Mukawona mawu osaka ngati '17 4 ph investing casting', ndizosavuta kuganiza kuti ndi zolemba zina chabe. M'malo mwake, ndi chidule cha zovuta zonse ndi zisankho pa shopu. Ogula ambiri kapena mainjiniya ocheperako amaganiza kuti 17-4 PH, kapena 17-4PH chitsulo chosapanga dzimbiri, ndi njira imodzi yokha yomwe ikufunika mphamvu zambiri komanso kukana kwa dzimbiri. Nthawi zambiri amaphonya mkhalidwe wovuta wa H-chinthu chamankhwala cha kutentha-chimene chiri chirichonse. Ndawonapo zisindikizo zikubwera zikungonena kuti 17-4 PH kuponya ndalama, ndipo ndipamene kukambirana kwenikweni, ndipo nthawi zina mutu umayamba.
Chovuta Chachikulu: Zonse Zili Zokhudza Chikhalidwe H900, H1025, kapena H1100
Simumangoponya 17-4 PH; mumaponyera ndiyeno mumatenthetsa kuti muzitha kupeza zomwe mukufuna. Uwu ndiye mpanda waukulu woyamba mumsewu. Mkhalidwe wa as-cast ndi yankho annealed (Condition A). Ndi yofewa, yokhoza kusinthasintha, koma ilibe mphamvu zodziwika bwino za mvula. Matsenga amachitika pambuyo pa chithandizo cha kutentha kwa ukalamba wochepa. H900 imakupatsani mphamvu zolimba kwambiri, kukankhira kupitirira 190 ksi, koma ndi yolimba kwambiri komanso chimbalangondo pamakina. H1150 imapereka kulimba kwabwinoko komanso kukana dzimbiri, koma mumasinthanitsa gawo lalikulu lamphamvu yamphamvuyo.
Kusankha mkhalidwe wolakwika wa pulogalamuyo ndi cholakwika chambiri, chokwera mtengo. Ndikukumbukira pulojekiti yamagulu apanyanja pomwe wopanga, wokhazikika pamphamvu, adatchula H900. Gawoli linapambana mayesero onse a labu koma linalephera m'munda chifukwa cha kuwonongeka kwa corrosion mu chikhalidwe chovuta kwambiri. Tinayenera kukonzanso ndikuwotchanso gulu lonselo ku H1150, lomwe linathetsa vuto lamunda koma linachedwetsa ntchitoyi ndi miyezi. Kodi tikuphunzirapo chiyani? Kukana kwa dzimbiri kwa 17-4 PH kumadalira kwambiri mkhalidwe, osati nambala yokhazikika.
Apa ndipamene kugwira ntchito ndi maziko omwe amamvetsetsa zitsulo, osati kungoumba, sikungakambirane. Sitolo ngati Malingaliro a kampani Qingdao Qiangsenyuan Technology Co., Ltd., ndi zaka makumi atatu kuponya ndalama ndi makina, amapeza izi. Iwo sakanangotsanulira zitsulozo ndi kuzitumiza izo. Njira yawo ingaphatikizepo ndondomeko yochizira kutentha kwapambuyo pake, ndipo atha kuyika chizindikiro chosakwanira msanga. Mutha kuwona njira yawo yopangira zida, kuphatikiza ma aloyi apadera, patsamba lawo tsngtaocnc.com. Ndi chidziwitso chophatikizika chopanga ndi kukonza katenthedwe kotsatira komwe kamalekanitsa wopereka magawo ndi mnzake wa uinjiniya.
Kupeza, Kudyetsa, ndi Nkhondo Yochepetsera
Kuchokera kuzitsulo kupita ku nkhungu, 17-4 PH imapereka zovuta zake zoponya. Ili ndi kulimba kwakukulu kocheperako. Ngati kachitidwe kanu ka geting ndi riser (feeder) sanapangidwe mwangwiro, mupeza shrinkage porosity, nthawi zambiri m'malo omaliza kuti olimba ngati magawo okhuthala kapena maphatikizidwe. Ichi si chilema chapamwamba chomwe mungathe kuchipukuta; ndi zamkati ndipo adzapha mbali ya makina umphumphu, makamaka pansi kutopa Kutsegula.
