Paunobaya '17 4 investment casting' mubhawa yekutsvaga, unenge uchitsvaga mashiripiti bara-chikamu chakasimba, chisingaite ngura, uye chakaomarara, zvese nemutengo wakanaka. Chokwadi, kubva pabhenji rangu, chakashata. 17-4 PH isina tsvina chinhu chakanakisa, asi kuibatanidza neyekudyara yekudyara maitiro haingori bhokisi rekutarisa. Ndakaona mifananidzo yakawandisa painotsanangurwa nerote, pasina nhaurirano chaiyo pamusoro pemamiriro ekupisa kupisa (H900, H1025, nezvimwewo) post-casting, iyo inonyanya kuraira michina yaunowana. Ndiko kunowanzotanga kubviswa.
Kukwezva uye Kukurumidza Caveat
Vimbiso hairambiki. Investment casting inoita kuti iwe ugadzire iwo akaomarara, ari padyo-net-shape geometries zvingave zvinotyisa kumichina kubva kubhawa stock, kunyanya mune yakaoma zvinhu senge 17-4. Funga ma turbine blades, midziyo yekuvhiya, kana miviri yevharuvhu ine mapassage emukati. Iyo tsvina ishoma, iyo kune inodhura alloy, inokosha.
Asi heino yekutanga inoshanda hiccup: fluidity. 17-4 mukunyungudutswa kwayo haiyerere se 304 kana 316. Kana dhizaini iine zvikamu zvakatetepa zvakanyanya kana kuti ichida kuzadza chakanyatsojeka, chakapfava mold, unogona kusangana nekumhanyisa kana kuvharwa kunotonhora. Isu takadzidza izvi kare nebatch ye sensor housings. Rusvingo rwakanga rwuri 1.2mm, uye isu takanga tine 50% chirambidzo kusvika tagadzirisazve gating system uye nekuwedzera tembiricha yekudira-iyo yakazounza yayo yega seti yezviyo zvinonetsa. Zvinogara zviri pakati nepakati.
Apa ndipo apo chiitiko chemuvambi chinova chisingagone kutaurirana. Chitoro chinongodira zviri nyore kabhoni simbi zvimiro zvinogona kugumburwa zvakaipa ne17-4. Unoda mumwe wako anonzwisisa simbi, kwete kuumba chete. Ndakaita nhaurirano dzakanaka nezvikwata panzvimbo dzakadai Qingdao Qiangsenyuan Technology Co., Ltd. (QSY). Kutarisa kwavo kwenguva refu Investment casting uye alloys akakosha, sezvakataurwa panzvimbo yavo tsngtaocnc.com, inoratidza kuti vakambofamba nematambudziko aya chaiwo, inova hafu yehondo.
Post-Casting: Iko PH Inonyatsoitika
Ichi ndicho chikamu chinonyanya kufuratirwa muRFQs. Iwe hausi kukanda 17-4 PH. Iwe unokanda 17-4 isina tsvina mune mhinduro-yakagadziriswa mamiriro. Iyo Precipitation Hardening inouya mushure. Iyo as-cast chikamu chakapfava uye chinogoneka. Wobva wapisa uchiibata kune yakatsanangurwa H-condition.
Iyo yakakosha kutonga ndeyekufanana kwekushisa uye mhepo. Kana iwe uchivavarira H900 yekusimba zvakanyanya (kutenderedza 190 ksi tensile), kutsauka kwe25°F muchoto kunogona kutungamira mukuoma kusingaenderane pakumhanya kwekugadzira. Isu takambove nebatch yeaerospace linkage parts iyo yakundikana QC nekuti choto thermocouple yakanga ichidonha; zvikamu kune rumwe rutivi rwetireyi zvakasangana spec, vamwe havana. Chakanga chiri chidzidzo chinodhura chekusafungira kuti heat treater yatozviona.
