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精铸导向叶片蜡模采用手工操作校正,常难以保证蜡模的几何形状和尺寸精度。现采用硫磺—石墨粉—地蜡作模料,制成蜡模校正模,代替手工校正,效果很好。熔融的硫磺—石墨粉—地蜡混合物(石墨粉在溶液中呈游离状态)在自由浇注的条件下有好的“印铸性能”。制作的导向叶片蜡模校正模表面光洁度好,硬度高,尺寸精确稳定,不易变形,能节省材料和工时,减轻劳动强度,而且可以反复使用。货源充裕,价格便宜。一、模料的配比及性能采用的硫磺为粉状普通硫磺,石墨粉为砂模上采用的黑铅粉,地蜡为南充炼油厂的67号
Casting guide vane wax manual correction, often difficult to ensure the wax mold geometry and dimensional accuracy. Is the use of sulfur - graphite - wax as a mold, made wax mold correction, instead of manual correction, the effect is very good. The molten sulfur-graphite-wax mixture (graphite powder is free in solution) has good “casting properties” under free-pour conditions. Made of guide vane wax mold correction mold surface finish, high hardness, dimensional accuracy and stability, not easily deformed, can save material and working hours, reduce labor intensity, and can be used repeatedly. Adequate supply, cheap. First, the ratio of mold and performance The sulfur used for the powder common sulfur, graphite powder used for the sand mold on the black lead powder, wax to Nanchong Refinery No. 67