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Preparation method of micro-powder-coated hexagonal-prism-shaped ZTA/Fe composite material

A hexagonal prism and composite material technology, applied in the field of mechanical parts casting, can solve the problems of high production cost, cumbersome process, complex technical process, etc., and achieve the effects of improving production efficiency, low preparation cost and simple production process

Pending Publication Date: 2022-08-09
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the problems that the existing ZTA ceramic steel material prefabricated body has complex preparation technology, low bonding strength between ZTA particles and metal matrix, high production cost and complicated process, the purpose of the present invention is to provide a micropowder-coated hexagonal prism-shaped ZTA / Fe composite preparation method

Method used

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  • Preparation method of micro-powder-coated hexagonal-prism-shaped ZTA/Fe composite material
  • Preparation method of micro-powder-coated hexagonal-prism-shaped ZTA/Fe composite material
  • Preparation method of micro-powder-coated hexagonal-prism-shaped ZTA/Fe composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] a. After cutting and bonding the EPS foam board, a hexagonal prismatic lost foam model is obtained;

[0041] b. Mix the binder and ZTA ceramic particles evenly, and the addition amount of the binder accounts for 10% of the mass of ZTA; the mixing conditions of the binder and ZTA ceramic particles are: stirring at 150r / min for 300s;

[0042] c. Put the mixture of binder+ZTA ceramics into the pre-prepared hexagonal prismatic lost foam model and dry it, the drying temperature is 50°C, and the drying time is 22h;

[0043] d. Bond a layer of EPS pattern on the hexagonal prismatic lost foam model containing the binder + ZTA ceramic mixture;

[0044] e. Apply the refractory paint on the surface of the hexagonal EPF model with the EPS pattern on the surface and the binder + ZTA ceramic mixture inside. After applying the refractory paint, dry it at a drying temperature of 55 °C and repeat it three times. Each drying time is 7h to obtain a hexagonal honeycomb lost foam model;

...

Embodiment 2

[0056] a. After cutting and bonding the EPS foam board, a hexagonal prismatic lost foam model is obtained, such as figure 1 shown;

[0057] b. The type of ceramic micropowder and its relative mass ratio of ZTA ceramic particles are: B 4 C: 2%, Al 2 O 3p : 2%, Al 2 O 3f : 1.5%, TiO 2 : 1%, Ni: 1%, Al: 0.5%, Cr: 0.5%, NiCrBSi: 0.5%;

[0058] c. Mix the ceramic micropowder + binder evenly, and the mixing conditions of ceramic micropowder + binder are: stirring at 180r / min for 260s;

[0059] d. Add ZTA ceramic particles to the mixture of ceramic micropowder + binder and mix them evenly. The mixing conditions are: stirring at 180r / min for 260s;

[0060] e. Put the mixture of ceramic micropowder+binder+ZTA ceramics into the pre-prepared hexagonal prismatic EPF model and dry it, the drying temperature is 55°C, and the drying time is 24h to obtain the hexagonal prismatic honeycomb ZTA / Fe composite material preform lost foam model;

[0061] f. Bond a layer of EPS pattern on t...

Embodiment 3

[0076] a. After cutting and bonding the EPS foam board, a hexagonal prismatic lost foam model is obtained;

[0077] b. The type of ceramic micropowder and the relative mass ratio of ZTA ceramic particles are: B 4 C: 2.0%, Al 2 O 3f : 2.0%, Cr 3 C 2 : 2.0%, TiNC: 1.0%, MnO 2 : 1.0%, SiC: 0.5%, NiCrBSi: 0.5%;

[0078] c. Mix the ceramic micropowder + binder evenly, and the mixing conditions of ceramic micropowder + binder are: stirring at 180r / min for 260s;

[0079] d. Add ZTA ceramic particles to the mixture of ceramic micropowder + binder and mix them evenly. The mixing conditions are: stirring at 180r / min for 260s;

[0080] e. Put the mixture of ceramic micropowder+binder+ZTA ceramics into the pre-prepared hexagonal prismatic EPF model and dry it, the drying temperature is 55°C, and the drying time is 24h to obtain the hexagonal prismatic honeycomb ZTA / Fe composite material preform lost foam model;

[0081] f. Bond a layer of EPS pattern on the hexagonal prism-shaped...

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Abstract

The invention discloses a preparation method of a micro-powder-coated hexagonal-prism-shaped ZTA / Fe composite material, and belongs to the technical field of mechanical part casting, and the preparation method comprises the following process steps: cutting and bonding an EPS foam board to obtain a hexagonal-prism-shaped lost foam model; uniformly mixing the ceramic micro powder and the adhesive; adding ZTA ceramic particles into the mixed material, and uniformly mixing; putting a mixture of the ceramic micro powder, the adhesive and the ZTA ceramic into a pre-prepared hexagonal prism-shaped lost foam model, and drying to obtain a hexagonal prism-shaped honeycomb-shaped ZTA / Fe composite material preform lost foam model; bonding a layer of EPS (Expandable Polystyrene) pattern on the upper surface of the hexagonal-prism-shaped honeycomb ZTA / Fe composite material preform evanescent mode model; and the surface of the model is coated with refractory paint, the model is put into a sand box for negative pressure pumping, poured high-chromium cast iron metal liquid is poured along a pouring system, and the hexagonal-prism-shaped honeycomb ZTA / Fe composite material coated with the ceramic micro powder is obtained after cooling.

Description

technical field [0001] The invention relates to the technical field of casting of mechanical parts, in particular to a preparation method of a micropowder-coated hexagonal prism-shaped ZTA / Fe composite material. Background technique [0002] Fracture, corrosion and wear are the three main failure modes of materials and equipment. The inevitable wear and tear of materials and equipment during service has caused serious energy consumption of consumables. Wear-resistant metal materials are in great demand in many important industrial fields such as coal mining, metallurgy, electric power, construction, national defense, and transportation. A large part of the metal wear-resistant parts in these industries is high-chromium cast iron. The working conditions of wear-resistant metal parts are mainly characterized by complex stress and strong friction and impact. The service conditions are very harsh, and the severe working conditions have caused great material loss. According to th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C7/02B22D18/04B22D19/14C22C37/08C22C37/10
CPCB22C7/023B22D18/04B22D19/14C22C37/08C22C37/10
Inventor 谭建波
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY