Umgangatho we-A335 (I-ASTM A335/ASME S-A335) yinkcazo yamazwe ngamazwe yemibhobho yentsimbi engenamthungo yentsimbi ye-ferritic alloy esetyenziswa kwiindawo ezinobushushu obuphezulu kunye noxinzelelo oluphezulu. Isetyenziswa kakhulu kwi-petrochemical, amandla (amandla obushushu/enyukliya), i-boiler kunye namashishini okucoca. Imibhobho yentsimbi ephantsi kwalo mgangatho inamandla aphezulu obushushu obuphezulu, ukumelana nokuqhekeka kunye nokumelana nokugqwala, kwaye ifanelekile kwiimeko zokusebenza ezinzima.
Izixhobo eziqhelekileyo kunye nokwakheka kweekhemikhali zomgangatho we-A335
Izinto ze-A335 zahlulwe ngamanani "P", kwaye amanqanaba ahlukeneyo afanelekile kumaqondo obushushu ahlukeneyo kunye neendawo ezingcolisayo:
| Ibanga | Izinto eziphambili zeekhemikhali | Iimpawu | Ubushushu obusebenzayo |
| A335 P5 | I-Cr 4-6%, Mo 0.45-0.65% | Ayimelani nokugqwala kwesalfure kwaye iyarhubuluza kumaqondo obushushu aphakathi | ≤650°C |
| A335 P9 | I-Cr 8-10%, Mo 0.9-1.1% | Inokumelana ne-oxidation kumaqondo obushushu aphezulu kwaye inamandla aphezulu. | ≤650°C |
| A335 P11 | I-Cr 1.0-1.5%, Mo 0.44-0.65% | Ukudityaniswa kakuhle kunye namandla obushushu obuphakathi | ≤550°C |
| A335 P12 | I-Cr 0.8-1.25%, Mo 0.44-0.65% | Ngokufanayo ne-P11, ukhetho olungabizi kakhulu | ≤550°C |
| A335 P22 | Cr 2.0-2.5%, Mo 0.9-1.1% | Ukubola okuchasene nehydrogen, okusetyenziswa kakhulu kwiibhoyila zesikhululo samandla | ≤600°C |
| A335 P91 | I-Cr 8-9.5%, Mo 0.85-1.05% | Amandla aphezulu kakhulu, akhethwayo kwiiyunithi ezibaluleke kakhulu | ≤650°C |
| A335 P92 | P91 + W | Ukumelana nobushushu obuphezulu, okufanelekileyo kwiiyunithi ezibaluleke kakhulu | ≤700°C |
Iimeko zokusetyenziswa kwemibhobho yentsimbi ye-A335
1. Ishishini lePetrochemical
I-A335 P5/P9: iiyunithi zokuqhekeka kwe-catalytic kwiindawo zokucocisa, imibhobho equlethe isulfure enobushushu obuphezulu.
A335 P11/P12: izitshintshi zobushushu, imibhobho yokudlulisa umphunga kubushushu obuphakathi.
2. Ishishini lamandla (amandla obushushu/amandla enyukliya)
A335 P22: Iipayipi eziphambili zomphunga kunye neentloko zezityalo zamandla obushushu zemveli.
A335 P91/P92: Iiyunithi ezibaluleke kakhulu/ezibaluleke kakhulu, imibhobho yoxinzelelo oluphezulu lwamandla enyukliya.
3. Iibhoyila kunye neenqanawa zoxinzelelo
A335 P91: Izixhobo zobushushu obuphezulu zeebhoyila zanamhlanje ezisebenzayo kakhulu.
A335 P92: Iipayipi ezimelana nobushushu obuphezulu zeebhoyila ezineeparameter eziphezulu.
Ungayikhetha njani into efanelekileyo ye-A335? Iimfuno zobushushu:
Iimfuno zobushushu:
≤550°C: P11/P12
≤650°C: P5/P9/P22/P91
≤700°C: P92
Imeko-bume eyonakalisayo:
Isixhobo esiqulathe isalfure → P5/P9
Indawo egqwalisayo yehydrogen → P22/P91
Ixabiso kunye namandla:
Ukhetho olungabizi kakhulu → P11/P12
Iimfuno zamandla aphezulu → P91/P92
Imigangatho elinganayo yamazwe ngamazwe yemibhobho yentsimbi ye-A335
| A335 | (EN) | (JIS) |
| P11 | 13CrMo4-5 | I-STPA23 |
| P22 | 10CrMo9-10 | I-STPA24 |
| I-P91 | X10CrMoVNb9-1 | I-STPA26 |
FAQ
Umbuzo 1: Yintoni umahluko phakathi kwe-A335 P91 kunye ne-P22?
P91: Umxholo ophezulu we-chromium kunye ne-molybdenum, ukumelana okunamandla kokuqhekeka, okufanelekileyo kwiiyunithi ezibaluleke kakhulu.
P22: Ixabiso eliphantsi, elifanelekileyo kwiibhoyila zezityalo zamandla zemveli.
Umbuzo 2: Ngaba umbhobho wentsimbi i-A335 udinga unyango lobushushu?
Ukulungisa + unyango lokulungisa kuyafuneka, kwaye i-P91/P92 ikwafuna ulawulo oluqinileyo lwesantya sokupholisa.
Umbuzo 3: Ngaba i-A335 P92 ingcono kune-P91?
I-P92 inokumelana nobushushu obuphezulu (≤700°C) ngenxa yokubakho kwe-tungsten (W), kodwa ixabiso liphezulu.
Umbhobho wentsimbi engenamthungo we-A335 oqhelekileyo we-alloy sisixhobo esibalulekileyo phantsi kobushushu obuphezulu kunye neemeko zoxinzelelo oluphezulu. Izixhobo ezahlukeneyo (ezifana ne-P5, P9, P11, P22, P91, P92) zifanelekile kwiimeko ezahlukeneyo. Xa ukhetha, kuyimfuneko ukuqwalasela ngokupheleleyo ubushushu, ukubola, amandla kunye neendleko, kwaye ubhekisele kwimigangatho efanayo yamazwe ngamazwe (efana ne-EN, JIS).
Ixesha leposi: Juni-06-2025
