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Process method and optimized structure for eliminating shrinkage porosity of side cover of valve body of steering gear

A technology to optimize the structure and steering gear, which is applied in the direction of manufacturing tools, metal processing equipment, casting molding equipment, etc., can solve the problems of reducing the service life and stability of castings, unreasonable gating system design, unreasonable riser design, etc. Achieve the effects of increasing the process subsidy layer, ensuring the appearance, and increasing the success rate of production

Pending Publication Date: 2019-08-13
HENAN GUANGRUI AUTO PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There are many reasons for the shrinkage of the current castings. Because the casting section is too thick, shrinkage is caused by poor feeding, the gating system design is unreasonable, the riser design is unreasonable, the molten iron is not enough to feed the casting, and the riser cannot Establishing an effective feeding channel with the casting will cause shrinkage and porosity of the casting, reducing the service life and stability of the casting

Method used

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  • Process method and optimized structure for eliminating shrinkage porosity of side cover of valve body of steering gear
  • Process method and optimized structure for eliminating shrinkage porosity of side cover of valve body of steering gear
  • Process method and optimized structure for eliminating shrinkage porosity of side cover of valve body of steering gear

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Effect test

Embodiment 1

[0026] A process method for eliminating shrinkage of the side cover of the steering gear valve body, the operation method is as follows:

[0027] ①Increase the diameter of the casting riser and valve body riser on the casting body of the steering gear side cover and the casting body of the steering gear valve body, so as to increase the flow rate of molten iron at the riser and make the casting shrinkage loose;

[0028] ② Change the size of the weight-reducing groove, increase the internal cavity of the weight-reducing groove, and reduce the wall thickness at the corresponding position of the casting through increasing the size of the weight-reducing groove, so that the casting can solidify quickly;

[0029] ③Increase the inclination angle of the draft layer, combined with the increase in the size of the weight-reducing groove, to make the weight-reducing groove better out of the mold and ensure the appearance of the casting;

[0030] ④ Add a process subsidy layer on the outer...

Embodiment 2

[0032] see Figure 1~5 , an optimized structure for eliminating shrinkage of the side cover of the steering gear valve body, including a side cover casting body 1 and a valve body casting body 8, a weight reducing groove 5 is opened on the left top of the side cover casting body 1, and the weight reducing groove 5 The increase in size can effectively reduce the wall thickness at B station 2, so that this position can be solidified quickly, and the increase in the size of the weight-reducing groove 5 enables the product to be released from the mold better, thus ensuring the appearance of the casting. The casting cap 4 is fixedly installed in the middle of the casting body 1 of the side cover, the B station 2 is set on the left side of the casting cap 4, the A station 3 is set on the right side of the casting cap 4, and the outer side of the weight reducing groove 5 is bonded A draft layer 6 is fixed, a subsidy layer 7 is fixed on the right outer wall of the side cover casting b...

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Abstract

The invention discloses an optimized structure for eliminating the shrinkage porosity of a side cover of a valve body of a steering gear. The optimized structure for eliminating the shrinkage porosityof the side cover of the valve body of the steering gear comprises a side cover casting body and a valve body casting body, wherein a weight reduction groove is formed in the top end of the left sideof the side cover casting body; a casting dead head is fixedly installed at the middle position of the side cover casting body; a station B is arranged at the left side of the casting dead head; a station A is arranged at the right side of the casting dead head; and a die drawing layer is bonded and fixed to the outer side of the weight reduction groove. According to the optimized structure for eliminating the shrinkage porosity of the side cover of the valve body of the steering gear, by increasing the size of the dead head, the dead head is made to effectively feed a casting; by adding a process patch layer, an effective feeding channel is established between the dead head and the casting, so that the effect of eliminating the shrinkage porosity at the position of the station A is achieved; by increasing the inclination angle of die drawing, the wall thickness at the position of the station B can be effectively reduced, so that the position is capable of being rapidly solidified; and moreover, due to the dimension increasing of the weight reduction groove, the casting can be better removed from a die, so that the appearance of the casting is ensured.

Description

technical field [0001] The invention belongs to the technical field of steering gear, and in particular relates to a process method and an optimized structure for eliminating shrinkage of a side cover of a valve body of a steering gear. Background technique [0002] Castings are metal shaped objects obtained by various casting methods, that is, the smelted liquid metal is poured into the pre-prepared mold by pouring, injection, suction or other casting methods, and after cooling, it is polished and other subsequent processing methods , the obtained object has a certain shape, size and performance. In the production process of the steering valve body, after the casting is formed, at the final solidification part, the concentrated holes due to shrinkage are called shrinkage holes, and the scattered and small holes are called shrinkage holes. For shrinkage porosity, shrinkage cavity and shrinkage porosity usually occur inside the casting. Due to the existence of shrinkage cavit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/22B22C9/08
CPCB22C9/22B22C9/088
Inventor 袁学辉路檬伊
Owner HENAN GUANGRUI AUTO PARTS
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