Sea water corrosion resistant hard alloy and preparation method thereof

A cemented carbide and seawater-resistant technology, which is applied in the field of alloy manufacturing, can solve the problems of low hardness and wear resistance, high production cost, and low cost performance, and achieve the effect of low porosity, high cost performance, and improved hardness

Inactive Publication Date: 2012-04-04
四川科力特硬质合金股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention aims to solve the technical problems of existing nickel-based seawater corrosion-resistant alloys such as low hardness and wear resistance, high production cost, and low cost performance, so as to provide an alloy with high hardness and wear resistance and excellent corrosion resistance. A seawater corrosion-resistant cemented carbide with the advantages of low production cost and high cost performance and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Get the components by weight percentage: Ni powder 7.3%, Cr3C2 powder 0.6%, Mo powder 0.7%, and the balance is WC powder, Ni powder, Cr3C2 powder, Mo powder and WC powder are added in the tilting ball mill, The speed of the ball mill is 240r / min, the alloy balls used for ball milling are WC-6wt%Ni-based cemented carbide balls with a diameter of about 10mm, the ball-material ratio is 4:1, the ball milling time is 42h, the solvent used for wet milling is absolute ethanol, wet Grind to a powder particle size of 1 μm to obtain a mixed slurry.

[0031] Afterwards, filter and dry the above-mentioned mixed slurry, add SD rubber solution of 0.8% of the total mass of raw materials, mix evenly, vacuum-dry at 90°C for 15 minutes, pass through a 80-mesh sieve to obtain the mixture, and put the mixture into a mold at 25 It is pressed under the pressure of tons (T), and then placed in a vacuum of 5 Pa and a temperature of 1410 ° C for 1 hour to obtain a finished product.

[0032] Du...

Embodiment 2

[0035] Get the components by weight percentage: Ni powder 7.3%, Cr3C2 powder 1.0%, Mo powder 0.3%, and the balance is WC powder, Ni powder, Cr3C2 powder, Mo powder and WC powder are added in the tilting ball mill, The speed of the ball mill is 240r / min, the alloy balls used for ball milling are WC-6wt%Ni-based cemented carbide balls with a diameter of about 10mm, the ball-material ratio is 4:1, the ball milling time is 42h, the solvent used for wet milling is absolute ethanol, wet Grind to a powder particle size of 2 μm to obtain a mixed slurry.

[0036] Afterwards, filter and dry the above-mentioned mixed slurry, add SD rubber solution of 1.0% of the total mass of raw materials, mix evenly, vacuum dry at 110°C for 25 minutes, pass through a 80-mesh sieve to obtain the mixture, and put the mixture into a mold at 63°C Compression molding under pressure, and then placed in a vacuum of 20Pa, the temperature is 1475 ° C under the conditions of heat preservation for 1.5 hours to ob...

Embodiment 3

[0040] Get the components by weight percentage: Ni powder 7.5%, Cr3C2 powder 0.8%, Mo powder 0.6%, and the balance is WC powder, Ni powder, Cr3C2 powder, Mo powder and WC powder are added in the tilting ball mill, The speed of the ball mill is 240r / min, the alloy balls used for ball milling are WC-6wt%Ni-based cemented carbide balls with a diameter of about 10mm, the ball-material ratio is 4:1, the ball milling time is 42h, the solvent used for wet milling is absolute ethanol, wet Grind to a powder particle size of 1.5 μm to obtain a mixed slurry.

[0041] Afterwards, filter and dry the above-mentioned mixed slurry, add SD rubber solution with 0.9% of the total mass of raw materials, mix evenly, vacuum-dry at 100°C for 20 minutes, pass through a 80-mesh sieve to obtain the mixture, and put the mixture into a mold at 50T It is pressed and formed under pressure, and then placed in a vacuum of 10 Pa and a temperature of 1460° C. for 2 hours to obtain a finished product.

[0042]...

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Abstract

The invention discloses a sea water corrosion resistant hard alloy and a preparation method thereof, and relates to the technical field of alloy manufacturing. A purpose of the present invention is to solve the technical problems of not high hardness, not high wear resistance, high production cost, low performance-price ratio and the like of the nickel-based sea water corrosion resistant alloy in the prior art. The sea water corrosion resistant hard alloy of the present invention comprises the following components, by weight, 7.3-7.7% of Ni, 0.6-1.0% of Cr3C2, 0.3-0.7% of Mo, and the balance of WC powder.

Description

technical field [0001] The invention relates to the technical field of alloy manufacture, in particular to a tungsten carbide-based seawater corrosion-resistant cemented carbide with nickel as a binding phase and a preparation method thereof. [0002] Background technique [0003] Structural metals and alloys commonly used in marine operations are eroded by seawater or marine atmosphere. For example, ship shells, propellers, various metal structures in seaports, offshore oil production platforms and oil pipelines will be severely corroded by seawater. With the acceleration of deep-sea research and underwater operations, research on seawater corrosion-resistant materials has progressed rapidly, and nickel-based alloys are an important seawater corrosion-resistant material. [0004] Since seawater is a corrosive electrolyte solution with high salinity, electrical conductivity, and biological activity, common cobalt-based alloys cannot be used in this environment. Nickel-base...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C29/08C22C1/05
Inventor 苏华杨剑忠谷亩张晓艳
Owner 四川科力特硬质合金股份有限公司
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