Mazhinji ekupikisa welding controllers anoshaya kuverenga kune welding ikozvino uye force.Naizvozvo, ipfungwa yakanaka kutenga yakatsaurirwa inotakurika inotakurika welding ammeter uye dynamometer.
Resistance spot welding inotaridzika iri nyore uye iri nyore kudzamara weld yatsemuka, panguva iyo maitiro acho anongoerekana atora padanho idzva rekukosha.
Kusiyana nearc welding, iyo inoburitsa pass iyo iri nyore kuongorora nekuona, spot welds inoratidzika seyakajairika, asi inogona kuramba ichiparadzana nekuda kwekushaikwa kweiyo fusion.Zvisinei, haisi mhosva yekuita.Izvi zvinogona kuratidza kuti nzvimbo yako welder. idiki kana kumisikidzwa zvisizvo pakushandisa.
Kunyange muchina mudiki, wakareruka ungave wakakodzera kune mamwe maapplication, iwe unofanirwa kuve neruzivo rwakakwana kuitira kuti uzive zvauri kuwana usati waita inivhesiti.
Resistance spot welding yakasiyana nekuti inzira inomhanya-mhanya yekubatanidza simbi pasina kuwedzera simbi yekuzadza. Kana welder yekudzivirira yanyatsokura uye yakamiswa, kuiswa kwenzvimbo yekupisa kwakadzorwa kwakagadzirwa nekupokana kwesimbi kune welding ikozvino. inogadzira mubatanidzwa wakasimba wakaumbwa - unonzi nugget.Yakarurama clamping simba zvakare yakakosha shanduko sezvo inobatsira kuona kuramba.
Kana ikashandiswa nemazvo, resistance spot welding ndiyo inokurumidza, yakasimba uye yakachipa nzira yekubatanidza simbi sheets.Zvisinei, kunyange zvazvo spot welding yakashandiswa mukugadzira kwemakore anopfuura 100, haisati yanyatsonzwisiswa kunze kweindasitiri yemotokari.
Kunyange zvazvo nzira yacho ingaratidzika seyakareruka, unofanira kunzwisisa zvakawanda zvakasiyana-siyana uye kuti ungagadzirisa sei chimwe nechimwe kuti uwane chibereko chaunoda-chibatanidza chakaumbwa chakasimba kudarika simbi yepasi.
Resistance spot welding ine zvinhu zvitatu zvakakosha zvinofanirwa kugadzikwa nemazvo. Izvi zvinogona kunzi FCT:
Resistance spot welding inotaridzika iri nyore uye iri nyore kudzamara weld yatsemuka, panguva iyo maitiro acho anongoerekana atora padanho idzva rekukosha.
Kukundikana kunyatsonzwisisa kukosha kwezvinhu izvi uye hukama huri pakati pavo hunogona kukonzera kushaya simba, kusina kunaka welds.Zvinosuruvarisa, matambudziko aya anowanzopomerwa pamusoro pemaitiro acho pachawo, izvo zvakaita kuti zvitoro zvitsive zvishoma nezvishoma uye zvinodhura zvikuru simbi yekubatanidza nzira dzakadai. searc welding, riveting, riveting uye zvinonamira.
Kusarudza nzvimbo yekudzivirira yemagetsi uye controller inogona kuvhiringa varidzi vezvitoro nekuti kune mabhurendi akawanda uye mitengo yemhando yekusarudza kubva.Kuwedzera kune anowanzo shandiswa AC resistance welder, epakati frequency DC uye capacitor discharge modhi dzavapo.
Electronic controls yakaiswa paresistance welders inowanzova yemhando dzakasiyana uye sarudzo dzemunhu.Kuwedzera pakudzora weld nguva uye amperage, mazhinji emazuva ano ekutonga mamodhi ikozvino anosanganisira digitally programmable zvinhu izvo zvaimbodhura sarudzo, senge upslope uye pulsation.Vamwe vanotopa mhinduro uye welding process yekutarisa seyakavakirwa-mukati maficha.
