Intsimbi engatyiwayo yeCNC Machining Amacandeloyenye yezona zinto zixhaphakileyo zentsimbi kumsebenzi wesixhobo. Ukuqonda ulwazi lwensimbi engenasici kuya kunceda abaqhubi bezixhobo ezingcono zokukhetha izixhobo zenkosi kunye nokusetyenziswa.
Stainless Steel sisishunqulelo intsimbi stainless kunye acid resistant steel. Intsimbi echasene nemithombo ye-corrosion ebuthathaka njengomoya, umphunga kunye namanzi okanye inepropati engenanto ebizwa ngokuba yintsimbi engapheliyo; Intsimbi enganyangekiyo kwimichiza ye-corrosion medium (i-asidi, i-alkali, ityuwa kunye nezinye iikhemikhali ze-etching) ibizwa ngokuba yintsimbi enganyangekiyo kwi-asidi.
Intsimbi engatyiwayo ibhekisa kwintsimbi ekwaziyo ukumelana nemithombo yeendaba ebuthathaka enjengomoya, umphunga kunye namanzi kunye namajelo eendaba etshiza imichiza anjengeasidi, ialkali netyuwa, ekwaziwa ngokuba yintsimbi enganyangekiyo eneasidi. Kwizinto ezisetyenziswayo, intsimbi ekwaziyo ukumelana nentsimbi ebuthathaka idla ngokubizwa ngokuba yintsimbi engatyiwa, ngelixa intsimbi ekwaziyo ukumelana nemichiza ibizwa ngokuba yintsimbi enganyangekiyo kwiasidi. Ngenxa yomahluko kukwakheka kweekhemikhali phakathi kwezi zimbini, eyokuqala ayinyanzeli ukuba ixhathise kwi-corrosion yekhemikhali ephakathi, ngelixa le yokugqibela ingenabala. Ukuxhatshazwa kwe-corrosion yensimbi engenasici kuxhomekeke kwizinto ze-alloy eziqulethwe kwintsimbi.
Ukuhlelwa okuqhelekileyo
Ngokubanzi, yahlulwe ibe:
Ngokuqhelekileyo, ngokwesakhiwo se-metallographic, iintsimbi eziqhelekileyo ezingenasici zihlulwe zibe ziindidi ezintathu: i-austenitic stainless steels, i-ferritic stainless steels kunye ne-martensitic stainless steels. Ngokwesiseko sezi zakhiwo zintathu ze-metallographic ezisisiseko, i-double phase iron, imvula eqinile iqinile insimbi engenasici kunye nentsimbi ephezulu ye-alloy kunye nomxholo wentsimbi engaphantsi kwe-50% ifunyenwe kwiimfuno kunye neenjongo ezithile.
1. Austenitic steel stainless.
I-matrix ubukhulu becala i-austenitic structure (isigaba seCY) enobuso obugxile kwi-cubic crystal structure, engeyiyo imagnetic, kwaye iyomelezwa ngokukodwa (kwaye inokukhokelela kwimagnetism ethile) ngokusebenza okubandayo. I-American Iron and Steel Institute iboniswa ngamanani angama-200 kunye nama-300, njenge-304.
2. Ferritic steel stainless.
I-matrix ubukhulu becala isakhiwo se-ferrite (isigaba a) kunye nesakhiwo se-cubic crystal yomzimba esigxile kwi-cubic crystal, enemagnethi, kwaye ngokubanzi ayinako ukuqina ngonyango lobushushu, kodwa inokuqiniswa kancinci ngokusebenza okubandayo. I-American Iron and Steel Institute iphawulwe ngo-430 kunye ne-446.
3. Martensitic steel stainless.
I-matrix yisakhiwo se-martensitic (i-cubic yomzimba ephakathi okanye i-cubic), i-magnetic, kunye neempawu zayo zomatshini zinokuhlengahlengiswa ngonyango lobushushu. I-American Iron and Steel Institute iboniswa ngamanani 410, 420, kunye ne-440. I-Martensite inesakhiwo se-austenitic kwiqondo lokushisa eliphezulu. Xa ipholile kwiqondo lokushisa kwiqondo elifanelekileyo, isakhiwo se-austenitic sinokuguqulwa sibe yi-martensite (oko kukuthi, lukhuni).