Taphunzira izi kudzera munjira yowawa, yamagulu ang'onoang'ono yopanga mabulaketi oyendetsa ndege. Geometry inali ndi makulidwe ovuta, osagwirizana ndi khoma. Zitsanzo zowombera poyamba zinkawoneka bwino. Kuwunika kwa X-ray, komabe, kunavumbulutsa maukonde a micro-shrinkage pakatikati pakatikati. Mipiringidzo yokhazikika yomwe idadulidwa kuderali idalephera mochititsa chidwi pansipa. Nkhani yake? Mawerengedwe athu anthawi zonse odyetsa, omwe adagwira bwino ntchito 316 zosapanga dzimbiri, anali osakwanira kulimba kwa 17-4. Tidayenera kukonzanso mawonekedwe onse amitengo, ndikuwonjezera zokwera kwambiri ndikugwiritsa ntchito ma exothermic padding kuti chitsulo chikhale chotentha kwambiri m'malo ovuta. Zinawonjezera kutayika kwa zokolola pamtengo uliwonse koma zidapulumutsa magawo.
Ili ndi gawo lina lomwe chidziwitso ndi zinthu zenizeni zimafunikira. Dongosolo lokhazikika la chigoba cha chipolopolo lingafunike kusinthidwa-mwina mawonekedwe ena a slurry kapena stucco-kuti athe kuthana ndi kutentha kwa aloyiyi. A generic chipolopolo nkhungu kuponyera ndondomeko sikokwanira; iyenera kukhala njira yokonzekera zitsulo zowumitsa mvula.
The Machining Interlude: Osachipeputsa Icho
Izi ndi zoona zenizeni pafupifupi 17-4 PH iliyonse yoyika ndalama idzakumana nayo: ikufunika kukonza. Ndi magawo ochepa kwambiri omwe ali ndi mawonekedwe a ukonde. Muli ndi kuchotsedwa kwa zipata, kumalizitsa pamwamba, ndi kukonza makina ofunikira. Ndipo monga tafotokozera, kuuma kwa makina kumasiyana mosiyanasiyana ndi chikhalidwe. Kuchiza Zofewa A ndi zowongoka, koma mumatenthetsa, ndipo gawolo lidzasokoneza. Nthawi zina zodziwikiratu, nthawi zina ayi.
Njira ina ndikuyika makina omwe ali owumitsidwa (mwachitsanzo, H900). Izi ndizokwera mtengo, zochedwa, komanso zankhanza pazida. Mukuyang'ana makhazikitsidwe okhwima a CNC, premium carbide kapena zida za CBN, ndi mitengo yotsika. Mtengo wamtengo wapatali umasintha kwathunthu. Ichi ndichifukwa chake QSY's kuphatikiza zopereka za kuponya ndalama ndi CNC makina pansi pa denga limodzi ndi phindu lomveka. Amatha kukonza ndondomeko yonse yopanga zinthu mwathunthu. Kodi amapanga makina ovuta mu Condition A, kusiya katundu, kutentha, kenako kumaliza makina? Kapena amaponyera pafupi ndi ukonde ndikuwumitsa zonse pambuyo poumitsa? Chisankho chimenecho chimakhudza mtengo, nthawi yotsogolera, ndipo chofunikira kwambiri, gawo lomaliza la geometry kulolerana.
Ndakhala ndikuchita nawo ntchito zomwe makinawo adalimidwa kusitolo ya anthu ena osadziwika bwino ndi 17-4. Zotsatira zake zidachotsedwa chifukwa chosakwanira bwino pamwamba, ming'alu yaying'ono yopangitsidwa ndi makina ankhanza, komanso kusalongosoka bwino. Kubweretsa unyolo wonse wamtengo wapatali, kapena masitepe ovuta kwambiri opangira kutentha-kutentha, pansi paulamuliro wogwirizana ndiko kuchepetsa chiopsezo chachikulu.
