Kwimveliso yanamhlanje,Oomatshini bokuwelda bokugcina amandlabaye baba yinxalenye ebalulekileyo yokudibanisa iteknoloji kwiinkalo ezifana nemodyuli yemodyuli yebhetri, ukuchaneka kwe-elektroniki, kunye ne-automotive thin sheet -yesinyithi, ngenxa yeempawu zabo ezizodwa: "amandla aphezulu, ixesha elifutshane, kunye nobushushu obuphantsi." Nangona kunjalo, imigca yemveliso emininzi ihlala idibana "nesiporho" somgangatho we-weld ongahambelaniyo-obonakala njengamandla aguqukayo e-weld, isitshizi esigqithisileyo, okanye iintsimbi ezibandayo. Oku kungazinzi akuphazamisi ukuthembeka kwemveliso kuphela kodwa kwakhona kuthintela ngokuthe ngqo ukusebenza kwemveliso.
Eli nqaku lijolise ekuboneleleni ngesikhokelo esigunyazisiweyo nesisebenzayo kubasebenzisi beefektri kunye neengcali. Ukuqala kwimithetho-siseko engundoqo yokugcina amandla welding, siza kuqhuba{1}}uhlalutyo olunzulu lweengcambu zobuchwephesha bokungangqinelani komgangatho kwaye sicebise amacebo oshishino{2}}okuluphucula ibakala ukuphumeza ulawulo oluchanekileyo kumgangatho weweld.
"Isantya" kunye "nokuchaneka" koGcino lwamandla okuWelding:-Jonga nzulu kuMgaqo wokuSebenza
Undoqo we-welding yokugcina amandla kukuguqulwa kwamandla ombane kumandla ombane, kodwa indlela yokuguqula ihluke kakhulu kwi-AC yendabuko okanye i-inverter welders. Isebenzisa ibhanki ye-capacitors njengendawo yokugcina amandla ukuphumeza ukugcinwa kwamandla, ukuguqulwa, kunye nokukhululwa kwangoko.
UGcino lwamandla kunye nokuKhupha: E=1/2CV²
Ukusebenza kwe-welder yokugcina amandla kunokwahlulwa ibe ngamanyathelo amathathu:
- Ukutshaja (Ugcino): Amandla ombane we-AC alungisiwe ukuze ahlawule ibhanki enomthamo ophezulu-i-capacitors, igcina amandla ombane njengentlawulo engashukumiyo.
- Uguqulo: Nje ukuba umbane wokutshaja osethiweyo (V) ufikile, inkqubo iyayeka ukutshaja. Amandla apheleleyo $ E $ agcinwe kwibhanki ye-capacitor ingabalwa ngokuchanekileyo usebenzisa i-formula $ E=\\ frac{1}{2}CV^2 $ (apho i-C i-capacitance).
- Ukukhutshwa (Ukukhutshwa): Ukuqhutyelwa yi-thyristor okanye i-SCR, ibhanki ye-capacitor ikhupha ngokukhawuleza amandla agciniweyo ngokusebenzisa i-welding transformer. Isiguquli siguqula aphezulu-i-voltage, aphantsi{2}amandla angoku abe yi-low-voltage, ephezulu-yangoku i-pulse, esetyenziswa kwi-workpiece.
Iimpawu kunye nezinto eziluncedo zePulse yangoku
Imveliso yangoku yi-welder yokugcina amandla yimpawu ye-unidirectional current pulse, echazwa ngu:
- Incopho ephezulu: Incopho yangoku inokufikelela kumashumi amawaka e-ampere.
- Ixesha elifutshane: Ixesha lokukhutshwa lifutshane kakhulu, phakathi kwe-1 millisecond (ms) kunye ne-10 millisecond.
