CN106825812A - A kind of ameliorative way of convex surface silver contact resistance brazing - Google Patents
A kind of ameliorative way of convex surface silver contact resistance brazing Download PDFInfo
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- CN106825812A CN106825812A CN201611157781.0A CN201611157781A CN106825812A CN 106825812 A CN106825812 A CN 106825812A CN 201611157781 A CN201611157781 A CN 201611157781A CN 106825812 A CN106825812 A CN 106825812A
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- silver contact
- electrode
- convex surface
- face
- notch
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Classifications
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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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/0004—Resistance soldering
-
- 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0205—Non-consumable electrodes; C-electrodes
-
- 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/40—Making wire or rods for soldering or welding
- B23K35/402—Non-consumable electrodes; C-electrodes
-
- 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
Abstract
The present invention relates to welding technology field, it is desirable to provide a kind of ameliorative way of convex surface silver contact resistance brazing.Including：The end face of silver contact resistance brazing electrode used therein head is processed into the Surface of Sphere of indent；Several notch is outputed in the end face center of electrode tip；External boundary to electrode indent Surface of Sphere carries out plain milling treatment；Deburring treatment is carried out to notch border and cambered surface border；The end face of electrode tip is compressed into convex surface silver contact component, resistance brazing is then carried out.The invention by notch introduce resistance brazing welding electrode, the good silver contact component in postwelding convex surface can be obtained；The situation that postwelding silver contact comes off, silver contact welding position offsets is reduced, the qualification rate of convex surface silver contact weld assembly is improve, production efficiency is significantly improved.Simple easy processing, application of easily accomplishing scale production, with significant economic benefit.
Description
Technical field
The invention belongs to welding technology field, it particularly relates to be a kind of improvement of convex surface silver contact resistance brazing
Method.
Background technology
Silver contact component is the core component of the various breakers of Low Voltage Electrical Apparatus.Silver contact when in use, is often required that
It is linked to be entirety with the more preferable copper of electric conductivity (or copper alloy) to apply.The connected mode of silver contact has resistance brazing, sensing pricker
Weldering, overall liquid-phase sintering etc..Resistance brazing is to apply pressure to component to be welded respectively by welding electrode, by electric current by treating
Resistance heat produced by weldering component heats component to be welded and fusing solder, so as to realize that metal is connected.
Welded with conventional resistive brazing mode, such as section is welded for the electrode of plane, or used and sphere contact
The concave electrodes for matching completely are welded, and will easily cause that silver contact convex surface is driven plain, convex surface silver contact is easily sticky in concave surface
Cannot be taken out in electrode, postwelding easily snaps situation about coming off.
Document《Brief talk selection and the special circumstances Welding Process Design of contact assembly resistance welding electrode material》Using electrode
Section Design is carried out electric resistance welding and is received face silver contact for the method for convex tendon, but the method cannot very well fix silver contact, silver contact
Can be moved parallel to convex tendon direction, easily cause the displacement of convex surface silver contact；And the contact surface of convex tendon electrode and silver contact
Product is too small, easily occurs that temperature is locally too high during welding, and the contact surface of convex tendon and silver contact is partial in nugget distribution, and welding is remaining
The problems such as stress is obvious, have impact on the weld strength of postwelding convex surface silver contact component to a certain extent.
The content of the invention
The technical problem to be solved in the present invention is to overcome the shortcomings of that prior art is present and defect, there is provided a kind of convex surface silver
The ameliorative way of contact resistance soldering.
In order to solve technical problem, the present invention is achieved by the following technical programs：
A kind of ameliorative way of convex surface silver contact resistance brazing is provided, is comprised the following steps：
(1) end face of silver contact resistance brazing electrode used therein head is processed into the Surface of Sphere of indent；
(2) end face center in electrode tip outputs several notch；
(3) external boundary to electrode indent Surface of Sphere carries out plain milling treatment；
(4) deburring treatment is carried out to notch border and cambered surface border；
(5) end face of electrode tip is compressed into convex surface silver contact component, then carries out resistance brazing.
In the present invention, the Surface of Sphere that the end face of electrode tip is processed into indent is by milling tool or numerical control machine
Bed processing is machined and is realized.
In the present invention, Surface of Sphere and the silver contact convex surface of indent have identical curvature.
In the present invention, slotted in the end face center of electrode tip, realized by way of milling cutter or wire cutting.
In the present invention, the notch shape of the electrode tip end face center is that cross, three leaves are rotary-type, star-like；Notch
Depth is 0.1mm~3mm, and width is the 10%~40% of silver contact diameter.
