CN102856101A - Manufacturing method for friction welding type electrode contact - Google Patents
Manufacturing method for friction welding type electrode contact Download PDFInfo
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- CN102856101A CN102856101A CN2012103008561A CN201210300856A CN102856101A CN 102856101 A CN102856101 A CN 102856101A CN 2012103008561 A CN2012103008561 A CN 2012103008561A CN 201210300856 A CN201210300856 A CN 201210300856A CN 102856101 A CN102856101 A CN 102856101A
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- tactile bridge
- type electrode
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Abstract
The invention relates to the technical field of electric contact material, in particular to an electrode contact, and provides a manufacturing method for a friction welding type electrode contact. The method comprises the following steps of 1) manufacturing a contact point; 2) connecting the contact point and a contact bridge, wherein in step 2), the contact point and the contact bridge are respectively fixed on a rotary friction welding machine; and the contact point and the contact bridge are connected by a friction welding way. By adopting the technical scheme, the contact point and the contact bridge are welded by the friction welding way, so that the manufacturing method has the advantages of high strength in welding part, no damage in mechanical performance, no change in quality of the contact bridge and the like; and moreover, the contact formed by friction welding is high in strength, excellent in performance and has no intermediate phase.
Description
Technical field
The present invention relates to the electrical contact material technical field, be specifically related to a kind of electrode contact.
Background technology
Contact and tactile bridge are applied in the various contactors usually.The electric contact that touches on the bridge is the contact element of appliance switch, mainly undertaking connection, open circuit, reach the task of connection, disconnecting consumers electric current, electric contact and arc quenching system are the hearts of appliance switch, the fail safe of appliance switch, reliability and cut-off and close and close physical property and the electrical characteristics thereof that characteristic depends on electric contact material to a great extent.Therefore the performance of electric contact material directly affects the reliability service of appliance switch and associated electrical appliance equipment.
Existing contact and common traditional soldering or the integral sintered form of adopting of being connected of tactile bridge.Although traditional soldering can realize the welding of any shape, low, the tactile bridge of its weld strength is subjected to thermal softening easily.Integral sintered mode is that a kind of zero defect directly welds, and weld strength is also higher, but cooling rate and shape affect the tactile bridge that touches bridge structure, especially chromium-copper material greatly when integral sintered, cause behind the sintering and touch the inner metallographic heterogeneity of bridge.In addition, segregation is assembled at the integral sintered tactile bridge inner element concentration increase in welding position, the tactile bridge position of causing easily easily, easily causes and touches the overall performance that the tactile bridge of deviation effects appears in the whole composition of bridge; And integral sintered technique needs accurately temperature to be controlled, and technology difficulty is large, and the waste product generation rate is high.
Summary of the invention
The object of the invention is to, a kind of manufacture method of friction welding type electrode contact is provided, solve above technical problem.
Technical problem solved by the invention can realize by the following technical solutions:
The manufacture method of friction welding type electrode contact comprises 1) manufacturing of contact, 2) contact is connected with tactile bridge, it is characterized in that, step 2) in, described contact and described tactile bridge are separately fixed on the spin friction bonding machine, and the contact adopts the mode of friction welding to connect with being connected of tactile bridge.
Contact of the present invention and tactile bridge have been abandoned and have been adopted traditional welding manner, adopted integral sintered mode, but adopt the mode of friction welding to connect.Have following advantage: compare with traditional welding manner, traditional welding is easily because bridge generation ruckbildung is touched in heat conduction, and the friction welding mode is the zero defect welding, and tactile bridge can not soften, and heating part is only limited to the welding position; Compare with integral sintered mode, integral sintered mode is higher to temperature control requirement, and with the composition variation of avoiding the welding position and the gathering segregation of touching the bridge position, friction welding mode weld strength is high, the welding stable homogeneous.In addition, the phenomenon that dissolves in integral sintered can not appear in friction welding.Metallographic before and after the welding of friction welding does not change.
In the step 1), the CuW(copper-tungsten is adopted in the contact), the manufacturing of CuW can adopt existing technology to make, and also can adopt following steps:
A) mixed powder: copper powder and tungsten powder are carried out the stuffing mixing;
B) compacting: the powder a) is formed, form alloy preform;
C) degreasing: alloy preform is carried out degreasing;
D) sintering: the alloy preform after the degreasing is carried out sintering, the powder combination in the alloy preform;
E) molten oozing: the alloy preform behind the sintering carries out copper and fills.
