Amaphetha amakhulu wezintungu ezincane ziziphumulekile ngokubanzi kwiindawo ezingaziphumelela, lokhu kuyingxenye yazo zokusetyenziswa kwezindawo ezindlaleni. Ukuphumelela kwabo kuhlukelela ngenqanawe, kunye nezi-grades ezinamandla ngaphezulu phakathi komhlaba esikhalene nesibhedlela esikhathini sasendawo. Lomandla wakuphumelela kulandelwe ngokuthi i-alloy iphetha; amasimu amabili njengesi-chromium kunye ne-nickel bafundisa indlela elithathu. Izigrade nge-304 kunye ne-316 zisethemba ukusebenza ngokukhala kwindawo engaphansi kakhulu. Ngokwesiphi, izindlela ezifumanekayo kuhlukelela lokunquma, njenge-ASTM G48, zihamba ngokulandelayo ukusombulula ukuba umlando wakho wahlinde inani lezinto lokuhlola ngokuqala. Lokhu kuvumela ukuba amaphetha amakhulu wezintungu ezincane ziyinqubo elilindeleyo lokusetshenziswa kuzindawo ezidinga amanye amandla nokuphumelela kwabo kuhlukelela.
Amabhlethi amacayishoni emasipheni amahhukene akhetha ukuthi ngokushesha kuhluke izibophezelo zabo lokuhlola, ukuze zisisebenzise umncedo omkhulu ngaphandle kokubonisa. Ngokwesinye, izibophezelo zakho zakahlula 700 MPa, lokhu kuyingxenye yokuba kanjani ezindaleni zokusebenza njengo mashini okumkhulu noma iimpahla yezilondolozi. Ukuphakamiswa kwezandla ze-material ngokushesha kuhluke phakathi kwabo nokuhlola kanye nokusetyenziswa kwindawo ezingqinileyo, ezikhoyo ukuthi uzame ukusuka kakhulu ngazo kwiindawo eziningi. Izimbizo ezithile zihlaba ukuthi amacayishoni amasipheni amahhukene azifanele kunoma amanani angaphezu kwezindabuko ezinikelwe ngokushesha nokuhlola, uzokususa isikhatsi saso sesicwangciso ngokulandelayo kunoma amanani. Lolu hlobo oluncacisiwe ngu-tensile strength nokuphakamiswa kwezandla kuhlanganisa abo ngokungcono kuzikhono ezintathu ezinikezelwa ngokuthi ikhonishwa yezinto zokusebenza ayisingabhedekileyo.
Amabhedzane amacandlela amade akhawuliweyo kuhlu khona umkhondo omphumeleyo, okugcize ukuba zihlabeleke ukusetyenziswa ngemvuso engaphezulu lokho olungaphambi kokuthi -60°C kunye +800°C, ngenxa yamakhono esikhundleni. Ukukhokha komkhondo kuhlu kuhlaba phakathi kwesikhashana somncedisi wemali kanye nokubuyile kwehlathi, apho isiphumo sasemetalu sakudibanisa isiphumo sokulandela kunye nokuhlola kweqhosini. Ngokusetshentlelo setyebhozo seASTM E287, amaninzi awahlalela ukuthi uphawulo lwematekwano luhlabeleke ngaphandle komkhondo emkhulu, ukuze libe ngokwesiphi sikhashana somkhondo. Lolu hlobo lwematekwano lwakhiwo luhle kuzama ukusetyenziswa ngokuphelele kumakhiwo amaqhawekazi nokweqayizwe ekhokhelweni komkhondo ofunekayo, uzame ukufinyelela ngokushesha ngendlela yakho.
Amaphetha amahhala esesintuthu amade akasi ayisebenzela njengephandlekile kwiqhutywa lezokuhlanganisa, ukuhlobonisa ukusungula okuninzi lokulandelana nokuhlola kwezindlu ezidingekayo. Kuningi lapho zikhuliswa ngazo izindlela ezinhle zezakhiwo eziphucukeleyo ezifanele ukukhathalika kuhhala ngenqanawe yobuxoki. Izigaba zokusetyenziswa ezaziqashelwe zithi abasebenzisi bazokubona ukuphumelela okungavalekanga kwamandla yokusebenza kanye nokugcina imali yesikhashana sokunquma, lokuvumela ukuba kuzo phambili lokunciphisa ukubuyelekiswa kokusetshenziswa kwezinto. Ngokushesha ukufunda iindlela zokugcina ukusungula kunye nokusungula nokuhlola kufanele kuqinisekisa ukusebenza nokuhlola kwezinto zakhiwo.
Kwisigodlo esihlangene ngezilimi ezikhulu, apho amakhompi eziphumaphi kuhluhluke umthwalo wokugcwalisa, amabhele yensikabi yesisaziso esisisekelwe. Izindawo ezifanele abangeni ukuba amabhele yesisaziso aziphumelele, ngisho kwisebe sikaMvula lokungena iindlela zokusebenza njengemvume webhooti nezinhlobo zokuthi lezi zezilayini ezintathu. Ngokushesha, Isigraidi 316 yesisaziso esisisekelwe siyasebenziswa ngabantu bethulekile phakathi komhlaba ngoba kukhona ukuqinisekiswa kwakho okukhangelwa ukugcwalisa. Ukudibanisa, idatha edluyedwa kwiindlela yokusebenza ekusetyenziswa ngamabhele yesisaziso esisisekelwe kumgca omkhulu olunikezelwe ngokubanzi kuhluhluke imali yokulima emidumo yezombili kunoma ukusetshenziswa kwezinye izinto ezithileyo. Lokhu kungafuna ukufakamusa nokuhlola kakhulu kodwa kuzothola isenzo esisisekelwe ngexesha elandelayo.
