Amashubhu e-ASTM A334 amashubhu ensimbi ekhabhoni nengxubevange aklanyelwe izinhlelo zokusebenza ezisezingeni eliphansi futhi akhiqizwa kusetshenziswa izinqubo ezingenamthungo nezishiselwe.
Abanye osayizi bomkhiqizo bangase bangatholakali ngaphansi kwalokhu kucaciswa ngoba ubukhulu bodonga olusindayo bunomthelela ongemuhle ezicini ezithinta izinga lokushisa eliphansi.
Ukuhlukaniswa Kwebanga
I-ASTM A334 iqukethe amamaki amaningana ezindawo ezihlukene ezinezinga lokushisa eliphansi.
Grade 1, Grade 3, Grade 6, Grade 7, Grade 8, Grade 9, Grade 11.
Amabanga wecarbon steel pipekukhonaIbanga loku-1futhiIbanga lesi-6.
Amabanga ahambisanayo wei-alloy steel tubes yiBanga lesi-3, iBanga lesi-7, iBanga lesi-8, iBanga lesi-9, neBanga le-11..
Ibanga ngalinye lensimbi linokwakheka kwamakhemikhali alo okukhethekile kanye nezidingo zezakhiwo eziwumshini, kanye nemibandela yokuhlola umthelela encane yokuhlolwa okufanele kuhlangatshezwane nayo.
Izinqubo Zokukhiqiza
Amashubhu azokwenziwa yi-engenamthungonoma okuzenzakalelayoinqubo Weldingngaphandle kokwengezwa kwensimbi yokugcwalisa emsebenzini wokushisela.
Ukwelashwa Kokushisa
IBanga 1, 3, 6, 7, kanye nele-9
Zijwayeze ngokufudumeza izinga lokushisa elifanayo elingekho ngaphansi kuka-1550 °F [845 °C] futhi uphole emoyeni noma ekamelweni lokupholisa lesithando somlilo esilawulwa umoya.
Uma ukuthukuthela kuyadingeka, kuzodinga ukuxoxisana.
Okwamamaki angenhla amashubhu ensimbi angenamthungo kuphela:
Shisisa futhi ulawule ukusebenza okushisayo kanye nezinga lokushisa lokuqeda ukushisa liye ezingeni lokushisa eliqedayo ukusuka ku-1550 - 1750 °F [845 - 955℃] bese upholisa esithandweni somoya esilawulwayo kusukela ekushiseni kokuqala okungengaphansi kuka-1550 °F [ 845 °C].
Ibanga lesi-8
Khetha noma iyiphi kulezi zindlela ezilandelayo zokwelapha ukushisa.
Ihlutshiwe futhi ipholile;
I-Double Normalized and Tempered.
Ibanga le-11
Ukuthi kusetshenziswe amashubhu eBanga 11 ngokwesivumelwano phakathi komthengi nomphakeli.
Uma amashubhu eBanga le-11 ekhishwa azokwenziwa abejwayelekile ebangeni elingu-1400 - 1600℉[760 - 870 °C].
I-ASTM A334 Chemical Composition
Ezinsimbi zeBanga 1 noma zeBanga lesi-6, akuvunyelwe ukunikeza amamaki e-alloying kunoma yiziphi izici ngaphandle kwalezo ezidingekayo ngokucacile.Nokho, kuvunyelwe ukwengeza izakhi ezidingekayo ukuze i-deoxidation yensimbi.
I-ASTM A334 Mechanical Tests
Izidingo zezakhiwo zikagesi azisebenzi kumashubhu amancane kuno-1/8 in. [3.2 mm] ububanzi obungaphandle futhi anogqinsi olungaphansi kuka-0.015 in. [0.4 mm].
1. Impahla Eqinile
Ubude obuncane bubalwe ngokuncipha ngakunye kwe-intshi engu-1/32 [0.80 mm] ebugqilini bodonga:
Emashubhuni amancane kuno-1/2 in. [12.7 mm] ububanzi obungaphandle, amanani obude anikezwe amasampula emigqa azosebenza.
2. Izivivinyo Zomthelela
Khetha izinga lokushisa elifanele namandla omthelela ahambisanayo ngokusekelwe ebangeni nokuqina kodonga.
Amandla Omthelela
I-Impact Temperature
| Ibanga | I-Impact Test Temperature | |
| ℉ | ℃ | |
| Ibanga loku-1 | -50 | -45 |
| Ibanga lesi-3 | -150 | -100 |
| Ibanga lesi-6 | -50 | -45 |
| Ibanga lesi-7 | -100 | -75 |
| Ibanga lesi-8 | -320 | -195 |
| Ibanga lesi-9 | -100 | -75 |
3. Ukuhlolwa kokuqina
| Ibanga | Rockwell | Brinell |
| Ibanga loku-1 | B85 | 163 |
| Ibanga lesi-3 | B90 | 190 |
| Ibanga lesi-6 | B90 | 190 |
| Ibanga lesi-7 | B90 | 190 |
| Ibanga lesi-8 | - | - |
| Ibanga le-11 | B90 | 190 |
4. Ukuhlolwa Kokucaba
Ukuhlolwa kokucaba okukodwa kuzokwenziwa kuma-specimens kusukela ekugcineni kweshubhu eyodwa eqediwe yenkatho ngayinye kodwa hhayi leyo esetshenziselwa ukuhlolwa kwe-flare noma i-flange.