Nhasi, akawanda anouyiswa kunze kwenyika anotengeswa ari kutengeswa kuUnited States, asi vashoma chete ndivo vanosangana neHeavy Duty Resistance Welding Manufacturing Alliance (RWMA) amperage uye simba rekumanikidza.
Mimwe michina yakakurisa uye inofananidzwa zvichibva pane yavo kilovolt-ampere (KVA) ratings, uye vanogadzira welder vanogona kushandura zviyero zvekupisa kuti vawedzere kugona kwemichina yavo, izvo zvinogona kuvhiringa vatengi.
Iyo RWMA industry standard inoda ma spot welders kuti agadziriswe ne transformer ine 50% duty cycle rating.The duty cycle inoyera chikamu chenguva iyo transformer inogona kuitisa ikozvino pasina kupisa mukati meminiti imwe yekubatanidza.Kukosha uku kunoshandiswa kuona kuti magetsi zvidimbu hazvishande pamusoro pesimba ravo rekupisa.Zvisinei, kuvhiringa vatengi, vamwe vanogadzira muchina vanoyera ma transformer avo pa10% chete, iyo inodarika kaviri nameplate yavo KVA rating.
Zvakare, KVA ratings kazhinji haina hukama neiyo chaiyo welding kugona kwenzvimbo welder.Inowanikwa yechipiri welding ikozvino kubuda inosiyana zvakanyanya nekureba kweruoko (huro hwehuro) hwemuchina, gap rakamira pakati pemaoko, uye yechipiri voltage transformer.
Sezvinoita mvura kudzvinyirirwa, magetsi etransformer yechipiri anofanira kunge akakwirira zvakakwana kuti asundire yechipiri welding ikozvino kunze kwetransformer uye kuburikidza neruwoko rwemhangura rwemhangura uye spot welding electrode (tip).
Chechipiri chinobuda chespot welding transformer chinowanzova 6 kusvika 8 V chete, kana chikumbiro chako chewelding chichida muchina wakadzika wehuro neruoko rurefu, ungangoda transformer ine high secondary voltage rating kuti ukunde inductance yehombe yechipiri loop. .
Kana welder inopikisa yakanyatsokura uye yakagadzika, kushandiswa kwenzvimbo yekushisa kwakanyatsorongedzwa kunogadzirwa nekupikisa kwesimbi kune welding ikozvino inogadzira mubatanidzwa wakasimba wakagadzirwa - unonzi nugget.
Izvi zvinonyanya kuitika kana nzvimbo yewelding ichida kuti chikamu chitakurwe zvakadzika muhuro yemuchina.Simbi muhuro inokanganisa magnetic field pakati pemaoko uye inobira muchina weusable welding amplifier.
The welding forging force inowanzogadzirwa ne cylinder.Semuenzaniso, pamushini wemaoko ekuswing, simba rinowanikwa rekugadzira rinosiyana zvichienderana nereshiyo yehurefu hwemaoko kusvika kure kwe cylinder kana tsoka tsvimbo kubva pa fulcrum.Nemamwe mashoko. , kana ruoko rupfupi ruchitsiviwa neruoko rurefu, simba rinowanikwa rekushongedza richaderedzwa zvikuru.
Michina inoitwa netsoka inoda kuti mutyairi asundire pasi pachitsigiro chetsoka chemuchina kuti adzime maelectrodes.Nekuda kwesimba shoma remushandisi, michina iyi haiwanzo gadzira simba rekugadzira rinodiwa kuti rizadzise zvinonyanya kudiwa zveClass A spot weld.
Class A spot welds ane simba repamusoro uye rinoyevedza kutaridzika.Iyi mhedzisiro yakagadziridzwa yakawanikwa nekuseta muchina kuti ubudise yakakwira yechipiri amperage, nguva pfupi yewelding, uye simba rakakodzera.
