A kind of steel-bonded hard alloy and its preparation method and application

A technology of steel-bonded hard alloy and mass percentage content, 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 properties The effect of high stability and excellent thermal stability

Active Publication Date: 2022-06-14
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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  • A kind of steel-bonded hard alloy and its preparation method and application

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Experimental program
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Effect test

Embodiment 1

[0028] A steel-bonded cemented carbide, calculated by mass percentage, including each component with a mesh number of 60 to 100, specifically 35% titanium carbide, 40% reduced iron powder, 5% reduced molybdenum powder, and 3 reduced nickel powder. %, manganese powder 12%, chromium powder 2%, ferrovanadium powder 2%, ferroniobium powder 1%.

[0029] The preparation method is:

[0030] (1) Wet grinding: Weigh 150kg of titanium carbide, reduced iron powder, reduced molybdenum powder, reduced nickel powder, manganese powder, chromium powder, ferrovanadium powder and ferroniobium powder in a ball mill, and then add 120kg of anhydrous ethanol As a wet grinding agent, wet grinding in a ball mill for 20h;

[0031] (2) Press molding: discharge the wet grinding material from the ball mill, then dry the wet grinding agent, add a molding agent whose mass ratio is 1 / 5, and mix and stir evenly. The molding agent is nitrile rubber. Gasoline solution, in which the mass fraction of nitrile r...

Embodiment 2

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

[0035] Its preparation method is:

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

[0037] (2) Press molding: discharge the wet grinding material from the ball mill, then dry the wet grinding agent, add a molding agent whose mass ratio is 1 / 6, and mix and stir evenly. The molding agent is nitrile rubber. Gasoline solution, in which the mass fraction of nitril...

Embodiment 3

[0040] A steel-bonded cemented carbide, calculated by mass percentage, including each component with a mesh number of 150 to 200, specifically titanium carbide 40%, reduced iron powder 40%, reduced molybdenum powder 2%, reduced nickel powder 3% %, manganese powder 10%, chromium powder 1%, ferrovanadium powder 2%, ferroniobium powder 2%.

[0041] Its preparation method is:

[0042] (1) Wet grinding: Weigh 150kg of titanium carbide, reduced iron powder, reduced molybdenum powder, reduced nickel powder, manganese powder, chromium powder, ferrovanadium powder and ferroniobium powder in a ball mill, and then add 120kg of anhydrous ethanol As a wet grinding agent, wet grinding in a ball mill for 18h;

[0043] (2) Press molding: discharge the wet-milled material from the ball mill, then dry and remove the wet-grinding agent, add a molding agent with a mass ratio of 1 / 10, and mix and stir evenly. The molding agent is nitrile rubber. Gasoline solution, in which the mass fraction of n...

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Abstract

The invention discloses a steel-bonded hard alloy and its preparation method and application. The steel-bonded hard alloy comprises the following components in mass percentage: 35-45% of titanium carbide, 40-50% of reduced iron powder, Reduced molybdenum powder 2-5%, reduced nickel powder 2-5%, manganese powder 10-15% and chromium powder 0-3%. The invention discloses a steel-bonded hard alloy and its preparation method and application, through the selection and proportioning design of the hard phase and the binding phase, as well as the proportioning design of the adhesive component, and through a reasonable preparation process, the prepared The obtained steel-bonded cemented carbide has good impact resistance and wear resistance, and also has excellent thermal stability. After water toughening treatment, there is no cracking phenomenon, and the stability of mechanical properties is high. It is suitable for casting roller sleeves of integrated roller presses. or roll-hide liners.

Description

technical field [0001] The invention relates to the technical field of alloy preparation, in particular to a steel-bonded cemented carbide and a preparation method and application thereof. Background technique [0002] The development of roller sleeves for roller presses has experienced surfacing rollers, centrifugal composite rollers, tungsten carbide stud rollers and cast nail rollers. At present, surfacing rolls, stud rolls and inlaid stud rolls are widely used on the market, but inlaid stud rolls are gradually replacing surfacing rolls and stud rolls. [0003] The inlaid casting nail roller adopts forging the parent body (roller sleeve) first, then carries out numerical control opening 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 cemented carbide nails to loosen or even fall off, reducing the service life. [0004] Chinese patent CN 207722863 ...

Claims

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Application Information

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Patent Type & Authority Patents(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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