Composite guide plate and preparation process thereof

A composite material and guide plate technology, which is applied in the field of guide plate and its preparation process, can solve the problems that the guide plate cannot meet the needs of actual use, cannot be mass-produced, and the preparation process is complicated, so as to prevent collapse and improve use. Longevity, strong binding effect

Inactive Publication Date: 2011-11-09
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some of the above guide plates and their preparation methods cannot meet the needs of actual use, and some have complex preparation processes and high production costs, which cannot be industrialized on a large scale.

Method used

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  • Composite guide plate and preparation process thereof
  • Composite guide plate and preparation process thereof
  • Composite guide plate and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Such as figure 2 , 3 As shown, the composite material guide plate with tungsten carbide particles as the hard phase and Cr15 high chromium steel as the base material is prepared, and the preparation steps are as follows:

[0020] A. Select tungsten carbide particles with a particle size range of -40~+60 mesh, add 3% polyvinyl alcohol and 10% nickel powder according to the weight of the ceramic particles, and stir evenly;

[0021] B. Make the guide plate model according to the requirements of the casting process (3);

[0022] C. Lay the mixture prepared in step A on the working surface of the guide plate model (3), and compact it properly, and its thickness is 3mm;

[0023] D. Select Cr15 high chromium steel as the base metal (1). After smelting and melting in an intermediate frequency furnace, it will be released at 1580°C. Pour Cr15 high chromium steel into the model (3) until it is full;

[0024] E. After the base metal liquid is cooled and solidified, take out th...

Embodiment 2

[0026] Such as figure 2 , 3 As shown, to prepare a composite material guide plate with tungsten carbide and silicon carbide particles as the hard phase and high carbon steel as the base material, the preparation steps are as follows:

[0027] A. Select tungsten carbide particles and silicon carbide particles (2) with a particle size range of -40~+60 mesh. The ratio of tungsten carbide particles to silicon carbide particles is 1:1. According to the weight of ceramic particles, add 3% polyethylene Alcohol and 5% cobalt powder, stir evenly;

[0028] B. Make the guide plate model according to the requirements of the casting process (3);

[0029] C. Lay the mixture prepared in step A on the working surface of the guide plate model (3), and compact it properly, and its thickness is 2mm;

[0030] D. Select high-carbon steel as the base metal (1), smelt and melt it in an intermediate frequency furnace, and release it at 1580°C. Pour high-carbon steel into the cavity of the model (...

Embodiment 3

[0033] Such as figure 2 , 3 As shown, to prepare tungsten carbide, silicon carbide, and silicon nitride particles as the hard phase, and 40Cr low-alloy steel as the substrate, the composite material guide plate is prepared as follows:

[0034] A. Select tungsten carbide particles, silicon carbide particles and silicon nitride particles (2) with a particle size range of -60~+80 mesh. The ratio of tungsten carbide particles: silicon carbide particles: silicon nitride particles is 2:1:1. According to the weight of ceramic particles, add 2% polyvinyl alcohol and 15% tungsten iron powder, and stir evenly;

[0035] B. Make the guide plate model according to the requirements of the casting process (3);

[0036] C. Lay the mixture prepared in step A on the working surface of the guide plate model (3), and compact it properly, and its thickness is 6mm;

[0037] D. Select 40Cr low-alloy steel as the base metal (1), smelt and melt it in an intermediate frequency furnace, and release ...

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Abstract

The invention discloses a composite guide plate and a preparation process thereof. A layer of hard ceramic particles is compounded on the abraded surface of the composite guide plate to improve the abrasion resistance. The preparation process comprises the following steps of: adding adhesive and alloy powder into the ceramic particles, stirring uniformly, spreading the mixture into a guide plate casting mold according to the design requirement, pouring a base material metal, cooling, stripping and clearing to obtain the composite guide plate. The composite guide plate has the advantages that: the layer of hard ceramic particles is compounded on the surface of the guide plate to form an abrasion-resistant hard phase, and the base material metal is filled in the gaps of the ceramic particles, so that the compounded surface has the abrasion resistance of the ceramic particles and the plastic toughness and the fatigue resistance of the base material metal, the hard phase does not drop easily, the controllability of process parameters is strong, the defects of slag inclusion and the like do not exist in the tissues, the composite guide plate is convenient for machining operation and convenient for industrialized large-batch production, and the service life of the guide plate is prolonged by 5 to 8 times higher than that of a common guide plate.

Description

technical field [0001] The invention relates to general crushing, grinding, conveying, flotation and crushing mechanical equipment and preparation technology, in particular to guide plate under impact wear condition and preparation technology thereof. Background technique [0002] The guide plate has the function of introducing billets and protecting them in the process of rolling steel. Its working surface bears the impact, friction and extrusion of hot steel billets, as well as the chilling of cooling water. The working conditions are relatively harsh, and the working parts are very worn. . Therefore, the replacement of the guide plate is relatively frequent, which has a relatively large impact on production. It can be seen that for the guide plate, the comprehensive mechanical properties at room temperature are required, and the mechanical properties at high temperature are also required. Therefore, the selection of scientific and reasonable materials and manufacturing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D19/14
Inventor 蒋业华隋育栋李祖来岑启宏周荣
Owner KUNMING UNIV OF SCI & TECH
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