压扁试验

ERW焊管压扁试验性能的评价与提高

Property Appraisal and Improvement of Flattening Test for ERW Pipe

Cr-Mo型钢管焊接接头压扁试验不合格原因分析

The reason of unacceptable joint in flattening test of Cr - Mo steel tube weld

介绍了国内工业用非重复充装焊接钢瓶型式试验的要求和主要项目，并与欧盟标准EN12205-2001及美国标准DOT-39在材料要求、爆破试验、跌落试验和压扁试验等方面进行了比较。

Type experiment requirements and main items on nor-refillable steel welded cylinder for industry cylinder and main items are introduced , and comparison are made on material requirements , explosive test , fall down test and flattening .

压扁试验中试样的最大变形部位出现裂纹状缺陷。

In flattening test , the crack happened in the lagest deformation parts .

GB/T13440-1992无缝气瓶压扁试验方法

Method for flattening test of seamless gas cylinders

大容积钢制无缝气瓶压扁试验测速系统设计

Design on cutting edge speed measurement system of flattening test for seamless gas cylinder

锅炉钢管压扁试验研究

Research on Flattening Test on Boiler Tube

本设计主要完成大容积钢制无缝气瓶压扁试验压头速率的测量。

This design mainly finishes the measurement of Cutting Edge Speed of flattening test for Seamless Gas Cylinder .

通过采用焊后局部回火处理提高了焊缝金属的塑性，从而使接头压扁试验合格，其强度也满足设计要求。

After experimental study , it is found that the weld metal ductility is improved by local post weld tempering treatment . In this way , the results of flattening test for tube joint are acceptable and joint strength is still satisfied for design requirement .

焊接过程中金属流线方向的改变及钢中夹杂物数量较多，将导致压扁试验时断口多在焊接热影响区一侧。

Change of the metal flow line orientation during welding and the significant amount of inclusions in the steel are responsible for the fact that during flattening test , the fracture quite often take places at the side of the test piece under thermal effect by the welding .

空心件楔横轧压扁失稳的试验研究

Experimental Study of Flat Press and Non-Stability about Cross Rolling of Hollow Parts