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Casting and cooling system and cooling method of high-carbon steel thin-walled annular casting

A technology of cooling system and ring casting, applied in the direction of casting mold, casting mold composition, casting molding equipment, etc., can solve the problems of easy cracks and shrinkage porosity, and achieve the effect of increasing the yield

Active Publication Date: 2016-05-25
KOCEL STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the defects that cracks and shrinkage are prone to occur in the casting of large thin-walled annular steel castings of the above-mentioned high-carbon steel material in the prior art, and provides a pouring cooling system for high-carbon steel thin-walled annular castings to overcome the above-mentioned defects

Method used

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  • Casting and cooling system and cooling method of high-carbon steel thin-walled annular casting
  • Casting and cooling system and cooling method of high-carbon steel thin-walled annular casting
  • Casting and cooling system and cooling method of high-carbon steel thin-walled annular casting

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Embodiment Construction

[0020] Such as Figure 4 — Figure 8 As shown, it is the pouring cooling system of the high carbon steel thin-walled annular casting of the present invention. In this system, an annular cooling channel 8 is arranged at intervals near the thinnest wall thickness inside the thin-walled cavity of the casting. The annular cooling channel 8 is provided with Extending to the air inlet pipe 9 and the air outlet pipe 10 outside the sand box, the air inlet pipe 9 is connected with the compressed air source; on the outside of the thin-walled cavity of the casting, a number of tie bars 12 connected with the casting cavity are pasted, and the length direction of the tie bars 12 It is arranged along the axial direction of the annular thin wall.

[0021] In order to further promote the uniform cooling and solidification of the thin-walled parts, the above-mentioned annular cooling channel 8 includes several layers of arc-shaped cooling pipes arranged at intervals along the axial direction ...

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Abstract

The invention relates to a casting and cooling system and a cooling method of a high-carbon steel thin-walled annular casting in the technical field of casting techniques. The casting and cooling system comprises annular cooling channels formed at the position, close to the thinnest wall, of the inner side of a thin-wall cavity of the casting at intervals, wherein each annular cooling channel is provided with an air inlet pipe and an air outlet pipe extending to the outside of a sand box, and the air inlet pipe is communicated with a compressed air source. A plurality of tiepieces connected with the cavity of the casting are arranged on the outer side of the thin-wall cavity of the casting in an adhered mode, and the length directions of the tiepieces are set in the axial direction of the annular thin wall. The cooling system is provided with the annular cooling channels formed in the inner side of the thin-wall cavity of the casting at intervals to replace chilling blocks, the thin-wall position is forcedly cooled, and the crack defect at the thin-wall position is overcome. The tiepieces are added on the outer side of the middle thin-wall position of the casting to decrease the tensile stress at the middle thin-wall position, heat at the middle thin-wall position is dissipated out through the tiepieces to enable the middle thin-wall position to quickly solidify due to the fact that the tiepieces solidify firstly, and accordingly shrinkage is prevented from being produced at the thin-wall position of the casting.

Description

technical field [0001] The invention relates to the technical field of casting technology, in particular to a pouring cooling system and cooling method for high-carbon steel thin-walled annular castings. Background technique [0002] A large thin-walled annular steel casting made of high carbon steel produced by our company, its structure is as follows figure 1 As shown, there are two thick upper flanges 1 and lower flanges 2, and an annular thin-walled part 3 in the middle. The difference between the maximum wall thickness and the minimum wall thickness of the casting is large. In addition, high-carbon steel castings have a high carbon equivalent, and the material is relatively brittle and hard, which is prone to cracks. The casting process scheme of this type of casting in the prior art is as figure 2 As shown, an open riser 4 is set on the upper flange 1, a subsidy 5 is set directly below the open riser 4, a dark riser is laid on the inner side of the lower flange 2, a...

Claims

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Application Information

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IPC IPC(8): B22C9/24B22D27/04
CPCB22C9/24B22D27/04
Inventor 张立文杨建郭小强
Owner KOCEL STEEL
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