Iityhubhu ze-ASTM A334 zityhubhu zentsimbi zekhabhoni kunye ne-alloy eyenzelwe ubushushu obuphantsi kwaye yenziwe kusetyenziswa iinkqubo ezingenamthungo kunye ne-welded.
Obunye ubungakanani bemveliso busenokungafumaneki phantsi kolu balulo ngenxa yokuba ubukhulu bodonga olunzima bunesiphumo esibi kwiipropati ezinempembelelo zobushushu obuphantsi.
Ukuhlelwa kweBanga
I-ASTM A334 iqulathe amabanga amaninzi eendawo ezahlukeneyo zobushushu obuphantsi.
IBakala 1, iBakala 3, iBakala 6, iBakala 7, iBakala 8, iBakala 9, neBakala 11.
Amabanga eumbhobho wentsimbi yekhabhoniziIBanga loku-1kwayeIBanga lesi-6.
Amabanga ahambelanayo weI-alloy steel tubes yiBanga lesi-3, iBanga lesi-7, iBanga lesi-8, iBanga lesi-9 kunye neBanga le-11..
Ibakala ngalinye lentsimbi linemichiza yalo ethile kunye neemfuno zepropathi zoomatshini, kunye nemilinganiselo yobushushu obuphantsi bempembelelo ekufuneka ihlangatyezwe.
Iinkqubo Zokuvelisa
Iityhubhu ziya kwenziwa yiengenamthungookanye ngokuzenzekelayoinkqubo weldingkungabikho kongezwa kwentsimbi yokuzalisa kwi-welding operation.
Unyango lobushushu
IBanga 1, 3, 6, 7, kunye nele-9
Ziqhelanise ngokufudumeza kubushushu obufanayo obungekho ngaphantsi kwe-1550 °F [845 °C] kwaye uphole emoyeni okanye kwigumbi lokupholisa leziko elilawulwa ngumoya.
Ukuba ukucaphuka kuyafuneka, kuya kufuneka kuxoxwe.
Kula mabanga angasentla eityhubhu zentsimbi ezingenamthungo kuphela:
Phinda ufudumeze kwaye ulawule ukusebenza okushushu kunye nobushushu bomsebenzi wokugqiba ukutshisa ukuya kuluhlu lobushushu bokugqiba ukusuka kwi-1550 - 1750 °F [845 - 955℃] kwaye uphole kwisithando somlilo esilawulwayo ukusuka kubushushu bokuqala obungekho ngaphantsi kwe-1550 °F [ 845 °C].
IBanga lesi-8
Khetha nayiphi na kwezi ndlela zilandelayo zonyango lobushushu.
Ucimile kwaye Unomsindo;
Iphindwe kabini iQhelekileyo kwaye inomsindo.
IBanga le-11
Ukuba ngaba kufakwe iityhubhu zeBakala 11 ngokwesivumelwano phakathi komthengi nomthengisi.
Xa iityhubhu zeBanga le-11 zikhutshwa ziya kwenziwa ziqheleke kuluhlu lwe-1400 - 1600℉[760 - 870 °C].
I-ASTM A334 Ukwakheka kweMichiza
KwiBanga loku-1 okanye iBanga lesi-6, akuvumelekanga ukubonelela ngamabakala aloyiyo kuzo naziphi na izinto ngaphandle kwezo zifunekayo ngokucacileyo.Nangona kunjalo, kuvunyelwe ukongeza izinto eziyimfuneko kwi-deoxidation yensimbi.
Iimvavanyo zoomatshini ze-ASTM A334
Iimfuno zepropathi yoomatshini azisebenzi kwityhubhu encinci kune-1/8 in. [3.2 mm] ngaphandle kwedayamitha kunye nobukhulu bodonga obungaphantsi kwe-0.015 [0.4 mm].
1. Ipropathi yeTensile
Ubuncinane bobude obaliweyo kwi-intshi nganye eyi-1/32 [0.80 mm] yokuncipha kobunzima bodonga:
Kwityhubhu encinci kune-1/2 in. [12.7 mm] ngaphandle kwedayamitha, amaxabiso obude anikezelweyo kwisampulu yomcu aya kusebenza.
2. Iimvavanyo zempembelelo
Khetha ubushushu obufanelekileyo kunye namandla empembelelo ahambelanayo ngokusekwe kwibakala kunye nobukhulu bodonga.
Amandla empembelelo
Ubushushu beMpembelelo
| IBanga | Ubushushu bovavanyo lweMpembelelo | |
| ℉ | ℃ | |
| 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. Uvavanyo lokuqina
| IBanga | Rockwell | Brinell |
| IBanga loku-1 | B 85 | 163 |
| IBanga lesi-3 | B 90 | 190 |
| IBanga lesi-6 | B 90 | 190 |
| IBanga lesi-7 | B 90 | 190 |
| IBanga lesi-8 | - | - |
| IBanga le-11 | B 90 | 190 |
4. Uvavanyo lokucaba
Uvavanyo olunye lokucaba luya kwenziwa kwisampulu nganye ekupheleni kwetyhubhu enye egqityiweyo kwiqashiso nganye kodwa ingelulo olusetyenziselwa uvavanyo lomlilo okanye i-flange.
