一、用杂铝试制更生铝合金风扇 1.准备工作一般炉料,用刷子刷去灰尘泥砂,油污用碱水清洗或用焙烧除去,然后进行预热。将坩埚、浇包、搅拌、钟罩等用表1涂料连续涂刷两次然后烘干,烘涂料的温度以不产生开裂为适宜。 2.熔化将坩埚加热至暗红色(不超过650℃)加入废铝铸件,浇、冒口和 First, the use of heterogeneous aluminum trial rejuvenation aluminum fan 1. Preparation of the general charge, with a brush to brush the dust and sand, oil with alkaline cleaning or roasting removed, and then preheated. The crucible, ladle, mixing, bell capping, etc. Table 1 paint continuous brushing twice and then drying, baking paint temperature is not suitable for cracking. 2. Melting The crucible is heated to dark red (not more than 650 ℃) by adding aluminum castings, pouring, riser and