He aha te kaupapa o te kuhu parahi ki roto i te waahanga PM, me pehea te whakatutuki?

Ko nga waahanga he konukura whakauru mo etahi take.Ko etahi o nga hua e hiahiatia ana ko te whakapai ake i te kaha tensile, te pakeke, te paanga, me te ngawari.Ko nga waahanga kua whakauruhia ki te parahi ka nui ake te kiato.

Ko etahi atu take ka kowhiria e nga kaihoko te kuhu parahi hei whakapai ake i te kakahu, hei aukati ranei i te rere o te hau/ hau i roto i tetahi waahanga maiengi i te pāmahana e kore e taea e te kapia.I etahi wa ka whakamahia te whakauru parahi ki te whakarei ake i nga ahuatanga miihini o te maitai PM;ka waiho e te parahi he mahinga miihini ngawari ake.

Anei te mahi o te whakauru parahi:

Ko te hanganga turanga o te waahanga he tino mohio, e whakamahia ana hei whakatau i te nui o te porosity tuwhera.Ka tohua te rahi o te parahi e rite ana ki te nui o te porosity hei whakaki.Ka whakakiia e te konukura te porosity i te wa o te mahi sintering (i nga mahana i runga ake i te wera whakarewa o te parahi) ma te whakanoho noa i te parahi ki te waahanga i mua i te whakahiato.Ko te> 2000°F te pāmahana sintering ka taea e te parahi whakarewa te rere ki roto i te porosity wae na roto i te mahi capillary.Ka oti te whakamau i runga i te kawe (hei tauira, te pereti uku) kia mau tonu te parahi ki runga i te waahanga.Ka whakamataohia te wahanga, ka whakakorikori te parahi i roto i te hanganga.

Whakaahua Runga(matau): Ko nga waahanga kua whakahiatohia me nga parapara parahi kua reri mo te tarai.(Whakaahua na Atlas Pressed Metals)

Whakaahua Raro(matau): Hanganga moroiti o tetahi waahanga e whakaatu ana i te kuhu o te parahi i te porosity tuwhera.(Whakaahua na Takuta Craig Stringer - Atlas Pressed Metals)


Wā tuku: Sep-07-2019