轧辊中大量使用合金元素是在第二次***以后，这是轧钢设备朝着大型化、连续化、高速化、自动化发展以及轧材强度提高、变形抗力加大后对轧辊性能提出更高要求的结果。
A large number of alloying elements in the rolls are produced after the Second World War.the result of rolling mill"s large performance，白城crane rail， continuous， high-speed and automatic development， as well as the increase of rolling strength and resistance to deformation.
焊接时堆焊成败的关键环节，要获得理想的堆焊层必须综合考虑某些可变因素，如：焊接电压、焊接速度、轧辊转速、轧辊的保温、焊接电流、焊接材料等，对一些含碳及合金元素高的辊芯，crane rail厂家，为防止脆性区的裂纹，除一定的预热措施外，多采用低碳低合金过渡层进行预先堆焊过渡层。
In order to obtain an ideal surfacing layer， some variable factors must be c***idered，crane rail生产商， such as welding voltage， welding speed， roll speed， roll insulation， welding current， welding material and so on. Some roll cores with high carbon and alloy elements， in order to prevent cracks in brittle zone， h***e to be c***idered in order to obtain ideal surfacing layer. In addition， the low carbon low alloy transition layer is used to pre weld the transition layer.
轧辊的分类方法有多种，crane rail生产，主要有：（1）按产品类型分有带钢轧辊、型钢轧辊、线材轧辊等；（2）按轧辊在轧机系列中的位置分有开坯辊、粗轧辊、精轧辊等；（3）按轧辊功能分有破鳞辊、穿孔辊、平整辊等。
There are many classification methods like roller are: (1) according to the type of product with strip roller， steel roller， wire roller; (2) according to the roll in rolling mill series in the of divided blooming rolls， roughing roll， finishing roll; (3) according to the function of a roller descaling Kong Gun， wearing roller， flat roll etc.
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