Inkcazo:
I-Co 21, intonga engenanto esekelwe kwi-cobalt eyenza i-alloy ye-austenitic ephantsi, eneempawu ezintle zokuqina komsebenzi, amandla aphezulu obushushu kunye nokumelana nempembelelo. Iidiphozithi ze-Co 21 zizinzile ngexesha lokujikeleza kobushushu, nto leyo eyenza ukuba zibe lukhetho olufanelekileyo kwizixhobo ezishushu. Isetyenziswa kwimizimba yevalvu yokulawula umphunga kunye nolwelo kunye nezihlalo. Ingasetyenziswa kuzo zonke iintsimbi ezidityaniswayo, kuquka neentsimbi ezingenasici. Ilingana ne: Stellite 21, Polystel 21.
ISICELO:
Iivalvu zomphunga. Iisheya ezishushu. Iidiza zokubumba. Iiplagi zokubhoboza. Iivalvu zeekhemikhali kunye neepetrochemical.
IINKCUKACHA ZEMVELISO:
Ukwakheka kweekhemikhali
| Ibanga | Ukwakheka kweekhemikhali (%) | ||||||||
| Co | Cr | W | Ni | C | Mn | Si | Mo | Fe | |
| I-Co 21 | I-Bal | 27.3 | ≤0.5 | 2 | 0.25 | ≤0.5 | 1.5 | 5.5 | 1.5 |
IIPROPATHI ZOKUPHILA:
| Ibanga | Uxinano | Indawo yokunyibilika |
| I-Co 21 | 8.33g/cm3 | 1295~1435°C |
IIMPAWU EZIQHELEKILEYO:
| Ukuqina | Ukumelana nokurhawuzelelwa | Iileya zeDiphozithi | Ukumelana nokugqwala | IMachilitylineab |
| I-HRC 27~40 | Kulungile | Ezininzi | Kulungile | Izixhobo zeCarbide |
UBUNGAKANANI OBUQHELEKILEYO:
| Ububanzi | Ububanzi | Ububanzi |
| 1/8” (3.2mm) | 5/32” (4.0mm) | 3/16” (4.8mm) |
Qaphela ukuba ubungakanani obukhethekileyo, okanye iimfuno zokupakisha ziyafumaneka kuzo zonke izicelo.
IINKCUKACHA:
I-AWS A5.21 /ASME BPVC IIC SFA 5.21 ERCoCr-E
I-AWS A5.13 ECOCR-A:
I-Cobalt 6
Ii-electrode ze-ECoCr-A zibonakaliswa yisakhiwo esingena-eutectic, esinenethiwekhi ye-13% ye-eutectic chromium carbides esasazwe kwi-matrix yesisombululo esiqinileyo se-cobalt-chromium-tungsten. Isiphumo sisixhobo esinomxube wokumelana ngokupheleleyo nokuguguleka okuphantsi koxinzelelo, kunye nokuqina okufunekayo ukumelana nenqanaba elithile lempembelelo. Ii-alloys zeCobalt nazo zilungile ngokwemvelo ekumelaneni nokuguguleka kwesinyithi-ukuya kwisinyithi, ngakumbi kwiimeko zomthwalo ophezulu ezinokuthi zitsale. Umxholo we-alloy ephezulu kwi-matrix ukwanika ukumelana okuhle kakhulu nokugqwala, i-oxidation, kunye nokugcinwa kobushushu obuphezulu bobunzima obushushu ukuya kuthi ga kwi-1200°F (650°C). Ezi alloys azichaphazeleki kutshintsho lwe-allotropic kwaye ke ngoko azilahlekelwa ziimpawu zazo ukuba isinyithi esisisiseko sinyangwa emva koko.
I-Colbalt #6 iyacetyiswa kwiimeko apho ukuguguleka kuhamba namaqondo obushushu aphezulu kwaye apho kukho ukugqwala, okanye zombini. Ezinye zeendlela eziqhelekileyo zokusetyenziswa ziivalvu zokuhamba kweemoto kunye nolwelo, izikhokelo zesarha yetyathanga, ii-hot punches, ii-shear blades, kunye nezikrufu ze-extruder.
