A method for processing stainless steel capillary cores on heat pipe plates

A stainless steel, capillary core technology, applied in metal processing equipment, manufacturing tools, electron beam welding equipment, etc., can solve the problems of reducing the capillary effect of high temperature heat pipes, loss of capillary effect of capillary core, fusing, etc., and achieves a small welding heat affected area, Tight bonding and high welding quality

Active Publication Date: 2017-05-03
CHINA ACAD OF AEROSPACE AERODYNAMICS
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  • Abstract
  • Description
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Problems solved by technology

If the mechanical fixing method is adopted, the capillary core is easy to be displaced under the action of the temperature cycle during the use of the heat pipe and loses the capillary effect; at the same time, due to the porous structure of the stainless steel wire mesh, if the argon arc welding process is used, the stainless steel wire mesh is at the position of the solder joint. It is easy to produce fusing phenomenon, thereby reducing the capillary effect of high-temperature heat pipes

Method used

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  • A method for processing stainless steel capillary cores on heat pipe plates
  • A method for processing stainless steel capillary cores on heat pipe plates
  • A method for processing stainless steel capillary cores on heat pipe plates

Examples

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Embodiment

[0038] In order to illustrate the feasibility of this method, a 10mm thick copper plate T1 was used to process the copper template. The size of the copper template is 300×100mm. A number of through holes are processed on the copper template, each through hole is composed of a first round hole with a diameter of Φ2mm and a second round hole with a diameter of Φ1mm. Wherein, the depth of the second circular hole with a diameter of Φ1 mm is 3 mm. The through holes are arranged orthogonally, the distance between two adjacent through holes in the length direction of the template is 20 mm, and the distance between two adjacent through holes in the width direction of the template is 15 mm.

[0039] The plate is made of nickel-based superalloy, the grade is GH3044, and the thickness is 2.0mm. The specific processing process is as follows: (1) adopt the fastening structure in Fig. 2 to fix the 400-mesh stainless steel wire mesh on the GH3044 plate; (2) then place the workpiece to be ...

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Abstract

The invention discloses a method for machining stainless steel capillary cores on a heat pipe plate. The method includes the following steps that firstly, a red copper template is provided and provided with through holes; secondly, the template, a stainless steel screen and the plate are sequentially stacked, the portions, corresponding to the through holes, of the stainless steel screen are exposed outside, and the template, the stainless steel screen and the plate are fixed together, so that a workpiece to be welded is obtained; and thirdly, the workpiece to be welded is welded through electron beams and the portions, corresponding to the through holes, of the stainless steel screen are welded to the heat pipe plate. By the adoption of the method, an electron beam welding process is adopted for machining the stainless steel capillary cores and the welding heat influence region is small; and the stainless steel screen and the heat pipe plate are combined tightly and the capillary effect is good.

Description

technical field [0001] The invention belongs to the technical field of high-temperature heat pipes, and in particular relates to a method for processing stainless steel capillary cores on heat pipe plates. Background technique [0002] With the development of economy and society, high-temperature heat pipes have shown potential application prospects in super-combustion engines, aero engines, steam turbines, etc. Stainless steel wire mesh is one of the commonly used materials for capillary cores of high temperature heat pipes. The processing of stainless steel capillary core is a key step to realize high temperature heat pipe. [0003] In the preparation process of the capillary core, the stainless steel wire mesh is generally connected to the high-temperature heat pipe shell (nickel-based superalloy) by mechanical fixing or argon arc welding process. If the mechanical fixing method is adopted, the capillary core is easy to be displaced under the action of the temperature c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K15/06
CPCB23K15/0013B23K15/0046B23K15/06
Inventor 李炜胡龙飞陈思员罗晓光俞继军艾邦成
Owner CHINA ACAD OF AEROSPACE AERODYNAMICS
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