Whakaahuatanga:
Ko te Co 21, he tokotoko tahanga i hangaia ki te cobalt e hanga ana i te konukōre waro iti, he austenitic, he pai rawa ngā āhuatanga whakapakeke mahi, he kaha pāmahana teitei, ā, he ātete ki te pānga. He pumau ngā putunga Co 21 i te wā o te huringa wera, he mea pai hei whiringa mō ngā rauemi mate wera. Ka whakamahia ki ngā tinana me ngā nohoanga o te takirere whakahaere mamaoa me te wai. Ka taea te whakamahi ki ngā maitai whakarewa katoa, tae atu ki ngā maitai kowiri tira. He rite ki: Stellite 21, Polystel 21.
NGĀ TONO:
Ngā Takirere Kohu. Ngā Kutikuti Wera. Ngā Mate Hanga. Ngā Mono Wero. Ngā Takirere Matū me te Hinu.
NGĀ TAIPITOPITO O TE HUA:
Te hanganga matū
| Tau | Te hanganga matū (%) | ||||||||
| Co | Cr | W | Ni | C | Mn | Si | Mo | Fe | |
| Kamupene 21 | Para | 27.3 | ≤0.5 | 2 | 0.25 | ≤0.5 | 1.5 | 5.5 | 1.5 |
NGĀ ĀHUATANGA TINO:
| Tau | Kiato | Te Pūwāhi Rewa |
| Kamupene 21 | 8.33 karamu/cm3 | 1295~1435°C |
NGĀ ĀHUATANGA NOA:
| Te pakeketanga | Ātete ki te pakū | Ngā Papa Tāpui | Ātete ki te Waikura | Machilityineab |
| HRC 27~40 | Pai | Maha | Pai | Ngā Utauta Carbide |
NGĀ RAHI PAEREWA:
| Diameter | Diameter | Diameter |
| 1/8” (3.2mm) | 5/32” (4.0mm) | 3/16” (4.8mm) |
Kia mōhio mai, kei te wātea ngā rahi motuhake, ngā whakaritenga mō te tākai rānei mō ngā tono katoa.
NGĀ WHAKATAUTANGA:
AWS A5.21 /ASME BPVC IIC SFA 5.21 ERCoCr-E
AWS A5.13 ECOCR-A:
Koparata 6
Ko ngā irahiko ECoCr-A he hanganga hypoeutectic, he whatunga o te 13% o ngā carbide chromium eutectic e tohatohahia ana i roto i te matrix otinga totoka cobalt-chromium-tungsten. Ko te hua he rauemi me te huinga o te ātete whānui ki te kakahu whakakoi iti te ahotea, me te pakari e tika ana hei ātete i tetahi taumata o te pānga. He pai hoki ngā koranu Cobalt mō te ātete i te kakahu whakarewa-ki-te-konganuku, inā koa i roto i ngā āhuatanga kawenga teitei e ngawari ana ki te whakapataritari. Ko te ihirangi koranu teitei o te matrix he ātete pai ki te waikura, te waikura, me te pupuri pāmahana teitei o te pakeke wera tae atu ki te mōrahi o te 1200°F (650°C). Kāore ēnei koranu e pāngia e te huringa allotropic, nō reira kāore e ngaro ō rātou āhuatanga mena ka tukatukahia te konganuku turanga i muri mai.
E taunakihia ana a Colbalt #6 mō ngā take e haere tahi ana te pakaru me te pāmahana teitei me te waikura, ngā mea e rua rānei. Ko ētahi o ngā whakamahinga noa ko ngā takirere rere o ngā waka me ngā wai, ngā aratohu kani mekameka, ngā wero wera, ngā mata kutikuti, me ngā tīwiri extruder.
AWS A5.13 ECOCR-B:
Koparati 12
He rite te hanganga o ngā irahiko me ngā tokotoko ECoCr-B ki ngā putunga i hangaia mā te whakamahi i ngā irahiko me ngā tokotoko ECoCr-A (Cobalt 6), engari he paku teitei ake te ōrau (tata ki te 16%) o ngā warowaihā. He paku teitei ake te pakeke o te koranu, ā, he pai ake te ātete ki te haehae me te kakahu whakarewa-ki-te-metara. He paku iti ake te ātete ki te pānga me te waikura. Ka taea te mīhini i ngā putunga mā te whakamahi i ngā taputapu warowaihā.
Ka whakamahia ngā irahiko ECoCr-B (Cobalt 12) me ngā irahiko ECoCr-A (Cobalt 6). Ka whakawhirinaki te kōwhiringa ki te whakamahinga motuhake.
AWS A5.13 ECOCR-C:
Koparati 1
He nui ake te ōrau o ngā warowaihā o te ECoCr-C (tata ki te 19%) i ngā putunga i hangaia mā te whakamahi i te ECoCr-A (Cobalt 6) me te ECoCr-B (Cobalt 12) rānei. Inaa, ko te hanganga, he rite ki te kitea o ngā warowaihā hypereutectic tuatahi i roto i te hanganga moroiti. Mā tēnei āhuatanga ka nui ake te ātete kakahu o te koranu me te whakahekenga o te ātete pānga me te waikura. Ko te tikanga hoki o te pakeke teitei ake ka taea te whakaiti i te ia o te ia mā te aroturuki tata i te whakamahana i mua, te pāmahana i waenga i te ara, me ngā tikanga whakamahana i muri.
Ahakoa he ngawari ake ngā putunga cobalt-chromium i ngā pāmahana teitei, i te nuinga o te wā ka kiia he ātete ki te whakamahana. Ka whakamahia ngā hiko ECoCr-C ki te hanga i ngā taonga pēnei i ngā mīhini whakaranu, ngā rotor, ngā wāhi katoa rānei e pāngia ana e te pakū kaha me te pānga iti.
AWS A5.13 ECOCR-E:
Koparati 21
He tino kaha, he ngāwari hoki ngā hikohiko ECoCr-E i ngā pāmahana tae atu ki te 1600°F (871°C). He ātete ngā putunga ki te ru wera, te waikura, me te whakaiti i ngā āhuarangi. I kitea ngā whakamahinga tōmua o ēnei momo koranu i roto i ngā wāhanga miihini rererangi pērā i ngā mata turbine me ngā vanes.
He koranu totoka te putunga, he iti te taumaha-ōrau o te kāpira i roto i te hanganga moroiti. Nō reira, he tino pakari te koranu, ā, ka whakapakeke. He tino ātete ngā putunga ki te pirau, ā, he tino ātete hoki ki te pirau o te cavitation.
Ka whakamahia ngā irahiko ECoCr-E ki ngā wāhi e hiranga ana te ātete ki te ru wera. Ngā whakamahinga noa; he rite ki ngā putunga i hangaia mā te whakamahi i ngā irahiko ECoCr-A (Cobalt 6); ngā rōra ārahi, ngā mate whakaputa wera me te hanga, ngā mata kutikuti wera, ngā mata kokopi, te whakapaipai takirere.
