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Steel bonded carbide, and preparation method and application thereof

A technology of steel-bonded hard alloy and sintering molding, which is applied in the field of steel-bonded hard alloy and its preparation, can solve the problems of performance change and easy cracking, and achieve good impact resistance, wear resistance, and mechanical performance stability The effect of high and excellent thermal stability

Active Publication Date: 2021-02-02
常熟市电力耐磨合金铸造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main technical problem to be solved by the present invention is to provide a steel-bonded hard alloy and its preparation method and application, which can solve the problems of the cast nails of the existing cast nail casting rollers after heat treatment, their performance changes, and cracks are prone to occur.

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  • Steel bonded carbide, and preparation method and application thereof

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Effect test

Embodiment 1

[0028] A steel-bonded hard alloy, calculated by mass percentage, including various components with a mesh number of 60 to 100 mesh, specifically titanium carbide 35%, reduced iron powder 40%, reduced molybdenum powder 5%, reduced nickel powder 3% %, manganese powder 12%, chromium powder 2%, vanadium iron powder 2%, niobium iron powder 1%.

[0029] The preparation method is:

[0030] (1) Wet milling: Weigh 150kg of titanium carbide, reduced iron powder, reduced molybdenum powder, reduced nickel powder, manganese powder, chromium powder, vanadium iron powder and niobium iron powder in the ball mill, then add 120kg of absolute ethanol As a wet grinding agent, wet grind in a ball mill for 20 hours;

[0031] (2) Compression molding: discharge the wet-milled material from the ball mill, then dry the wet-milling agent, add a molding agent accounting for 1 / 5 of its mass ratio, blend and stir evenly, and the molding agent is nitrile rubber Gasoline solution, wherein the mass fraction...

Embodiment 2

[0034] A steel-bonded hard alloy, calculated by mass percentage, including components with a mesh number of 100 to 150 mesh, specifically titanium carbide 38%, reduced iron powder 42%, reduced molybdenum powder 5%, reduced nickel powder 1 %, manganese powder 10%, chromium powder 1%, vanadium iron powder 0%, niobium iron powder 3%.

[0035] Its preparation method is:

[0036] (1) Wet milling: Weigh 150kg of titanium carbide, reduced iron powder, reduced molybdenum powder, reduced nickel powder, manganese powder, chromium powder, vanadium iron powder and niobium iron powder in the ball mill, then add 120kg of absolute ethanol As a wet grinding agent, wet mill in a ball mill for 19 hours;

[0037] (2) Compression molding: discharge the wet-milled material from the ball mill, then dry the wet-milling agent, add a molding agent accounting for 1 / 6 of its mass ratio, blend and stir evenly, and the molding agent is nitrile rubber Gasoline solution, wherein the mass fraction of nitri...

Embodiment 3

[0040] A steel-bonded hard alloy, calculated by mass percentage, including various components with a mesh number of 150 to 200 mesh, specifically 40% titanium carbide, 40% reduced iron powder, 2% reduced molybdenum powder, and 3% reduced nickel powder %, manganese powder 10%, chromium powder 1%, vanadium iron powder 2%, niobium iron powder 2%.

[0041] Its preparation method is:

[0042] (1) Wet milling: Weigh 150kg of titanium carbide, reduced iron powder, reduced molybdenum powder, reduced nickel powder, manganese powder, chromium powder, vanadium iron powder and niobium iron powder in the ball mill, then add 120kg of absolute ethanol As a wet grinding agent, wet mill in a ball mill for 18 hours;

[0043] (2) Compression molding: discharge the wet-milled material from the ball mill, then dry the wet-milling agent, add a molding agent accounting for 1 / 10 of its mass ratio, blend and stir evenly, and the molding agent is nitrile rubber Gasoline solution, wherein the mass fra...

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Abstract

The invention discloses a steel bonded carbide, and a preparation method and application thereof. The steel bonded carbide comprises the following components by mass: 35%-45% of titanium carbide, 40%-50% of reduced iron powder, 2%-5% of reduced molybdenum powder, 2%-5% of reduced nickel powder, 10%-15% of manganese powder and 0-3% of chromium powder. According to the steel bonded carbide, and thepreparation method and application thereof, through selection and proportion design of a hard phase and a binding phase, proportion design of binding components and a reasonable preparation process, the prepared steel bond carbide has high impact resistance and abrasion resistance, and meanwhile has high thermal stability; after water toughening treatment, no cracking phenomenon exists, and the mechanical property stability is high; and the steel bonded carbide is suitable for casting a roller sleeve or a roller lining plate of an integrated roller press.

Description

technical field [0001] The invention relates to the technical field of alloy preparation, in particular to a steel-bonded hard alloy and its preparation method and application. Background technique [0002] The development of the roller sleeve of the roller press has gone through surfacing rollers, centrifugal composite rollers, tungsten carbide stud rollers and casting nail rollers. At present, surfacing rollers, stud rollers and inlaid nail casting rollers are widely used in the market, but inlaid nail casting rollers are gradually replacing surfacing rollers and stud rollers. [0003] The mosaic nail casting roller adopts forging the parent body (roller sleeve) first, and then carries out numerical control drilling on the parent body, and then fixes the tungsten carbide cemented carbide in the hole through glue. When the sleeve is heated during use, the glue will vaporize, causing the carbide nail to loosen or even fall off, reducing the service life. [0004] Chinese p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/58C22C38/44C22C38/48C22C38/46C22C30/00C22C32/00C22C33/02
CPCC22C38/58C22C38/44C22C38/48C22C38/46C22C30/00C22C32/0052C22C33/0292C22C33/0228B22F2998/10B22F2009/043B22F3/02B22F3/1007
Inventor 陈玉祥肖平安陈焕潘宇平
Owner 常熟市电力耐磨合金铸造有限公司
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