Lo "mbane{0}}okhawulezayo" ukukhutshwa kwamandla kugxininisa ubushushu kakhulu kwindawo ye-weld, idala ubushushu obuncinci{1}}iNdawo echaphazelekayo (HAZ). Olu lolona ncedo luphambili lobuchwephesha oluvumela ukuwelda kogcino lwamandla ukuba kungaphumeleli ukuphawulwa ngasemva kuxwebhu olucekethekileyo, ukudityaniswa kwesinyithi esahlukileyo, kunye nokuwelda kobushushu{3}}izinto ezinobuzaza.
Izizathu ezine zeengcambu zobuGcisa zoMgangatho weWeld ongahambelaniyo
Ukuguquguquka komgangatho we-weld kudla ngokuba sisiphumo sokutenxa kwezi ndawo zine zilandelayo zobugcisa.
Ingcambu engunobangela 1: "Engabonakaliyo" Ukuguquguquka kwiMphumo yaMandla
Amandla "ngumgca wokuphila" we-welding. Ukuguquguquka kwayo ikakhulu kubangelwa ukulahleka kwezixhobo zangaphakathi kunye nokuguga.
| Ukuguquguquka kweFactor | Ukubonakaliswa kobugcisa | Impembelelo yoMgangatho |
| Ukuguga kweCapacitor | Ukunyuka kwi-Equivalent Series Resistance (ESR); amandla okwenene (C) ayancipha. | Amandla okukhutshwa okuyinyani (E) ukubola, okukhokelela kubungakanani obuncinci be-weld nugget kunye namandla angonelanga. |
| Ukuchaneka kolawulo lokutshaja | Umbane wokutshaja (V) impazamo ye $\\pm 1%$ okanye ngaphezulu. | Amandla (E) atshintsha kwisikwere sombane (V), okuthetha ukuba ukuguquguquka okungephi kwamandla ombane kubangela ukutsiba okukhulu kwamandla. |
| Ilahleko yeSekethe | Ukunyuka kwe-impedance kwi-welding circuit (iintambo, i-transformer, i-electrodes). | Amandla asetyenziswa ngaphambi kwexesha kwisekethe, ukunciphisa amandla asebenzayo anikezelwe kwindawo ye-weld. |
Ingcambu engunobangela 2: "Random" Ukwahluka kwi-Contact Resistance
I-welding yokugcina amandla inomdla kakhulu kumphezulu womsebenzi. Ukuchasana noqhagamshelwano ngowona mthombo ophambili wokushisa kwe-welding, kwaye ukuzinza kwayo kubeka ngokuthe ngqo ukubunjwa kwe-weld nugget.
- Ukulungiswa koMphezulu we-Workpiece engafanelekanga: I-oyile, i-rust, okanye i-oxide layers kwi-workpiece yenza umqobo ongalinganiyo wokugquma. Xa ikhoyo ngoku igqobhoza ezi maleko, ibangela ukuxinana kobushushu obukhulu kunye nokwanda kwegesi, okukhokelela kwi-spatter kunye ne-porosity.
- I-Electrode Wear kunye noNgcoliseko: Iingcebiso ze-Electrode zinxiba ngokuthe ngcembe, i-oxidize, okanye yosulelwa zizinto zokusebenza phantsi kobushushu obuphezulu kunye noxinzelelo. Oku kuguqula indawo yoqhagamshelwano ye-electrode, ukutshintsha ukuxinana kwangoku kwaye kubangele ukungahambelani kobungakanani bendawo ye-weld.
Ingcambu engunobangela 3: iMechanical System "Lag" (Landela{1}}phezulu)
Inkqubo ye-welding ngumjikelo oguqukayo wokunyibilika kunye nokuqina, ofuna impendulo ekhawulezayo kakhulu kwinkqubo yoxinzelelo lomatshini.
