Ukwakheka kwamakhemikhali

Isigaba 3: Okuqukethwe kwekhabhoni ≤0.19%, okuqukethwe kwe-silicon 0.18%-0.37%, okuqukethwe kwe-manganese 0.31%-0.64%, okuqukethwe kwe-phosphorus ne-sulfur ≤0.025%, futhi kuqukethe ne-nickel engu-3.18%-3.82%.

Isigaba 6: Okuqukethwe kwekhabhoni ≤0.30%, okuqukethwe kwe-silicon ≥0.10%, okuqukethwe kwe-manganese 0.29%-1.06%, okuqukethwe kwe-phosphorus ne-sulfur Konke ≤0.025%.

Izakhiwo zemishini

Isigaba 3: amandla okudonsa ≥450MPa, amandla okukhiqiza ≥240MPa, ukunwebeka ≥30% ubude, ≥20% ngokunqamula, izinga lokushisa lokuhlola umthelela ophansi lingu--150°F (-100°C).

Isigaba 6: amandla okudonsa ≥415MPa, amandla okukhiqiza ≥240MPa, ukunwebeka ≥30% ubude, ≥16.5% ngokunqamula, izinga lokushisa lokuhlola umthelela ophansi lingu--50°F (-45°C).

Inqubo yokukhiqiza

Ukuncibilikisa: Sebenzisa isithando sikagesi noma i-converter kanye neminye imishini ukuze ukhiphe i-oxidize, ususe i-slag bese uxuba insimbi encibilikisiwe ukuze uthole insimbi encibilikisiwe emsulwa.

Ukugingqa: Faka insimbi encibilikisiwe esigayweni sokugingqa ithubhu ukuze ugingqa, wehlise kancane kancane ububanzi bethubhu bese uthola ubukhulu bodonga obudingekayo, futhi ngesikhathi esifanayo, bushelelezi ubuso bethubhu lensimbi.

Ukucubungula okubandayo: Ngokusebenzisa ukucubungula okubandayo njengokudweba okubandayo noma ukugoqa okubandayo, ukunemba kanye nekhwalithi yobuso beshubhu lensimbi kungathuthukiswa kakhulu.

Ukwelashwa ngokushisa: Ngokuvamile, kulethwa esimweni sokujwayeza noma sokujwayeza kanye nesokushisa ukuze kuqedwe ukucindezeleka okusele ngaphakathi kwepayipi lensimbi futhi kuthuthukiswe ukusebenza kwalo okuphelele.

Inkambu yohlelo lokusebenza

I-Petrochemical: Isetshenziselwa ukukhiqiza amapayipi emikhumbi yokucindezela okuphansi kanye namapayipi okushintshanisa ukushisa okuphansi emkhakheni wephethiloli, imboni yamakhemikhali, njll., angahlangabezana nezidingo zokusetshenziswa ezindaweni eziphansi zokushisa, njengegesi yemvelo encibilikisiwe Amathangi okugcina igesi yemvelo, amapayipi okudlulisa ukushisa okuphansi, njll.

Igesi yemvelo: Ifanelekela amapayipi okudlulisa igesi yemvelo kanye namathangi okugcina igesi kanye neminye imishini ukuqinisekisa ukusebenza okuphephile ezindaweni ezishisa kakhulu.

Eminye imikhakha: Iphinde isetshenziswe emandleni kagesi, ezindizayo, nasekwakheni imikhumbi, njengezinto zokwakha eziyinhloko zama-condenser, ama-boilers kanye neminye imishini emishinini kagesi, kanye nezinto zokwakha eziyinhloko zezinhlelo ze-hydraulic, izinhlelo zikaphethiloli kanye neminye imishini ensimini yezindiza.

Imininingwane kanye nobukhulu

Imininingwane ejwayelekile kanye nobukhulu bunobubanzi obubanzi, njengobubanzi bangaphandle obungu-21.3-711mm, ubukhulu bodonga obungu-2-120mm, njll.
Ipayipi lensimbi elingenamthungo le-Gr.6, ikakhulukazi i-ASTM A333/A333M GR.6 noma i-SA-333/I-SA333M GR.6Ipayipi lensimbi elingenamthungo elinokushisa okuphansi, liyinto ebalulekile yezimboni, esetshenziswa kabanzi ngezikhathi ezahlukene ezidinga ukuqina okuphansi nokuqina okuphezulu. Okulandelayo yisingeniso esiningiliziwe sepayipi lensimbi elingenamthungo le-Gr.6:

1. Izindinganiso zokusebenzisa kanye nezinto zokwakha

Izindinganiso zokusebenzisa: Ipayipi lensimbi elingenamthungo le-Gr.6 lisebenzisa amazinga e-ASTM A333/A333M noma i-ASME SA-333/SA333M, akhishwa yi-American Society for Testing and Materials (ASTM) kanye ne-American Society of Mechanical Engineers (ASME) futhi asetshenziswa ngqo ukucacisa izidingo zobuchwepheshe zamapayipi ensimbi angenamthungo kanye namapayipi ensimbi ahlanganisiwe okushisa okuphansi.

Izinto: Ipayipi lensimbi elingenamthungo le-Gr.6 lipayipi lensimbi elingenayo i-nickel elingenawo amazinga okushisa aphansi, elisebenzisa insimbi eqinile enobukhulu obuphansi obunobukhulu obuncane obufakwe i-aluminium deoxidized, eyaziwa nangokuthi insimbi ebulewe yi-aluminium. Isakhiwo sayo se-metallographic siyi-cubic ferrite egxile emzimbeni.

2. Ukwakheka kwamakhemikhali

Ukwakheka kwamakhemikhali kwepayipi lensimbi elingenamthungo le-Gr.6 kuhlanganisa kakhulu:

Ikhabhoni (C): Okuqukethwe kuphansi, ngokuvamile akudluli ku-0.30%, okusiza ukunciphisa ukuphuka kwensimbi.

I-Manganese (Mn): Okuqukethwe kuphakathi kuka-0.29% no-1.06%, okungathuthukisa amandla nokuqina kwensimbi.

I-Silicon (Si): Okuqukethwe kuphakathi kuka-0.10% no-0.37%, okusiza inqubo yokususa i-oxidation ensimbini futhi kungathuthukisa amandla ensimbi ngezinga elithile.

I-Phosphorus (P) kanye ne-sulfur (S): Njengezinto ezingcolile, okuqukethwe kwazo kunqunyelwe ngokuqinile, ngokuvamile akudluli ku-0.025%, ngoba okuqukethwe okuphezulu kwe-phosphorus ne-sulfur kuzonciphisa ukuqina kanye nokushibilika kwensimbi.

Ezinye izinto ezixubayo: njenge-chromium (Cr), i-nickel (Ni), i-molybdenum (Mo), njll., okuqukethwe kwazo kulawulwa ezingeni eliphansi ukuqinisekisa ukusebenza kwezinga lokushisa eliphansi kanye nokusebenza okuphelele kwensimbi.

3. Izakhiwo zemishini

Ipayipi lensimbi elingenamthungo le-Gr.6 linezakhiwo ezinhle kakhulu zemishini, ikakhulukazi ezifaka:

Amandla okunamathela: Ngokuvamile aphakathi kuka-415 no-655 MPa, okuqinisekisa ukuthi ipayipi lensimbi lingagcina ubuqotho besakhiwo futhi livimbele ukuqhekeka lapho lingaphansi kwengcindezi.

Amandla okukhiqiza: Inani eliphansi lingaba ngu-240 MPa (lingaphinde lifinyelele ngaphezu kuka-200 MPa), ukuze lingakhiqizi ukuguguleka ngokweqile ngaphansi kwamandla athile angaphandle.

Ukwelulwa: okungenani u-30%, okusho ukuthi ipayipi lensimbi linekhono elihle lokuguqulwa kwepulasitiki futhi lingadala ukuguquka okuthile ngaphandle kokuphuka uma lelulwa ngamandla angaphandle. Lokhu kubaluleke kakhulu ekusetshenzisweni ezindaweni eziphansi zokushisa, ngoba izinga lokushisa eliphansi lingenza izinto zibe buthaka, futhi ukwakheka kwepulasitiki okuhle kunganciphisa ingozi yokwakheka okunjalo.

Ukuqina komthelela: Emazingeni okushisa aphansi ashiwo (njengo-45°C), amandla omthelela kumele ahlangabezane nezidingo ezithile zezinombolo ngokuqinisekiswa kokuhlolwa komthelela we-Charpy ukuqinisekisa ukuthi ipayipi lensimbi ngeke liqhekeke ngaphansi komthelela wokushisa ophansi.