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Preparation method of wear-resistant steel plate

A wear-resistant steel plate and material mixing technology, which is applied in the field of wear-resistant steel plate preparation, can solve problems such as part failure, reduce the surface contact fatigue strength of the protective steel plate, and compete with sintered protective steel plate, and achieve high overall density and surface density and glossiness Good, the effect of high product performance indicators

Inactive Publication Date: 2017-06-13
HECHI TECH DEV CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It has a wide range of applications in many fields, but it is still difficult to compete with other processes for sintering protective steel plates on engines
This is mainly because there are pores on the surface of the powder metallurgy protective steel plate, and the existence of pores will reduce the contact fatigue strength of the protective steel plate surface, causing parts to fail

Method used

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Embodiment Construction

[0009] The present invention will be further described in conjunction with examples.

[0010] A method for preparing a wear-resistant steel plate, comprising the following steps:

[0011] 1) Mixing, powder material composition by weight percentage: C:0.03~0.10%, Si:0.10~0.50%, Mn:1.00~1.80%, Ti:0.010~0.030%, Nb:0.02~0.09%, Cu: 0.10~0.50%, the balance is iron; then grind it into a powder with an average particle size of no more than 100 microns, and use multiple filling methods to press in the mold with a pressure of 500-550MPa for 10-60 minutes to form;

[0012] 2) Sintering, first pre-sintering at 650-700°C for 1-2 hours, then shaping in the mold under a pressure of 180-200MPa, and then sintering at 1000-1150°C and holding for 1-1.5 hours to obtain continuous billet;

[0013] 3) Heating the continuous casting slab to 1050-1250°C; rolling 3-20 passes at the recrystallization temperature of the steel in the range of 900-1150°C to refine the austenite grains, improve the quali...

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Abstract

The invention discloses a preparation method of a wear-resistant steel plate. The preparation method comprises the following steps: 1) mixing, 2) sintering, and 3) casting heating and crystallization. Compared with the prior art, the preparation method has the following advantages: with the adoption of a special raw material ratio, the produced wear-resistant steel plate is high in performance index, good in glossiness and stability, and high in overall density and surface density, and is not prone to break, and the dimensional precision, production efficiency, die life and cost problems of the existing precision protection steel plate are solved.

Description

technical field [0001] The invention relates to the technical field of steel plate preparation, in particular to a preparation method of a wear-resistant steel plate. Background technique [0002] Powder metallurgy is an efficient process for producing parts of high strength and complex shapes. It has a wide range of applications in many fields, but it is still difficult to compete with other processes for sintering protective steel plates on engines. This is mainly because there are pores on the surface of the powder metallurgy protective steel plate, and the existence of pores will reduce the contact fatigue strength of the surface of the protective steel plate and cause part failure. This manufacturing method has a simple process, and the precision of the manufactured product is also high, but how to increase the density of the protective steel plate, especially the local density of the outer surface, is still a good specific measure. Contents of the invention [0003...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/16
CPCB22F3/164B22F3/18B22F2003/166B22F2003/185
Inventor 胡铁能
Owner HECHI TECH DEV CENT
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