Described tactile bridge can adopt the tactile bridge of fine copper (T2) material, the tactile bridge of chromium-copper (QCr) material or the tactile bridge of iron (Fe) material.
Described spin friction bonding machine comprises a rolling clamp and a movable clamp, and described contact is arranged on the described rolling clamp, and described tactile bridge is arranged on the described movable clamp; Carry out friction welding by the rotation of control rolling clamp, the displacement of movable clamp.
Described spin friction bonding machine comprises a microprocessor system, and described microprocessor system connects and connects described rolling clamp by rotating mechanism, and described microprocessor system connects described movable clamp by travel mechanism;
Described microprocessor system connects a temperature sensor, and described temperature sensor is arranged on in rolling clamp or the movable clamp one; Temperature sensor produces the temperature information of heat when rubbing for detection of contact and tactile bridge, and sending temperature information to described microprocessor system, described microprocessor system is according to the rotating speed of temperature information control rotating mechanism and the displacement of travel mechanism.Adopt the present invention of above-mentioned technology, in carrying out friction welding process, the temperature of welding position can be effectively controlled, and guarantees that the welding position without assembling segregation, touches the bridge position and do not produce the metallographic variation.
Described microprocessor system also connects a speed probe, a pressure sensor, and described speed probe detects the rotating speed of described rotating mechanism, and described pressure sensor detects described tactile bridge to the power that applies of contact.Traditional friction welding needs the welding between the identical material, and electric contact industry traditional handicraft also thinks, can't realize high strength between copper-tungsten and copper, chromium-copper and the iron and meet the friction welding of weld strength.And technique of the present invention is the friction welding of unlike material between copper-tungsten and copper, chromium-copper and the iron, the performances such as the intensity of bi-material between separately, thermal stability are different, guarantee the intensity of two kinds of friction weldings between the unlike material, the present invention adopts welding parameters, such as the control to the pressure between equipment rotating speed, contact and the tactile bridge, realize between CuW alloy and fine copper, chromium-copper and the Fe or the welding between the different materials, the electrode contact of welding performance excellence is provided for High-voltage Switchgear Industry.
Described spin friction bonding machine also comprises a heater, and the heating end of described heater is towards described rolling clamp, and described heater is used for the welding position of contact is heated, in order to realize as early as possible the contact-making surface fusing of contact and tactile bridge.
Beneficial effect: owing to adopt technique scheme, the present invention adopts mode solder contacts and the tactile bridge of friction welding, have welding position intensity high, do not damage mechanical performance, touch the advantages such as the bridge quality is unchanged.The contact intensity that adopts friction welding to form is high, without middle phase, excellent performance.
Description of drawings
Fig. 1 is schematic flow sheet of the present invention;
Fig. 2 is the schematic flow sheet of friction welding (FW) connection of the present invention;
Fig. 3 is that integral sintered product are from the metallographic schematic diagram of welding position 30mm distance;
Fig. 4 is that the friction welding product are from the metallographic schematic diagram of welding position 30mm distance;
Fig. 5 is the metallographic schematic diagram of friction welding product welding position.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, further set forth the present invention below in conjunction with concrete diagram.
With reference to Fig. 1, the manufacture method of friction welding type electrode contact comprises the steps:
The first step, the manufacturing of contact: CuW is adopted in the contact, and the manufacturing of CuW can adopt existing technology to make, and also can adopt following steps: a) mixed powder: copper powder, tungsten powder are carried out stuffing mix; B) compacting: the powder a) is formed, form alloy preform; C) degreasing: alloy preform is carried out degreasing; D) sintering: the alloy preform after the degreasing is carried out sintering, the powder combination in the alloy preform; E) molten oozing: the alloy preform behind the sintering carries out copper and fills.
Tactile bridge can adopt the tactile bridge of fine copper (T2) material, the tactile bridge of chromium-copper (QCr) material or the tactile bridge of iron (Fe) material.
Second step, the contact is connected with tactile bridge: contact and tactile bridge are separately fixed on the spin friction bonding machine, and the contact adopts the mode of friction welding to connect with being connected of tactile bridge.
