Black proof

Using finite difference method,the temperature of slab and the change of skid-mark under different conditions were simulated and calculated.

采用有限差分法模拟计算了不同条件下钢坯和垫块温度场及黑印温差随时间的变化;分析了接触热阻、垫块长度和间距、水管内壁温度等因素对黑印温差的影响;并指出了待轧和踏步时黑印温差的变化趋势。

Using finite difference method, the temperature of slab and the change of skid-mark under different conditions were simulated and calculated.

采用有限差分的方法,对不同条件下钢坯和垫块温度场及黑印温差随时间的变化进行了模拟计算,得到了接触热阻、垫块长度和间距、水管内壁温度等因素对黑印温差的影响,并对待轧和踏步时黑印温差的变化趋势进行了计算。

The formation of billet steel rocker was calculated theoretically and analyzed using the differential method of rolling pressure along width in rolling deformation zone according to the position of the billet steel skid mark, the asymmetrical distribution of the mark degree and the departure of rolled piece centerline from the centerline of rolling.

在轧制变形区应用轧制压力宽向微分法 ,从钢坯滑道黑印位置和黑印程度的非对称分布、轧件中心线偏离轧制中心线两方面对钢板镰刀弯的形成进行了理论计算和分析 ,提出了改进操作规程、提高推床适应能力、改进加热炉滑道、加强加热工艺技术管理以及实施热送热装提高热坯的供应能力等多项措施 ,以适应多倍尺轧制工艺的要求。

The blooms heated in pusher heating furnace generlly hav e serious dark mark and nicking which make the elongation property of steel pla te become worse and the scars and nicking be formedon the surface of steel pl ate.

推钢式加热炉普遍存在着钢坯加热黑印较重,钢坯下表面被划伤造成钢板延伸性能不合格、钢板表面产生结疤、起皮等质量缺陷。