Kwimizi-mveliso yanamhlanje, iMedium Frequency Spot Welding machinesisixhobo senkqubo engundoqo kumacandelo afana namacandelo eemoto, iibhetri zamandla amatsha, kunye nezixhobo zehardware. Oku kungenxa yeenzuzo zayo ezibalulekileyo, ukuquka ulawulo oluchanekileyo lwangoku olusuka phezulu{1}}kubuchwepheshe be-inverter yamaxesha amaninzi, ukusebenza kakuhle kwe-thermal, kunye nomgangatho ozinzileyo we-weld.
Nangona kunjalo, iziphene ezinje ngeewelds ezibandayo (iintsimbi zobuxoki), ukugxothwa (i-spatter), imingxuma ecuthekayo, kunye nokuqhekeka kuyenzeka rhoqo ngenxa yolungiselelo olungafanelekanga lweparamitha, imeko ye-electrode engalunganga, okanye umgangatho onganelanga womphezulu womsebenzi. Le miba ayigcini nje ukwandisa amazinga okusebenza kwakhona kwemveliso kodwa inokukhokelela kwiinkxalabo ezinzulu zokhuseleko.
Eli nqaku, elisekelwe kwiinkqubo eziphambili zeshishini kunye nemigangatho yobugcisa, libonelela-uhlalutyo olunzulu lwengcambu yezizathu zeziphene ze-welding kwaye libonelela ngezisombululo ezisebenzayo zokukunceda uphumeze imveliso ye-welding ephezulu{1}}esemgangathweni, engu-zero{2}.
Ulungelelwaniso oluchanekileyo lweeParameters eziPhambili: ISiseko sokuPhelisa iiCold Welds kunye nokugxothwa
Inkqubo yokuwelda ibala kukunyibilika kwentsimbi kunye nokwakheka kwe-weld nugget ngokufudumeza okuxhathisayo. Le nkqubo ilawulwa ngokuyintloko zizinto ezintathu: Okwangoku (I), Ixesha (T), kunye noxinzelelo (P). Nakuphi na ukungalingani kwezi zinto kuya kuchaphazela ngokuthe ngqo umgangatho we-weld.
Iingcambu ezibangela ii-Welds ezibandayo kunye noBuchule bembuyekezo yangoku
I-weld ebandayo (okanye i-weld yobuxoki) yimeko apho indawo ye-weld ibonakala idityaniswe phezulu kodwa ingenayo i-weld nugget efanelekayo ngaphakathi okanye ibonisa amandla aphantsi kakhulu. Oyena nobangela lungenelelo lobushushu. Nangona i-welders ye-MFDC inikezela ngokuzinzile kwangoku, ukuba i-set current iphantsi kakhulu okanye ixesha le-welding lifutshane kakhulu, i-interface yensimbi ayiyi kufikelela kwindawo yokunyibilika.
| Uhlobo lwezinto eziphathekayo |
Uluhlu lwangoku oluCetyisiweyo (A) |
Ixesha lokuwelda (ms) | Iingqwalasela ezingundoqo |
| Intsimbi ephakathi (1.0mm) | 6,000 - 8,000 | 150 - 250 | Qinisekisa uxinzelelo oluzinzileyo lokuthintela ukugxothwa kwangaphambi kwexesha. |
|
Intsimbi engatyiwa (1.0mm) |
4,000 - 6,000 | 100 - 200 | Ukuchasana okuphezulu kufuna "ishedyuli enzima" (ixesha eliphezulu, ixesha elifutshane). |
| Ingxubevange yeAluminiyam (1.0mm) | 18,000 - 25,000 | 40 - 80 | I-conductivity ephezulu ifuna phezulu kakhulu, yangoku ngokukhawuleza. |
Ngokwesiqhelo, ukuba amandla okuqina angonelanga afunyaniswe, beka phambili ukunyusa i-welding yangoku kwi-5% ngokunyuka kunokwandisa ixesha le-welding, nto leyo enokukhokelela kwi-oxidation egqithisileyo yendawo ye-weld.
Ulawulo lokugxothwa: Ukusetyenziswa kweNzululwazi kweZithathu -Iprofayile yoxinzelelo lwenqanaba
Ukukhutshwa (i-spatter) akugcini nje ukumosha izinto kunye nokonakalisa i-electrodes kodwa kunokubangela i-shrinkage cavities ngaphakathi kwe-weld nugget. Uphononongo lubonisa ukuba ukulungiswa kweprofayili yoxinzelelo kunokunciphisa izinga lokugxothwa kwi-5% yendabuko - 8% ukuya ngaphantsi kwe-1%. Iiwelder zeMFDC zixhasa ulawulo loxinzelelo lwamanqanaba ngamanqanaba amaninzi; Esi sicwangciso silandelayo "inqanaba lesithathu" siyacetyiswa:
- Phambi{0}Cofa inqanaba:Emva kokuba i-electrode inxibelelana nomsebenzi, vumela ixesha elaneleyo -lokucinezela (ngokuqhelekileyo 150{3}}}300ms) ukuqinisekisa ukuba umsantsa phakathi kwezinto zokusebenza uvalwe ngokupheleleyo. Ukungonelanga kwexesha lokucinezela kwangaphambili kunokukhokelela ekugxothweni kokuqhuma xa i-current isetyenziswa ngenxa yokuchasana ngokugqithisileyo.
