CN111136374A - Isolation method for vacuum diffusion welding - Google Patents
Isolation method for vacuum diffusion welding Download PDFInfo
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- CN111136374A CN111136374A CN202010005442.0A CN202010005442A CN111136374A CN 111136374 A CN111136374 A CN 111136374A CN 202010005442 A CN202010005442 A CN 202010005442A CN 111136374 A CN111136374 A CN 111136374A
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- welding
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- mixed solution
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- 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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/02—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of a press ; Diffusion bonding
- B23K20/023—Thermo-compression bonding
- B23K20/026—Thermo-compression bonding with diffusion of soldering material
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- 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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/14—Preventing or minimising gas access, or using protective gases or vacuum during welding
-
- 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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/26—Auxiliary equipment
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- Coating By Spraying Or Casting (AREA)
Abstract
The invention discloses an isolation method of vacuum diffusion welding, which adopts mixed solution as isolation material to form an isolation layer between a tool and a welding part or between adjacent welding parts; the components of the mixed solution comprise, by weight, 50-90 parts of zinc oxide powder, 90-110 parts of calcium carbonate, 60-110 parts of water glass and 1000 parts of hot water with the temperature of not lower than 60 ℃. The invention has the advantages of simple subsequent welding operation, wide application range and low cost.
Description
Technical Field
The invention belongs to the field of vacuum diffusion welding, and particularly relates to an isolation method for vacuum diffusion welding.
Background
The vacuum diffusion welding is suitable for welding and forming the bimetal parts with flat plates or special-shaped structures, two or more welding parts are used as a group, each group of welding parts is welded to obtain one bimetal part, the vacuum diffusion welding can provide high-quality welding seams and ensure that a base body is not melted and overheated, for example, the copper-steel bimetal rotor for a hydraulic pump is welded and formed, and the two copper welding parts and the steel welding part are used as a group of welding parts, and the copper-steel bimetal rotor is obtained after welding. In the vacuum diffusion welding process, a tool is sometimes needed to be used for applying load to a welding part or performing deformation prevention and limiting, the tool needs to be isolated in the actual production process, namely an isolation layer is arranged on the contact surface of the tool and the welding part, the isolation layer can prevent the tool from being welded with the welding part, the tool and the welding part are easy to separate, the production efficiency is improved, and the tool is ensured to be reused; in the vacuum diffusion welding process, two or more groups of welding parts forming a bimetal part are sometimes stacked together for welding (generally used for welding and forming a double-alloy metal plate) to obtain two or more bimetal parts at the same time, so that the production efficiency is improved.
The existing isolation method for vacuum diffusion welding adopts graphite powder, ceramic plates or stainless steel sheets as isolation materials, and an isolation layer is formed between a tool and a welding part or between adjacent welding parts in a vacuum environment, but the graphite powder is easy to raise, can pollute welding equipment, and can change the vacuum degree, so that adverse effects are generated on the welding effect, the welding equipment needs to be cleaned frequently, and the welding operation is very troublesome; the ceramic wafer is easy to break and cannot be used for welding between welding parts of complex special-shaped structures, and the application range is narrow; the stainless steel sheet needs to be subjected to oxidation treatment and heat treatment, and the process is complex and high in cost.
Therefore, the existing isolation method of vacuum diffusion welding has the defects of troublesome subsequent welding operation, narrow application range or high cost.
Disclosure of Invention
The invention aims to provide an isolation method for vacuum diffusion welding. The invention has the advantages of simple subsequent welding operation, wide application range and low cost.
The technical scheme of the invention is as follows: an isolation method of vacuum diffusion welding adopts mixed solution as isolation material to form an isolation layer between a tool and a welding part or between adjacent groups of welding parts; the components of the mixed solution comprise, by weight, 50-90 parts of zinc oxide powder, 90-110 parts of calcium carbonate, 60-110 parts of water glass and 1000 parts of hot water with the temperature of not lower than 60 ℃.
In the isolation method of vacuum diffusion welding, the components of the mixed solution include 60-80 parts of zinc oxide powder, 100 parts of calcium carbonate, 70-100 parts of water glass, and 1000 parts of hot water with the temperature of not lower than 60 ℃.
