棒材穿水冷却装置的基本原理是什么？

在精轧机后设有一个由数个水冷箱组成的可调水冷段，对棒材进行急剧冷却，使棒材表面形成马氏体***，在随后的温度***过程中，轧钢生产线厂家，芯部热量散出对表面马氏体***可产生回火作用，结果棒材表面层为回火马氏体，轧钢生产线，芯部为细粒珠光体及索氏体***。这种***结构使棒材屈服极限和韧性提高，并具有良好的可焊性。

What is the basic principle of the bar water cooling device?

After the finishing mill， there is an adjustable water cooling section of several water cooling boxes. The rod material is cooled sharply to form martensite structure. During the subsequent temperature recovery process， the heat of the core can produce tempering on the surface martensite， and the surface layer of the rod is tempered martensite， the core is fine pearlite and Soxhlet body. This structure improves the yield limit and toughness of bars， and has good solderability.

冷轧机冷轧速度的快慢与其配置的电机有关。 冷轧机作为一种机器设备本身不可能产生任何动力，其动力主要源自电机，轧钢生产线厂，所以电机功率越大，轧钢生产线设备哪家好，就越能提供较大的轧制动力，轧制速度也能越快；反之电机功率越小.

The speed of cold rolling is related to the motor. As a kind of machine and equipment itself， cold rolling mill can not produce any power， its power is mainly from motor， so the greater the power of the motor， the more rolling power can be provided， the faster the rolling speed can be， the ***aller the motor power is.

整个轧钢生产过程总是有以下几个基本工序组成的：

坯料准备，包括表面缺陷的清理，表面氧化铁皮的去除和坯料的预先热处理等。坯料的加热，是热轧生产工艺过程的重要工序。

The whole rolling process of steel rolling is always composed of the following basic processes:

Preparation of the billet， including the cleaning of surface defects， the removal of the iron oxide skin on the surface， and the pre heat treatment of the blank. The heating of the billet is an important process in the process of hot rolling.

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