304 vs 304L Chitsulo chosapanga dzimbiri: Kusiyana ndi Kugwiritsa Ntchito

2025-04-16

Magiredi 304 ndi 304L zitsulo zosapanga dzimbiri zili pakati pa ma aloyi otchuka kwambiri a austenitic, omwe amalemekezedwa chifukwa chokana dzimbiri komanso kusinthasintha kwawo. Kusankha yoyenera kumatanthauza kumvetsetsa kusiyana kobisika-koma kofunikira-kusiyana kwa chemistry ndi magwiridwe antchito. Bukhuli likutsatira dongosolo lodziwika bwino - kapangidwe kake, mawonekedwe, kuwotcherera, kugwiritsa ntchito, ndi mtengo - pomwe ikupereka malingaliro atsopano okuthandizani kusankha mwanzeru. 304 vs 304L

Mapangidwe a Chemical a 304 ndi 304L Zosapanga zitsulo

304 Chitsulo chosapanga dzimbiri
- Mpweya (C): mpaka 0.08%
- Chromium (Cr): 18–20%
- Nickel (Ni): 8-10.5%
304L Chitsulo chosapanga dzimbiri
- Mpweya (C): mpaka 0.03%
- Chromium (Cr): 18–20%
- Nickel (Ni): 8-12%

Kusiyana kwakukulu ndi kaboni. Ndi carbon yokonzedwa pansi, 304L imakana mapangidwe a chromium carbides pamalire a tirigu panthawi yowotcherera, kuteteza kukana kwake ku dzimbiri. (Ganizirani za 304 monga omanga thupi-wowonjezera pa carbon-pamene 304L ndi mphunzitsi wa yoga, wokhazikika komanso wosinthika m'madera omwe akukhudzidwa ndi kutentha.)

Kuyerekeza Katundu Wakuthupi ndi Wamakina

Katundu	304	304l pa	Tanthauzo Lake
Mphamvu ya Tensile (MPa)	~ 520-750	~ 485-690	304 imakoka movutikira, koma zonse zimaposa zosowa zambiri
Mphamvu zokolola (MPa)	~ 205-215	~ 170-200	M'mphepete pang'ono kufika pa 304 pazogwiritsa ntchito zonyamula katundu
Elongation (%)	≥ 40	≥ 40	Kutambasulidwa kwabwino mu zonse ziwiri zopanga zovuta
Kuuma (Brinell)	~ 70-90	~ 65-85	Zofanana ndi zomwe zimagwiritsidwa ntchito
Kukaniza kwa Corrosion	Zabwino kwambiri (malo onse)	Zabwino kwambiri pazigawo zowotcherera	304L imawala pambuyo powotcherera popanda kutentha kowonjezera

Weldability ndi Kupanga

Weldability
Ma aloyi onse amawotcherera mosavuta ndi njira wamba. Komabe, zopakapaka za 304L zokhala ndi mpweya wochepa zimatanthawuza kuti nthawi zambiri mutha kudumpha zowotcherera pambuyo powotcherera - kupulumutsa nthawi ndi mphamvu.

Kuthekera
Zitsulo zosapanga dzimbiri za Austenitic zimakonda kugwira ntchito molimba. Kuti muthane ndi macheza komanso kuvala zida zanthawi yake, gwiritsani ntchito nsonga zakuthwa, ma feed apakati, ndi mafuta okwanira. 304L yofewa pang'ono imatha kupereka kutha kosalala pansi pamikhalidwe yofanana.

Mapulogalamu a 304 ndi 304L Stainless Steels

304 Chitsulo chosapanga dzimbiri

Masinki akukhitchini amalonda, zophikira, ndi zida zogulitsira zakudya
Zokongoletsera zomanga (mwachitsanzo, njanji, zokutira)
Zombo zosungirako ndi matanki oponderezedwa ndi kutentha pang'ono

304L Chitsulo chosapanga dzimbiri

Kukonzekera kwa Chemical ndi mapaipi a petrochemical (ma weld seams ambiri)
Zosinthira kutentha ndi ma condensers (critical weld integrity)
Matanki amakampani opanga mankhwala ndi mkaka (kukonzanso ma weld pafupipafupi)

Mtengo ndi Kupezeka

Mtengo
Yembekezerani kuti 304L ikhale ndi mtengo wocheperako - womwe nthawi zambiri umakwera 3-7% - kuwonetsa phindu lake la mpweya wochepa m'misonkhano yowotcherera. Pazinthu zazikulu, kusiyana kumeneku kungathe kuwonjezera, choncho ganizirani mu bajeti yanu.

Kupezeka
Makalasi onse awiriwa ndi ofunika kwambiri pazitsulo zoperekera zitsulo: mapepala, mbale, mipiringidzo, machubu, ndi zina zambiri mumiyeso yambiri. Nthawi zotsogola zokhazikika ndi zazifupi, koma zamitundu yapadera kapena zigawo zokhuthala, konzani pasadakhale.

Mapeto

Magiredi 304 ndi 304L amagawana msana wofanana wa kukana kwa dzimbiri komanso mawonekedwe ake. Lingaliro lanu limadalira zofuna zowotcherera ndi momwe mungagwirire ntchito: sankhani 304L mukamachepetsa kutentha kwa pambuyo pa weld ndikukulitsa kukana kwa dzimbiri la weld-zone ndizofunika kwambiri; sankhani 304 ngati mukufuna mphamvu zochulukirapo pazolinga zonse. Ndi matekinoloje ophatikizana olumikizana ndi ma drive okhazikika, ma alloys onse azikhalabe ogwirira ntchito m'mafakitale ambiri kwazaka zikubwerazi.