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最近,虎溪电机厂试用一种以硝酸钠和石墨粉为主体的铸造铝合金精炼剂,代替以六氯乙烷为主体的精炼剂。经过近半年来的生产实践,精炼效果良好,不产生刺激性的有害烟雾,不腐蚀厂房和设备,不影响工人身体健康和污染环境。 1.精炼剂的配方,加入量和操作方法配方:硝酸钠(NaNO_3)60％、石墨粉(C)10％、冰晶石30％。加入量:为铝液总重量的0.5％。
Recently, Huxi Electric Works trial of a sodium nitrate and graphite powder as the main casting aluminum alloy refining agent, instead of hexachloroethane as the main refining agent. After nearly six months of production practice, the refining effect is good, does not produce irritating harmful fumes, does not corrode the plant and equipment, does not affect the health of workers and pollute the environment. 1 refining agent formula, dosage and operation method formula: sodium nitrate (NaNO_3) 60%, graphite powder (C) 10%, cryolite 30%. Addition: 0.5% of the total weight of liquid aluminum.