Preparation method of integral resin bonded sand mould
A resin sand and integral technology, applied in the field of casting, can solve the problems of increased grinding processing costs, low internal density, large external dimension deformation, etc., and achieve the effect of reducing grinding processing costs, small external dimension deformation, and small dimensional deformation
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[0010] Example
[0011] (1) Material selection: 96 parts of quartz sand, 3.3 parts of furan resin, 0.7 part of hardener, quartz sand with silica content greater than 95.5% and particle size of 50-80 mesh;
[0012] (2) Mixing Add quartz sand, furan resin and hardener in proportion to the mixer, stir, grind evenly, and set aside;
[0013] (3) Molding: Pour the spare mixture into the mold, let it stand for molding at room temperature, and dry naturally. If it is urgently needed for production, the sand mold can also be dried with the help of a microwave dryer.
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