四棍轧机的工作辊直径较小，传递轧制力矩，轧延压力由直径较大的支承辊承受。这类设备的主要优点是相对刚度较大，压下量大、轧延力小，可轧制较薄的板材，也包括有可逆和连轧两种。

The working roll diameter of the four bar mill is ***all， and the rolling torque is transferred. The rolling pressure is borne by the backup roller with larger diameter. The main advantages of this type of equipment are relatively large stiffness， large reduction， low rolling force，长春rolling mill， thin rolled sheets， and reversible and continuous rolling two.

半闭口式机架是机架与机架盖之间采用斜楔连接的一种机架。这种机架兼有开口式机架和闭口式机架的优点，装卸、换辊方便，280rolling mill，制造容易，400rolling mill，并有较高的刚度，故一般大中型的型钢轧机都采用这种形式的机架。

A semi closed frame is a frame with a wedge between the frame and the frame cover. The rack has the advantages of open frame and closed frame. It has the advantages of loading and unloading， easy roll changing， easy manufacture and high rigidity. Therefore， a large and medium-sized steel mill is adopted in this form.

在锻造和轧制生产中，350rolling mill，钢坯一般在完全燃烧火焰的氧化气氛中加热。采用不完全燃烧的还原性火焰（即“自身保护气氛”）来直接加热金属，可以达到无氧化或少氧化的目的。这种加热方式称为明火式或敞焰式无氧化加热，成功地应用于转底式加热炉和室式加热炉。

In forging and rolling production， billets are usually heated in the combustion atmosphere of complete combustion flame. The direct combustion of metal can be achieved by the incomplete combustion of reduced flame (i.e.， the 'self protective atmosphere')， which can achieve the of no oxidation or less oxidation. This heating method is called open flame or open flame oxidation free heating， which has been successfully applied to rotary hearth furnace and chamber heating furnace.

圣霖国际【诚实守信】-长春rolling mill由鞍山市圣霖进出口贸易有限公司提供。鞍山市圣霖进出口贸易有限公司（shenglininternational.cn）是从事“型材设备,轧钢设备,轨道设备”的企业，公司秉承“诚信经营，用心服务”的理念，为您提供高质量的产品和服务。欢迎来电咨询！联系人：王秋。