from text
本标准规定了精度等级为000 级、00 级、0 级、1级岩石平板的合格品、一等品和优等品的各项质量指标。
平板工作面的平面度公差见表1 的规定。
对采用对角线法或网格法检验平板工作面平面度时，应检验其平面波动量，工作面的平面波动量见表2 的规定。
平板工作面上不得有严重影响外观和使用性能的砂孔、气孔、裂纹、夹渣、缩松、划痕、碰伤和锈迹等缺陷。
对岩石平板进行50000 次耐磨寿命试验后，其工作面的平面度应符合表1 的规定。
This standard specifies the quality indicators for qualified products, first-class products, and premium products of rock surface plates with accuracy grades 000, 00, 0, and 1.
The flatness tolerance of the working surface of the surface plate is specified in Table 1.
When checking the flatness of the working surface of the surface plate using the diagonal method or grid method, the surface waviness shall be checked, and the surface waviness of the working surface is specified in Table 2.
The working surface of the surface plate shall not have defects such as sand holes, blowholes, cracks, slag inclusions, shrinkage porosity, scratches, bruises, and rust that seriously affect appearance and performance.
After 50,000 cycles of wear resistance test on the rock surface plate, the flatness of its working surface shall comply with the provisions of Table 1.
Standard Timeline
Changes from replaced version:
- 本标准与JB/T 54261—94 的技术内容一致，仅按有关规定重新进行了编辑。
- The technical content of this standard is consistent with JB/T 54261-94, only re-edited according to relevant regulations.