New process method for manufacturing mold capable of ensuring size accuracy of cast blade for large-scale water turbine
A technology of casting blades and dimensional accuracy, which is applied in the direction of manufacturing tools, casting molding equipment, casting molds, etc., to achieve the effects of simple production, unique material selection, and prevention of uneven compactness
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[0022] A new mold manufacturing process method capable of ensuring the dimensional accuracy of casting blades of large water turbines is characterized in that it includes the following steps:
[0023] a. Material selection: the mold is made of wood with low moisture content, and the surface of the mold is covered with a layer of environmentally friendly new epoxy resin that can be cut after curing;
[0024] b. Design of mold making process: the formed wood is made of square and plate overlapping to make the mold skeleton and the base of the mold working surface. The resin layer is adhered to the base of the mold surface. After curing, it is processed by large CNC machining center equipment. the working surface of the mould;
[0025] c. Establish a three-dimensional model of the mold: according to the casting process standard document of the blade casting, use UG software to establish the three-dimensional model of the mold, make the mold for the mold skeleton and subsequent pr...
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