- Inqanaba leWelding:Gcina uxinzelelo oluqhubekayo ukuvumela i-weld nugget ukuba ikhule phantsi koxinzelelo. Uxinzelelo olunganeleyo ngeli nqanaba yimbangela ephambili yokugxothwa kwangaphakathi (i-splashing).
- Bamba inqanaba:Emva kokuba i-current inqunyulwa, ii-electrode kufuneka zigcine uxinzelelo lwe-50{2}}150ms eyongezelelweyo. Eli nyathelo libalulekile njengoko linyanzela i-weld nugget ukuba yomelele phantsi koxinzelelo, ithintele ngokufanelekileyo i-micro-cracks kunye ne-shrinkage cavities ebangelwa ukupholisa kwesinyithi kunye nokucutheka.
Ulawulo lwe-Electrode kunye neNkqubo yokuPholisa: Ukuqinisekisa ukuhambelana kwe-Weld
I-electrode yi-terminal ye-welding circuit, ichaza ngokuthe ngqo ubuninzi bangoku kunye nokusabalalisa ukushisa.
Iinkqubo ezisemgangathweni zoKunxitywa kwe-Electrode kunye noTshintsho
Ukuwelda ixesha elide kubangela ukuba incam ye-electrode ithambe, i-oxidize, kunye ne "mushroom." Njengoko indawo yoqhagamshelwano ye-electrode ikhula, ubuninzi bangoku buhla ngokukhawuleza phantsi komgangatho ofanayo wangoku, okukhokelela kubukhulu obuncinci be-weld nugget.
- UmGangatho weSilumkiso soShishino: Xa i-electrode incam yediameter inyuka ngaphezulu kwe-20% xa kuthelekiswa noyilo lokuqala, kufuneka inxibe okanye itshintshwe. Idatha yeenkcukacha-manani ibonisa ukuba ukuseka irejimeni yokugcinwa kwe-electrode esemgangathweni kunokuphucula izinga lokwamkelwa kwe-welding malunga ne-15%.
Ukukhetha izinto ze-Electrode kubalulekile kwizinto ezahlukeneyo. Umzekelo, ii-electrode zeChromium Zirconium Copper (CuCrZr) ziyacetyiswa ukuwelda iialloyi ze-aluminium ngenxa yobushushu bazo obuphezulu bokuthambisa kunye nokuhanjiswa, okunciphisa ngokusebenzayo ukuncamathela.
Ukujongwa kobungakanani beNkqubo yokuPholisa: Ukuthintela ukutshiswa kwe-Electrode{0}}
Iiwelder ze-MFDC zivelisa ubushushu obubonakalayo ngexesha -lokusebenza ngokuphindaphindiweyo. Ukuba ukupholisa akwanelanga, ubomi be-electrode bunokufinyezwa ngaphezu kwe-60%. Iiparamitha ezifanelekileyo zokupholisa kufuneka zilawulwe ngokungqongqo:
- Ubushushu baManzi ekungeneni: 5℃- 30 degree.
- Ubushushu baManzi okuPhumayo: Makungadluli kuma-40 degrees .
- Ixabiso lokuhamba kwamanzi: Kucetyiswa ukuba kufakwe imitha yokuhamba ukuze uqinisekise ubuncinci bezinga lokuhamba kwe-4-6 ilitha ngomzuzu.
Ukulungiswa komphezulu kunye nokuhambelana kwezinto eziphathekayo: Ukuphelisa iingozi ezingabonakaliyo zoMgangatho
Ukucoceka komphezulu wesixhobo sokusebenza kuhlala kungahoywa ngabaqhubi, kodwa ngowona tshintsho lukhulu oluchaphazela ukuguquguquka kokumelana noqhagamshelwano (R).
Ubungakanani beMpembelelo yeziNgcolisi zoMphezulu kuNxibelelwano loQhagamshelwano
Ubukho beoyile, umhlwa, okanye isikali seoksidi kunokonyusa ngoko nangoko ukuchasana noqhagamshelwano nge-50% - 200%. Oku kuxhathisa okungazinzanga kukhokelela kubushushu obungalawulekiyo bewelding, kubangela ukutsha okunzulu kwendawo{3}}ngokusebenzisa intsimbi okanye iingqele. Kwiindawo ezichanekileyo ezifana ne-welding entsha yebhetri yamandla, umphezulu kufuneka ucinywe ngotywala okanye ucocwe nge-ultrasonically ngaphambi kwe-welding ukuqinisekisa ukuhambelana kwe-electrochemical of the surface contact.
