Hot isostatic pressure diffusion connection preparation method of heterogeneous composite component

A technology of hot isostatic pressure diffusion and composite components, which is applied in the direction of pump components, mechanical equipment, variable capacity pump components, etc., can solve the problem that the bonding strength cannot meet the use requirements, the expansion coefficient is very different, and the thermal stress bonding interface cracks and leaks and other issues, to achieve stable and reliable product quality, simplify the production process, and enhance the effect of bonding

Active Publication Date: 2016-12-07
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH +2
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

For this kind of composite structure, prefabricated ductile iron cylinder liners and stainless steel joints were used in the past, and aluminum alloy casting was used to prepare them after positioning. However, as the temperature dropped rapidly

Method used

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  • Hot isostatic pressure diffusion connection preparation method of heterogeneous composite component
  • Hot isostatic pressure diffusion connection preparation method of heterogeneous composite component

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preparation example Construction

[0038] The method for preparing the hot isostatic pressing diffusion connection of heterogeneous composite members of the present invention specifically includes the following steps:

[0039] Step (1), according to the shape and size of the composite component to be prepared, design and process the basic components that make up the composite component. The basic components include the shapes of the base blank 8, the insert 5, the cylinder liner blank 4 and the joint blank 7, and the base The blank 8, the insert 5, the cylinder liner blank 4 and the joint blank 7 are processed from at least two different metal materials, for example, the base blank 8 and the insert 5 are made of aluminum alloy, the cylinder liner blank 4 is made of ductile iron, and the joint blank 7 is made of stainless steel, preferably the base blank 8 and insert 5 are made of 5A06 aluminum alloy, the cylinder liner blank 4 is made of QT550 or QT550A ductile iron, and the joint blank 7 is made of 0Cr18Ni9 or ...

Embodiment 1

[0048] Take the manufacture of an aluminum-iron-steel composite member with a size of 180×180×100mm as an example, such as figure 1 Shown is a schematic diagram of the aluminum-iron-steel composite member in the embodiment of the present invention.

[0049] (a) Preparation of various components of the basic components and package components

[0050] Based on composite components (such as figure 1 ) Product shape and size, considering the subsequent machining allowance, processing the base blank 8, insert block 5, cylinder liner blank 4, joint blank 7 and other component blanks, hot isostatic pressing package components and pads 6. Among them, the matrix blank 8 is a rectangular structure, and the middle part reserves space for placing inserts 5, cylinder liner blanks 4, joint blanks 7 and other components. The insert 5 is a strip structure, and the cylinder liner blank 4 is a cylindrical structure, with joints reserved on one side The space for placing the blank 7, the joint...

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Abstract

The invention relates to a hot isostatic pressure diffusion connection preparation method of a heterogeneous composite component. The hot isostatic pressure diffusion connection preparation method of the heterogeneous composite component comprises the steps that (1) a base assembly containing a matrix blank, an insert, a cylinder sleeve blank and a connector blank is designed and machined according to the size of a final product; (2) a pure aluminum sheath assembly comprising a sheath, a sheath cover, a degassing pipe and a cushion block is designed and machined; (3) all the components are subjected to surface treatment; (4) the sheath assembly and the base assembly are assembled, the sheath cover and the sheath are welded, and the degassing pipe and the sheath cover are welded; (5) the interior of the sheath is vacuumized; (6) the sheath is subjected to hot isostatic pressure treatment; and (7) the sheath is removed, and the composite component product is obtained through machining. Mutual connection between at least two kinds of different metal materials is achieved through the heterogeneous metal hot isostatic pressure diffusion connection process, so that the composite component product is obtained, the heterogeneous metal connection interface is good in sealing performance, interface cracking caused by the linear expansion coefficient difference of a casting process is avoided, and the product is stable and reliable in quality.

Description

technical field [0001] The invention relates to a preparation method for hot isostatic pressure diffusion connection of heterogeneous composite components, in particular to a preparation method for hot isostatic pressure diffusion connection of aluminum-iron-steel composite components, and belongs to the technical field of heterogeneous metal diffusion connection. Background technique [0002] For a piston compressor, when the piston reciprocates in the cylinder, friction will inevitably occur between the cylinder and the cylinder, which requires the cylinder material to have good mechanical strength and wear resistance. On the other hand, for the compressed air used in the space station machine, which has special requirements for weight reduction, comprehensive consideration of material properties and operating conditions, a proposal of using nodular cast iron cylinder liner / stainless steel joint / aluminum alloy matrix composite structure base components, which requires nodul...

Claims

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Application Information

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IPC IPC(8): B23P15/00
CPCB23P15/00F04B39/12
Inventor 石刚史金靓王亮吴剑徐桂华
Owner AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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