[ b ] abstract : [ / b ] in this research it is introduced that a 5kw laser with co2 flow transverse was used for cladding the sealing surface of high - parameter valve for petrochemical industry 收稿日期： 1998 ? 09 ? 21阀门在使用过程中，其密封面长期处于介质之中并受到介质的冲刷和腐蚀。
The seat ring uses the sealing face inlaid with ptfe , so has dual seals of ptfe to metal and metal to metal , the ptfe sealingface also acts as removing the dirt on the wedge disc 金属对金属密封的阀门，阀体外部设有注油脂结构，油脂通过注脂器、阀座进入阀门密封面，使阀门达到零泄漏。
It has been proved by user that the sealing surface of valves processed by laser cladding have better property of anti - abrasive , anti - acid , anti - high - temperature , and , have the longer life 国内对一些高参数阀门的关键密封面一般采用等离子喷焊，电弧、火焰堆焊等传统工艺进行强化1 。
