AISI 430: yam ntxwv, analogue

2024 Tus sau: Howard Calhoun | [email protected]. Kawg hloov kho: 2023-12-17 10:28

AISI 430 yog cov hlau tsis muaj npib tsib xee. Nws yog dav siv hauv kev lag luam zaub mov. Qhov no yog vim qhov tseeb tias tsuas yog hom hlau no tau tso cai los ntawm tsoomfwv cov ntaub ntawv, thiab cov zaub mov siav ntawm hom hlau no yuav tsis muaj cov khoom tsis huv.

piav qhia dav dav ntawm cov khoom

AISI 430 yog siv ntau yam ntawm cov tshuab uas tuaj yeem tiv nrog cov khoom noj thaum ua noj, khaws cia, thiab lwm yam. Cov lus piav qhia dav dav ntawm cov khoom siv no yog lub hom phiaj dav dav ferritic chromium stainless hlau. Cov khoom siv raw no yog cov yam ntxwv hauv qab no:

• Lub zog thiab kev ua haujlwm zoo ntawm cov hlau no yog qhov siab tshaj plaws.
• siab corrosion kuj. Huab cua kuj tseem pom, uas yog vim muaj cov ntsiab lus ntau ntawm chromium thiab cov ntsiab lus qis carbon.
• AISI 430 yog qhov ua tau zoo heev. Zoo rau kev kos duab, stamping, qhov xuas nrig ntaus thiab lwm yam.

Ntxiv nrog rau kev lag luam khoom noj, cov khoom siv no kuj tau ua tiav hauv lwm qhov kev lag luam: architecture, tsim, civilmechanical engineering, automotive kev lag luam.

lwm yam khoom siv siv nyob qhov twg?

AISI 430 ferritic cov khoom siv tau ua tiav hauv kev lag luam ntawm kev tsim tshuab cov ntsiab lus thiab qhov chaw rau cov khoom siv hauv kev lag luam cawv. Nws raug tso cai siv cov khoom no txawm tias qhov twg muaj kev sib cuag ncaj qha nrog cov khoom xws li yuav tsum, cawv, cognac ntsuj plig.

Nws yog ib qho tseem ceeb heev uas yuav tsum nco ntsoov ntawm no tias muaj cov analogues ntawm AISI 430. Cov hom hlau no muaj nyob rau hauv kev lag luam alloyed npib tsib xee-dawb pawg ntawm cov khoom. Kev siv cov analogues zoo li no hauv kev lag luam khoom noj, hauv lwm cov kev lag luam kev lag luam raug tso cai txawm tias los ntawm ntau lub xeev cov qauv. Wb hais tias tus qauv ua cookware thiab stainless hlau tso cai rau koj siv cov hlau 10 x 17. Txawm li cas los xij, cov koob xws li AISI 400, uas suav nrog AISI 430, muaj qee qhov tsis zoo.

430 khoom specifications

Ib qho ntawm cov teeb meem me me yog tias cov hlau no tsis tuaj yeem siv los hloov cov qib nickel. Qhov no txawm hais tias cov khoom lag luam tsis muaj npib tsib xee yog qhov zoo tshaj rau lawv cov kwv tij hauv txhua qhov kev hwm.

Cov yam ntxwv ntawm AISI 430 tso cai rau nws kom ua tiav hauv kev tsim khoom ntawm ntau yam khoom siv rau kev lag luam khoom noj thiab kev ua haujlwm. Qhov no yog hais txog kev teeb tsa siv roj thiab roj, nqaij, bakery, cawv, dej cawv thiab lwm yam. Tsis tas li ntawd, cov khoom siv ua los ntawm cov hlau no kuj tuaj yeem siv rau ntau theem.npaj zaub mov. Chromium steels, uas lub hom no belongs, thiab nws cov analogues 08 x 17 thiab 12 x 17, muaj ib tug tsawg coefficient ntawm thermal expansion (CTE), tshwj xeeb tshaj yog thaum piv nrog chromium nickel-muaj austenitic qib. Lawv kuj muaj ntau dua parameter xws li thermal conductivity. Ob tus yam ntxwv ntawm AISI 430 no ua rau nws siv ntau dua txawm tias nyob rau hauv cov khoom siv tubular, cov qauv hloov hluav taws xob, cov yees txias, thiab lwm yam.

