Insimbi engagqwali ye-Powder Metallurgy
Indlela eyinhloko yokucubungula i-powder metallurgy yensimbi engagqwali yile:
Ukucutshungulwa kwensimbi engagqwali okuyimpushana ngokuyinhloko kusebenzisa le mpushana njengendawo eluhlaza, ebese icwiliswa bese icwengwa kusetshenziswa indlela yokwenza. Ukuxutshwa kwempushana, ukucindezela, ukucwilisa, ukuqedela, kanye nokucutshungulwa kwangemuva kuyizinyathelo eziyinhloko ekucutshungulweni kwe-powder metallurgy yensimbi engagqwali. Eminye imisebenzi eminingi iwela ngaphansi kwesigaba sokucutshungulwa kwangemuva, okuhlanganisa ukwenziwa kwemishini, ukupakisha, nokufaka uwoyela.
Kule nqubo ukugeleza, impushana yensimbi engagqwali elungiselelwe iqala ixutshwe ukuze yenze impushana exubile ehlanzekile. Khona-ke impushana ilayishwa esikhunjeni futhi icindezelwe ibe yisimo ngaphansi kwengcindezi ethile. Ishidi eliluhlaza elicindezelwe libe selibekwa endaweni elawulwayo esithandweni se-sintering bese lishiswa ezingeni lokushisa elingaphansi kwendawo yokuncibilika yezinto ze-matrix, okubangela ukuthi izinhlayiya zempushana zithole ukwelashwa okunokushisa okuphezulu futhi zenze ibhondi ye-metallurgical.
Ake sethule inqubo yensimbi engagqwali powder metallurgy processing ngezinyathelo.
- Ukuxuba
Hlanganisa i-powder yensimbi engagqwali kanye nezithasiselo futhi uzivuse ngokuhambisana nezidingo zesikhathi ukuze wenze impushana exutshwe ngobumsulwa obuphezulu.
- Ukubumba
Ngokusho kosayizi, isakhiwo, ukuma kanye nemidwebo yesikhunta somkhiqizo, yicindezele ukuze wenze isikhunta se-carbide, bese ufaka umshini ukuhlola isikhunta, futhi uhlole isampula. Ukwakhiwa kwesikhunta nomjikelezo wokukhiqiza yisonto elilodwa.
- Ukwehlisa amafutha
Ukushisa kwe-degreasing kulawulwa ngama-degree angu-800, futhi isithando somlilo sensimbi ye-vacuum noma i-mesh belt somlilo sisetshenziselwa ukwehlisa. Inhloso ukukhipha okokugcoba okungeziwe.
- I-Sintering
Ekucutshungulweni kwensimbi engagqwali okuyimpushana, i-sintering yinqubo esemqoka. Izakhiwo zokugcina zomzimba nezemishini ezidingwa i-compact eyakhiwe zitholakala ngokufaka i-sintering. I-Sintering ihlukaniswe yaba yi-unit system sintering kanye ne-multi-component system sintering. Ekukhiqizeni kwangempela, ku-sintering yesigaba esiqinile sesistimu yeyunithi kanye nesistimu yezingxenye eziningi, izinga lokushisa le-sintering liphansi kunephuzu lokuncibilika lensimbi ne-alloy esetshenzisiwe.
- Ukwelashwa okulandelayo
Ukwelashwa okulandelayo ngemva kokucwiliswa kungaqedwa ngezindlela ezahlukene ngokuya ngezidingo ezahlukene zomkhiqizo. Isibonelo, ukuqeda, ukugcoba, ukukhanda imishini, ukwelashwa kokushisa kanye ne-electroplating kuvame ukusetshenziswa ekukhiqizeni kwangempela. Ngaphezu kwalokho, eminyakeni yamuva nje, kuye kwakhiqizwa ezinye izinqubo ezintsha, njengokugingqa nokufoja. Lezi zinqubo zingasetshenziswa futhi ekucutshungulweni kwezinto ezisetshenziswayo ze-powder metallurgy emva kokucwiliswa ukuze kutholwe imiphumela emihle yokucubungula.
