Ukubumba umjovo wensimbi⎮I-Powder Metallurgy⎮Mayelana NATHI

• Ukwakhiwa kwempushana kuyisigaba sesibili se-powder metallurgy. Kuyinqubo lapho i-powder exekethile yenziwa ngamabhilidi anesimo esithile, ubukhulu, ukuminyana namandla.

• Yenza impushana ngenqubo yokwenza ukuze uthole ukuma okunikiwe namandla omzimba oyimpushana, obizwa ngokuthi i-compact.

Kunezindlela eziningi zokwenza impushana, ngaphezu kwendlela evamile yokubumba, ezinye zihlukaniswa njengezindlela ezikhethekile zokwakha. Ukwakhiwa kwe-Die kuyindlela eyisisekelo kakhulu.

ukuntula ukwakheka komshini wokunyathelisa - ukukhishwa kwe-pulp - i-sintering ekhululekile

Izinqubo ezilandelayo zisetshenziselwa ukubumba izinto: ingcindezi, ukufa, ukushisa, isostatic, rolling, centrifugal, extrusion, kanye nokuqhuma.

• Amasu okubumba akhethekile;

• ukubumba okuvamile;

•ukwelashwa ngaphambi kwesikhathi;

•ithiyori yokucindezelwa

Ukwelashwa kusengaphambili kwempushana kuhilela ukuthungathwa, ukuhluza, ukuxutshwa, ukuhlanganisa, nokwengeza izinto zokugcoba, phakathi kwezinye izinto.

Ukwakheka kwempushana ejwayelekile

I-Die forming iyindlela esetshenziswa kakhulu yokwenza impushana. Ibhekisela endleleni yokulayisha i-powder exutshwe ngokulinganayo ibe isikhunta esivaliwe ngenani elithile ekamelweni lokushisa, bese uyicindezela ku-billet ngokucindezela kweyunithi ethile ngomshini wokunyathelisa.

Le nqubo yokwenza ngokuvamile iqukethe izinyathelo ezilandelayo: i-powder enesisindo, i-powder yokugcwalisa, ukucindezela, ukucindezela ukubamba kanye nokuhlubula.

Isimiso sokubumba

(1) Sebenzisa isikhunta ukuze wenze impushana ibe yifomu oyifunayo.

(2) Nikeza umzimba ngosayizi wawo onembile.

(3) Cacisa i-porosity edingekayo ye-billet kanye nohlobo lwe-porosity.

(4) Nikeza umzimba ngenani elifanele lamandla nokuminyana ukuze uphathwe.

Indlela yokucindezela

Ukucindezela okukodwa: i-concave iyafa futhi i-punch ephansi ayinyakazi, futhi i-punch ephezulu icindezela unidirectional.

Izindlela ezimbili ngaphambilii-ssing: i-concave die ilungisiwe, futhi i-punch ephezulu nephansi icindezelwa ngesikhathi esifanayo nezingcindezi ezilinganayo neziphambene.

Ukucindezela okuntantayo: i-punch ephansi ilungisiwe, i-concI-ave die isekelwa yiziphethu, amasilinda, amasilinda, njll., futhi ingantanta ngemuva kokucindezelwa.

Inqubo yokucindezela

Inqubo yokucindezela ingahlukaniswa izigaba ezine:

(1) Izinhlayiya zempushana ziyanyakaza, izimbotshana ziyancipha, futhi izinhlayiya ziyampintshana;

(2) Impushana icindezelwa ngokuqinile, futhi izinhlayiya ezincane zigcwaliswa esikhaleni phakathi kwezinhlayiya ezinkulu, futhi izinhlayiya ziqala ukukhubazeka;

(3) Ingxenye ye-concave ne-convex ebusweni bezinhlayiya zempushana iyacindezelwa futhi ifakwe esimweni sokuxhumana esiqinile;

(4) Umsebenzi wokuqina wezinhlayiya ze-powder ukuya esimweni somkhawulo, ngokuqhubekayo ukwandisa ukucindezela, izinhlayiya ze-powder zibhujiswa futhi i-crystallization icwengisisiwe.

Ubudlelwano phakathi kokuqina kwempushana yensimbi nokucindezela kokucindezela

Umthelela wokuhlanzeka kwempushana

Ngenxa yenqubo ehlukene yokwenza i-powder, ukuhlanzeka kwe-powder akufani, futhi i-powder iqukethe inani elithile lokungcola. Ukungcola okukuyimpushana ngokuvamile kusesimweni sama-oxide ensimbi.

I-metal oxide powder iqinile kakhulu futhi i-brittle, futhi isakazwa ngokuyinhloko ebusweni be-metal powder, okwandisa ukumelana nokucindezela futhi konakalise ukusebenza kokucindezela.

Ukwenziwa kwesakhiwo sezingxenye ezakha impushana

1. Ukwenza ukwenza isikhunta kanye nokubumbana kube lula, zama ukukhetha idizayini eqondile, elinganayo egwema ukwehluka okwedlulele esigabeni kanye nemigodi emincane, indawo eyindilinga, njll.

2. Gwema izindonga zasendaweni ezincane ukuze kube lula ukuhlangana kwempushana nokuvimbela imifantu.

3. Gwema ama-grooves nezimbobo ezindongeni eziseceleni ukuze kube lula ukuhlangana noma ukunciphisa amabhlogo asele.

4. Gwema ukukhulisa indawo ephambanayo eduze nendawo yokucindezela ukuze kube lula ukuminyana. Amakhona kufanele ayindilinga lapho kuhlangana khona udonga ngalunye ukuze kube lula ukucinana futhi kugwenywe ukugxilisa ingqondo.

I-Powder Forming Component

Uhlobo lokuqala lwezingxenye: ukucindezelwa okukodwa, udonga oluncane, ukwakheka okungahleliwe, ingxenye yetafula (ukujiya kodonga ngokuvamile kufika ku-6.35mm)

Uhlobo lwesibili lwengxenye: ingxenye yetafula, noma yikuphi ukuphakama nokuma, kufanele kube izingxenye ezicindezelayo eziqondiswe kabili.

Ingxenye III: Ingxenye yamathebula amabili, anoma yikuphi ukuphakama nokuma, okufanele icindezelwe nhlangothi zombili

Uhlobo lwesine lwezingxenye: Ithebula elinamathebula amaningi, noma ikuphi ubude nokuma, kufanele kusetshenziswe izingxenye ezicindezelayo zokugxiviza eziphindwe kabili