- Ukulandela-okunganelanga: Ngexesha lemillisecond{1}}lokukhupha ixesha elide, intsimbi iyanyibilika ngokukhawuleza, kwaye ubungqingqwa besixhobo sokusebenza buyancipha ngoko nangoko. Ukuba i-electrode pressure mechanism (umzekelo, i-cylinder yomoya okanye inkqubo ye-servo) ayinakulandela le nto iwa ngokukhawuleza ngokwaneleyo, isinyithi esityhidiweyo siya kuba noxinzelelo olwaneleyo, okukhokelela ekunciphiseni i-voids okanye iintanda ngaphakathi kwe-weld nugget, ephazamisa kakhulu amandla e-weld.
- Ukuguquguquka koxinzelelo: Uxinzelelo lomoya olungazinzanga okanye ukutywinwa kwe-cylinder okungalunganga kunokubangela ukuba uxinzelelo lwe-electrode (P) luguquguquke, luchaphazele ngokuthe ngqo ukuchasana nokudibana kunye nokwakheka kwe-nugget.
Unobangela wesi-4: Ukungafani kwePropati yeMpahla kunye neeParamitha
Izixhobo ezahlukeneyo zinovakalelo olwahlukeneyo kwiiparamitha ze-welding, kwaye ipharamitha yendalo yonke imbi kakhulu.
- Okuphezulu{{0}iZixhobo zokuSebenza (umzekelo, iCopper, iAluminiyam): Zifuna iincopho zangoku eziphakamileyo kakhulu kunye namaxesha okukhutshwa amafutshane kakhulu ukunqanda ukutshabalalisa ubushushu. Ukutenxa kancinci kwiparameter kunokubangela udibaniso olunganelanga.
- Izinto eziNyibilikisiweyo (umzekelo, iGalvanized Steel): I-zinc coating inendawo ephantsi yokunyibilika kwaye iyancipha ngokulula. Ukuba iiparamitha azichanekanga, i-zinc engumphunga inokuvaleleka kwi-weld nugget, ibangele i-porosity, okanye ikhutshwe ngobundlobongela kwi-electrode{3}}ujongano lweworkpiece, ibangele isitshizi esinzima.
IziCwangciso zokuPhucula iShishini kunye noLawulo loMgangatho
Ukufezekisa umgangatho we-weld ozinzileyo kwindawo yokugcina amandla i-welding ifuna ukulungiswa okucwangcisiweyo kuwo wonke "Amandla, uQhagamshelwano, kunye nooMechanical" imilinganiselo.
Ulawulo oluchanekileyo: iTekhnoloji yokuTshaja iVoltji eDual-Embini kunye neTekhnoloji yokuTshaja rhoqo
| Itekhnoloji yokuPhucula | Injongo kunye noMgaqo | UkuPhuculwa koMgangatho |
| Dual-Tekhnoloji yePulse | {0}}unyango lwangaphambili: I-pulse yokuqala (yangoku ephantsi) yophula iioksidi zomphezulu kunye nezingcolisi, kuzinzisa ukuxhathisa ukudibana. Welding: I-pulse yesibini (high current) yenza i-weld nugget kwindawo ecocekileyo. | Inciphisa kakhulu i-spatter, i-porosity, kunye ne-welds ebandayo, iphucula ukuguquguquka kwezinto zokusebenza ezinomgangatho ongafezekanga. |
| Inkqubo yokuTshaja iVoltage rhoqo | Isebenzisa-ubonelelo lwamandla oluchanekileyo kunye neelophu zempendulo ukuqinisekisa ukuphinda-phinda kwamandla ombane wokutshaja (V) yi $\\pm 0.1%$ okanye ngcono. | Ngokusisiseko kuphelisa ukuguquguquka kwamandla (E), kuqinisekisa ukuhambelana kwendawo ye-weld. |
| Ukubunjwa kweWaveform yangoku | Ilawula ukukhutshwa kwesekethe ukuphumeza irempu elawulwayo-phezulu, imcaba-phezulu, kunye nethambeka{2}}ezantsi komsindo wangoku, kunencopho elula etsolo. | Ukwandisa inkqubo yokwakheka kwe-nugget, kunciphisa uxinzelelo lwe-thermal, kunye nokunciphisa ukuthambekela kokuqhekeka. |
Ukusebenza okusemgangathweni: Ulawulo lwe-Electrode kunye ne-Workpiece{0}}yonyango lwangaphambili
- Ulawulo lwe-Electrode emgangathweni:
- Ukuhambelana kwezinto: Khetha eyona nto ifanelekileyo ye-electrode (umzekelo, i-CuCrZr, i-Alumina Copper) ngokusekelwe kwizinto zokusebenza.
