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Preparation technology for gradient composite wear-resistant conical liner plate

A preparation process and cone technology, which is applied in the field of preparation technology of gradient composite wear-resistant conical lining plates, can solve the problems of limited wear resistance, insufficient hardening ability, limited application scope, etc., so as to improve wear performance, ensure overall mechanical properties, simple craftsmanship

Active Publication Date: 2013-11-13
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The use of linings in our country has mainly gone through three stages, high manganese steel linings, alloy steel linings and high chromium cast iron linings. In contrast, alloy steel linings have good toughness and low cost, but Its alloy content is less, and its wear resistance is limited, which cannot meet the market demand; high chromium cast iron lining plate has high wear resistance and good performance, but its brittleness and high cost make its application range severely limited; high manganese steel lining Plate is the first generation of wear-resistant material, which has good toughness and is prone to work hardening under strong impact conditions, but its insufficient hardening ability and its easy to produce plastic deformation make it fail early and affect its performance

Method used

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preparation example Construction

[0023] A preparation process for a gradient composite wear-resistant conical liner, said process comprising the following steps:

[0024] (1) Preparation of composite metal particle coating

[0025] a. Preparation of inner composite metal particle coating: 5% to 40% ferrochrome, 10% to 30% ferrovanadium, 35% to 75% iron powder, 1% to 3% carbon powder, 0% ~5% ferromolybdenum and 0%~10% ferro-tungsten are crushed separately, mixed and passed through a 200-300 mesh sieve to obtain the inner layer mixed powder, then add borax and NaF to the inner layer mixed powder for mechanical blending 8-12 hours, after fully mixing, add resin, make a slurry to get the inner layer composite metal particle coating, and set aside;

[0026] Wherein, the add-on of borax is 2~4% of inner layer mixed powder weight, the add-on of NaF is 1~3% of inner layer mixed powder weight, the add-on of resin is 5~4% of inner layer mixed powder weight. 10%;

[0027] b. Preparation of interlayer composite metal ...

Embodiment 1

[0041] A preparation process for a gradient composite wear-resistant conical liner, said process comprising the following steps:

[0042] (1) Preparation of composite metal particle coating

[0043] a. Preparation of inner layer composite metal particle coating: take 5% ferrochromium, 10% ferrovanadium, 72% iron powder, 1% carbon powder, 2% ferromolybdenum and 10% ferrotungsten according to mass percentage, and pulverize them respectively Mix and pass through a 200-300 mesh sieve to obtain a mixed powder, then add borax with a weight of 2% of the mixed powder and NaF with a weight of 1% of the mixed powder to the mixed powder, and perform mechanical blending for 8 hours. Add the furan resin of 8% by weight of the mixed powder, adjust it into a slurry to obtain the inner layer composite metal particle coating, and set aside;

[0044] b. Preparation of interlayer composite metal particle coating: take 5% ferrochrome, 30% ferrovanadium, 50% iron powder, 3% carbon powder, 2% ferr...

Embodiment 2

[0054] A preparation process for a gradient composite wear-resistant conical liner, said process comprising the following steps:

[0055] (1) Preparation of composite metal particle coating

[0056] a. Preparation of inner layer composite metal particle coating: take 25% ferrochromium, 15% ferrovanadium, 55% iron powder, 2% carbon powder and 3% ferromolybdenum according to the mass percentage, grind them respectively and mix them for 200~ 300 mesh sieves to obtain the mixed powder, then add borax with 2% mixed powder weight and 1% NaF with mixed powder weight in the mixed powder, carry out mechanical blending for 8 hours, add mixed powder weight after fully mixing 8% furan resin is adjusted into a slurry to obtain the inner layer composite metal particle coating, which is for subsequent use;

[0057] b. Preparation of interlayer composite metal particle coating: Take 25% ferrochromium, 25% ferrovanadium, 36.5% iron powder, 3.5% carbon powder, 5% ferromolybdenum and 5% ferrotu...

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Abstract

The invention relates to a preparation technology for a gradient composite wear-resistant conical liner plate. Firstly, composite alloy powdery coating is prepared, and coated on sand mould positions corresponding to wear parts to form a composite coating. Then, metal liquid is poured to form a casting, and the casting is subjected to quenching tempering treatment. The preparation technology is simple. Wear-resistant alloy components are distributed in a gradient manner, and therefore overall mechanical properties of the conical liner plate are guaranteed, and wear resistance of the casting is significantly improved.

Description

technical field [0001] The invention relates to the technical field of manufacture of wear-resistant conical liners, in particular to a preparation process of gradient composite wear-resistant conical liners. Background technique [0002] The use of linings in our country has mainly gone through three stages, high manganese steel linings, alloy steel linings and high chromium cast iron linings. In contrast, alloy steel linings have good toughness and low cost, but Its alloy content is less, and its wear resistance is limited, which cannot meet the market demand; high chromium cast iron lining plate has high wear resistance and good performance, but its brittleness and high cost make its application range severely limited; high manganese steel lining Plates are the first generation of wear-resistant materials. They have good toughness and are prone to work hardening under strong impact conditions. However, their insufficient hardening ability and easy plastic deformation make...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C3/00B22D19/08
Inventor 魏世忠徐流杰刘亚民李继文张国赏
Owner HENAN UNIV OF SCI & TECH
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