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镁合金熔剂系列
覆盖剂  Covering agent
覆盖剂 Covering agent
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特点:本制剂主要由镁、钠、钾的氯盐和氟盐所组成,具有较低的熔点(653K-673K),适当的表面张力,在合金熔炼温度下熔化成液态,自动形成连续的覆盖层,由于有特殊无机添加剂的作用,它会持续地释放出惰性气体,使镁液表面受到溶剂、气体复合保护;在炉中长时间静置不破碎下沉,有效时间大于三小时,有害气体量少,符合工业卫生标准及废气排放要求。

用途:适用于镁合金和铝镁合金的冶炼。

使用方法:用量为1-2%,通常以覆盖严密程度来确定,在熔炼开始时加入一定数量于坩埚底部熔化后装入炉料,溶液表面应保持有5-10毫克的覆盖层。铝镁合金加入方法同上,与铝锭一起熔化,在覆盖保护条件下加入镁锭和回炉料。金属液面如有裸露处,应当及时补加。

Characteristic: This preparation is mainly composed of chloride and fluoride salts of magnesium, sodium and potassium. It has low melting point (653K-673K), suitable surface tension, melts into liquid at the melting temperature of the alloy, and automatically forms a continuous coating. Because of the role of special inorganic additives, it continuously releases inert gas, which makes the surface of magnesium liquid protected by solvent and gas. Medium and long time standing without breaking and sinking, effective time more than three hours, less harmful gases, in line with industrial health standards and emission requirements.

Usage: Suitable for smelting of magnesium alloys and aluminium-magnesium alloys.

Usage: The dosage is 1-2%, which is usually determined by the degree of tightness of the coating. At the beginning of smelting, a certain amount of melting material is added to the bottom of the crucible and then filled into the furnace. The surface of the solution should be kept 5-10 mg of the coating. The addition method of Al-Mg alloy is the same as that of Al ingot, which is melted together with Al ingot. Magnesium ingot and refining charge are added under cover protection condition. If the metal level is exposed, it should be added in time.

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