- Ukunxiba rhoqo: Sebenzisa oomatshini bokunxiba ngokuzenzekelayo ukuqinisekisa ukuba i-electrode tip geometry ihlala ingatshintshi. Ukugqoka kunconywa yonke i-welds ye-500-1000.
- Inkqubo yokupholisa: Kwimveliso{0}}yevolumu ephezulu, amanzi{1}}e-electrode apholileyo anyanzelekile. Hlola rhoqo iziteshi zokupholisa ukukhusela ukuvaleka kunye nokushisa.
- Unyango lwangaphambili{0}}lweworkpiece:
- Ukucoca: Ukuchaneka okanye okuphezulu{0}}izixhobo zokuqhuba, ukucocwa kwe-ultrasonic okanye i-chemical de{1}}i-oxidation iyacetyiswa ukuqinisekisa ukuba indawo ye-weld ayinamaleko e-oyile kunye ne-oxide.
- I-Deburring: Susa ii-burrs ezenziwe ngexesha lokufaka isitampu okanye ukusika ukuthintela ukuba zingabangeli isitshizi esongezelelweyo ngexesha le-welding.
UkuJonga okuBukrelekrele:{0}}Ukufumana iDatha yeXesha lokwenyani kunye neNgxelo
Izixhobo zala maxesha eziphezulu-eziphezulu zokugcina amandla kufuneka zidibanise izinzwa ukwenza ukuba kujongwe umjikelo wobomi ogcweleyo wenkqubo yokuwelda.
- Ukufunyanwa kweDatha: Uqokelelo lwexesha lokwenyani{0}}lokuqokelelwa kwedatha ebalulekileyo, kubandakanywa ukukhupha amaza ngoku, amandla ombane wokutshaja, uxinzelelo lwe-electrode, kunye nokufuduswa.
- Ukumiselwa koMgangatho: Inkqubo igweba ngokuzenzekelayo umgangatho we-weld ngokuhlalutya i-waveform yangoku kunye nedatha yamandla, ibangela i-alamu okanye imise umatshini ngokukhawuleza xa ifumanisa i-anomaly.
- Ukulandeleka: Idatha ye-Welding inxulunyaniswe nebhetshi yemveliso, eyenza ukulandeleka komgangatho kuyo yonke indawo ye-weld enye, ukuhlangabezana neemfuno ezingqongqo kumashishini afana neemoto kunye nezonyango.