Izvo zvinofanirwa kucherechedzwa kuti iyo welding simba inoda kunge iri munzvimbo yakakodzera.Kunyanya kuderera kwesimba kumisa kunogona kuita kuti simbi inoputika uye yakadzika dented, jagged-inotaridzika nzvimbo welds.Kuisa yakakwirira zvakanyanya kunoderedza kushomeka kwemagetsi pajoinhi, nekudaro kuderedza. Weld simba uye ductility.Kusarudza Right Welding Schedule Machati anoronga Kirasi A, B uye C marongero emichina yemhando dzakasiyana-siyana dzesimbi dzakabatanidzwa mumabhuku ereferensi akadai seRWMA's Resistance Welding Handbook, Revised 4th Edition.Kunyange zvazvo maweldhi eKirasi C achiri akasimba, iwo zvinowanzoonekwa sezvisingagamuchirwi nekuda kwenzvimbo yakakura yekupisa (HAZ) nekuda kwekurebesa welding nguva.Somuenzaniso, zvidimbu zviviri zvekuchenesa 18-ga.Simbi yakapfava ine giredhi A spot weld specification ye10,300 weld amps, 650 lbs. Welding force uye 8 welding time cycles. (One cycle inongova 1/60th yesekondi, saka sere cycles inokurumidza.) Class C weld schedule for kusanganiswa kwesimbi kwakafanana ndeye 6,100 amps, 205 lbs.force, uye kusvika ku 42 welding current cycles. Iyi yakawedzerwa nguva yewelding inopfuura hafu yesekondi inogona kupisa ma electrode, kugadzira nzvimbo yakakura kwazvo inopisa-inopisa, uye pakupedzisira kupisa kunze. welding transformer.Simba rekugera reimwe Type C spot weld rinongodzikiswa kubva pa1,820 lbs zvichienzaniswa neType A weld.kusvika 1,600 lbs, asi ine inoyevedza, yakaderera mucherechedzo, Kirasi A weld yakagadzirwa nesaizi yakakodzera welder. inotaridzika zviri nani.Kuwedzera, munzvimbo yekugadzira mutsara, Kirasi A weld nugget ichagara yakasimba uye hupenyu hwe electrode huchave hwakareba.Kuwedzera kune chakavanzika chekudyara mune setup chishandiso ndechekuti mazhinji ekupikisa welding anodzora anoshaya kuverenga kune welding. ikozvino uye simba.Naizvozvo, kunyatsogadzirisa izvi zvakakosha zvakasiyana-siyana, zviri nani kutenga yakatsaurirwa inotakurika resistance welding ammeter uye dynamometer.Weld Control ndiyo Mwoyo weSystem Nguva imwe neimwe nzvimbo weld inogadzirwa, kunaka kwayo uye kusagadzikana kunoenderana nekupikisa. weld control.Matanho ekudzora echikuru anogona kusaburitsa iyo chaiyo nguva uye kupisa kwakakosha kune yega yega weld.Saka, iwe unofanirwa kuita inoenderera inoparadza yekuyedza ye weld simba kuti uve nechokwadi chekuti dhipatimendi rako rekushongedza hariburitse kunze-kwe-spec welds. Kugadziridza zvigadziriso zvako zvewelding ndiyo inonyanya kudhura nzira yekuunza yako resistance welding operations to the consistant quality standard, one after the other.Kuitira maoperation ekupedzisira ekuisa welding, funga kuisa new welding controller ine yakavakirwa-mukati ikozvino uye electrode force kuti tarisa weld imwe neimwe munguva chaiyo.Zvimwe zvezvigadziridzo izvi zvinotokubvumira kuti uise purogiramu yewelding zvakananga muamps, nepo kutonga kwemhepo kunogadziriswa kwemhepo kunogadzirisa simba rinodiwa remagetsi.Kuwedzera, mamwe emitemo yemazuva ano inoshanda nenzira