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Home Special steel Hot Work Die Steel 3Cr2W8V
M2 Steel sample view
718
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W1.2367
W1.2367

3Cr2W8V

Similar steel grades:

3Cr2W8V、H21、T20821、SKD5、X30WCrV93/1.2581、2730、BH21、Z30WCV9、3X2B8Ф

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Categories: Hot Work Die Steel, Special steel Tag: Hot Work Die Steel
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Description

类似钢材等级:

化学成分:

基本介绍:

莱氏钢,高热强性热作模具钢,常用的压铸模具钢。该钢具有良好的锻造、机加工和热处理工艺性能,高温下硬度较高,但其韧性和塑性较差,淬透性中等,断面厚度≤80~100mm可淬火。此钢相变温度高,抗热疲劳性能好,以较低的碳含量保证较高的韧性和良好的导热性,同时含有较多易形成碳化物的铬、钨元素,在高温下具有较高的硬度和强度。

特征:

1)用于制造大小锻毛坯。2
)用于制造热挤压模,当硬度为45~50HRC时,易早期断裂,寿命不高;当硬度为38~40HRC时,不易早期断裂,平均寿命大幅度提高。3
)压铸模中广泛使用温度在600~650℃区间服役的凸模、凹模或镶件,建议选用硬度为48~52HRC的钢。4
)该钢在锻造热钢锻件时,用5CrMnMoM钢代替,模具寿命由原来的不足200件,提高到1000件左右。
5)用钢制成的模具,采用气体渗碳炉或固体渗碳剂保护加热淬火,易造成表面脱碳层,厚度为0.5~2.0mm,含碳量可达0.7%~1.0%,易出现导致早期热疲劳开裂的现象。冷作模具出现表面碳化后,主要出现崩刃、脆性断裂等失效形式。6
)可作型腔镶件材料、型芯材料。

热处理:

加热温度:1130~1160℃;
始锻温度:1080~1120℃;
终锻温度:850~900℃;
冷却方式:先空冷至氩气附近,然后缓慢冷却。

可选尺寸:

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