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Braze filler metal copper base alloy powder for diamond braze welding and its preparation method

A copper-based alloy, diamond technology, applied in welding equipment, metal processing equipment, welding/cutting media/materials, etc., can solve the problems of easy carbonization of diamond, affecting the quality of diamond tools, low brazing temperature, etc. Good self-sharpening and reasonable formula

Inactive Publication Date: 2003-04-23
胡仁良 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The lower the brazing temperature of diamond, the better, generally higher than 900°C, diamond is easy to carbonize, which affects the quality of diamond tools

Method used

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  • Braze filler metal copper base alloy powder for diamond braze welding and its preparation method
  • Braze filler metal copper base alloy powder for diamond braze welding and its preparation method
  • Braze filler metal copper base alloy powder for diamond braze welding and its preparation method

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Experimental program
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Embodiment 1

[0019] The formula of the present embodiment is by weight percentage, and its composition is:

[0020] Sn 20% Ni 20% Cr 2.5% Si 0.5% B 3%

[0021] The balance is Cu.

[0022] The preparation method of the alloy powder of the present embodiment is: 1), take the batching by any one proportioning of claim 1-6,

[0023] 2) Under the protection of copper alloy smelting covering agent, melt the mixed ingredients in an intermediate frequency induction furnace at a temperature of 1000-1300°C. The copper alloy smelting covering agent is Hongguang brand produced by Shanghai Hongguang Metal Smelting Factory HGCJ-4 Copper Refining Covering Agent,

[0024] 3) Transfer the melted mixed ingredients to the tundish, use inert gas as the atomizing gas, and atomize the above-mentioned melted mixed ingredients at 900-1000°C through the atomizing nozzle, and form powder in the atomizing cylinder. The pressure of melting is 0.8mPa. The atomizing gas was nitrogen. The particle size of the prepa...

Embodiment 2

[0029] The formula of the present embodiment is by weight percentage, and its composition is:

[0030] Sn 20% Ni 15% Cr 2% Si 0.5% B 2%

[0031] The balance is Cu.

[0032] Preparation method is the same as embodiment 1

[0033] attached image 3 It is the melting point measurement curve of the alloy powder. The testing instrument is the DTA1700 high temperature differential calorimeter of the American PE company, and the measuring unit is the Analysis and Testing Center of Zhejiang University. The figure shows that the melting point of the alloy powder of this embodiment is between 760-810°C.

Embodiment 3

[0035] The formula of the present embodiment is by weight percentage, and its composition is:

[0036] Sn 23.5% Ni 10% Cr 2% Si 0.5%

[0037] B 1.5% The balance is Cu.

[0038] Preparation method is the same as embodiment 1

[0039] attached Figure 4 It is the melting point measurement curve of the alloy powder. The testing instrument is the DTA1700 high temperature differential calorimeter of the American PE company, and the measuring unit is the Analysis and Testing Center of Zhejiang University. The figure shows that the melting point of the alloy powder of this embodiment is between 760-810°C.

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Abstract

The composition of brazing filler metal copper base alloy powder for diamond brazing is formed from (wt%) Sn 16-24%, Ni 7-27%, Cr 1.5-5%, Si 0-3%, B 1-5% and the rest is Cu. Its melting point is 780-840 deg.C, is said range, when brazing the diamond can not be charred or damaged, it possesses good resistance to oxidation and strong imbibition property, is favorable for implementing brazing process and cohesive property of diamond granules.

Description

technical field [0001] The invention relates to a brazing material copper-based alloy powder for diamond brazing and a preparation method thereof. Background technique [0002] Copper-based alloy powder for diamond brazing is used for diamond brazing to make it a diamond tool. At present, the solder alloy powder for diamond brazing generally has the defect of high welding temperature, such as B Ni 2 The welding temperature of the alloy is 1030°C, B Ni 7 The soldering temperature is 920°C. The lower the brazing temperature of diamond, the better, generally higher than 900°C, diamond is easy to carbonize, which affects the quality of diamond tools. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a brazing filler metal copper-based alloy powder for diamond brazing with relatively low welding temperature. [0004] Another technical problem to be solved by the present inv...

Claims

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Application Information

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IPC IPC(8): B22F9/08B23K35/28B23K35/40B23P5/00C22C1/02C22C9/00
Inventor 胡仁良周亚伟
Owner 胡仁良
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