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Casting production technology of right hinged support

A technology for casting production and hinged brackets, which is used in manufacturing tools, casting molding equipment, casting molds, etc., can solve the problems of slag inclusion, burrs and sharp edges, and the surface of castings is not smooth enough to achieve easy pouring, not easy to inhale, The effect of excellent slag resistance

Inactive Publication Date: 2015-05-20
青岛齐力铸钢有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the current manufacturing process of the right hinged bracket, the surface of the casting is not smooth enough, with burrs and sharp edges, and most of them have obvious defects such as blisters, pores, and slag inclusions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0014] The casting production process of the right hinged bracket of the present embodiment comprises the following steps:

[0015] (1) Use solid wood to freeze the mold core, then put fine sand powder on the mold core, and freeze it together with the mold core, then bury the mold core in the sand box, and fill and press it with molding sand around it Tighten, then heat and melt to remove the mold core to form a casting blank, and then dry the casting blank at a drying temperature of 60°C, and the casting mold can be obtained after drying;

[0016] (2) Since the casting is ductile iron and a direct practical riser is used, it is necessary to consider whether the effective feeding volume of the riser meets the liquid shrinkage of the casting. The pouring temperature of the casting is 1450°C, and the solidus temperature is 1148°C. For every 100°C increase in superheat, the liquid shrinkage increases by 1.8%, so the total liquid shrinkage is 3.6%. After the liquid shrinkage, the ...

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PUM

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Abstract

The invention discloses a casting production technology of a right hinged support. The above casting is a small casting, has a complex structure and is not symmetric, so an integral sand core is selected. A closed casting system is adopted after casting system analysis, and has the advantages of good slag resistance, difficult air entry, easy cleaning of an ingate, less metal consumption, stable metal casting, no injection and difficult oxidation. A sprue is arranged at a position close to the inner wall of a sandbox, so casting is convenient; an overlapping mode selected in the invention has excellent slag resistance in order to further avoid slag inclusion generation and other defects, so the raw material utilization rate is high, and the production cost is reduced; and the caliber dimension of the bulb tube of a cast finished product is accurate, and no machining is needed, so the quality of the casting is effectively guaranteed.

Description

[0001] technical field [0002] The invention belongs to the technical field of casting, and in particular relates to a casting production process of a right hinged bracket. [0003] Background technique [0004] The manufacturing process of the casting of the right hinged bracket includes at least the manufacturing and pouring process of the casting mold. In the current manufacturing process of the right hinged bracket, the surface of the casting is not smooth enough, with burrs and sharp edges, and most of them have obvious defects such as blisters, pores, and slag inclusions. [0005] Contents of the invention [0006] In order to overcome the above-mentioned technical problems existing in the prior art field, the object of the present invention is to provide a casting production process of the right hinged bracket, selecting resin sand for manual molding. Due to the self-expansion effect of ductile iron when solidified, the high rigidity of the resin sand mold can b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/04B22C9/10B22C9/08B22C9/22
CPCB22C9/02B22C9/088B22C9/22
Inventor 刘占向
Owner 青岛齐力铸钢有限公司
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