CN112658681B - Welding and gluing hybrid connection method for stainless steel vehicle body framework and counterweight - Google Patents
Welding and gluing hybrid connection method for stainless steel vehicle body framework and counterweight Download PDFInfo
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- CN112658681B CN112658681B CN202011468785.7A CN202011468785A CN112658681B CN 112658681 B CN112658681 B CN 112658681B CN 202011468785 A CN202011468785 A CN 202011468785A CN 112658681 B CN112658681 B CN 112658681B
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Abstract
The utility model provides a stainless steel automobile body skeleton and counter weight body welding and gluey mixed connection method which characterized in that: fixing the center region of the counterweight body by using epoxy high-temperature-resistant resin, and connecting the counterweight body with a vehicle body framework by matching with a welding mode of spot welding and arc welding; the conductive sealant is adopted to seal the inner surface of the counterweight body, so that the requirement of spot welding is met, and the problem that the installation of the counterweight body is influenced by position limitation and the problem that the gluing curing time is long is solved through the combined application of welding and bonding. The fastening of the counterweight body is carried out through external spot welding and broken welding, so that the counterweight body is prevented from moving in position in the adhesive curing period, and the production period is saved. The spot welding operation is completed by adopting the conductive sealant, and after the conductive sealant is cured, an isolation layer is formed between the stainless steel vehicle body and the counterweight body, so that electrochemical corrosion between the counterweight body and the stainless steel vehicle body is avoided.
Description
Technical Field
The invention belongs to the field of manufacturing of stainless steel car bodies of urban railway passenger cars, and particularly relates to a welding and gluing hybrid connection method between a counterweight body and a car body framework.
Background
In the manufacturing process of the prior stainless steel railway passenger car body, the car body structure is verified through static load and dynamic load tests, the car body structure needs to be subjected to counterweight after verification, and the reinforcing position is subjected to interference of other parts and is in a welding connection mode. The welding requirements cannot be met due to the influence of the shape of the welding gun. Meanwhile, when the counterweight body is connected with stainless steel by different materials, the problem of dissimilar metal corrosion can occur. Therefore, the research and development of a new connecting method of the counterweight body and the vehicle body framework structure are problems which are urgently needed to be solved in the current railway vehicle industry.
Disclosure of Invention
The invention aims to solve the problem of connection between a counterweight and a vehicle body when the welding position is narrow and the operation is limited, and simultaneously solve the problem of dissimilar metal corrosion caused by connection between the counterweight and stainless steel with different materials.
In order to achieve the purpose, the invention provides a welding and gluing mixed connection method of a stainless steel vehicle body framework and a counterweight, which is characterized in that: fixing epoxy high-temperature-resistant resin in the central area of the counterweight body, and connecting the counterweight body with a vehicle body framework by matching with welding modes of spot welding and arc welding; and the conductive sealant is adopted to seal the inner surface of the counterweight body, so that the spot welding requirement is met.
Preferably, when the weight body is fixed, the central area is the middle area of the golden section line of the weight body, and the high-temperature resistant epoxy resin is coated on the central area in an S shape.
Preferably, the epoxy high-temperature resistant resin is prepared from the following main agents: curing agent: the filler is mixed according to the mass ratio of 1:1:1, preparation.
Preferably, the thickness of the epoxy high temperature resistant resin is 300g-500g/m 2 。
Preferably, after welding, a 360-degree glue injector is adopted to apply glue at the positions, where no welding seam exists, of the periphery of the counterweight body, the broken welding positions are sealed, and the problem of glue application at narrow positions is solved.
The invention solves the problem that the installation of the counterweight body is influenced by position limitation and the problem of long adhesive curing time by combined application of welding and bonding. The fastening of the counterweight body is carried out through the external spot welding and the broken welding, so that the counterweight body is not moved in the curing period of the adhesive, and the production period is saved. The spot welding operation is completed by adopting the conductive sealant, and after the conductive sealant is cured, an isolation layer is formed between the stainless steel vehicle body and the counterweight body, so that electrochemical corrosion between the counterweight body and the stainless steel vehicle body is avoided.
Drawings
FIG. 1 is a schematic diagram of a sizing injector according to the present invention.
Detailed Description
Referring to fig. 1, the embodiment of the present invention is implemented by the following steps:
1) Preparing epoxy high-temperature-resistant resin (mass ratio), and preparing a main agent: curing agent: the filler is 1:1:1;
2) Taking the middle area of the golden section line of the counterweight body as the central area of the counterweight body, and coating the central area with the epoxy high-temperature resistant resin in an S shape, wherein the thickness of the epoxy high-temperature resistant resin is 300-500 g/m 2 ；
3) In the inaccessible welding area of the contact surface of the counterweight body and the vehicle bodyCoating epoxy high-temperature resistant resin with the thickness of 300g-500g/m 2 ；
4) Coating a non-bonding area of a contact surface of the counterweight body and the vehicle body with a conductive sealant;
5) Assembling the counterweight body on the vehicle body, and pressing the counterweight body integrally to ensure that the contact surfaces are completely attached;
6) Fixing the counterweight body by adopting a spot welding mode, wherein in the fixing process, the coated conductive sealant is required to be uniformly extruded out of the periphery of the counterweight body, so that the conductive sealant is ensured to be full;
7) After the fixation, the periphery of the counterweight body is welded in a broken welding mode;
8) And after welding, gluing at the positions without welding seams around the counterweight body by adopting a 360-degree glue injector, and sealing the broken welding positions. By using the special sizing injector, the sizing angle is expanded to 360 degrees, and the limitation of the space position is solved.