4. I-Austenitic ferritic (i-duplex) yensimbi engenasici.
I-matrix inezo zombini i-austenite kunye ne-ferrite izakhiwo zesigaba sesibini, kunye nomxholo we-matrix yesigaba esingaphantsi ngokubanzi ngaphezu kwe-15%, enemagnethi kwaye inokomelezwa ngokusebenza okubandayo. I-329 yintsimbi eqhelekileyo ye-duplex. Xa kuthelekiswa nentsimbi ye-austenitic stainless, intsimbi yesigaba esimbini inamandla aphezulu, kwaye ukuchasana kwayo ne-intergranular corrosion, i-chloride stress corrosion kunye ne-pitting corrosion iphuculwe kakhulu.
5. Imvula yenza lukhuni intsimbi engatyiwayo.
Intsimbi engatyiwayo enematrix yi-austenitic okanye i-martensitic kwaye inokuqiniswa yimvula eyenza lukhuni unyango. I-American Iron and Steel Institute iphawulwe ngamanani angama-600, afana ne-630, okt 17-4PH.
Ngokuqhelekileyo, ngaphandle kwe-alloy, i-austenitic stainless steel inokumelana nokugqwesa okugqwesileyo. I-Ferritic steel stainless ingasetyenziswa kwindawo ene-corrosion ephantsi. Kwimo engqongileyo enomoya opholileyo, intsimbi ye-martensitic stainless kunye nemvula eqinisa intsimbi engenasici ingasetyenziswa ukuba izinto ezifunekayo ukuba zibe namandla aphezulu okanye ukuqina.
Iimpawu kunye nenjongo
Itekhnoloji yomphezulu
Ukwahlula ukutyeba
1. Ngenxa yokuba kwinkqubo yokuqengqeleka koomatshini beplanti yentsimbi, i-roll ikhubazeka kancinane ngenxa yokufudumeza, okukhokelela ekuphambukeni kobunzima beplate eqengqelekayo. Ngokuqhelekileyo, ubukhulu obuphakathi bubhityile kumacala omabini. Xa ulinganisa ubukhulu beplate, inxalenye ephakathi yentloko yepleyiti iya kulinganiswa ngokwemigaqo kazwelonke.
2. Unyamezelo luhlulwe ngokubanzi lube lunyamezelo olukhulu kunye nokunyamezelana okuncinci ngokwentengiso kunye nemfuno yabathengi:
Umzekelo
Ngokuqhelekileyo isetyenziswe amabakala ensimbi engenasici kunye neempawu zezixhobo
1. 304 intsimbi engenasici. Ngenye yezona zinto zisetyenziswa kakhulu i-austenitic stainless steels kunye nenani elikhulu lezicelo. Ilungele ukwenza umzobo onzulu wamalungu abunjiweyo, imibhobho yokuhambisa iasidi, iinqanawa, amalungu olwakhiwo, imizimba yezixhobo ezahlukeneyo, njl.
2. 304L intsimbi engenasici. I-ultra-low carbon austenitic stainless steel iphuhliselwe ukusombulula i-intergranular corrosion tension ye-304 steel stainless ebangelwa yi-Cr23C6 imvula phantsi kweemeko ezithile, ukuxhathisa kwayo kwe-intergranular corrosion kungcono kakhulu kune-304 yentsimbi engenasici. Ngaphandle kwamandla aphantsi, ezinye iipropathi zifana ne-321 yensimbi engenasici. Isetyenziswa ikakhulu kwizixhobo ezinganyangekiyo kwi-corrosion kunye namalungu afuna i-welding kodwa ayinakunyangwa isisombululo, kwaye ingasetyenziselwa ukwenza imizimba yezixhobo ezahlukeneyo.
