通常对粗轧辊以强度、*热裂为主要要求；小型20辊轧机的工作轧辊重仅 100克左右，而宽厚板轧机的支承辊重量已超过200吨。选用轧辊时首先根据轧机对轧辊的基本强度要求，选定安全承载的主体材料（各种级别的铸铁、铸钢或锻钢等）。

Usually， the main requirements for rough rolling roll are strength and thermal cracking. The working roll weight of *all 20 high mill is only 100 grams， while the weight of backup roll of wide plate mill has exceeded 200 t*. When selecting the roll， first，sleeper， according to the requirements of the mill"s basic strength for the roller， we select the main material for safety lo*g (various grades of cast iron， cast steel or forged steel， etc.).

实践表明，带双镀槽的轴头在使用过程中，镶槽壁容易崩裂，目前常用易加工的带平台的袖头代替双因槽的抽头。

直径超过400mm的冷轧轧辊，在锻造后，多半在中心馒一个670一250mm的通7L。这样，一力面可以使轧辊经热处理店的内应力分朽均勾；另一方面在轧辊表面淬火时，sleeper厂家，可对轧辊通水冷却，****淬火效果。

Practice shows that， with double bath head is in use， insert groove wall is easy to crack， at present common processing platform with the cuff instead of double slot for tap.

Cold roll diameter of more than 400mm， after forging， mostly in the 7L center. A 670 250mm. So， on one hand can make the roller stress heat treatment shop allocation hook are; on the other hand，sleeper厂家， the roll surface quenching， the water cooling roller， improve the quenching effect.

修正精度高，涂层厚度从几微米到几毫米，可对金属工件呈现磨损、划伤、*、裂纹、*损变形、硬度降低、损害等缺点进行堆积、封孔、补对等修正功用，只须打磨、抛光，也可进行车、铣、 刨、磨等各类机械加工，以及电镀等后期加工。

The thickness of the coating is high， and the thickness of the coating is from several micr* to a few millimeters. It can be worn， scratched， pinholes， cracks， breakage and deformation， hardness reduction， damage and other shortcomings to accumulate， seal， and compensate for the defects， such as grinding， polishing， milling，sleeper厂家， millin*rinding and other kinds of mechanical processing， as well as electroplating later processing.