Composite material for refractory brick mold and preparation method thereof

A composite material, refractory brick technology, applied in chemical instruments and methods, layered products, metal layered products, etc., can solve problems such as limited, achieve good application prospects, improve wear resistance, and improve the effect of hardness

Inactive Publication Date: 2011-09-07
JIAXING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to reduce the wear and tear of the mold and improve the service life of the mold, the surface treatment methods such as carburizing and boroniz...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] After smelting and forging, the vanadium-containing 3.5wt% iron-vanadium alloy steel is finally rolled into a plate with a thickness of 5.0mm, and then the surface is ground to remove the oxide layer.

[0026] Grind one surface of a Q235 steel plate with a thickness of 100mm to remove the oxide layer.

[0027] Cover the iron-vanadium alloy steel plate with the oxide layer removed on the Q235 steel plate with the oxide layer removed, and pay attention to make the two non-oxidized surfaces contact each other, and the surroundings are completely welded. Then heat it in a resistance furnace, the heating temperature is 1100°C, and keep it warm for 50 minutes, and then carry out rolling, and the rolling reduction is 25mm.

[0028] The rolled plate is placed in a gas carburizing furnace, carburized at 920°C for 4 hours, the carburizing carburization potential is 1.15% carbon, and then rapidly air-cooled carburizing composite material.

[0029] The carburized composite materia...

Embodiment 2

[0031] The vanadium-containing 3.64wt% iron-vanadium alloy steel is smelted and forged, finally rolled into a plate with a thickness of 5.0mm, and then the surface is ground to remove the oxide layer.

[0032] Grind one surface of a Q235 steel plate with a thickness of 100mm to remove the oxide layer.

[0033] Cover the iron-vanadium alloy steel plate with the oxide layer removed on the Q235 steel plate with the oxide layer removed, and pay attention to make the two non-oxidized surfaces contact each other, and the surroundings are completely welded. Then heat it in a resistance furnace, the heating temperature is 1106°C, and keep it warm for 50 minutes, and then roll it, and the rolling reduction is 25mm.

[0034] Place the rolled plate in a gas carburizing furnace, carburize at 920°C for 4 hours, the carburizing carburizing potential is 1.12% carbon, and then rapidly air-cool the carburizing composite material.

[0035] The carburized composite material is first quenched in...

Embodiment 3

[0037] The vanadium-containing 3.57wt% iron-vanadium alloy steel is smelted and forged, and finally rolled into a plate with a thickness of 5.0mm, and then the surface is ground to remove the oxide layer.

[0038] Grind one surface of a Q235 steel plate with a thickness of 100mm to remove the oxide layer.

[0039] Cover the iron-vanadium alloy steel plate with the oxide layer removed on the Q235 steel plate with the oxide layer removed, and pay attention to make the two non-oxidized surfaces contact each other, and the surroundings are completely welded. Then heat it in a resistance furnace, the heating temperature is 1117 ° C, and keep it warm for 50 minutes, and then roll it, and the rolling reduction is 25mm.

[0040] The rolled plate is placed in a gas carburizing furnace, carburized at 920°C for 4 hours, the carburizing carburizing potential is 1.10% carbon, and then rapidly air-cooled carburizing composite material.

[0041] The carburized composite material is first qu...

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PUM

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Abstract

The invention discloses a composite material for a refractory brick mold. The composite material comprises ferrovanadium alloy steel and Q235 steel, wherein the ferrovanadium alloy steel is a coating and covers a matrix made of the Q235 steel. The preparation method comprises the following steps of: compounding Fe-V alloy with low vanadium content and the Q235 steel by adopting a hot rolling method; performing carburizing treatment on the composite material to improve the hardness and wear resistance of the coating; and performing quenching and tempering treatment on the composite material. Therefore, the Fe-V alloy coating of the composite material has the hardness of about HRC65 and high wear resistance. Repeated study and practice prove that: when the composite material is used for the refractory brick mold, the service life of the composite material is 2 times higher than that of steel (Q235 subjected to carburizing treatment) of the conventional refractory brick mold.

Description

technical field [0001] The invention relates to a composite material, in particular to a composite material made of alloy steel and Q235 steel, a preparation method of the composite material and an application in a refractory brick mould. Background technique [0002] Refractory bricks are used as high-temperature building materials and structural materials for building kilns and various thermal equipment, and require high dimensional accuracy. They must be produced with molds to ensure their dimensional accuracy. [0003] During the pressing process of refractory bricks, the mold is subjected to pressure and surface friction, and the pressure here is not too high. Therefore, in order to save the cost of the mold, Q235 steel is commonly used for refractory brick molds, which can meet the strength requirements of the core. However, the main components of refractory bricks are metal compounds and binders. The mold is prone to wear during repeated work, and wear is the main for...

Claims

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Application Information

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IPC IPC(8): B32B15/01B32B15/08
Inventor 王殿梁
Owner JIAXING UNIV
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