ASTM-335 uyeSA-355MMamiriro Akajairwa eSeamless Ferritic Alloy-Steel Pipe yeHigh-Temperature Service.
NdeyeBoiler uye Pressure Vessel Code.
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Fomu rekuraira rinofanira kusanganisira zvinotevera 11 zvinhu:
1. Huwandu (tsoka, mamita kana nhamba yetsvimbo)
2. Zita rekushandisa (seamless alloy simbi nezita pombi)
3. Matanho (16 pamwe chete: P1, P2, P22, P11, P22, P91)
4. Manufacturing nzira (kupedza kupisa kana kutonhora kudhirowa)
5. Shandisa imwe yezvinotevera zvinotsanangurwa: 1), NPS uye pombi madziro ukobvu serial nhamba, 2), kunze dhayamita uye zita remadziro ukobvu, 3), kunze dhayamita uye kushoma kwemadziro ukobvu, 4), dhayamita yemukati uye nemazita emadziro ukobvu , 5), dhayamita yemukati uye shoma madziro ukobvu kurongeka mirairo
6. Kureba (yakakamurwa kuita hurefu hwakatarwa uye hurefu husingaverengeki)
7. Kugumisa kugadzirisa.
8. Zvido zvekusarudza (kumanikidza kwemvura uye kutenderwa uremu kutsauka).
9. Inodiwa bvunzo mishumo (ona A530).
10. Nhamba yakajairwa. 11Special zvinodiwa kana chero sarudzo yekuwedzera zvinodiwa.
Zvinhu uye kugadzira
1. Nominal simbi mapaipi anogona kupisa-kupedzwa kana kutonhora-kudhonzwa, uye vakapedza kupisa kwekupedzisira kurapwa kunodiwa nechiyero.
2. P2 uye P12 giredhi simbi. Aya magiredhi maviri esimbi anofanirwa kugadzirwa uchishandisa coarse zviyo zvekunyunguduka. Kana pane zvakakosha zvinodiwa pakukura kwezviyo kana deoxidation process, zvinofanirwa kubvumirana nemutengi nemugadziri wesimbi.
3. Kurapa kwekupisa
1. Kunze kwePSC, P23, P91, P92, P122 uye P911 giredhi simbi uye sezvakatsanangurwa, magiredhi ese emapombi ezita achapiswazve uye kupihwa mune yakazara annealed, isothermal annealed kana normalized uye ine hasha. Kana ikapihwa mune yakajairika uye yakadzikama, tembiricha yepasi peP5, P5B, P9, P21 uye P22 giredhi simbi ichave 675°C. Tembiricha shoma yekupisa yeP1, P2, P11, P12 uye P15 giredhi simbi inofanira kunge iri 650 ℃.
2. Kupisa kwekupedzisira kurapwa kweP92 uye P911 giredhi simbi kunofanira kunge kuri normalizing pane zvishoma 1040 ℃ uye kunyorovesa pane zvishoma 730 ℃.