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Preparing method capable of reducing weld joints of hot isostatic pressure package sheathing

A technology of hot isostatic pressing and sheathing, which is applied in the direction of manufacturing tools, casting molding equipment, metal processing equipment, etc., can solve the problems of leakage and more welding seams of sheathing, so as to prevent air leakage, reduce weld seams, and improve production efficiency effect

Active Publication Date: 2020-01-24
SINO EURO MATERIALS TECH OF XIAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a preparation method for reducing hot isostatic pressure sheathed welds, which solves the problem that there are many sheathed welds in the prior art and are prone to leakage

Method used

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  • Preparing method capable of reducing weld joints of hot isostatic pressure package sheathing

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preparation example Construction

[0023] A method for the preparation of reduced hot isostatic pressure sheathed welds, such as figure 1 As shown, follow the steps below:

[0024] Step 1: Design and make the casting wax mold of the sheath according to the structural characteristics of the sheath, put the prepared wax mold into the ceramic slurry, make the ceramic slurry cover the surface of the wax mold, then take out the wax mold to air dry, repeat for many times , until the surface of the wax pattern is evenly coated with a ceramic layer;

[0025] Step 2, after the ceramic layer is hardened, put the wax mold with the ceramic layer into hot water, after the wax mold melts, pour out the liquid wax to obtain a ceramic mold;

[0026] Step 3, casting the molten metal into the ceramic mold cavity, filling the ceramic mold cavity with the molten metal, and performing casting molding, so that the metal is cooled and crystallized into a solid form, and a sheath containing the ceramic mold is obtained;

[0027] Step...

Embodiment 1

[0038] A preparation method for reducing hot isostatic pressing sheath welds, specifically carried out according to the following steps:

[0039] Step 1. Design and make a casting wax mold for the jacket according to the structural characteristics of the jacket. The thickness of the wax mold is 8mm. Put the prepared wax mold into the ceramic slurry so that the ceramic slurry covers the surface of the wax mold, and then remove the wax mold. Air-dry and repeat several times until the surface of the wax mold is evenly coated with a ceramic layer, and the thickness of the ceramic layer is 1.5mm;

[0040] Step 2, after the ceramic layer is hardened, put the wax mold with the ceramic layer in 100°C hot water, after the wax mold melts, pour out the liquid wax to obtain a ceramic mold;

[0041] Step 3, casting the molten metal into the ceramic mold cavity, filling the ceramic mold cavity with the molten metal, and performing casting molding, so that the metal is cooled and crystallize...

Embodiment 2

[0045] A preparation method for reducing hot isostatic pressing sheath welds, specifically carried out according to the following steps:

[0046] Step 1: Design and make a casting wax mold of the sheath according to the structural characteristics of the sheath. The thickness of the wax mold is 7.5mm. Put the prepared wax mold into the ceramic slurry so that the ceramic slurry covers the surface of the wax mold, and then put the wax mold Take it out and air-dry it, and repeat it several times until the surface of the wax mold is evenly coated with a ceramic layer, and the thickness of the ceramic layer is 2mm;

[0047] Step 2, after the ceramic layer is hardened, put the wax mold with the ceramic layer in 80°C hot water, after the wax mold melts, pour out the liquid wax to obtain a ceramic mold;

[0048] Step 3, casting the molten metal into the ceramic mold cavity, filling the ceramic mold cavity with the molten metal, and performing casting molding, so that the metal is coole...

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Abstract

The invention discloses a preparing method capable of reducing sheathing weld joints of a hot isostatic pressure package sheathing. The preparing method specifically comprises the following steps of 1, designing and manufacturing a package sheathing casting wax mould according to the structural features of the package sheathing, and uniformly smearing a ceramic layer on the surface of the wax mould; 2, after the ceramic layer is hardened, putting the wax mould into hot water to be removed after fusion, and then obtaining a ceramic section mould; 3, casting fused metal into a ceramic section mould cavity for casting moulding to obtain the package sheathing containing the ceramic section mould; 4, removing the ceramic section mould on the surface of the package sheathing to obtain a cast package sheathing; 5, conducting hot isostatic pressure treatment on the cast package sheathing to obtain a finished package sheathing product. By means of the preparing method, the weld joints of the finished package sheathing product can be effectively reduced, so that the rate of the finished hot isostatic pressure package sheathing product is greatly increased, the reliability of the hot isostatic pressure process is guaranteed, and the production efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of hot isostatic pressing, and relates to a preparation method for reducing hot isostatic pressing cladding welds. Background technique [0002] Hot isostatic pressing technology is a process technology that uses high temperature and high pressure environment to form metal powder or parts. When hot isostatic pressing is performed on metal powder, the metal powder must be packed into the package to carry out the hot isostatic pressing process. In this process, there are strict requirements on the airtightness of the package. [0003] Therefore, hot isostatic pressing is the most important link in the process of hot isostatic pressing. At present, most of the production of hot isostatic pressing is done by machining and welding, which has high labor intensity and affects the quality of welding. The requirements are relatively high. For more complex sheaths, this method has more welds, difficult processing, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/24B22C9/04
CPCB22C9/04B22C9/24
Inventor 罗成瞿宗宏宋嘉明白瑞敏郑作赟何山赖运金王庆相梁书锦
Owner SINO EURO MATERIALS TECH OF XIAN CO LTD