JB/T 4129-1999Burr height of stampings (English PDF)
冲压件毛刺高度
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Issued by
MIIT
Level / Type
Industry · Recommended
Issue date
June 24, 1999
Implementation date
June 24, 1999
Scope
JB/T 4129-1999 is the English-translated version of 冲压件毛刺高度.
JB/T 4129-1999 is the Chinese standard "Burr height of stampings". Its scope clause reads: The value listed in this Standard are conceptually not allowed in the stamping tolerance.
However, general stamping parts come with varying degrees of burrs. When the burr’s height exceeds a certain limit, it will affect the product quality and usage performance.
This Standard applies to the finished metal stamping parts which have certain requirements for burr’s height. It does not apply to the finished parts and precision stamping parts which have special requirements for burrs. Its clauses include definitions; limits of burr’s height.
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Document preview — JB/T 4129-1999
National Standard of the People's Republic of China
- Replacing
- JB 4129-1985
Issued by: Ministry of Industry and Information Technology of the People's Republic of China
Contents
- Foreword3
- 1 Scope4
- 2 Definitions4
- 3 Limits of burr’s height4
- 4 Testing5
1 Scope
The value listed in this Standard are conceptually not allowed in the stamping tolerance. However, general stamping parts come with varying degrees of burrs.
When the burr’s height exceeds a certain limit, it will affect the product quality and usage performance.
This Standard applies to the finished metal stamping parts which have certain requirements for burr’s height. It does not apply to the finished parts and precision stamping parts which have special requirements for burrs.
2 Definitions
This Standard adopts the following definitions.
2.1 Burr’s height for stamping
Burr height for stamping refers to those left-over burrs on the section openings of the finished stamping parts, when the material is stamped. It is shown in Figure 1:
Blanking stamping section Hole-punching section h – Burr’s height;
t - Material thickness of the stamping part;
Figure 1
3 Limits of burr’s height
Limits of stamping burr’s height shall be specified in Table 1.
......
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
Similar standards
Editions of JB/T 4129
| Edition | Title | Revision | Status |
|---|---|---|---|
| JB/T 4129-1999 | Burr height of stampings | current edition | Current |
| JB 4129-1985 | Burr height of stampings | previous edition | Superseded |
This page sells the current edition, JB/T 4129-1999. Earlier editions are listed for reference only.
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