The paper explains the experiment of smelting silver based electric contact materials and silver based solder by medium-frequency induction furnace with graphite and clay crucible. It compares the effects of the two type crucibles on the compositions of the melted materials. 分别用石墨坩埚和粘土坩埚对银基电触头材料和银基钎料进行中频熔炼试验,比较两种坩埚对所熔炼材料成分的影响。