圣霖国际吊车轨生产商-圣霖国际吊车轨-圣霖国际【用心服务】

轧辊在制作和运用前的预备工序中会发生剩余应力和热应力。运用时又进一步遭到了各种周期应力的效果，包含有曲折、改变、剪力、接触应力和热应力等。

Residual stresses and thermal stresses will occur in the preparatory process before making and applying rolls. When applied， it is further affected by various cyclic stresses， including twists，圣霖国际吊车轨厂， changes，圣霖国际吊车轨， shear forces， contact stresses and thermal stresses.

19世纪下半叶欧洲炼钢技术的进步要求轧制更大吨位的钢锭，圣霖国际吊车轨批发，无论是灰铸铁或冷硬铸铁轧辊的强度均已不能满足要求。含碳量为0.4%～0.6%普通铸钢轧辊相应诞生。重型锻压设备的出现更使这种成分的锻造轧辊的强韧性得到进一步提高。

In the second half of the nineteenth Century， the progress of steelmaking technology in Europe requires larger tonnage steel ingots to be rolled. Neither the strength of gray iron or chilled cast iron rolls can meet the requirements. The ordinary cast steel roll with a carbon content of 0.4% to 0.6% is born accordingly. The emergence of he***y forging equipment makes the strength and toughness of the forging roll of this component further improved.

（1）堆焊前需先将轧辊辊身表面的疲劳层或缺陷，尤其是裂纹必须彻底清除；

（2）在堆焊时，为了防止裂纹的产生，圣霖国际吊车轨生产商，必须先加工轧辊辊身预热，预热温度根据轧辊辊及堆焊材料而定。

(1) before welding， the fatigue layer or defect of the roller body surface must be first removed， especially the crack must be thoroughly removed.

(2) in the process of surfacing， in order to prevent cracks， the roller body must be pre heated， and the preheating temperature should be determined according to roll rolls and surfacing materials.