I-A2-70 yenziwe ngantoni?
Yintoni i-A2-70 eyenziwe ngumbuzo oqhelekileyo kwishishini lemichiza kunye nakwi-fasteners. Ukuqonda izinto eziphathekayo, iipropati kunye nokusetyenziswa kwe-A2-70 kubalulekile ekuqinisekiseni impumelelo yeprojekthi yakho. Kweli nqaku, siza kubonelela ngenkcazo ebanzi yenkcazo yezinto eziphathekayo, ukwakheka, kunye neempawu ze-A2-70 kunye nokusetyenziswa kwayo kumashishini ahlukeneyo.
Inkcazo esisiseko ye-A2-70 Material
I-A2-70 ibhekisela kwinkcazo ye-austenitic stainless steel edla ngokusetyenziswa kwii-fasteners ezifana ne-bolts, i-nuts kunye ne-screws.I-A2 imele uhlobo lwezinto eziphathekayo, ngelixa i-70 ibonisa ukulinganisa amandla ayo. Ngokukodwa, izinto ze-A2-70 zihambelana nomgangatho we-ISO 3506 wamazwe ngamazwe kumabakala ensimbi engenasici, kwaye ineempawu ezibalaseleyo ngokukodwa malunga nokumelana nokubola kunye namandla omatshini.
Ukubunjwa kweekhemikhali ze-A2-70
Izinto ze-A2-70 ziwela phantsi kwecandelo le-304 yensimbi engenasici, kunye namacandelo aphambili aquka isinyithi, i-chromium (18%), i-nickel (8%), kunye nenani elincinci lekhabhoni (ubuninzi be-0.08%). Ukwakhiwa kweekhemikhali zale ngxubevange kunika ukuxhathisa okulungileyo kokubola kunye namandla omatshini. Ngokukodwa, ukongezwa kwechromium kwenza ifilimu ekhuselekileyo ye-chromium oxide, ekhusela ngokufanelekileyo i-oxidation kunye ne-corrosion. I-nickel component, ngakolunye uhlangothi, ikwandisa i-ductility kunye nokuqina kwezinto eziphathekayo, ngakumbi ukuphucula amandla ayo okusetyenziswa kwiindawo ezinzima.
IiPropati zeMechanical ze-A2-70
Iipropati ze-Mechanical ziyinto ephambili ekuqondeni ukuba i-A2-70 yenziwe ngantoni, njengoko i-A2-70 inamandla okunciphisa ubuncinci be-700 MPa, apho i-"70" ivela khona, i-A2-70 inokumelana nokucheba okulungileyo, i-ductility kunye namandla okudinwa.
Iindawo zokusetyenziswa kwezixhobo ze-A2-70
Ngenxa yokumelana nokugqwesa kwayo okugqwesileyo kunye neempawu zemishini, izinto ze-A2-70 zisetyenziswa kuluhlu olubanzi lwamashishini, ngakumbi kumacandelo ekhemikhali, elwandle, ekwakhiweni nasekulungiseni ukutya. Kwishishini lemichiza, i-A2-70 isetyenziswa ngokuqhelekileyo kwizixhobo kunye neenkqubo zokubhobhoza ezifuna ukuchasana neekhemikhali ezitshabalalisayo. Ukuxhatshazwa kwe-corrosion ye-A2-70 nayo ibalasele ngakumbi kwiindawo zaselwandle, okwenza ukuba ilungele ukusetyenziswa ekwakhiweni kweenqanawa, iiplatifomu zeoli ye-offshore, kunye nezinye izicelo ezifuna ukuxhathisa ukubola kwamanzi olwandle.
Izinto eziluncedo kunye nokungahambi kakuhle kwe-A2-70 yohlalutyo lwezinto
Xa kuthelekiswa nezinye izinto zensimbi ezingenasici, i-A2-70 ineenzuzo ezininzi, ezifana nokuchasana kakuhle kwe-corrosion, amandla aphezulu omatshini kunye noluhlu olubanzi lwezicelo. Kananjalo ineminye imida.I-A2-70 ayifanelekanga ukusetyenziswa kwiindawo ezine-concentration ephezulu ye-chloride ion, njengoko oku kunokukhokelela kwi-pitting corrosion. Inokumelana nobushushu obuphezulu kwaye ayifanelekanga ukusetyenziswa kwiindawo eziphakamileyo zobushushu obugqithisileyo.
Isishwankathelo
Impendulo kumbuzo wokuba yintoni i-A2-70 eyenziwe ngayo kukuba i-A2-70 yintsimbi ye-austenitic yensimbi engenasici esekelwe kwi-304 yensimbi engenasici, enokumelana ne-corrosion efanelekileyo kunye namandla omatshini, kwaye isetyenziswa ngokubanzi kwiinkalo ezininzi ezifana neshishini lemichiza, i-marine, kunye nokwakhiwa. Ukuqonda izinto eziphathekayo kunye neemeko zesicelo se-A2-70 kunceda ukwenza ukhetho olunolwazi oluthe xaxa kwiiprojekthi zobunjineli.
Ngokusungulwa kweli nqaku, ndiyakholelwa ukuba unokuqonda okunzulu ngakumbi kwe-A2-70 impahla, enika ulwazi olubalulekileyo kwizigqibo zeprojekthi zexesha elizayo.