Preparation method of porous netty ceramic reinforced steel and iron base composite lining plate

A composite liner and mesh technology, which is applied in the field of preparation of porous mesh ceramic reinforced steel-based composite liner, can solve the problems of low strength and hardness, large friction and wear, poor friction resistance, etc., and achieve good wettability , high stability, uniform dispersion effect

Active Publication Date: 2019-02-12
XI AN JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are disadvantages such as poor friction resistance, large amount of friction and wear, low strength and hardness, and short service life.

Method used

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  • Preparation method of porous netty ceramic reinforced steel and iron base composite lining plate

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preparation example Construction

[0028] A method for preparing a porous mesh ceramic reinforced steel-based composite liner of the present invention comprises the following steps:

[0029] S1, the TiB 2 +Ti(C,N) powder and additives are added to deionized water and fully stirred to obtain a ceramic slurry suspension;

[0030] Additives include ferrochromium powder, ammonium citrate, carboxymethylcellulose and silica sol; T TiB 2 +Ti(C,N) powder accounts for 70-85% of the total mass of the ceramic slurry, additives account for 5-20% of the total mass of the ceramic slurry, deionized water accounts for 10-25%; ferrochrome powder accounts for 65% of the additive mass ~85%, ammonium citrate accounts for 3-8% of the additive mass, carboxymethyl cellulose accounts for 4-8% of the additive mass, and silica sol accounts for 8-25% of the additive mass.

[0031] S2. Select an organic foam with a suitable pore size, dip it in the ceramic slurry suspension, take it out after 1-5 minutes and squeeze out the excess slurr...

Embodiment 1

[0039] see figure 1 , the preparation method of the ball mill liner is as follows:

[0040] 1) First, 99.4g TiB 2 +Ti(C,N) powder, 42.6g ferrochrome powder, 1.42g ammonium citrate and 0.71g carboxymethyl cellulose were added to 32mL deionized water and 8mL silica sol was added, and the ceramic slurry suspension was obtained by fully stirring;

[0041] 2) Secondly, select 5PPI soft polyurethane foam, dip it in the ceramic slurry, take it out after 2 minutes and squeeze out the excess slurry;

[0042] 3) After drying the impregnated organic foam, raise the temperature from room temperature to 600°C at a rate of 1°C / min in a vacuum furnace and keep it warm for 50 minutes, then raise the temperature to 1000°C at a rate of 10°C / min, and then Sinter at 1550°C for 1 hour at a heating rate of 5°C / min, and cool down with the furnace to obtain a porous mesh preform;

[0043] 4) Fix the prefabricated body on the end surface or the working surface of the mold, pour the metal liquid of ...

Embodiment 2

[0044] Example 2: Roller Mill Liner

[0045] 1) First, put 84g TiB 2 +Ti(C,N) powder, 36g of ferrochrome powder, 1.42g of ammonium citrate and 0.71g of carboxymethyl cellulose were added to 32mL of deionized water and 8mL of silica sol were added, fully stirred to obtain a ceramic slurry suspension;

[0046] 2) Secondly, select 15PPI soft polyurethane foam, dip it in the ceramic slurry, take it out after 3 minutes and squeeze out the excess slurry;

[0047] 3) After drying the impregnated organic foam, raise the temperature from room temperature to 650°C at a rate of 2°C / min in a vacuum furnace and keep it warm for 60 minutes, then raise the temperature to 1200°C at a rate of 8°C / min, and then Sinter at 1550°C for 3 hours at a heating rate of 2°C / min, and cool down with the furnace to obtain a porous mesh preform;

[0048] 4) Fix the prefabricated body on the end surface or the working surface of the mold, pour the metal liquid of the steel matrix material by casting infiltr...

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Abstract

The invention discloses a preparation method of a porous netty ceramic reinforced steel and iron base composite lining plate. After mixing of TiB2+Ti(C, N) powder and additives, de-ionized water is added for fully stirring to prepare ceramic pulp suspension; organic foam bodies are dipped in ceramic pulp; then, the dipped organic foam bodies are dried; porous netty TiB2+Ti(C, N) precast bodies areobtained after high-temperature sintering; finally, steel and iron matrix material metal liquid is cast in the prepared porous netty TiB2+Ti(C, N) precast bodies by adopting a casting permeation process; and the porous netty ceramic reinforced steel and iron base composite lining plate is obtained after cooling and demolding. The friction coefficient of the composite lining plate prepared throughthe method is improved; reinforcement phases are uniformly distributed in a basal body; the strength and the toughness are improved; and the service life is prolonged.

Description

technical field [0001] The invention belongs to the technical field of preparation of wear-resistant materials, and in particular relates to a method for preparing a porous mesh ceramic reinforced steel-based composite liner. Background technique [0002] The cylinder liner of the ball mill is used to protect the cylinder from the direct impact and friction of the grinding body and the material. At the same time, it also affects the movement of the grinding body. Different forms of liners can be used to adjust the movement of the grinding body. , to enhance the crushing effect of the grinding body on the material, which helps to improve the grinding efficiency of the ball mill, increase the output, and reduce the metal consumption. porous network TiB 2 The ceramic-reinforced steel-based composite liner is a new type of material with impact resistance and high wear resistance that is cast by metallurgical melting of wear-resistant materials. [0003] Existing composite lini...

Claims

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Application Information

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IPC IPC(8): B22D23/04B22D19/02B22F3/11C22C29/02
CPCB22D19/02B22D23/04B22F3/114C22C29/005C22C29/02
Inventor 李烨飞陈志郑巧玲陈璐王娟郑开宏高义民
Owner XI AN JIAOTONG UNIV
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