Kaslakan ya iisipen na totoo yasay balbulana stainless steel tan ag-onkalawang. No ontan, nayarin problema itan ed bakal. Saya so sakey a dapag ya lingon panmoria nipaakar ed kakulangan na pakatalos ed stainless steel, ya nayarin mankalawang met ed pigaran kondisyon.
Say stainless steel et walay abilidad ton manresisti ed atmospheric oxidation—salanti, ag-onkupas ed kalat, tan walaan met na abilidad ya man-corrode ed media ya walaan na asido, alkali, tan asin—salanti, ag-onkapuy. Balet, say kabaleg na anti-corrosion ya abilidad to et manguuman lapud kemikal a komposisyon na asero to, say kipapasen na proteksion to, saray kondisyon na pangusar tan say klase na media ed kaliberliber.
Say stainless steel et kaslakan ya naapag ed:
Kaslakan, unong ed metallographic structure, say ordinaryon stainless steel et naapag ed taloran kategorya: austenitic stainless steel, ferritic stainless steel, tan martensitic stainless steel. Base ed sarayan taloran manunan metallographic structures, parad espisipikon pankaukolan tan gagala, naala iray dual-phase steels, precipitation-hardening stainless steels tan high-alloy steels ya walay iron content ya kulang ed 50%.
1. Austenitic stainless steel.
Say matrix et dominado na austenite structure (CY phase) na face-centered cubic crystal structure, aliwan magnetic, tan manunan napabiskeg na cold working (tan nayarin manresulta ed pigaran magnetic properties) ya stainless steel. Say American Iron and Steel Institute et tinuro na saray numero ed 200 tan 300 ya serye, a singa say 304.
2. Ferritic stainless steel.
Say matrix et dominado na ferrite structure ((sakey a phase) na body-centered cubic crystal structure, ya magnetic tan ag nayarin pabiskegen na heat treatment, balet nayarin napabiskeg na daiset no cold working. Say American Iron and Steel Institute et walay marka ton 430 tan 446.
3. Martensitic stainless steel.
Say matrix et sakey a martensitic ya istruktura (body-centered cubic o cubic), magnetic, tan saray mekanikal a kablian to et nayarin i-adjust panamegley na heat treatment. Say American Iron and Steel Institute et tatawagen na saray numeron 410, 420 tan 440. Say martensite et walay austenite ya istruktura to no atagey so temperatura, tan no palemewen ed temperatura na kuarto diad dugan kapeles, say austenite ya istruktura et nayarin magmaliw ya martensite (salanti, napaawet).
4. Austenitic-ferritic (duplex) stainless steel.
Say matrix et walaan na austenite tan ferrite ya duaran-phase ya istruktura, tan say karga na less-phase matrix et kaslakan ya mas atagey nen say 15%. Magnetic itan tan nayarin pabiskegen no ambetel so pankimey to. Say 329 et sakey a tipikal a duplex stainless steel. No ikompara ed austenitic stainless steel, say dual-phase steel et atagey so biskeg to, tan say resistensya to ed intergranular corrosion tan chloride stress corrosion tan pitting corrosion et mas inmaligwas.
5. Precipitation hardening stainless steel.
Say matrix et austenite o martensitic ya istruktura tan nayarin paeleten panamegley na precipitation hardening. Say American Iron and Steel Institute et walaan na 600 ya serye na numero, a singa say 630, ya 17-4PH.
Diad inkalapagan, nilikud ed saray alloy, say resistensya ed corrosion na austenitic stainless steel et medyo ekselentin maong. Diad agtanton makaderal ya kaliberliber, nayarin usaren so ferritic stainless steel. Diad sakey a kaliberliber ya medyo makaderal, no say materyal et nakaukolan ya atagey so biskeg odino atagey ya inka-malet, nayarin usaren so martensitic stainless steel tan precipitation hardening stainless steel.
Kaslakan ya grado tan kablian na stainless steel
01 304 Stainless Steel
Sakey iya ed saray sankalaknaban ya uusaren tan sankalaknaban ya uusaren ya austenitic stainless steels. Saya so matukoy ed panaggawa na saray deep-drawn parts tan acid pipelines, container, structural parts, nanduruman instrument bodies, tan arum nira. Nayarin usaren met iya ed panaggawa na non-magnetic, low-temperature ya kagawaan tan parte.
02 304L Stainless Steel
Pian nasolbar so problema na ultra-low carbon austenitic stainless steel ya ginawa lapud inkiletneg na Cr23C6 ya sengegan na graben intergranular corrosion tendency na 304 stainless steel diad pigaran kondisyon, say sensitized state intergranular corrosion resistance to et mas maong nen say 304 stainless steel. Likud ed medyo abeban biskeg, saray arum ya kablian to et pareho ed 321 stainless steel. Saya so manunan uusaren parad saray kagawaan tan kabiangan ya ag-onkupas ya ag nayarin isulong ed solusyon kayari na panag-welding, tan nayarin usaren ed panggawa na nanduruman instrumento.
