论文部分内容阅读
我厂试制的16V240Z 型柴油机气阀,由于工作中受高温,反复冲击和腐蚀介质的侵蚀,阀面极易磨损和腐蚀。为了提高气阀的使用寿命,可在阀面上焊堆一层耐高温、耐冲击、耐腐蚀的特殊合金材料。这种材料采用一般的方法难以堆焊。由于考虑到等离子电弧具有高达15000～33000℃的高温、较高的导电性、传热性和强大的机械冲击力,以及弧区稳定、热影响区小、调节范围大等一系列优点,在交通部科学研究院等单位的协助下,我们采用了粉末等离子堆焊气阀的工
Our factory prototype 16V240Z diesel valve, due to the work by high temperature, repeated impact and erosion of corrosive media, the valve surface is easy to wear and corrosion. In order to improve the service life of the valve, a layer of special alloy material with high temperature resistance, impact resistance and corrosion resistance can be welded on the valve surface. This material is hard to build by conventional methods. Taking into account the plasma arc with high temperature up to 15000 ~ 33000 ℃, high conductivity, heat transfer and strong mechanical impact, as well as the arc zone stability, heat-affected zone is small, a wide range of adjustment and other advantages in traffic Ministry of Science and other units with the assistance of the unit, we use a powder plasma welding gas valve workers