Analysis to the influences of heating time on the Bell-type furnace;
浅析罩式退火炉加热时间的影响因素
The equipment is composed of extrusion,liquid pressure station,intermediate frequency heating system(another introduction),cooling system,electric cabinet,operation bed,kcn-4s/w add-subtract counter can be used as high precise timer to control the tube heating time of the GTR type intermediate frequency respond heating stove expends to the tubes.
设备由挤压主机、液压站、中频加热系统(另外介绍)、冷却系统、电气柜、操作台组成,其中KCN-4S/W加减计数器可以用作高精度的定时器来控制GTR型中频感应加热炉对管子的加热时间。
Researches show that when the air is preheated to 900 ℃ and oxygen concentration is enriched to 54%,the heating time decreases by 38%,the product rate increases by 61%,thermal efficiency increases by 30.
研究表明:在预热900℃和含氧体积分数为54%条件下燃烧与传统燃烧相比,加热时间可缩短38%,生产率可提高61%,热效率可提高30。
Effect of soaking time on the dissolution of microalloyed elements in high-strength steel containing Ti and Nb;
均热时间对含Ti、Nb微合金元素高强钢固溶规律的影响
The usage of HFH furnace is given and a introduction of calculation of soaking time and purging time in HFH furnace is discussed based on HPH furnace of Baosteel.
在冷轧钢材的工业生产中,罩式炉退火是一个重要的环节,本文讲解了新型的HPH罩式炉的作用,并以宝钢的HPH罩式炉为背景,介绍了控制中最关键的均热时间和保护气氛冲洗时间的计算方法。
The experiment draw a conclusion that heat aging is a better aging process to reduce residual stress than vibrate stress relief(VSR), and tempering at 200℃ for 20h is better than tempering at 120℃ for 70h in reducing residual stress.
结果表明,从消除残余应力的角度看,热时效比振动时效具有显著的效果,200℃回火20小时工艺较120℃回火70小时工艺具有显著的效果。
Determination of optimal preheating time during thermal conductivity measurement with steady-plane-wall system;
稳态平板导热仪最优预热时间的确定
But after used the heat ageing method (low temperature temper), The problem of roll breakage is throughout resolved.
洛阳钢铁公司开坯车间７５ＣｒＭｏ铸钢轧辊极易断裂，采用自然时效，存在周期长，且效果不甚理想等弊端，使用热时效（低温回火）法后，彻底解决了断辊问题。