QN1803 (304D) poleiti ea tšepe e sa hloekang
1. Tlhaloso:
Sehlopha se secha sa sehlahisoa QN1803 ke naetrojene ea pele e phahameng lefatšeng, e hanyetsang kutu e phahameng, sehlahisoa sa tšepe e sa hloekang ea nickel e bolokang nickel.
Motheong oa ho netefatsa hore ho hanyetsa kutu ho lekana le 304 tšepe e sa hloekang, matla a thepa a ntlafatsoa, le thepa.
litšenyehelo li fokotsehile, li etsa hore e be le litšenyehelo tse ngata le tse nang le tlhōlisano 'marakeng ho feta 304 tšepe e sa hloekang.
Likarolo tse ncha tsa tlhahiso ea lihlahisoa tsa lihlahisoa: naetrojene e phahameng (≥2000ppm), chromium e phahameng (≥18%), nickel e bohareng (~ 3.0%) le koporo e phahameng (≥1.5%).
Ka sethala sa dijithale sa R&D sa Thermo-Calc thermodynamic phase diagram calculation software le tlhahlobo ea data ea liteko, ho lokisa
likarolo tsa alloying tsa karolo e 'ngoe le e' ngoe ea karolo ha e ntlafatse feela ho hanyetsa ha kutu ea sehlahisoa, empa hape e etsa matla a tlhahiso ea QN1803.
makhetlo a fetang 1.3 ho feta a 304.
QN1803 e na le lintlha tse latelang:
1) pitting corrosion e lekanang le PREN=Cr+3.3Mo+30N-Mn e ka holimo ho 19.0, e nang le bonyane khanyetso e tšoanang ea pitting corrosion joaloka 304.
ts'epe e sa beng le mabali.
2) ho hanyetsa kutu e ts'oanang ho hlapolla hydrochloric acid, ho hlapolla sulfuric acid, acetic acid + letsoai le libaka tse ling ho molemo ho feta.
304 tšepe e sa hloekang.
3) khanyetso ea kutu e betere ho feta 304 sebakeng sa ts'ebeliso ea 'nete ka mor'a ho kobeha, ho hatakela, boemo bo thata le ho etsa serame se seng.
4) matla a lihlahisoa a feta makhetlo a 1,3 ho feta a 304 tšepe e sa hloekang, 'me e na le bolelele bo seng ka tlase ho 45%. Apara khanyetso le
ts'ebetso ea mokhathala o betere ho feta 304 tšepe e sa hloekang.
5) ts'ebetso e ntle ea tjheseletsa, matla ka mor'a ho cheselletsa a phahame ho feta a tšepe e sa hloekang ea 304, 'me ho hanyetsa kutu ke
e bapisoang le ea 304 steelless steel.
2. Papiso le 304 lintho tse bonahalang:
| Kereiti | Compsition Chemical (Max %) | ||||||||||
| C | Si | Mn | P | S | Cr | Ni | Mo | Cu | N | PREN | |
| 304 | 0.04 | 0.4 | 1.02 | ≤0.035 | 0 | 18.1 | 8.02 | 0.02 | 0.1 | 0.05 | 18.96 |
| QN1803 | 0.07 | 0.41 | 6.32 | ≤0.035 | 0 | 18.2 | 3.03 | 0.12 | 1.62 | 0.24 | 22.43 |
| 1.4376 | ≤0.10 | ≤1.00 | 5.0-8.0 | ≤0.045 | ≤0.015 | 17-20.5 | 2.0-4.5 | / | / | ≤0.30 | / |
3. Papiso ea thepa:
4. Pontšo ea li-coil le palte:
5. Ho romelloa ka literaka:
6. Container Loading:
7. Kopo:
➢Indasteri ea kaho: ho haha marulelo, mabota, li-purlins, likarolo tsa meaho tse jarang meroalo, joalo-joalo.
➢ mamati a thepa le lifesetere: joalo ka li-drain tsa fatše, lihinji, lihinji, liporo tsa litšepe, joalo-joalo;
➢ Lipeipi tse cheselitsoeng ka mekhabiso: joalo ka terata, litšitiso tsa liteishene, litepisi tsa litepisi, lifensetere tsa tšireletso, joalo-joalo;
➢ Lipeipi tse cheselitsoeng indastering: joalo ka lipeipi tsa khase, lipeipi tsa likhoerekhoere tsa indasteri;
➢ Lits'oants'o tsa litanka tsa indasteri: joalo ka lijana tsa reefer, litora tsa desulfurization ea khase;
➢ Thepa ea ho tsoalisa: joalo ka moepo oa ho fepa likolobe, mohope oa masela a mabeli;
➢ Litsi tsa masepala: joalo ka libaka tsa libese, lits'ebeletso tsa likhoerekhoere.
