Model and method for liquid state formation of aluminium hub disc for special vehicle

A special vehicle, liquid die forging technology, applied in metal extrusion dies, manufacturing tools, forging/pressing/hammer devices, etc., can solve the problem that the performance requirements of the wheel cannot be guaranteed, the high-quality wheel cannot be processed, and the forging is difficult to form. and other problems, to achieve the effect of good parts performance, low cost and few processes

Inactive Publication Date: 2007-01-03
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the drawbacks that the existing mold cannot process high-quality roulette, and the existing forming method has the problems that forging is difficult to form and casting cannot guarantee the performance requirements of the roulette, the present invention provides a mold with a combined punch structure. And the liquid die forging forming method of special vehicle aluminum wheels with low processing cost, high efficiency, good product performance and simple process using this mold

Method used

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  • Model and method for liquid state formation of aluminium hub disc for special vehicle
  • Model and method for liquid state formation of aluminium hub disc for special vehicle

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Experimental program
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Effect test

specific Embodiment approach 1

[0009] Specific Embodiment 1: The die used in the liquid die forging of the special vehicle aluminum wheel described in this embodiment, referring to Fig. 1 is provided with a wear-resistant ring groove 1-1, and a ejector pin 10 is provided in the lower die 1, and the ejector rod 10 runs through the lower die 1 longitudinally, and the upper surface of the ejector rod 10 is flush with the upper surface of the lower die 1 , it also includes an upper template 3 and an inner punch 4 arranged below the upper template 3, the inner punch 4 is connected with the upper template 3 through a spring 5, and an outer punch 6 is set outside the inner punch 4, The upper end of the outer punch 6 is affixed to the upper template 3 through the backing plate 7, and the distance between the lower end of the outer punch 6 and the lower end of the inner punch 4 is higher than the straight wall portion of the wheel to be formed. The spring 5 is a disc spring, a guide post 8 is arranged between the up...

specific Embodiment approach 2

[0012] Specific embodiment two: the difference between this embodiment and specific embodiment one is that due to the effect of disc spring 5 described in specific embodiment one, "the distance ratio between the lower end of the outer punch 6 and the lower end of the inner punch 4 In "height of the straight wall part of the wheel to be formed", the size of the raised part is numerically equal to the ratio of the height of the straight wall of the wheel to be formed to the thickness of the bottom, and the unit is mm. Its function is: at first a press is set above the upper template 3, and the combined punch (inner punch 4 and outer punch 6) is driven downward by the press. When the combined punch goes down and initially pressurizes, it relies on the inner punch to fill the space closed by the lower die 1, the outer casing of the die 2 and the inner punch 4; The load-bearing pressure of the type spring 5 makes the spring compressed, and the inner punch 4 stops; the outer punch 6...

specific Embodiment approach 3

[0013] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the reinforcing body 12 is made of Al 2 o 3sf Short fiber and SiC p Granules are prepared from raw materials, and the specific preparation process is as follows:

[0014] a. Prepare the glue solution according to the following ingredients and volume ratio: distilled water: silica sol: polyvinyl alcohol: glycerin = 100:3:1:3, mix well;

[0015] b. Join Al 2 o 3sf fiber, stir well;

[0016] c. Then add SiC p , stir evenly;

[0017] Wherein, the gel solution prepared in step a accounts for Al 2 o 3sf Fiber and SiC p 10 to 15 times the total mass, the Al 2 o 3sf Fiber and SiC p The mass ratio between is 1:2~2:1, the Al 2 o 3sf Fiber is made of (wt%) Al 2 o 3 72.3% and SiO 2 27.7% blended;

[0018] d. Seep water after stirring, then pressurize and shape; it can be poured into a mold with the structure shown in Figure 3 for water seepage. After the surface water seeps out, pressu...

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Abstract

The present invention relates to material forming technology, and is especially mold and method for liquid state formation of aluminum hub disc for special vehicle. The mold includes a lower mold, a female mold casing, an upper mold, an inner male mold and an outer male mold. The corresponding forming process includes the steps of: making wear resistant reinforcing body, setting the reinforcing body inside the mold, pouring aluminum alloy liquid, and extruding. The mold has simple structure, the forming process is simple and high in efficiency, and the product has high performance.

Description

technical field [0001] The invention relates to a material forming method and a mold used in the material forming process, in particular to a wheel forming method and the used mold. Background technique [0002] There are many forming methods for wheel discs, mainly including: 1) sheet metal forming technology, including welding combination method after hot pressing forming and spinning forming, which are mainly used in the manufacture of steel wheel discs for heavy trucks and special vehicles. The disadvantage is that the processing procedure is long, and a production line formed by more than a dozen forming, machining, and welding equipment is required to cooperate with the processing, especially the dimensional accuracy of the spinning formed parts is high, and the low dimensional accuracy will affect the dynamic balance of the vehicle. Currently, domestic automobile factories use Most of the advanced spinning machines are imported equipment from abroad, so the investment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J13/02B21J5/02B21J1/06B21C25/02B21C23/22B21C33/02B29B11/06B29B11/16B29C67/04
Inventor 杜之明罗守靖
Owner HARBIN INST OF TECH
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