Since the
mould steel 1.2344 is a kind of multi element composite medium carbon alloy steel, it's contains more alloy elements Mo、V、Cr, make the solidification temperature of liquid alloy decreased, resulting in the crystallization temperature range increases, the casting performance is poorer. The following two tables are the mobility and linear shrinkage of 1.2344 steel. Tests showed, 1.2344 steel pouring temperature control in 1 530 ~ 1 630 ℃ is appropriate, its linear shrinkage be similar to ordinary carbon steel. By the electroslag remelting process can decrease the solidification temperature interval, improve the inner quality of
1.2344 mould steel, improve the toughness of casting mould.
Mobility
|
| Casting type |
Pouring temperature/°C |
Overheating temperature/°C |
Helix length/mm |
| Sand mold |
1530 |
70 |
260 |
| Sand mold |
1588 |
128 |
350 |
| Sand mold |
1670 |
210 |
475 |
| Sand mold |
1700 |
240 |
760 |
Linear shrinkage(%)
|
| Projeck |
Parameter |
| Free shrinkage |
1.68 |
| Blocked shrinkage |
1.29 |
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