A kind of intermediate frequency multi-stage heating packaging method for vacuum sheathed tube
A packaging method and multi-stage heating technology, which are applied in metal processing equipment, welding equipment, manufacturing tools, etc., can solve the problems of low production efficiency, high cost, inability to detect leakage of casing and casing, and achieve high production efficiency and low cost. , Guarantee the effect of clamping quality
Active Publication Date: 2020-08-21
SOUTHWESTERN INST OF PHYSICS
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Problems solved by technology
[0003] The technical problem to be solved in the present invention is: the sealing and welding of the metal sheath of the existing hot isostatic pressing process needs to be carried out in a vacuum degassing furnace, the production efficiency is low, the cost is high, and it is impossible to detect whether the sheathing tube is leaking when the sealing and welding is completed. gas
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[0021] The method for encapsulating the vacuum sheathed tube with intermediate frequency multi-stage heating of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0022] The packaging method for vacuum sheathed tube intermediate frequency multi-stage heating of the present invention specifically includes the following steps:
[0023] Step 1, wrapping pipeline pretreatment;
[0024] Use gasoline to remove oil stains inside and outside the jacketed pipe, then use acetone to dehydrate the jacketed pipe ultrasonically, and finally put the jacket together with the jacketed pipe in a vacuum oven for degassing.
[0025] Step 2. Install and fix the sheath and sheathed pipes on the electric platform with fixtures, and place the sheathed pipes at the appropriate position of the intermediate frequency heater, such as figure 1 shown. The intermediate frequency heater is an intermediate frequency induction coil, and th...
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The invention belongs to the technical field of hot isostatic pressing welding, and particularly relates to a medium frequency multi-section heating and packaging method of a vacuum canning tube. Themedium frequency multi-section heating and packaging method of the vacuum canning tube comprises the following steps of canning tube pretreatment, specifically, a canning and a canning tube are mounted and fixed on an electric platform by using a fixture, the canning tube is connected to a gas pumping system, and the gas pumping system continuously exhausts gas, so that the vacuum degree in the canning tube is lower than 9E-5Pa; sectional clamping for sealing and retesting; clamping for breaking; and sealing by welding. By means of the medium frequency multi-section heating and packaging method, the technical problems that sealing by welding of an existing hot isostatic pressing process metal canning needs to be conducted in a vacuum degassing furnace, the production efficiency is low, thecost is high, and whether the canning tube leaks or not cannot be detected after sealing by welding is completed are solved, the medium frequency multi-section heating and packaging method of the vacuum canning tube does not need to be conducted in the vacuum degassing furnace, the production efficiency is high, the cost is low, the quality of clamping for sealing is ensured by detecting the vacuum degree, and the canning after clamping for sealing can withstand working condition inspection of vacuum inside the canning and high pressure and high temperature outside the canning during hot isostatic pressing.
Description
technical field [0001] The invention belongs to the technical field of hot isostatic pressure welding, and in particular relates to an intermediate frequency multi-stage heating packaging method for a vacuum sheathed tube. Background technique [0002] The metal-clad tube used in the hot isostatic pressing preparation process needs to be sealed and welded. In the prior art, the sealing and welding is mainly carried out in a vacuum degassing furnace, and the cladding tube is placed in the vacuum degassing furnace. After the furnace reaches a relatively high degree of vacuum, vacuum electron beam welding or other welding techniques are used to seal the sheath. Whether there is air leakage in the casing when welding is completed. Contents of the invention [0003] The technical problem to be solved by the present invention is: the sealing and welding of the metal sheath of the existing hot isostatic pressing process needs to be carried out in a vacuum degassing furnace, the ...
Claims
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IPC IPC(8): B23K1/002B23K1/20
CPCB23K1/002B23K1/20
Inventor 王金王平怀谌继明朱小波朱明赵云华金凡亚
Owner SOUTHWESTERN INST OF PHYSICS