我厂在开始搞熔模精密铸造时,浇口棒是铝制的,使用中由于酸碱作用,腐蚀严重,损坏很快。要提高其使用寿命,必须解决耐腐蚀问题。为此,我们自制了一批尼龙浇口棒。将两者四个月来的使用情况对比见下表及图1。 At the beginning of our factory engaged in investment casting precision casting, gate stick is made of aluminum, the use of acid and alkali due to the role of serious corrosion, damage quickly. To improve its service life, we must solve the problem of corrosion resistance. To this end, we made a batch of nylon gate sticks. The comparison of the usage between the two in the past four months is shown in the following table and Figure 1.