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Casting process for high-manganese steel track plates

A casting process and track shoe technology, which is applied in the field of armored vehicle track shoe processing, can solve the problems that affect the service life of the track shoe, the normal driving of vehicles, the high crack rate, and the impact on tactical performance, so as to improve the quality level and achieve good economic benefits , The effect of improving the reliability of the vehicle

Inactive Publication Date: 2018-11-30
内蒙古第一机械集团股份有限公司
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Problems solved by technology

In view of the high crack rate of tank track shoes over the years, and even frequent fracture problems, especially when subjected to accidental factors of sudden mutation stress, it bears greater extrusion and bending stress, which is very easy to cause failure and subsequent fatigue damage. Cracks or even breaks will affect the service life of the track shoes and the normal driving of the vehicle, thereby affecting the tactical performance

Method used

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  • Casting process for high-manganese steel track plates

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Embodiment Construction

[0026] The concrete steps of the casting process of a kind of high manganese steel crawler shoe of the present invention are as follows:

[0027] The first step is to determine the manufacturing mold.

[0028] The mold meets the following requirements,

[0029] (1) The connecting arm of the track shoe is flattened at the ground bar connected to it, which strengthens the strength of the connecting arm;

[0030] (2) The thickness of the pin lug reinforcing rib connecting the track shoe connecting arm to the inner side of the plate body is 10mm to 11mm, which strengthens the strength and reliability here;

[0031] (3) The landing surface of the connecting arm of the track shoe is raised by 2 mm upwards, thereby reducing the probability that the connecting arm directly touches the ground and bears the alternating load instantaneously;

[0032] (4) The track shoe connecting arm is inclined upwards from 1 / 3 length by 7mm to 8mm, so that the force distribution at 1 / 3 length is more...

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Abstract

The invention relates to a casting process for high-manganese steel track plates. The casting process comprises the following specific steps: (1) a manufacturing mold is determined; (2) a sand mold and a lower core box are manufactured; (3) waste steel is smelted to prepare pour steel; 1) alloy elements of vanadium and titanium are added before smelting as nucleating agents 2) white slag is continuously prepared in the smelting reduction process; and the content of phosphorous is controlled below 0.035%; (4) pouring: the tapping temperature of the pour steel is 1590-1620 DEG C; and the bag guidance is performed once before pouring, so that the pouring temperature is 1415-1435 DEG C; and (5) unpacking: the pouring is performed by 50 minutes for unpacking. The casting process reduces the crack rate and the rupture probability of the high-manganese steel track plates, and prominently prolongs the service life.

Description

technical field [0001] The invention belongs to the technical field of armored vehicle track shoe processing, and in particular relates to a casting process of high manganese steel track shoe. Background technique [0002] High manganese steel cast track shoe is a key component of the Chinese army's tracked series tank action system. The existing high manganese steel track shoes are usually cast, and the high manganese steel cast track shoes in our country have fractures to varying degrees during the test runs of different groups. Taking Group C test of 1,000 kilometers in 2007 as an example, after driving 1,000 kilometers, the crack rate of track shoes was 29.4%, after 1,500 kilometers, the crack rate of track shoes was 90.7%, and after 2,000 kilometers, the crack rate of track shoes was as high as 99.5%. , can not reach the service life requirement of track shoe 3000 kilometers. The cracks are mainly concentrated on the left and right connecting arms, the reinforcing rib...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/02B22C9/08B22C9/22C21C7/076C21C7/064
CPCB22C9/02B22C9/082B22C9/088B22C9/22C21C7/0006C21C7/0645C21C7/076Y02P10/20
Inventor 苏雅拉图周建军徐浩杰陈志军薛立春何立军滕虹陈鸿飞武玉平王旭杨玉红刘斌李爽宫伟祥杨清闫志武
Owner 内蒙古第一机械集团股份有限公司
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