Kupeza Zinthu ndi Kutsata: Sikuti Onse 17-4 Ndi Ofanana
Izi zitha kumveka ngati zofunikira, koma mtundu umayamba ndi kusungunuka. 17-4 PH ndi dzina la UNS (S17400), koma chemistry yeniyeni yomwe ili mkati mwake imatha kukhudza kutayika, kuuma, ndi zomaliza. Zinthu monga mkuwa, niobium, ndi kusanja kwa chromium ndi faifi tambala ziyenera kulamulidwa mwamphamvu. Malo osungunula malo ake omwe ali ndi certified bar kapena kubwezeretsa pansi pa malo olamulidwa ndi osiyana ndi kugula ma ingots pamsika.
Pantchito iliyonse yovuta, mumafunika malipoti athunthu a chemistry ndi malipoti oyesera amakina kuchokera kumalo otentha enieni. Izi ndizomwe zimachitikira akatswiri. Kutha kupereka mulingo uwu wa zolembedwa ndi chizindikiro chabata chazovuta za foundry. Poyang'ana wogulitsa ngati amene watchulidwa, ntchito yawo yayitali imasonyeza kuti apanga machitidwe a izi. Pazaka zopitilira 30, mutha kupeza zinthu zosasinthika komanso kuyang'anira zambiri, kapena simukhala mubizinesi yotumikira makasitomala akumafakitale.
Kuphatikiza apo, pamagawo am'mlengalenga, chitetezo, kapena magalimoto ochita bwino kwambiri, chofunikira nthawi zambiri chimafikira pakuwunika kukula kwa tirigu, kuyang'anira ma radiographic molingana ndi miyezo inayake (monga ASTM E192), komanso kuyesa kwa dzimbiri. Kutchulapo 17-4 PH kuyika ndalama ndikungotsegulira kwa chikalata chachitali chaukadaulo chomwe chimayang'anira zonsezi.
Nthawi Yogwiritsa Ntchito, ndi Nthawi Yoyang'ana Kwina
Ndiye, zitatha zonsezi, kodi kuponya kwa ndalama kwa 17-4 PH kumamveka kuti? Ndiwopambana kwambiri pamagawo omwe amafunikira kuchuluka kwamphamvu kwa kulemera, kutopa kwabwino, komanso kukana kwa dzimbiri m'malo ocheperako kuposa omwe angafune super austenitic kapena nickel-based alloy. Ganizirani masamba a turbine, zoyika pampu, ma valve, zida zamfuti, ndi zida zopangira opaleshoni. Imadzaza kagawo kakang'ono pakati pa 300-mndandanda wosapanga dzimbiri komanso wokwera mtengo kwambiri zopangidwa ndi cobalt kapena zitsulo zopangidwa ndi nickel.
Koma si kukweza konsekonse. Ngati mbali yanu ili ndi zofunikira za dzimbiri (monga kumizidwa nthawi zonse m'madzi amchere), chitsulo chosapanga dzimbiri chowirikiza kapena aloyi wapamwamba wa nickel angakhale bwino. Ngati mukufuna kulimba kwambiri kutentha kwa cryogenic, yang'anani kwina. Ngati geometry ndi yovuta kwambiri kotero kuti kupotoza kwa kutentha sikungatheke, mutha kukakamizidwa kugwiritsa ntchito makina osasunthika osasunthika a austenitic m'malo mwake.
Chofunikira kwambiri pazaka zothana ndi izi ndikuti kuyika kwa ndalama kwa 17-4 PH ndi njira, osati zinthu. Zimafuna kulemekeza kuyanjana pakati pa zitsulo, zomangamanga zoyambira, sayansi yamankhwala otentha, ndi makina olondola. Kuchikonza kumamveka ngati chigonjetso chaching'ono nthawi zonse. Kulakwitsa ndi maphunziro okwera mtengo. Kusiyanitsa nthawi zambiri kumakhala posankha abwenzi omwe amawona unyolo wonse, osati ulalo wawo umodzi momwemo.
