I. Kakaretso
Ka nts'etsopele e potlakileng ea tlhahiso ea indasteri ea mechini, meaho e cheselitsoeng joalo ka boenjiniere ba sejoale-joale le likepe tsa khatello li ntse li tsoela pele ho ea mekhoeng e ntseng e eketseha le e bobebe. Litlhokahalo tsa limaraka tsa matla a tšepe li ntse li phahama le ho feta, ha li hloke feela thepa e ntle ea mochini, empa hape le ts'ebetso e ntle ea ts'ebetso, weldability le khanyetso ea crack.
Q690 tšepe ke ea tšepe ea matla a holimo e cheselitsoeng, moo Q e emelang chai, 'me 690 e bolela hore matla a tlhahiso ke 690MPa. 690MPa grade tšepe e na le chai e ngata le matla a thata, 'me e sebelisoa haholo mecheng ea merafo ea mashala, mechine ea kaho, boenjiniere ba leoatleng, li-platform tsa lebōpong la leoatle, likepe tsa khatello, joalo-joalo, tse hlokang hore tšepe e be le matla a mangata a lihlahisoa le moeli oa mokhathala, ho ba le tšusumetso e ntle, Cold. formability le e babatsehang weldability.
2.Kenyelletso e khuts'oane ea poleiti ea tšepe ea Q690
| Machaba Q690 boemo ba tšepe | Q690A | Q690B | Q690C | Q690D | Q690E | Q690F |
| Masiba | Ho chesa | Ho tima + ho halefisa (boemo bo tingoeng le bo halefileng) | ||||
| Lintho tse litšila | Holimo P/S | P/S e tlase | Bonyane P/S | |||
| Litlhoko tse Hlollang | NO | Tloaelo e tloaelehileng ea mocheso | 0℃ | -20 ℃ | -40 ℃ | -60 ℃ |
Leha ho le joalo, hajoale, poleiti ea tšepe ea 690MPa bakeng sa likepe tsa khatello ea lapeng e ipapisitse le maemo a Europe EN10028-6, mme thepa e amehang e thathamisitsoe ka bokhutšoanyane tafoleng e latelang:
| Hlahisa tšepe ea 690MPA bakeng sa lisebelisoa tse tloaelehileng tsa khatello ea Europe | P690Q | P690QH | P69QL1 | P69QL2 |
| Masiba | mabele a matle a tinngweng le tshepe e futhumetseng | |||
| litlhoko tsa matla | Yield≥690MPa(plate thickness≤50mm) Tensile770-940MPa | |||
| Lintho tse litšila | P≤0.025%,S≤0.015% | P≤0.02%,S≤0.010% | ||
| Litlhoko tse Hlollang | 20℃≥60J | 20℃≥60J | 0℃≥60J | -20℃≥40J |
| 0℃≥40J | 0℃≥40J | -20℃≥40J | -40℃≥27J | |
| -20℃≥27J | -20℃≥27J | -40℃≥27J | -60 ≥27J | |
| Libaka tsa kopo tse ka sehloohong | Mehaho e nang le khatello ea maikutlo kapa likepe tsa khatello tse nang le litlhoko tse tlase tsa boima bo matla | Tanka ea spherical e nang le litlhoko tse phahameng tsa tekheniki | Tanka e metsi ea metsi ea khase ea metsing | |
Joalo ka poleiti ea tšepe bakeng sa litanka tsa polokelo le matla a khatello, e tlameha ho ba le matla a matle le ho tiea, ts'ebetso e batang ea ho kobeha le kutlo e tlase ea crack. Leha tšepe e tingoeng le e halefileng ea Q690 e na le boleng bo tlase ba khabone le thepa e felletseng e felletseng, e ntse e na le tšekamelo e itseng ea ho thatafala ha e bapisoa le litšepe tse ling tsa khatello ea 50/60kg, 'me ho hlokahala kalafo ea mocheso ka mor'a weld. Leha ho le joalo, palo e kholo ea liphuputso tsa liteko li bonts'itse hore bakeng sa lisebelisoa tsa tšepe tsa Q690, boima bo tlase ba mocheso bo tla senyeha haholo ka mor'a phekolo ea mocheso oa khatello ea kelello, 'me ka ho eketseha ha mocheso oa mocheso oa mocheso le ho fokotseha ha mocheso oa mocheso, ho senyeha ha mocheso. ea ho tjheseletsa consumable toughness tla bonahala ho feta. Ka hona, ho bohlokoa haholo ho hlaolela matla a phahameng, matla a matla a matla, le lithupa tsa welding tse phekolehang mocheso bakeng sa tšepe ea Q690 ho sebelisa tšepe ea Q690 ka katleho lisebelisoa tse jereng khatello, ho fokotsa lisebelisoa tsa tšepe le ho fokotsa litšenyehelo tsa tlhahiso.
