- 產(chǎn)品
- 供應(yīng)
- 公司
- 新聞
|
|
||||||||||||||||||||||||||||
|
鋼種
|
力學(xué)性能
|
冷拔(軋)管
|
金切管
|
|
20#
|
抗拉強(qiáng)度σbN/mm2
伸長率δ5%
|
≥510
|
≥390
|
|
≥5
|
≥20
|
||
|
45#
|
≥647
|
≥590
|
|
|
≥4
|
≥4
|
|
加工形式
|
缸徑
|
長度
|
直線度
|
尺寸精度
|
內(nèi)孔粗糙度
|
|
冷軋
|
30-100
|
≤12M
|
0.3-1.0
|
H8-H10
|
0.4-1.6
|
|
冷拔
|
30-250
|
≤12M
|
H8-H10
|
0.8-1.6
|
|
|
珩磨
|
40-500
|
≤12M
|
1000
|
H8-H9
|
0.4-0.8
|
|
滾壓
|
40-400
|
≤7M
|
H8
|
0.4
|
|
尺寸公差(壁厚偏差±5%)
|
|||
|
內(nèi)徑尺寸
|
H8
|
H9
|
H10
|
|
30
|
+0.033
0
|
+0.052
0
|
+0.084
0
|
|
＞30-50
|
+0.039
0
|
+0.062
0
|
+0.100
0
|
|
＞50-80
|
+0.046
0
|
+0.074
0
|
+0.120
0
|
|
＞80-120
|
+0.054
0
|
+0.087
0
|
+0.140
0
|
|
＞120-180
|
+0.063
0
|
+0.100
0
|
+0.160
0
|
|
＞180-250
|
+0.072
0
|
+0.115
0
|
+0.185
0
|
|
＞250-315
|
+0.081
0
|
+0.130
0
|
+0.210
0
|
|
＞315-400
|
+0.089
0
|
+0.140
0
|
+0.230
0
|