yakavharwa-loop. , kuvimbisa yunifomu welds kunyange nekuchinja kwezvinhu uye shopu voltage.Kukosha kweMvura Inotonhorera Spot welder zvikamu zvinofanira kunge zvakanyoroveswa mvura kuti zvive nechokwadi chehutano hweweld uye hupenyu hurefu hwe electrode panguva yekugadzirwa.Zvimwe zvitoro zvinoshandisa zviduku, zvisina firiji, radiator-style mvura circulators kuti, zvakanakisisa, endesa mvura pedyo nekamuri tembiricha.These recirculators anogona kuva nemigumisiro yakaipa pakugadzirwa, sezvo spot welding matipi anogona kukurumidza kuwedzera nekuda kwekupisa kwakanyanya uye kunoda ma trim akawanda kana kutsiva pashift.Sezvo tembiricha yakakodzera yemvura yeanopikisa welder iri 55 kusvika ku65 madhigirii Fahrenheit (kana pamusoro pedova rekutanga kudzivirira condensation), zviri nani kubatanidza muchina kune imwe yakasiyana inotonhorera yemvura inotonhorera / recirculator.Kana yakanyatsokura, inotonhorera inogona kuchengetedza maelectrodes nezvimwe zvikamu zvewelder, izvo zvichawedzera zvakanyanya. huwandu hwemawelds pakati pemaelectrode trim kana kutsiva.Ongororo dzakaratidza kuti unogona kuwana 8,000 welds pamild steel kana 3,000 welds pagalvanized steel pasina kudimburira kana kutsiva maelectrodes.Unoda rumwe ruzivo here?Inobhadhara kushanda nemutengesi ane hunyanzvi kuti akubatsire kusarudza uye chengetedza kushivirira kwako.Unoda kudzidza zvakawanda?The American Welding Society (AWS) ine zvinyorwa zvakati kuti zve resistance welding zviripo kuti zvitengwe.Uyezve, AWS nemamwe masangano anopa zvidzidzo zvekudzidzisa zvinodzidzisa zvekutanga zve resistance welding process.Uyezve, AWS inopa Certified Resistance Welding Technician certification, iyo inopihwa mushure mekupasa zana-mubvunzo akawanda-sarudzo bvunzo paruzivo rwekuramba welding process.
Machati anoronga Michina yeKirasi A, B, uye C yemakobvu esimbi akasiyana-siyana anosanganisirwa mumabhuku ereferensi, akadai seRWMA's Resistance Welding Handbook, Rev. 4th Edition.
Kunyange zvazvo Class C welds ichiri yakasimba, inowanzoonekwa seisingagamuchirwi nekuda kwenzvimbo yakakura yakakanganiswa nekupisa (HAZ) nekuda kwekugara kwenguva refu.
Semuenzaniso, zvidimbu zviviri zvekuchenesa 18-ga.Simbi yakapfava ine giredhi A spot weld tsanangudzo ye10,300 weld amps, 650 lbs. Welding simba uye 8 welding nguva cycles.
Kirasi C welding purogiramu yemusanganiswa wesimbi yakafanana 6,100 amps, 205 lbs.force, uye kusvika ku42 welding current cycles.Iyi yakawedzerwa nguva yewelding inopfuura hafu yesekondi inogona kupisa ma electrode, inogadzira nzvimbo yakakura kwazvo inopisa-yakakanganiswa, uye pakupedzisira kupisa welding transformer.
Simba rekugera reimwe Type C spot weld rinongodzikiswa kubva pa1,820 lbs zvichienzaniswa neType A weld.kusvika pa1,600 lbs, asi ine mucherechedzo, wakaderera mucherechedzo, Kirasi A weld yakagadzirwa nesaizi yakakodzera welder inotaridzika zvirinani. .Uyezve, munharaunda yekugadzira mutsara, Kirasi A weld nugget ichagara yakasimba uye hupenyu hwe electrode huchava hwakareba.
