Method for producing ultrahigh pressure switch pressure-bearing aluminum alloy tanks under low pressure through V method

An aluminum alloy tank body and ultra-high pressure technology, which is applied in metal processing equipment, casting molding equipment, casting mold components, etc. range effect

Active Publication Date: 2013-02-27
NANYANG HUISEN PRECISION INSTR CASTING
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

This method solves casting defects such as slag inclusions, pores, pinholes, etc. caused by the strong erosion of the casting mold by the metal liquid caused by the existing vacuum molding gravity pouring process, and at the same time can solve the problem that the gravity pouring system occupies too much metal liquid, especially for thinner wall thickness, The problem of low yield of castings with large volume

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  • Method for producing ultrahigh pressure switch pressure-bearing aluminum alloy tanks under low pressure through V method

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Embodiment Construction

[0021] As shown in Figure 1, the process system of the present invention for manufacturing casting 4 (ultra-high voltage switch pressurized aluminum alloy tank body) is divided into upper box 2 and lower box 5 by the parting surface, and the upper box 2 is provided with row The air hole 1; the gate pad 6 is set in the lower box 5 to connect the mold with the low-pressure pouring system 7, the outlet of the low-pressure pouring system 7 is provided with an asbestos gasket 8, and the bottom plate 10 is covered to prevent sand from falling on the workbench 10 It is placed on the top surface of the sand box and fixed with the sand box; the cast iron chiller 3 is placed on the flange sealing surface of the corresponding tank body, the purpose is to chill and prevent pinholes; the upper box 2 and the lower box 5 are fixed together and placed in the working On stage 10, molten aluminum 12 is connected to the low-pressure pouring system 7 through the riser pipe 11, and enters the mol...

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Abstract

The invention discloses a method for producing ultrahigh pressure switch pressure-bearing aluminum alloy tanks under low pressure through a V method in the technical field of vacuum casting, which comprises the following processing steps: jig manufacture, low-temperature gating system manufacture, upper tank molding, lower tank molding, lower core mould assembling, casting and pressure removing and picking. The method solves the defects of slag inclusion, pores, pinholes and the like of cast caused by intensive scouring of molten metal to cast, and simultaneously can solve the problems that the cavity casting system occupies excessive molten metal, and particularly the product yield of cast with low wall thickness and large size is low.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy tank casting, and in particular relates to a process method combining vacuum molding (V method) and low-pressure pouring of an ultra-high pressure switch pressure-bearing aluminum alloy tank. Background technique [0002] Method casting is the abbreviation of vacuum sealing molding or negative pressure molding casting process. Its principle is to use plastic film to cover the mold and seal the sand box, rely on the vacuum pump to draw out the air in the mold, cause the pressure difference between the inner box and the outside of the mold, and make the dry sand compact. Form the desired cavity. No binder is used in the molding sand, and the shakeout is simple, which minimizes the consumption of molding materials, reduces waste sand, and improves working conditions. Its dry sand reuse rate is as high as 95%, and the surface quality and dimensional accuracy of castings are greatly improved, w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D18/00B22D18/06B22C9/03
Inventor 徐通生赵松庆王宏伟杨焕乔
Owner NANYANG HUISEN PRECISION INSTR CASTING
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