I-AWS A5.13 ECOCR-B:
I-Cobalt 12
Ii-electrode kunye neentonga ze-ECoCr-B ziyafana ngokubunjwa kwazo needipozithi ezenziwe kusetyenziswa ii-electrode kunye neentonga ze-ECoCr-A (Cobalt 6), ngaphandle kwepesenti ephezulu kancinci (malunga ne-16%) yee-carbides. I-alloy ikwanayo nobunzima obuphezulu kancinci kunye nokumelana okungcono kokurhawuzelela kunye nokuguguleka kwesinyithi. Ukumelana nempembelelo kunye nokugqwala kwehliswa kancinci. Iidipozithi zinokucutshungulwa ngezixhobo ze-carbide.
Ii-electrode ze-ECoCr-B (Cobalt 12) zisetyenziswa ngokutshintshana nee-electrode ze-ECoCr-A (Cobalt 6). Ukhetho luya kuxhomekeka kwisicelo esithile.
I-AWS A5.13 ECOCR-C:
I-Cobalt 1
I-ECoCr-C inepesenti ephezulu (malunga ne-19%) yee-carbides kuneediphozithi ezenziwe kusetyenziswa i-ECoCr-A (Cobalt 6) okanye i-ECoCr-B (Cobalt 12). Enyanisweni, ukwakheka kwayo, kukuba ii-carbides eziphambili ze-hypereutectic zifumaneka kwisakhiwo esincinci. Olu phawu lunika i-alloy ukumelana okuphezulu kokuguguleka kunye nokunciphisa impembelelo kunye nokumelana nokugqwala. Ukuqina okuphezulu kuthetha ukuba ukuthambekela okukhulu kunokunciphisa ngokujonga ngokusondeleyo iindlela zokufudumeza kwangaphambili, ubushushu obuphakathi, kunye neendlela zokufudumeza emva kobushushu.
Nangona iidipozithi ze-cobalt-chromium zithamba kancinci xa kushushu kakhulu, zihlala zithathwa njengezingashukumiyo. Ii-electrode ze-ECoCr-C zisetyenziselwa ukwakha izinto ezifana nee-mixers, ii-rotors okanye naphi na apho kudityaniswe khona ukukrala okuqatha kunye nempembelelo ephantsi.
I-AWS A5.13 ECOCR-E:
I-Cobalt 21
Ii-electrode ze-ECoCr-E zinamandla amahle kakhulu kwaye ziyakwazi ukuguquguquka kumaqondo obushushu afikelela kwi-1600°F (871°C). Iidiphozithi ziyamelana nokutshayiswa kobushushu, ukuxokozela, kunye nokunciphisa imozulu. Ukusetyenziswa kwasekuqaleni kwezi ntlobo zee-alloys kwafunyanwa kwiindawo zeenjini zejethi ezifana nee-turbine blades kunye nee-vanes.
Idiphozithi yi-alloy eqinileyo elungisiweyo ene-carbide phase ephantsi kakhulu kwi-microstructure. Ngenxa yoko, i-alloy iqinile kakhulu kwaye iya kusebenza nzima. Iidiphozithi zinokumelana okuhle kakhulu nokuqhekeka kwe-galling kwaye ziyakwazi ukumelana nokukhukuliseka kwe-cavitation.
Ii-electrode ze-ECoCr-E zisetyenziswa apho ukumelana noxinzelelo lobushushu kubalulekile. Ukusetyenziswa okuqhelekileyo; okufana noko kweendawo ezidityanisiweyo ezenziwe kusetyenziswa ii-electrode ze-ECoCr-A (Cobalt 6); ii-guide rolls, ii-hot extrusion kunye nee-forging dies, ii-hot shear blades, ii-tong bits, i-valve trim.