In the isolation method of vacuum diffusion welding, the components of the mixed solution include 70 parts of zinc oxide powder, 100 parts of calcium carbonate, 85 parts of water glass and 1000 parts of hot water with the temperature of not lower than 60 ℃.
In the above-mentioned isolation method by vacuum diffusion welding, the method for preparing the mixed solution comprises the following steps,
a. pouring hot water into the container to obtain product A,
b. pouring water glass into product A, stirring while pouring water glass until water glass is dissolved to obtain product B,
c. pouring zinc oxide powder and calcium carbonate into product B, stirring to obtain product C,
d. and filtering the product C by using a No. 40 screen to obtain a finished product of the mixed solution.
In the isolation method of the vacuum diffusion welding, when the mixed solution is used as an isolation material to form an isolation layer between the tool and the welding part, the mixed solution is firstly loaded into a spray gun, the spray gun sprays the mixed solution onto the tool or the welding part at the air pressure of 0.2-0.3MPa, then the tool or the welding part sprayed with the mixed solution is dried, and finally the tool and the welding part are assembled, namely the isolation layer is formed between the tool and the welding part;
when the mixed solution is used as an isolation material to form an isolation layer between adjacent groups of welding parts, the mixed solution is firstly filled into a spray gun, the spray gun sprays the mixed solution onto one group of welding parts at the air pressure of 0.2-0.3MPa, then the group of welding parts sprayed with the mixed solution is dried, and finally the adjacent groups of welding parts are stacked together, namely the isolation layer is formed between the adjacent groups of welding parts.
Compared with the prior art, the invention takes the mixed solution prepared by zinc oxide powder, calcium carbonate, water glass and hot water as the isolation material, and forms the isolation layer between the tool and the welding part or between the adjacent welding parts, so that the welding tool is isolated from the welding part and between the adjacent welding parts, no diffusion occurs between the welding tool and the welding parts, and a good isolation effect is achieved. The isolation layer that the mixed solution formed can not be kicked up, can not pollute welding equipment, and is clean, does not need often to clear up welding equipment, makes welding operation simple. The coating thickness of the invention is controllable, and the invention is suitable for welding among welding parts with various special-shaped structures, and has wide application range. Meanwhile, the invention has low cost and high efficiency.
Therefore, the invention has the advantages of simple subsequent welding operation, wide application range and low cost.
Drawings
FIG. 1 is a schematic view of the welding of a bimetal copper-steel rotor with a special-shaped structure.
FIG. 2 is a schematic view of the welding of the copper-steel pressure plate in the flat plate structure.
The labels in the figures are: 1-pressing column, 2-excircle hoop, 3-welding copper sleeve, 4-welding steel substrate, 5-welding copper plate, 6-welding steel substrate and 7-welding copper plate.
Detailed Description
The invention is further illustrated by the following figures and examples, which are not to be construed as limiting the invention.
Example 1. The tooling for the existing special-shaped structure bimetal copper steel rotor (such as YZBXXX-4001(H) rotor) is used for an isolation layer used in welding and forming, as shown in figure 1, the existing tooling for the bimetal copper steel rotor comprises a pressing column 1 with conicity and an excircle clamp 2, and a group of welding parts forming the bimetal copper steel rotor are respectively a welding copper sleeve 3 with an inner hole as a taper hole, a welding steel matrix 4 and a welding copper plate 5; when the special-shaped structure bimetal copper steel rotor is welded and formed, the welding equipment applies downward pressure through the pressing column 1 to enable the welding steel matrix 4 to be in close contact with the welding copper plate 5, the pressing column 1 also enables the welding copper sleeve 3 to be in close contact with the welding steel matrix 4 when pressing down, and the excircle clamp 2 is used for limiting the welding steel matrix 4. The existing process requires that an isolation layer be formed between the clamping band 2 and the welding steel base 4 and between the clamping band 2 and the welding copper sleeve 3.
