CN2623400Y - Rod shaped hemi-spherical electrode - Google Patents
Rod shaped hemi-spherical electrode Download PDFInfo
- Publication number
- CN2623400Y CN2623400Y CN 03218921 CN03218921U CN2623400Y CN 2623400 Y CN2623400 Y CN 2623400Y CN 03218921 CN03218921 CN 03218921 CN 03218921 U CN03218921 U CN 03218921U CN 2623400 Y CN2623400 Y CN 2623400Y
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- CN
- China
- Prior art keywords
- electrode
- head
- rod
- bar
- hemi
- Prior art date
- 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.)
- Expired - Lifetime
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- Resistance Welding (AREA)
Abstract
The utility model relates to a resistance welding tool, in particular to a rod shaped hemi-spherical electrode for resistance welding, comprising an electrode head, an electrode rod and an electrode tail; wherein, the electrode head is connected to the upper part of the electrode rod; the electrode tail is connected with the lower part of the electrode rod; the maximum curvature radius of the camber of the electrode head is smaller than the diameter of an electrode bar; a multiedge plate plane is arranged on the back half of the electrode rod; the end face of the electrode head takes the a shape of hemi-sphere or partial hemi-sphere; a value around the radial of the electrode rod is adopted for the curvature radius of the camber of the electrode head; an electrode holder in the electrode tail takes the shape of cornet, column or thread. The utility model adopts the electrode with a small curvature radius, improving the wielding intensity, reaching the goals of quick temperature rise, quick and good formation, and deep weld penetration rate, and prevention of rejection of workpieces.
Description
One, technical field
The utility model relates to a kind of resistance welded instrument, is specially adapted to weld the bar-shaped dome electrode of resistance.
Two, background technology
At present in the colored picture tube production field, stick electrode head end shape radius of curvature minimum of a value equals the electrode bar diameter, when the pair of electrodes that adopts same material and same shape, when welding foreign material or different-thickness material of the same race, the workpiece material of maximum temperature deflection slab, conductance and the thermal conductance rate variance of welding point causes the nugget skew.The most nuggets that form are distributed in a side of slab or conductance and poor thermal conductivity, and nugget is offset when serious, can cause nugget only to be positioned at slab one side and welding failure, the nugget size on the faying face are reduced, and influence strength character.
When welding the good aluminium of electrical conductivity and thermal conductivity, copper and alloy material, though adopt big electric current, big voltage, the welding of deep camber cambered surface electrode, respectively cooling velocity is accelerated in the welding crystallisation by cooling stage, the welding position causes workpiece quench hardening weldering nuclear and interior external crack, peel off the fracture of weldering nuclear end face, cause workpiece to be scrapped.Simultaneously, because it is big that deep camber cambered surface electrode head end face and workpiece contact-making surface become, and transition length increases before making electric current enter workpiece, it is big that the current expansion at the contact-making surface place of electric current line in workpiece becomes, thereby cause current density be uniformly dispersed of electrode and workpiece middle part to the edge, make the middle part current density deficiency of electrode and plate contact-making surface, cause electrode to broaden in high temperature and high pressure bottom electrode head end oxidation conquassation, current density, pressure become with contact-making surface and reduce greatly, and weldering nuclear size, penetration rate, weld strength reduce simultaneously.The oxide layer thickening, the oxidation flange is big, and electrode life is short, the production cost height.
Three, utility model content
In order to overcome above-mentioned deficiency, the utility model purpose is to provide a kind of weld strength height, the good bar-shaped dome electrode of welding penetration rate.
Realize that the technical solution of the utility model is to solve like this: a kind of bar-shaped dome electrode, comprise that electrode head, electrode head link to each other with electrode stem portion upper end, the electrode stem subordinate holds and connects the electrode afterbody, its improvements are, the maximum of the radius of curvature of electrode head curved surface is less than the diameter of electrode bar, and electrode stem portion latter half of has many ribs board plane.
Because the utility model has adopted the electrode of small curvature radius, has improved weld strength, has avoided workpiece to scrap the generation of situation.
Advantage is:
1, bar-shaped dome electrode can obtain electric arc effect preferably, has higher electron emissivity, current capacity preferably, and the electric current penetration power is strong, and the plumb joint temperature rises fast, and moulding is fast, forming, penetration rate is dark.
