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Solid metal feeding method for thick and large casting

A technology for solid metal and large castings, which is applied in the field of solid metal feeding for thick and large castings. It can solve the problems of high man-hour consumption and large metal consumption of casting risers, and achieve short solidification time, small casting shrinkage and easy cleaning. Effect

Pending Publication Date: 2022-07-08
SHAANXI AIRCRAFT CORPORATION
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  • Description
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AI Technical Summary

Problems solved by technology

[0003] The invention overcomes the problems of large metal consumption caused by simply using riser feeding, and consumes more man-hours for smelting, cutting, and processing pouring risers, and provides a solid metal feeding method for thick and large castings

Method used

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  • Solid metal feeding method for thick and large casting

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Embodiment Construction

[0025] A solid metal feeding method for thick and large castings, such as figure 1 shown, including the following steps:

[0026] Step 1: Use procasting software to measure the size and shape of the hot spot of the casting.

[0027] Step 2: According to the calculation of the size and shape of the hot spot of the casting, scale down to 0.3 times to form the size and shape of the required metal block. When the shape and size of the metal block is about 0.3 times the size of the hot node, the metal block can be better fused with the metal at the hot node, and the feeding effect is better. If the size of the metal block is too large, it is not easy to fuse and affects the overall solidification of the casting; if the size of the metal block is too small, the feeding effect will be poor.

[0028] Step 3: Process a metal block of the same material as the casting according to the shape and size determined in Step 2.

[0029] Step 4: Fix the metal block with the same material wire...

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Abstract

The invention belongs to the technical field of metal casting, and discloses a thick and large casting solid metal feeding method which comprises the following steps: step 1, determining the position and size of a casting hot spot according to the structural size of a casting; 2, calculating the size of a solid metal block for feeding according to the size of the hot spot; thirdly, a metal block made of the same material as the casting is machined; fourthly, a casting mold is manufactured; fifthly, the machined metal block is fixed to the center position of a hot center in the casting mold through a metal wire, a supporting frame and the like; sixthly, the fixed metal block is baked before mold closing and pouring of the casting mold; seventhly, mold closing and pouring are conducted, the metal block is completely melted or the surface layer is melted in the casting mold and fused with the casting into a whole along with solidification of the casting, and a part of the casting is formed; eighthly, after the casting is completely solidified, mold dismantling and cleaning are conducted, and the casting is obtained after a casting head is cut; and ninthly, casting heat treatment is conducted.

Description

technical field [0001] The invention belongs to the technical field of thermal processing, and relates to a solid metal feeding method for thick and large castings. Background technique [0002] At present, the feeding method of castings often adopts riser feeding. For thick castings with a thickness of more than 250mm, especially for metals with large volume shrinkage during solidification, due to the poor fluidity of the alloy and poor feeding effect, a relatively large riser is often required to improve The feeding capacity increases the production metal consumption, the metal smelting volume and the labor cost of cutting and processing the pouring riser, and the production cost increases. SUMMARY OF THE INVENTION [0003] The invention overcomes the problems of large metal consumption caused by simply adopting the riser feeding, and more man-hours for smelting, cutting and processing the pouring riser, and provides a solid metal feeding method for thick and large casti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D23/06
CPCB22D23/06Y02P10/20
Inventor 张大成张英杰李红星
Owner SHAANXI AIRCRAFT CORPORATION
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