CN106881530A - Spraying red copper layer welding method - Google Patents
Spraying red copper layer welding method Download PDFInfo
- Publication number
- CN106881530A CN106881530A CN201710123791.0A CN201710123791A CN106881530A CN 106881530 A CN106881530 A CN 106881530A CN 201710123791 A CN201710123791 A CN 201710123791A CN 106881530 A CN106881530 A CN 106881530A
- Authority
- CN
- China
- Prior art keywords
- red copper
- stage
- welding
- weld interval
- copper layer
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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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/60—Preliminary treatment
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/12—Copper or alloys thereof
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Coating By Spraying Or Casting (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention discloses one kind spraying red copper layer welding method, comprise the following steps：Red copper powder melts are bonded in plasma thermal sprayed mode are covered on ceramic insulating layer, use pulse laser, it is positive out of focus by the laser head alignment copper belt of pulse laser, heating period first stage, weld interval is the 1/2 of whole weld interval, size of current when welding current is for welding peak power；Second stage red copper melting stage, welding current is the first stage 1/3 to 1/2, and weld interval is the 1/2 of the first stage, and Slow cooling stage phase III, welding current is the 1/2 of second stage, and weld interval is more than or equal to second stage weld interval.The welding of the fast and reliable realization spraying red copper of the present invention and punching press red copper, and it is safe and reliable in welding process, without solder, meet unleaded welding procedure.
Description
Technical field
The present invention relates to a kind of welding method, more particularly to a kind of spraying red copper layer welding method, belong to solder technology neck
Domain.
Background technology
At present, the welding of general copper material is mostly using welding methods such as argon tungsten-arc weldings, but the method has welding cost
Height, argon gas is expensive, easily the defects such as crackle, stomata occurs after equipment complexity, the low deficiency of production efficiency, and welding.Also have
Using soldering, two connections of copper electrodes are realized using electric iron fusing scolding tin.But in the case of high current, or certain
The special occasions of a little high temperature, the fusing point of tin is too low, there is the risk of fusing, and the high temperature resistant solder for adding all contains lead etc. mostly
Harmful material.Soldering process is unfavorable for the automation in production process, due to being difficult the structures such as arrangement welding resistance, and weldering
Junction product is larger, thus consumption control is difficult.Common scolding tin is not suitable for the electric heating layer electrode of hot environment (more than 200 degree)
Connection, add the resistant to elevated temperatures solder of other elements, the content of lead is very high, and lead be to person harmful element, thus
Related unleaded required standard can not be met, furthermore the thermal conductivity factor of copper is very high, during welding, the bad control of temperature of welding region
System, it is easy to weld defect occur.
The content of the invention
It is an object of the invention to provide one kind spraying red copper layer welding method, realize being sprayed in auto heater electrod assembly
The welding of red copper and punching press red copper is applied, without solder, unleaded welding procedure is met, temperature punching high can be born after welding
Hit, welding quality meets the use requirement of auto heater zone of heating electrode.
The purpose of the present invention is achieved by the following technical programs：
One kind spraying red copper layer welding method, spraying red copper layer 3 is welded with copper belt 2, is comprised the following steps：
1) red copper powder melts are bonded in plasma thermal sprayed mode for the ceramic insulating layer 4 being covered on aluminium base 5
On, form spraying red copper layer 3；
2) copper belt 2 is placed on spraying red copper layer 3, using pulse laser, the laser head 1 of pulse laser is aligned
Copper belt 2, focal length is positive out of focus, and weld interval is followed successively by T1、Tp、T2、T3；
3) heating period first stage, i.e. copper belt 2 and the temperature rise period for spraying red copper layer 3, weld interval is T1+Tp, it is
The 1/2 of whole weld interval, size of current when welding current is for welding peak power；
4) the second stage red copper melting stage, weld interval is T2, welding current is heating period first stage to weld peak
The 1/3 to 1/2 of value electric current, weld interval T2It is T1+Tp1/2, complete copper belt 2 and spraying red copper layer 3 both welding；
5) the phase III Slow cooling stage, weld interval is T3, welding current is the weldering of second stage red copper melting stage
Connect the 1/2 of electric current, weld interval T3More than or equal to weld interval T2。
The purpose of the present invention can also further be realized by following technical measures：
Foregoing spraying red copper layer welding method, the step 1) it is direct by red copper powder melts in plasma thermal sprayed mode
It is bonded on aluminium base 5, forms spraying red copper layer 3.
Foregoing spraying red copper layer welding method, the thickness of the thickness less than spraying red copper layer 3 of the copper belt 2.
Foregoing spraying red copper layer welding method, the step 2) laser head 1 of pulse laser is directed at copper belt 2, it is burnt
Away from being positive out of focus, it is 2mm to be worth.