2, improved weld strength.
3, reduce the oxide layer and the flange of electrode, prolonged electrode life.
4, can prevent the soft standard welding of fragility joint and joint crackle, using electricity wisely.
Four, description of drawings
Accompanying drawing is the structural representation of bar-shaped dome electrode;
Five, the specific embodiment
Accompanying drawing is a specific embodiment of the present utility model;
Below in conjunction with accompanying drawing structural principle of the present utility model is described further:
Shown in accompanying drawing, bar-shaped dome electrode, comprise that electrode head 1, electrode head 1 link to each other with electrode stem portion 2 upper ends, electrode stem portion 2 lower ends connect electrode afterbody 4, the maximum of the radius of curvature of electrode head 1 curved surface is less than the diameter of electrode bar, electrode stem portion 2 latter half of has many ribs board plane 3, and the minimum thickness of many ribs board plane 3 guarantees electrodes transfer welding pressure and enough pole strengths, guarantees that electrode is indeformable.The radius of curvature value of electrode head 1 curved surface adopts near the value of electrode bar radius.Electrode head 1 end surface shape is hemispherical or part hemispherical.The electrode holder of electrode afterbody 4 adopts conical, cylindrical or thread-shaped, and its tapering is selected according to the maximum pressure of bar electrode diameter or welding.Bar-shaped dome electrode nominal diameter can be selected according to the maximum pressure of electrode.
The course of work: spring leaf is respectively charged on pin and the support, again framework is put into assigned address, starting device, the working cylinder in the framework outside in the equipment is started working, the dome electrode on the drive external electrode seat and the dome electrode of framework inboard are simultaneously to framework and spring leaf pressurization, welding controller sends instruction, provide welding current by transformer, electric current is by the electrode head 1 of two halves spheric electrode, framework and the spring leaf that is clamped between two electrodes carried out the resistor pressure welding, form the connection procedure of weldering nuclear, the assembling of implementation framework spring lamination.
Claims (3)
1, a kind of bar-shaped dome electrode, comprise that electrode head (1), electrode head (1) link to each other with electrode stem portion (2) upper end, electrode stem portion (2) lower end connects electrode afterbody (4), it is characterized in that, the maximum of the radius of curvature of electrode head (1) curved surface is less than the diameter of electrode bar, and electrode stem portion (2) latter half of has many ribs board plane (3).
2, bar-shaped dome electrode according to claim 1 is characterized in that, the radius of curvature value of electrode head (1) curved surface adopts near the value of electrode bar radius.
3, bar-shaped dome electrode according to claim 1 is characterized in that, the electrode holder of electrode afterbody (4) adopts conical, cylindrical or thread-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03218921 CN2623400Y (en) | 2003-05-21 | 2003-05-21 | Rod shaped hemi-spherical electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03218921 CN2623400Y (en) | 2003-05-21 | 2003-05-21 | Rod shaped hemi-spherical electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2623400Y true CN2623400Y (en) | 2004-07-07 |
Family
ID=34244095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03218921 Expired - Lifetime CN2623400Y (en) | 2003-05-21 | 2003-05-21 | Rod shaped hemi-spherical electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2623400Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100439026C (en) * | 2005-06-23 | 2008-12-03 | 彩虹集团电子股份有限公司 | Thermocompression bend welding technology of metal component part |
-
2003
- 2003-05-21 CN CN 03218921 patent/CN2623400Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100439026C (en) * | 2005-06-23 | 2008-12-03 | 彩虹集团电子股份有限公司 | Thermocompression bend welding technology of metal component part |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: IRICO GROUP ELECTRONICS CO., LTD. Free format text: FORMER OWNER: CAIHONG COLOUR KINESCOPE GENERAL FACTORY Effective date: 20041210 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20041210 Address after: 712021 No. 1 Rainbow Road, Shaanxi, Xianyang Patentee after: IRICO Group Electronics Co., Ltd. Address before: 712021 No. 1 Rainbow Road, Shaanxi, Xianyang Patentee before: Caihong Color CRT General Factory |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130521 Granted publication date: 20040707 |