Intshayelelo
Kwiindawo zoshishino ezifana nokuveliswa kweemoto kunye nokuveliswa kwezixhobo zekhaya, umgangatho we-welded joints umisela ngokuthe ngqo amandla okwakhiwa kunye nobomi benkonzo yeemveliso. IMedium Frequency Spot Welder, njengesixhobo esingundoqo kwi-welding yangoku yokuxhathisa, kufuneka ihlangabezane neemfuno ezingqongqo kuwo wonke amanqanaba amaninzi kubandakanya isayensi yemathiriyeli, iipropathi zoomatshini, kunye nozinzo lwenkqubo. Eli nqaku lihlalutya ngokucwangcisiweyo inkqubo yesalathisi somgangatho wamalungu aveliswe ngabashicileli bamabala aphakathi ukusuka kwiimbono ezintathu: imigangatho yamazwe ngamazwe, iiparamitha zenkqubo, kunye neendlela zokuvavanya, ukubonelela ngeembekiselo zolawulo lobugcisa kumashishini okuvelisa.
I. Isakhelo soMgangatho esiSisiseko seMedium Frequency Spot Welder Joints
Ngokwe-ISO 14373 kunye ne-GB/T 10433 imigangatho, amalungu afanelekileyo aqulunqwe yi-Medium Frequency Spot Welderkufuneka ihlangabezane neemfuno ezine eziphambili:
- Nugget Ubungakanani Control
Imfuneko yoDayamitha: Idayamitha ye-nugget kufuneka ifikelele (√t) × (4~5) mm (apho u-t bubungqingqwa beshiti elicekethekileyo). Ngokomzekelo, xa i-welding 1.2mm ishidi lensimbi, ububanzi be-nugget kufuneka ilawulwe phakathi kwe-4.8 ~ 6.0mm.
Umgangatho wokungena kweNqanaba lokuNgena: Ubunzulu bokungena kwe-Nugget kwizinto ezisisiseko kufuneka zibe Mkhulu okanye zilingane ne-20% yobukhulu beshiti, kwaye umehluko wezinga lokungena phakathi kwamaphepha amabini akufanele udlule i-15%.
- Izalathisi zokuSebenza koomatshini
Amandla e-Shear: Kufuneka abe Makhulu okanye alingane ne-350MPa kumalungu entsimbi ethambileyo kwaye Mkhulu kuno okanye alingane ne-220MPa ye-aluminium alloy joints. Uvavanyo kwiibhokisi zebhetri yemoto yamandla amatsha adityanisiweyo lubonisa ukuba uluhlu lokuguquguquka kwamandla okucheba lwamalungu enziwe ngokuwelda amabala aphakathi alawulwa ngaphakathi kwe ±5%.
Ubomi bokudinwa: DP780 ephezulu -amandla entsimbi adityanisiweyo adityaniswe ngamaza aphakathi kufuneka abe namandla okudinwa Mkhulu okanye alingane ne-180MPa phantsi kwe-10^6 imithwalo yomjikelo.
- IiNgcaciso zoMgangatho womphezulu
Ubunzulu be-Indent: Makungadluli kwi-15% yobukhulu beshiti. Kwi 0.8mm ebandayo-ishiti eliqengqelekayo lentsimbi, oku kuthetha Ngaphantsi okanye ilingana no 0.12mm.
Spatter Control: No more than 3 spatter particles with diameter >0.5mm kwindawo ye weld. Iiwelder zendawo ezisebenza ngamaza aphakathi zinokunciphisa ukwenzeka kwesitshizi zibe ngaphantsi kwe-2% ngobuchwepheshe be-DC inverter.
- IiMfuno zeMicrostructural
Ubushushu-ububanzi bommandla obuchaphazelekayo Ngaphantsi okanye bulingana no-0.4mm, umxholo we-martensite<8% (for dual-phase steel), and grain size controlled at ASTM grade 10 or higher. Data from a home appliance company shows that 304 stainless steel joints welded with medium frequency achieved a grain size of grade 12, significantly better than those from traditional AC welders.
II. I-Influence Mechanism ye-Medium Frequency Spot Welder Process Parameters kuMgangatho
IMedium Frequency Spot Welderiqinisekisa umgangatho odibeneyo uhlangabezana nemigangatho ngokulawula ngokuchanekileyo iiparamitha ezingundoqo ezintathu:
- Ukuchaneka kweWelding yaNgoku (±1.5%)
Uxinaniso lwangoku lufuna ukufikelela kwi-80~120A/mm². Ukuziqhelanisa nomzi-mveliso weemoto kubonise ukuba ukonyuka kwangoku ukusuka kwi-8kA ukuya kwi-9kA kunyuse i-nugget yedayamitha ukusuka kwi-5.1mm ukuya kwi-6.3mm kunye namandla okucheba nge-18%.
Imowudi yolawulo lwangoku yolawulo oluqhelekileyo lwetekhnoloji ye-medium frequency inverter isusa iziphumo zokuguquguquka kwegridi, iqinisekisa ukuba uzinzo lwangoku lufikelela kuma-99.5%.
- Ulawulo lweXesha lokuWelding (1~500ms)
Impazamo yexesha kufuneka ibe ngaphantsi okanye ilingane no-±0.5ms. Xa welding 0.6mm +1.0 mm amashiti ukutyeba angafaniyo, usebenzisa izigaba ezintathu -ulawulo lwexesha (pre{5}}uxinzelelo 50ms, welding 200ms, bamba 100ms) ngemedium frequency spot welderkuphuculwe ukufana kwe-nugget ngama-40%.