Contact of the present invention and tactile bridge have been abandoned and have been adopted traditional welding manner, adopted integral sintered mode, but adopt the mode of friction welding to connect.Have following advantage: compare with traditional welding manner, traditional welding is easily because bridge generation ruckbildung is touched in heat conduction, and the friction welding mode is the zero defect welding, and tactile bridge can not soften, and heating part is only limited to the welding position; Compare with integral sintered mode, integral sintered mode is higher to temperature control requirement, and with the composition variation of avoiding the welding position and the gathering segregation of touching the bridge position, friction welding mode weld strength is high, the welding stable homogeneous.In addition, the phenomenon that dissolves in integral sintered can not appear in friction welding.Metallographic before and after the welding of friction welding does not change.
With reference to Fig. 2, the spin friction bonding machine comprises a rolling clamp and a movable clamp, and the contact is arranged on the rolling clamp, and tactile bridge is arranged on the movable clamp.Carry out friction welding by the rotation of control rolling clamp, the displacement of movable clamp.The spin friction bonding machine comprises a microprocessor system, and the microprocessor system connects by rotating mechanism and connects rolling clamp, and the microprocessor system connects movable clamp by travel mechanism.The microprocessor system connects a temperature sensor, and temperature sensor is arranged on in rolling clamp or the movable clamp one; Temperature sensor produces the temperature information of heat when the friction for detection of contact and tactile bridge, and sends temperature information to the microprocessor system, and the microprocessor system is according to the rotating speed of temperature information control rotating mechanism and the displacement of travel mechanism.Adopt the invention of above-mentioned technology, in carrying out friction welding process, the temperature of welding position can be effectively controlled, and guarantees that the welding position changes without composition, touches the bridge position and does not produce the metallographic variation.
The microprocessor system also connects a speed probe, a pressure sensor, and speed probe detects the rotating speed of rotating mechanism, and pressure sensor detects and touches bridge to the power that applies of contact.Because technique of the present invention is the friction welding between the unlike material, the performances such as the intensity of bi-material between separately, thermal stability are different, guarantee the intensity of two kinds of friction weldings between the unlike material, the present invention adopts welding parameters, such as the control to the pressure between equipment rotating speed, contact and the tactile bridge, realize between CuW alloy and fine copper, chromium-copper and the Fe or the welding between the different materials, the electrode contact of welding performance excellence is provided for High-voltage Switchgear Industry.
The spin friction bonding machine also comprises a heater, and the heating end of heater is towards rolling clamp, and heater is used for the welding position of contact is heated, in order to realize as early as possible the contact-making surface fusing of contact and tactile bridge.
Adopt friction welding (FW) connection of the present invention with the mode that contact and tactile bridge welding connect, compare with traditional brazing mode, integral sintered mode, have following difference:
Adopt friction welding (FW) connection of the present invention, compare with integral sintered, weld strength is close, the welding rate high, and all is zero defect welding.But adopt the friction welding (FW) connection to have the characteristics of stable mechanical performance, metallographic homogeneous.The present invention with friction welding and integral sintered after the welding position compare, be at the metallographic from welding position 30mm place after the welding of integral sintered method with reference to Fig. 3, the grain size of integral sintered product differs, cooling rate during welding and shape have had influence on the metallographic of crystallization, cause final products metallographic heterogeneity, the material property of different solids, different parts can be different.With reference to Fig. 4, the metallographic of friction welding (FW) connection before and after welding changes hardly.Because changing and changes in material properties without metallographic, so only need by checking the mechanical performance after just can judging welding before welding.With reference to Fig. 5, the friction welding product are high in metallographic homogeneous, the weld strength of welding position, obscission can not occur.
More than show and described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that describes in above-described embodiment and the specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (7)
1. the manufacture method of friction welding type electrode contact comprises 1) manufacturing of contact, 2) contact is connected with tactile bridge, it is characterized in that, step 2) in, described contact and described tactile bridge are separately fixed on the spin friction bonding machine, and the contact adopts the mode of friction welding to connect with being connected of tactile bridge.
2. the manufacture method of friction welding type electrode contact according to claim 1 is characterized in that, in the step 1), CuW is adopted in the contact, and following steps are adopted in the manufacturing of CuW:
A) mixed powder: copper powder, tungsten powder are carried out stuffing mix;
B) compacting: the powder a) is formed, form alloy preform;
C) degreasing: alloy preform is carried out degreasing;
D) sintering: the alloy preform after the degreasing is carried out sintering, the powder combination in the alloy preform;
E) molten oozing: the alloy preform behind the sintering carries out copper and fills.
