Ukukhetha impahla efanele yezindawo ezisezingeni eliphezulu lokushisa nokucindezela okuphezulu kungenye yezinqumo ezibaluleke kakhulu ezingqondweni zonjiniyela nochwepheshe bokuthenga ezimbonini ezinjengokukhiqiza amandla, ukucubungula amakhemikhali, nokushisisa kwezimboni. Ithubhu elehluleka ngaphansi kwengcindezi yokushisa noma izimo ezibolayo lingaholela ekulahlekelweni kwesikhathi okubizayo, izingozi zokuphepha, nokulimala kwedumela. Yingakho i-ASTM A192 seamless steel tube isiphenduke ibhentshimakhi yokucaciswa kwezinhlelo zamabhoyela, ama-heat exchanger, nama-superheater lapho ukuthembeka kungukuthi akuxoxiswana. E-Wuxi Hengzhihui Metal Materials Co., Ltd, sihlanganisa ukulawulwa kwekhwalithi okuqinile nobuchwepheshe obujulile ukuze silethe amashubhu adonswa abandayo (cold drawn seamless tubes) ahlangabezana namazinga omhlaba aqinile kakhulu. Ukuzibophezela kwethu ekukhiqizeni okunembile, ukutholakala kwezinto ezilandelwayo, nokuhlolwa okuphelele kuqinisekisa ukuthi yonke ithubhu le-ASTM A192 eliphuma endaweni yethu lisebenza ngokungaguquki ngaphansi kwezimo ezinzima. Kulesi sihloko, sizohlola izici ezichazayo zalokhu kucaciswa, izinzuzo zenqubo yokudonsa ebandayo, izakhiwo zemishini namakhemikhali ezihlukanisa, nokuthi kungani ukusebenzisana nomhlinzeki onolwazi njenge-Wuxi Hengzhihui kungenza umehluko obonakalayo emiphumeleni yephrojekthi yakho.

I-ASTM A192 iyindinganiso ejwayelekile ekhishwe yi-American Society for Testing and Materials ehlanganisa amashubhu ensimbi enganasici (seamless carbon steel boiler tubes) enzelwe ukusetshenziswa ngaphansi kwengcindezi ephezulu. Lawa mashubhu aklanyelwe ngokuqondile izinhlelo zokusebenza ezibandakanya amazinga okushisa aphakeme, njengamashubhu ezindonga zamanzi (water-wall tubes), amashubhu e-superheater, namashubhu e-heat exchanger ezikhungweni zamandla nakubhayela ezimbonini. Inqubo yokukhiqiza iqala nge-solid round billet yensimbi enganasici, efudunyezwa bese igqojozwa ukuze yakhe igobolondo elingumgodi. Lelo gobolondo bese lidingidwa ngokubandayo (cold drawing), inqubo lapho ishubhu lidonswa nge-die ekamelweni lokushisa ukuze kutholakale ubukhulu obunembile kanye nendawo ebushelelezi ebushelelezi. Ngokungafani namashubhu aqedwa ngokushisa (hot-finished tubes), angabonisa ukuyikilima okuncane, ubukhulu bodonga obushintshashintshayo, nendawo yangaphakathi emahhadlahhadla, amashubhu e-cold drawn seamless anikeza ukunemba okuphezulu nokufana okungcono. Uhlobo lwe-seamless lomkhiqizo lisho ukuthi alukho umthungo oshiswayo (welded seam) ongaba yindawo ebuthakathaka ngaphansi komthwalo wokushisa ojikelezayo noma ingcindezi yangaphakathi ephezulu. Konjiniyela abacacisa izingxenye zemishini ebucayi yokudlulisa ukushisa, ukungaguquguquki kwamashubhu e-ASTM A192 e-cold drawn kuhumushela ngqo ekuphileni isikhathi eside kanye nokunciphisa ukungenelela kokulungisa.

