解决美标管材卡套预装压力值问题  

Solving the Problem of Pre-installation Pressure Value of American Standard Pipe Ferrule

作　　者：赵子义 王砚良 廉小增 商凤新 ZHAO Zi-yi;WANG Yan-liang;LIAN Xiao-zeng;SHANG Feng-xin(CRRC Tangshan Co.,Ltd.,Tangshan 063030,China)

机构地区：[1]中车唐山机车车辆有限公司,唐山063030

出　　处：《价值工程》2021年第1期192-193,共2页Value Engineering

摘　　要：欧美国家轨道车辆制动系统管材有时采用美标管材,连接方式经常采用卡套连接方式。卡套预装压力是供应商提供的数值,他们仅提供了一个预装压力区间,但在实际操作过程中,发现使用这个区间内的压力数值,预装后的卡套有25%报废率,尤其是3/8寸和1/2寸管材。如果压力设置错误,这两种管材卡套预装报废率接近100%。为此,各生产部门需要确定具体卡套预装压力数值,以保证生产的正常进行,提高产品合格率。American Standard pipes are sometimes used for brake system pipes of rail vehicles in European and American countries,and ferrule connection is often used.The pre-assembly pressure of ferrule is the value provided by the supplier.They only provided a pre assembly pressure range.However,in the actual operation process,it is found that the pre installed ferrule has a 25%scrap rate,especially for 3/8-inch and 1/2-inch pipes.If the pressure setting is wrong,the scrap rate of the two kinds of pipe ferrule is close to 100%.Therefore,each production department needs to determine the specific pre assembly pressure value of ferrule to ensure the normal production and improve the qualified rate of products.

关 键 词：卡套式连接 公制管材 美标管材 卡套预装机 压力值 

分 类 号：U444[建筑科学—桥梁与隧道工程]