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Atomized alloyed powder substituting cobalt and nickel in diamond tools

A diamond tool and alloy powder technology, which is applied in the field of powder alloys, can solve problems such as reduction, high price, and scarce resources, and achieve the effect of reducing manufacturing costs

Inactive Publication Date: 2008-05-21
上海芬迪超硬材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the scarcity and high price of original diamond tool binder resources at home and abroad, the present invention provides an atomized alloy powder as a diamond tool binder. This alloy powder keeps diamond tools as excellent as high cobalt and nickel elements. Comprehensive performance at the same time, the cost is greatly reduced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Add 20kg of industrial pure iron, 1kg of ferromolybdenum, 4kg of nickel, and 3.5kg of cobalt into the medium-frequency induction furnace. When the metal is about to melt, add 15kg of electrolytic copper. When the alloy starts to melt, add slagging agent to cover the liquid surface, and then add 7.5kg Tin block, after the alloying is completed, add 0.25kg ferrosilicon rare earth, finally, start the high-pressure water pump, fill nitrogen into the atomization barrel, adjust the atomization pressure to 37.5MPa, pour the alloy liquid into the middle leak bag for atomization. The alloy powder collected by the collector is dehydrated and put into a vacuum dryer for drying. Then sieve with a 250-mesh sieve to obtain -250-mesh alloy powder. Finally, put the alloy powder into the reduction boat, pass through the hydrogen decomposed by ammonia in the reduction furnace at 650°C for 40 minutes for reduction, and then obtain atomized alloy powder with an oxygen content of less than ...

Embodiment 2

[0024] Add 14kg of industrial pure iron, 6kg of electrolytic nickel, 5kg of electrolytic cobalt and 1kg of ferromolybdenum into an intermediate frequency induction furnace for melting, add 20kg of electrolytic copper when the raw materials are nearly melted, cover the surface with slagging agent when the alloy starts to melt, and then add 4.5kg Tin block, add 0.25kg copper-titanium alloy and ferrosilicon rare earth after alloying is completed. Finally, start the high-pressure water pump, fill the atomization barrel with nitrogen, adjust the atomization pressure to 38Mpa, pour out the molten alloy liquid into the middle leak bag for atomization. The alloy powder collected by the collector is dehydrated and put into a vacuum dryer for drying. Then sieve with a 250-mesh sieve to obtain -250-mesh alloy powder. Finally, put the alloy powder into the reduction boat, pass through the hydrogen decomposed by ammonia in the reduction furnace at 650°C for 40 minutes for reduction, and t...

Embodiment 3

[0026] Put 33kg of industrial pure iron, 3kg of electrolytic nickel, and 2.5kg of electrolytic cobalt into an intermediate frequency induction furnace for melting, add 10kg of electrolytic copper when the raw materials are about to melt, cover the surface with a slagging agent when the alloy starts to melt, and then add 2kg of tin block, Add 0.25kg of copper-titanium alloy and ferrosilicon rare earth after alloying is completed. Finally, start the high-pressure water pump, fill the atomizing barrel with nitrogen, adjust the atomizing pressure to 40MPa, pour out the molten alloy liquid into the middle leak bag for atomization. The alloy powder collected by the collector is dehydrated and put into a vacuum dryer for drying. Then sieve with a 250-mesh sieve to obtain -250-mesh alloy powder. Finally, the alloy powder is loaded into a reduction boat, and the hydrogen gas decomposed by ammonia is introduced into the reduction furnace at 650° C. for 40 minutes to obtain an atomized ...

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Abstract

The invention discloses an alloy powder manufactured by high pressure water atomization, and the compositions (weight percentage) of the alloy powder are: 0 to 60 percent of copper, 20 to 50 percent of iron, 5 to 20 percent of nickel, 0 to 15 percent of cobalt, 0 to 15 percent of tin, 0 to 5 percent of molybdenum, 0 to 5 percent of titanium, 0 to 5 percent of rare earth elements, 0 to 5 percent of aluminum, and 0 to 5 percent of silicon. Materials are high temperature molten and alloyed according to a certain proportion and are atomized by high-pressure water; the obtained alloy powder is dried, reduced by hydrogen, finally the atomized alloy powder is prepared. The alloy powder can be taken as a bonding agent for producing diamond tools and replace the originally used cobalt powder and nickel powder; the alloy powder can achieve performances no less than the original cobalt or nickel composition bonding agents, and greatly reduce the manufacturing cost of diamond tools.

Description

technical field [0001] The invention relates to the field of powder alloys, in particular to an atomized alloy powder that replaces independent components of cobalt and nickel materials in a bond of a diamond tool. Background technique [0002] As we all know, cobalt is a metal with good comprehensive performance in diamond tool bonds, but cobalt is very expensive, and cobalt resources in my country are very scarce. Nickel is also a precious metal second only to cobalt in diamond tool bonds. Expensive and scarce resources, there is an urgent need for an alternative product, which can maintain the original properties (mechanical properties and cutting properties) of the binder, while the raw materials of the product are readily available and the cost is reduced. Contents of the invention [0003] In view of the scarcity and high price of original diamond tool binder resources at home and abroad, the present invention provides an atomized alloy powder as a diamond tool binder...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00B22F9/08B22F9/22
Inventor 方向威
Owner 上海芬迪超硬材料科技有限公司
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