Foregoing spraying red copper layer welding method, heating period first stage, weld interval T1+TpIt is 1ms, welding electricity
Stream size is 250A；The second stage red copper melting stage, weld interval T2It is 0.5ms, welding current size is 85A；Institute
Slow cooling stage phase III is stated, weld interval is T3It is 0.8ms, welding current size is 50A.
Compared with prior art, the beneficial effects of the invention are as follows：Fast and reliable realization spraying red copper and punching press red copper
Welding, and it is safe and reliable in welding process, without solder, meet unleaded welding procedure, temperature high can be born after welding
Impact, welding quality meets the use requirement of electric heater zone of heating.
Brief description of the drawings
Fig. 1 is the structure chart of spraying red copper and punching press red copper in auto heater electrod assembly；
Fig. 2 is present invention spraying red copper layer welding method current time variation diagram.
Specific embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, being the structure chart of spraying red copper and punching press red copper in auto heater electrod assembly, ceramic insulating layer
4 are covered on aluminium base 5, and spraying red copper layer 3 is covered on ceramic insulating layer 4.
Spraying red copper layer welding method of the invention, spraying red copper layer 3 is integrally welded as electrode with copper belt 2,
The method is comprised the following steps：
1) red copper powder melts are bonded in plasma thermal sprayed mode for the ceramic insulating layer 4 being covered on aluminium base 5
On, form spraying red copper layer 3；Or direct be bonded in red copper powder melts is covered on aluminium base 5, spraying red copper layer is formed
3。
2) copper belt 2 is placed on spraying red copper layer 3, using pulse laser, the laser head 1 of pulse laser is aligned
Copper belt 2, focal length is positive out of focus, and the value of positive out of focus is 2mm, and weld interval is followed successively by T1、Tp、T2、T3。
3) heating period first stage, i.e. copper belt 2 and the temperature rise period for spraying red copper layer 3, weld interval is T1+Tp, it is
The 1/2 of whole weld interval, size of current when welding current is for welding peak power.
4) the second stage red copper melting stage, weld interval is T2, welding current is heating period first stage to weld electricity
The 1/3 to 1/2 of stream, weld interval T2It is T1+Tp1/2, pulsed laser irradiation melts copper belt 2 on copper belt 2, and following
The spraying red copper layer that is formed of spraying 3 bond together, and the ceramic insulating layer 4 not destroyed below spraying red copper completes red copper
Welding with both 2 and spraying red copper layer 3；The copper belt 2 must be thinner than spraying red copper layer 3, can so reduce and weld
The risk of journey laser breakdown spraying red copper layer 3 and ceramic insulating layer 4.It is 0.2mm for example with the thickness of copper belt 2, sprays red copper
3 thickness of layer are 0.25mm.
5) the phase III Slow cooling stage, weld interval is T3, welding current is the weldering of second stage red copper melting stage
Connect the 1/2 of electric current, weld interval T3More than or equal to weld interval T2。
It is as shown in Figure 2 present invention spraying red copper layer welding method current time variation diagram, the setting of welding parameter is main
It it is size and the time for adjusting pulse current, overall requirement is, in T1+TpTime period needs an electric current for rapidly rising, quickly
Heating copper belt 2 and spraying red copper layer 3, its electric current and the specific size of time are according to spraying red copper layer 3 and the thickness of copper belt 2
And the size of aluminium base 5 is determined, the aluminium base heating 1ms of such as 1kg or so, size of current is 250A；Pulse laser is produced
Laser penetrated on copper belt by laser head 1, copper belt 2 is brought rapidly up, and heat transfer to following spraying red copper layer 3,
Reach when to a certain degree, the laser for seriously being reflected originally, due to the rising of temperature, the surface photon of copper belt 2 absorbs and increases
Plus, and then the fusing point of welding region is reached, and copper belt 2 is melted, bonded together with following spraying red copper layer 3.Then decay
Electric current, into weld seam fusing stage, whole T2(0.5ms) time period, size of current is I under small power density2(85A), two
Person carries out heat conduction weld, and the time is as far as possible short, in order to avoid puncture following dielectric ceramic layer 4；Due to extremely holding after copper alloy welding
Easily there is crackle, then to a small electric current I3(50A) and longer time T3(0.8ms), Slow cooling reduces welding and splits
The generation of line defect, the time of whole process is all in millisecond rank.
In addition to the implementation, the present invention can also have other embodiment, all use equivalents or equivalent transformation shape
Into technical scheme, all fall within the protection domain of application claims.
