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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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

There are disadvantages such as poor friction resistance, large amount

Method used

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

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Example Embodiment

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

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

[0030] Additives include ferrochromium powder, ammonium citrate, carboxymethyl cellulose and silica sol; T TiB 2 +Ti(C,N) powder accounts for 70-85% of the total mass of ceramic slurry, additives account for 5-20% of the total mass of ceramic slurry, deionized water accounts for 10-25%; ferrochrome powder accounts for 65% of the total mass of additives ~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, immerse it in the ceramic slurry suspension, take it out and extrude the excess slurry after 1 to 5 minutes;

[0032] ...

Example Embodiment

[0038] Example 1

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

[0040] 1) First, add 99.4g TiB 2 +Ti(C,N) powder, 42.6g ferrochromium powder, 1.42g ammonium citrate and 0.71g carboxymethyl cellulose were added to 32mL deionized water and 8mL silica sol was added. Stir thoroughly to obtain a ceramic slurry suspension;

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

[0042] 3) After the impregnated organic foam is dried, it is heated from room temperature to 600°C at a heating rate of 1°C / min and held for 50 minutes in a vacuum furnace, and then heated to 1000°C at a heating rate of 10°C / min. Raise the temperature rise rate of 5°C / min to 1550°C and sinter for 1 hour, and then cool down with the furnace to obtain a porous mesh preform;

[0043] 4) Fix the preform on the end face or working face of the casting mold, use the casting infiltration pr...

Example Embodiment

[0044] Example 2: Roller mill liner

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

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

[0047] 3) After the impregnated organic foam is dried, it is heated in a vacuum furnace from room temperature to 650°C at a heating rate of 2°C / min and kept for 60 minutes, and then heated to 1200°C at a heating rate of 8°C / min. Raise the heating rate of 2℃ / min to 1550℃ and sinter for 3 hours, and then cool down with the furnace to obtain the porous mesh preform;

[0048] 4) Fix the preform on the end face or working face of the casting mold, use the casting infiltration process to pour the metal liquid of the steel matrix material, and obtain t...

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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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