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Moulding flask for casting thin steel plate blank and casting method thereof
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A thin steel plate and blank technology, which is applied to a sand box for casting a thin steel plate blank and its casting field, can solve the problems of difficult to clean garbage, the distortion of the blank cannot be flat, and the deformation of the steel blank, etc., and achieves simple structure, high production efficiency, The effect of low production cost
Inactive Publication Date: 2012-07-04
丁邦敏
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Problems solved by technology
To solve this problem, large hydraulic presses or digging pits are often required, which are costly and occupy a large area
[0005] As for the horizontal molding, due to the objective existence of garbage in the melting furnace and ladle that is difficult to remove, the garbage will float on the uppermost layer of the cavity during casting, and it is difficult to discharge from the riser, etc., and finally stay on the top of the steel blank. On the surface, after opening the box, it is often necessary to use gouging to clean up the garbage, and then perform welding repairs. Due to local heating, the steel blank will often be deformed. In severe cases, the blank will be twisted and cannot be flattened and scrapped
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Embodiment 1
[0026] as attached figure 1 , 2 As shown, a sand box for casting thin steel blanks includes an upper box body 1 and a lower box body 2, and the upper box body 1 and the lower box body 2 are fixed by bolts, and the fixed upper and lower box bodies A cavity 3 for casting thin steel plate blanks is formed between them. A sprue 4 is provided in the cavity 3 to connect an external sprue cup 5. A riser 6 is also provided in the cavity 3. The upper box body 1 and the lower box body 2 are interspersed with double-ended studs 7, and the two ends of the double-ended studs 7 fix the upper box body 1 and the lower box body 2 through nuts 8.
[0027] as attached figure 2 As shown, the stud 7 in this embodiment is inserted into the positioning pin hole 9 between the upper box body 1 and the lower box body 2 , and the inner wall of the positioning pin hole 9 is covered with fireproof bone glue 10 .
[0028] In this embodiment, the positioning pin holes 9 on the upper box body 1 and the l...
Embodiment 2
[0032] A method for casting a thin steel plate blank, at least including the following steps before it is molded:
[0033] A, the steps of making the upper box body and the lower box body of the sand box;
[0034] B. The step of fixing and locking the upper box and the lower box with studs, turning over and making the riser face up for pouring.
[0035] Step A specifically includes:
[0036] Weld the shells of the upper and lower boxes with channel steel, reserve sprue openings and risers on the parting surfaces of the upper and lower boxes, and set up exhaust channels, pour molding sand into the shells, and wait for the sand to harden. The lower box is sealed with fireproof bone glue, and locked with bolts around.
[0037] In step B, it also includes the step of setting positioning pin holes between the upper and lower boxes, specifically including: making the two sides of the cavity between the upper and lower boxes into a circular frustum shape, and the inner wall of the ...
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Abstract
The invention relates to the field of manufacturing of a steel plate blank, in particular a moulding flask for casting a thin steel plate blank and a casting method thereof. The moulding flask for casting the thin steel plate blank disclosed by the invention comprises an upper flask body and a lower flask body. The upper flask body and the lower flask body are fixed by bolts. A cavity for casting the thin steel plate blank is formed between the fixed upper flask body and lower flask body. The cavity is provided with a pouring gate that is connected with an external pouring cup. The cavity is further provided with a riser. A double-end stub is inserted between the upper flask body and the lower flask body. The upper flask body and the lower flask body are fixed by the two ends of the double-end stub by nuts. The moulding flask for casting the thin steel plate blank and the casting method thereof disclosed by the invention not only are lower in production cost but also can obtain the thin steel plate blank with higher precision. The obtained thin steel plate blank is good in quality, has no slag on the surface and is smooth, so that the work load in the later period is low.
Description
technical field [0001] The invention relates to the field of steel plate blank processing, and in particular provides a sand box for casting thin steel plate blanks and a casting method thereof. Background technique [0002] In the machinery and equipment manufacturing industry, it is often necessary to match it with large and relatively thin steel plates with specific materials and different specifications. Usually, such steel plates are processed from blanks. There are many ways to obtain such steel plate blanks. Sand casting It is one of the cheaper methods. [0003] In the steel plate casting process, there are two molding methods, one is to place the model (usually a wooden mold) upright in a sand box for molding and casting (hereinafter referred to as vertical molding), and the other is to place the wooden mold flat Mold casting in the sand box (hereinafter referred to as horizontal molding). [0004] Due to the draft angle of the vertical molding, the poured steel p...
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Application Information
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