Ukwakheka kwamakhemikhali e-ASTM A192 seamless steel tube kulinganiswe ngokucophelela ukuze kunikeze amandla, ukuqina, nokukwazi ukushisela ezindaweni ezishisayo kakhulu. Imithetho ibeka ikhabhoni phezulu ku-0.18%, i-manganese phakathi kuka-0.27% no-0.63%, isulfure phezulu ku-0.035%, ne-phosphorus phezulu ku-0.035%. Ikhabhoni inikeza amandla ayisisekelo ensimbi, kuyilapho i-manganese ithuthukisa ukuqina nokusiza ekukhipheni umoya-mpilo ngesikhathi sokukhiqiza. Ukugcina isulfure ne-phosphorus ziphansi kubalulekile ukuze kuvinjelwe ukuqhekeka nokuqhekeka okubangelwa ukushisa ngesikhathi sokushisela noma sokubumba. Ngakolunye uhlangothi lwemishini, izinga lidinga amandla okudonsa okungenani angu-380 MPa, amandla okuvumela okungenani angu-205 MPa, nokunwebeka okungenani okungu-25% kubude obungu-50 mm, nakuba amanani avamile evame ukufinyelela cishe ku-30%. Lokhu kuhlanganiswa kwamandla nokuqina kusho ukuthi ishubhu lingamunca izingcindezi zokunwebeka ngenxa yokushisa ngaphandle kokuqhekeka futhi lingashiselwa ngokuthembekile libe yizakhiwo eziyinkimbinkimbi zamabhoyela. Thina e-Wuxi Hengzhihui Metal Materials Co., Ltd sihlala sihlola yonke iqoqo lokushisa ukuze siqinisekise lawa manani, futhi sinikeza izitifiketi ezigcwele zokuhlola izimboni (Mill Test Certificates) ngayo yonke imithwalo ukuze amakhasimende ethu akwazi ukuqinisekisa ukuthobela imithetho yamaphrojekthi abo. Noma ngabe uthenga isikhungo samandla esisha noma ushintsha amashubhu kusishintshi sokushisa esikhona, ukwazi imininingwane enembile yensimbi yakho kubalulekile ukuze kusebenze ngokuphephile nangempumelelo.

Inqubo yokudonsa ebandayo iyisici esichazayo samashubhu e-ASTM A192 asezingeni eliphezulu futhi inikeza izinzuzo ezilinganisekayo eziningi ezingenakufaniswa nezinye izindlela ezenziwe ngokushisa. Okokuqala, ukunemba kobukhulu kuthuthukiswa kakhulu: amashubhu adonswe ebandayo angabamba ukubekezelela ububanzi obungaphandle obuqinile njengo-±0.005 amaintshi kanye nokuhluka kobukhulu bodonga ngaphakathi kuka-±5%, okubalulekile lapho amashubhu kufanele afakwe emashidi amashubhu aqinile noma agingqwe emgqonyeni we-boiler. Okwesibili, ukuphela kwendawo yeshubhu elidonswe ebandayo kubushelelezi kakhulu, ngamanani ajwayelekile okushukuma aphansi kakhulu kunalezo zemikhiqizo eqedwe ngokushisa. Indawo yangaphakathi ebushelelezi inciphisa ukwehla kwengcindezi yokungqubuzana ekugelezeni koketshezi, ithuthukisa ukusebenza kahle kokushisa kwama-heat exchanger tube bundles futhi yehlise izindleko zokumpompa emashumini eminyaka enkonzo. Okwesithathu, ukusebenza ebandayo kukhulisa amandla emishini yensimbi ngokuqina kwe-strain hardening, okuvumela abaklami ukuthi basebenzise izingxenye zodonga oluncane ngaphandle kokudela izilinganiso zokugqabhuka kwengcindezi. Lokhu kunciphisa isisindo kungahumushela ezindlekweni eziphansi zezinto zokusebenza kanye nemithwalo elula yesakhiwo ezakhiweni ezisekelayo. Okokugcina, inqubo yokudonsa ebandayo iqeda ukukhubazeka kwendawo okufana ne-scale, imigodi, kanye nama-laminations okungase kube izindawo zokuqala zokugqwala kokukhathala. Kunoma yisiphi isicelo esibandakanya izingcindezi ezishintshayo zokushisa—njengemijikelezo yokuqalisa nokumisa ku-boiler—ukuphelela kwendawo okungaphezulu kweshubhu elinganakiwe elidonswe ebandayo kuyinzuzo enqumayo. Uma uhlanganisa lezi zinzuzo zobuchwepheshe nokulandeleka kanye nezinhlelo zekhwalithi esizigcinayo e-Wuxi Hengzhihui, ishubhu le-ASTM A192 elidonswe ebandayo liba ingxenye enobungozi obuphansi, enenani eliphezulu ezinhlelweni ezibalulekile.