Izindlela zokuthuthukisa amandla nobulukhuni be-powder metallurgy steel stainless steel
Okokuqala, impushana yensimbi engagqwali yakhiwa ibe umzimba, bese umzimba ubekwa endaweni encishisiwe futhi ugcinwe endaweni yokushisa eshisayo ukuze wenze umzimba oshisayo. Khona-ke, umzimba we-sintered uvezwa emkhathini oqukethe i-carbon futhi ugcinwe endaweni yokushisa ye-carburizing engaphansi kuka-600 ° C, ukuze ikhabhoni ikwazi ukwakha indawo ye-carburized ebusweni nangaphakathi komzimba osikiwe. Ngale ndlela, ubulukhuni namandla we-powder metallurgy insimbi engagqwali ingathuthukiswa ngokusebenzisa indawo ye-carburized, futhi ngenxa yokuthi izinga lokushisa lokushisa lingaphansi kuka-600 ° C, ukusabela phakathi kwe-chromium ne-carbon kungavinjelwa, ukuze ukumelana nokugqwala okuhle kungagcinwa.
Amabanga Abalulekile Ensimbi Engagqwali ku-Powder Metallurgy
- I-Austenitic Stainless Steels:
- I-SS-303:
- Izakhiwo: Amandla aphezulu nobulukhuni, ukumelana nokugqwala okuhle, okungewona uzibuthe.
- Izinhlelo zokusebenza: Okuncanyelwayo ezingxenyeni ezidinga umshini wesibili obanzi.
- I-SS-304:
- Izakhiwo: Amandla amahle nokumelana nokugqwala; Ibanga lenhloso jikelele.
- Izinhlelo zokusebenza: Isetshenziswa kakhulu ezimbonini ezahlukahlukene ngenxa yokuguquguquka kwayo.
- I-SS-316:
- Izakhiwo: Ukumelana nokugqwala okuphezulu uma kuqhathaniswa ne-SS-303; okungewona uzibuthe.
- Izinhlelo zokusebenza: Inketho yokuqala yezinhlelo zokusebenza zenhloso evamile, ikakhulukazi ezindaweni ezibolayo.
-
17-4 PH
- Izakhiwo: Amandla aphezulu, ukumelana nokugqwala okuhle kakhulu, namandla okwenza lukhuni ngokwelashwa kokushisa (ukuqina kwemvula).
- Izinhlelo zokusebenza: Izingxenye ze-Aerospace, izinsiza zezokwelapha, nezingxenye zemishini ezisebenza kahle kakhulu ezidinga amandla nokumelana nokukhathala.
- I-SS-303:
- I-Ferritic Stainless Steels:
- I-SS-430:
- Izakhiwo: I-Magnetic enokuqukethwe okuphezulu kwe-chromium; okuqukethwe kwekhabhoni ephansi kuthuthukisa ukumelana nokugqwala.
- Izinhlelo zokusebenza: Ilungele izinhlelo zokusebenza zezimoto nezasekhishini.
- I-SS-430:
- I-Martensitic Stainless Steels:
- I-SS-410 ne-SS-420:
- Izakhiwo: Uzibuthe, amandla aphezulu, kodwa ukumelana nokugqwala okuphansi uma kuqhathaniswa namamaki e-austenitic.
- Izinhlelo zokusebenza: Ivamise ukusetshenziswa ekusikeni nakwezinye izinhlelo zokusebenza ezidinga ubulukhuni.
- I-SS-410 ne-SS-420:
- I-Duplex Stainless Steels:
- Lezi zihlanganisa izakhiwo ze-austenitic kanye ne-ferritic, zinikeza amandla aphezulu kanye nokumelana okuthuthukisiwe kokucindezeleka kokuqhekeka kokugqwala.