Semisolid forming method for aluminum-base composite material creeper tread of special vehicle and forming mold thereof

A semi-solid forming technology of aluminum-based composite materials, which is applied in the field of semi-solid forming of aluminum-based composite track shoes of special vehicles and its forming dies, can solve problems such as inability to guarantee track shoe performance, track shoe weight, and difficulty in forging forging. Achieve the effect of quality reduction, good parts performance and high production efficiency

Inactive Publication Date: 2010-11-10
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems that the track shoes made of steel are heavy, forging is difficult to form, and the performance of the track shoes cannot be guaranteed by casting, and provides a semi-solid forming method for special vehicle aluminum-based composite material track shoes

Method used

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  • Semisolid forming method for aluminum-base composite material creeper tread of special vehicle and forming mold thereof
  • Semisolid forming method for aluminum-base composite material creeper tread of special vehicle and forming mold thereof
  • Semisolid forming method for aluminum-base composite material creeper tread of special vehicle and forming mold thereof

Examples

Experimental program
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Effect test

specific Embodiment approach 1

[0013] Specific implementation mode 1: In this implementation mode, the semi-solid forming method of aluminum-based composite track shoes for special vehicles is as follows: 1. SiC p Soak in HF solution with a mass concentration of 10% for 24 hours for pickling, and the SiC after pickling p Wash with distilled water every 1 to 2 hours until the washing solution is neutral; 2. SiC that has been treated in step 1 p Dry in a drying oven at 140°C for 24 to 28 hours, and then grind to powder; 3. Powder SiC p Sinter at 800°C±5°C for 2 to 3 hours, stirring continuously during the sintering process; 4. Weigh 2A50 aluminum alloy and SiC treated in step 3 p , where SiC p Accounting for 2A50 aluminum alloy and SiC p The volume fraction of the total amount is 5vol%~10vol%; 5. Put the weighed SiC p Wrap it with aluminum foil, put it into a stirring crucible and heat it to 600°C~620°C, and keep it warm for 30~40min; Magnesium, pure magnesium accounts for 2A50 aluminum alloy, pure magne...

specific Embodiment approach 2

[0019] Specific embodiment two: the difference between this embodiment and specific embodiment one is that in step three, the powdered SiC p Sintered at 798°C. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0020] Specific embodiment three: the difference between this embodiment and specific embodiment one is that in step three, the powdered SiC p Sintered at 803°C. Others are the same as in the first embodiment.

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Abstract

The invention discloses a semisolid forming method for an aluminum-base composite material creeper tread of a special vehicle and a forming mold thereof, which relates to a semisolid forming method for a creeper tread and a forming mold thereof. The invention solves the problems that the creeper tread prepared from steel is heavy, can not be formed easily by forging, and can not guarantee the performance of the creeper tread by casting. The method of the invention comprises the following steps: (1) wrapping pretreated SiCp with aluminum foil and then putting into a stirring crucible for heating and insulating; and (2) pouring 2A50 aluminum alloy into the stirring crucible in step (1) to prepare the semisolid blank, then pouring the semisolid blank into the forming mold, pressurizing and forming. The forming mold is manufactured from an outer male mold, an inner male mold, a female mold and a mold core from top to bottom sequentially and integrally. The workpiece made by the method has good performance, lightened weight, improved wear resistance, one-time forming and high production efficiency. Compared with the creeper tread workpiece formed by liquid forging of aluminum alloy, the wearing capacity of the aluminum-base composite material creeper tread of the invention is reduced by 50%-70%.

Description

technical field [0001] The invention relates to a semi-solid forming method for track shoes and a forming mold thereof. Background technique [0002] Tracks play an important role in bearing, steering, and traction in vehicles. At present, the materials for manufacturing track shoes are generally made of steel, among which high manganese steel is the most widely used, but with the development trend of smaller and lighter special vehicles , How to improve the quality of track shoes, reduce the weight of track shoes, and prolong the life of track shoes is the main direction of research. Its bulky armor system must be the direction of improvement, and the requirement of replacing steel with aluminum is increasingly urgent. The existing track forming methods have the problems that forging is difficult to form and casting cannot guarantee the performance requirements of track shoes. Contents of the invention [0003] The object of the present invention is to provide a semi-sol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/10C22C21/08B22D17/00B22D17/22
Inventor 杜之明陈刚柳君程远胜姜巨福
Owner HARBIN INST OF TECH
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