CN103737147A - Method and device for improving welding quality of platinum wire and blade terminal - Google Patents

Method and device for improving welding quality of platinum wire and blade terminal Download PDF

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Publication number
CN103737147A
CN103737147A CN201310626681.8A CN201310626681A CN103737147A CN 103737147 A CN103737147 A CN 103737147A CN 201310626681 A CN201310626681 A CN 201310626681A CN 103737147 A CN103737147 A CN 103737147A
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CN
China
Prior art keywords
welding
lug plate
platinum filament
low pressure
equipment
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Application number
CN201310626681.8A
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Chinese (zh)
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CN103737147B (en
Inventor
金海柱
郭勇
仲进
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Suzhou Changfeng Aviation Electronics Co Ltd
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Suzhou Changfeng Aviation Electronics Co Ltd
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Priority to CN201310626681.8A priority Critical patent/CN103737147B/en
Publication of CN103737147A publication Critical patent/CN103737147A/en
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Publication of CN103737147B publication Critical patent/CN103737147B/en
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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
    • B23K9/00—Arc welding or cutting
    • B23K9/007—Spot arc 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
    • B23K9/00—Arc welding or cutting
    • B23K9/10—Other electric circuits therefor; Protective circuits; Remote controls
    • B23K9/1006—Power supply
    • B23K9/1043—Power supply characterised by the electric circuit
    • B23K9/105—Power supply characterised by the electric circuit by using discharge tubes or mechanical contactors
    • 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
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/36—Electric or electronic devices

Abstract

The invention relates to a machining method, in particular to a method for improving the welding quality of a platinum wire and a blade terminal. The method comprises the following steps: step 1, the blade terminal is bent; step 2, the platinum wire is placed inside the bent portion of the blade terminal; step 3, the parameters and the voltage of welding equipment are adjusted, wherein the voltage is a low voltage ranging from 30 V to 36 V; step 4, a graphite electrode tip is placed on the portion, to be welded to the platinum wire, of the blade terminal, the graphite electrode tip and the blade terminal keep in contact, and the pressure ranging from 4 N/cm<2> to 6 N/cm<2> is applied; step 5, a welding circuit is connected for welding by means of treading on the equipment, wherein the welding time lasts for 2 S-3 S. Due to the fact that low voltage output is adopted by carbon arc spot welding equipment, the safety of an operator is high; the method overcomes the defect of soldering in a traditional method, the connection strength and the reliability are both greatly improved, and the using requirement for a platinum resistor sensor is met.

Description

A kind of method and equipment thereof that improves platinum filament and lug plate welding quality
Technical field
The present invention relates to a kind of processing method, especially a kind of method that improves platinum filament and lug plate welding quality, also relates to the equipment for the method in addition.
Background technology
In aircraft industry sensor, platinum sensor occupies very large proportion now, because RTD stable performance, temperature range is wide, and intensity is high, and the Product Precision of manufacture is high, on aviation temperature sensor, uses in a large number; Wound-rotor type RTD is that platinum filament is wound on the skeleton of the insulating materials such as mica, pottery, make sensing element, but resistance is to export by plug housing, between platinum filament and plug housing, by lug plate, transfers; Adopt solder to connect platinum filament and lug plate before, because solder fluidity, feeding and wellability are poor, cause welding performance and weld strength to worsen, in weld seam cooling procedure, structural stress is excessive, cause platinum filament soldering often to rupture later, the final reliability of product can not be guaranteed.
Summary of the invention
The deficiencies such as the structural stress that existing solder causes RTD is excessive in order to overcome, easy fracture, the invention provides a kind of method and equipment thereof that improves platinum filament and lug plate welding quality.
The technical scheme that the present invention takes is:
A method that improves platinum filament and lug plate welding quality, comprises the following steps:
Step 1: by lug plate bending;
Step 2: platinum filament is put into bending inside;
Step 3: adjust welding equipment parameter,
Voltage: low pressure 30V～36V,
Step 4: graphite electrode head is positioned over to lug plate and platinum filament position to be welded, and both keep in touch, and apply 4N/cm 2～6N/cm 2pressure;
Step 5: step on equipment by pin and connect welding circuit, weld, the time is 2S～3S.
Above-mentioned welding equipment comprises that high input voltage transformer (6), low pressure output transformer (7), high input voltage transformer (6) power to low pressure output transformer (7) by external power supply, low pressure output transformer (7) one tunnels connect insulated handle (1), insulated handle (1) one end is provided with electrode, and electrode is graphite carbon rod (2); Low pressure output transformer (7) is separately leaded up to pin step on device (3) and is connected the clip (4) of holding workpiece.
Further, above-mentioned graphite carbon rod (2) termination is taper.
The welding method of graphitic carbon arc-welding, when principle is work, two electrode pressurization workpiece make double layer of metal under the pressure of two electrodes, form certain contact resistance, and welding current forms the thermal welding of moments when another electrode at 2 contact resistance points from an electrode stream, and welding current moment, from another electrode along so far electrode formation of two part flows loop, does not injure the internal structure of welded piece.Plumb joint adopts graphite to make, and termination is taper, and the sharp degree of conical nose is depending on the size of solder joint, general head diameter is 1mm～2mm, plumb joint, by hand-held, is convenient to the control of dynamics, after plumb joint and workpiece are had good positioning, by the break-make of pin step on device control loop, form welding current, platinum filament and lug plate welding are cemented, the method adopts hand-held plumb joint operation, workable, after welding, platinum filament and lug plate bonding strength are high.
Advantage/good effect: carbon arc spot-welding equipment is owing to adopting low pressure output, high to operator safety; Made up the deficiency of conventional method solder, its bonding strength and reliability all improve greatly, have met the instructions for use to platinum sensor.
Accompanying drawing explanation
Fig. 1 is the structural representation of graphitic carbon arc-welding machine;
Fig. 2 is lug plate and platinum filament welding schematic diagram;
Wherein, 1: insulated handle, 2: graphite carbon rod, 3: pin step on device, 4: clip, 5: external power supply, 6: high input voltage transformer, 7: low pressure output transformer, 8: lug plate, 9: platinum filament, 10: spot welding region.
The specific embodiment
Below in conjunction with Figure of description, the present invention is described in further detail.
A method that improves platinum filament and lug plate welding quality, comprises the following steps:
Step 1: by lug plate 8 bendings;
Step 2: platinum filament 9 is put into bending inside;
Step 3: switch on power 5, adjust welding equipment parameter, making welding circuit voltage is 30V～36V;
Step 4: graphite electrode head is positioned over to lug plate and platinum filament position 10 to be welded, and both keep in touch, and apply 4N/cm 2～6N/cm 2pressure;
Step 5: connect welding circuit by pin step on device 3, weld, the time is 2S～3S, cements lug plate and platinum filament fusion;
Above-mentioned welding equipment comprises that high input voltage transformer 6, low pressure output transformer 7, high input voltage transformer 6 power to low pressure output transformer 7 by external power supply, low pressure output transformer 7 one tunnels connect insulated handle 1, insulated handle 1 one end is provided with electrode, and electrode is graphite carbon rod 2; Low pressure output transformer 7 is separately leaded up to pin step on device 3 and is connected the clip 4 of holding workpiece.In use procedure, with clip 4, clamp lug plate 8, energising, then connects welding circuit by pin step on device 3, and hand-held insulated handle 1 welds welding position, and the time is 2S～3S, lug plate and platinum filament fusion is cemented, as shown in Figure 1, 2.
Above-mentioned electrode tip is taper, and head diameter is about 2mm, makes it similar with lug plate size, can better weld.
A few type platinum filament class thermal resistance sensor lug plates and the platinum filament produced all adopt graphitic carbon arc-welding, and after adopting graphitic carbon arc welding technique, reliability improves, and the product being delivered for use, in junction, fracture defect does not occur, and result of use is good.