An isolation method of vacuum diffusion welding comprises the following steps,
a. pouring 1000 parts by weight of hot water not lower than 60 ℃ into a container to obtain product A,
b. pouring 60, 70, 85, 100 or 110 parts (preferably 85 parts) of water glass into the product A, stirring while pouring until the water glass is dissolved to obtain a product B,
c. pouring 50, 60, 70, 80 or 90 parts (preferably 70 parts) of zinc oxide powder and 90, 100 or 110 parts (preferably 100 parts) of calcium carbonate into product B, stirring to obtain product C,
d. and filtering the product C by using a No. 40 screen to obtain a finished product of the mixed solution.
f. And (3) putting the mixed solution into a spray gun, spraying the mixed solution onto the outer peripheral surfaces of the pressure column 1 and the welding steel matrix 4 by the spray gun at the air pressure of 0.2-0.3MPa, wherein the spraying thickness is 0.05mm, and blowing the sprayed mixed solution by a blower. The compression column 1, the excircle hoop 2, the welding copper sleeve 3, the welding steel base 4 and the welding copper plate 5 are assembled into a whole, and isolation layers are formed between the hoop 2 and the welding steel base 4 and between the hoop 2 and the welding copper sleeve 3.
Example 2. The isolation layer is used for an isolation layer used in the welding and forming of the existing copper steel pressing plate (YZBXX-3212(H) pressing plate) with a flat plate structure, one group of welding parts forming the copper steel pressing plate are respectively a welding steel substrate 6 and a welding copper plate, as shown in figure 2, two groups of welding parts are stacked and welded at the same time, and a welding device is used for applying pressure downwards to the two groups of stacked welding parts to enable the welding parts to be in close contact with each other. The existing process requires that a barrier layer be formed between the two sets of welds.
An isolation method of vacuum diffusion welding comprises the following steps,
a. pouring 1000 parts by weight of hot water not lower than 60 ℃ into a container to obtain product A,
b. pouring 60, 70, 85, 100 or 110 parts (preferably 85 parts) of water glass into the product A, stirring while pouring until the water glass is dissolved to obtain a product B,
c. pouring 50, 60, 70, 80 or 90 parts (preferably 70 parts) of zinc oxide powder and 90, 100 or 110 parts (preferably 100 parts) of calcium carbonate into product B, stirring to obtain product C,
d. and filtering the product C by using a No. 40 screen to obtain a finished product of the mixed solution.
f. And (3) putting the mixed solution into a spray gun, spraying the mixed solution onto the contact surface of any one group of welding pieces and the other group of welding pieces by the spray gun at the air pressure of 0.2-0.3MPa, wherein the spraying thickness is 0.2mm, blowing the sprayed mixed solution by a blower, stacking the two groups of welding pieces, and forming an isolating layer between the two groups of welding pieces.
Example 3. Referring to example 1, the difference is that the target of action is changed, and the bimetal copper steel rotor is changed into the bimetal titanium steel rotor, that is, the materials of the welding copper bush 3 and the welding copper plate 5 are changed into titanium.
In step f of the isolation process, the spray thickness was changed to 0.1 mm.
Example 4. Referring to example 2, the difference is that the target of action is changed, and the copper-steel press plate is changed to a copper-titanium press plate, that is, the material of the welded steel substrate 6 is changed to titanium.
In step f of the isolation process, the spray thickness was changed to 0.5 mm.
The invention has the advantages of simple subsequent welding operation, wide application range and low cost.
Claims (5)
1. An isolation method for vacuum diffusion welding, characterized in that: forming an isolation layer between the tool and the welding parts or between adjacent welding parts by using the mixed solution as an isolation material; the components of the mixed solution comprise, by weight, 50-90 parts of zinc oxide powder, 90-110 parts of calcium carbonate, 60-110 parts of water glass and 1000 parts of hot water with the temperature of not lower than 60 ℃.
2. The isolation method of vacuum diffusion welding of claim 1, wherein: the components of the mixed solution comprise 60-80 parts of zinc oxide powder, 100 parts of calcium carbonate, 70-100 parts of water glass and 1000 parts of hot water with the temperature of not lower than 60 ℃.
3. The isolation method of vacuum diffusion welding of claim 2, wherein: the components of the mixed solution comprise 70 parts of zinc oxide powder, 100 parts of calcium carbonate, 85 parts of water glass and 1000 parts of hot water with the temperature of not lower than 60 ℃.
4. The isolation method of vacuum diffusion welding as claimed in claim 1, 2 or 3, wherein: the preparation method of the mixed solution comprises the following steps,
a. pouring hot water into the container to obtain product A,
b. pouring water glass into product A, stirring while pouring water glass until water glass is dissolved to obtain product B,
c. pouring zinc oxide powder and calcium carbonate into product B, stirring to obtain product C,
d. and filtering the product C by using a No. 40 screen to obtain a finished product of the mixed solution.
