GB/T 37786-2019 in English
VALIDGear steel for numerical control machine tool
- Issued on:2019-08-30
- Implemented on:2020-07-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$243.00
| Standard No: | GB/T 37786-2019 |
| Document status: | VALID |
| Title in English: | Gear steel for numerical control machine tool |
| Title in Chinese: | 数控机床用齿轮钢 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2019-08-30 |
| Implemented on: | 2020-07-01 |
| ICS Classification: | 77.140.60-Steel bars and rods |
| Chinese Classification: | H44-Profile steel and deformed steel |
| Professional Classification: | GB-National Standard |
| Related Keywords: | general domestic gear steel standards
gear steel other domestic gear steel standards numerical control machine tool introduction hot-forged alloy structural steel round steel |
| Related Topics: | CNC machine tool
CNC machine tool Gear mesh GBT37786 gear steel The role of nitrogen tank in CNC machine tools gear steel |
《GB/T 37786-2019数控机床用齿轮钢》由TC183（全国钢标准化技术委员会）归口，TC183SC16（全国钢标准化技术委员会特殊钢分会）执行，主管部门为中国钢铁工业协会。
Introduction
1. Standard Overview
This standard GB/T 37786-2019 specifies the ordering content, classification and code, size, shape, weight, technical requirements, test methods, inspection rules, packaging, marking and quality certificate of bar steel for CNC machine tool gears. It is applicable to the manufacture of hot-rolled or hot-forged alloy structural steel round steel and square steel for CNC machine tool gears.
2. Comparison of standard frameworks
| Standard dimensions | Requirements of this standard | Comparison with international standards | Comparison with industry standards |
|---|---|---|---|
| Grades and classifications | 20CrSH, 40CrSH, etc., are divided into UP and UC according to the processing method | Consistent with relevant ISO standards | Other domestic gear steel standards are slightly different |
| Chemical composition | C: 0.17~0.37%, Si: 0.17～≤0.37%, Mn: 0.50～≤1.30% | Compared with ASTM Similar standards | Meet the needs of domestic high-end manufacturing |
| Mechanical properties | Tensile strength 835~1080 MPa, impact absorption energy 47~63 J | Reaching the international advanced level | Better than the general domestic gear steel standards |
3. Analysis of the background of standard formulation and technological evolution
3.1 Background analysis
With the rapid development of the CNC machine tool industry, the performance requirements for gear steel are constantly improving. The formulation of this standard is intended to meet the needs of high-end equipment manufacturing and promote technological progress in the industry.
3.2 Technological Evolution
From the first draft to the final draft, the standard has undergone many revisions, with a focus on improving the chemical composition control accuracy and mechanical property requirements, and adding a new hardenability index.
4. Implementation Suggestions
- Material Selection Suggestions: Select the appropriate grade according to the working conditions of CNC machine tool gears, and give priority to high hardenability steels.
- Production Control: Strictly control chemical composition deviations, especially sulfur and phosphorus content, to ensure material consistency.
- Testing Focus: Pay attention to hardenability and low-magnification structure inspection to avoid product failure due to internal defects.
- Quality Traceability: Establish a complete production and testing record system to facilitate the tracing and analysis of quality problems.
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