3.Kenyelletso e khuts'oane ea molamu oa rona oa welding oa tšepe oa Q690
| Ntho | Standard | Mofuta oa letlalo | Polarity | likarolo tse ka sehloohong |
| GEL-118M | AWS A5.5 E1108MISO 18275-BE7618-N4M2A | Mofuta oa tšepe o tlase oa hydrogen | DC+/AC | Matla a phahameng, haedrojene e tlase, ts'ebetso e phahameng ea deposition, thepa e tsitsitseng ea mochini, matla a matla a mocheso a tlase ho -50 ° C, le matla a ts'usumetso e ntle ho -40 ° C kamora kalafo ea mocheso. |
| GEL-758 | AWS A5.5 E11018-GISO 18275-BE7618-G A | Mofuta oa tšepe o tlase oa hydrogen | DC+/AC | Hydrojene e tlase haholo, ts'ebetso e phahameng ea deposition, boima bo phahameng (-60℃≥70J), matla a matla a tšusumetso ho -40/-50 ℃ kamora kalafo ea mocheso. |
| GEL-756 | AWS A5.5 E11016-GISO 18275-BE7616-G A | Mofuta o tlase oa hydrogen potassium | AC/DC+ | Hydrojene e tlase haholo, AC/DC+ merero e 'meli, ho ba le tšusumetso e matla (-60 ≥70J), matla a matla a tšusumetso ho -50/-60 ℃ kamora kalafo ea mocheso. |
4.Q690 tšepe tjheseletsa molamu mochine tshebetso pontshi
| Ntho | As-welded mechine thepa | ||||||
| Fana ka MPA | Tensile MPA | Eketsa % | Thepa ea tšusumetso J/℃ | Teko ea radiographic | Hydrojene e ka senyehang Ml/100g | ||
| -50 ℃ | -60 ℃ | ||||||
| AWS A5.5 E11018M | 680- 760 | ≥760 | ≥20 | ≥27 | - | I | - |
| ISO 18275-B E7618-N4M2A | 680- 760 | ≥760 | ≥18 | ≥27 | - | I | - |
| GEL-118M | 750 | 830 | 21.5 | 67 | 53 | I | 3.2 |
| AWS A5.5 E1101X-G | ≥670 | ≥760 | ≥15 | - | - | I | - |
| ISO 18275B E761X-GA | ≥670 | ≥760 | ≥13 | - | - | I | - |
| GEL-758 | 751 | 817 | 19.0 | 90 | 77 | I | 3.4 |
| GEL-756 | 764 | 822 | 19.0 | 95 | 85 | I | 3.6 |
Hlahisa:
1. "X" e tšoailoeng ka fonte e khubelu ho American Standard le European Standard e emela mofuta oa letlalo la lithethefatsi.
2. GEL-758 e lumellana le E11018-G le ISO 18275-B E7618-G A ho AWS le litekanyetso tsa ISO ka ho latellana.
3. GEL-756 e lumellana le E11016-G le ISO 18275-B E7616-G A ho AWS le litekanyetso tsa ISO ka ho latellana.
Mechini ea thepa ea Q690 tšepe tjheseletsa molamu boemong ba mocheso mocheso
| Ntho | Mechanical thepa ea mocheso tšoaroa boemo | ||||||
| Fana ka MPA | Tensile MPA | Eketsa % | Thepa ea tšusumetso J/℃ | Ho futhumatsa ℃*h | |||
| -40 ℃ | -50 ℃ | -60 ℃ | |||||
| Sepheo sa morero | ≥670 | ≥760 | ≥15 | ≥60 | ≥52 | ≥47 | 570*2 |
| GEL-118M | 751 | 827 | 22.0 | 85 | 57 | - | 570*2 |
| GEL-758 | 741 | 839 | 20.0 | 82 | 66 | 43 | 570*2 |
| GEL-756 | 743 | 811 | 21.5 | 91 | 84 | 75 | 570*2 |
Hlahisa:
1. Litekanyetso tse amanang le AWS le ISO ha li na litlhoko tsa ts'ebetso ea kalafo ea mocheso bakeng sa lihlahisoa tse ka holimo. Liphekolo tse kaholimo tsa mocheso li akaretsoa ho latela maemo a botekgeniki a bareki ba bangata mme ke tsa litšupiso feela.