- Ukuzinza koxinzelelo lwe-Electrode (±2%)
Amaxabiso oxinzelelo aqhelekile yi-2~6kN. Ukuguquguquka koxinzelelo kunokubangela ukutenxa kwidayamitha ye-nugget ukuya kuthi ga kwi-±0.3mm. Umenzi weempahla ezimhlophe usebenzise inkqubo yoxinzelelo lwe-servo ye-medium frequency spot welder ukulawula ukuguquguquka koxinzelelo ngaphakathi kwe-±0.05kN.
III. Iindlela zoVavanyo loMgangatho kunye neeNkqubo zoLawulo lweNkqubo
- Uvavanyo olutshabalalisayo
Uvavanyo lweChisel: Isebenzisa isixhobo se-wedge ye-45℃ukwahlula indawo ye-weld. I-nugget efanelekileyo kufuneka ihlale kulo naliphi na iphepha. Iimvavanyo zokuqinisekisa kwimodyuli yebhetri entsha yamandla ibonise ireyithi yokupasa ye-99.7%.medium frequency spot welderamalungu.
Uvavanyo lweMetallographic: Isebenzisa i500x electron microscopy ukujonga i nugget cross-icandelo. I-Porosity kufuneka ibe<5% and crack length <0.1mm.
- Alulo-uVavanyo oluLonakalisayo (NDT) Techniques
Uvavanyo lwe-Ultrasonic: Ukusebenzisa i-10MHz probe inokubona iziphene ezingaphezulu kwe-Φ0.3mm. Isityalo se-automotive sidityaniswe neeparamitha ze-welding eziphakathi kunye ne-ultrasonic C-ukuskena, ukuzuza izinga lokufumanisa isiphene kwi-intanethi ye-98.5%.
X-Uvavanyo lwereyi: Isisombululo ukuya kuthi ga kwi-5μm singachonga i-microscopic shrinkage voids ngaphakathi kwe-nugget, ilungele ngakumbi i-aerospace{2}}yebakala le-aluminium alloy welding.
- Ukujongwa kweNkqubo yeDijithali
Izixhobo zokuwelda kwindawo ephakathihlanganisa iimodyuli zokujonga ukuxhathisa. Ngokuqokelela ijiko loxhathiso ngexesha lokwenyani-ngexesha le-welding (jonga umzobo), i-anomalies esemgangathweni inokuqikelelwa nge-10ms kwangaphambili. Emva kokuphumeza le teknoloji, inkampani enye yanciphisa izinga lenkqubo yesiphene ukusuka kwi-0.8% ukuya kwi-0.12%.
I-multi-iparameter协同 yokuhlalutya inkqubo (yangoku-uxinzelelo{2}}ukufuduswa) isebenzisa umatshini wokufunda ukwakha idatabase yeeseti zenkqubo ye-2000, ukufezekisa ukuchaneka komgangatho we-92%.
IV. IiNdlela zeTekhnoloji eziPhambili zoPhuculo loMgangatho
- ULungiselelo lokuDityaniswa kwezinto
Phuhlisa iinkqubo ezizinikeleyo zokuwelda kwizinto ezigqunyiweyo, ezifana nemowudi "ecothayo{0}}yokunyuka kwangoku" yamaphepha entsimbi, uphucula ukusebenza kakuhle kokuphuma komphunga we-zinc ngama-60% kunye nokunciphisa ukutshiza.
- Ubuchwephesha beMbuyekezo obukrelekrele
Inkqubo yembuyekezo ye-electrode ezenzekelayo ilinganisa utshintsho lwedamitha ye-electrode (ukuchaneka okuyi-0.01mm) kwaye ihlengahlengisa ngamandla umsinga wokuwelda (±3%), yandisa ubomi benkonzo ye-electrode ngama-2.5.
- Ivaliwe-Ulawulo lweNkqubo yeLuphu yeParamitha
Iqonga ledijithali-elisekwe kwiparameter yokusebenzela ibala eyona festile yewelding ngokulinganisa okubonakalayo. Ukusetyenziswa kumgca wokuvelisa icompressor ye-air conditioner kuncitshiswe ixesha lokulungisa inkqubo nge-70%.
Ukuqukumbela
Ngaphantsi kwemvelaphi yoshishino lwemveliso ehlakaniphile kunye nokuphuculwa komgangatho, ulawulo lomgangatho weMedium Frequency Spot Welderamajoyinti avele kwisalathiso samandla esinye ukuya kwiprojekthi yobunjineli ecwangcisiweyo equka i-microstructure, ukusebenza okuguquguqukayo, kunye nozinzo lwenkqubo. Ngokudityaniswa kobuchwephesha bolawulo lwedijithali kunye neendlela zovavanyo olukrelekrele, abashishi bamabalana banamhlanje banokuzinzisa amanqanaba emfundo edibeneyo ngaphezulu kwe-99.9% kwaye banciphise iindleko zelahleko elahlekileyo ngama-60%. Ngokuphunyezwa kwemigangatho emitsha efana ne-IEC 62108 kunye nokusetyenziswa okunzulu kombono womatshini kunye nobuchwepheshe bedatha yedatha enkulu, ukulawulwa komgangatho weenkqubo ze-medium frequency spot welding ngokuqinisekileyo kuya kuhamba ukuya kwinqanaba eliphezulu{5}}lobukrelekrele obuchanekileyo, ukubonelela ngeziqinisekiso zoqhagamshelo oluthembeke ngakumbi kwimveliso{6}}ephezulu.
