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A kind of al-ti-b-sr composite master alloy and its preparation method and application

A technology of al-ti-b-sr and master alloy, which is applied in the field of Al-Ti-B-Sr composite master alloy and its preparation, can solve the problem that the feeding process is not easy to control, etc., and achieve the easy control and utilization of the refined modification process High rate, good effect of refinement and metamorphism

Active Publication Date: 2019-11-19
广州有研焊接材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If industrial pure strontium is used as the raw material for adding Sr, the chemical properties of strontium are active, the yield of adding it to Al melt is low, and the feeding process is not easy to control

Method used

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  • A kind of al-ti-b-sr composite master alloy and its preparation method and application

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Effect test

Embodiment 1

[0039] An embodiment of the Al-Ti-B-Sr composite master alloy of the present invention, the preparation method of the Al-Ti-B-Sr composite master alloy described in this embodiment, the flow chart is as follows figure 1 , including the following steps:

[0040] 1) Ti powder (Ti99.0%, particle size 4 Raw materials (particle size4 1.23kg of raw material, mixed evenly with 0.53kg of Ti powder, pressed into a mass of 160.0g, a thickness of 8-12mm, and a density of 2.4-2.8g / cm 3 round cakes.

[0041] 2) Put a certain amount of industrial pure aluminum (Al99.7%) into the medium-frequency induction heating graphite crucible furnace to melt, put the round cake of 1) into the Al melt according to 17.5% of the mass of the aluminum melt, and quickly heat the melt When the temperature reaches 800°C, the reaction is all over after 3 to 5 minutes, and water slag is discharged from the upper layer of the melt.

[0042] 3) When the temperature of the melt is 800° C., a graphite tube is used...

Embodiment 2

[0055] An embodiment of the Al-Ti-B-Sr composite master alloy of the present invention, the preparation method of the Al-Ti-B-Sr composite master alloy described in this embodiment, the flow chart is as follows figure 1 , including the following steps:

[0056] 1) Ti powder (Ti99.0%, particle size 4 Raw materials (particle size3 round cakes.

[0057] 2) Put quantitative industrial pure aluminum (Al99.7%) into the medium-frequency induction heating graphite crucible furnace for melting, put the round cake of step 1) into the Al melt by 19.5% of the mass of the aluminum melt, and quickly melt the melt Heating to 850°C, after 3 to 5 minutes, the reaction is all over, and water slag is discharged from the upper layer of the melt.

[0058] 3) When the temperature of the melt is 850° C., a graphite tube is inserted into the melt to pass dry nitrogen gas to perform degassing and slag removal. When the temperature of the melt is 800°C, add the Al-10Sr alloy (wrapped with aluminum fo...

Embodiment 3

[0070] An embodiment of the Al-Ti-B-Sr composite master alloy of the present invention, the preparation method of the Al-Ti-B-Sr composite master alloy described in this embodiment, the flow chart is as follows figure 1 , including the following steps:

[0071] 1) Ti powder (Ti99.0%, particle size 4 Raw materials (particle size3 round cakes.

[0072] 2) Put quantitative industrial pure aluminum (Al99.7%) into the medium-frequency induction heating graphite crucible furnace for melting, put the round cake of step 1) into the Al melt by 18.0% of the mass of the aluminum melt, and quickly melt the melt Heating to 830°C, after 3 to 5 minutes, the reaction is all over, and water slag is discharged from the upper layer of the melt.

[0073] 3) When the temperature of the melt is 800°C, a graphite tube is inserted into the melt to pass through the dried nitrogen gas for degassing and slag removal. When the temperature of the melt is 800°C, add the Al-10Sr alloy (wrapped with alumin...

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Abstract

The invention discloses an Al-Ti-B-Sr composite intermediate alloy and a preparation method; the preparation method comprises: melting Al-5Ti-B alloy into alloy melt, holding the temperature of the alloy melt to 780-870 DEG C, and removing gas and slag; adding industrially pure strontium or Al-10Sr alloy into the alloy melt, stirring, removing gas, pouring the melt when H2 content is not greater than 2 mu L / g, and extruding to obtain a wire material. The Al-Ti-B-Sr composite intermediate alloy prepared herein the added elements, Ti, B and Sr, are utilized at high levels during use; alloy refinement and modification effect is good; the refinement and modification process is easy to control; the preparation method is simpler than existing processes of producing Al-Ti-B-Sr composite intermediate wire material; good energy conservation and emission reduction are achieved. In addition, the invention also discloses application of the Al-Ti-B-Sr composite intermediate alloy in the preparationof flake aluminum solder.

Description

technical field [0001] The invention relates to a composite master alloy, its preparation method and application, in particular to an Al-Ti-B-Sr composite master alloy and its preparation method and application. Background technique [0002] In the past ten years, China's "demographic dividend" has been gradually exhausted, and problems such as the continuous expansion of the employment gap have become increasingly prominent. Manufacturers attach great importance to intelligent manufacturing. Therefore, the common problem in today's kitchen utensils and small household -The welding of aluminum alloy or (and) aluminum-stainless steel realizes intelligent brazing. [0003] Flake aluminum brazing filler metal replaces the traditional powdery aluminum brazing filler metal and is used to braze the pure aluminum plate-stainless steel disc in the heating plate assembly of the electric kettle, completely solving the problem of dust pollution during the use of powdery aluminum brazin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/03C22C21/00
CPCC22C1/026C22C1/03C22C21/003
Inventor 余华钢蔡沛沛刘福平刘宏江蔡志红张碧波曾燕焦均志林业伟黄云帅
Owner 广州有研焊接材料科技有限公司
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