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Ceramic particle reinforced wear-resisting insert and manufacturing method thereof

A production method and technology of ceramic particles, which are applied in the field of wear-resistant composite materials, can solve the problems of poor performance of composite wear-resistant parts, easy falling and layering of metal powder, low preparation efficiency, etc., so as to optimize the filling and shaping performance and strength. Suitable, good wetting effect

Active Publication Date: 2017-02-15
GUANGZHOU PANYU POLYTECHNIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has the disadvantages of occupying a large number of molds, the metal powder is easy to fall and delaminate after drying, and the production efficiency is low.
[0009] In summary, when high-hardness ceramic particles are directly used as aggregates in castings, there are often many problems, and the resulting composite wear-resistant parts have poor performance

Method used

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  • Ceramic particle reinforced wear-resisting insert and manufacturing method thereof
  • Ceramic particle reinforced wear-resisting insert and manufacturing method thereof
  • Ceramic particle reinforced wear-resisting insert and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Example 1: Ceramic Particle Reinforced Wear-Resistant Insert for High Chromium Cast Iron Blow Bar

[0059] 1) The shape of the ceramic insert is a cuboid, and the cross-sectional size is 250mm×95mm (the cross-section is as follows figure 1 As shown), the thickness is 100mm, the through hole is circular, the aperture is 15mm, the through holes are staggered and evenly distributed, and the center distance of the through holes is 35mm;

[0060] 2) The mold is made of aluminum alloy, the through-hole mandrel is fixed on the bottom plate of the mold, the draft angle of the mandrel is 3°, and then the aluminum alloy is used to make a box frame with a size of 250mm×95mm×100mm and the diagonal can be removed. Then assemble the box frame and the mold, place it on the working table of the shock-type out-of-box molding machine, set 2 support and locking positions along the centerline of the width of the insert, and preset M6 stainless steel nuts with covers as locking devices ; ...

Embodiment 2

[0066] Example 2: Ceramic Particle Reinforced Wear-Resistant Inserts for High Chromium Cast Iron Grinding Roller Sleeves

[0067] 1) The shape of the ceramic insert is an arc fan-shaped body, and the expanded size is 500mm×300mm (the cross-section is as follows figure 2 As shown), the thickness is 80mm, the through hole is a regular hexagon, the side length of the regular hexagon is 20mm, the through holes are staggered and evenly distributed, and the center distance of the through holes is 50mm;

[0068] 2) The mold is made of aluminum alloy, and the through-hole mandrel is a movable type that can be extracted separately. It is positioned through the core seat at the bottom of the mold. The draft angle of the mandrel is 3°, and then the aluminum alloy is used to make the size 500mm×300mm× 80mm and removable box frame diagonally, and then assemble the box frame and the mold, place it on the workbench of the vibration pressure type out-of-box molding machine, set 2 support and...

Embodiment 3

[0074] Example 3: Ceramic Particle Reinforced Wear-Resistant Insert for High Manganese Steel Magnetic Liner

[0075] 1) The shape of the ceramic insert is a rectangular sheet with a size of 80mm×40mm (section such as image 3 As shown), the thickness is 4mm, and two positioning through holes are set along the width centerline, the through holes are circular, and the aperture is 5mm;

[0076] 2) The mold is made of aluminum alloy, the through-hole mandrel is fixed on the formwork, the draft angle of the mandrel is 5°, and then the aluminum alloy is used to make a box frame with a size of 80mm×40mm×4mm and the diagonal can be removed. Assembled with the mold, placed on the workbench of the vibration pressure type out-of-box molding machine;

[0077] 3) Select zirconia-toughened alumina ceramic particles with a zirconia content of 20wt%, the particle size is 1-3 mm, and the shape is irregular polygons. The ceramic particles are degreased and cleaned, and then cleaned and dried a...

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Abstract

The invention discloses a ceramic particle reinforced wear-resisting insert and a manufacturing method thereof. The manufacturing method comprises the following steps of: 1) determining the shape, the structure and the dimension of the insert according to the shape of a cast product, and manufacturing the mould for pressing the insert by aluminum alloy; 2) carrying out oil removal, chemical nickel plating, and cleaning and drying on zirconium oxide toughened aluminum oxide ceramic particles; 3) preparing mould materials for the insert; 4) filling a mould cavity of the mould in the step 1) with the mould materials, compacting and pressing the mould materials by a vibrating-pressing type out-of-the-box molding machine, and de-molding to obtain preform; 5) putting the preform into a hot-blast stove, and sufficiently drying the preform; and 6) putting the dried preform into a vacuum sintering furnace, carrying out vacuum sintering, and cooling and discharging, thereby obtaining the ceramic particle reinforced wear-resisting insert. The manufacturing method is high in efficiency, is stable in shaping, and is good in casting-penetration effect; and the manufactured ceramic particle reinforced wear-resisting insert has good high temperature collapsibility resistance, is good in wetting property with molten metal and is excellent in wear resistance.

Description

technical field [0001] The invention relates to a ceramic particle reinforced wear-resistant insert and a manufacturing method thereof, belonging to the technical field of wear-resistant composite materials. Background technique [0002] Wear-resistant materials can effectively improve the wear-resistant performance of workpieces, and are widely used. They can be mainly divided into high-manganese steel series, high-chromium cast iron series, wear-resistant alloy steel series, etc., and are suitable for different working conditions. Due to the needs of production, many equipment need to operate for a long time under harsh working conditions such as high temperature, high pressure, and high speed, so higher requirements are put forward for the surface strength and wear resistance of the equipment. However, the potential of traditional wear-resistant materials with a single material has been fully tapped after various measures such as material composition adjustment, heat trea...

Claims

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Application Information

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IPC IPC(8): B22F1/00B22F3/093B22F3/10B22F5/00C22C29/12C22C1/05C22C1/10
CPCC22C1/051C22C29/005C22C29/12B22F3/093B22F3/10B22F5/00B22F2998/10B22F1/105
Inventor 袁军平
Owner GUANGZHOU PANYU POLYTECHNIC
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