Kuti uwedzere kune chakavanzika, vazhinji vanopikisa welding control vanoshaya kuverenga kwewelding ikozvino uye simba.Naizvozvo, kuti ugadzirise zvakanaka izvi zvakasiyana-siyana zvakakosha, zviri nani kutenga yakatsaurirwa inotakurika resistance welding ammeter uye dynamometer.
Pese pese panogadzirwa nzvimbo weld, kunaka kwayo uye kuenderana kunoenderana nekupikisa welding control. Maitiro echikuru ekudzora anogona kusaburitsa iyo chaiyo nguva uye kupisa kukosha kune yega weld. Naizvozvo, iwe unofanirwa kuita inoenderera inoparadza kuyedza kwesimba re weld chengetedza kuti dhipatimendi rako rekushongedza hariburitse kunze-kwe-spec welds.
Kugadziridza yako yekudzivirira welding zvinodzora ndiyo nzira inodhura-inoshanda yekuunza yako yekudzivirira welding mashandiro kune inowirirana mhando chiyero, chimwe mushure mechimwe.
Nezvekupedzisira spot welding mashandiro, funga kuisa new welding controller ine yakavakirwa-mukati ikozvino uye electrode simba kuti utarise weld yega yega munguva chaiyo.Zvimwe zvezvinodzora izvi zvinotokubvumidza iwe kuseta welding chirongwa zvakananga mumaamps, nepo control's programmable air function. inoseta simba rinodiwa rewelding. Pamusoro pezvo, mamwe emagetsi emazuva ano aya anoshanda nenzira yakavharwa-loop, achivimbisa mauniform welds kunyangwe nekuchinja kwezvinhu uye magetsi ezvitoro.
Spot welder zvikamu zvinofanirwa kunge zvakanyoroveswa mvura kuti ive nechokwadi chekuti mawelds emhando uye hupenyu hurefu hwemagetsi panguva yekugadzirwa.Zvimwe zvitoro zvinoshandisa zvidiki, zvisina firiji, radiator-maitiro emvura anotenderera ayo, pazvakanakisa, anoendesa mvura pedyo nekamuri tembiricha.Izvi recirculators zvinogona kukanganisa kugadzirwa, sezvo matipi ekuisa welding anogona kukurumidza kuwedzera nekuda kwekupisa kwakanyanya uye zvinoda akawanda ma trim kana kutsiva pashift.
Sezvo tembiricha yemvura yakanakira yeanodziya welder iri 55 kusvika 65 madhigirii Fahrenheit (kana pamusoro pedova rekutanga kudzivirira condensation), zviri nani kubatanidza muchina kune imwe yakasarudzika yemvura inotonhorera inotonhorera / recirculator. ma electrode uye zvimwe zvikamu zve welder zvinotonhorera, izvo zvichawedzera zvakanyanya kuwanda kwewelds pakati pema electrode trims kana kutsiva.
Zvidzidzo zvakaratidza kuti unogona kuwana 8,000 welds pasimbi yakapfava kana 3,000 welds pamarara pasina kudimburira kana kutsiva maelectrodes.
Zvinobhadhara kushanda nemutengesi ane hunyanzvi kuti akubatsire kusarudza uye kuchengetedza yako yekudzivirira welder.
Unoda kudzidza zvakawanda?The American Welding Society (AWS) ine zvinyorwa zvakati kuti zve resistance welding zviripo kuti zvitengwe.Uyezve, AWS nemamwe masangano anopa makosi ekudzidzisa anodzidzisa zvakakosha zve resistance welding process.
Pamusoro pezvo, AWS inopa Certified Resistance Welding Technician certification, iyo inopihwa mushure mekupasa zana-mubvunzo akawanda-sarudzo bvunzo paruzivo rwekuramba welding process.
WELDER, yaichimbova Practical Welding Nhasi, inoratidza vanhu chaivo vanogadzira zvigadzirwa zvatinoshandisa uye kushanda nazvo zuva nezuva. Magazini ino yakashandira nharaunda yewelding muNorth America kwemakore anopfuura 20.
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Nguva yekutumira: Jul-05-2022