CN105750675A - Titanium alloy heat exchanger vacuum soldering technology - Google Patents
Titanium alloy heat exchanger vacuum soldering technology Download PDFInfo
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- CN105750675A CN105750675A CN201410769552.9A CN201410769552A CN105750675A CN 105750675 A CN105750675 A CN 105750675A CN 201410769552 A CN201410769552 A CN 201410769552A CN 105750675 A CN105750675 A CN 105750675A
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- vacuum brazing
- warming
- vacuum soldering
- heat exchanger
- vacuum
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Abstract
A titanium alloy heat exchanger vacuum soldering technology comprises steps of (1) preparing before welding, including removing oxide skin on surfaces of a work piece and a clamp and removing oil and cleaning, (2), assembling the work piece, (3) placing the well-assembled work piece into a rail-free hydraulic cart and then sending the same into a vacuum soldering furnace, (4) vacuumizing in the vacuum soldering furnace at the room temperature, (5) heating the vacuum soldering furnace to the temperature of 850 to 1000 DEG C at speed of 3 to 8 DEG C/min in a quick way, (6) warming the vacuum soldering furnace for 40 to 50 minutes, (7) heating the vacuum soldering furnace to the temperature of 1100 to 1200 DEG C at speed of 2 to 5 DEG C/min, (8) warming for 15 to 20 mins at the soldering temperature, (9) cooling the vacuum soldering furnace to 500 DEG C, (10) warming the same for 8 to 10 mins, (11) cooling the same to temperature under 100 DEG C, and (12) heating the vacuum soldering furnace to 900 DEG C at speed of 3 to 8/min, then cooling the same under 100 DEG C and taking the work piece out after opening the furnace. The technology is simple and convenient.
Description
Technical field
The present invention relates to technical field of heat exchangers, especially a kind of titanium alloy heat exchanger vacuum brazing technique.
Background technology
Heat exchanger, also known as heat exchanger, passes to the device of another kind of heat-carrying agent by heat from a kind of heat-carrying agent.In industrial processes, it is often necessary to be heated or cooled, i.e. the transmission of heat.When a kind of fluid carries out heat exchange with one other fluid and does not allows to mix, it is desirable to carry out in recuperative heat exchanger, be applied to the industries such as chemical industry, oil, power, food.The Main Function of heat exchanger is thermal energy exchange between cold fluid and hot fluid.
Heat exchanger of the prior art, needs to weld in the course of processing, uses conventional welding processes easy damaged heat exchanger parts, affects crudy.
Summary of the invention
The applicant is for the shortcoming in above-mentioned existing production technology, it is provided that a kind of titanium alloy heat exchanger vacuum brazing technique, thus ensures crudy, increases the service life.
The technical solution adopted in the present invention is as follows:
A kind of titanium alloy heat exchanger vacuum brazing technique, including following operating procedure:
The first step: prepare before weldering, removes workpiece and the oxide skin of chucking surface and oil removing is cleaned；
Second step: workpiece is assembled；
3rd step: the workpiece assembled is put into trackless hydraulic pressure truck, is then sent in vacuum brazing furnace；
4th step: at room temperature, vacuum brazing furnace carries out evacuation；
5th step: vacuum brazing furnace is warming up to 850 DEG C-1000 DEG C with the speed of 3-8 DEG C/min；
6th step: carry out vacuum brazing furnace being incubated 40min-50min；
7th step: be warming up to 1100 DEG C-1200 DEG C with the speed of 2-5 DEG C/min the most again
8th step: be incubated 15min-20min under brazing temperature；
9th step: be cooled to 500 DEG C；
Tenth step: insulation 8min-10min；
11st step: be cooled to less than 100 DEG C；
12nd step: be warming up to 900 DEG C with the speed of 3-8 DEG C/min again, then rapid cooling, be cooled to less than 100 DEG C, and workpiece is taken out in blow-on；
13rd step: cleaning solder droplet and accumulation.
Further improvement as technique scheme:
In 4th step, the vacuum in vacuum brazing furnace is less than 3X10-3Pa。
Beneficial effects of the present invention is as follows:
Present invention process process operation is easy, in heating process, part is in vacuum atmosphere, do not have the phenomenons such as oxidation, carburetting, decarburization, contamination and deterioration, part entirety is heated, and thermal stress is little, there is low pressure around base metal and solder, volatile impurity and gas that metal discharges under brazing temperature, mother metal and brazed seam performance can be got rid of and obtain improvement；Vacuum brazing does not use brazing flux, does not haves pore, dreg defect, and soldered fitting light is fine and close, high comprehensive performance.
Detailed description of the invention
The detailed description of the invention of the present invention is described below.
The titanium alloy heat exchanger vacuum brazing technique of the present embodiment, including following operating procedure:
The first step: prepare before weldering, removes workpiece and the oxide skin of chucking surface and oil removing is cleaned；
Second step: workpiece is assembled；
3rd step: the workpiece assembled is put into trackless hydraulic pressure truck, is then sent in vacuum brazing furnace；
4th step: at room temperature, vacuum brazing furnace carries out evacuation；
5th step: vacuum brazing furnace is warming up to 850 DEG C-1000 DEG C with the speed of 3-8 DEG C/min；
6th step: carry out vacuum brazing furnace being incubated 40min-50min；
7th step: be warming up to 1100 DEG C-1200 DEG C with the speed of 2-5 DEG C/min the most again
8th step: be incubated 15min-20min under brazing temperature；
9th step: be cooled to 500 DEG C；
Tenth step: insulation 8min-10min；
11st step: be cooled to less than 100 DEG C；
12nd step: be warming up to 900 DEG C with the speed of 3-8 DEG C/min again, then rapid cooling, be cooled to less than 100 DEG C, and workpiece is taken out in blow-on；
13rd step: cleaning solder droplet and accumulation.
