Selelekela
E le thepa ea mantlha ea tekheniki tšimong ea sejoale-joale ea tjheseletsa, molao-motheo oa ho sebetsa oamochini o tjheseletsang letheba la maqhubu a maharenge kopanya theknoloji ea elektronike ea matla le khopolo ea ho laola ka nepo. Ha ho bapisoa le mechini ea welding ea motlakase ea setso,li-welders tse mahareng tsa maqhubufihlela ntlafatso ea katleho ea boleng le ts'ebetso ea welding ka theknoloji ea inverter. Sengoliloeng sena se hlalosa ka mokhoa o hlophisehileng molao-motheo oa ts'ebetso le melemo ea tekheniki ea mochini oa welding oa maqhubu a mahareng ho latela pono ea phetoho ea matla, taolo ea ts'ebetso ea welding, le litlamorao tsa thermodynamic.
1. Mosebetsi oa mantlha
Ts'ebetso ea mochini oa tjheseletsa oa sebaka se mahareng o ipapisitse le ketane ea ho fetolela matla ea "AC → DC → Medium Frequency AC → Welding," e kenyelletsang mehato e latelang ea bohlokoa:
- Kenyeletso ea Matla le Tokiso
Sesebelisoa se hoketsoe ho motlakase oa AC-mohato oa boraro oa 380V. Motlakase oa AC o fetoloa motlakase oa DC ka -mojule o felletseng oa ho lokisa borokho. Mokhahlelo ona o sebelisa tekhenoloji ea ho lokisa thyristor, e lumellang ho fetola sekhahla sa nako ea ho kenya letsoho ho fihlela 0-100% taolo ea pele ea matla, ho fokotsa matla a marang-rang.
- Phetoho le Maqhubu a Matlafatsang
Motlakase o lokisitsoeng oa DC o sebetsoa ke mojule oa inversion oa IGBT (Insulated Gate Bipolar Transistor), o sebetsang{0}}ka lebelo le phahameng ka 1-4 kHz ho hlahisa matla a mahareng a-frequency square wave AC. Ka mohlala, mohlala oa 200kVA oa mofuta o itseng o finyella katleho ea phetoho ea 98%, ka tahlehelo ea matla feela karolo ea boraro ea li-transformer tsa motlakase tse tloaelehileng.
- Phahameng-Frequency Transformer Mohato-Ho Tlase
Motlakase oa mahareng oa AC-o feta ka har'a-frequency transformer e nang le nanocrystalline alloy core, o fokotsa motlakase ho tloha 600V ho isa sebakeng se sireletsehileng sa 5-20V ha o ntse o eketsa matla a hona joale ho isa ho welding{9}}level intensity of 5,000-30,0, Ts'ebetso ena e phahamisa litšoaneleho tsa maqhubu a holimo ho fokotsa molumo oa transformer ka 60% le boima ba 50%.
- DC Welding Output
Potoloho ea bobeli e na le tokiso ea bobeli ka sehlopha sa -lisebelisoa tsa ho hlasimolla ka potlako, tse ntšang matla a DC a nang le ripple coefficient e ka tlase ho 5%. DC welding current e qoba tšitiso ea motlakase e atileng mecheng ea khale ea ho tjheseletsa ea AC mme e netefatsa sebopeho se tsitsitseng sa nugget ha lisebelisoa tsa welding tse joalo ka alloy alloy le lishiti tse nang le masenke.
2. Taolo ea Thermodynamic ea Ts'ebetso ea Welding
Mechini ea ho tjheseletsa sebaka se maharengfumana{0}welding ea boleng bo holimo ka taolo e nepahetseng ea mocheso:
- Ikopanye le Resistance Regulation
Li-electrode li sebelisa 200-600kgf tsa khatello ho tlosa likarolo tsa oxide ea holim'a lintho tse sebetsang, ho fokotsa khanyetso ho 50-200μΩ. Li-sensor tsa khatello ea matla ka har'a mechini ea li-welding ea maqhubu a mahareng li lekola ka nako ea nnete, ho netefatsa hore ho feto-fetoha ha maemo ho laoloa ka har'a ± 3%.
