在不少工厂的熔模精密铸造车间里,目前所使用的熔蜡装置一般都采用电阻加热和蒸汽加热两种方法。这两种方法虽具有它们本身的一些优点,但也存在某些难以避免的缺点。如在用电阻加热时,电阻丝温度高,除了电阻丝易损坏及易起火外,还因为蜡料导热性能差,要避免蜡料不脂化变质,往往还需要外加水浴套。用蒸汽加热虽能克服上述缺点,但对一些小型工厂来说,没有锅炉设备,蒸汽来源困难。而对某些老厂亦因铸造车间距原来的锅炉过远,给管道安装和维护带来不少困难。同 In many factory investment casting workshop, the current use of the melting wax device are generally used resistance heating and steam heating two methods. Although these two methods have some of their own advantages, but there are some unavoidable shortcomings. As with resistance heating, the resistance wire temperature is high, in addition to resistance wire is easy to damage and easy to get angry, but also because of the poor thermal conductivity of wax, wax material to avoid fat deterioration, often also need additional water bath cover. Although steam heating can overcome the above shortcomings, for some small factories, there is no boiler equipment and the steam sources are difficult to source. However, for some old factories, the casting workshop is too far from the original boiler to bring many difficulties to the pipeline installation and maintenance. with