铁基高温耐磨堆焊焊条的设计

Study on iron-based high temperature wear resistant surfacing electrode

我国当前研制应用于生产的耐磨堆焊材料大部分是沿用过去的铁铬碳系,铁铬硼系,高铬铸铁合金系统和等离子弧用的粉末钴基、镍基材料[1].它们在抗蚀、耐磨及热稳定性等方面均有突出的优点,但在实际应用中有一定的困难,钴和镍是价格昂贵的稀有金属,研究出高温耐磨而且价格低廉的堆焊材料是非常有必要的.针对高温耐磨料磨损的情况,采用不锈钢焊芯,通过药皮向堆焊层中过渡合金元素的方法,合成多种硬质相,达到多元复合强化的目的.通过正交回归设计方法研制出了一种铁基高温耐磨堆焊焊条.

Now in our country the wear resistant surfacing material studied、 utilized and made is Fe-Cr-C、 Fe-Cr-B and high chromium cast iron alloy system and powder Cobalt and Nickel-based alloys used in plasma arc. they all have extraordinary virtues in the corrosion resistance,wear resistance,heat stability etc. But,in fact,there are some difficulties because of rare and expensive Cobalt and Nickel and the refore it is indispensable to investigate the high temperature wear resistant surfacing material with low price. In allusion to the using condition of high temperature grind particle wear, stainless steel core wire is used in the electrode, the alloy elements are transferred into the surfacing layer through coating, and many kinds of hard phases are synthesized, which obtain many elements compounded strengthening. A new type of iron-based high temperature wear resistant surfacing electrode was invented by the method of orthogonal regression design.