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