Isikhokelo sokuthenga kunye neTshati yokuJonga iingxaki
IiMetrics zokuThenga ezingundoqo: Ukukwazi, ukuchaneka, kunye nokulandelela{0}}
Xa ukhetha umatshini wokuwelda wogcino lwamandla, ungagxili nje kumthamo wegama, kodwa kwezi zalathisi zobugcisa zilandelayo:
| I-Metric engundoqo | Ingcebiso yokuthenga | Isalathiso seGunya |
| Ukuchaneka kwamandla | Ukutshaja kwakhona kwamandla ombane kufuneka kube yi-$\\le\\pm 0.5%$; kufuneka ibonakalise ukutshaja kwamandla ombane rhoqo. | Kubalulekile ukuhambelana kwendawo ye-weld; undoqo wothintelo lobugcisa kwisixhobo esiphezulu{0}}sesiphelo. |
| Ukulandela{0}} koomatshini | Vavanya isantya sempendulo yendlela yoxinzelelo kunye ne-friction coefficient; beka phambili i-servo{0}}iinkqubo zoxinzelelo oluqhutywayo. | Into egqibayo echaphazela iziphene ze-nugget zangaphakathi (i-shrinkage, i-cracks). |
| Ixesha lokukhupha | Ubuncinci bexesha lokukhupha kufuneka libe yi-1ms okanye ngaphantsi, kunye noluhlu olubanzi oluhlengahlengiswayo. | Imisela ubungakanani be-HAZ; Ibalulekile ekudibaniseni{0}}imathiriyeli yokuqhuba kunye namashiti amancinci. |
| Inkqubo yokulawula | Kufuneka ibonise{0}}i-pulse ephindwe kabini, i-waveform shape,{1}}ixesha lokwenyani, kunye nogcino lwedatha. | Ihlangabezana neemfuno zoShishino 4.0 zokulandeleka komgangatho kunye nolawulo lwenkqubo. |
Iziphene zeWelding eqhelekileyo kunye neSikhokelo sokuJonga ingxaki
| I-Defect Phenomenon | Oonobangela abaqhelekileyo | ULungiselelo Countermeasures |
| Ukungonelanga Amandla eWeld | Amandla (E) aphantsi kakhulu; uxinzelelo lwe-electrode (P) luphezulu kakhulu; ukunxiba kakhulu kwe-electrode. | Ukunyusa amandla ombane wokutshaja (V); khangela umthamo we-capacitor; ukunciphisa uxinzelelo (P); nxiba okanye utshintshe i-electrodes. |
| Isitshizi esiMandundu/Ukutshisa{0}} ngapha | Amandla (E) aphezulu kakhulu; umaleko oshinyeneyo weoksidi kumphezulu womsebenzi; uxinzelelo lwe-electrode (P) luphantsi kakhulu. | Ukunciphisa amandla ombane wokutshaja (V); ucoce ngokucokisekileyo umphezulu womsebenzi; sebenzisa-iteknoloji ye-pulse; ukwandisa uxinzelelo (P). |
| Weld Spot Blackening / Oxidation | Ixesha lokuwelda lide kakhulu; ukupholisa okungonelanga kwe-electrode; ukuhamba kwerhasi yokukhusela okungazinzanga (ukuba ikhona). | Ukunciphisa ixesha lokukhupha; khangela inkqubo yokupholisa amanzi; lungisa izinto ze-electrode. |
| I-Porosity ngaphakathi kwe-Weld Nugget | I-oyile/izingcolisi ezingasuswanga kumphezulu womsebenzi; i-vaporization yezinto zokugquma (umzekelo, i-zinc); ukulandelelwa koomatshini{2}}konelanga. | Phucula{0}}unyango lwangaphambili; lungisa ezimbini{1}iparamitha zepulse; jonga isantya sokuphendula isixhobo soxinzelelo. |
Ukuqukumbela
Umgangatho we-weld ongahambelaniyo kumatshini wokuwelda wogcino lwamandla ayisosiphene sendalo yesixhobo kodwa kunokusilela ukufikelela kwi-synergy efanelekileyo phakathi kweeparamitha zenkqubo, imeko yesixhobo, kunye neemeko zomsebenzi. Ngokuqonda imigaqo engundoqo, ukuphumeza ubugcisa bolawulo lwamandla obuchanekileyo (obufana ne-doal-i-pulse), ukuseka ulawulo olusemgangathweni lwe-electrode, kunye nokusebenzisa iinkqubo ezikrelekrele zokujonga inkqubo yokulandeleka, iinkampani zinokuphucula ngokubonakalayo isivuno se-welding kwaye zisebenzise ngokupheleleyo amandla amakhulu{2}}okugcina izibonelelo zogcino lwe-welding.