2. GEL-118M e na le matla a ts'ebetso e babatsehang ho -40 ° C ka mor'a phekolo ea mocheso, 'me ho senyeha ha tšusumetso ho -50 ° C ho totobetse haholoanyane.
3. Ka mor'a phekolo ea mocheso, GEL-758 e na le matla a ts'ebetso e babatsehang ho -40 ° C, matla a ts'ebetso e ntle ho -50 ° C, le ho senyeha ho totobetseng ka mocheso o tlase ho -60 ° C.
4. Ho senyeha ha matla a matla a mocheso a tlaase a GEL-756 ka mor'a phekolo ea mocheso e batla e le nyenyane, 'me mocheso o tlaase oa mocheso ho -60 ° C o ntse o le molemo.
Pontšo ea Weldability ea Q690 tšepe tjheseletsa molamu
1.Flat fillet welding (φ4.0mm)
GEL-118M tjheseletsa fillet e bataletseng pele le ka morao ho tloswa ha slag (DC+)
Pele le ka morao ho tlosoa ha slag ea GEL-758 flat fillet welding (DC+)
GEL-756 fillet tjheseletsa pele le ka mor'a ho tlosoa ha slag (AC)
GEL-756 e bataletseng fillet tjheseletsa pele le ka mor'a ho tlosoa ha slag (DC+))
Q690 tšepe tjheseletsa molamu tjheseletsa mehato ea tšireletso
1. Ho boloka lisebelisoa tsa welding:
Lisebelisoa tsa welding li khothalletsoa hore li bolokoe tlas'a mocheso o sa khaotseng le maemo a omileng, 'me li behoe holim'a li-pallets kapa lishelefong, ho qoba ho kopana ka ho toba le marako le fatše.
2. Ho itokisa pele ho tjheseletsa:
Tlosa ka ho feletseng mongobo, mafome, litšila tsa oli, joalo-joalo holim'a lisebelisoa tsa motheo, 'me u qobe mongobo o holim'a metsi kapa ho pepesehela pula le lehloa.
3. Mehato e thibelang moea:
Ha ho tjheseletsa, ho lokela ho netefatswa hore lebelo le phahameng la moya sebakeng sa welding ha le fete 2m/s. Ho seng joalo, mehato ea tšireletso e lokela ho nkoa.
4. Preheating:
Ho khothalletsoa ho sebelisa lisebelisoa tsa ho futhumatsa tsa motlakase ho futhumatsa sesebediswa ho feta 150 ° C pele ho tjheseletsa. Le pele ho tjheseletsa, e lokela ho futhumatswa ho feta 150°C.
5. Taolo ea mocheso le mocheso tseleng:
Nakong ea ts'ebetso eohle ea welding, mocheso oa interpass ha oa lokela ho ba tlase ho feta mocheso oa preheating, 'me mocheso o khothalletsoang oa ho feta ke 150-220 ° C.
6. Ho tlosoa ha haedrojene ka mor'a ho cheselletsa:
Kamora hore seam sa weld se kenngoe, hang-hang eketsa mocheso oa mocheso oa motlakase ho 250 ℃ ~ 300 ℃, o boloke o futhumetse lihora tse 2 ho isa ho tse 4, ebe o pholile butle.
① Haeba botenya ba sesebelisoa sa mosebetsi ke ≥50mm, nako ea ho ts'oara e lokela ho eketsoa ho lihora tse 4-6, ebe e pholile butle.
② Tlas'a maemo a botenya bo boholo le thibelo e kholo, dehydrogenation e le 'ngoe e ka eketsoa ka mor'a ho cheselletsa ho 1/2 botenya,' me butle-butle e pholile mocheso oa interpass.
7. Ponahalo ea fatše:
Ho kgothaletswa ho sebelisa welding ea multilayer le multi-pass welding, 'me lebelo la welding le lokela ho bolokoa ka lebelo le sa khaotseng.
More information send to E-mail: export@welding-honest.com
Nako ea poso: Jan-10-2023