5. Ukuhlola Ukuvuleka (Amashubhu Angenamthungo)
Ukuhlolwa kwe-flare okukodwa kuzokwenziwa kuma-specimens kusukela ekugcineni kweshubhu eyodwa eqediwe yendawo ngayinye, kodwa hhayi lelo elisetshenziselwa ukuhlolwa kokucaba.
6. Ukuhlolwa kwe-Flange (Amashubhu ashiselwe)
Ukuhlolwa kwe-flange okukodwa kuzokwenziwa kuma-specimens kusukela ekugcineni kweshubhu eyodwa eqediwe yenkatho ngayinye, kodwa hhayi leyo esetshenziselwa ukuhlolwa kokucaba.
7. Reverse Flattening Test
Kumashubhu ashiselwe, ukuhlolwa okukodwa kokwenza isicaba kuzokwenziwa esibonelweni esivela ku-1500 ft [460 m] ngamunye wamashubhu aqediwe.
I-Hydrostatic noma i-Nondestructive Electric Test
Ipayipi ngalinye kufanele lihlolwe ngogesi ngendlela engonakalisi noma lihlolwe ngamanzi ngokuhambisana ne-Specification A1016/A1016M.
Izicelo ze-ASTM A334 Steel Pipe
Isetshenziselwa kakhulu ukuthutha uketshezi noma amagesi afana negesi yemvelo, uwoyela, namanye amakhemikhali emazingeni okushisa aphansi.
1. Amasistimu wamapayipi e-Cryogenic: evame ukusetshenziswa ekwakhiweni kwamapayipi amapayipi okuthutha uketshezi lwe-cryogenic (isb. igesi yemvelo ewuketshezi, i-nitrogen enguketshezi).Ngenxa yezakhiwo zayo ezinhle kakhulu ze-cryogenic, iyakwazi ukugcina amandla emishini kanye nokuqina emazingeni okushisa aphansi kakhulu.
2. Izishintshi zokushisa nama-condenser: Izishintshisi zokushisa nama-condensers zingasetshenziswa ngempumelelo ukupholisa noma ukushisa imidiya yenqubo, ikakhulukazi ezimbonini zamakhemikhali ne-petrochemical.
3. Imikhumbi yokucindezela: ingase isetshenziselwe futhi ukwenza imikhumbi yokucindezela eyenzelwe imisebenzi ye-cryogenic.Le mikhumbi ingase isetshenziselwe ukugcina amakhemikhali e-cryogenic noma izinqubo ezikhethekile zezimboni.
4. Izinhlelo zokuqandisa kanye nemishini: Lawa mashubhu asetshenziselwa ukuthuthwa kweziqandisi, ikakhulukazi lapho kudingeka khona izinto ezimelana nokushisa okuphansi.
I-ASTM A334 Equivalent Standard
I-EN 10216-4: Imboza amashubhu ensimbi angenalo i-alloyed ne-alloyed, acacise izakhiwo ezisezingeni eliphansi lokushisa.
I-JIS G 3460: ihlobene namashubhu ensimbi engxubevange yenkonzo ye-cryogenic.
I-GB/T 18984: kusebenza kumashubhu ensimbi angenamthungo wemikhumbi ye-cryogenic pressure.Icacisa ngokuningiliziwe ukuklanywa kanye nokukhiqizwa kwamashubhu ensimbi afanelekela izindawo ezinezinga lokushisa eliphansi ngokwedlulele.
Nakuba lezi zindinganiso zingase zihluke ngemininingwane kanye nezidingo ezithile, zifana nenhloso yazo yonke kanye nesicelo, okuwukuqinisekisa ukuphepha nokusebenza kwamapayipi ensimbi ezindaweni ze-cryogenic.
Imikhiqizo Yethu Ehlobene
Kusukela yasungulwa ngo-2014, i-Botop Steel isiphenduke umhlinzeki oholayo wepayipi lensimbi eNyakatho neChina, elaziwa ngomsebenzi omuhle kakhulu, imikhiqizo yekhwalithi ephezulu, nezisombululo ezibanzi.
Le nkampani inikeza izinhlobonhlobo zamapayipi ensimbi ye-carbon nemikhiqizo ehlobene, okuhlanganisa ipayipi lensimbi engenamthungo, i-ERW, i-LSAW, ne-SSAW, kanye nohlu oluphelele lokufakwa kwamapayipi nama-flange.Imikhiqizo yayo ekhethekile ihlanganisa ama-alloys asezingeni eliphezulu kanye nezinsimbi ezingenasici ze-austenitic, ezenzelwe ukuhlangabezana nezidingo zamaphrojekthi ahlukahlukene wamapayipi.
Tags: ASTM A334, carbon steel pipe, astm a334 gr 6, astm a334 gr 1.
Isikhathi sokuthumela: May-20-2024