GB/T 4679-2017Diecasting dies - Components - Specifications (English PDF)
压铸模 零件 技术条件
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
September 29, 2017
Implementation date
April 1, 2018
Scope
GB/T 4679-2017 is the English-translated version of 压铸模 零件 技术条件.
GB/T 4679-2017 is the Chinese standard "Diecasting dies - Components - Specifications". Its scope clause reads: This standard specifies the requirements, inspection methods, and marking, packaging and transportation of diecasting die components.
This standard is applicable to diecasting die components. Its clauses include requirements; inspection rules.
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Document preview — GB/T 4679-2017
National Standard of the People's Republic of China
- ICS
- 25.120.30
- Classification
- J 46
- Replacing
- GB/T 4679-2003
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword i
- 1 Scope
- 2 Normative references
- 3 Requirements
- 4 Inspection rules
- 5 Marking, packaging and transportation
1 Scope
This standard specifies the requirements, inspection methods, and marking, packaging and transportation of diecasting die components.
This standard is applicable to diecasting die components.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 145 Center holes
GB/T 230.1 Metallic materials - Rockwell hardness test - Part 1: Test method (scales A, B, C, D, E, F, G, H, K, N, T)
GB/T 231.1 Metallic materials - Brinell hardness test - Part 1: Test method
GB/T 825 Eyebolts
GB/T 1184-1996 Geometrical tolerancing - Geometrical tolerances for features without individual tolerance indications
GB/T 1804-2000 General tolerances - Tolerances for linear and angular dimensions without individual tolerance indications
GB/T 4678 (all parts) Die-casting die components
GB/T 6403.5 Relief grooves for grinding wheels
3 Requirements
3.1
The limit deviation of the dimensions without individual tolerance indications in the drawings shall meet the requirements of Class m in GB/T 1804-2000, Clause 5.
3.2
The shape and position tolerances not noted in the drawings shall meet the requirements of Class H in GB/T 1184-1996, Clause 5.
3.3
The components shall be free of defects such as rust, bumps and dents.
3.4
The materials selected for die components shall meet the technical standards of corresponding designation. Materials with performance superior to those recommended in GB/T 4678 are allowed.
3.5
The components shall have uniform hardness after heat treatment and be free of cracks, decarburization or oxide spots.
3.6
The relief grooves for grinding wheels with dimension unmarked in the drawings shall meet the requirements of GB/T 6403.5.
3.7
The center holes with dimension unmarked in the drawings shall comply with GB/T 145.
3.8
The side reference plane of the die plate should be marked.
3.9
When the mass of components exceeds 15kg, lifting screw holes shall be set up, and eyebolts shall meet the requirements of GB/T 825.
3.10
All components shall be free of burr.
3.11
The chamfers without marked dimension in the drawings shall be (0.5mm~5mm)×45°.
4 Inspection rules
4.1
The components shall be inspected in accordance with GB/T 4678 and this standard.
4.2
Brinell hardness of components shall be inspected in accordance with GB/T 231.1 and Rockwell hardness in accordance with GB/T 230.1.
4.3
The dimensions of components should be measured with general measuring tools, and the shapes and positions should be measured with coordinate measuring machines.
4.4
The components with surface roughness, Ra, lower than 1.6 µm should be tested by roughness measuring instrument, and the rest shall be test by roughness sample piece comparison method (visual comparison).
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
Cited by
- GB/T 4678.20-2025Die casting dies — Components — Part 20: Hoisting columns
- GB/T 44530-2024Die casting dies—Die sets
- GB/T 4678.17-2024Die casting dies—Components—Part 17: Ejector sleeves
- GB/T 4678.18-2024Die casting dies—Components—Part 18: Support pillars
- GB/T 4678.14-2023Die casting dies—Components—Part 14: Limit pins
- GB/T 4678.16-2023Die casting dies—Components—Part 16: Flat ejector pins
Similar standards
Editions of GB/T 4679
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 4679-2017 | Diecasting dies - Components - Specifications | current edition | Current |
| GB/T 4679-2003 | Diecasting dies - Components - Specifications | previous edition | Superseded |
This page sells the current edition, GB/T 4679-2017. Earlier editions are listed for reference only.
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