Preparation method of wear-resistant steel block for insert

A technology of wear-resistant steel and inserts, applied in the field of preparation of wear-resistant steel blocks, can solve the problems of inaccurate positioning and easy falling off.

Active Publication Date: 2019-06-14
CHINA WEAPON SCI ACADEMY NINGBO BRANCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are generally deficiencies in the prior art that the positioning is not accurate enough and easy to fall off, so it needs to be improved

Method used

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  • Preparation method of wear-resistant steel block for insert
  • Preparation method of wear-resistant steel block for insert
  • Preparation method of wear-resistant steel block for insert

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A preparation method of a wear-resistant steel block capable of precise positioning and anti-falling off is as follows:

[0031] a. Wear-resistant steel block material: 38CrSi, the mass percentage of its composition is: C: 0.35%-0.43%; Si: 1.00%-1.30%; Mn: 0.30%-0.60%; Cr: 1.30%-1.60%.

[0032] b. Wear-resistant steel block structure: The wear-resistant steel block is mainly for the main body 1 and the positioning part 2. The body part 1 and the positioning part 2 are self-contained, and the length and width directions of the body part 1 are designed to be chamfered, which can prevent falling off after casting; at the same time, the sharp corners of the body part 1 are designed to be rounded , to prevent stress concentration during the subsequent casting process; specifically, refer to figure 1 , figure 2 and image 3 As shown, the body portion 1 includes a square upper end surface and a square lower end surface, the lower end surface is larger than the upper end su...

Embodiment 2

[0039] A wear-resistant steel block 2 capable of precise positioning and anti-falling off, the preparation method is as follows:

[0040] a. Wear-resistant steel block material: 38CrSi, the mass percentage of its composition is: C: 0.35%-0.43%; Si: 1.00%-1.30%; Mn: 0.30%-0.60%; Cr: 1.30%-1.60%.

[0041] b. Wear-resistant steel block structure: refer to Example 1.

[0042] c. Die forging forming of wear-resistant steel block: the forging temperature of wear-resistant steel block 38CrSi bar is 1100°C, the holding time is 0.5min / mm, and the initial blank of wear-resistant steel block is formed by one-time die forging, and finally the edge is trimmed by cutting die. A wear-resistant steel block blank is obtained.

[0043] d. Machining of wear-resistant steel block: In order to achieve better precise positioning, the center of the main body part is used as the processing reference, and the positioning part is finished to achieve concentricity or coaxiality between the main body an...

Embodiment 3

[0048] A wear-resistant steel block 3 capable of precise positioning and anti-falling off, the preparation method of which is as follows:

[0049] a. Wear-resistant steel block material: 38CrSi, the mass percentage of its composition is: C: 0.35%-0.43%; Si: 1.00%-1.30%; Mn: 0.30%-0.60%; Cr: 1.30%-1.60%.

[0050] b. Wear-resistant steel block structure: refer to Example 1.

[0051] c. Die forging forming of wear-resistant steel block: the forging temperature of wear-resistant steel block 38CrSi bar is 1150°C, the holding time is 0.6min / mm, and the initial blank of wear-resistant steel block is formed by one-time die forging, and finally the edge is trimmed by cutting die. A wear-resistant steel block blank is obtained.

[0052] d. Machining of wear-resistant steel block: In order to achieve better precise positioning, the center of the main body part is used as the processing reference, and the positioning part is finished to achieve concentricity or coaxiality between the mai...

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Abstract

The invention provides a preparation method of a wear-resistant steel block of an inlaid part. The preparation method is characterized by comprising the following steps: a, wear-resistant steel blockmaterials are made of 38CrSi; b, the wear-resistant steel block comprises a body part and a positioning part which is integrally formed at the upper end surface of the body part, the body part comprises a square upper end surface and a square lower end surface, the lower end surface is larger than the upper end surface and is in a trapezoid frustum shape, and the connecting bottom angle between the lower end surface and the side wall is a round angle; and the positioning part is a cuboid, and the positioning part and the body part are positioned on the central axis; c, the wear-resistant steelblock is subjected to die forging forming; d, mechanical machining is carried out on the wear-resistant steel block; e, the heat treatment is carried out on the wear-resistant steel block; and f, thesurface of the wear-resistant steel block is treated to obtain a wear-resistant steel block finished product. The preparation method has the advantages of being good in wear resistance, accurate in positioning and not prone to falling off.

Description

technical field [0001] The invention relates to a preparation method of a wear-resistant steel block. The wear-resistant steel block is mainly used as an inlay in steel-aluminum composite (or steel-magnesium composite). Background technique [0002] With the increase of energy shortage, energy saving, environmental protection and high mobility of vehicles, the lightweight of components has been widely used in various industries. For example, in the automotive field, the lightweight of components and vehicles can improve the handling of vehicles. It also provides excellent fuel economy. The fuel consumption of a car mainly depends on the displacement of the engine and the total mass of the car. Under the premise of keeping the overall quality, performance and cost of the car unchanged or even optimized, reducing the weight of the car itself can increase output power, reduce noise, improve handling and reliability. Performance, increase vehicle speed, reduce fuel consumption,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 费良军施虹霞陈大辉周灵展朱秀荣徐永东彭银江谭锁奎王军徐英
Owner CHINA WEAPON SCI ACADEMY NINGBO BRANCH
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