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Method for casting surface layer by using TiAlC-base ceramic powder as metal and titanium alloy

A technology of ceramic powder and titanium alloy, which is applied in casting molding equipment, metal processing equipment, coating, etc., can solve the problems of expensive modeling materials, reduce production costs, and complex production processes, and achieve considerable economic and social benefits. The effect of reducing production cost and simple process preparation

Inactive Publication Date: 2013-04-24
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

TiAlC-based cermet powder or ceramic sand grains are used as titanium alloy casting surface materials, which can ensure that they will not react with titanium alloys at high temperatures, can replace yttrium oxide, reduce production costs, and solve the problem of expensive investment casting surface layer materials for titanium alloys and complex production processes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Preparation of Ti 3 AlC 2 For the cermet block, add the group powder according to the ratio: Ti powder, Al powder, C powder, corundum ball and absolute ethanol are weighed according to the following weight fraction ratio:

[0015] Ti powder 48 parts;

[0016] Al powder 9 parts;

[0017] C powder 8 parts;

[0018] Corundum ball 325 parts (5:1);

[0019] Proper amount of absolute ethanol.

[0020] Preparation of Ti 3 AlC 2 The cermet method is as follows:

[0021] (A) Weigh the components of the raw materials according to the ratio, and then perform ball milling, drying, tableting, and sintering to obtain Ti 3 AlC 2 bulk material;

[0022] (B) will get Ti 3 AlC 2 The cermet block is cut and polished into 325 and 100 mesh sand grains, and zirconium acetate is used as a binder to bond it into the required composite matrix shell for use;

[0023] (C) Carry out the shell test. In the vacuum induction heating furnace, put the Ti alloy in a calcium oxide crucible a...

Embodiment 2

[0026] Preparation of Ti 2 AlC-TiC-Ti 3 Al cermet block, according to the ratio of the group powder added: Ti powder, Al powder, C powder, corundum balls and absolute ethanol are weighed according to the following weight fraction ratio:

[0027] Ti powder 32 parts;

[0028] Al powder 9.9 parts;

[0029] C powder 3.6 parts;

[0030] Corundum ball 227.5 parts (5:1);

[0031] Proper amount of absolute ethanol.

[0032] Preparation of the above Ti 2 AlC-TiC-Ti 3 The Al cermet method is as follows:

[0033] (A) Weigh the components of the raw materials according to the ratio, and then perform ball milling, drying, tableting, and sintering to obtain Ti 2 AlC-TiC-Ti 3 Al bulk material;

[0034] (B) will get Ti 2 AlC-TiC-Ti 3 Al cermet block, cut and grind it into 100 mesh sand grains, use high-temperature adhesive, stick it into the required composite matrix shell, ready for use;

[0035] (C) Carry out the shell test. In the vacuum induction heating furnace, put metal Ti...

Embodiment 3

[0038] Preparation of TiC 1-x Metal-ceramic blocks, according to the ratio of the group powder added: Ti powder, Al powder, C powder, corundum balls and absolute ethanol are weighed according to the following weight fraction ratio:

[0039] Ti powder 48 parts;

[0040] Al powder 9.9 parts;

[0041] C powder 7.2 parts;

[0042] Corundum ball 325.5 parts (5:1);

[0043] Preparation of the above TiC 1-x The cermet method is as follows:

[0044] (A) Weigh the components of the raw materials according to the ratio, and then perform ball milling, drying, tableting, and sintering to obtain TiC 1-x bulk material;

[0045] (B) will get TiC 1-xCermet blocks are cut and polished into 100-mesh sand grains, and bonded with high-temperature adhesives to form the required composite matrix shells for use;

[0046] (C) Carry out the shell test. In the vacuum induction heating furnace, put the Ti alloy in a calcium oxide crucible and melt it. When melting, the furnace is filled with arg...

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Abstract

The invention relates to an alloy surface casting method, in particular to a method for casting a surface layer by using TiAlC-base ceramic powder as metal and titanium alloy. TiAlC-base metal ceramic power or ceramic block is made from Ti2AlC, Ti3AlC2 and TiC1-x. The method includes: weighing materials according to the proportion, and performing ball milling, drying, tabletting and sintering to obtain Ti3AlC2 block material; cutting and grinding the Ti3AlC2 block material into grains, adhering the grains into a compound-base shell by zirconium acetate as binder; performing shell test, melting Ti alloy in a calcia crucible in a vacuum induction heating furnace, and vacuuming the furnace and filling argon during melting. The yttrium oxide can be replaced with the TiAlC-base ceramic powder used in method, so that production cost is lowered. The problems that alloy surface molding material for precision investment casting is expensive and production process is complex are solved.

Description

technical field [0001] The invention relates to a method for casting an alloy surface layer, in particular to a method for using TiAlC-based ceramic powder as a metal and titanium alloy casting surface layer. Background technique [0002] Titanium and titanium alloys are widely used in various fields due to their excellent properties. The production cost of titanium alloy parts remains high. Alloy investment investment casting is one of the important methods of titanium alloy forming, and it is a successful technical route for people to explore and reduce the production cost of titanium alloy parts. However, due to the high chemical activity of titanium, molten titanium can react with almost all refractory materials. Commonly used refractory materials will react violently with molten titanium, and cannot be used as surface layer modeling materials for investment precision casting of titanium alloys. Yttrium oxide, zirconium oxide or tungsten powder with high chemical stab...

Claims

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Application Information

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IPC IPC(8): B22D19/00B22C3/00
Inventor 曹大力董艳芳李凯辉刘延福邵萍萍
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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