Mmetụta ọgwụgwọ cryogenic na-emeziwanye ogo carbide cimented

Kemgbe 1980s, a na-eji ọgwụgwọ cryogenic eme ihe nke ọma iji kwalite yacemented carbide.Ọtụtụ ọmụmụ egosila na ọgwụgwọ cryogenic nwere mmetụta dị mma na akụrụngwa akụrụngwa, na-eyi nguzogide, mbelata arụmọrụ, microstructure na ọnọdụ nrụgide fọdụrụ nke carbide cimented.Site na nyocha na-aga n'ihu site n'aka ndị nchọpụta, a nwetawo usoro ụkpụrụ bara uru.na nkwubi okwu nke sayensị.

(1) ọgwụgwọ Cryogenic nwere ike imeziwanye ike na-ehulata, na-eyi nguzogide na ịcha arụmọrụ nkecemented carbide, si otú n'ụzọ dị irè ịgbatị ndụ ọrụ nkengwaọrụ carbide cimented.Site n'ịtụle mmetụta nke usoro ọgwụgwọ cryogenic paramita na akụrụngwa nke cemented carbide, a kwenyere na nsonaazụ kacha mma nke ọgwụgwọ cryogenic anaghị agbanwe n'ahịrị na mbelata okpomọkụ ọgwụgwọ cryogenic yana ịgbatị oge.N'ihi na kpọmkwem akara ule nkecemented carbide, enwere usoro ọgwụgwọ cryogenic kachasị mma, nke nwere ike nweta nsonaazụ kachasị mma na ọnụ ala.

(2) Isi mmetụta nke cryogenic ọgwụgwọ na microstructure nkecemented carbidebụ: ① na-agbanwe mkpụrụ ndụ ọka nke oge siri ike - WC;② na-akwalite mgbanwe martensitic nke njikọ njikọ;③ mma carbide particles (eta frasi) na agbasasị na precipitated na ihe matriks.

(3) Mgbanwe nke martensite nke usoro njikọ, ọdịda nke ezigbo carbides na mmụba nke nrụgide nrụgide na-adịgide adịgide na elu ihe mgbe ọgwụgwọ cryogenic nwere ike imeziwanye ike ma na-eyi nguzogide nke carbide cemented.Ya mere, mmelite nke macroscopic Njirimara nke cemented carbide bụ nsonaazụ nke ngwakọta nke mgbanwe mgbanwe na-ewusi ike na nrụgide nrụgide.