通常熔炼铝合金是采用电阻炉或无铁芯感应炉。为了迅速投产,节约投资,我厂熔炼铝镁合金(ZL_5)是采用地坑式焦炭坩埚炉。生产实践证明,只要充分发挥工人同志的作用,严格控制精炼工艺,使用简陋设备,也能获得较好的产品。今将该工艺简介如下。一、操作工艺炉料由70%的锭材、30%的浇冒口和回炉料组成。炉料表面的油污,氧 Usually melting aluminum alloy is the use of resistance furnace or coreless induction furnace. In order to quickly put into operation, saving investment, our factory smelting aluminum-magnesium alloy (ZL_5) is the use of pit-type coke crucible furnace. Production practice has proved that as long as workers give full play to the role of comrades, strictly control the refining process, the use of simple equipment, but also get better products. The process is as follows. First, the operating process of the furnace from 70% of the ingot, 30% riser and back to the feed composition. Burning surface oil, oxygen