03 304H Stainless Steel
Say loob na sanga na 304 stainless steel et walay carbon mass fraction ya 0.04%-0.10%, tan say performance to ed atagey ya temperatura et mas maong nen say 304 stainless steel.
04 316 Stainless Steel
Say pangiyarum na molybdenum base ed 10Cr18Ni12 ya asero et manggawa ed asero ya walaan na maong ya resistensya ed pambawas na medium tan pitting corrosion. Diad danum na dayat tan arum niran media, say resistensya ed corrosion et mas maong nen say 304 stainless steel, ya manunan uusaren parad saray materyales ya ag-onkupas.
05 316L Stainless Steel
Say ultra-low carbon steel et walaan na maong ya resistensya ed sensitized intergranular corrosion tan matukoy ed panaggawa na saray welded parts tan kagawaan ya makapal so sukat na seksion to, a singa saray materyales ya ag-onkupas ed kagawaan ed petrochemical.
06 316H Stainless Steel
Say loob na sanga na 316 stainless steel et walay carbon mass fraction ya 0.04%-0.10%, tan say performance to ed atagey ya temperatura et mas maong nen say 316 stainless steel.
07 317 Stainless Steel
Say pitting corrosion resistance tan creep resistance et mas maong nen say 316L stainless steel, ya uusaren ed panaggawa na petrochemical tan organic acid corrosion resistant ya kagawaan.
08 321 Stainless Steel
Say titanium-stabilized austenitic stainless steel, ya inyarum toy titanium pian napaaligwas so intergranular corrosion resistance, tan walaan na maong iran mekanikal a kablian ed atagey a temperatura, et nayarin salatan na ultra-low carbon austenitic stainless steel. Likud ed saray espisyal ya okasyon a singa say atagey a petang odino resistensya na hydrogen corrosion, ag-itan irerekomenda ya usaren.
09 347 Stainless Steel
Niobium-stabilized austenitic stainless steel, ya inyarum toy niobium pian napaaligwas so intergranular corrosion resistance, say resistensya ed corrosion ed acid, alkali, asin tan arum niran corrosive media et pareho ed 321 stainless steel, maong so welding performance to, nayarin usaren bilang corrosion-resistant material tan anti-corrosion Say ambetel ya asero et manunan uusaren ed lawak tan petrolyo, singa say panggawa na saray pananginan, tubo, heat exchanger, shaft, tubo na hurnoan ed saray hurnoan na industriya, tan saray thermometer na tubo na hurnoan.
10 904L Stainless Steel
Say super complete austenitic stainless steel et sakey a klase na super austenitic stainless steel ya inimbento na OUTOKUMPU ed Finland. , Maong so resistensya to ed corrosion ed saray non-oxidizing acid a singa say sulphuric acid, acetic acid, formic acid tan phosphoric acid, tan maong met so resistensya to ed crevice corrosion tan stress corrosion resistance. Saya so matukoy ed nanduruman konsentrasyon na sulfuric acid ya abeba nen 70°C, tan walaan na maong ya resistensya ed corrosion ed acetic acid tan nanlaok ya acid na formic acid tan acetic acid ed antokaman a konsentrasyon tan temperatura diad silong na normal a presyon.
11 440C stainless steel
Say martensitic stainless steel so walaan na sankatageyan ya inka-malet ed saray hardenable stainless steel tan stainless steel, ya say inka-malet to et HRC57. Manunan uusaren ed panggawa na nozzle, bearing,kumpapeybalbula cores,kumpapeybalbula yurongan, manggas,balbula sanga, tan arum nira.
12 17-4PH stainless steel
Say martensitic precipitation hardening stainless steel ya walay HRC44 ya inkaawet to et atagey so biskeg, inkaawet tan resistensya tod corrosion tan ag nayarin usaren ed temperatura ya onsulok ed 300°C. Maong so resistensya to ed atmospera tan say asido o asin ya nalaok. Say resistensya to ed corrosion et pareho ed 304 stainless steel tan 430 stainless steel. Uusaren iya pian manggawa na saray plataporma ed gilig na dayat, saray payak na turbina,kumpapeybalbula (saray utek na balbula, saray yurongan na balbula, saray manggas, saray sanga na balbula) wait.
In balbula desinyo tan panagpili, nanduruman sistema, serye, tan grado na stainless steel so mabetbet ya nabet. No manpipili, say problema et nepeg ya ikonsidera manlapud nanduruman punto de bista a singa say espisipikon proseso, temperatura, presyon, saray parte ya na-stress, corrosion, tan gastos.
Oras na pangi-post: Hulyo-20-2022
