Kwi-ASTM A213, ukongeza kwiimfuno zeempawu zokuxinana kunye nobunzima, kufuneka ezi mvavanyo zilandelayo: Uvavanyo lokuThabatha kunye novavanyo lokugoba.
I-ASTM A335 P22(ASME SA335 P22) ngumbhobho wentsimbi ye-chromium-molybdenum alloy osebenza ngobushushu obuphezulu, osetyenziswa kakhulu kwiiibhoyila, ii-superheaters, kunye nobushushuabatshintshi bemali.
Iqulethe i-1.90%ukuya kwi-2.60% ye-chromium kunye ne-0.87% ukuya kwi-1.13% ye-molybdenum, inokumelana okuhle kakhulu nobushushu, kwaye ikwafanelekile kwimisebenzi yokugoba, yokuflanga, okanye efanayo yokwenza.
Inombolo ye-UNS: K21590.
I-ASTM A335 yinkcazo eqhelekileyo yeepayipi ze-ferritic alloy-steel ezingenamthungo ezenzelwe inkonzo yobushushu obuphezulu. Isetyenziswa kakhulu kwiibhoyila, ii-superheaters, ii-heat exchangers, kunye nezinye izicelo ezisebenza phantsi kweemeko zobushushu obuphezulu kunye noxinzelelo oluphezulu. Ukongeza kwiGrade P22, ezinye iiklasi ze-alloy eziqhelekileyo ziqukaI-P5 (UNS K41545), I-P9 (UNS K90941), P11 (UNS K11597)kunyeI-P91 (UNS P90901).
Umenzi kunye neMeko
Imibhobho yentsimbi ye-ASTM A335 P22 mayiyenziwe ngenkqubo engenamthungo kwaye mayigqitywe ngobushushu okanye itsalwe kubanda xa igqityiwe.
Imibhobho yentsimbi engenamthungoziipayipi ezingenazo ii-welds, ezibonelela iipayipi zentsimbi ze-P22 ngozinzo oluphezulu kunye nokuthembeka kwiindawo ezinobushushu obuphezulu kunye noxinzelelo oluphezulu.
Unyango lobushushu
Imibhobho yentsimbi ye-P22 kufuneka ifudunyezwe kwaye iphathwe ngobushushu ngokufutha ngokupheleleyo, ukufutha okungabonakaliyo, okanye ngokulungisa nokulungisa.
| Ibanga | Uhlobo lokunyanga ubushushu | Ubushushu okanye i-Subcritical Annealing |
| I-ASTM A335 P22 | i-anneal epheleleyo okanye engathathi hlangothi | — |
| ukwenza izinto zibe zesiqhelo kunye nobushushu | 1250 ℉ [675 ℃] umzuzu |
I-Chromium (Cr) kunye ne-molybdenum (Mo) zizinto ezibalulekileyo zokudibanisa kwintsimbi ye-P22, ziphucula amandla obushushu obuphezulu, ukumelana ne-oxidation, kunye nokuqina. Ulwakhiwo oluthile lweekhemikhali luboniswe ngezantsi:
| Ibanga | Ulwakhiwo, % | ||||||
| C | Mn | P | S | Si | Cr | Mo | |
| P22 | 0.05 ~ 0.15 | 0.30 ~ 0.60 | Ubuninzi obuyi-0.025 | Ubuninzi obuyi-0.025 | Ubuninzi obuyi-0.50 | 1.90 ~ 2.60 | 0.87 ~ 1.13 |
Uvavanyo lweempawu zoomatshini ze-P22 kufuneka lwenziwe ngokuhambelana neemfuno ezifanelekileyo ze-ASTM A999.
