Alloy powder for mining exploration and collection tool, and preparation method of alloy powder

A technology of alloy powder and collection tools, which is applied in the field of powder metallurgy, can solve the problems of insufficient wettability, poor mechanical properties, and uneven composition of superhard materials, and achieve the effects of concentrated particle size, improved mechanical properties, and uniform composition

Inactive Publication Date: 2018-10-12
陕西铂锐钻探机具有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The embodiments of the present invention provide an alloy powder for mining exploration and collection tools and a preparation method thereof, so as to solve the defects of the alloy powder for mining exploration and collection tools in the prior art, such as uneven composition, many impurities, and large particle size, which cause the alloy powder to be sintered during sintering. Insufficient wettability of superhard materials, small inlay strength, poor mechanical properties, etc.

Method used

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  • Alloy powder for mining exploration and collection tool, and preparation method of alloy powder
  • Alloy powder for mining exploration and collection tool, and preparation method of alloy powder
  • Alloy powder for mining exploration and collection tool, and preparation method of alloy powder

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preparation example Construction

[0033] An embodiment of the present invention provides a method for preparing alloy powder for mining exploration and collection tools. The preparation method can be completed by using an intermediate frequency induction furnace. The intermediate frequency induction furnace mainly includes a melting chamber, an atomization chamber and a reduction furnace. refer to figure 1 As shown, the method includes the following steps:

[0034] S1. Melting Fe and Cu in the raw material under the protection of an inert gas, heating to a predetermined heating temperature and holding it for a certain period of time, then adding Sn in the raw material and stirring to obtain an alloy melt.

[0035] In this embodiment, in terms of mass percentage, the raw materials include 68-86% Fe, 13-25% Cu, 1-7% Sn and unavoidable impurities, which are generally C, P or O, etc. non-metallic elements.

[0036] This component contains Cu and Fe elements, among which Cu can be used as a good thermal conductiv...

Embodiment 1

[0073] According to the mass ratio, weigh 25% of high-purity copper ingots, 7% of high-purity tin ingots and the balance of high-purity iron ingots, then put the high-purity iron ingots and high-purity copper ingots into the melting chamber of the intermediate frequency induction furnace, and then place the melting chamber Evacuate the spray chamber and the spray chamber to a vacuum degree of 20 Pa, and fill it with high-purity argon gas with a purity of 99.9% until the pressure in the melting chamber and spray chamber reaches 1 atmosphere.

[0074] Start the medium frequency induction furnace to raise the temperature of the smelting chamber to 1430°C, with a heating rate of 30°C / min below 1000°C and 10°C / min above 1000°C, and then keep warm for 40 minutes. Then, the high-purity tin ingot is added by a trace element feeding device, and the alloy melt is stirred for 30 minutes by a stirring device. During the stirring process, a slag removal device is used to remove a layer of ...

Embodiment 2

[0079] According to the mass ratio, weigh 19% high-purity copper ingots, 4% high-purity tin ingots and the balance of high-purity iron ingots, then put the high-purity iron ingots and high-purity copper ingots into the melting chamber of the intermediate frequency induction furnace, and then put the melting chamber Evacuate the spray chamber and the spray chamber to a vacuum degree of 20 Pa, and fill it with high-purity argon gas with a purity of 99.9% until the pressure in the melting chamber and spray chamber reaches 1 atmosphere.

[0080] Start the medium-frequency induction furnace to raise the temperature of the melting chamber to 1450°C, with a heating rate of 30°C / min below 1000°C and 10°C / min above 1000°C, and then keep warm for 35 minutes. Then, the high-purity tin ingot is added by a trace element feeding device, and the alloy melt is stirred for 30 minutes by a stirring device. During the stirring process, a slag removal device is used to remove a layer of melt on t...

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Abstract

The invention provides alloy powder for a mining exploration and collection tool, and a preparation method of the alloy powder. The alloy powder comprises the following components of, by mass percentage, 68-86% of Fe, 13-25% of Cu, 1-7% of Sn, and the balance unavoidable impurities. The preparation method of the alloy powder comprises the following steps that the Fe and Cu in a raw material are smelted under inert gas shielding and are heated to scheduled heating temperature, heat preservation is carried out within a certain period of time, then the Sn in the raw material is added, stirring iscarried out, and an alloy molten mass is obtained; the alloy molten mass is poured, the falling alloy molten mass is crushed by a high-pressure water flow under the inert gas shielding, and atomizedpowder is obtained after cooling; and the atomized powder is sequentially subjected to reduction, drying and pulverizing operation, and the alloy powder is obtained. The categories of metal elements contained in the alloy powder prepared by the preparation method are less, the proportion is easy to control, the property is stable, components and structures of the alloy powder are more uniform, impurities are less, and the particle diameter is less, so that the material property of the alloy powder is more stable.

Description

technical field [0001] The invention relates to the technical field of powder metallurgy, in particular to an alloy powder for mining exploration and collection tools and a preparation method thereof. Background technique [0002] Mining exploration and collection tools used in superhard equipment in the fields of mining and exploration are tools with certain shape, performance and purpose made of diamond as cutting or drilling material and with the help of alloy powder. Most of them use mixed Metal powder or pre-alloyed powder is used as a binder, which is mixed with diamond particles and produced by hot pressing and sintering. [0003] At present, most of the alloy powders used in mining exploration and collection tools are ultra-fine Fe-Cu alloy powders, but the quality of iron powder, one of the main raw materials, is difficult to control, and it is easy to introduce impurities such as oxygen during the preparation process. The particle size is also difficult to control...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00B22F9/08C22C38/16
CPCB22F1/0003C22C38/008C22C38/16B22F9/082B22F2009/0828B22F1/14
Inventor 逯峙邱敬文王辉贾明灿
Owner 陕西铂锐钻探机具有限公司
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