Claims (3)

1. a method that improves platinum filament and lug plate welding quality, is characterized in that: comprise the following steps:
Step 1: by lug plate bending;
Step 2: platinum filament is put into bending inside;
Step 3: adjust welding equipment parameter,
Voltage: low pressure 30V～36V,
Step 4: graphite electrode head is positioned over to lug plate and platinum filament position to be welded, and both keep in touch, and apply 4N/cm 2～6N/cm 2pressure;
Step 5: step on equipment by pin and connect welding circuit, weld, the time is 2S～3S.
2. one kind is improved the equipment of platinum filament and lug plate welding quality, it is characterized in that: comprise that high input voltage transformer (6), low pressure output transformer (7), high input voltage transformer (6) power to low pressure output transformer (7) by external power supply, low pressure output transformer (7) one tunnels connect insulated handle (1), insulated handle (1) one end is provided with electrode, and electrode is graphite carbon rod (2); Low pressure output transformer (7) is separately leaded up to pin step on device (3) and is connected the clip (4) of holding workpiece.
3. the equipment of raising platinum filament according to claim 2 and lug plate welding quality, is characterized in that: graphite carbon rod (2) termination is taper.
CN201310626681.8A 2013-11-28 2013-11-28 A kind of method improving platinum filament and lug plate welding quality and equipment thereof Active CN103737147B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310626681.8A CN103737147B (en) 2013-11-28 2013-11-28 A kind of method improving platinum filament and lug plate welding quality and equipment thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310626681.8A CN103737147B (en) 2013-11-28 2013-11-28 A kind of method improving platinum filament and lug plate welding quality and equipment thereof

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CN103737147A true CN103737147A (en) 2014-04-23
CN103737147B CN103737147B (en) 2016-10-19

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106493444A (en) * 2016-12-03 2017-03-15 无锡职业技术学院 High performance graphite material superconduction welding system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB472363A (en) * 1935-11-21 1937-09-22 Elin Ag Elek Ind Wien Improvements in or relating to carbon arc welding
CN1069527A (en) * 1991-08-09 1993-03-03 东北重型机械学院 Carbon arc carburizing
CN2187087Y (en) * 1993-07-27 1995-01-11 蒋路平 Energy-saving carbon arc welding or cutting machine
CN201455507U (en) * 2009-08-07 2010-05-12 中国十五冶金建设有限公司 Special arc striking device for welding copper bus
KR20110039980A (en) * 2009-10-13 2011-04-20 대우조선해양 주식회사 Cooling device for welding carriage

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB472363A (en) * 1935-11-21 1937-09-22 Elin Ag Elek Ind Wien Improvements in or relating to carbon arc welding
CN1069527A (en) * 1991-08-09 1993-03-03 东北重型机械学院 Carbon arc carburizing
CN2187087Y (en) * 1993-07-27 1995-01-11 蒋路平 Energy-saving carbon arc welding or cutting machine
CN201455507U (en) * 2009-08-07 2010-05-12 中国十五冶金建设有限公司 Special arc striking device for welding copper bus
KR20110039980A (en) * 2009-10-13 2011-04-20 대우조선해양 주식회사 Cooling device for welding carriage

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
杨猛: "铝母线的碳弧焊接", 《四川建筑》, vol. 29, no. 5, 28 October 2009 (2009-10-28) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106493444A (en) * 2016-12-03 2017-03-15 无锡职业技术学院 High performance graphite material superconduction welding system

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