CN111761156A - Brazing method for large computer radiator - Google Patents
Brazing method for large computer radiator Download PDFInfo
- Publication number
- CN111761156A CN111761156A CN202010711913.XA CN202010711913A CN111761156A CN 111761156 A CN111761156 A CN 111761156A CN 202010711913 A CN202010711913 A CN 202010711913A CN 111761156 A CN111761156 A CN 111761156A
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- CN
- China
- Prior art keywords
- brazing
- radiating
- radiator
- furnace
- brazing furnace
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/008—Soldering within a furnace
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/20—Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
- B23K1/203—Fluxing, i.e. applying flux onto surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/20—Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
- B23K1/206—Cleaning
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention provides a brazing method of a large computer radiator, and relates to the technical field of brazing. The brazing method of the large computer radiator comprises the following steps: s1, preparing a radiating pipe and a radiating fin, and cleaning and deoiling a joint of the radiating pipe and the radiating fin; s2, coating soldering paste on the joint of the radiating pipe and the radiating fin; s3, continuously heating the brazing furnace, and introducing ammonia gas and nitrogen gas into the brazing furnace when the temperature in the brazing furnace is increased to 900 ℃; s4, placing the radiating pipe and the radiating fins on a graphite boat according to the connecting positions; s5, placing the graphite boat on a mesh belt of a brazing furnace, and conveying the graphite boat to the inner end of the brazing furnace through the mesh belt for brazing. The invention provides a brazing method of a large computer radiator, which does not need to control the temperature accurately when brazing the radiator, can greatly accelerate the brazing speed and the welding strength, greatly improves the production efficiency and is suitable for mass production.
Description
Technical Field
The invention relates to the technical field of brazing, in particular to a brazing method of a large computer radiator.
Background
The existing radiator production technology is difficult to meet the technical requirements of a cooling system, so the radiator material, the welding material and the welding technology are the focus of research. The radiator is composed of a radiating pipe, radiating fins and a core bracket for supporting a main fin, and a high-strength radiator can be manufactured by adopting a copper brazing technology.
Brazing, which is a welding method that after brazing filler metal lower than the melting point of a weldment and the weldment are heated to the melting temperature of the brazing filler metal at the same time, the liquid brazing filler metal is used for filling the gaps of solid workpieces to connect the metals. During brazing, an oxide film and oil stains on a contact surface of a base material are removed firstly, so that a capillary tube can play a role after the brazing filler metal is melted, and the wettability and the capillary fluidity of the brazing filler metal are improved. Brazing is divided into brazing and soldering according to the melting point of the brazing filler metal.
The brazing deformation is small, the joint is smooth and attractive, and the method is suitable for welding components which are precise, complex and composed of different materials, such as honeycomb structural plates, turbine blades, hard alloy cutters, printed circuit boards and the like. Before brazing, the workpiece must be carefully processed and strictly cleaned to remove oil stains and an excessively thick oxidation film, so that the assembly gap of the interface is ensured. The gap is generally required to be between 0.01 and 0.1 mm in the brazing method of the large computer radiator.
The prior radiator brazing technology welds a radiating pipe, a radiating fin and a supporting main fin at high temperature, usually the welding temperature is 600 ℃, but the welding strength of the radiator welded by the technology is not high enough to meet the use requirement of some situations, so the prior brazing technology needs to be improved.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a brazing method of a large computer radiator, and solves the problem that the connection strength of the radiator welded by the prior brazing technology cannot meet the use requirement.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the brazing method of the large computer radiator comprises the following steps:
s1, preparing a radiating pipe and a radiating fin, and cleaning and deoiling a joint of the radiating pipe and the radiating fin;
s2, coating soldering paste on the joint of the radiating pipe and the radiating fin;
s3, continuously heating the brazing furnace, and introducing ammonia gas and nitrogen gas into the brazing furnace when the temperature in the brazing furnace is increased to 900 ℃;
s4, placing the radiating pipe and the radiating fins on a graphite boat according to the connecting positions;
s5, placing the graphite boat on a mesh belt of a brazing furnace, and conveying the graphite boat to the inner end of the brazing furnace through the mesh belt for brazing.
Preferably, the radiating pipe and the radiating fins are made of pure copper materials.
Preferably, the brazing furnace is a mesh belt type brazing furnace, and the mesh belt is changed into a 304 stainless steel belt.
Preferably, the solder paste consists of copper, zinc and tin, and the composition ratio of the three materials is 50% of copper, 30% of zinc and 20% of tin.
Preferably, the composition of ammonia and nitrogen in step S3 is 70% ammonia and 30% nitrogen.
Preferably, the transmission speed of the brazing furnace mesh belt in the step S5 is 5 m/S.
