Kanema wa Zamalonda
Mafotokozedwe Akatundu
Timagwiritsa ntchito ukadaulo wowotcherera wa arc pamwamba kuti ukhale wosanjikiza wosasunthika kwambiri pazitsulo wamba wofatsa. Kuuma kwa mankhwalawa mu nkhope yogwira ntchito ndi HRC55-62. Zimaphatikiza kulimba kwa chromium carbide ndi kulimba kwa mbale yachitsulo. Itha kupindika, kuwotcherera kapena bawuti kulumikizidwa pansi pamitundu yosiyanasiyana yogwirira ntchito.
Za Chinthu Ichi
Chingwe cholimba cha nkhope ndi mbale yoyambira zimaphatikizidwa kukhala chidutswa chimodzi. Chophimba cha chromium carbide ndi chosalala komanso chosalala chokhala ndi ming'alu yaying'ono. Timachitcha kuti stress yotulutsidwa ndi micro crack. Itha kuchepetsa kupsinjika kotsalira ndi mapindikidwe panthawi yokutira. Palibe chikoka cha ntchito yosamva kuvala. Chophimba cholimba chimakhala ndi aloyi yapamwamba ya chromium yokhala ndi Mo, W, V, B, Nb, Ti, ndi zina zotero. Kotero kuti mbale yathu yosamva kuvala imapereka eutectic + M7C3 metallographic kuti ikhale ndi kutentha kwakukulu, mphamvu yamphamvu kwambiri komanso ntchito yosamva kuvala.
Tsatanetsatane wa Zamalonda
Chingwe cholimba cha nkhope ndi mbale yoyambira zimaphatikizidwa kukhala chidutswa chimodzi. Chophimba cha chromium carbide ndi chosalala komanso chosalala chokhala ndi ming'alu yaying'ono. Timachitcha kuti stress yotulutsidwa ndi micro crack. Itha kuchepetsa kupsinjika kotsalira ndi mapindikidwe panthawi yokutira. Palibe chikoka cha ntchito yosamva kuvala. Chophimba cholimba chimakhala ndi aloyi yapamwamba ya chromium yokhala ndi Mo, W, V, B, Nb, Ti, ndi zina zotero. Kotero kuti mbale yathu yosamva kuvala imapereka eutectic + M7C3 metallographic kuti ikhale ndi kutentha kwakukulu, mphamvu yamphamvu kwambiri komanso ntchito yosamva kuvala.