Production process of ultrathin-wall and leakage-free aviation aluminium alloy castings

A technology for aluminum alloy castings and production process, which is applied in the production process field of ultra-thin-wall non-leakage aviation aluminum alloy castings, can solve the problems of not allowing pressure leakage, small machining allowance, strict acceptance, etc., so as to improve the appearance The effect of mass, increasing exhaust speed, and improving airtightness

Active Publication Date: 2010-08-18
CHANGZHOU RANTO METALWORK
View PDF8 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Aviation aluminum alloy die-casting parts have high dimensional accuracy, small machining allowance, and thin walls. Not only that, due to the particularity of use under aviation conditions, pressure leakage is not allowed, the structure of the parts is required to be dense, casting defects are not allowed, and the acceptance is extremely high. harsh

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Production process of ultrathin-wall and leakage-free aviation aluminium alloy castings
  • Production process of ultrathin-wall and leakage-free aviation aluminium alloy castings
  • Production process of ultrathin-wall and leakage-free aviation aluminium alloy castings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] The present invention will be further described below in conjunction with accompanying drawing:

[0037] A production process of an ultra-thin-wall non-leakage aerospace aluminum alloy casting, comprising the following steps:

[0038] a) Manufacture the die-casting mold, process the double-ring inner gate 2, the die-casting inlet 4 and the distribution runner 5 on the right mold 1 of the die-casting mold; process the T-shaped exhaust groove 7 on the left mold 8, and manufacture it The left mold 8 and the right mold 1 are assembled and installed on the extruder;

[0039] b) pouring, pouring molten aluminum at 640-700°C into the die-casting inlet on the right mold 8; the temperature of the molten aluminum is preferably 660°C.

[0040] c) Light pressure, the extruder pushes the molten aluminum material through the compression head, so that the aluminum material is distributed through the distribution runner 5 located in the right mold 1 and then enters the double-ring inn...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a production process of ultrathin-wall and leakage-free aviation aluminium alloy castings. The production process is characterized by comprising the following steps of: manufacturing a pressure-casting mould, machining a double circular ingate, a pressure-casting inlet and a distribution pouring gate on a right mould of the pressure-casting mould; machining a T-shaped exhaust groove on a left mould of the pressure-casting mould, pouring, lightly pressing, strongly pressing and demoulding; and finally carrying out infiltration process treatment. The special pressure-casting mould of the ultrathin-wall and leakage-free aviation aluminium alloy castings adopts a double circular feeding structure and a T-shaped exhaust groove structure, wherein the double circular feeding structure ensures that aluminium liquid fast enters a cavity in the pressure casting process and the thin wall of a part is partially filled; and the T-shaped exhaust groove structure ensures the exhaust of the cavity during the fast filling of the aluminium liquid and prevents the castings from carrying gas. The infiltration process of the invention improves the air impermeability of the product and enables the part to have an inflaming retarding function in addition, and the infiltration is finished through carrying out the work procedures of cleaning with hot water, drying, infiltrating and baking on the castings.

Description

technical field [0001] The invention relates to the field of die-casting, in particular to a production process of an ultra-thin-wall non-leakage aerospace aluminum alloy casting used for processing an oxygen regulating valve casting of an oxygen mask. Background technique [0002] Aviation aluminum alloy die-casting parts have high dimensional accuracy, small machining allowance, and thin walls. Not only that, due to the particularity of use under aviation conditions, pressure leakage is not allowed, the structure of the parts is required to be dense, casting defects are not allowed, and the acceptance is extremely harsh. [0003] A typical product is the key component of the oxygen mask in the aviation lifesaving system—the oxygen regulating valve casting of the oxygen mask. The casting belongs to precision die-casting aluminum alloy, the total weight is only 55g, and the structure is complex, and the minimum non-processing wall thickness is 0.5mm , In addition, it must b...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B22D17/10B22D17/22
Inventor 顾斌杰
Owner CHANGZHOU RANTO METALWORK
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap