ASTM A350 LF1, LF2 UYE LF3 CARBON/ALLOY STEELS
Hunhu Hwakajairika
Mhando idzi dzesimbi dzinoshandiswa sesimbi dzepaipi uye zvakare mukugadzira maflange akaumbwa. Dzakakodzera kushandiswa kusvika ku –20ºF (LF1,) –50ºF (LF2) uye –150ºF (LF3.)
Kusarudzwa neZviyero
Nha. Mat. | KUBVA | MUNA | AISI |
1.5622 | 14Ni6 | - | A350 |
ONGORORO YEMIKEMIKIRI
LF1:
C% | Mn% | Uye% | S% | P% | Cr% | Mu% |
0.30 yakakwira | 0.6/1.35 | .15/.30 | .040 yepamusoro | .035 yepamusoro | 0.30 yakakwira | 0.40 yakakwira |
LF2:
C% | Mn% | Uye% | S% | P% | Cr% | Mu% |
0.30 yakakwira | 0.6/1.35 | .15/.30 | .040 yepamusoro | .035 yepamusoro | 0.30 yakakwira | 0.40 yakakwira |
LF3:
C% | Mn% | Uye% | S% | P% | Cr% | Mu% |
0.20 yakakwira | 0.90 | .20/.35 | .040 yepamusoro | .035 yepamusoro | 0.30 yakakwira | 3.3/3.7 |
ZVINOSHANDISWA
Simbi idzi dzinonyanya kushandiswa pakugadzira mapaipi uye flange dzakagadzirwa.
Kugadzira
Magiredhi eLF1 neLF2 angave akagadzirwa pa2250-2300ºF (1230-1260ºC) uye hazvigoneke yakagadzirwa pasi pe1650-1700ºF (900-925ºC.) Iyo Gwaro reLF3 rinogadzirwa pa2150-2200ºF (1175-1205ºC) uye hazvigonekeyakagadzirwa pasi pe1700ºF (925ºC.)
Kurapa Kwekushongedza/Kupisa
Kugadziriswa kwesimbi dzepaipi pasina mubvunzo kuchaitwa nguva dzose mushure mekusanganisa. Maumbirwo esimbi idzi achatanga asarudzwa nemaitiro ekumonera/kuumba. Paipi pachayo ichapihwa kubva kusimbi dzinopisa, flanges nezvimwewo kubva pakusanganisa. Maitiro chaiwo ekumonera achave akakosha pakuona kukodzera uye kuchengetedzeka kwepaipi uye mashandiro ayo anotevera. Kugadziriswa kwekupisa uye mushure mekupisa kwakakosha.
Magiredhi matatu akanyorwa pano anogona kusungirirwa nyore nyore nenzira dzese dzakaedzwa uye dzakaedzwa.
KUSHANDISA MACHINABILITY
Kana paine forged fittings uye flanges, magiredhi aya kaniinofanira kugadzirwa nemuchina sezvinodiwa, uye ruzivo rwunoramba ruchienderera mberi ruchaona kana kugadzira kwacho kuri nani pakugadzirwa kwakagadzirwa, chivakwa chakajairika kana chivakwa chakanamirwa. Chero zvazvingava, tichifunga nezvehunhu hwakakosha hwekushandiswa kwekupedzisira, zano rinofanira kutorwa kubva kukambani inozivikanwa yekurapa kupisa..