Isingeniso
Njengemishini yobuchwepheshe ewumgogodla emkhakheni wesimanje wokushisela, umgomo wokusebenza wemedium frequency spot welding umshiniihlanganisa ubuchwepheshe bamandla kagesi kanye nethiyori yokulawula ukunemba. Uma kuqhathaniswa nemishini yokushisela imvamisa yamandla endabuko,medium frequency spot weldersfinyelela ukuthuthukiswa okuyimpumelelo kwikhwalithi yokushisela nokusebenza kahle ngobuchwepheshe be-inverter. Lesi sihloko sichaza ngokuhlelekile isimiso sokusebenza kanye nezinzuzo zobuchwepheshe zemishini yokushisela i-medium frequency spot ngemibono yokuguqulwa kwamandla, ukulawulwa kwenqubo yokushisela, kanye nemiphumela ye-thermodynamic.
1. Ukugeleza komsebenzi okubalulekile
Ukusebenza komshini wokushisela indawo yefrikhwensi emaphakathi kusekelwe ochungechungeni lokuguqulwa kwamandla "AC → DC → Medium Frequency AC → Welding," okufaka izinyathelo ezibalulekile ezilandelayo:
- Okokufaka Amandla Nokulungisa
Idivayisi ixhunywe-esigabeni sesithathu samandla angu-380V wefrikhwensi ye-AC. Amandla e-AC aguqulelwa amandla e-DC adonsayo ngemojuli{3}}egcwele yokulungisa ibhuloho. Lesi sigaba sisebenzisa ubuchwepheshe bokulungisa i-thyristor, obuvumela ukulungisa i-engeli yesigaba yokokufaka kwamanje ukuze kufinyelelwe u-0-100% wokulawula ngaphambili kwamandla, ukunciphisa umthelela wegridi.
- Ukuguqulwa kanye Nokwenyusa Imvamisa
Amandla e-DC alungisiwe acutshungulwa yimojuli yokuguqula ye-IGBT (Insulated Gate Bipolar Transistor), eyenza-ukushintsha kwesivinini esikhulu kokuthi 1-4 kHz ukukhiqiza amandla amaphakathi{6}}esikwele sesikwele amandla e-AC. Isibonelo, imodeli engu-200kVA yomkhiqizo othile ifinyelela ukusebenza kahle kokuguquguquka okungu-98%, ngokulahleka kwamandla okuyingxenye eyodwa kwezintathu kuphela yaleyo yama-transformer avamile wamandla.
- Isinyathelo Esiphezulu-I-Frequency Transformer-Yehla
Amandla amaphakathi-emvamisa ye-AC adlula-ku-frequency transformer ephezulu ene-nanocrystalline alloy core, ehlisa i-voltage isuka ku-600V iye kububanzi obuphephile obungu-5-20V kuyilapho inyusa amanje kuya ku-welding{9}}ukuqina kwezinga lika-5,000-A30,0. Le nqubo isebenzisa izici ze-high-frequency ukunciphisa umthamo we-transformer ngo-60% kanye nesisindo ngo-50%.
- I-DC Welding Output
Isekethe yesibili ibhekana nokulungiswa kwesibili ngeqembu-lama-diode okubuyisela asheshayo, akhipha amandla e-DC nge-ripple coefficient engaphansi kuka-5%. I-DC welding current igwema ukuphazamiseka kukazibuthe okuvamile emishinini yokushisela ye-AC futhi iqinisekisa ukwakheka okuzinzile kwe-nugget lapho izinto zokushisela ezifana ne-aluminium alloy namashidi akhandisiwe.
2. Ukulawulwa kwe-Thermodynamic yenqubo yokushisela
Imishini yokushisela indawo yefrikhwensi emaphakathizuza{0}}ikhwalithi ephezulu ngokuphatha ukushisa okunembayo:
- Xhumana ne-Resistance Regulation
Ama-Electrode asebenzisa u-200-600kgf wengcindezi ukuze asuse izendlalelo ze-oxide yangaphezulu ezintweni zokusebenza, ehlisa ukumelana nokuxhumana kube ngu-50-200μΩ. Izinzwa zomfutho we-Dynamic emishinini yokushisela imvamisa emaphakathi ziqapha ngesikhathi sangempela, ziqinisekisa ukuthi ukuguquguquka kokumelana kulawulwa ngaphakathi kuka-±3%.
