Method for preparing composite wear-resistant foreplate

A kind of technology of guide plate and alloy powder

Inactive Publication Date: 2009-04-22
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the high carbon content, high brittleness and various alloy elements, the production cost is high and the economy is poor.
In this case, it is obviously difficult for a single quality to meet the requiremen...

Method used

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  • Method for preparing composite wear-resistant foreplate
  • Method for preparing composite wear-resistant foreplate
  • Method for preparing composite wear-resistant foreplate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: Preparation of a rod-shaped composite wear-resistant guide plate with high chromium alloy as the hard phase and A3 steel as the matrix

[0025] 1. Use 3mm diameter alloy powder core rod 1 to bundle into bundles. The alloy powder loaded in alloy powder core rod 1 is high-carbon ferrochromium powder with a particle size of 100-150 mesh and cut to the same thickness as the guide plate. high;

[0026] 2. Use resin sand to make guide plate mold 2 according to the casting process requirements;

[0027] 3. Arrange the bundle of alloy powder core rods in the cavity of the casting mold 2 of the wear-resistant guide plate according to the ratio of 50% of the volume of the wear-resistant guide plate;

[0028] 4. Select A3 steel as the base metal 3. After smelting and melting in an intermediate frequency furnace, it reaches 1600°C and is released from the furnace. The molten steel is poured into the cavity of the guide plate mold 2 until it is full;

[0029] 5. Cool at...

Embodiment 2

[0031] Example 2: Preparation of a rod-shaped composite wear-resistant guide plate with tungsten carbide as the hard phase and A3 steel as the matrix

[0032] 1. Select alloy powder core rod 1 with a diameter of 5 mm to make a bundle. The alloy powder loaded in alloy powder core rod 1 is tungsten carbide alloy powder with a particle size of 150 mesh, which is cut to the same length as the thickness of the guide plate;

[0033] 2. Use resin sand to make guide plate mold 2 according to the casting process requirements;

[0034] 3. The alloy powder core rod 1 is preset in the mold cavity of the wear-resistant guide plate according to the ratio of 40% of the volume of the wear-resistant guide plate;

[0035] 4. Select A3 steel as the base metal 3. After smelting and melting in an intermediate frequency furnace, it reaches 1600°C and is released from the furnace. The molten steel is poured into the cavity of the guide plate mold 2 until it is full;

[0036] 5. Cool at room tempera...

Embodiment 3

[0037] Example 3: Preparation of a rod-shaped composite wear-resistant guide plate with tungsten carbide as the hard phase and high manganese steel as the matrix

[0038] 1. Use 3mm diameter alloy powder core rod 1 to make bundles. The alloy powder loaded in alloy powder core rod 1 is tungsten carbide alloy powder, with a particle size of 50-80 mesh, and cut to the same length as the thickness of the guide plate. ;

[0039] 2. Use resin sand to make guide plate mold 2 according to the casting process requirements;

[0040] 3. The alloy powder core bar 1 is preset in the mold cavity of the wear-resistant guide plate according to the ratio of 60% of the volume of the wear-resistant guide plate;

[0041] 4. Select high manganese steel Mn13 as the base metal 3. After smelting and melting in an intermediate frequency furnace, it reaches 1650°C and is released from the furnace. The molten steel is poured into the cavity of the guide plate mold 2 until it is full;

[0042] 5. Cool ...

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Abstract

The invention discloses a method for preparing a composite antiwear guide plate, which comprises the following steps: alloy dust core bars are bound into bundles and arranged in a guide plate casting mould cavity, and the volume of the alloy dust core bars accounts for 20 to 60 percent of the total volume of the guide plate; molten matrix metal is cast into the guide plate casting mould cavity, the alloy dust core bars are melted and dissolved under the heat effect of the matrix metal, a great number of alloy elements and the molten matrix metal generate metallurgical combination reaction so as to generate a highly dispersed alloy structure on the original position; and finally the alloy structure is cooled and solidified, and the bar-shaped hard phase is metallurgically and transitionally combined into a whole with the matrix metal, thereby preparing the composite guide plate which takes the high-strength and high-ductility metal as the matrix and contains a certain number of metallurgically combined bar-shaped hard points. The composite anti-wear guide plate has high strength and high ductility of the matrix metal and high hardness and high wear resistance of the hard phase, can simultaneously bear high pressure and strong wear, and has the characteristics of long service life, low price, simple preparation and so on.

Description

technical field [0001] The invention relates to the preparation of a guide plate for rolling steel, in particular to a method for preparing a composite wear-resistant guide plate. The composite wear-resistant guide plate prepared by the method contains columnar hard points, which realizes wear-resistant The organic unity of toughness and toughness makes the overall mechanical performance of the guide board significantly improved. Background technique [0002] In the profile production of the metallurgical industry, the guide plate of the rolling mill is an indispensable mold. The working environment of guide plates is very harsh, and they often bear the thermal load of high-temperature steel billets, large impacts, strong wear, extrusion, and extreme cooling of cooling water during work. This requires that the guide plate material must have high strength, hardness and excellent wear resistance, as well as high impact toughness, oxidation resistance, and thermal fatigue resi...

Claims

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Application Information

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IPC IPC(8): B22D19/08B21B39/14
Inventor 许云华刘文刚岑启宏牛立斌付永红武宏王永平
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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