- Ntlafatso ea Waveform ea Hona joale
Theknoloji e mahareng-ea ho feto-fetoha ha maqhubu e ka hlahisa mefuta e fapaneng ea maqhubu, joalo ka maqhubu a trapezoidal le a pulsed wave. Ha u cheseletsa tšepe e sa hloekang ea 0.5mm, -mokhoa oa pulse o mongata (mohlala, 10kA preheating bakeng sa 2ms e lateloang ke 15kA main welding bakeng sa 5ms) e thibela ka mokhoa o atlehileng ho thibela spatter le ho ntlafatsa nugget density.
- Thermal Balance Mechanism
Seseteme e hahelletsoeng ka-ka har'a mohatsela (thempereichara ea metsi 25 degrees ±2 degrees ) e nka 70% ea mocheso oa eleketrode. Algorithm ea PID e fetola lebelo la phallo ea metsi ho netefatsa hore mocheso oa elektrode ha o fete likhato tse 150. Lintlha tsa liteko tse tsoang moleng oa tlhahiso ea likoloi li bontšitse hore ka mor'a li-welds tse 500 tse latellanang, mocheso oa elektrode o ile oa eketseha ka likhato tse 82 feela.
3. Liphapang tsa Theknoloji Ha li Bapisoa le Mechini ea Welding ea Matla a Tloaelehileng
| Papiso Dimension | Welder ea Maqhubu a Bohareng | Matla a Maqhubu a Welder |
|---|---|---|
| Maqhubu a Tshebetso | 1-4kHz | 50/60Hz |
| Lebelo la Hona Joale la Karabelo | 0.5ms{1}}tokiso ea boemo | 20ms{1}}tokiso ea boemo |
| Ntho e Matla | E kholo ho feta kapa e lekana le 0.95 | 0.6-0.7 |
| Aluminium Welding Bokhoni | 0.3-4mm botenya | Max 1.5mm (ho hlokahala kalafo e khethehileng) |
| Electrode Life | 80,000-120,000 cycles (chrome-plated electrode) |
30,000-50,000 potoloho |
4. Maemo a Tloaelehileng a Kopo
- Li-Modules tse Ncha tsa Battery Vehicle Vehicle: Ho sebelisa litšobotsi tsa DC tsa li-welding tse mahareng tsa maqhubu, foil ea aluminium ea 0.3mm e cheselitsoe ka ho nepahala ha taolo ea nugget ea ± 0.1mm, e kopanang le litekanyetso tsa ISO 18278-2.
- Multi-Layer Plate Welding: Ka har'a lirope tsa lipoleiti tsa tšepe tse 3mm+2mm, tekhenoloji ea mats'eliso e feto-fetohang e tiisa hore ho futhumatsa ho leka-lekaneng ha lipoleiti tse ka holimo le tse tlase, ho eketsa matla a ho kuta ka 25%.
- Likaroloana tsa Elektronike tse nepahetseng: Ka ho sebelisa 0.1ms-level micro{2}}pulse welding, e sebetsa ka katleho ho tjheseletsa e sireletsang mohala oa thebe, ka sebaka se amehileng-ka tlase ho kapa ho lekana le 0.05mm.
Qetello
Mechini ea ho tjheseletsa sebaka se maharengfumana ho nepahala ho phahameng le ho sebetsa hantle ha matla ts'ebetsong ea welding ka ho sebelisana ha theknoloji ea inversion, tlhahiso ea DC, le taolo e bohlale. Taba ea mantlha ke ho fetola motlakase oa khale hore e be matla a mahareng-a maqhubu a mahareng le ho tlisa mocheso o nepahetseng ka ho koala{2}}loop control ka potlako. Ha ho sebelisoa-lisebelisuoa tsa semiconductor tsa moloko oa boraro (mohlala, SiC), ho lebeletsoe hore makhetlo a ho sebetsa a mechine ea tšubuhlellano ea sebaka se mahareng e lebelletsoe ho feta 10kHz nakong e tlang, 'me a tlose lithibelo tsa tekheniki mabapi le ho tjheseletsa-lisebelisoa tse tšesaane le litšepe tse sa tšoaneng. Bakeng sa likhoebo tsa tlhahiso tse hahamallang boleng ba tjheseletsa le katleho ea tlhahiso, kutloisiso e tebileng ea molao-motheo oa ts'ebetso ea mechini ea ho tjheseletsa sebakeng sa maqhubu ke senotlolo sa ho ntlafatsa maemo a ts'ebetso le ho ntlafatsa tlholisano ea sehlahisoa.
