过盈配合压入力计算 |
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常用材料弹性模量、泊松系数和线性膨胀系数 |
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点击这返回总目录 |
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材料 |
弹性模量E *103(N/mm²) |
泊松系数 |
线膨胀系数a |
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1 |
结合直径(mm) |
df |
30 |
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加热 |
冷却 |
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2 |
结合长度(mm) |
Lf |
2 |
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碳钢、低合金钢、合金结构钢 |
200~235 |
0.30~0.31 |
11 |
-8.5 |
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3 |
最大过盈量(mm) |
δmax |
3 |
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灰铸铁HT150、HT200 |
70~80 |
0.24~0.25 |
11 |
-9 |
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4 |
包容件弹性模量(N/mm²) |
Ea |
4 |
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灰铸铁HT250、HT300 |
105~130 |
0.24~0.26 |
10 |
-8 |
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5 |
被包容件弹性模量(N/mm²) |
Ei |
5 |
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可锻铸铁 |
90~100 |
0.25 |
10 |
-8 |
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6 |
包容件外径(mm) |
da |
6 |
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非合金球墨铸铁 |
160~180 |
0.28~0.29 |
10 |
-8 |
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7 |
被包容件内径(mm) |
di |
7 |
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青铜 |
85 |
0.35 |
17 |
-15 |
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8 |
泊松系数 |
v |
8 |
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摩擦系数 |
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9 |
摩擦系数 |
μ |
9 |
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材料 |
无润滑 |
有润滑 |
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10 |
系数Ca |
Ca |
6.9167 |
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钢-钢 |
0.07~0.16 |
0.05~0.13 |
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11 |
系数Ci |
Ci |
-6.8848 |
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钢-铸钢 |
0.11 |
0.07 |
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12 |
结合面最大单位压力(N/mm2) |
Pfmax |
0.2839 |
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钢-结构钢 |
0.1 |
0.08 |
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13 |
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钢-优质结构钢 |
0.11 |
0.07 |
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14 |
压入力(kg) |
P |
49.15 |
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钢-青铜 |
0.15~0.20 |
0.03~0.06 |
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注:1、仅需填写(1-9)项即红色部分即可; |
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钢-铸铁 |
0.12~0.15 |
0.05~0.10 |
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2、被包容件为实心轴时di=0; |
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铸铁-铸铁 |
0.15~0.25 |
0.05~0.10 |
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3、压装机所需的压力一般为压入力的3~3.6倍 |
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