Casting technological method of graphite titanium alloy casting

A casting process and titanium alloy technology, applied in the field of titanium alloy casting, can solve the problems of reducing the quality of casting products, turbulent flow of molten metal, and flow marks on the surface of castings, so as to achieve good equipment adaptability, slow down the drop flow, and facilitate production and operation Effect

Active Publication Date: 2018-08-07
LUOYANG SUNRUI TI PRECISION CASTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Conventional gravity casting is a casting process in which the molten metal flows into the machined graphite mold in a static state through its own gravity. Due to the structure of the casting, the design of the runner will inevitably cause turbulent flow of the molten metal in the cavity due to the large height drop, which will cause the surface of the casting to Flow marks are formed, and the large drop will also cause the molten metal to solidify too quickly, resulting in uneven solidification, which cannot achieve sequential solidification and form shrinkage cavity defects; centrifugal casting is to rotate the graphite mold by mechanical means, and the molten metal is directly poured into the rotating graphite The casting mold makes it fast ...

Method used

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  • Casting technological method of graphite titanium alloy casting
  • Casting technological method of graphite titanium alloy casting
  • Casting technological method of graphite titanium alloy casting

Examples

Experimental program
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Effect test

Embodiment 1

[0046] A casting process method for a graphite-type titanium alloy casting, comprising the steps of:

[0047] (1) According to the graphite-type titanium alloy casting (take the optical backplane casting customized by a customer as an example, the casting is a plate-shaped casting with uniform wall thickness, the outline size is: 1030×341×60, the wall thickness is 22mm, figure 1 ), select different casting inclination angles, and build the sprue on the basis of the selected casting inclination angle. Among them, the main sprue of the casting is located at the level of the top surface, which is convenient for the sprue cup to overlap, and the ratio of the cross-sectional area of ​​the casting system Main sprue: horizontal sprue: ingate = 1:2:3, the main sprue is ￠80, and the ingate is set at the thick and large part of the casting, and the casting plan with the corresponding casting inclination angle is obtained; using Huazhu CAE The simulation software performs numerical simul...

Embodiment 2

[0051] A casting process method for a graphite-type titanium alloy casting, comprising the steps of:

[0052] (1) According to the three-dimensional digital model of a graphite-type titanium alloy casting, different casting inclination angles are selected, and the sprue is erected on the basis of the selected casting inclination angle to obtain a casting plan for the corresponding casting inclination angle; use Huazhu CAE simulation software Carry out numerical simulation on the casting plan. When the simulation result shows that the single size of the shrinkage cavity defect in the casting is less than 1.5mm, and the number of defects in each 100mm×100mm×100mm space volume is less than 5, it is determined as the best casting plan, and then the best casting angle is obtained. (45°); Then divide the digital model with the sprue set up on the basis of the best casting angle;

[0053] (2) According to the numerical control programming, program the digital model after the parting ...

Embodiment 3

[0056] A casting process method for a graphite-type titanium alloy casting, comprising the steps of:

[0057] (1) According to the three-dimensional digital model of a graphite-type titanium alloy casting, different casting inclination angles are selected, and the sprue is erected on the basis of the selected casting inclination angle to obtain a casting plan for the corresponding casting inclination angle; use Huazhu CAE simulation software Carry out numerical simulation on the casting plan. When the simulation result shows that the single size of the shrinkage cavity defect in the casting is less than 1.5mm, and the number of defects in each 100mm×100mm×100mm space volume is less than 5, it is determined as the best casting plan, and then the best casting angle is obtained. (35°); Then divide the digital model with the sprue set up on the basis of the best casting angle;

[0058] (2) According to the numerical control programming, program the digital model after the parting ...

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Abstract

The invention relates to the field of titanium alloy casting, particularly to a casting technological method of a graphite titanium alloy casting. The casting technological method comprises the stepsof acquiring an optimal casting angle according to a three-dimensional digital model of the graphite titanium alloy casting by virtue of Huazhu CAE simulation software; then, parting a pouring gate digital model established based on the optimal casting angle; processing graphite into graphite theoretical casting molds, carrying out degassing treatment, splicing the graphite theoretical casting molds, and carrying out vacuum inclined centrifugal casting, so as to obtain the graphite titanium alloy casting. According to the casting technological method, fall flow of molten titanium can be effectively relieved, the purpose that molten titanium sequentially solidifies is achieved, besides, inner shrinkage cavity defects of the casting are eliminated through feeding of centrifugal force, flow mark defects of the surface of the casting can be decreased as well, product quality of the titanium alloy casting is integrally improved, follow-up welding repairing trimming is reduced, the production cycle of a product is shortened, and production cost is reduced.

Description

technical field [0001] The invention relates to the field of titanium alloy casting, in particular to a casting process method for a graphite-type titanium alloy casting. Background technique [0002] There are currently two relatively mature production methods for machining graphite-type titanium alloy castings, one is gravity casting (static casting), and the other is centrifugal casting. [0003] Conventional gravity casting is a casting process in which the molten metal flows into the machined graphite mold in a static state through its own gravity. Due to the structure of the casting, the design of the runner will inevitably cause turbulent flow of the molten metal in the cavity due to the large height drop, which will cause the surface of the casting to Flow marks are formed, and the large drop will also cause the molten metal to solidify too quickly, resulting in uneven solidification, which cannot achieve sequential solidification and form shrinkage cavity defects; c...

Claims

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Application Information

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IPC IPC(8): B22D13/00B22D27/15
CPCB22D13/00B22D27/15
Inventor 贾国成孙宏喆乔海滨
Owner LUOYANG SUNRUI TI PRECISION CASTING
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