A casting method based on a new type of oil pump shell mold
An oil pump body and a new type of technology, applied in the field of hydraulic parts, can solve problems such as difficult grinding of parting surface burrs, broken sand cores, insufficient strength, etc., to achieve the effects of reducing processing costs, ensuring casting quality, and reducing shrinkage and shrinkage cavities
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[0031] This embodiment is based on a casting method of a new type of oil pump casing, and the casting method includes the following steps:
[0032] (1) First, use metal to make the metal template required for the oil inlet pump body;
[0033] (2) Next, heat the metal template to 180-280°C, and then cover the mold sand hardened by heat on the metal template to solidify the molding sand;
[0034] (3) Then, the molding sand is heated and solidified to form a shell mold, such as figure 1 As can be seen from the schematic diagram shown, the shell type is composed of an upper shell and a lower shell 2, and the upper shell and the lower shell 2 are molded to form an oil pump body cavity. The upper shell includes a shell body 11, and the shell body 11 There is an exhaust port 12 in the center of one side, and the cavity of the oil pump body is symmetrically distributed on both sides of the exhaust port, and a gap 13 is provided on the side of the housing body 11 adjacent to the exhau...
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