5. Uvavanyo lokudangala (iMibhobho engenamthungo)
Uvavanyo olunye lweflare luya kwenziwa kwisampulu nganye ekupheleni kwetyhubhu enye egqityiweyo kwiqashiso nganye, kodwa hayi leyo isetyenziselwa uvavanyo lokucaba.
6. Uvavanyo lweFlange (iMibhobho eWelded)
Uvavanyo olunye lweflange luya kwenziwa kwisampulu ukusuka ekupheleni kwetyhubhu enye egqityiweyo kwiqashiso nganye, kodwa hayi leyo isetyenziselwa uvavanyo lokucaba.
7. UVavanyo lweReverse Flattening
Kwimibhobho edityanisiweyo, uvavanyo olunye lokubuyisela umva umcaba luyakwenziwa kumzekelo osuka kwi-1500 ft [460 m] nganye yetyhubhu egqityiweyo.
Uvavanyo loMbane lweHydrostatic okanye olungonakaliyo
Umbhobho ngamnye uya kuvavanywa ngokungenakonakala ngombane okanye uvavanywe ngokwasemanzini ngokweNgcaciso ye-A1016/A1016M.
Izicelo ze-ASTM A334 Ipayipi yentsimbi
Ngokuyintloko isetyenziselwa ukuthutha ulwelo okanye iigesi ezifana nerhasi yendalo, ioyile, kunye nezinye iikhemikhali kumaqondo obushushu aphantsi.
1. Iinkqubo zemibhobho yeCryogenic: edla ngokusetyenziswa kulwakhiwo lwezixokelelwano zemibhobho yokuthutha ulwelo lwe-cryogenic (umz. igesi yendalo engamanzi, initrogen engamanzi).Ngenxa yeempawu zayo ezintle ze-cryogenic, iyakwazi ukugcina amandla omatshini kunye nokuqina kumaqondo aphantsi kakhulu.
2. Izitshintshi zobushushu kunye ne-condensers: Abatshintshi be-Heat kunye ne-condensers bangasetyenziselwa ngokufanelekileyo ukupholisa okanye ukufudumeza imidiya yenkqubo, ngakumbi kwiikhemikhali kunye ne-petrochemical industries.
3. Iinqanawa zoxinzelelo: ingasetyenziselwa ukwenza iinqanawa zoxinzelelo ezenzelwe imisebenzi ye-cryogenic.Ezi nqanawa zingasetyenziselwa ukugcina imichiza ye-cryogenic okanye iinkqubo ezikhethekileyo zoshishino.
4. Iinkqubo zefriji kunye nezixhobo: Le mibhobho isetyenziselwa ukuthuthwa kweefriji, ngakumbi apho kufuneka izinto eziphantsi kweqondo lokushisa.
Umgangatho olinganayo we-ASTM A334
EN 10216-4: Igubungela iibhubhu zetsimbi ezingenalo i-alloyed kunye ne-alloyed, ezichaze iimpawu ezisezantsi zokushisa.
JIS G 3460: inxulumene neetyhubhu zentsimbi yealloyi yenkonzo ye-cryogenic.
GB/T 18984: isebenza kwiityhubhu zentsimbi ezingenamthungo kwiinqanawa zoxinzelelo lwe-cryogenic.Icacisa ngokweenkcukacha ukuyila kunye nokuveliswa kweetyhubhu zetsimbi ezifanelekileyo kwiindawo eziphantsi kakhulu zobushushu.
Nangona le migangatho inokuthi ihluke kwiinkcukacha kunye neemfuno ezithile, zifana nenjongo yazo yonke kunye nesicelo, oko kukuqinisekisa ukhuseleko kunye nokusebenza kwemibhobho yensimbi kwiindawo ze-cryogenic.
Iimveliso zethu ezinxulumeneyo
Ukususela ekusekweni kwayo kwi-2014, i-Botop Steel iye yaba ngumthengisi ohamba phambili we-carbon steel pipe eNyakatho ye-China, eyaziwa ngenkonzo egqwesileyo, iimveliso eziphezulu, kunye nezisombululo ezibanzi.
Inkampani inikezela ngeendidi zemibhobho ye-carbon steel kunye nemveliso ehambelana nayo, kubandakanywa i-seamless, i-ERW, i-LSAW, kunye ne-SSAW ipayipi yensimbi, kunye nomgca opheleleyo wokufakelwa kwemibhobho kunye neeflange.Iimveliso zayo ezikhethekileyo zikwabandakanya i-alloys ephezulu kunye ne-austenitic stainless steels, elungiselelwe ukuhlangabezana neemfuno zeeprojekthi ezahlukeneyo zepayipi.
Iithegi: ASTM A334, carbon steel pipe, astm a334 gr 6, astm a334 gr 1.
Ixesha lokuposa: May-20-2024