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1. Ho khetholla le litšobotsi tsa physicochemical
| Sebopeho sa mokhatlo | Tloaelehileng | E tobileng | E tloaelehileng |
| Mofuta oa 'mele oa Ferritic | 1. High resistivity | 1 Khatello e ntle haholo ea ho hanyetsa corrosion | 0Cr13(405) |
| 1Cr17(430) | |||
| Mofuta oa martensitic | 1. Tloaelo ea ho thatafatsa e kholo, 'me carbon content e eketseha le eona. | 1Cr13(410) | |
| Mofuta oa Austenitic | 1 Coefficient ea katoloso ea mela e kholo | 0Cr18Ni9(304) | |
| 0Cr19Ni11(308) | |||
| 0Cr23Ni13(309) | |||
| 0Cr25Ni20(310) | |||
| 0Cr17Ni12Mo(316) | |||
| 0Cr17Ni12Mo2Nb/Ti(318) | |||
| 0Cr19Ni13Mo3(317) | |||
| 1Cr18Ni9Ti(321) | |||
| 0Cr18Ni11Nb(347) | |||
| 0Cr20Ni25Mo5Cu2(385) | |||
| O-iron duplex | 1. Intergranular corrosion resistance 2 stress corrosion resistance 3 pitting resistance | 00Cr22Ni5Mo3N(2205) | |
| Mofuta o thata oa pula | 1. Boima bo phahameng 2 polasetiki e futsanehileng | 0Cr17Ni4Cu4Mo2(630) |
Mofuta oa 'mele oa Ferritic
Mofuta oa martensitic
Mofuta oa Austenitic
Ho thatafala ha pula
Ea bobeli: ts'ebetso ea welding
Khetho ea lisebelisoa tsa tšepe tse sa hloekang li lokela ho latela molao-motheo oa "homogeneity".
1. Ferritic tšepe e sa hloekang Haeba ts'ebetso ea welding e futhumala ka 430-480 ° C ka nako e telele 'me e pholile butle-butle, ho bonolo haholo ho hlahisa 475 °C brittleness,' me litšila li tla phetha karolo ea bohlokoa.Ts'ebetso ea ho tjheseletsa e khothaletsa ho tjheseletsa hona joale ho tlase, ho potlaka, ho se na oscillation, le taolo e tlase ea mocheso oa interlayer nakong ea li-welding tse ngata.Ho tjheseletsa li-workpieces tse teteaneng, seam sa weld se tlameha ho hatelloa ho fokotsa khatello ea maikutlo.
2. Martensitic tšepe e sa hloekang mocheso-a ameha libaka embrittlement le tjheseletsa mapetsong batang ho hlokahala ho qoba ka hohle kamoo ho ka khonehang ha tjheseletsa, ka kakaretso nka preheating e tsamaellanang pele tjheseletsa (150-300 °C) le ka mor'a tjheseletsa mocheso kalafo (700-750 ° C) mehato, ts'ebeliso ea matla a maholo a mohala, haeba ho hlokahala, o ka khetha lisebelisoa tsa welding tsa austenitic.
3. Austenitic stainless steel Lintlha tse susumetsang tsa ho phatloha ho chesang le ho bola ha intergranular ke lintlha tse ka sehloohong tsa ho cheselletsa tšepe e joalo e sa hloekang, ka lebaka la litšobotsi tsa eona tsa 'mele, ho lokela ho nkoa matla a manyenyane bakeng sa ho cheselletsa, ho pholisa ka potlako le mocheso o tlase oa interlayer. lokela ho laoloa ha multilayer tjheseletsa.Loanela ho ba le ferrite e lekaneng ha u cheselletsa ho thibela ho hlaha ha mapetsong a mocheso.Indasteri ea petrochemical e kang hydrogenation reactors le lihlahisoa tse ling tse khethehileng, palo ea ferrite (FN) ea weld e hlalositsoe ka ho hlaka, ka kakaretso e hlokahala 3-10.
4. Austria-iron duplex stainless steel e na le tšekamelo e tlase ea ho peperana ha e bapisoa le tšepe ea austenitic;Ha ho bapisoa le tšepe ea ferritic, post-weld embrittlement e tlase, kahoo e na le weldability e babatsehang, ha e chese pele kapa ka mor'a ho futhumatsa, 'me ha ho na mapetsong a tjheseletsa a hlahisoang.Leha ho le joalo, ha ho futhumatsa mocheso o phahameng, ho na le tšekamelo ea hore lijo-thollo li hōle, 'me matla a manyenyane a mela e lokela ho nkoa ha ho chesetsoa.
5. Mokelikeli-o thata ka tšepe e sa hloekang Ka lebaka la boima bo phahameng, boima bo fokolang le polasetiki ea mofuta ona oa tšepe, le khatello e kholo ea masala a welding, ho bonolo ho hlahisa mapetsong.Ho khothalletsoa ts'ebetso ea welding e ts'oanang le tšepe e sa hloekang ea martensitic, empa mocheso oa preheating o hloka ho eketseha.
Hlokomela:Tekanyetso ea AWSA5.9 bakeng sa Stainless Steel Optical and Filler Wires le YB/T5092 Standard for Stainless Steel for Welding e bolela hore tlhahlobo ea lik'hemik'hale ea mehlala e qhibilihisitsoeng ea terata e kopantsoeng kapa e entsoeng ka likhoele ke eona feela teko e hlokahalang bakeng sa ho aroloa ha lihlahisoa tsena. mefuta.Ke hore, thepa ea mochini le liteko tse ling, ho latela litlhoko tsa bareki.
Letoto la li-electrode tsa letsoho tsa tšepe tse se nang tšepe tsa GES, lengolo la ho qetela la B ka lebitso la sehlahisoa le bontša seaparo se seputsoa, R e bonts'a seaparo se sefubelu, se kang GES-308R se emela seaparo se sefubelu sa GES-308, GES-312B se emela letlalo la pilisi e putsoa GES-312. .
Nako ea poso: Oct-13-2022