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Manufacturing method of heat exchanger based on combination of vacuum hot melting and explosion cladding

A manufacturing method and heat exchanger technology, which are applied in the field of heat exchangers, can solve problems such as heat exchangers that have not yet been consulted, and achieve the effects of low cost, stable operation, and guaranteed sealing.

Pending Publication Date: 2018-06-12
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the published documents, patents, and materials, no heat exchanger made by this method has been found.

Method used

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  • Manufacturing method of heat exchanger based on combination of vacuum hot melting and explosion cladding
  • Manufacturing method of heat exchanger based on combination of vacuum hot melting and explosion cladding
  • Manufacturing method of heat exchanger based on combination of vacuum hot melting and explosion cladding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Step (1) see figure 1 Customized slotted tungsten plate, which can be micro-machined according to the needs of the slot type;

[0046] Step (2) Polish the front and back of the tungsten plate and its surroundings with sandpaper to make the surface of the tungsten plate smooth and smooth, then scrub the groove surface with alcohol, and then put the tungsten plate into a special mold, such as figure 2 ;

[0047] Step (3) preset the stainless steel tube on the tungsten plate;

[0048] Step (4) Put the copper block (copper plate) in the mold, that is, on the tungsten plate and the stainless steel tube, and put them into the high-temperature furnace together;

[0049]Step (5) Start the vacuum high-temperature furnace and heat it to between 1083.4°C and 1300°C. The copper is fully melted, but the stainless steel tube and tungsten are not melted. Part of the molten copper flows into the tungsten tank, and at the same time immerses the stainless steel pipe. Under the therma...

Embodiment 2

[0055] Step (1) see figure 1 Customized slotted tungsten plate, which can be micro-machined according to the needs of the slot type;

[0056] Step (2) Polish the front and back of the tungsten plate and its surroundings with sandpaper to make the surface of the tungsten plate smooth and smooth, then scrub the groove surface with alcohol, and then put the tungsten plate into a special mold, such as figure 2 ;

[0057] Step (3) preset the stainless steel tube on the tungsten plate at a certain distance, such as figure 2 ;

[0058] Step (4) Put the copper block (copper plate) in a special high-temperature-resistant container, start the high-temperature furnace, and heat until the copper is fully melted;

[0059] Step (5) Take out the container containing the copper liquid from the high-temperature furnace with special equipment, and immediately cast it on the tungsten plate. The copper liquid fully flows into the groove gap of the tungsten plate. , to achieve the initial co...

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Abstract

The invention discloses a manufacturing method of a heat exchanger based on combination of vacuum hot melting and explosion cladding. The method comprises the steps that a tungsten plate with a certain groove profile is selected to be used as a substrate, and micro-machining is carried out on the groove profile according to requirements; the interface of the tungsten plate is cleaned up, a stainless steel pipe is preset at a certain position of the tungsten plate, and the tungsten plate is placed in a specially-made mold; a copper block or a copper plate used for covering the plate is placed on the tungsten plate and the stainless steel pipe, the copper block or copper plate, the tungsten plate and the stainless steel pipe are put into a vacuum high-temperature furnace together, when the temperature is heated to 1083.4 DEG C-1300 DEG C, copper is fully melted, while both the stainless steel pipe and tungsten are not melted; part of the molten copper flows into the tungsten groove, thestainless steel pipe is immersed at the same time, and under the mechanical action of the high-temperature liquid and the mechanical action of the groove profile, preliminary compositing of cover plate copper and substrate tungsten is achieved; the material is taken out from the vacuum high-temperature furnace after cooling; the stainless steel pipe is removed according to the size of the preset stainless steel pipe, and a heat exchange channel of the heat exchanger is formed; and hole expansion is carried out by using an explosive cladding method, and explosion fiber is inserted into the channel for explosion so as to enable the copper to be tightly cooperated with the tungsten.

Description

technical field [0001] The invention relates to the technical field of heat exchangers, in particular to a method for manufacturing a heat exchanger based on the combination of vacuum hot melting and explosive compounding. Background technique [0002] A heat exchanger is a device that realizes heat transfer between two or more fluids at different temperatures. It transfers heat from a higher fluid to a lower temperature fluid, so that the fluid temperature reaches the specified value of the process. Indicators to meet the needs of process conditions, but also one of the main equipment to improve energy efficiency. The heat exchanger industry involves nearly 30 industries such as HVAC, pressure vessels, and reclaimed water treatment equipment, forming an industrial chain with each other. [0003] Tungsten is a non-ferrous metal. The strength and hardness of non-ferrous alloys are generally higher than those of pure metals, their resistance is higher than that of pure metal...

Claims

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Application Information

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IPC IPC(8): B22D19/16B21D26/08
CPCB21D26/08B22D19/16
Inventor 马宏昊孙玉玲姚达毛李磊沈兆武杨明周国安马瑞杰
Owner UNIV OF SCI & TECH OF CHINA
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