Ubuchule bokuWelding obuKhethekileyo beAluminiyam iAluminiyam kunye neNtsimbi{0}}Amandla aphezulu
- Iingxube zeAluminiyam:Umphezulu wenza lula ifilimu exineneyo ye-aluminium oxide (indawo yokunyibilika ngaphezu kwe-2000 degree). Ukusila ngoomatshini okanye ukucocwa kweekhemikhali kuyafuneka phambi kokuba kutshiswe, kudityaniswe nemowudi yokunyuka kwe-MFDC engumnqantsa ukugqobhoza umaleko weoxide.
- Phezulu-Intsimbi yamandla (HSS):Iqulethe izinto ezininzi zokuhlanganisa kwaye ithanda ukwenza i-brittle microstructures xa ipholisa. Kuyacetyiswa ukuba usebenzise inkqubo ye-welding ye-pulse ezimbini, ukongeza encinci "i-tempering pulse" emva kwe-main welding pulse. Oku kusebenzisa ubushushu obushiyekileyo kwi-situ annealing of the weld spot, ukuphucula ngokubonakalayo ukuqina kwamalungu.
ULondolozo loThintelo kunye nokuJonga iNgxaki: Ukutshintsha ukusuka "kwi-Firefighting" ukuya "kuThintelo loMlilo"
Uzinzo lwezixhobo yimfuneko yokuwelda umgangatho ophezulu{0}. Ukuhlolwa okuncinci okuqhelekileyo kunokuthintela ngaphezulu kwe-80% yexesha lokuphumla elingalindelekanga.
Uluhlu loHlolo lwamaxesha ngamaxesha aMalunga aBalulekileyo
| Into yoHlolo | Ukuphindaphinda okucetyisiweyo | Imfuneko esemgangathweni |
| I-Insulation Resistance | Ngenyanga | Uvavanyo lokuvavanya phakathi komnini we-electrode kunye nomzimba womatshini one-megohmmeter; kufuneka ibe> 2MΩ. |
| I-Pneumatic Stability | Rhoqo ngeveki | Jonga ukuguquguquka koxinzelelo lweyunithi yeFRL; qinisekisa ukuguquguquka < ± 0.02MPa. |
| UQhagamshelwano lweSekethe yeSekondari | Yonke imihla | Jonga i-shunts yobhedu eguquguqukayo yokutshisa kakhulu kunye neebholithi zokukhululeka. |
| Ulungelelwaniso loVavanyo | Ngesiqingatha-ngonyaka | Ukulinganisa ubuchwephesha beenzwa zoxinzelelo kunye neemodyuli zangoku zokubeka iliso. |
Uxilongo oluKhawulezayo lweeFayili zesiXhobo esiQhelekileyo
Ukuba umatshini awusebenzi emva kokucofa ukutshintshwa kweenyawo, khangela igalelo lomqondiso wokuqala kumlawuli kunye nokuba i-coil ye-solenoid valve itshisiwe. Ukuba i-LCD ibonisa "i-Overlimit yangoku," idla ngokuba yi-short circuit kwi-loop yesibini okanye ukunamathela kakhulu kwe-electrode kumsebenzi wokusebenza.
Ingcebiso yeNgcali: UngaKhetha njani kwaye uThenge iSixhobo sokuWelding esiPhakamileyo{0}}
Xa ukhetha i-welder yendawo, umntu akufuneki agxile kwixabiso kuphela kodwa athathele ingqalelo iimpawu zayo zeEEAT:
- Indlela Yokulawula:Ukubeka phambili iinkqubo ze-PLC ezinesakhono sangoku/ sokuJonga amandla rhoqo. Ezi nkqubo zinokubuyekeza igrid eguquguqukayo kunye nokunxiba kwe-electrode ngexesha lokwenyani.
- I-Inverter Frequency:I-1000Hz ngumgangatho we-MFDC welders; i-frequency ephezulu ithetha impendulo ephuculweyo yolawulo lwangoku.
- Inkxaso yophawu:Khetha abavelisi abanenkqubo{0}}eneelabhoratri ezixhotyiswe kakuhle (umzekelo, iSuzhou Agera, njl.). Banokubonelela ngovavanyo lwesampulu yasimahla kunye nesikhokelo sepharamitha yenkqubo yezinto ezithile, ebaluleke kakhulu kubasebenzisi abatsha kunye nerempu yemveliso ekhawulezayo{5}}phezulu.
Ukuqukumbela
Ukusombulula iziphene ze-welding yinzame yobunjineli ecwangcisiweyo efuna ukuba abaqhubi bangaqondi kuphela "ukulungiswa kweparamitha" kodwa "nokugcinwa kwezixhobo" kunye "neempawu zezinto eziphathekayo." Ngokuphumeza useto oluchanekileyo lweparameter, ukugcinwa okusemgangathweni kwe-electrode, ukucocwa komphezulu okungqongqo, kunye nokuhlolwa kwezixhobo ngamaxesha athile, iinkampani zinokulinciphisa kakhulu izinga lokulahlwa, ukwandisa ubomi bezixhobo, kwaye ziseke umgangatho woncedo kwimarike ekhuphisanayo. Siyathemba ukuba esi sikhokelo sibonelela ngereferensi ebalulekileyo kwiindlela zakho zokuvelisa, ukunceda inkqubo yakho ye-welding ifikelele kubude obutsha.
