V-method casting process
A casting process and casting technology, which is applied in the field of V-method casting process, can solve problems such as differences, and achieve the effects of high efficiency, saving production space, and saving equipment investment
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[0026] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not used to limit the present invention.
[0027] Such as figure 1 As shown, the V method casting process includes the following steps: 1) Prepare the mold, and prepare the mold with the suction box;
[0028] 2) The EVA plastic film is provided with vent holes directly connected to the vacuum tube of the exhaust chamber, and the plastic film is placed under the film dryer to be heated to a softened state; the thickness of the EVA plastic film is 0.10-0.20mm.
[0029] 3) Apply vacuum to the softened plastic film through the vent of the suction box of the mold to make it closely adhere to the mold;
[0030] 4) Place the negative pressure sand box on the mold;
[0031] 5) The sand box is filled with dry sand by shaking the eq...
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