5. The isolation method of vacuum diffusion welding as claimed in claim 1, 2 or 3, wherein: when the mixed solution is used as an isolation material to form an isolation layer between the tool and the welding part, the mixed solution is firstly loaded into a spray gun, the spray gun sprays the mixed solution onto the tool or the welding part at the air pressure of 0.2-0.3MPa, then the tool or the welding part sprayed with the mixed solution is dried, and finally the tool and the welding part are assembled, namely the isolation layer is formed between the tool and the welding part;
when the mixed solution is used as an isolation material to form an isolation layer between adjacent groups of welding parts, the mixed solution is firstly filled into a spray gun, the spray gun sprays the mixed solution onto one group of welding parts at the air pressure of 0.2-0.3MPa, then the group of welding parts sprayed with the mixed solution is dried, and finally the adjacent groups of welding parts are stacked together, namely the isolation layer is formed between the adjacent groups of welding parts.
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| CN202010005442.0A CN111136374B (en) | 2020-01-03 | 2020-01-03 | Isolation method for vacuum diffusion welding |
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| CN202010005442.0A CN111136374B (en) | 2020-01-03 | 2020-01-03 | Isolation method for vacuum diffusion welding |
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| CN111136374B CN111136374B (en) | 2021-12-21 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2032511C1 (en) * | 1992-10-20 | 1995-04-10 | Одесский институт низкотемпературной техники и энергетики | Method of diffusion welding of aluminium alloys through and intermediate interlayer |
| CN101362253A (en) * | 2008-09-12 | 2009-02-11 | 北京工业大学 | TiNi shape memory alloy and stainless steel instant liquid-phase diffusion welding connection method |
| CN101920393A (en) * | 2010-09-25 | 2010-12-22 | 武汉理工大学 | Low-temperature diffusion welding method for magnesium alloy and aluminum alloy |
| CN103722122A (en) * | 2013-12-31 | 2014-04-16 | 安顺学院 | Spraying material for metal mold and spraying process thereof |
| CN105513972A (en) * | 2015-12-07 | 2016-04-20 | 苏州明和行新材料科技有限公司 | Method and system for preparing capillary wick through diffusion welding |
| CN105537507A (en) * | 2015-12-07 | 2016-05-04 | 禹州市神运机械有限公司 | Paint for aluminum alloy casting and use method thereof |
| CN106735831A (en) * | 2016-12-16 | 2017-05-31 | 中航力源液压股份有限公司 | A kind of diffusion welding method of pin structure |
| CN109337418A (en) * | 2018-11-09 | 2019-02-15 | 北京航星机器制造有限公司 | For superplastic forming/diffusion connection solder resist, preparation method and application method |
-
2020
- 2020-01-03 CN CN202010005442.0A patent/CN111136374B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2032511C1 (en) * | 1992-10-20 | 1995-04-10 | Одесский институт низкотемпературной техники и энергетики | Method of diffusion welding of aluminium alloys through and intermediate interlayer |
| CN101362253A (en) * | 2008-09-12 | 2009-02-11 | 北京工业大学 | TiNi shape memory alloy and stainless steel instant liquid-phase diffusion welding connection method |
| CN101920393A (en) * | 2010-09-25 | 2010-12-22 | 武汉理工大学 | Low-temperature diffusion welding method for magnesium alloy and aluminum alloy |
| CN103722122A (en) * | 2013-12-31 | 2014-04-16 | 安顺学院 | Spraying material for metal mold and spraying process thereof |
| CN105513972A (en) * | 2015-12-07 | 2016-04-20 | 苏州明和行新材料科技有限公司 | Method and system for preparing capillary wick through diffusion welding |
| CN105537507A (en) * | 2015-12-07 | 2016-05-04 | 禹州市神运机械有限公司 | Paint for aluminum alloy casting and use method thereof |
| CN106735831A (en) * | 2016-12-16 | 2017-05-31 | 中航力源液压股份有限公司 | A kind of diffusion welding method of pin structure |
| CN109337418A (en) * | 2018-11-09 | 2019-02-15 | 北京航星机器制造有限公司 | For superplastic forming/diffusion connection solder resist, preparation method and application method |
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