热锻工艺321
界说
钢管是指两头启齿并存在中空断面，其长度与周边之比拟年夜的钢材，按消费办法可分为无缝钢管跟焊接钢 管，钢管的规格用形状尺寸〔如外径或边长〕及壁厚表现，其尺寸范畴非常广，从直径非常小的毛细管直到直
径达数米的年夜口径管。钢管可用于管道、热工装备、机器产业、石油地质勘察、容器、化学产业跟特别用 途。
分类
钢管分无缝钢管跟焊接钢管〔有缝管〕两年夜类。按断面形状又可分为圆管跟异形管，普遍运用的是圆形钢
管，但也有一些方形、矩形、半圆形、六角形、等边三角形、八角形等异形钢管。
管都要进展液压试验来测验其耐压才能跟品质，在规则的压力下不发作走漏、浸润或收缩为及格，有些钢 管还要依照规范或需方请求进展卷边试验、扩口试验、压扁试验等。
关于接受流体压力的钢
1、按消费办法分类
智能酸奶机
〔1〕无缝钢管--热轧管、冷拔管、挤压管、顶管、冷轧管、
〔a〕按工艺分--电弧焊管、电阻焊管〔高频、低频〕、气焊管、炉焊管
〔b〕按焊缝分--直缝焊管、螺旋焊管
2、按断面形状分类
〔1〕庞杂断面钢管--圆形钢管、方形钢管、卵形钢管、三角形钢管、六角形钢管、菱形钢管、八角形钢
管、半圆形钢圆、其余
〔2〕庞杂断面钢管--不等边六角形钢管、五瓣梅花形钢管、双凸形钢管、双凹形钢管、瓜子形钢管、圆锥
形钢管、波浪形钢管、表壳钢管、其余
3、按壁厚分类--薄壁钢管、厚壁钢管
4、按用处分类--管道用钢管、热工装备用钢管、机器产业用钢管、石油、地质钻探用钢管、容器钢管、化
学产业用钢管、特别用处钢管、其余
4.化学身分测验
(1)GB3087-82《低中压汽锅用无缝钢管》规则。化学身分试验办法按
GB222-84及GB223《钢铁及合金化
学剖析办法》中的有关局部。
(2)GB5310-95《高压汽锅用无缝钢管》规则。化学身分试验办法按GB222-84及《钢铁及合金化学剖析办法》、
GB223《钢铁及合金化学剖析办法》中的有关局部。
(3)出口汽锅钢管的化学身分测验按条约规则的有关规范进展
钢管规格及其实际分量表
(1)
壁厚/mm
外径
0.5
0.6
0.8
血压袖带
1.0
1.2
1.4
1.5
1.6
1.8
2.0
2.2
2.5
2.8
3.0
3.2
3.5
/mm
/(kg/m)
钢治实际品质
5
8
0.0550.0650.0830.099
0.0920.1090.1420.1730.201
100.1170.1390.1810.2220.260
120.1420.1690.2210.2710.3200.3660.3880.410
13
14
15
0.1830.2410.2960.3430.4000.4250.450
0.1980.2600.3210.3790.4350.4620.489
0.
0.2800.3450.4080.4700.4990.529
16
17
18
19
20
21
22
25
28
30
32
34
37
38
40
45
46
0.2280.3000.3700.4380.5040.5360.568制造业采购
0.2430.3200.3950.4680.3590.5730.608
0.2570.3390.4190.4970.5730.6100.647
0.2720.3590.4440.5270.6080.6470.687
0.2870.3790.4690.5560.6420.6840.7260.8080.888
0.3990.4930.5860.6770.7210.7650.8520.937
0.4180.5180.6160.7040.7580.8050.8970.9861.074
0.4770.5920.7040.8150.8690.9231.0301.1341.2371.387
0.5370.6660.7930.9180.9801.04121.1631.2821.4001.5721.740
0.5760.7150.8520.9871.0541.1211.2521.3811.5081.6951.8781.997
0.7640.9111.0651.1281.1991.3411.4801.6171.18192.0162.145
0.8140.9711.1251.2021.2781.4291.5781.7251.9422.1542.293
0.8881.0591.2291.3131.3971.5621.7261.8882.1272.3612.515
0.9121.0891.2641.3501.4361.6071.7761.9422.1892.4302.5892.7462.978
0.9621.1481.3331.4241.5151.6961.8742.0512.3122.5692.7372.9043.150
1.091.301.5l1.611.711.922.122.322.622.913.113.303.58
1.331.541.651.751.962.172.382.682.983.183.383.668
1.381.6l1.721.832.052.272.482.813.123.333.543.84
48
50
1.441.681.791.912.142.372,592.933.263.483.69
4.0l
钢管规格及其实际分量表
(2)
壁厚/mm
外径
短期负荷预测0.5
0.6
0.8
1.0
1.2
1.4
1.5
1.6
1.8
2.0
2.2
2.5
2.8
3.0
3.2
3.5
/mm
/(kg/m)
钢治实际品质
5l
53
1.471.711.831.952.182.422.652.993.333.553.774.10
1.531.781.902.032.272.522.763.113.473.703.934.27
1.561.821.942.072.322.562.813.173.543.774.014.36
1.742.022.162.302.582.863.143.543.954.224.484.88
1.842.142.292.442.743.033.333.764.194.484.765.18
2.352.502.813.113.413.854.294.594.885.31
2.372.703.033.353.684.164.644.965.275.74
2.762.943.293.654.004.535.055.405.746.26
2.903.093.473.854.224.785.335.706.066.60
3.OI3.2l3.603.994.384.965.545.926.306.86
3.243.453.874.294.715.335.956.366.777.38
3.463.694.144.595.035.706.376.8l17.247.90
3.703.954.434.915.396.116.827.297.768.47
3.723.964.454.935.416.136.857.327.808.50
3.463.694.144.595.035.706.376.8l17.247.90
3.703.954.434.915.396.116.827.297.768.47
54
60
63.5
65
70
76
80
83
89
95
101.6
102
95
电解抛光液101.6
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