Ways of improving the speed parameters of drum-type flying shears for cutting flat-rolled products to measured lengths

The highest possible speed characteristics are achieved in cross-cutting shears by optimizing the relations between the parameters of the cutting mechanism (the diameter of the drums and the number of blades) with allowance for the range of desired product lengths and the dynamic characteristics of the drive. One of the innovations used in the drum-type flying shears made by the Novokramatorsk Machine plant has been incorporated into the cross-cutting shears installed in metal-finishing shop No. 3 at the Severstal’ Metallurgical Combine.     

Microcomputer-based control system for flying shears and continuous layout of rolled products

All-Union Scientific-Research, Planning, and Design Institute of Metallurgical Machinery (VNIImetmash). Yuzhuralénergomontazh. Translated from Metallurg, No. 9, pp. 36–37, September, 1988.     

飞剪自动控制系统的工作过程和原理

介绍广钢高线厂1#飞剪自动控制系统的工作过程和原理,1#飞剪是一种启停式飞剪，其自动控制系统主要由GE90-30PLC、DV-300直流传动系统和可控硅整流装置组成，辅以热金属检测器和数字编码器，能很好地完成剪切、定位和停车过程。     

细晶粒热轧钢筋应力腐蚀试验研究

通过对HRBF400、HRBF500细晶粒热轧钢筋进行多种溶液的应力腐蚀试验,探索性衡量细晶粒热轧钢筋的应力腐蚀敏感性。进行不同的试验条件下进行试验的对比,摸索钢筋进行应力腐蚀的试验条件。对细晶粒热轧钢筋在使用过程中,不用考虑其氢脆敏感性。细晶粒热轧钢筋对NH4SCN、NaCl、NaHSO4溶液无应力腐蚀敏感性。     

汽车热轧大梁钢分条后出现侧弯的原因分析

汽车轻量化发展需要不断提升汽车钢的强度,而钢材强度越高则内应力均匀性越难控制。为了研究某热轧线汽车大梁钢分条后出现侧弯的问题,通过分析分条后各窄条与基准的实测距离值,研究出一套符合该问题研究的方法,并推导出相应的一组计算公式。根据推导的公式计算了各窄条的侧弯量大小和原板残余应力分布,结果表明,窄条出现侧弯是热轧卷板形不对称以及呈现边浪趋势造成的。根据研究结果,有针对性地提出了改善措施,并取得了明显的应用效果。     

Aspects of the lengthwise cutting of coiled rolled products of steel 08ps in the manufacture of skelp for welded water-and gas-line pipe

The development of recommendations on the adjustment of the blades used for cutting rolled products at the Chelyabinsk combine has eliminated the rejection of tubes for defects caused by burrs and bent sections on the edges of the skelp. It has become possible to consistently obtain a quality cut on the skelp by providing sheet shop No. 4 with a stand that allows mechanized assembly and adjustment of the blades of the rotary shears before they are installed in the unit that cuts the skelp lengthwise.