In the present invention, the plain milling treatment, refers to carry out plain milling treatment to the external boundary of electrode end surface with plain cutter, is made
After plain milling electrode and the width of the contact area of silver contact be the 5%~30% of silver contact diameter.
In the present invention, when the plain milling is processed, milling cutter is installed parallel to electrode axis, and along perpendicular to the flat of axis
Do plane motion in face.
In the present invention, when the plain milling is processed, plain milling depth is identical or different with depth of rebate, and its depth dimensions is no more than
Silver contact convex surface is highly.
After being processed through above four steps, the indent Surface of Sphere of electrode is close to silver contact convex surface, then is pressurizeed in electrode tip, from
And compress silver contact and the tactile bridge of copper.Based on the thought on protection silver contact convex surface top, the center of electrode section is slotted
Treatment, so silver contact convex surface top does not contact with electrode section here, it is to avoid silver contact convex surface is driven plain, and avoids silver from touching
Point convex surface top is viscous with electrode glutinous.
Inventive principle is described：
The ameliorative way of silver contact resistance brazing in convex surface of the invention, selected unlike existing end face indent and in
The electrode of heart fluting carries out resistance brazing.The design of welding electrode of the invention, makes convex surface silver contact be difficult displacement, postwelding convex surface
Survivable and postwelding is difficult to snap and comes off, and can preferably meet different requirements.
Compared with prior art, the device have the advantages that：
(1) the invention by notch introduce resistance brazing welding electrode, can obtain the good silver in postwelding convex surface touch
Point component；
(2) compared with traditional convex surface silver contact resistance brazing, come off The present invention reduces postwelding silver contact, silver contact welding
The situation of position skew, improves the qualification rate of convex surface silver contact weld assembly, significantly improves production efficiency.
(3) simple easy processing, application of easily accomplishing scale production, with significant economic benefit in technique.
The present invention has taken into full account the influence of multiple target factor in the silver contact welding process of convex surface, solves prior art convex surface
Be difficult to solder to, silver contact convex surface top is easily viscous glutinous with electrode, silver contact is easily shifted, postwelding convex surface is driven plain, postwelding easily snap it is de-
The problem for falling.
Brief description of the drawings
(a) is the convex surface silver contact resistance brazing schematic diagram of the embodiment of the present invention 1 in Fig. 1 figures, and (b) is the embodiment of the present invention
1 Top electrode end view；
In figure：101- Top electrodes, 102- convex surfaces silver contact, 103- copper touches bridge, 104- copper tungsten pedestals, 105- bottom electrodes,
The indent Surface of Sphere of 106- electrode end surfaces, the cruciform groove of 107- electrode tips, the crossing center of this groove is square；
(c) is the convex surface silver contact resistance brazing schematic diagram of the embodiment of the present invention 2 in Fig. 2 figures, and (d) is the embodiment of the present invention
2 Top electrode end view；
In figure：201- Top electrodes, 202- convex surfaces silver contact, 203- copper touches bridge, 204- copper tungsten pedestals, 205- bottom electrodes,
The indent Surface of Sphere of 206- electrode end surfaces, the cruciform groove of 207- electrode tips, the right-angled intersection center of this groove is circle；
(e) is the convex surface silver contact resistance brazing schematic diagram of the embodiment of the present invention 3 in Fig. 3 figures, and (f) is the embodiment of the present invention
3 Top electrode end view；
In figure：301- Top electrodes, 302- convex surfaces silver contact, 303- copper touches bridge, 304- copper tungsten pedestals, 305- bottom electrodes,
The indent Surface of Sphere of 306- electrode end surfaces, the rotary-type groove of three leaves of 307- electrode tips, the crossing center of this groove is circle；
(g) is the convex surface silver contact resistance brazing schematic diagram of the embodiment of the present invention 4 in Fig. 4 figures, and (h) is the embodiment of the present invention
4 Top electrode end view.
In figure：401- Top electrodes, 402- convex surfaces silver contact, 403- copper touches bridge, 404- copper tungsten pedestals, 405- bottom electrodes,
The indent Surface of Sphere of 406- electrode end surfaces, the star-shaped slot of 407- electrode tips, the crossing center of this groove is star.
Specific embodiment
Embodiments of the invention are elaborated below, following examples give detailed implementation method and specific
Operating process, but protection scope of the present invention is not limited to following embodiments.
Embodiment 1
As shown in figure 1, being changed to the resistance brazing technology of a certain model convex surface silver contact using the method for the invention
It is kind, the described method comprises the following steps：
The first step, by the method for lathe in machining, is carried out in the end face of silver contact resistance brazing electrode used therein first 101
Machining, makes indent Surface of Sphere 106.The convex curvature one of the curvature of indent Surface of Sphere 106 and silver contact to be welded 102
Cause, convex radius are 15mm.