In the glue injector, 1 is a base, 2 is a rear glue outlet nozzle, 3 is a front glue outlet nozzle, the front glue outlet nozzle 3 can rotate 360 degrees relative to the rear glue outlet nozzle 2, and the installation included angle alpha of the front glue outlet nozzle 3 relative to the rear glue outlet nozzle 2 is 75 degrees.
Claims (2)
1. A welding and gluing mixed connection method for a stainless steel car body framework and a counterweight body is characterized by comprising the following steps:
1) Preparing epoxy high-temperature resistant resin according to the mass ratio, wherein the main agent comprises the following components: curing agent: the filler is 1:1:1;
2) Taking the middle area of the golden section line of the counterweight body as the central area of the counterweight body, and coating the central area with the epoxy high-temperature resistant resin in an S shape, wherein the thickness of the epoxy high-temperature resistant resin is 300-500 g/m 2 ；
3) Coating epoxy high-temperature-resistant resin on the inaccessible welding area of the contact surface of the counterweight body and the vehicle body, wherein the thickness of the epoxy high-temperature-resistant resin is 300-500 g/m 2 ；
4) Coating a non-bonding area of a contact surface of the counterweight body and the vehicle body with a conductive sealant;
5) Assembling the counterweight body on the vehicle body, and pressing the counterweight body integrally to ensure that the contact surfaces are completely attached;
6) Fixing the counterweight body by adopting a spot welding mode, wherein in the fixing process, the coated conductive sealant is required to be uniformly extruded out of the periphery of the counterweight body, so that the conductive sealant is ensured to be full;
7) After the fixing, welding the periphery of the counterweight body in a broken welding mode;
8) And after welding, gluing at the positions without welding seams around the counterweight body by adopting a 360-degree glue injector, and sealing the broken welding positions.
2. The method for hybrid welding and gluing of the stainless steel car body frame and the counterweight according to claim 1, wherein the glue injector comprises a base (1), a rear glue outlet nozzle (2), and a front glue outlet nozzle (3), the front glue outlet nozzle (3) is rotatably connected to the rear glue outlet nozzle (2), and an installation angle α between the front glue outlet nozzle and the rear glue outlet nozzle is 75 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011468785.7A CN112658681B (en) | 2020-12-15 | 2020-12-15 | Welding and gluing hybrid connection method for stainless steel vehicle body framework and counterweight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011468785.7A CN112658681B (en) | 2020-12-15 | 2020-12-15 | Welding and gluing hybrid connection method for stainless steel vehicle body framework and counterweight |
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| Publication Number | Publication Date |
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| CN112658681A CN112658681A (en) | 2021-04-16 |
| CN112658681B true CN112658681B (en) | 2022-11-08 |
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| CN202011468785.7A Active CN112658681B (en) | 2020-12-15 | 2020-12-15 | Welding and gluing hybrid connection method for stainless steel vehicle body framework and counterweight |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101288930A (en) * | 2007-04-20 | 2008-10-22 | 振发实业股份有限公司 | Manufacturing method of 3C frame |
| CN103480966A (en) * | 2013-10-15 | 2014-01-01 | 吉林大学 | Austenite stainless steel lap-over laser welding method |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4072558B2 (en) * | 2006-02-23 | 2008-04-09 | 株式会社神戸製鋼所 | Joined body of steel and aluminum, and spot welding method thereof |
| JP4961532B2 (en) * | 2006-07-25 | 2012-06-27 | 日産自動車株式会社 | Method and apparatus for joining dissimilar metals |
| JP5805954B2 (en) * | 2011-01-26 | 2015-11-10 | 新日鐵住金株式会社 | Dissimilar metal joint and dissimilar metal joining method |
| CN102500869B (en) * | 2011-11-01 | 2014-01-15 | 上海交通大学 | Novel metal material arc spot welding method |
| EP3067147B1 (en) * | 2015-03-13 | 2020-01-08 | Outokumpu Oyj | Method of welding metal-based non weldable directly to each other materials, using a spacer |
| CN105033421B (en) * | 2015-03-23 | 2017-10-03 | 上海交通大学 | Dissimilar metal electric arc glue weldering connection system and method |
| CN104985399A (en) * | 2015-06-30 | 2015-10-21 | 苏州华日金菱机械有限公司 | Weld bonding method for car body cover |
| CN105149714B (en) * | 2015-09-21 | 2017-07-18 | 上海交通大学 | Metallic plate is without impression glue welding connection method |
| US10625367B2 (en) * | 2016-04-08 | 2020-04-21 | GM Global Technology Operations LLC | Method of resistance spot welding aluminum to steel |
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2020
- 2020-12-15 CN CN202011468785.7A patent/CN112658681B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101288930A (en) * | 2007-04-20 | 2008-10-22 | 振发实业股份有限公司 | Manufacturing method of 3C frame |
| CN103480966A (en) * | 2013-10-15 | 2014-01-01 | 吉林大学 | Austenite stainless steel lap-over laser welding method |
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