Processing net forming integrated method for amorphous alloy workpiece

A technology of amorphous alloy and amorphous master alloy, which is applied in the field of preparation of amorphous alloy workpieces, can solve problems such as the difficulty in realizing precise and complex amorphous alloy workpieces, the poor machinability of amorphous alloy materials, and the inability to apply amorphous alloys. Achieve the effect of saving manpower, material resources and time, reducing procedures, and promoting the application

Inactive Publication Date: 2008-04-23
BEIHANG UNIV
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Problems solved by technology

[0004] Due to the use of processing and shaping metal molds as the molds prepared by amorphous alloys, it is inevitable that many molds with complex shapes cannot be processed or manufactured; in addition, the machinability of amorphous alloy materials is poor, which makes it difficult to obtain precision and complexity. The idea of ​​amorphous alloy workpieces is becoming more and more difficult to realize
Although other preparation methods such as high-pressure casting, suction casting, powder compaction, etc. are used to increase or improve the casting performance of amorphous alloys, it is still impossible to fundamentally get rid of the bottleneck that metal shaping molds cannot obtain complex-shaped workpieces, so that Amorphous alloys will be applied in a broader production practice

Method used

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  • Processing net forming integrated method for amorphous alloy workpiece

Examples

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Effect test

Embodiment 1

[0022] The lanthanum-based alloy is evenly melted in a vacuum electric arc furnace, coarsely crushed and put into a quartz tube, and the amorphous alloy jewelry is prepared by spray casting, and gypsum is used as a collapsible mold material. The specific steps are as follows:

[0023] 1) Put the lanthanum-based alloy into a quartz tube with a circular nozzle, put the quartz tube together with the master alloy in a vacuum high-frequency induction furnace, place the plaster mold at the injection position, and evacuate to 5×10 -3 Pa.

[0024] 2) After the vacuum reaches the required level, turn off the vacuum equipment and fill the furnace with argon as a melting protective gas, and close the gas charging device when the pressure in the furnace is close to 0.5 atmospheres.

[0025] 3) Turn on the high-frequency induction power supply. After the alloy is completely melted, keep it warm at 50-80°C higher than the melting temperature of the alloy for 2-5 minutes. Turn off the induct...

Embodiment 2

[0028] The difference from Example 1 is:

[0029] The zirconium-based master alloy is evenly smelted according to the method in Example 1, and the gypsum mold is pre-cooled with dry ice as a coolant before being placed in the high-frequency induction furnace. inside the furnace. The master alloy smelting and spray casting process is as in Example 1. After the alloy is poured into the gypsum mold, the gypsum mold is quickly taken out from the furnace and water quenched. Other cleaning procedures are as embodiment 1. The purpose of this embodiment is to increase the cooling rate of the alloy, which is beneficial to the preparation of large-volume amorphous alloy workpieces.

Embodiment 3

[0031] The difference from Example 2 is:

[0032] Preparation of amorphous alloy springs. Copper powder and shavings are used as mold molding materials, organic resin binders are used as molding material binders, and the mass ratio of copper powder and binder is 10:1. Zirconium-based alloy melting and casting, cooling process as in Example 2. After the casting process is over, the mold is soaked in the organic solvent acetone for 20 minutes, and then the soaked container is placed in an ultrasonic generator for ultrasonic cleaning until a complete amorphous alloy workpiece is taken out. Compared with the mold prepared by copper powder, the heat conduction speed is higher, which is beneficial to the formation of amorphous alloy and the preparation of larger size amorphous alloy.

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Abstract

The present invention relates to a preparation processing method of amorphous alloy workpiece. Said method includes the following steps: heating and melting alloy mother material, then pouring the molten alloy mother material into a breakable mould, after the molten alloy is cooled, an amorphous alloy can be obtained, after the mould is broken, cleaning the test sample so as to obtain the invented required workpiece.

Description

technical field [0001] The invention relates to a method for preparing an amorphous alloy workpiece, in particular to an integrated method for preparing and processing an amorphous alloy workpiece with net shape. Background technique [0002] Amorphous alloy (also known as metallic glass) is a general term for a class of metal alloys whose atomic arrangement has the characteristics of long-range disorder and short-range order structure, and has special physical and chemical properties. People have always hoped to use the good supercooled liquid fluidity, excellent surface rewriting and filling ability, and its quasi-continuous solidification characteristics of amorphous alloys to realize an integrated method for the preparation and processing of high-performance workpieces. This method embodies the characteristics of rapidity, energy saving and environmental protection pursued by modern manufacturing technology, and is considered to be a new technology that is conducive to s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D27/20C22F1/00
Inventor 张涛李岩李然逄淑杰马朝利
Owner BEIHANG UNIV
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