Lost foam casting method for heavy casting
A technology of lost foam casting and large-scale castings, which is applied to casting molding equipment, molds, cores, etc., can solve problems such as the solidification speed of molten iron cannot keep up, large castings have large space, and castings are deformed. The effect of avoiding casting deformation and low cost
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[0015] The present invention is described in detail below:
[0016] Casting method of the present invention comprises the steps:
[0017] a. Make a foam model: make a foam model according to the design requirements;
[0018] b. Install the anti-deformation bracket: make a steel structure anti-deformation bracket according to the size and length of the workpiece, place the anti-deformation bracket on the bottom of the foam model, and the shape of the model facing downward when packing is consistent with the shape of the bracket;
[0019] c. Coating: coating the foam model well done, the thickness of the coating must not be less than 4mm, the components and parts by weight of the coating are 18 parts of quartz powder, 14 parts of potassium feldspar powder, 8 parts of brown corundum, 5 parts of white corundum, 15 parts of bauxite, 20 parts of talc powder, 20 parts of graphite powder, 1.5 parts of latex, 1 part of sodium bentonite, 2 parts of silica sol, 1.5 parts of resin partic...
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