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Precision casting method for thick-wall base aluminium alloy casting

An aluminum alloy casting and precision casting technology, which is applied in the field of investment precision casting of thick-walled castings, can solve the problems of high one-time forming rate, failing to meet the technical requirements of parts, and high cost, achieving great economic benefits and improving product quality. And the effect of yield and production cost reduction

Active Publication Date: 2012-10-10
西安超晶科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Generally, thick-walled aluminum alloy castings are prone to serious casting defects, and due to the complex structure, more curved surfaces, and small processing volume of this type of casting, it requires a high molding rate at one time, and at the same time has high mechanical properties and metallurgical properties. caused great technical difficulties
It may be difficult to avoid these defects by other casting methods, and the technical requirements of the parts cannot be met, or the casting yield is low and the cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1 Design and manufacture of wax molds: Design and manufacture metal molds according to the structure of the base, the casting shrinkage rate is 1.3, and the draft angle is 2′.

[0021] 2 Press the wax mold: use the wax mold mold made in the first step to press the base wax mold on the wax press machine, the pressing temperature wax cylinder temperature: 60-75 ℃, the nozzle temperature: 60-65 ℃, the mold temperature: 30-35 ℃, injection pressure: 1-3MPa, clamping pressure: 10-15MPa, holding time: 15-25 minutes.

[0022] 3. Design and manufacture of gating system: using a wax press machine to respectively press the sprue cup, runner, sprue and ingate;

[0023] 4. Model repair: remove burrs, drape seams, parting lines, fill pits, pores, shrinkage and other defects, to ensure that the surface of the wax model is smooth and smooth, and the transfer is smooth.

[0024] 5-group type: Use group-type wax to bond the wax mold pressed in the second part and the sprue cup, runner, ...

Embodiment 2

[0038] 1 Design and manufacture of wax molds: Design and manufacture metal molds according to the structure of the base, the casting shrinkage rate is 1.3, and the draft angle is 2′.

[0039] 2 Press the wax mold: use the wax mold mold made in the first step to press the base wax mold on the wax press machine, the pressing temperature wax cylinder temperature: 60-75 ℃, the nozzle temperature: 60-65 ℃, the mold temperature: 30-35 ℃, injection pressure: 1-3MPa, clamping pressure: 10-15MPa, holding time: 15-25 minutes.

[0040] 3. Design and manufacture of gating system: using a wax press machine to respectively press the sprue cup, runner, sprue and ingate;

[0041] 4. Model repair: remove burrs, drape seams, parting lines, fill pits, pores, shrinkage and other defects, to ensure that the surface of the wax model is smooth and smooth, and the transfer is smooth.

[0042] 5-group type: Use group-type wax to bond the wax mold pressed in the second part and the sprue cup, runner, ...

Embodiment 3

[0056] 1 Design and manufacture of wax molds: Design and manufacture metal molds according to the structure of the base, the casting shrinkage rate is 1.3, and the draft angle is 2′.

[0057] 2 Press the wax mold: use the wax mold mold made in the first step to press the base wax mold on the wax press machine, the pressing temperature wax cylinder temperature: 60-75 ℃, the nozzle temperature: 60-65 ℃, the mold temperature: 30-35 ℃, injection pressure: 1-3MPa, clamping pressure: 10-15MPa, holding time: 15-25 minutes.

[0058] 3. Design and manufacture of gating system: using a wax press machine to respectively press the sprue cup, runner, sprue and ingate;

[0059] 4. Model repair: remove burrs, drape seams, parting lines, fill pits, pores, shrinkage and other defects, to ensure that the surface of the wax model is smooth and smooth, and the transfer is smooth.

[0060] 5-group type: Use group-type wax to bond the wax mold pressed in the second part and the sprue cup, runner, ...

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PUM

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Abstract

The invention discloses a precision casting method for a thick-wall base aluminium alloy casting. The precision casting method comprises the steps of designing a wax mould, making the wax mould, moulding, carrying out sand lining, dewaxing, roasting a mould shell, baking the mould shell, modelling, smelting and pouring, cleaning the casting and ageing. The precision casting method for the thick-wall base aluminium alloy casting disclosed by the invention provides a reliable technical scheme for production of the thick-wall aluminium alloy casting, and a casting meeting the requirements is made; meanwhile, product quality and rate of finished products are greatly improved by adopting a pressure regulating casting moulding method, production cost is reduced, and great economic benefit is created.

Description

technical field [0001] The invention belongs to the casting technical field of aluminum alloy castings, in particular to a precision casting forming method, which is especially suitable for investment precision casting forming methods of thick-walled castings with complex structures and high dimensional accuracy requirements. Background technique [0002] As a traditional metal material, cast aluminum alloy is widely used in aerospace, aviation, automobile, machinery and other industries due to its low density and high specific strength. With the development of modern industry and new casting technology, cast aluminum alloy The demand is increasing. At the same time, with the development of high-performance aerospace vehicles, their internal components are also developing in the direction of large size, high precision requirements, complex structures, and high metallurgical mechanical properties. [0003] Generally, thick-walled aluminum alloy castings are prone to serious ...

Claims

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Application Information

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IPC IPC(8): B22C9/04B22D18/04B22D18/08B22D21/04C22C1/02C22C1/06C22C21/00
Inventor 朱鹏超狄玮岚徐玮周中波张利军薛祥义
Owner 西安超晶科技股份有限公司
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