Second step, cross notch 107, groove are outputed using wire cutting mode at the electrode end surface center processed through the first step
Mouth depth is 1mm, and width of rebate is the 34.2% of the diameter of silver contact 102.
3rd step, the external boundary of the end face of electrode tip 101 by plain cutter to being processed through the first step and second step is put down
Milling is processed so that the tip of electrode 101 and the width of the contact area of silver contact 102 are the 30% of the diameter of silver contact 102 after plain milling.
The plain milling is eud mill parallel to electrode axis, and plane motion is done along the plane perpendicular to axis.Plain milling depth and groove
107 depth of mouth are different.
4th step, deburring treatment is carried out to the border of notch 107 and the border of sphere 106.
5th step, uses instead through the first step up to the electrode 101 that the 4th step is processed carries out the resistance brazing of convex surface silver contact 102,
Wherein, the indent Surface of Sphere 106 of electrode is close to the convex surface of silver contact 102, then is pressurizeed in electrode tip 101, so as to compress silver touch
Point 102 and copper touch bridge 103, then carry out resistance brazing, complete the improvement treatment of the resistance brazing of convex surface silver contact 102.
Than traditional convex surface silver contact resistance brazing mode, it is excellent that the brazing mode after improvement causes that nugget distribution is able to
Change, for a batch of convex surface silver contact, the big silver contact showed increased of postwelding shear strength, and silver contact convex surface top with
The situation that electrode glues glutinous, silver contact displacement, convex surface is subject to crushing is significantly reduced, and product percent of pass improves 23.0%, and improves
The simple easy processing of method.
Embodiment 2
As shown in Fig. 2 being changed to the resistance brazing technology of a certain model convex surface silver contact using the method for the invention
Kind, difference from Example 1 is that the depth of notch 207 is adjusted to 0.1mm, and the width adjustment of notch 207 is silver contact diameter
25%, the shape at the center of notch 207 is adjusted to circular from square, the width of the contact area of eletrode tip 201 and silver contact 202
The 11.7% of the diameter of silver contact 202 is then adjusted to, and the chamfered that size is 2mm is increased to electrode end surface external boundary,
The described method comprises the following steps：
The first step, the method processed by Digit Control Machine Tool, is carried out in the end face of silver contact resistance brazing electrode used therein first 201
Machining, makes indent Surface of Sphere 206.The convex curvature one of the curvature of indent Surface of Sphere 206 and silver contact to be welded 202
Cause, convex radius are 75mm.
Second step, cross notch 207 is outputed using milling tool mode at the electrode end surface center processed through the first step,
Depth of rebate is 0.1mm, and width of rebate is the 25% of the diameter of silver contact 202, and rotation is milled out directly at the central crossbar of notch 207
Footpath is the circular groove of 7mm, and circular groove depth is also 0.1mm.
3rd step, the external boundary of the end face of electrode tip 201 by plain cutter to being processed through the first step and second step is put down
Milling is processed so that eletrode tip 201 and the width of the contact area of silver contact 202 are the diameter of silver contact 202 after plain milling
11.7%.The plain milling is eud mill parallel to electrode axis, and plane motion is done along the plane perpendicular to axis.Plain milling depth
Degree is different from the depth of notch 207.And chamfered is carried out to the end face external boundary of electrode 201, the distance to end points is 2mm.
4th step, deburring treatment is carried out to the border of notch 207 and the border of sphere 206.
5th step, uses instead through the first step up to the electrode 201 that the 4th step is processed carries out the resistance brazing of convex surface silver contact 202,
Wherein, the indent Surface of Sphere 206 of electrode is close to the convex surface of silver contact 202, then is pressurizeed in electrode tip 201, so as to compress silver touch
Point 202 and copper touch bridge 203, then carry out resistance brazing, complete the improvement treatment of the resistance brazing of convex surface silver contact 202.
Than traditional convex surface silver contact resistance brazing mode, it is excellent that the brazing mode after improvement causes that nugget distribution is able to
Change, for a batch of convex surface silver contact, the big silver contact showed increased of postwelding shear strength, and silver contact convex surface top with
The situation that electrode glues glutinous, silver contact displacement, convex surface is subject to crushing is significantly reduced, and product percent of pass improves 21.5%.
