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Casting method of high-volume-fraction reinforced-phase titanium-based composite material casting

A titanium-based composite material and high volume fraction technology, applied in the casting field of titanium-based composite materials, can solve the problems of complex centrifugal casting method, difficult filling of gravity casting, difficult to guarantee internal quality, etc. The effect of uniform hardness distribution, dimensional accuracy and high surface finish

Active Publication Date: 2014-12-03
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problems of the existing high-volume-fraction reinforced-phase titanium-based composite materials, such as difficulty in filling the mold in gravity casting, difficulty in ensuring internal quality, complex process of centrifugal casting method, and low material utilization rate, and further provides a high-volume-fraction reinforced phase titanium Casting Method for Matrix Composite Castings

Method used

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specific Embodiment approach 1

[0020] Specific implementation mode one: combine figure 1 and Figure 7 To illustrate, the casting method of a high volume fraction reinforced phase titanium-based composite casting in this embodiment is carried out in accordance with the following steps:

[0021] Step 1, manufacture the suction casting mold 8, the suction casting mold 8 is a metal mold, the middle part of the suction casting mold 8 is processed with a cavity 8-1, and the inside of the suction casting mold 8 is processed with two exhaust channels 8-3, Two exhaust passages 8-3 are arranged side by side on both sides of the cavity 8-1, the upper end of the exhaust passage 8-3 communicates with the cavity 8-1, and the lower end of the exhaust passage 8-3 communicates with the suction casting mold 8. The bottom is offset, the upper surface of the suction casting mold 8 is provided with an annular sealing groove, and the gate 8-2 of the suction casting mold 8 is located in the annular sealing groove;

[0022] Ste...

specific Embodiment approach 2

[0033] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the titanium alloy matrix material of the high volume fraction reinforced titanium-based composite material in step 2 is TAl titanium alloy, TC 4 Titanium alloy, TB 5 Titanium alloy or Ti 60 titanium alloy. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0034]Embodiment 3: This embodiment differs from Embodiment 1 to Embodiment 2 in that: in step 6, the melting current is 400A. After smelting for 2.5 minutes, increase the arc current to 625A and keep it for 1.5 minutes to obtain a superheated melt. The other steps and parameters are the same as those in the specific embodiment 1 to 2.

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Abstract

A casting method of a high-volume-fraction reinforced-phase titanium-based composite material casting relates to casting methods of titanium-based composite materials. The casting method of the high-volume-fraction reinforced-phase titanium-based composite material casting is used for solving the problems that existing high-volume-fraction reinforced-phase titanium-based composite material gravity casting methods are high in mold filling difficulty and cannot guarantee internal quality easily as well as centrifugal casting methods are complex in processes and low in material utilization rate. The casting method of the high-volume-fraction reinforced-phase titanium-based composite material casting mainly comprises the steps of, firstly, manufacturing a suction casting mold; secondly, melting high-volume-fraction reinforced-phase titanium-based composite material casting ingots; thirdly, smelting the casting ingots, and rotating and remelting the casting ingots twice; fourthly, preparing re-smelting of the casting ingots; fifthly, performing vacuum melting to obtain superheated melt; sixthly, switching on a vacuum system of the suction casting chamber of a vacuum electric arc smelting furnace, pushing a suction casting button and performing suction casting mold filling and cooling to obtain the casting. The casting method of the high-volume-fraction reinforced-phase titanium-based composite material casting is applied to preparation of the high-volume-fraction reinforced-phase titanium-based composite material casting.

Description

technical field [0001] The invention relates to a casting method of a titanium-based composite material. Background technique [0002] Due to its high specific strength, high specific modulus and high temperature resistance, titanium matrix composites have broad application prospects in aviation, aerospace, automotive and other industrial fields, which have attracted widespread attention. Compared with fiber-reinforced titanium-based composites, particle-reinforced titanium-based composites have isotropic properties, the reinforcement phase is firmly combined with the matrix, and the manufacturing process is relatively simple, which is obviously attractive. Powder metallurgy, casting, mechanical alloying, rapid solidification and other methods have been used to synthesize particle-reinforced titanium-based composites in situ. Compared with other processes, the melting and casting method has the characteristics of simple process and low cost, which is conducive to the prepara...

Claims

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Application Information

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IPC IPC(8): B22D18/06C22C1/03C22C1/10C22C32/00C22C14/00
Inventor 骆良顺韩宝帅王亮孟宪宇苏彦庆史艳磊郭景杰
Owner HARBIN INST OF TECH
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