Iqiniso lokuthi ikhwalithi ayiyona into ecatshangwa ngemuva nje e-Wuxi Hengzhihui Metal Materials Co., Ltd; ihlanganiswe kuzo zonke izigaba zokukhiqiza kusukela ekuhlolweni kwezinto zokusetshenziswa kuya ekupakishweni kokugcina. Wonke umgoqo wensimbi ongena endaweni yethu uyaqinisekiswa ngokuqhathaniswa nezitifiketi zomshini ngokwakheka kwamakhemikhali ngaphambi kokuba ukhishwe ukuze kucutshungulwe. Ngesikhathi nangemva kokudonswa okubandayo, ishubhu ngalinye lihlolwa ngezivivinyo ezingenabungozi ukuze kuqinisekiswe ubuqotho balo. Ukuhlolwa kwe-Eddy current kuthola ukungaqhubeki ebusweni naseduze nendawo engaphezulu njengemifantu, ukugoqeka, nemithungo okungase kube nomthelela ekugcineni ingcindezi. Ukuhlolwa kwe-Ultrasonic kusebenzisa amagagasi omsindo anemvamisa ephezulu ukuze kuhlolwe ubukhulu bodonga lonke ukuze kutholakale izikhala zangaphakathi, ukwehlukaniswa kwezingqimba, noma ukufakwa okungase kungabonakali ngokuhlolwa ngamehlo. Ukuhlolwa kwengcindezi ye-Hydrostatic kubeka ishubhu ngalinye ngaphansi kwengcindezi yangaphakathi engaphezu kwezinga layo lokuklama, ngokuvamile kubamba ingcindezi isikhathi esingaphansi kwemizuzwana emihlanu ngenkathi abahloli behlola ukuvuza noma ukunwetshwa okweqile. Ngaphezu kwalezi zivivinyo eziyimpoqo, sivamise ukwenza izivivinyo zokuvula, zeflange, nezobulukhuni ukuze siqinisekise ukuthambeka nokungaguquguquki. Wonke umphumela wokuhlolwa uyarekhodwa futhi uxhumaniswe nenombolo yokushisa ethile kanye neqoqo lamashubhu, okunikeza ukulandeleka okugcwele kwezinto kusukela embonini yensimbi kuya endaweni yakho yomsebenzi. Amakhasimende ethu athola Izitifiketi Zokuhlolwa Komshini ezinemininingwane ezibhala zonke izakhiwo zamakhemikhali namechanical, izilinganiso zobukhulu, kanye nemiphumela yokuhlolwa. Leli zinga lemibhalo libaluleke kakhulu emaphrojekthini adinga ukuthotshelwa kwe-ASME Boiler and Pressure Vessel Code noma ezinye izinhlaka zokulawula. Uma ukhetha i-Wuxi Hengzhihui njengomhlinzeki wakho wamashubhu e-ASTM A192, awuthengi nje insimbi; uthenga ukuthula kwengqondo okusekelwa amazinga omhlaba wonke nethimba lekhwalithi elinamava.

Ama-tubes e-ASTM A192 angenamthungo akhelwe ngokuyinhloko ukusetshenziswa ezinhlelweni zamabhoyela, lapho asebenza khona njengamashubhu odonga lwamanzi, amashubhu e-superheater, namashubhu e-economizer adlulisa ukushisa kusuka kumagesi okusha kuya emanzini noma kumhwamuko. Kumabhoyela ajwayelekile wokusebenzisa, amakhulu alawa mashubhu ahlelwa ngamaphaneli ukuze kwandiswe indawo yokudlulisa ukushisa kuyilapho emelana nengcindezi yangaphakathi engadlula u-2,000 psi. Ngale kokukhiqiza amandla, le ncazelo yamukelwa kabanzi kuma-heat exchanger ezimbonini zokucwenga i-petrochemical, izimboni zamakhemikhali, nezinhlelo zamandla ezimbonini. Ama-tube bundle e-heat exchanger kumele amelane nengcindezi yangaphakathi kanye nokugqwala kwangaphandle okuvela kuma-process fluids, futhi umgodi obushelelezi we-tube edonswe ebandayo unciphisa ukungcola nokunqwabelana phakathi nezikhathi zokusebenza ezinde. Lawa ma-tube nawo asetshenziswa kuma-air preheater, kuma-feedwater heater, nasezinhlelweni zokukhipha amanzi (condensing) lapho izinga lokushisa lishintsha kakhulu. Emkhakheni kawoyela negesi, ama-tube e-ASTM A192 asebenza kuma-steam generator okuthuthukisa ukukhipha uwoyela (enhanced oil recovery) nakuma-process heater akhulisa izinga lokushisa lemifudlana ye-hydrocarbon ukuze kufinyelelwe amazinga okusabela. Izimo ezingezona ezokuklama njengokushintshashintsha kokushisa (thermal cycling), ukudlidliza okuvela ekugelezeni, nezindawo ezishisayo ezithile—konke lokhu kudinga izakhiwo zemishini ezingaguquki kanye nobuso obungenasici obunikezwa i-pipe engenamthungo edonswe ebandayo. Konjiniyela nabahloli bokuthenga abahlola izinketho, ububanzi bezinhlelo zokusebenza bugcizelela ukuthi kungani i-ASTM A192 ihlale iyincazelo ethenjwayo amashumi eminyaka. I-Wuxi Hengzhihui ihlinzeka lawa ma-tube ngobubanzi obuhlukahlukene nobukhulu bodonga, futhi singakwazi ukwenza ngendlela oyifisayo ubude ukuze buhambisane nokuhlelwa kwama-bundle akho noma izidingo zokushintsha.

