JB/T 51207-1999
Saw blades for saw gin and saw linter—Product quality grading
锯齿轧花机、锯齿剥绒机锯片 产品质量分等
Catalogue
前言 → 1 范围 → 2 引用标准 → 3 产品的质量等级 → 4 试验方法 → 5 检验规则 → 6 评定规则 Foreword → 1 Scope → 2 Normative References → 3 Product Quality Grades → 4 Test Methods → 5 Inspection Rules → 6 Evaluation Rules
Scope
This standard specifies the quality grade indicators, testing methods, and inspection rules for saw blades of saw gin and saw linter. This standard applies to saw blades of saw gin and saw linter (hereinafter referred to as saw blades).
本标准规定了锯齿轧花机、锯齿剥绒机锯片产品的质量等级指标、检测试验方法和检验规则。本标准适用于锯齿轧花机、锯齿剥绒机锯片（以下简称锯片）。
Normative References
Keywords
Application Summary AI generated
Manufacturers and quality inspection departments use this standard to grade and inspect saw blades for saw gins and saw linters. It defines key parameters such as hardness, thickness, and flatness to ensure consistent product quality and interchangeability. This standard is critical for the reliable operation of cotton processing machinery.
该标准由锯片生产企业和质量检验部门使用，用于对锯齿轧花机和锯齿剥绒机锯片进行质量等级评定和出厂检验。它通过规定硬度、厚度、平面度等关键指标，确保锯片产品的性能稳定性和互换性，对保障棉花加工机械的可靠运行具有重要意义。
AI Summary AI generated
This standard JB/T 51207－1999 specifies quality grades, test methods, and inspection rules for saw blades used in saw gins and saw linters. Products are classified as qualified or first-grade, with key indicators including hardness, average thickness per hundred blades, flatness, bore size, and tooth geometry. Test methods involve hardness measurement, thickness checking, and tooth profile comparison using a projector. Inspection follows batch sampling per GB/T 2828, with nonconformities categorized into A, B, and C classes. This revision cancels the zinc coating thickness requirement and adjusts the sampling plan compared to the previous version.
本标准JB/T 51207－1999规定了锯齿轧花机和锯齿剥绒机锯片的质量等级、试验方法和检验规则。锯片产品分为合格品和一等品，关键指标包括硬度、百片厚度平均值、平面度、内孔尺寸、齿形角度等。试验方法涉及硬度检测、厚度测量、投影仪齿形比较等。检验规则采用逐批抽样，依据GB/T 2828进行，不合格项目分为A、B、C三类。本标准替代了旧版标准，取消了镀锌层厚度指标并调整了抽样方案。
Key Sentences extracted from text
本标准规定了锯齿轧花机、锯齿剥绒机锯片产品的质量等级指标、检测试验方法和检验规则。
按锯片产品的技术水平和质量水平，分为合格品和一等品。
锯片质量指标应符合表1 的规定。
在距齿根5～30mm 的宽度圈上均测三点计算平均值，达不到规定值允许测第二次取较佳值。
采用逐项考核,以百片厚度平均值和不合格分类表中各组达到的最低等级为产品等级。
This standard specifies the quality grade indicators, testing methods, and inspection rules for saw blades of saw gin and saw linter.
According to the technical level and quality level of saw blade products, they are divided into qualified products and first-grade products.
The quality indicators of saw blades shall comply with the provisions of Table 1.
Measure three points evenly on the width circle 5-30 mm from the tooth root and calculate the average; if the specified value is not reached, a second measurement is allowed to take the better value.
Adopt item-by-item assessment, with the product grade determined by the average thickness per hundred blades and the lowest grade reached by each group in the nonconformity classification table.
Standard Timeline
Changes from replaced version:
- 取消了镀锌层厚度的指标及检测方法
- 调整了抽样方案
- Cancelled the index and test method for zinc coating thickness
- Adjusted the sampling plan