CN103555981A - Preparation method of tantalum 10 tungsten alloy - Google Patents

Abstract

The invention provides a preparation method of a tantalum 10 tungsten alloy. The preparation method comprises the following steps: after preparing tantalum powder and tungsten powder in proportion, filling the powder into a drum mixer to be fully mixed and screening the powder to obtain fine powder; pressing the fine powder into an alloy bar with a 500ton oil press; putting the alloy bar into a vacuum sintering furnace to be sintered to obtain a raw ingot blank; smelting the raw ingot blank at least twice with a vacuum electron beam furnace to prepare an alloy ingot blank; putting the alloy ingot blank into a high frequency furnace to be heated to 1400 DEG C, then taking out the alloy ingot blank and forging the alloy ingot blank for many times, thus obtaining a finished product of ingot blank. The preparation method has the beneficial effects that through full mixing of tantalum powder and tungsten powder and many times of smelting, the problem of nonuniformity of ingot blank tissues is solved and the problems that the blanks easily fall off and become brittle are improved.

Description

The preparation method of tantalum 10 tungstenalloys

Technical field

The invention belongs to technical field of metal material preparation, be specifically related to a kind of preparation method of tantalum 10 tungstenalloys.

Background technology

Tantalum 10 tungstenalloys have very high hot strength, good ductility, weldability and good corrosion resistance nature, be applicable to high temperature, high pressure, the Working environment such as corrosion-resistant, be widely used in the fields such as chemical industry, aerospace, nuclear industry and high temperature components and parts; The technique of traditional mode of production tantalum 10 tungstenalloys, adopt twice above vacuum electron beam melting or vacuum arc melting to prepare ingot blank, then adopt in more than 1200 ℃ temperature and forge or extrusion blooming, at 500 ℃, be rolled below, drawing etc., finally can be made into the products such as sheet material, bar, wire rod, tubing.But the ingot blank that adopts this method to produce, tissue odds is even, and therefore blank embrittlement and easily coming off is necessary to improve.

Summary of the invention

The technical problem that the present invention solves: the preparation method that tantalum 10 tungstenalloys of a kind of ingot blank homogeneous microstructure and difficult drop-off and embrittlement are provided.

The technical solution used in the present invention: the preparation method of tantalum 10 tungstenalloys, comprises following step:

1) tantalum powder and tungsten powder are packed in drum mixer after the ratio preparation with 9:1, with the rotating speed mixing of 120r/min, within 24 hours, take out;

2) powder mixing is crossed to 120 mesh sieves and obtain fine powder material;

3) fine powder material is pressed into alloy rod with 500 tons of oil presses;

4) alloy rod is put into vacuum sintering furnace, vacuumize 10-2Pa, be heated to 2400 ℃, be incubated 2 hours and take out to obtain raw ingot base;

5) raw ingot base is made to alloy ingot blank with at least twice melting of vacuum electron beam stove;

6) alloy ingot blank is put into high frequency furnace, take out repeatedly after being heated to 1400 ℃ and forge, obtain finished product ingot blank.

The present invention compared with prior art, by abundant mixing and the repeatedly melting of tantalum powder and tungsten powder, solved the even problem of ingot blank tissue odds, improved the difficult problem that blank easily comes off with embrittlement.

Embodiment

A kind of embodiment of the present invention is described below: the preparation method of tantalum 10 tungstenalloys comprises following step:

1) tantalum powder and tungsten powder are packed in drum mixer after the ratio preparation with 9:1, with the rotating speed mixing of 120r/min, within 24 hours, take out;

2) powder mixing is crossed to 120 mesh sieves and obtain fine powder material;

3) fine powder material is pressed into alloy rod with 500 tons of oil presses;

4) alloy rod is put into vacuum sintering furnace, vacuumize 10-2Pa, be heated to 2400 ℃, be incubated 2 hours and take out to obtain raw ingot base;

5) raw ingot base is made to alloy ingot blank with at least twice melting of vacuum electron beam stove;

6) alloy ingot blank is put into high frequency furnace, take out repeatedly after being heated to 1400 ℃ and forge, obtain finished product ingot blank.

Because the intensity of tantalum 10 tungstenalloys is higher than pure tantalum, and solidity to corrosion is similar to pure tantalum, thereby has obtained important application in chemical industry and space industry.

Above-described embodiment, is preferred embodiment of the present invention, is not used for limiting the scope of the present invention, and the equivalence of being done with content described in the claims in the present invention therefore all changes, within all should being included in the claims in the present invention scope.

Claims (1)

1. the preparation method of tantalum 10 tungstenalloys, is characterized in that comprising following step:

1) tantalum powder and tungsten powder are packed in drum mixer after the ratio preparation with 9:1, with the rotating speed mixing of 120r/min, within 24 hours, take out;

2) powder mixing is crossed to 120 mesh sieves and obtain fine powder material;

3) fine powder material is pressed into alloy rod with 500 tons of oil presses;

4) alloy rod is put into vacuum sintering furnace, vacuumize 10-2Pa, be heated to 2400 ℃, be incubated 2 hours and take out to obtain raw ingot base;

5) raw ingot base is made to alloy ingot blank with at least twice melting of vacuum electron beam stove;

6) alloy ingot blank is put into high frequency furnace, take out repeatedly after being heated to 1400 ℃ and forge, obtain finished product ingot blank.