In 4th step, the vacuum in vacuum brazing furnace is less than 3X10-3Pa。
Embodiment one:
Titanium alloy heat exchanger vacuum brazing technique, processes heat exchanger core body, including following operating procedure:
The first step: prepare before weldering, removes core body and the oxide skin of chucking surface and oil removing is cleaned；
Second step: core body is assembled；
3rd step: the core body assembled is put into trackless hydraulic pressure truck, is then sent in vacuum brazing furnace；
4th step: at room temperature, vacuum brazing furnace carries out evacuation, and vacuum is 2X10-3Pa；
5th step: vacuum brazing furnace is warming up to 850 DEG C-1000 DEG C with the speed of 5 DEG C/min；
6th step: carry out vacuum brazing furnace being incubated 40min；
7th step: be warming up to 1100 DEG C-1200 DEG C with the speed of 3 DEG C/min the most again
8th step: be incubated 15min under brazing temperature；
9th step: be cooled to 500 DEG C；
Tenth step: insulation 9min；
11st step: be cooled to less than 100 DEG C；
12nd step: be warming up to 900 DEG C with the speed of 4 DEG C/min again, then rapid cooling, be cooled to less than 100 DEG C, and workpiece is taken out in blow-on；
13rd step: cleaning solder droplet and accumulation.
Above description is explanation of the invention, is not the restriction to invention, and limited range of the present invention sees claim, within protection scope of the present invention, can make any type of amendment.
Claims (2)
1. a titanium alloy heat exchanger vacuum brazing technique, it is characterised in that: include following operating procedure:
The first step: prepare before weldering, removes workpiece and the oxide skin of chucking surface and oil removing is cleaned；
Second step: workpiece is assembled；
3rd step: the workpiece assembled is put into trackless hydraulic pressure truck, is then sent in vacuum brazing furnace；
4th step: at room temperature, vacuum brazing furnace carries out evacuation；
5th step: vacuum brazing furnace is warming up to 850 DEG C-1000 DEG C with the speed of 3-8 DEG C/min；
6th step: carry out vacuum brazing furnace being incubated 40min-50min；
7th step: be warming up to 1100 DEG C-1200 DEG C with the speed of 2-5 DEG C/min the most again；
8th step: be incubated 15min-20min under brazing temperature；
9th step: be cooled to 500 DEG C；
Tenth step: insulation 8min-10min；
11st step: be cooled to less than 100 DEG C；
12nd step: be warming up to 900 DEG C with the speed of 3-8 DEG C/min again, then rapid cooling, be cooled to less than 100 DEG C, and workpiece is taken out in blow-on；
13rd step: cleaning solder droplet and accumulation.
2. titanium alloy heat exchanger vacuum brazing technique as claimed in claim 1, it is characterised in that: in the 4th step, the vacuum in vacuum brazing furnace is less than 3X10-3Pa。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410769552.9A CN105750675A (en) | 2014-12-15 | 2014-12-15 | Titanium alloy heat exchanger vacuum soldering technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410769552.9A CN105750675A (en) | 2014-12-15 | 2014-12-15 | Titanium alloy heat exchanger vacuum soldering technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105750675A true CN105750675A (en) | 2016-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410769552.9A Withdrawn CN105750675A (en) | 2014-12-15 | 2014-12-15 | Titanium alloy heat exchanger vacuum soldering technology |
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| CN (1) | CN105750675A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111451593A (en) * | 2020-04-08 | 2020-07-28 | 无锡市普尔换热器制造有限公司 | Technology for effectively controlling core deformation of light titanium alloy plate-fin heat exchanger |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1937367A (en) * | 2006-09-30 | 2007-03-28 | 山东齐鲁电机制造有限公司 | Air-cooled steam turbine generator stator lead-out wire vacuum soldering process |
| CN101391329A (en) * | 2008-11-05 | 2009-03-25 | 南京工业大学 | Vacuum brazing technique of stainless steel plate fin structure |
| CN101623785A (en) * | 2008-07-08 | 2010-01-13 | 中国科学院金属研究所 | Method for brazing compact efficient titanium alloy plate-fin heat exchanger |
| CN101972877A (en) * | 2010-11-03 | 2011-02-16 | 哈尔滨工业大学 | Contact reaction brazing connection method for TiAl based alloy and Ni based high-temperature alloy |
| CN103056468A (en) * | 2013-01-04 | 2013-04-24 | 昆山众备机械设备有限公司 | Method for brazing in vacuum state |
-
2014
- 2014-12-15 CN CN201410769552.9A patent/CN105750675A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1937367A (en) * | 2006-09-30 | 2007-03-28 | 山东齐鲁电机制造有限公司 | Air-cooled steam turbine generator stator lead-out wire vacuum soldering process |
| CN101623785A (en) * | 2008-07-08 | 2010-01-13 | 中国科学院金属研究所 | Method for brazing compact efficient titanium alloy plate-fin heat exchanger |
| CN101391329A (en) * | 2008-11-05 | 2009-03-25 | 南京工业大学 | Vacuum brazing technique of stainless steel plate fin structure |
| CN101972877A (en) * | 2010-11-03 | 2011-02-16 | 哈尔滨工业大学 | Contact reaction brazing connection method for TiAl based alloy and Ni based high-temperature alloy |
| CN103056468A (en) * | 2013-01-04 | 2013-04-24 | 昆山众备机械设备有限公司 | Method for brazing in vacuum state |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111451593A (en) * | 2020-04-08 | 2020-07-28 | 无锡市普尔换热器制造有限公司 | Technology for effectively controlling core deformation of light titanium alloy plate-fin heat exchanger |
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Application publication date: 20160713 |
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