3. 304H intsimbi engenasici. Kwisebe langaphakathi le-304 yensimbi engenasici, i-carbon mass fraction yi-0.04% - 0.10%, kwaye ukusebenza kokushisa okuphezulu kuphezulu kwi-304 yensimbi engenasici.
4. 316 intsimbi engenasici. Ukongezwa kwe-molybdenum ngesiseko sentsimbi ye-10Cr18Ni12 yenza ukuba intsimbi ibe nokuchasana okulungileyo ekunciphiseni i-corrosion ephakathi kunye ne-pitting. Emanzini olwandle nakwamanye amajelo eendaba, ukuxhathisa kwe-corrosion kungaphezulu kwe-304 yensimbi engenasici, eyona nto isetyenziselwa ukugalela izinto ezinganyangekiyo kwi-corrosion.
5. 316L intsimbi engenasici. Intsimbi ephantsi yekhabhoni ephantsi kakhulu, enokumelana kakuhle ne-intergranular corrosion, ifanelekile ukuvelisa iinxalenye ezishinyeneyo zecandelo lokuwelda kunye nezixhobo, ezifana nezixhobo zokulwa nomhlwa kwizixhobo zepetrochemical.
6. 316H intsimbi engenasici. Kwisebe langaphakathi le-316 yensimbi engenasici, i-carbon mass fraction yi-0.04% - 0.10%, kwaye ukusebenza kweqondo lokushisa eliphezulu kuphezulu kune-316 yensimbi engenasici.
7. 317 intsimbi engenasici. Ukuchasana nokuphosa i-corrosion kunye ne-creep iphezulu kune-316L yensimbi engenasici. Isetyenziselwa ukwenza izixhobo ze-petrochemical kunye ne-organic acid resistant.
8. 321 intsimbi engenasici. I-Titanium stabilized austenitic stainless steel inokutshintshwa yi-ultra-low carbon austenitic steel stainless steel ngenxa yokuphucula ukuxhathisa kwe-intergranular corrosion kunye neempawu ezilungileyo zokushisa eziphezulu. Ngaphandle kwezihlandlo ezikhethekileyo ezifana nobushushu obuphezulu okanye ukuxhathisa kwe-hydrogen corrosion, akukhuthazwa ukuba kusetyenziswe.
9. 347 intsimbi engenasici. Niobium uzinzile austenitic steel stainless. Ukongezwa kwe-niobium kuphucula ukuxhathisa kwe-corrosion intergranular. Ukumelana nokugqwala kwayo kwi-asidi, i-alkali, ityuwa kunye nezinye izinto ezidliwayo ziyafana ne-321 yensimbi engenasici. Ngokusebenza kakuhle kwe-welding, inokusetyenziswa njengezinto zombini ezinganyangekiyo kwi-corrosion kunye nentsimbi ekwazi ukumelana nobushushu. Isetyenziswa ikakhulu kumandla obushushu kunye nemimandla yepetrochemical, efana nokwenza iinqanawa, imibhobho, utshintshiselwano lobushushu, i-shafts, iityhubhu zesithando somlilo kwiziko lamashishini, kunye neethermometers zetyhubhu.
10. 904L intsimbi engenasici. Intsimbi egqibeleleyo ye-austenitic egqwesileyo yintsimbi egqwesileyo ye austenitic engatyiwa yintsimbi eyaqanjwa yiNkampani ye-OUTOKUMPU yaseFinland. I-nickel mass fraction yayo i-24% - 26%, kunye ne-carbon mass fraction ingaphantsi kwe-0.02%. Inokumelana nokugqwesa okugqwesileyo. Inokumelana ne-corrosion elungileyo kwiiasidi ezingezizo i-oxidizing ezifana ne-asidi ye-sulfuric, i-acetic acid, i-asidi ye-formic kunye ne-phosphoric acid, kunye nokuxhathisa okulungileyo kwi-corrosion kunye noxinzelelo lwe-corrosion. Isebenza kwiintlobo ezahlukeneyo ze-asidi ye-sulfuric engaphantsi kwe-70 ℃, kwaye inokumelana nokubola okulungileyo kwi-acetic acid yayo nayiphi na ingxinano kunye nobushushu phantsi koxinzelelo oluqhelekileyo kunye ne-asidi edibeneyo ye-asidi ye-formic kunye ne-acetic acid. Umgangatho wokuqala we-ASMESB-625 wawuchaza njenge-nickel base alloy, kwaye umgangatho omtsha wawuhlelwa njengensimbi engenasici. E-China, kukho kuphela uphawu olufanayo lwentsimbi ye-015Cr19Ni26Mo5Cu2. Abavelisi bezixhobo ezimbalwa zaseYurophu basebenzisa i-904L yensimbi engenasici njengento ebalulekileyo. Ngokomzekelo, ityhubhu yokulinganisa ye-E + H mass flowmeter isebenzisa i-904L yensimbi engenasici, kwaye imeko yeewotshi ze-Rolex isebenzisa i-904L yensimbi engenasici.
