MIEBACH激光焊机压板回路分流集流阀寿命短的原因分析

Cause analysis of short service life of dividing-combining valve in pressing plate circuit of MIEBACH laser welder

介绍了分流集流阀的结构特点和工作原理,对某APL常化酸洗机组的MIEBACH激光焊机压板升降液压回路分流集流阀使用寿命较短的原因进行了详细分析。分析结果表明:该分流集流阀原设计选型额定流量无法满足现场实际流量,阀芯动作时冲击较大,频繁动作冲击造成阀芯断裂损坏。在调节液压回路中的其他液压阀无法解决这一问题后,根据实际流量和工况对分流集流阀进行改造升级,在保证焊机压板升降动作正常的同时,也彻底解决了分流集流阀寿命短的问题。

The structure characteristics and working principle of the dividing-combining valve were introduced,and the reasons for the short service life of the dividing-combining valve in the pressure plate lifting hydraulic circuit of MIEBACH laser welding machine of the APL normal pickling unit were analyzed in detail.The analysis results showed that the rated flow of the original design of the dividing-combining valve could not meet the actual flow on site,and the valve core had a large impact when it worked,and the frequent action impact caused the valve core to be broken and damaged.The problem could not be solved by adjusting other hydraulic valves in the hydraulic circuit,so the dividing-combining valve was upgraded according to the actual flow and working pressure,which not only ensured the normal lifting action of the welding press plate,but also completely solved the problem of short service life of the dividing-combining valve.