Embodiment 3
As shown in figure 3, being changed to the resistance brazing technology of a certain model convex surface silver contact using the method for the invention
Kind, the difference with embodiment 2 is, notch 307 is shaped as that three leaves are rotary-type, and the depth of notch 307 is adjusted to 3mm, notch
307 width adjustments are the 10% of the diameter of silver contact 302, and eletrode tip 301 is touched with the width of the contact area of silver contact 302 for silver-colored
The 16.8% of 302 diameters of point, and plain milling depth is identical with the depth of notch 307.The described method comprises the following steps：
The first step, by the method for milling cutter method of loci milling, by the facing cut of silver contact resistance brazing electrode used therein first 301
It is indent Surface of Sphere 306 to be whittled into.The curvature of indent Surface of Sphere 306 is consistent with the convex curvature of silver contact to be welded 302, convex curvature
Radius is 35mm.
Second step, three leaves in the end face center of electrode 301 processed through the first step are outputed using milling mode rotary-type, notch
Depth is 3mm, and width of rebate is the 10% of the diameter of silver contact 302.
3rd step, the external boundary of the end face of electrode tip 301 by plain cutter to being processed through the first step and second step is put down
Milling is processed so that eletrode tip 301 and the width of the contact area of silver contact 302 are the diameter of silver contact 302 after plain milling
16.8%.The plain milling is eud mill parallel to electrode axis, and plane motion is done along the plane perpendicular to axis.Plain milling depth
Degree is identical with the depth of notch 307.
4th step, deburring treatment is carried out to the border of notch 307 and the border of sphere 306.
5th step, uses instead through the first step up to the electrode 301 that the 4th step is processed carries out convex surface silver contact resistance brazing, its
In, the indent Surface of Sphere 306 of electrode is close to the convex surface of silver contact 302, then in the pressurization of the top of electrode 301, so as to compress silver contact
302 and copper touch bridge 303, then carry out resistance brazing, complete the improvement treatment of convex surface silver contact resistance brazing.
Than traditional convex surface silver contact resistance brazing mode, it is excellent that the brazing mode after improvement causes that nugget distribution is able to
Change, for a batch of convex surface silver contact, the big silver contact showed increased of postwelding shear strength, and silver contact convex surface top with
The situation that electrode glues glutinous, silver contact displacement, convex surface is subject to crushing is significantly reduced, and product percent of pass improves 16.6%.
Embodiment 4
As shown in figure 4, being changed to the resistance brazing technology of a certain model convex surface silver contact using the method for the invention
Kind, difference from Example 1 is, notch 407 is shaped as star-like, and the depth of notch 407 is adjusted to 1.5mm, the width of notch 407
The 40% of the diameter of silver contact 402 is adjusted to, eletrode tip 401 is that silver contact 402 is straight with the width of the contact area of silver contact 402
The 5% of footpath.The described method comprises the following steps：
The first step, by the method for lathe in machining, is carried out in the end face of silver contact resistance brazing electrode used therein first 401
Machining, makes indent Surface of Sphere 406.The convex curvature one of the curvature of indent Surface of Sphere 406 and silver contact to be welded 402
Cause, convex radius are 25mm.
Second step, star-like notch 407, notch are outputed using wire cutting mode at the electrode end surface center processed through the first step
Depth is 1.5mm, and width of rebate is the 40% of the diameter of silver contact 402.
3rd step, the external boundary of the end face of electrode tip 401 by plain cutter to being processed through the first step and second step is put down
Milling is processed so that the tip of electrode 401 and the width of the contact area of silver contact 402 are the 5% of the diameter of silver contact 402 after plain milling.
The plain milling is eud mill parallel to electrode axis, and plane motion is done along the plane perpendicular to axis.Plain milling depth and groove
407 depth of mouth are different.
4th step, deburring treatment is carried out to the border of notch 407 and the border of sphere 406.
5th step, uses instead through the first step up to the electrode 401 that the 4th step is processed carries out the resistance brazing of convex surface silver contact 402,
Wherein, the indent Surface of Sphere 406 of electrode is close to the convex surface of silver contact 402, then is pressurizeed in electrode tip 401, so as to compress silver touch
Point 402 and copper touch bridge 403, then carry out resistance brazing, complete the improvement treatment of the resistance brazing of convex surface silver contact 402.
Than traditional convex surface silver contact resistance brazing mode, it is excellent that the brazing mode after improvement causes that nugget distribution is able to
Change, for a batch of convex surface silver contact, the big silver contact showed increased of postwelding shear strength, and silver contact convex surface top with
The situation that electrode glues glutinous, silver contact displacement, convex surface is subject to crushing is significantly reduced, and product percent of pass improves 19%.