3. the manufacture method of friction welding type electrode contact according to claim 2 is characterized in that, described tactile bridge adopts a kind of in the tactile bridge of the tactile bridge of tactile bridge, chromium-copper material of fine copper material or iron material matter.
4. according to claim 1, the manufacture method of 2 or 3 described friction welding type electrode contacts, it is characterized in that, described spin friction bonding machine comprises a rolling clamp and a movable clamp, and described contact is arranged on the described rolling clamp, and described tactile bridge is arranged on the described movable clamp; Carry out friction welding by the rotation of control rolling clamp, the displacement of movable clamp.
5. the manufacture method of friction welding type electrode contact according to claim 4, it is characterized in that, described spin friction bonding machine comprises a microprocessor system, described microprocessor system connects and connects described rolling clamp by rotating mechanism, and described microprocessor system connects described movable clamp by travel mechanism;
Described microprocessor system connects a temperature sensor, and described temperature sensor is arranged on in rolling clamp or the movable clamp one; Temperature sensor produces the temperature information of heat when rubbing for detection of contact and tactile bridge, and sending temperature information to described microprocessor system, described microprocessor system is according to the rotating speed of temperature information control rotating mechanism and the displacement of travel mechanism.
6. the manufacture method of friction welding type electrode contact according to claim 5, it is characterized in that, described microprocessor system also connects a speed probe, a pressure sensor, described speed probe detects the rotating speed of described rotating mechanism, and described pressure sensor detects described tactile bridge to the power that applies of contact.
7. the manufacture method of friction welding type electrode contact according to claim 5, it is characterized in that, described spin friction bonding machine also comprises a heater, and the heating end of described heater is towards described rolling clamp, and described heater is used for the welding position of contact is heated.
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| CN2012103008561A CN102856101A (en) | 2012-08-22 | 2012-08-22 | Manufacturing method for friction welding type electrode contact |
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| CN2012103008561A CN102856101A (en) | 2012-08-22 | 2012-08-22 | Manufacturing method for friction welding type electrode contact |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104057257A (en) * | 2014-06-25 | 2014-09-24 | 中国西电电气股份有限公司 | Method for manufacturing shielding bolt contact |
| CN105397279A (en) * | 2015-12-29 | 2016-03-16 | 陕西斯瑞工业有限责任公司 | Welding method of copper-chromium load switch component |
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| CN1593834A (en) * | 2003-09-11 | 2005-03-16 | 波音公司 | Apparatus and method for friction stir welding with a variable speed pin |
| CN1820887A (en) * | 2006-03-23 | 2006-08-23 | 汉中双戟摩擦焊接制造技术有限责任公司 | Friction welding method for high voltage power transmission and transforming contact |
| CN101667498A (en) * | 2009-10-13 | 2010-03-10 | 昆明理工大学 | Preparation method of W-Cu electrical contact |
| CN102049607A (en) * | 2009-10-30 | 2011-05-11 | 北京石油化工学院 | System for measuring friction stitch welding stress and temperature |
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2012
- 2012-08-22 CN CN2012103008561A patent/CN102856101A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1593834A (en) * | 2003-09-11 | 2005-03-16 | 波音公司 | Apparatus and method for friction stir welding with a variable speed pin |
| CN1820887A (en) * | 2006-03-23 | 2006-08-23 | 汉中双戟摩擦焊接制造技术有限责任公司 | Friction welding method for high voltage power transmission and transforming contact |
| CN101667498A (en) * | 2009-10-13 | 2010-03-10 | 昆明理工大学 | Preparation method of W-Cu electrical contact |
| CN102049607A (en) * | 2009-10-30 | 2011-05-11 | 北京石油化工学院 | System for measuring friction stitch welding stress and temperature |
Non-Patent Citations (1)
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| 王笑川等: "《摩擦焊模块化测控系统实现》", 《机械工程学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104057257A (en) * | 2014-06-25 | 2014-09-24 | 中国西电电气股份有限公司 | Method for manufacturing shielding bolt contact |
| CN105397279A (en) * | 2015-12-29 | 2016-03-16 | 陕西斯瑞工业有限责任公司 | Welding method of copper-chromium load switch component |
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Application publication date: 20130102 |