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Manufacturing method of high-frequency cladding steel bond hard alloy composite distributor chute lining plate

A technology of steel-bonded hard alloys and distributors, which is applied in the direction of manufacturing tools, furnaces, heat treatment equipment, etc., can solve the problems of poor high temperature resistance, impact resistance and corrosion resistance, low metallurgical bonding strength between the wear-resistant layer and the substrate, and problems with the working surface. Cracks and other problems, to achieve high temperature resistance, impact resistance and corrosion resistance, low cost, avoid the use of the effect

Active Publication Date: 2021-06-04
LAIWU VOCATIONAL & TECHNICAL COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem solved by the present invention is the existing method of improving the service life of the lining plate of the chute of the distributor of the ironmaking blast furnace and reducing the manufacturing cost, whether it is the development of a new lining material or the surface welding wear-resistant material, and the cemented carbide inlay technology. High cost, cracks on the working surface, low metallurgical bonding strength between the wear-resistant layer and the substrate, poor high temperature resistance, impact resistance and corrosion resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0033] The invention provides a method for manufacturing a high-frequency cladding steel-bonded cemented carbide composite distributor chute liner. The preparation method is as follows:

[0034] Step 1: The composition selection of the steel-bonded hard alloy of the composite distributor chute liner, its main components are titanium carbide 40-55%, chromium 3-6%, molybdenum 0.5-3%, vanadium 0.1- 0.5%, aluminum 0.3-3%, the balance is iron powder, powder particle size 200-400 mesh;

[0035] Step 2: Select the base material of the steel-bonded cemented carbide;

[0036] Step 3: Machining the selected steel-bonded hard alloy base material into the required trough-shaped lining plate prefabrication according to the chute lining plate of the ironmaking blast furnace distributor;

[0037] Step 4: Use powder metallurgy to select and manufacture heat-resistant and impact-resistant steel-bonded carbide powder according to the composition of the steel-bonded carbide in step 1, and clean...

Embodiment 1

[0053] A method for manufacturing a high-frequency cladding steel-bonded carbide composite distributor chute liner, characterized in that the preparation method is as follows:

[0054] Step 1: The composition of the steel-bonded hard alloy of the composite distributor chute liner is selected, and its main components are 40% titanium carbide, 3% chromium, 0.5% molybdenum, 0.1% vanadium, 0.3% aluminum, and the rest The amount is iron powder, the powder particle size is 200 mesh;

[0055] Step 2: Select the base material of the steel-bonded cemented carbide as the heat-resistant steel plate ZG35CrMoV at 900°C, and use sandblasting or ultrasonic cleaning to remove oil and rust, and eliminate impurities in the processing groove;

[0056] Step 3: Machining the selected steel-bonded hard alloy base material into the required trough-shaped lining prefabricated part according to the chute lining plate of the ironmaking blast furnace distributor, and the trough-shaped lining prefabricat...

Embodiment 2

[0067] A method for manufacturing a high-frequency cladding steel-bonded carbide composite distributor chute liner, characterized in that the preparation method is as follows:

[0068] Step 1: The composition selection of the steel-bonded hard alloy of the composite distributor chute liner, its main components are 55% titanium carbide, 6% chromium, 3% molybdenum, 0.5% vanadium, 3% aluminum, and the rest The amount is iron powder, the powder particle size is 400 mesh;

[0069] Step 2: Select the base material of the steel-bonded carbide as other heat-resistant steel plates at 1000°C, and use sandblasting or ultrasonic cleaning to remove oil and rust, and eliminate impurities in the processed grooves;

[0070] Step 3: Machining the selected steel-bonded hard alloy base material into the required trough-shaped lining prefabricated part according to the chute lining plate of the ironmaking blast furnace distributor, and the trough-shaped lining prefabricated part is provided with ...

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Abstract

An embodiment of the invention discloses a manufacturing method of a high-frequency cladding steel bond hard alloy composite distributor chute lining plate, and belongs to the technical field of preparation of distributor chute lining plates. A steel bond hard alloy in the high-frequency cladding steel bond hard alloy composite distributor chute lining plate is a combined material, steel is taken as a bonding phase, refractory metal carbide (mainly titanium carbide and tungsten carbide) is taken as a hard phase, and the steel and the refractory metal carbide are hot-pressed to the surface of the composite distributor chute lining plate by a powder metallurgy method and an antioxidant coating in cooperation with an oil press with a high-frequency heating device to obtain the combined material; the main performance of the steel bond hard alloy is between the main performance of the steel and the main performance of the hard alloy; the steel bond hard alloy has the characteristics and advantages of the steel and the hard alloy, so that the working face of the composite distributor chute lining plate is free of cracks, the metallurgical bonding strength of a wear-resisting layer and a base body is high, and the high-temperature-resisting, impact-resisting and corrosion-resisting effects are good; and compared with existing hard alloy brazing or infiltration welding, the manufacturing method has the advantages that the cost is low, use of tungsten-cobalt materials is avoided, and the manufacturing cost is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of preparation of distributor chute liners, in particular to a manufacturing method of high-frequency cladding steel-bonded hard alloy composite distributor chute liners. Background technique [0002] At present, the shape of the distributor chute lining plate of the ironmaking blast furnace is U-shaped groove, and the structure is that the thickness direction of the U-shaped groove lining plate is evenly covered with through holes, and the alloy nails are placed in the through holes to penetrate the U-shaped groove lining. Plate, the nail head direction of the nail and facing the outer side of the U-shaped groove. [0003] The distributor chute, as the most important material distribution equipment of the bellless top blast furnace, can drive the entire distribution chute to rotate 360° and tilt up and down by 35° through the distributor transmission motor and distributor linear oil cylinder. Since pellets...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F7/08B22F3/14B22F3/24C21D1/18C21D1/773C21D6/00C21D9/00C22C29/06C22C29/10C22C30/00C22C38/06C22C38/22C22C38/24C22C38/28C22C38/36C22F1/02C22F1/16
CPCB22F7/08B22F3/24B22F3/14C22C29/10C22C29/067C22C30/00C21D9/0068C22F1/002C22F1/16C22C38/36C22C38/28C22C38/22C22C38/24C22C38/06C21D1/18C21D1/773C21D6/002C22F1/02B22F2003/248B22F2003/247Y02P10/25
Inventor 张雷张子弦孙海身刘青解传娣杜皎
Owner LAIWU VOCATIONAL & TECHNICAL COLLEGE