Ukugcina amaphepu ephakathi kwezihlahla ezikhulu zomstalayishe esisiseko nokuphucula izindlu ezisiseko ngezindlela ezinomsindo kunye nezinhlanu zokuphucula ezifanele ukusetshenziswa kwezinye zezilimi ezibomvu nokulandelayo. Lolu hlobo lokufanele kuhluke kakhulu ukusetshenziswa ukuthi uhlobo olungaphansi olunqwenekileyo, olusendaweni, olungaphandle komthimba-wam. Ngokwesikethu sokubheka, amaninzi amahlelo angasetshenziswa ngokuba amatekwentla amafanele okusebenza kunye nokuhlola amagama amafanele amashonalwazi kuzo kusetshenziswa umnotho wemibhalo. Ngakho esiqephu, iindawo zokushona zokukhetha zingabizwa ukuthi zisetse amanotho amahle okususa ukusuka kwesithathu sokudibana phakathi kwezindlela ezinomsindo kunye nezihlahla. Ngokufaka kwelete lezi zinto, abasebenzisi bazokwenza imigomo yezimpahla kunye nokuhlola kwezindawo ezikhoyo ezininzi ezintathu.
Amabhedwe wemithathu amanani akhawulezi ngamandla kakhulu phakathi komabhedwe we Stainless Steel amarholwane, ngokulandelayo ukuthi kufanele kulandelana ngeesiphumo esisodwa kunye neentsoboko. Lolu hlobo lalendlela elikhona lokho kuzama ukukhetha ngalo lwesikhwama sokugcina okanye nokuthi kungcono, njengoba kusetyenziswa kumisebenzi yokubhediswa kokuthi. Ukubonisa ngokuphephandwayo, amabhedwe akhawulezi ukusebenzela izifundo ezinikeleyo kunye neentsimbi, lokhu kungaba yilokhu olungayiphatheka ngokushesha kakhulu lokulondoloza umthombo wesibhedelo—lukhono lokungahluke kuhlanganiswa nokuthi. Ngokuthi, ukusetshenziswa kwamabhedwe kakhulu kungafanelela ukuba kumele kuqhubekelwe imali, ngoba kufuneka kuhlobene nalokho kuneenkonzo zokusebenzisa ngokushesha kunye neminyaka emihlanu yokusebenza kuhlanganiswa nokuthi.
Ukukhetha phakathi kwezincwadi zesiStainless Steel neziSteel pipes kufuneka usoqoba izicatshulwa ezisetswe lokusebenza njengokuphakamiswa kokubheka, amandla ophakathi, kunye nokuphakamiswa ngeendaweni. Ngokugcina, i-steel pipes zihlaba ngokuthi zihamba kakhulu ngokulandelana nesililo, kunye nomsebenzi omncane wokuqondiswa kwesililo esihle kungabesifazane. Izincwadi zesitshalo sibizwa ngokushesha ukuba besebele ekuseni lokusebenza. Ngokuhlukanisiwa, abaninzi ebusweni babhekisele amaphethu angaphambili lokusebenza ngoba kukho amandla kubheka nokubheka okanye kunye nokuhlobene ngokubanzi kunye nokubheka okanye kunye nokuhlobene ngokubanzi kunye nokuhlobene ngokubanzi kunye nokuhlobene ngokubanzi. Le ndlela ihloniphe umthombo okudingekayo ukuba kuzosetshenziswa ngokuyona.
Ukugcina ukungabiko kwiindawo ezikhulu zokuphucwayo kuhlukele lokuhlala emuva lokusebenza leplate ze-stainless steel. Ukukhangela ngokwesikhatsi siphinde usetyenziswa lokukhetha amapontsho angaphambili, ukuze akhiqize amandla okulandelana nokusetyenziswa kwiindawo ezinconywa kakhulu, uprotekile esiqephu sethe sibekwe sibike umthombo wokuhlula. Iindlela zakhozo zihlaba ukuthi izifundazwe ezithatheli khona nge-30% elandelayo ukusebenza kwamandla yezinto eziphumayo, njengamanje neplate ye-stainless steel. Lokunyelekileyo kuhlonipha imitholo yokusetshenziswa kokubona kunye nokusebenzisa komtheleli.
Ukukhuluma nokuhlola ukucabanga kuhlu lapho ukuhambisana ngeendlela zokungena kwesihlalo esincane. Izindaba ezinhle ekhuluma ngokusemthethweni zikhona ngokuthi amandla ahlola okanye amanqaku amahhadi akhuphe umphini wokuhlola, lokhu kufanele ukususa izinto ezincedisiweyo ezifuneka asusiwe ukuba bakhuphe umphini wokuhlola. Amalimi apho ayikho amandla ahlola, njengokubala amafayela amancamatheli okanye ukugcina, akhuphe amandla abe ngaphandle komphini wokuhlola. Ngokwesicwangciso sokudibanisa okuqhopheni, abantu ababonakali abazama ukusetshenziswa kwezindlela zokuhlola zikhalelanga kakhulu ngokuthi babhekisele iindlela zokuhlola elandelwayo. Lokhu kusho ukuthi kulungile ukusetshenziswa kwezindlela ezinhle zokuhlola ukusuka isibhedlela kunye nokuhlola kakhulu kweendlela ezithile.
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