It should be appreciated that the parameter being related in above example can be adjusted within the scope of the present invention, such as groove
Mouth width can arbitrarily be selected in the 10%~40% of silver contact diameter；And for example, the Surface of Sphere of electrode section, can be by milling cutter milling
Cut or Digit Control Machine Tool processing, can also be realized using other method of the prior art；In addition, notch shape can be cross
Type, three leaves are rotary-type, it is star-like can also be other shapes, it is not limited to the record in above-described embodiment；This is for this area
For technical staff, it is easily achieved on the basis of the record of description of the invention, therefore repeat no more.
Section Example of the invention is the foregoing is only, any limitation not is done to technical scope of the invention,
All any modifications made within the spirit and principles in the present invention, equivalent and improvement etc., should be included in guarantor of the invention
Within the scope of shield.
Claims (8)
1. a kind of ameliorative way of convex surface silver contact resistance brazing, it is characterised in that comprise the following steps：
(1) end face of silver contact resistance brazing electrode used therein head is processed into the Surface of Sphere of indent；
(2) end face center in electrode tip outputs several notch；
(3) external boundary to electrode indent Surface of Sphere carries out plain milling treatment；
(4) deburring treatment is carried out to notch border and cambered surface border；
(5) end face of electrode tip is compressed into convex surface silver contact component, then carries out resistance brazing.
2. method according to claim 1, it is characterised in that the ball that the end face of electrode tip is processed into indent
Face, is to process to be machined and realized by milling tool or Digit Control Machine Tool.
3. method according to claim 1, it is characterised in that the Surface of Sphere of indent has identical bent with silver contact convex surface
Rate.
4. method according to claim 1, it is characterised in that slotted in the end face center of electrode tip, be by milling cutter or
What the mode of wire cutting was realized.
5. method according to claim 1, it is characterised in that the shape of the notch of the electrode tip end face center is cross
Type, three leaves are rotary-type, star-like；The depth of notch is 0.1mm~3mm, and width is the 10%~40% of silver contact diameter.
6. method according to claim 1, it is characterised in that the plain milling treatment, refers to electrode head end with plain cutter
The external boundary in face carries out plain milling treatment so that electrode and the width of the contact area of silver contact are silver contact diameter after plain milling
5%~30%.
7. method according to claim 1, it is characterised in that when the plain milling is processed, milling cutter is parallel to electrode axis
Install, and plane motion is done along the plane perpendicular to axis.
8. method according to claim 1, it is characterised in that when the plain milling is processed, plain milling depth and depth of rebate phase
Same or different, its depth dimensions is no more than silver contact convex surface highly.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611157781.0A CN106825812B (en) | 2016-12-15 | 2016-12-15 | A kind of ameliorative way of convex surface silver contact resistance brazing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611157781.0A CN106825812B (en) | 2016-12-15 | 2016-12-15 | A kind of ameliorative way of convex surface silver contact resistance brazing |
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| CN106825812A true CN106825812A (en) | 2017-06-13 |
| CN106825812B CN106825812B (en) | 2019-07-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110142492A (en) * | 2019-06-06 | 2019-08-20 | 武汉钢铁有限公司 | Without splashing Progress in Automobile Galvanized Steel Sheets resistance spot welding method |
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| CN2746500Y (en) * | 2004-11-12 | 2005-12-14 | 乐清市东星电器有限公司 | Electric contact and welding electrode for welding electric contact |
| CN202114407U (en) * | 2011-05-05 | 2012-01-18 | 常州士林电机有限公司 | Spot welding electrode for lead of carbon brush and terminal |
| EP2712695A1 (en) * | 2012-09-28 | 2014-04-02 | Contico W-tec Automatisierungstechnik GmbH | Welding electrode, in particular for aluminium welding |
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| DE2421557A1 (en) * | 1973-05-15 | 1974-12-05 | Int Standard Electric Corp | PROCESS FOR ESTABLISHING ELECTRICAL CONTACTS |
| JPS61277122A (en) * | 1985-05-30 | 1986-12-08 | 田中貴金属工業株式会社 | Manufacture of electric contact |
| CN2746500Y (en) * | 2004-11-12 | 2005-12-14 | 乐清市东星电器有限公司 | Electric contact and welding electrode for welding electric contact |
| CN202114407U (en) * | 2011-05-05 | 2012-01-18 | 常州士林电机有限公司 | Spot welding electrode for lead of carbon brush and terminal |
| EP2712695A1 (en) * | 2012-09-28 | 2014-04-02 | Contico W-tec Automatisierungstechnik GmbH | Welding electrode, in particular for aluminium welding |
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| CN110142492A (en) * | 2019-06-06 | 2019-08-20 | 武汉钢铁有限公司 | Without splashing Progress in Automobile Galvanized Steel Sheets resistance spot welding method |
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| Publication number | Publication date |
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| CN106825812B (en) | 2019-07-12 |
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