组别 抗拉强度b/MPa 直径范围/mm 应 用 A1 1180~1380 6.00~7.00 用于较低应力弹簧 A2 1380~1580 3.20~7.00 A3 1580~1780 1.60~6.00 A4 1780~1980 O.60~4.00 用于一般应力弹簧 A5 1980~2180 O.30~2.60 A6 2180~2380 O.30~1.60 A7 2380~2580 0.30~1.00 用于较高应力弹簧 A8 2580~2780 0.30~0.60 A9 2780~2980 O.20~O.40
组别 |
抗拉强度b/MPa |
直径范围/mm |
应 用 |
A1 |
1180~1380 |
6.00~7.00 |
用于较低应力弹簧 |
A2 |
1380~1580 |
3.20~7.00 |
|
A3 |
1580~1780 |
1.60~6.00 |
|
A4 |
1780~1980 |
O.60~4.00 |
用于一般应力弹簧 |
A5 |
1980~2180 |
O.30~2.60 |
|
A6 |
2180~2380 |
O.30~1.60 |
|
A7 |
2380~2580 |
0.30~1.00 |
用于较高应力弹簧 |
A8 |
2580~2780 |
0.30~0.60 |
|
A9 |
2780~2980 |
O.20~O.40 |
行缠绕试验,在直径即是钢丝直径的芯棒上缠绕两圈后表面不得有裂纹或折断。
钢丝直径 答应偏差级别 hlO h11 h12 答应偏差 0.20~O.30 ±0.01 ±O.01 ±O.02 >0.30~O.60 士0.0l ±O.02 ±0.03 >O.60~1.00 ±O.01 ±0.02 ±O.03 >1.00~3.00 ±0.02 ±O.03 ±O.05 >3.00~6.00 ±0.02 士0.04 ±O.06 >6.00~7.00 ±O.03 ±0.05 ±0.08
钢丝直径 |
答应偏差级别 |
||
hlO |
h11 |
h12 |
|
答应偏差 |
|||
0.20~O.30 |
±0.01 |
±O.01 |
±O.02 |
>0.30~O.60 |
士0.0l |
±O.02 |
±0.03 |
>O.60~1.00 |
±O.01 |
±0.02 |
±O.03 |
>1.00~3.00 |
±0.02 |
±O.03 |
±O.05 |
>3.00~6.00 |
±0.02 |
士0.04 |
±O.06 |
>6.00~7.00 |
±O.03 |
±0.05 |
±0.08 |
HLL级供货。2100433B