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A tool and method for controlling the wall thickness uniformity of hot isostatic powder metallurgy thin-walled components

A technology of thin-walled components and control methods, applied in other manufacturing equipment/tools, engine components, turbines, etc., can solve the problems of poor wall thickness uniformity and difficult wall thickness control, and achieve good assembly accuracy, ensure assembly accuracy, and improve The effect of guiding and assembly positioning

Active Publication Date: 2018-09-18
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem of the present invention is: to overcome the deficiencies of the prior art, to provide a tool and method for controlling the wall thickness uniformity of hot isostatic powder metallurgy thin-walled components, which are used for hot isostatic pressing of thin-walled components. The method can solve the problems of difficult wall thickness control and poor wall thickness uniformity in the forming process of such components, and realize the uniformity control of wall thickness

Method used

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  • A tool and method for controlling the wall thickness uniformity of hot isostatic powder metallurgy thin-walled components
  • A tool and method for controlling the wall thickness uniformity of hot isostatic powder metallurgy thin-walled components
  • A tool and method for controlling the wall thickness uniformity of hot isostatic powder metallurgy thin-walled components

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Embodiment

[0052] A wall thickness uniformity control tool for hot isostatic powder metallurgy thin-walled components. Insert 6 and outer support 7, such as Figure 4 and Figure 5 shown;

[0053] The inner core 1 of the envelope is cylindrical, and its cross-section is elliptical, the major axis of the ellipse is 800mm, the minor axis is 200mm, and the height is 400mm;

[0054] The gap between the inner core 1 and the wall 2 is used to fill the powder to be formed, and the distance between the inner core 1 and the wall 2 is not less than the wall thickness of the thin-walled member to be formed;

[0055] The upper limit insert 5 is an annular structure, and the cross-sectional view is as follows Figure 6 shown. The inner surface of the upper limit insert 5 is matched with the outer surface of the inner core 1 of the sheath, and the fit gap is 0-0.05mm; the outer surface of the upper limit insert 5 is in contact with the inner surface of the sheath wall 2, and the fit clearance is ...

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Abstract

The invention relates to a wall-thickness uniformity control tool and method of hot isostatic pressure powder metallurgy thin-walled structural members, in particular to wall-thickness control during near-net forming preparation, and belongs to the technical field of forming of thin-walled structural members. Thin walls refer to walls with the thickness being 0.3-5 mm. The thin-walled structural members are widely applied to elastic structures of guided missiles, outsides of aircraft engines, spray tubes and the like. A hot isostatic pressure powder metallurgy process can achieve preparation of similar structural members, but the problems of low wall-thickness uniformity and large differences exist in practical application, so that the percent of pass of products is low. According to the wall-thickness uniformity control tool and method, the proper wall-thickness uniformity control process is designed, inner cavity control, outer wall shape control and the assembling procedure of a casing cavity are optimized, good wall-thickness size control is achieved, and the purpose of preventing products from deforming is achieved.

Description

technical field [0001] The invention relates to a tooling and method for controlling wall thickness uniformity of hot isostatic powder metallurgy thin-walled components, especially for wall thickness control during near-net shape preparation, and belongs to the technical field of forming thin-walled components. The thin wall refers to the wall thickness of 0.3-5mm. Background technique [0002] Thin-walled structural parts are widely used in the body structure of missiles, the outer culvert of aero-engines, and nozzles. In order to meet the requirements of light weight and high rigidity, such components are usually designed as thin-wall + rib structure, the thinnest wall thickness can reach 1mm, and the surface is distributed with criss-cross ribs, such as figure 1 shown. Due to the above characteristics, traditional machining, welding, and casting processes are difficult to realize the forming of such components, and there are problems such as long cycle, high cost, and l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/15B22F5/00
CPCB22F3/15B22F5/00B22F2003/153
Inventor 徐桂华张海洋阴中炜
Owner AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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