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冷拉型钢加工厂-冷拉型钢冷拉工艺温度以及表面变硬开裂的具体原因分析

网站编辑:浙江建鑫型钢科技有限公司 │ 发表时间:2020-03-17 

1、冷拉型钢的冷拉工艺是否在常温下进行的?

1. Is the cold drawing process of cold drawn section steel performed at normal temperature?

冷拉型钢的冷拉工艺是在常温下进行的。通过这一操作,还可以来使材料发生塑性变形,从而提高它的屈服点强度。

The cold drawing process of cold drawn section steel is performed at normal temperature. Moreover, through this operation, the material can be plastically deformed, thereby increasing its yield point strength.

2、冷拉型钢中的冷拉圆钢,是否能够进行折弯处理?

2. Can cold-drawn round bars in cold-drawn sections be bent?

冷拉型钢中的冷拉圆钢是可以进行折弯的,因为冷拉圆钢没有超过材料的极限强度。所以冷拉圆钢是可以折弯的。

The cold drawn round steel in the cold drawn steel can be bent because the cold drawn round steel does not exceed the ultimate strength of the material. Therefore, cold drawn round steel can be bent.

3、冷拉型钢如果出现开裂现象的话,是有哪些具体原因所导致的?

3. If there are cracks in cold-drawn section steel, what are the specific reasons?

在冷拉型钢上,如果所使用的材料质量不合格或不达标的话,或者含有杂质,或是杂质含量过大。那么,对其进行加工的话,加工而成的冷拉型钢,在材料硬度上会有所增加,所以容易出现开裂等问题。

On cold drawn steel, if the quality of the materials used is unqualified or does not meet the standards, or it contains impurities, or the content of impurities is too large. Then, if it is processed, the processed cold-drawn steel will increase the hardness of the material, so it is prone to problems such as cracking.

4、冷拉型钢表面为什么会变硬?

4. Why does the surface of cold-drawn steel become hard?

因为冷拉型钢在冷拉过程中,表面会形成马氏体,而且,再加上塑性变形,从而导致位错线的密度增加,由于相互制约,限制了其进一步运动。导致了冷拉型钢表面的硬度增加。

Because cold-drawn steel forms martensite on the surface during cold-drawing, and coupled with plastic deformation, the density of dislocation lines increases, which restricts its further movement due to mutual restrictions. This results in an increase in the hardness of the surface of the cold-drawn section steel.