Kufotokozera:
Co 21, ndodo yopanda kanthu yochokera ku cobalt yomwe imapanga alloy yotsika ya kaboni, yolimba kwambiri, yokhala ndi mphamvu zabwino zolimbitsira ntchito, mphamvu yotentha kwambiri komanso yolimba. Ma depositi a Co 21 amakhala okhazikika panthawi yotenthetsera kutentha, zomwe zimapangitsa kuti akhale chisankho chabwino cha zinthu zotentha. Imagwiritsidwa ntchito pa ma valve owongolera nthunzi ndi madzi ndi mipando. Itha kugwiritsidwa ntchito pazitsulo zonse zowotcherera, kuphatikiza zitsulo zosapanga dzimbiri. Ndi yofanana ndi: Stellite 21, Polystel 21.
NTCHITO:
Ma Vavu a Nthunzi. Zometa Zotentha. Ma Forging Dies. Ma Pulagi Oboola. Ma Vavu a Mankhwala ndi Petrochemical.
TSATANETSATANE WA CHOGULITSA:
Kapangidwe ka mankhwala
| Giredi | Mankhwala opangidwa (%) | ||||||||
| Co | Cr | W | Ni | C | Mn | Si | Mo | Fe | |
| Co 21 | Mbala | 27.3 | ≤0.5 | 2 | 0.25 | ≤0.5 | 1.5 | 5.5 | 1.5 |
KATUNDU WATHUNZI:
| Giredi | Kuchulukana | Malo Osungunuka |
| Co 21 | 8.33g/cm3 | 1295~1435°C |
MAKHALIDWE ACHIWIRI:
| Kuuma | Kukana Kumva Kuwawa | Zigawo Zosungiramo | Kukana Kudzikundikira | Machilitylineab |
| HRC 27~40 | Zabwino | Zambiri | Zabwino | Zida za Carbide |
MAKULI OYENERA:
| M'mimba mwake | M'mimba mwake | M'mimba mwake |
| 1/8” (3.2mm) | 5/32” (4.0mm) | 3/16” (4.8mm) |
Dziwani kuti makulidwe apadera, kapena zofunikira pakulongedza zinthu zimapezeka pazopempha zonse.
ZOFUNIKA:
AWS A5.21 /ASME BPVC IIC SFA 5.21 ERCoCr-E
AWS A5.13 ECOCR-A:
Cobalt 6
Ma electrode a ECoCr-A amadziwika ndi kapangidwe ka hypoeutectic, komwe kali ndi netiweki ya pafupifupi 13% ya eutectic chromium carbides yomwe imagawidwa mu cobalt-chromium-tungsten solid solution matrix. Zotsatira zake ndi zinthu zomwe zimakhala ndi kukana kwathunthu kuwonongeka kochepa, komanso kulimba kofunikira kuti zisamakhudze pang'ono. Ma Cobalt alloys nawonso ndi abwino kwambiri polimbana ndi kuwonongeka kwa chitsulo kuchokera kuchitsulo kupita kuchitsulo, makamaka m'mikhalidwe yolemera kwambiri yomwe ingayambitse gallness. Kuchuluka kwa matrix komwe kumakhala ndi alloy yambiri kumaperekanso kukana bwino dzimbiri, okosijeni, komanso kutentha kwambiri komwe kumasunga kuuma kwa kutentha mpaka 1200°F (650°C). Ma alloy awa sakhudzidwa ndi kusintha kwa allotropic ndipo chifukwa chake samataya katundu wawo ngati chitsulo choyambira chithandizidwa ndi kutentha pambuyo pake.
Colbalt #6 ikulimbikitsidwa pazochitika zomwe kutentha kumakwera komanso pamene dzimbiri limakhudzidwa, kapena zonse ziwiri. Ntchito zina zomwe zimagwiritsidwa ntchito nthawi zambiri ndi ma valve a magalimoto ndi madzimadzi, ma chain saw guides, ma hot punch, shear blades, ndi ma extruder screws.
AWS A5.13 ECOCR-B:
Cobalt 12
Ma electrode ndi ndodo za ECoCr-B ali ndi kapangidwe kofanana ndi ma depositi opangidwa pogwiritsa ntchito ma electrode ndi ndodo za ECoCr-A (Cobalt 6), kupatula kuchuluka kwa ma carbide (pafupifupi 16%). Alloy ilinso ndi kuuma pang'ono komanso kukana bwino kukanda komanso kukana kuvala kwachitsulo ndi chitsulo. Kukana kukhudzana ndi kugwedezeka ndi dzimbiri kumachepetsedwa pang'ono. Ma depositi amatha kupangidwa ndi zida za carbide.
Ma electrode a ECoCr-B (Cobalt 12) amagwiritsidwa ntchito mofanana ndi ma electrode a ECoCr-A (Cobalt 6). Kusankha kudzadalira momwe amagwiritsidwira ntchito.
AWS A5.13 ECOCR-C:
Cobalt 1
ECoCr-C ili ndi kuchuluka kwakukulu (pafupifupi 19%) kwa ma carbide kuposa zomwe zimapangidwa pogwiritsa ntchito ECoCr-A (Cobalt 6) kapena ECoCr-B (Cobalt 12). Ndipotu, kapangidwe kake ndi kamene kamapangitsa kuti ma carbide oyambira a hypereutectic amapezeka mu microstructure. Khalidweli limapangitsa kuti alloy ikhale yolimba kwambiri komanso kuchepetsa kukana kwa mphamvu ndi dzimbiri. Kulimba kwambiri kumatanthauzanso kuti chizolowezi chachikulu chingachepe poyang'anira mosamala njira zotenthetsera, kutentha kwa interpass, ndi njira zotenthetsera pambuyo.
Ngakhale kuti cobalt-chromium deposits imafewa pang'ono kutentha kwambiri, nthawi zambiri imaonedwa kuti siingathe kutenthedwa. Ma electrode a ECoCr-C amagwiritsidwa ntchito kusonkhanitsa zinthu monga zosakaniza, ma rotor kapena kulikonse komwe kumapezeka kuphwanya kwakukulu ndi kugwedezeka kochepa.
AWS A5.13 ECOCR-E:
Cobalt 21
Ma electrode a ECoCr-E ali ndi mphamvu komanso kusinthasintha kwabwino kwambiri kutentha mpaka 1600°F (871°C). Ma depositi amalimbana ndi kutentha, okosijeni, komanso mpweya wochepa. Kugwiritsa ntchito koyambirira kwa mitundu iyi ya alloys kunapezeka mu zigawo za injini ya jet monga masamba a turbine ndi vanes.
Choyikamocho ndi cholimba chowongoka bwino chomwe chili ndi gawo lochepa la carbide mu microstructure. Chifukwa chake, choyikamocho ndi cholimba kwambiri ndipo chimagwira ntchito molimbika. Choyikamocho chili ndi mphamvu yodziyimira payokha komanso chimalimbana ndi kukokoloka kwa cavitation.
Ma electrode a ECoCr-E amagwiritsidwa ntchito pamene kukana kutentha ndikofunikira. Ntchito zodziwika bwino; zofanana ndi zomwe zimapangidwa pogwiritsa ntchito ma electrode a ECoCr-A (Cobalt 6); ma guide roll, hot extrusion ndi forging dies, ma hot shear blades, tong bits, ndi valve trim.
