GB/T 37683-2019 in English
VALIDLarge gear and girth gear forgings-Technical specification
- Issued on:2019-06-04
- Implemented on:2019-06-04
- File Format:PDF
- Delivery:Within 1 day
$109.00
| Standard No: | GB/T 37683-2019 |
| Document status: | VALID |
| Title in English: | Large gear and girth gear forgings-Technical specification |
| Title in Chinese: | 大型齿轮、齿圈锻件 技术条件 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Within 1 day |
| Issued on: | 2019-06-04 |
| Implemented on: | 2019-06-04 |
| Professional Classification: | GB-National Standard |
| Related Keywords: | large gear
girth gear forgings-technical specification introduction standard overview gb/t gear shaft gear rings large castings |
| Related Topics: | large pulley
Gear Cryogenic Technology Ring gear teeth large academic Gear Forgings GBT37683 GB/T 37683-2019 ring gear Rack and pinion inspection Outline marking technical conditions Rack incoming material Forging grade Foreign forging technology gb/t 37683-2019 Flywheel ring gear assembly technology |
《GB/T 37683-2019大型齿轮、齿圈锻件 技术条件》由TC506（全国大型铸锻件标准化技术委员会）归口，主管部门为中国机械工业联合会。
Introduction
Standard Overview
GB/T 37683-2019 "Technical Conditions for Large Gear and Ring Forgings" is a standard for the ordering requirements, manufacturing processes and inspection rules for large gear and ring forgings. This standard is applicable to the field of mechanical manufacturing and mainly involves technical specifications for material grades, chemical composition, mechanical properties, etc.
Comparison of standard frameworks
| Standard dimensions | GB/T 37683—2019 | ISO/TC 14 equivalents | SAC/TC 506 |
|---|---|---|---|
| Material grade | 40Cr, 35CrMo, 42CrMo, etc. | S45C, S60C | N/A |
| Chemical composition range | C: 0.37～0.44, Si: 0.17~0.37, etc. | C: 0.45%, Si: 0.45% | Follow domestic standards |
| Mechanical properties requirements | HBW: 207～269, HV3≥500, etc. | HRB: 45~55 | N/A |
Implementation suggestions
Case analysis: Gear shaft forging process optimization
In actual production, electric furnace or converter smelting process should be preferred, and refining outside the furnace should be carried out to ensure material quality. During the forging process, it is necessary to ensure that the cross section of the forging is uniform to avoid defects such as shrinkage and segregation.
Background of Standardization
This standard was proposed by the National Technical Committee for Standardization of Large Castings and Forgings, and the main drafting unit was Erzhong (Deyang) Heavy Equipment Co., Ltd. The background of its formulation is to unify and standardize the production requirements of large gears and gear rings, improve product quality, and meet the high standards of the machinery manufacturing industry.
Technology Evolution Analysis
From the historical version to GB/T 37683-2019, the main improvements include:
- Refinition of chemical composition range
- Improvement of mechanical properties
- Strengthening of non-destructive testing requirements
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