Iipropati zokuThatha
| Ibanga | I-ASTM A335 P22 | |
| Amandla okutyhafa, umzuzu | 60 ksi [415 MPa] | |
| Amandla okuvelisa, umzuzu | 30 ksi [205 MPa] | |
| Ukwandiswa kwe-2 in. okanye i-50 mm (okanye i-4D), min | I-Longitudinal | I-Transverse |
| Ukwandiswa okusisiseko kodonga oluyi-5/16 intshi [8 mm] nangaphezulu ngobukhulu, iimvavanyo ze-strip, kunye nazo zonke iisayizi ezincinci ezivavanyiweyo kwicandelo elipheleleyo | 30% | 20% |
| Xa kusetyenziswa isampuli eqhelekileyo ejikelezileyo enobude obuziisentimitha ezi-2 okanye ezingama-50 okanye ubungakanani obuncinci ngokulinganiselayo enobude obuziisentimitha ezi-4 (ubude obuphindwe kane kunobubanzi) | 22% | 14% |
| Kwiimvavanyo ze-strip, kufuneka kuncitshiswe ukwehla ngakunye kwe-1/32 kwi-[0.8 mm] kobukhulu bodonga obungaphantsi kwe-1/32 in. [8 mm] ukusuka ekunyuseni okusisiseko kwamanqaku alandelayo epesenti. | 1.50% | 1.00% |
Iipropati zoBulukhuni
Umgangatho we-ASTM A335 awuchazi iimfuno ezithile zobulukhuni kwiipayipi zentsimbi ze-P22.
Ezinye Izinto zoVavanyo
Ukunyamezelana kobubanzi
Kwimibhobho e-odolwe yi-NPS [DN] okanye ububanzi bangaphandle, utshintsho kububanzi bangaphandle aluyi kudlula iimfuno eziboniswe kwitheyibhile engezantsi:
| Umyili we-NPS [DN] | Iinguqu Ezivumelekileyo | |
| ngaphakathi. | mm | |
| I-intshi eyi-1/8 ukuya kwi-1 1/2 [6 ukuya kwi-40]. | ±1/64 [0.015] | ± 0.40 |
| Ngaphezulu kwe-1 1/2 ukuya kwi-4 [40 ukuya kwi-100], intshi. | ±1/32 [0.031] | ± 0.79 |
| Ngaphezulu kwe-4 ukuya kwi-8 [100 ukuya kwi-200], intshi. | -1/32 - +1/16 [-0.031 - +0.062] | -0.79 - +1.59 |
| Ngaphezulu kwe-8 ukuya kwi-12 [200 ukuya kwi-300], intshi. | -1/32 - +3/32 [-0.031 - 0.093] | -0.79 - +2.38 |
| Ngaphezulu kwe-12 [300] | ±1 % yobubanzi obungaphandle obuchaziweyo | |
Kwimibhobho ecwangciswe ngobubanzi obungaphakathi, ububanzi obungaphakathi abuyi kwahluka ngaphezu kwe-1% ukusuka kububanzi obungaphakathi obuchaziweyo.
Ukunyamezelana koBungqingqwa bodonga
Ukongeza kumda ongacacanga wobukhulu bodonga lombhobho obubekwe ngumda wobunzima kwi-ASTM A999, ubukhulu bodonga lombhobho nangaliphi na ixesha buya kuba ngaphakathi kokunyamezelana okuchazwe kwitheyibhile engezantsi:
| Umyili we-NPS [DN] | Ukunyamezelana |
| 1/8 ukuya ku-2 1/2 [6 ukuya ku-65] kubandakanya zonke iireyithi ze-t/D | -12.5 % ~ +20.0 % |
| Ngaphezulu kwe-2 1/2 [65], t/D ≤ 5% | -12.5 % ~ +22.5 % |
| Ngaphezulu kwe-2 1/2, t/D ＞ 5% | -12.5 % ~ +15.0 % |
| I-ASME | I-ASTM | EN | I-DIN | I-JIS |
| I-ASME SA335 P22 | I-ASTM A213 T22 | I-DIN 10216-2 10CrMo9-10 | I-DIN 17175 10CrMo9-10 | I-JIS G 3458 STPA25 |
Izixhobo:imibhobho yentsimbi engenamthungo ye-ASTM A335 P22 kunye nezixhobo;
Ubungakanani:1/8" ukuya kuma-24", okanye wenze ngokwezifiso ngokweemfuno zakho;
Ubude:Ubude obungacwangciswanga okanye obunqunyiweyo ngokwe-odolo;
Ukupakisha:Umbala omnyama, iziphelo ezibengezelayo, izikhuseli zemibhobho, iikreyithi zomthi, njl.njl.
Inkxaso:Isatifikethi se-IBR, ukuhlolwa kwe-TPI, i-MTC, ukusika, ukucubungula, kunye nokwenza ngokwezifiso;
I-MOQ:1 m;
Immimiselo yokuhlawula:I-T/T okanye i-L/C;
Ixabiso:Nxibelelana nathi ukuze ufumane amaxabiso amva nje eepayipi zentsimbi ze-T11;
