轧件在冷床冷却过程中由于冷却水不能均匀分布在型钢表面，头部冷却速度较快，弯曲，形成浴盆状，使腹板上的积水不能流出，导致上表面收缩率明显大于型钢下表面，产生上弯。

为消除不均匀变形，首先应该使2辊压下量足够大，满足型钢塑变要求。消除型钢原有变形，达到统一的变形的目的。

Rolling in bed cooling process due to the cooling water can not be uniformly distributed on the surface of steel, the head of the fast cooling rate, the first bend forming tub shaped, make web water can not flow, resulting in the surface shrinkage rate was significantly higher than that of the steel surface, due to bending.

In order to eliminate the uneven deformation, first of all, the 2 roller should be large enough to meet the requirement of the type of steel plastic change. The original deformation of the steel has reached the goal of uniform deformation.

近年来, 为适应轧制制度变化繁多, 产品规格多、产品及高产量等要求, 我院认真消化、吸收国内外***技术, 设计了一套具有同类水平的高速度、多品种、高质量的小型型钢和棒材冷床设备, 年产棒材可达90万吨, 已达到了国外同类设备的***水平。

In recent years, in order to adapt to various changes in rolling system, many specificati, high quality products and high output, our hospital has carefully digested and absorbed advanced technology at home and abroad, designed a set of ***all steel and bar cold bed equipment with high speed, variety and high quality with the same kind of International advanced level. The annual production of rod can reach 900 thousand t, which has reached the advanced level of the same kind of equipment abroad.

工艺过程是：线材出精轧机后先入水冷导管进行急冷，冷却到650～750℃，经成圈器成圈后落入流态床中。冷床下料装置将其收集成组送至输出辊道上,再由输出辊道将其送到冷剪剪切成定尺成品。流态床用流动的、导热性好的粒料(锆砂，含ZrO267.2%；SiO232.8%)作媒介，用鼓风机搅动这些颗粒呈悬浮运动状态，如同铅浴池中的铅液沸腾一样。

The process is as follows: after the wire is finished, the first step is to enter the water cooling pipe and then to cool it to 650~750 degrees. The flow bed is used as a medium for flowing, good thermal conductivity particles (zirconium sand, containing ZrO267.2%; SiO232.8%). The particles are stirred by the blower to move in suspension, just as the lead liquid in the lead bath is boiling.

在钢铁工业生产过程中，消耗能源推动物料转变的同时会产生大量的余能，如何有效回收利用这些余能已成为钢铁业实现节能减排的重要途径之一。

In the process of iron and steel production, a large amount of residual energy will be produced while energy cumption is driven by energy, and how to effectively recycle these residual energy has become one of the important ways for the iron and steel industry to achieve energy s***ing and emission reduction.