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Brazing method for radiating pipes and middle diaphragm of tubular radiator

A brazing method and radiating pipe technology are applied in the field of stainless steel brazing, which can solve the problems of difficult assembly of the partition plate and the radiating pipe.

Active Publication Date: 2020-07-07
GUIZHOU YONGHONG AVIATION MACHINERY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above problems, the present invention aims to provide a remelting and brazing method for the partition plate and the heat dissipation tube in the tube radiator, so as to solve the problem of difficult assembly when the partition plate and the heat dissipation tube are brazed in the tube radiator

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  • Brazing method for radiating pipes and middle diaphragm of tubular radiator
  • Brazing method for radiating pipes and middle diaphragm of tubular radiator
  • Brazing method for radiating pipes and middle diaphragm of tubular radiator

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

[0025] A method for remelting and brazing a partition plate and a heat dissipation pipe in a tube radiator, comprising the following steps:

[0026] Step 1: Degrease and pickle the surface of the stainless steel plate, and then degrease the surface of the 0.03mm thick BNi82CrSiB amorphous solder 1 (foil strip). After the stainless steel plate is dried, press figure 1 and figure 2 After assembling with the brazing material foil (that is, laying the brazing material foil on the surface of the stainless steel plate), perform micro-melting brazing with the brazing material. The average heating rate before micro-melting brazing is 10°C / min, and the micro-melting brazing temperature is 980 ℃, holding time is 5min;

[0027] Step 2: Press image 3 The composite plate formed by micro-melting brazing is punched and machined to form the middle partition 2. ...

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Abstract

The invention discloses a brazing method for radiating pipes and a middle diaphragm of a tubular radiator. The brazing method comprises the steps that 1, a plurality of layers of BNi82CrSiB amorphousbrazing filler metal with the thickness of 0.03 mm are laid on the surface of a stainless steel plate, and the amorphous brazing filler metal are slightly melted in a vacuum brazing furnace with the brazing parameters in which the temperature is 980 DEG C and the insulation time is 5 min; 2, a composite plate formed by slight-melting brazing is machined through a perforating machine to form the middle diaphragm, wherein it is guaranteed that the pore diameter of the middle diaphragm is larger than the outer diameter of the radiating pipes, that is, the brazing gap is within the range of 0.04 mm to 0.08 mm; 3, the radiating pipes are assembled into holes of the middle diaphragm; and 4, an assembly part is placed in the vacuum brazing furnace, and re-melting brazing is conducted for 10 min at the temperature of 1070 DEG C. According to the brazing method, the problem that after the multiple radiating pipes and the diaphragm are assembled, paste brazing filler metal is difficult to coat is solved.

Description

technical field [0001] The invention relates to the technical field of stainless steel brazing, in particular to a method for remelting and brazing a partition plate and a cooling pipe in a tube radiator. Background technique [0002] The inside of the tube of the stainless steel tubular radiator is a fuel chamber, and the outside of the pipe is an oil chamber, and the lubricating oil chamber is separated by a plurality of middle partitions to separate the lubricating oil flow channel to dissipate heat from the heat pipe. Usually, the partition plate and the heat dissipation pipe are only in an assembled state, and lubricating oil will flow through the assembly gap between the partition plate and the heat dissipation pipe, which reduces the heat dissipation efficiency of the heat dissipation pipe. In order to improve the heat dissipation efficiency of the fuel oil of the tube radiator, if a paste brazing material is used to coat the middle partition for brazing, since the he...

Claims

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Application Information

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IPC IPC(8): B23K1/20B23K1/008B23K1/00
CPCB23K1/0008B23K1/008B23K1/20
Inventor 吴长洪卓著龙本滔张邦
Owner GUIZHOU YONGHONG AVIATION MACHINERY
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