I-Wuxi Hengzhihui Metal Materials Co., Ltd isakhe igama emakethe yomhlaba wonke yamapayipi ensimbi ngokuhlanganisa amanani ancintisanayo nezikhathi zokulethwa ezithembekile kanye nokuvumelana nezimo kwezobuchwepheshe. Siyaqonda ukuthi izinhlelo zamaphrojekthi zivame ukuba ziqinile, futhi ukubambezeleka kokuthunyelwa kwamapayipi kungamisa wonke umsebenzi wokwakha noma wokulungisa. Ukuhlela kwethu kokukhiqiza okuhlelekile nokuphathwa kwempahla kusivumela ukuthi sinikeze izikhathi zokulethwa ezimfushane kosayizi abajwayelekile kuyilapho sisabhekana nobukhulu obukhethekile uma kudingeka. Ithimba lethu lineminyaka eminingi yobungcweti ekukhiqizeni amapayipi angenamthungo, isayensi yezinsimbi, kanye nokuthutha kwamazwe ngamazwe, okusho ukuthi singakweluleka ngokukhetha izinga lensimbi, izimfuno ezihlukile, kanye nezidingo zokupakisha zokuthutha ngolwandle noma ngendiza. Sinayo isitifiketi se-ISO 9001, futhi uhlelo lwethu lokuphatha ikhwalithi luhlolwa njalo ukuze kuqinisekiswe ukuthobela imithetho okuqhubekayo. Lesi sitifiketi akusona nje uphawu; simele indlela eqondile yokuphatha imibhalo, izinyathelo zokulungisa, kanye nokuthuthukiswa okuqhubekayo okuzuzisa amakhasimende ethu ngqo. Sithumela emazweni e-Asia, e-Middle East, eNingizimu Melika, naseYurophu, futhi sikwazi ukubhekana nezidingo zamadokhumenti nezitifiketi ezibekwa amazwe ahlukene. Noma ngabe udinga i-oda elincane lomsebenzi wokulungisa noma isabelo esikhulu sokwakhiwa okusha, ithimba lethu lokuthengisa e-Wuxi Hengzhihui likulungele ukukunikeza isilinganiso esikhethekile phakathi namahora angu-24. Sikhuthaza amakhasimende ukuthi avakashele ifektri yethu.Ikhaya ikhasi ukuze ufunde kabanzi ngohlu lwethu olugcwele lwemikhiqizo futhi ubrowse i-Imikhiqizo ikhasi ukuze uthole imininingwane eningiliziwe ngamapayipi angenamthungo, amapayipi a-welded, kanye nama-die castings. Ngaphezu kwalokho, i-Izindaba isigaba siveza izibuyekezo ngezitayela zemboni nentuthuko yenkampani, kuyilapho i-Isitifiketi ikhasi libonisa izitifiketi zethu ze-ISO 9001, API, kanye ne-PED. Ukuze uthole ukubuka okujulile emlandweni wenkampani yethu namanani, sicela ubheke i-Mayelana Nathi ikhasi.

I-ASTM A192 seamless steel tubes zimelela isixazululo esingaguquki, esingabizi kakhulu ezinhlelweni ezidinga kakhulu zokushisa okuphezulu nokucindezela okuphezulu kuma-boiler, ama-heat exchanger, nezinhlelo ze-petrochemical. Inqubo yokudonsa ngokubanda (cold drawing) iletha ukunemba kobukhulu, ikhwalithi yobuso, namandla emishini okungafinyeleleki kuma-tubes enziwe ngokushisa (hot-finished tubes), kanti ukulawulwa okuqinile kwamakhemikhali kuqinisekisa ukuthi i-weldability nokusebenza kuhlala kungaguquki eminyakeni eminingi yokusetshenziswa. Ngokukhetha umhlinzeki onjengo-Wuxi Hengzhihui Metal Materials Co., Ltd, uthola ukufinyelela ekuhlolweni kwekhwalithi okuqinile, ukulandeleka okugcwele kwezinto zokusetshenziswa, kanye nethimba eliqonda izingcindezi zobuchwepheshe nezohwebo zamaphrojekthi ezimboni. Siyakumema ukuthi uxhumane nethimba lethu lezokuthengisa ukuze uthole isilinganiso sezindleko, ukuxoxa ngezidingo zakho ezithile zobukhulu nezitifiketi, noma ukufunda kabanzi ngendlela ama-cold drawn seamless tubes ethu angengeza ngayo inani kuphrojekthi yakho elandelayo. Xhumana no-Wuxi Hengzhihui namuhla futhi uzwe umehluko okwenziwa ikhwalithi ezinikele, amanani ancintisanayo, nesevisi ephendula ngokushesha ochungechungeni lwakho lokuhlinzeka.