Claims (5)
1. a kind of spraying red copper layer welding method, will spray red copper layer and red copper welding, it is characterised in that including following step
Suddenly：
1) red copper powder melts are bonded on the ceramic insulating layer being covered on aluminium base in plasma thermal sprayed mode, are formed
Spraying red copper layer；
2) copper belt is placed on spraying red copper layer, using pulse laser, the laser head of pulse laser is directed at copper belt,
Focal length is positive out of focus, and weld interval is followed successively by T1、Tp、T2、T3；
3) heating period first stage, i.e. copper belt and the temperature rise period for spraying red copper layer, weld interval is T1+Tp, it is whole weldering
Connect the 1/2 of time, size of current when welding current is for welding peak power；
4) the second stage red copper melting stage, weld interval is T2, welding current is the 1/ of heating period first stage welding current
3 to 1/2, weld interval T2It is T1+Tp1/2, complete copper belt and spraying red copper layer the welding of the two；
5) the phase III Slow cooling stage, weld interval is T3, welding current is second stage red copper melting stage welding current
1/2, weld interval T3More than or equal to weld interval T2。
2. it is as claimed in claim 1 to spray red copper layer welding method, it is characterised in that the step 1) with plasma thermal sprayed
Directly be bonded in red copper powder melts on aluminium base by mode, forms spraying red copper layer.
3. it is as claimed in claim 1 to spray red copper layer welding method, it is characterised in that the thickness of the copper belt is less than spraying
The thickness of red copper layer.
4. spraying red copper layer welding method as claimed in claim 1, it is characterised in that the step 2) by pulse laser
Laser head is directed at copper belt, and focal length is positive out of focus, and it is 2mm to be worth.
5. it is as claimed in claim 1 to spray red copper layer welding method, it is characterised in that heating period first stage, weldering
Meet time T1+TpIt is 1ms, welding current size is 250A；The second stage red copper melting stage, weld interval T2For
0.5ms, welding current size is 85A；The phase III Slow cooling stage, weld interval is T3It is 0.8ms, welding current
Size is 50A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710123791.0A CN106881530B (en) | 2017-03-03 | 2017-03-03 | Spray red copper layer welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710123791.0A CN106881530B (en) | 2017-03-03 | 2017-03-03 | Spray red copper layer welding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106881530A true CN106881530A (en) | 2017-06-23 |
| CN106881530B CN106881530B (en) | 2018-11-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710123791.0A Active CN106881530B (en) | 2017-03-03 | 2017-03-03 | Spray red copper layer welding method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107447178A (en) * | 2017-06-28 | 2017-12-08 | 镇江海姆霍兹传热传动***有限公司 | Heater heating element heater preparation method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101309773A (en) * | 2006-10-19 | 2008-11-19 | 松下电器产业株式会社 | Method for controlling arc welding and arc welding apparatus |
| CN101856757A (en) * | 2010-06-10 | 2010-10-13 | 重庆理工大学 | Powder medium diffusion reaction resistance soldering method of aluminum alloy |
| CN103071924A (en) * | 2013-02-05 | 2013-05-01 | 天津滨海雷克斯激光科技发展有限公司 | Method for laser welding thin metal workpieces with plating thickness smaller than 10Mu m |
| KR20160140813A (en) * | 2014-05-07 | 2016-12-07 | 신닛테츠스미킨 카부시키카이샤 | Spot welding method |
-
2017
- 2017-03-03 CN CN201710123791.0A patent/CN106881530B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101309773A (en) * | 2006-10-19 | 2008-11-19 | 松下电器产业株式会社 | Method for controlling arc welding and arc welding apparatus |
| CN101856757A (en) * | 2010-06-10 | 2010-10-13 | 重庆理工大学 | Powder medium diffusion reaction resistance soldering method of aluminum alloy |
| CN103071924A (en) * | 2013-02-05 | 2013-05-01 | 天津滨海雷克斯激光科技发展有限公司 | Method for laser welding thin metal workpieces with plating thickness smaller than 10Mu m |
| KR20160140813A (en) * | 2014-05-07 | 2016-12-07 | 신닛테츠스미킨 카부시키카이샤 | Spot welding method |
Non-Patent Citations (1)
| Title |
|---|
| 吴晓红等: "《紫铜激光焊接工艺研究》", 《应用激光》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107447178A (en) * | 2017-06-28 | 2017-12-08 | 镇江海姆霍兹传热传动***有限公司 | Heater heating element heater preparation method |
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| Publication number | Publication date |
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| CN106881530B (en) | 2018-11-02 |
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| CB02 | Change of applicant information |
Address after: 212000 floor 1, 2 Chuang Chuang garden, 707 Changjiang Road, Zhenjiang, Jiangsu Applicant after: Zhenjiang helm Hotz heat transfer transmission system Co., Ltd. Address before: 212000 30 Block 99, 15 Dingmaojing Road, Zhenjiang City, Jiangsu Province Applicant before: Zhenjiang helm Hotz heat transfer transmission system Co., Ltd. |
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