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Aluminium-tungsten system intermediate alloy and preparing method thereof

A master alloy and tungsten trioxide technology, applied in the field of alloys, can solve the problems of unstable melting, no development results of aluminum-tungsten series master alloys, and difficult control of melting current, so as to achieve stable preparation and melting process, and simple and easy processing. , the effect of convenient preparation

Inactive Publication Date: 2004-06-30
忠世高新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the preparation of titanium alloys requires the addition of various metal elements, especially aluminum, tungsten, niobium, molybdenum, and titanium metal elements. During the smelting process, due to the inconsistency of the melting points of the above metal elements, the applied melting current is suddenly high. It is not easy to control the sudden low, resulting in unstable melting
If aluminum, tungsten, niobium, molybdenum, and titanium can be added to titanium alloys in the form of master alloys, similar problems will be avoided, but there is no research result on aluminum-tungsten master alloys.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Aluminum-tungsten master alloy, by weight percentage, is prepared AlWNb alloy, and the composition is: 30% tungsten, 27% niobium, and the balance of aluminum;

[0015] The preparation method is as follows:

[0016] 1) Using the ignition smelting method outside the furnace: using a graphite-lined furnace, conventional steps, drying, building the furnace, and taking WO according to the stated ratio 3 1kg, Nb 2 o 5 1.010kg, Al 0.88kg, CaF 2 0.5kg ingredients (of which CaF 2 as a slagging agent), uniform mixing, furnace loading, smelting, cooling, furnace start-up, weighing, finishing, crushing, magnetic separation, packaging, operating parameters: raw material drying temperature 75±5°C, magnesium chips ignition Smelting, cooling for 24 hours, potassium chlorate KClO 3 Be catalyzer, add-on is 3.4% of raw material gross weight, 0.13kg, reduces heat with batching slag, and reaction is stable, and alloy is formed well, and the addition of this furnace batching slag is ...

Embodiment 2

[0020] The difference from Example 1 is:

[0021] Preparation of AlWMoTi alloy, the composition is: 13% tungsten, 26% molybdenum, 8% titanium, 53% aluminum;

[0022] 1) Using the ignition smelting method outside the furnace:

[0023] Ingredients ratio: MoO 3 0.6kg, WO 3 0.5kg, TiO 2 0.4kg, Al 3kg, CaF 2 4.16kg, KClO 3 0.6kg, batching slag 0.6kg;

[0024] 2) Using intermediate frequency furnace melting method: AlWMoTi alloy is prepared, the composition is: 13% tungsten, 26% molybdenum, 8% titanium, 53% aluminum; metallurgical ingredient ratio: Mo 2kg, W 1kg, Ti 0.7kg, Al 5.6kg, WO 3 0.7kg, NaNO 2 0.6kg.

Embodiment 3

[0026] The difference from Example 1 is:

[0027] Preparation of AlW alloy, the composition is: 50% tungsten, 50% aluminum;

[0028] 1) Using the ignition smelting method outside the furnace:

[0029] Ingredients ratio: WO 3 1.0kg, Al 1.24kg, CaF 2 0.40kg, KClO 3 0.10kg, slag 0.30kg.

[0030] 2) Using intermediate frequency furnace melting method: AlW alloy is prepared, the composition is: 50% tungsten, 50% aluminum; metallurgical ingredient ratio: Al 1kg, W 1kg; 0.1kg tungsten trioxide as antioxidant; 0.1kg sodium nitrite as flux.

[0031] AlW series alloy characteristics: have certain toughness (it can be smashed with a 16-pound sledgehammer), easy to break, good alloying, and strong uniformity.

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PUM

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Abstract

The invention is an Al-Wu system medium alloy and preparing method. Its components (wt%): Wu 10-75, Nb 0-75, Mo 0-75, Ti 0-20 and the rest Al. It can adopt out-furnace ignition smelting: the drying temperature of the raw material 70-80 deg.C, when mixing, add with burden residue accounting for 5-15% of total weight of the raw material; also adopt medium-frequency furnace melting: when mixing according to the above proportion, add with antioxidizer and fluxing agent. The smelting is stable, avoiding the phenomenon that the smelting current is sometimes high and sometimes low. When preparing Ti alloy, it is able to add the Wu-Al system medium system in alloy package mode.

Description

technical field [0001] The invention relates to alloy technology, in particular to an aluminum-tungsten master alloy and a preparation method thereof. Background technique [0002] In the prior art, the preparation of titanium alloys requires the addition of various metal elements, especially aluminum, tungsten, niobium, molybdenum, and titanium metal elements. During the smelting process, due to the inconsistency of the melting points of the above metal elements, the applied melting current is suddenly high. The sudden low is not easy to control, resulting in unstable smelting. If aluminum, tungsten, niobium, molybdenum, and titanium metal elements can be added to titanium alloys in the form of master alloys, similar problems will be avoided. However, there is no research result on aluminum-tungsten master alloys. Contents of the invention [0003] In order to overcome the above disadvantages, the object of the present invention is to provide an aluminum-tungsten master ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22C21/00C22C27/04
Inventor 张忠世
Owner 忠世高新材料股份有限公司
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