C
|
Si
|
Mn
|
P
|
S
|
0.42~0.48
|
0.17~0.37
|
0.50~0.80
|
≤0.030
|
≤0.030
|
項(xiàng)目
|
入爐溫度/℃
|
加熱溫度/℃
|
開(kāi)鍛溫度/℃
|
終鍛溫度/℃
|
冷卻方式
|
鋼錠
|
≤850
|
1150~1220
|
1100~1160
|
≥850
|
坑冷或堆冷
|
鋼坯
|
1130~1200
|
1070~1150
|
≥850
|
坑冷或堆冷
|