11. 440C steel stainless. Ubunzima be-martensitic steel stainless, intsimbi eqinile kunye nensimbi engenasici iyona nto iphezulu, kwaye ubunzima yi-HRC57. Isetyenziswa ikakhulu ukwenza imilomo, iibheringi, iintsimbi zevalvu, izihlalo zevalvu, imikhono, iziqu zevalvu, njl.
12. 17-4PH intsimbi engenasici. Imvula ye-Martensitic eyenza lukhuni intsimbi engatyiwayo, enobulukhuni be-HRC44, inamandla amakhulu, ukuqina kunye nokumelana nomhlwa, kwaye ayinakusetyenziswa kumaqondo obushushu angaphezu kwama-300 ℃. Inokumelana ne-corrosion efanelekileyo kwi-atmosfera kunye ne-asidi edibeneyo okanye ityuwa. Ukuxhatshazwa kwayo kwe-corrosion kufana ne-304 yensimbi engenasici kunye ne-430 yensimbi engenasici. Isetyenziselwa ukwenzaCNC Machining Amacandelo, iincakuba zeinjini yomoya, iintsimbi zevalvu, izitulo zevalvu, imikhono, iziqu zevalvu, njl.
Kumsebenzi wesixhobo, ngokudibanisa nendalo yonke kunye nemiba yeendleko, umyalelo wokukhetha oqhelekileyo we-austenitic stainless steel yi-304-304L-316-316L-317-321-347-904L insimbi engenasici, apho i-317 ingasetyenziswanga ngaphantsi, i-321 ayikho. kucetyiswa, i-347 isetyenziselwa ukumelana nobushushu obuphezulu, i-904L yinto engagqibekanga kumacandelo athile abenzi ngabanye, kwaye i-904L ayikhethwanga ngokusebenzayo kuyilo.
Kuyilo kunye nokukhethwa kwezixhobo, ngokuqhelekileyo kukho amaxesha apho isixhobo sesixhobo sihluke kwizinto eziphathekayo zombhobho, ngokukodwa kwimeko yokusebenza yokushisa ephezulu, ingqalelo ekhethekileyo kufuneka ihlawulwe ukuba ngaba ukhetho lwesixhobo ludibana nobushushu boyilo kunye noxinzelelo loyilo lwe izixhobo zokusebenza okanye imibhobho. Ngokomzekelo, umbhobho ubushushu obuphezulu bentsimbi ye-chromium molybdenum, ngelixa isixhobo sisixhobo esingenasici. Kule meko, iingxaki zinokuthi zenzeke, kwaye kufuneka udibane nomlinganiselo wokushisa kunye noxinzelelo lwezixhobo ezifanelekileyo.
Kwinkqubo yoyilo lwesixhobo kunye nokukhethwa kohlobo, sihlala sidibana nensimbi engenasici yeenkqubo ezahlukeneyo, uchungechunge kunye neempawu. Xa sikhetha uhlobo, kufuneka siqwalasele iingxaki kwiimbono ezininzi ezifana nenkqubo ethile yemidiya, ubushushu, uxinzelelo, iindawo ezigxininisiweyo, ukubola kunye neendleko.
Ixesha lokuposa: Oct-17-2022