Steel properties

Qhov qis coefficient ntawm thermal expansion kuj muab qhov zoo ntawm kev sib txuas kom zoo dua rau kev hloov hluav taws xob sai. Cov cuab yeej no tau nquag siv hauv cov tshuab cua txias rau cov thawv ntim khoom noj. Tsis tas li ntawd, AISI 430 steel tau ua pov thawj tias qhov zoo tshaj plaws nyob rau hauv qhov chaw gaseous uas tshwm sim thaum lub sij hawm combustion ntawm ntau yam roj. Qhov no muaj tseeb txawm rau cov chaw ib puag ncig uas pom muaj cov khoom ua kom tiav thiab tsis tiav combustion. Vim yog cov khoom no, cov hlau tau nquag siv rau kev tsim cov casings thiab cov kav dej rau cov tshuab nruab nrab, rov ua dua, thiab lwm yam rau cov pa pa.

Kev siv cov khoom siv no kuj yog vim qhov tseeb tias cov txheej txheem redox nyuaj tshwm sim hauv cov tshuab no, nrog rau qhov kub thiab txias, cov tshuaj tiv thaiv catalytic thiab ib puag ncig muaj roj. AISI 430 stainless hlau tiv taus tag nrho cov kev cuam tshuam zoo dua li lwm cov ntaub ntawv.

Cov ntsiab lusTshuaj

Vim nws cov yam ntxwv tshuaj, cov khoom no feem ntau suav hais tias yog cov khoom siv ntau yam uas tuaj yeem siv tau hauv yuav luag txhua qhov kev lag luam. Cov muaj pes tsawg leeg ntawm cov hlau no suav nrog cov tshuaj xws li chromium - 16-18%, magnesium - 1%, phosphorus - 0.04%, sulfur - 0.03% thiab ntau lwm yam Ci, C.

Nws tsim nyog sau cia tias yuav luag txhua qhov chaw cov hlau no yog cov pab pawg ntawm cov ntaub ntawv uas tiv taus corrosion zoo. Txawm li cas los xij, nyob rau hauv kev xyaum nws tseem yog ib tug sparingly alloyed tshuaj. Qhov no txhais tau hais tias cov xeb kuj qis dua me ntsis, tab sis tus nqi ntawm cov khoom siv qis dua. Yog tias peb tham txog qee qhov kev ntsuas lub cev ntawm lub hom, nws tsim nyog sau cia tias txhua qhov kev kuaj xyuas tau ua tiav ntawm qhov kub ntawm 25 degrees Celsius, thiab qhov ceev zoo tshaj plaws ntawm cov khoom yog 7.8 x 1000 kg / m 3. Hauv qhov no, tus txheeb ze elongation yog 20%, thiab lub zog tensile yog 480 MPa. Yog tias peb ntsuas qhov hardness ntawm cov khoom no raws li thoob ntiaj teb teev, ces nws yuav sib npaug rau 88 HRB.

vuam thiab cov khoom ua haujlwm

Nws tsim nyog hais tias cov khoom siv no zoo heev rau kev vuam los ntawm txhua txoj kev thiab txhua lub tshuab vuam. Txawm li cas los xij, qhov zoo tshaj plaws yog kev siv arc vuam hauv inert gases. Tsis tas li ntawd, qhov chaw ntawm lub tshuab vuam yog pom zoo kom muab ntsia los ntawm saum toj no. 309L vuam hlau tuaj yeem siv los ua cov khoom muab tub lim. Raws li kev kho mob rau welds, nws yog qhov zoo tshaj plaws los siv tshuaj los yog siv tshuab, ua raws li cov kauj ruam passivation.

Tsuasvuam, AISI 430 qiv nws tus kheej yooj yim heev rau lwm hom kev ua. Annealing ntawm cov khoom yog nqa tawm ntawm qhov kub ntawm 700-800 degrees Celsius, thiab tsuas yog txias hauv huab cua. Nws yog ib qho tsim nyog yuav tsum tau sau tseg ntawm no tias tempering rau cov hlau no tsis tas yuav tsum tau, txawm li cas los xij, yog tias nws tseem tsim nyog, ces qhov zoo tshaj plaws kub yog 200-300 degrees Celsius. Kub ua hauj lwm kuj yuav ua tau. Txhawm rau ua qhov no, nws yog qhov tsim nyog los tsim qhov kub thiab txias ntawm 1100 txog 1150 degrees Celsius. Qhov kawg kub ntawm hom kev ua no yuav tsum tsawg dua 750 degrees. Nws yuav tsum raug sau tseg tias kev ua haujlwm txias feem ntau yog xaiv rau AISI 430.