(III) advantageous effects
The invention provides a brazing method of a large computer radiator. The method has the following beneficial effects:
by the brazing method designed by the invention, the brazing of the radiator is not required to be accurately controlled, all the components can be easily realized in a short time, the welding strength is greatly improved, the production rate is also greatly improved, and the method is suitable for mass production.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
the embodiment of the invention provides a brazing method of a large computer radiator, which comprises the following steps:
s1, preparing a radiating pipe and a radiating fin, cleaning and deoiling the joint of the radiating pipe and the radiating fin, wherein the radiating pipe and the radiating fin are made of pure copper materials, the melting point of the pure copper is 1083 ℃, and the pure copper materials cannot be melted when being welded at a high temperature higher than 600 ℃, so that the temperature does not need to be accurately controlled when the radiating pipe and the radiating fin are brazed;
s2, coating soldering paste on the joint of the radiating pipe and the radiating fin, wherein the soldering paste consists of copper, zinc and tin, and the three materials comprise 50% of copper, 30% of zinc and 20% of tin in percentage by weight;
s3, continuously heating a brazing furnace, wherein the brazing furnace is a mesh belt type brazing furnace, a 304 stainless steel strip is changed from a mesh belt, ammonia and nitrogen are introduced into the brazing furnace when the temperature in the brazing furnace rises to 900 ℃, and the ammonia and the nitrogen comprise 70% of ammonia and 30% of nitrogen;
s4, placing the radiating pipe and the radiating fins on a graphite boat according to the connecting positions;
s5, the graphite boat is placed on a steel strip of the brazing furnace, the transmission speed of the steel strip of the brazing furnace is 5m/s, the graphite boat is conveyed to the inner end of the brazing furnace through the steel strip to be brazed, the temperature in the furnace is 900 ℃, the radiating pipe and the radiating fin cannot be melted, the soldering paste can be melted rapidly and completely, and the welding strength and the welding speed are greatly improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The brazing method of the large computer radiator is characterized in that: the method comprises the following steps:
s1, preparing a radiating pipe and a radiating fin, and cleaning and deoiling a joint of the radiating pipe and the radiating fin;
s2, coating soldering paste on the joint of the radiating pipe and the radiating fin;
s3, continuously heating the brazing furnace, and introducing ammonia gas and nitrogen gas into the brazing furnace when the temperature in the brazing furnace is increased to 900 ℃;
s4, placing the radiating pipe and the radiating fins on a graphite boat according to the connecting positions;
s5, placing the graphite boat on a mesh belt of a brazing furnace, and conveying the graphite boat to the inner end of the brazing furnace through the mesh belt for brazing;
2. the brazing method for a radiator of a mainframe computer according to claim 1, wherein: the radiating pipe and the radiating fins are made of pure copper materials.
3. The brazing method for a radiator of a mainframe computer according to claim 1, wherein: the brazing furnace is a mesh belt type brazing furnace, and a 304 stainless steel belt is changed from a mesh belt.
4. The brazing method for a radiator of a mainframe computer according to claim 1, wherein: the soldering paste consists of copper, zinc and tin, and the composition of the three materials is 50% of copper, 30% of zinc and 20% of tin.
5. The brazing method for a radiator of a mainframe computer according to claim 1, wherein: the composition of the ammonia gas and the nitrogen gas in the step S3 accounts for 70% of the ammonia gas and 30% of the nitrogen gas.
6. The brazing method for a radiator of a mainframe computer according to claim 1, wherein: the transmission speed of the brazing furnace mesh belt in the step S5 is 5 m/S.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010711913.XA CN111761156A (en) | 2020-07-22 | 2020-07-22 | Brazing method for large computer radiator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010711913.XA CN111761156A (en) | 2020-07-22 | 2020-07-22 | Brazing method for large computer radiator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111761156A true CN111761156A (en) | 2020-10-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010711913.XA Pending CN111761156A (en) | 2020-07-22 | 2020-07-22 | Brazing method for large computer radiator |
Country Status (1)
| Country | Link |
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| CN (1) | CN111761156A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112809117A (en) * | 2021-03-02 | 2021-05-18 | 辽宁东升精机有限公司 | Brazing process for core seal of seal type radiator |
