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A lost foam casting and white mold technology, applied in the field of forging, can solve the problems of rough process flow design, unsatisfactory lost foam casting mold sealing and strength, etc., achieve high surface finish and dimensional accuracy, reasonable process route design, The effect of high metal utilization
Inactive Publication Date: 2015-09-02
LIUZHOU KEERTE FORGING MACHINERY
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Problems solved by technology
However, in the existing lost foam casting technology, due to the rough design of the process flow, the sealing and strength of the lost foam casting mold are not ideal
Method used
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[0013] The present invention is realized through the following specific embodiments:
[0014] A lost foam casting method, comprising the following steps:
[0015] Step 1: Make a foam plastic white mold, combine the casting system, brush and spray special high-temperature resistant paint on the surface of the gasification mold, and dry;
[0016] Step 2: Put the interlayer sand box on the workbench, fill it with dry sand, vibrate it, and scrape it flat, put the dried gasification mold on the bottom sand, fill it with dry sand, and scrape the mouth of the box with slight vibration for an appropriate time;
[0017] Step 3: Cover with plastic film, put the sprue cup, connect the vacuum system to suck the vacuum, after the dry sand is fastened and formed, pour it, the white mold gasifies and disappears, and the metal liquid takes its place;
[0018] Step 4: Release the vacuum, turn over the box after the castings condense, and take out the castings from the loose dry sand.
[0019...
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Abstract
The invention relates to the field of the casting technology and in particular relates to a full mold casting method. The full mold casting method comprises the following steps: I. manufacturing a foam plastic pattern, combining a casting system, brushing and spraying special high-temperature paint on the surface of a gasified pattern and drying; II. arranging an interlayered sand box on a worktable, filling with dry sands, compacting, striking off, arranging the dried gasified pattern on base sand, fully filling with dry sands, slightly compacting for an appropriate time period, and striking off the opening of the sand box; III. covering a plastic film, placing a pouring cup, connecting a vacuum system for vacuumizing, securing the dry sand, forming, casting, gasifying the foam plastic pattern, and filling the position by molten metal; and IIIV. releasing vacuum, condensing a casting, overturning the box, and taking out the casting from loose dry sands. According to the full mold casting method, the process route design is reasonable, the surface finish of the produced casting is high, the size precision is high, the production procedure is simple, the metal utilization rate is high, used sand is completely recycled, and the molding cost is reduced.
Description
technical field [0001] The invention relates to the technical field of forging, in particular to a lost foam casting method. Background technique [0002] Lost Foam Casting is a new technology with nearly no margin and precise molding. This process does not require mold taking, no parting surface, and no sand core. Therefore, the casting has no flash, burr, and draft angle, which reduces the risk due to the combination of cores. resulting in dimensional errors. . However, in the existing lost foam casting technology, due to the rough design of the process flow, the sealing and strength of the lost foam casting mold are not ideal. Contents of the invention [0003] In order to solve the above problems in the prior art, the present invention provides a lost foam casting method. [0004] Technical effect of the present invention is realized through the following technical solutions: [0005] A lost foam casting method, comprising the following steps: [0006] Step 1: Mak...
Claims
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Application Information
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