收藏词条 编辑词条 客运汽车冷弯型钢比（GB/T6727-1986）
客运汽车冷弯型钢(GB/T6727-1986)
(表1～表4)
表1 槽形型钢的尺寸规格
H-高度 A-腿长 t-壁厚 r-内圆弧半径
|
KQC205×70×5.5 |
205 |
±1.5 |
70 |
±20 |
5.5 |
13.965 |
17.790 |
表2 方形空心型钢的尺寸规格
A-边长 t-壁厚 r-内圆弧半径
|
代 号 |
尺寸及允许偏差 /mm |
理论质量 /(kg/m) |
截面面积 /cm2 |
||
|
A |
允许偏差 |
t |
|||
|
KQF30×30×1.5 |
30 |
±O.5 |
1.5 |
1.296 |
1.652 |
|
KQF30×30× 1.75 |
1.75 |
1.490 |
1.898 |
||
|
KQF30×30×2.0 |
2.0 |
1.677 |
2.136 |
||
|
KQF40×40×1.5 |
40 |
±0.7 |
1.5 |
1.767 |
2.252 |
|
KQF40×40×1.75 |
1.75 |
2.039 |
2.598 |
||
|
KQF40×40×2.0 |
2.0 |
2.305 |
2.936 |
||
|
KQF50×1.5 |
50 |
±0.9 |
1.5 |
2.238 |
2.852 |
|
KQF50×50×1.75 |
1.75 |
2.589 |
3.298 |
||
|
KQF50×50×2.0 |
2.0 |
2.933 |
3.736 |
||
表3 矩形空心型钢的尺寸规格
|
代 号 |
尺寸及允许偏差/mm |
理论质量 /(kg/m) |
截面面积 /cm2 |
|||
|
B |
A |
允许偏差 |
t |
|||
|
KQJ50×30×1.5 |
50 |
30 |
±0.9 |
1.5 |
1.767 |
2.252 |
|
KQJ50×30×1.75 |
1.75 |
2.039 |
2.598 |
|||
|
KQJ50×30×2.O |
2.O |
2.305 |
2.936 |
|||
|
KQJ50×40×1.5 |
50 |
40 |
士O.9 |
1.5 |
2.O∞ |
2.552 |
|
KQJ50×40×1.75 |
1.75 |
2.314 |
2.948 |
|||
|
KQJ50×40×2.O |
2.0 |
2.619 |
3.336 |
|||
|
KQJ55×25×1.5 |
55 |
25 |
±1.O |
1.5 |
1.767 |
2.252 |
|
KQJ55×25×1.75 |
1.75 |
2.039 |
2.598 |
|||
|
KQJ55×25×2.O |
2.O |
2.305 |
2.936 |
|||
|
KQJ55×40×1.5 |
55 |
40 |
±1.0 |
1.5 |
2.121 |
2.702 |
|
KQJ55×40×1.75 |
1.75 |
2.452 |
3.123 |
|||
|
KQJ50×30×1.5 |
50 |
30 |
±0.9 |
1.5 |
1.767 |
2.252 |
|
KQJ55×40×2.O |
2.O |
2.776 |
3.536 |
|||
|
KQJ55×50×1.75 |
55 |
50 |
±1.O |
1.75 |
2.726 |
3.473 |
|
KQJ55×50×2.O |
2.O |
3.090 |
3.936 |
|||
|
KQl80×40×2.0 |
80 |
40 |
±1.2 |
2.0 |
3.561 |
4.536 |
|
KQJ80×40×2.5 |
2.5 |
4.387 |
5.589 |
|||
|
KQJ90×55×2.0 |
90 |
55 |
士1.2 |
2.0 |
4.346 |
5.536 |
|
KlQJ90×55×2.5 |
2.5 |
5.368 |
6.839 |
|||
|
KIQJ95×50×2.0 |
90 |
50 |
±1.2 |
2.O |
4.346 |
5.536 |
|
KQJ95×50×2.5 |
2.5 |
5.368 |
6.839 |
|||
|
KQJ120×50×2.5 |
120 |
50 |
±1.4 |
2.5 |
6.349 |
8.089 |
|
KQJ160×60×3 |
160 |
60 |
±1.6 |
3 |
9.897 |
12.608 |
|
KQJ160×60×4.5 |
160 |
60 |
±1.6 |
4.5 |
14.497 |
18.468 |
|
KQJl80×65×4.5 |
180 |
65 |
±1.8 |
16.263 |
20.718 |
|
|
选用钢种 |
内圆弧半径r/mm |
选用钢种 |
内圆弧半径r/mm |
||
|
t≤4 |
4≤t≤8 |
t≤4 |
4≤t≤8 |
||
|
普通碳素结构钢 |
≤1.5t |
≤2.0t |
低合金结构钢 |
≤2.0t |
≤2.5t |
注：弯曲角度应呈90°，其允许偏差不得大于±1.5°。