Saky Steel e hlahisa 440 letoto la lihlooho tse thata martensitic tšepe stainless sheets & plates 440A, 440B, 440C
AISI 440A, UNS S44002, JIS SUS440A, W.-nr. 1.4109 ( DIN X70CrMo15 ) lishiti tsa tšepe tse se nang tšepe, lipoleiti, lifolete
AISI 440B, UNS S44003, JIS SUS440B, W.-nr. 1.4112 ( DIN X90CrMoV18 ) matlapa a tšepe e sa hloekang, lipoleiti, lifolete
AISI 440C, UNS S44004, JIS SUS440C, W.-nr. 1.4125 ( DIN X105CrMo17 ) lishiti tsa tšepe tse se nang tšepe, lipoleiti, lifolete
440A 440B 440C karolo ea lik'hemik'hale :
| Kereiti | C | Si | Mn | S | P | Cr | Ni | Mo |
| 440A | 0.60~0,75 | ≤1 | ≤1 | ≤0.030 | ≤0.040 | 16.00–18.00 | - | ≤0.75 |
| 440B | 0.85–0,95 | ≤1 | ≤1 | ≤0.030 | ≤0.035 | 16.00–18.00 | ≤0.60 | ≤0.75 |
| 440C | 0.95 - 1.20 | ≤1 | ≤1 | ≤0.030 | ≤0.040 | 16.00–18.00 | - | ≤0.75 |
Likahare tsa carbon le boima ba 440A-440B-440C li eketsehile ka ho latellana ho tloha ho ABC (A-0.75%, B-0.9%, C-1.2%). 440C ke tšepe e ntle haholo ea boleng bo phahameng e nang le boima ba 56-58 RC. Litšepe tsena tse tharo li na le ho hanyetsa mafome hantle, 440A ke eona e ntle ka ho fetisisa, 'me 440C ke e tlaase ka ho fetisisa. 440C e tloaelehile haholo. Sebopeho sa lik'hemik'hale tsa tšepe e sa hloekang ea martensitic e khetholloa ka ho eketsoa ha lintho tse kang molybdenum, tungsten, vanadium, le niobium e thehiloeng ho motsoako oa likarolo tse fapaneng tsa 0.1% -1.0% C le 12% -27% Cr. Kaha sebopeho sa lisele ke sebopeho sa li-cubic tse bohareng ba 'mele, matla a theoha haholo mochesong o phahameng. Ka tlase ho 600 ° C, matla a mocheso o phahameng ke a phahameng ka ho fetisisa har'a mefuta eohle ea tšepe e sa hloekang, 'me matla a ho hahaba ke a phahameng ka ho fetisisa. 440A e na le thepa e babatsehang ea ho tima le ho thatafatsa le boima bo phahameng. E na le boima bo phahameng ho feta tšepe ea 440B le tšepe ea 440C. 440B e sebelisetsoa ho seha lisebelisoa, lisebelisoa tsa ho lekanya, li-bearings le li-valve. E na le boima bo phahameng ho feta tšepe ea 440A le boima bo phahameng ho feta tšepe ea 440C. 440C e na le boima bo phahameng ka ho fetisisa ba tšepe e sa hloekang le tšepe e sa keneleng mocheso 'me e sebelisetsoa li-nozzles le libering. 440F ke kereiti ea tšepe e ntlafatsang thepa e sehiloeng habonolo ea tšepe ea 440C bakeng sa lisebelisoa tsa othomathiki.
Nako ea poso: Aug-17-2018