- Ukuthuthukiswa Kwe-Waveform Yamanje
Ubuchwepheshe bokuguqula{0}}imvamisa emaphakathi bungakhipha ama-waveform ahlukahlukene, afana namagagasi e-trapezoidal nama-pulsed wave. Uma ushisela insimbi engagqwali engu-0.5mm,-imodi ye-pulse eningi (isb, 10kA preheating engu-2ms elandelwa u-15kA main welding ka-5ms) ivimbela ngempumelelo i-spatter futhi ithuthukise ukuminyana kwe-nugget.
- I-Thermal Balance Mechanism
Isistimu yokupholisa eyakhelwe-ngaphakathi (izinga lokushisa lamanzi elingu-25℃±2℃) lithwala u-70% wokushisa kwe-electrode. I-algorithm ye-PID ilungisa isivinini sokugeleza kwamanzi ukuze kuqinisekiswe ukukhuphuka kwezinga lokushisa kwe-electrode akudluli ku-150 degree. Idatha yokuhlola evela kulayini wokukhiqiza izimoto ibonise ukuthi ngemva kokushisela okungu-500 okulandelanayo, izinga lokushisa le-electrode lenyuke ngama-degree angu-82 kuphela.
3. Umehluko Wezobuchwepheshe Uma Kuqhathaniswa Nemishini Yokushisela Amandla Endabuko
| Ubukhulu bokuqhathanisa | Medium Frequency Spot Welder | I-Power Frequency Welder |
|---|---|---|
| Imvamisa Yokusebenza | 1-4kHz | 50/60Hz |
| Isivinini Samanje Sokuphendula | 0.5ms{1}}ukulungiswa kwezinga | 20ms{1}}ukulungiswa kwezinga |
| Isici samandla | Kukhulu noma kulingana no-0.95 | 0.6-0.7 |
| Aluminium Welding Amandla | 0.3-4 mm ubukhulu | Ubukhulu 1.5mm (ukwelashwa okukhethekile kuyadingeka) |
| I-Electrode Life | 80,000-120,000 imijikelezo (ama-electrode afakwe nge-chrome) |
30,000-50,000 umjikelezo |
4. Izimo Zokusebenza Ezijwayelekile
- Amamojula Ebhethri Yemoto Yamandla Amasha: Kusetshenziswa izici ze-DC ze-medium frequency welding, i-aluminium foil engu-0.3mm ishiselwe ngokunemba kokulawula ububanzi be-nugget obungu-±0.1mm, ihlangabezana nezindinganiso ze-ISO 18278-2.
- I-Multi-I-Layer Plate Welding: Ku-lap welding yamapuleti ensimbi angu-3mm{1}}mm, ubuchwepheshe bamanje besinxephezelo obuguquguqukayo buqinisekisa ukushisisa okulinganayo kwamapuleti aphezulu naphansi, okwandisa amandla okugunda ngo-25%.
- I-Precision Electronic Components: Kusetshenziswa i-0.1ms-ileveli encane ye-micro-i-pulse welding, isetshenziswa ngempumelelo ekushiseleni ikesi lehawu lefoni, ngendawo{3}}ethintekile yokushisa Engaphansi noma elingana no-0.05mm.
Isiphetho
Imishini yokushisela indawo yefrikhwensi emaphakathifinyelela ukunemba okuphezulu nokusebenza kahle kwamandla enqubweni yokushisela ngokusebenzisa i-synergy yobuchwepheshe bokuguqula, ukuphuma kwe-DC, nokulawula okuhlakaniphile. Umnyombo ulele ekuguquleni ugesi wemvamisa yamandla endabuko ube amandla amaphakathi-emvamisa kanye nokuthola ukulethwa kokushisa okunembile ngokuvala{2}}iluphu yokulawula ngokushesha. Ngokusetshenziswa{4}}kwesizukulwane sesithathu sezinto zokwakha ze-semiconductor (isb, i-SiC), imvamisa yokusebenza yemishini yokushisela indawo ephakathi nendawo kulindeleke ukuthi idlule u-10kHz ngokuzayo, iqhubeke nokunqamula imigoqo yobuchwepheshe ekushiseleni izinto ezisetshenziswayo ezinkulu kakhulu-ezincane nezinsimbi ezingafani. Emabhizinisini akhiqizayo aphishekela ikhwalithi yokushisela nokusebenza kahle kokukhiqiza, ukuqonda okujulile kwesimiso sokusebenza semishini yokushisela imvamisa emaphakathi kuyisihluthulelo sokuthuthukisa imingcele yenqubo kanye nokuthuthukisa ukuncintisana komkhiqizo.