| CN114571196A (en) * | 2022-05-06 | 2022-06-03 | 新乡市杰达精密电子器件有限公司 | Production process of membrane heater with hot water and steam dual-purpose function |
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| DD239366A1 (en) * | 1985-07-19 | 1986-09-24 | Zentralinstitut Schweiss | LOW-MELTING SILVER-FREE LOTTERY MATERIALS FOR HARD-LOADING COLORED METALS AND IRON MATERIALS |
| CN1064636A (en) * | 1991-03-14 | 1992-09-23 | 中国有色金属工业总公司昆明贵金属研究所 | The method for welding of copper base soldering paste and copper-made ornament |
| JP2005028412A (en) * | 2003-07-07 | 2005-02-03 | Denso Corp | Brazing method |
| US20050029242A1 (en) * | 2001-11-22 | 2005-02-10 | Christian Bonnet | Brazed copper heat exchangers and method for making same by welding |
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| KR20110045477A (en) * | 2009-10-27 | 2011-05-04 | 김문숙 | powder composition for welding metal wire for accessory |
| CN202447776U (en) * | 2011-12-20 | 2012-09-26 | 南京长宏电炉有限责任公司 | Mesh belt type protective atmosphere brazing furnace |
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| CN104353939A (en) * | 2014-11-17 | 2015-02-18 | 安徽瑞研新材料技术研究院有限公司 | Novel lead-free copper alloy new material and processing technology thereof |
| CN104942473A (en) * | 2013-01-16 | 2015-09-30 | 苏州金仓合金新材料有限公司 | Environment-protecting tin zinc manganese copper alloy new material for welding and preparing method thereof |
| CN205166094U (en) * | 2015-04-22 | 2016-04-20 | 十堰车驰工贸有限公司 | Burning furnace is baked over a slow fire to copper radiator solder brazing chain belt |
| KR101646484B1 (en) * | 2016-01-15 | 2016-08-09 | 지에이씨피 주식회사 | Plate Heat Exchangers having copper connectors's manufacturing method |
| CN106238962A (en) * | 2016-08-30 | 2016-12-21 | 郑州机械研究所 | A kind of active solder alloy |
| CN106312260A (en) * | 2016-10-21 | 2017-01-11 | 中国化学工程第六建设有限公司 | Welding method for duplex stainless steel process pipes |
| CN208662771U (en) * | 2018-05-11 | 2019-03-29 | 西科沃克瑞泰克热处理设备制造(天津)有限公司 | Utilize the soldering oven Muffle of furnace gas Convective Heating workpiece |
-
2020
- 2020-07-22 CN CN202010711913.XA patent/CN111761156A/en active Pending
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
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| GB1146040A (en) * | 1966-05-24 | 1969-03-19 | Olin Mathieson | Improvements relating to high strength brazed articles |
| DD239366A1 (en) * | 1985-07-19 | 1986-09-24 | Zentralinstitut Schweiss | LOW-MELTING SILVER-FREE LOTTERY MATERIALS FOR HARD-LOADING COLORED METALS AND IRON MATERIALS |
| CN1064636A (en) * | 1991-03-14 | 1992-09-23 | 中国有色金属工业总公司昆明贵金属研究所 | The method for welding of copper base soldering paste and copper-made ornament |
| US20050029242A1 (en) * | 2001-11-22 | 2005-02-10 | Christian Bonnet | Brazed copper heat exchangers and method for making same by welding |
| JP2005028412A (en) * | 2003-07-07 | 2005-02-03 | Denso Corp | Brazing method |
| CN1608779A (en) * | 2003-10-16 | 2005-04-27 | 株式会社电装 | Brazing method |
| TW200533455A (en) * | 2004-04-13 | 2005-10-16 | Wen-Chi Liao | Method and device for brazing CPU heat sink modules |
| KR20110045477A (en) * | 2009-10-27 | 2011-05-04 | 김문숙 | powder composition for welding metal wire for accessory |
| CN202447776U (en) * | 2011-12-20 | 2012-09-26 | 南京长宏电炉有限责任公司 | Mesh belt type protective atmosphere brazing furnace |
| CN102837095A (en) * | 2012-09-18 | 2012-12-26 | 三一重工股份有限公司 | Brazing furnace |
| CN104942473A (en) * | 2013-01-16 | 2015-09-30 | 苏州金仓合金新材料有限公司 | Environment-protecting tin zinc manganese copper alloy new material for welding and preparing method thereof |
| CN104353939A (en) * | 2014-11-17 | 2015-02-18 | 安徽瑞研新材料技术研究院有限公司 | Novel lead-free copper alloy new material and processing technology thereof |
| CN205166094U (en) * | 2015-04-22 | 2016-04-20 | 十堰车驰工贸有限公司 | Burning furnace is baked over a slow fire to copper radiator solder brazing chain belt |
| KR101646484B1 (en) * | 2016-01-15 | 2016-08-09 | 지에이씨피 주식회사 | Plate Heat Exchangers having copper connectors's manufacturing method |
| CN106238962A (en) * | 2016-08-30 | 2016-12-21 | 郑州机械研究所 | A kind of active solder alloy |
| CN106312260A (en) * | 2016-10-21 | 2017-01-11 | 中国化学工程第六建设有限公司 | Welding method for duplex stainless steel process pipes |
| CN208662771U (en) * | 2018-05-11 | 2019-03-29 | 西科沃克瑞泰克热处理设备制造(天津)有限公司 | Utilize the soldering oven Muffle of furnace gas Convective Heating workpiece |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112809117A (en) * | 2021-03-02 | 2021-05-18 | 辽宁东升精机有限公司 | Brazing process for core seal of seal type radiator |
| CN114571196A (en) * | 2022-05-06 | 2022-06-03 | 新乡市杰达精密电子器件有限公司 | Production process of membrane heater with hot water and steam dual-purpose function |
| CN114571196B (en) * | 2022-05-06 | 2022-07-29 | 新乡市杰达精密电子器件有限公司 | Production process of membrane heater with hot water and steam dual-purpose function |
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Application publication date: 20201013 |