Uye machining mushure mekuoma? Zvinogoneka asi zvakaoma. Kana iwe uchida yakakosha kubviswa kwesimbi, zviite mune annealed state post-cast, wobva waomesa. Chero kupera kwechiedza mushure mekuomeswa kunoda maturusi eceramic kana CBN, uye uri kuona maturusi achipfeka kunge hawki. Mutengo wemutengo unochinja zvakanyanya zvichienderana nekutevedzana uku.
Dimensional Drift Panguva Yekurapa Kupisa
Chinhu chakavanzika chinoruma vanogadzira: kuoma kwemvura kunokonzeresa kushoma, asi kunofungidzirwa, shanduko yedimensional. Hazvina kufanana nekudzima kabhoni simbi, asi iripo. Kune 100mm dimension, unogona kuona kuchinja kwe 0.05mm kusvika 0.1mm. Kana iwe wakabata +/- 0.05mm kushivirira pane yakakosha bhora, unofanira kuzvidavirira pane izvi. Isu ikozvino tinogara tichivaka shrinkage / kukura chinhu chakanangana neH-mamiriro mune yekukanda kufa dhizaini yezvinhu zvakakosha. Kuregeredza izvi kunoreva kuguma ne-in-spec material asi kunze-kwe-spec dimensions.
Chaiyo-Nyika Kukundikana uye Kugadzirisa
Ndinoyeuka chimwe chirongwa chechikamu chemugungwa—pombi isingaori. Iyo fungidziro yaive 17-4 PH H1150 yemusanganiswa wakanaka wesimba uye nekupokana kuramba. Iwo akakandwa aitaridzika akanaka, akapasa X-ray, asi akakundikana mukuyedzwa kwemunyu-spray kare kupfuura zvaitarisirwa.
Chikonzero chikuru? Intergranular corrosion. Kuratidzwa kwenguva refu mukurapa kwekuchembera kwe1150 ° F, kana isina kudzorwa zvakakwana, inogona kukonzera chromium carbides kudonha pamiganhu yezviyo, ichipedza chromium munharaunda. Kugadzirisa kwanga kusiri kushandura zvinhu, asi kugadzirisa kutenderera kwekupisa uye kuve nechokwadi chekudzima nekukurumidza mushure mekugadzirisa anneal nhanho. Izvi hazvisi zvemabhuku; ndiyo mhando yemaitiro nuance iwe yaunodzidza kubva mukumhanyisa zviuru zvezvikamu uye kuona izvo zvinoputsika uye nei.
Uku ndiko kukosha kwemutengesi anobatanidza kukanda uye machining. Kana iyo imwecheteyo inodzora iyo yese process ketani kubva ku mold kusvika yapera chikamu, senge QSY's yakasanganiswa Investment casting uye CNC machining kupa, kugadzirisa matambudziko inova yakavharwa-loop maitiro. Iwe hausi kupomera caster, ipapo heat treater, ipapo machinist. Mhinduro yacho inokurumidza uye inogona kuitwa.
Nguva Yokuishandisa, Nguva Yokufamba Uchibva
Saka, '17 4 kuisa mari pakutsvaga' kunoita riini? Chekutanga, kana kuoma kwakakwira uye mutengo wekugadzira kubva kune yakasimba ungave unorambidza. Chechipiri, kana iwe uchida musanganiswa wepakati corrosion resistance uye simba rakakwirira muchikamu chimwe chete. Chechitatu, kana iwe uine vhoriyamu yekururamisa iyo ceramic mold tooling mutengo.
Ndepapi paunofanira kufungazve? Kune maumbirwo akareruka-basic flange kana bhari rakatwasuka. Ingoigadzira. Kune maapplication anoda ekupedzisira corrosion kuramba munzvimbo inoderedza asidhi, imwe stainless yakasiyana inogona kunge iri nani. Uye pasevhisi yekunyanya kupisa-yepamusoro, rangarira kuti mamiriro eH anoshaya simba pamusoro pe600°F.
Izvo zvakakoshawo kubvunza nezve mamwe alloys. Dzimwe nguva, duplex Stainless simbi yekudyara yakakandwa uye yakagadzirwa inogona kupa iri nani mutengo / kuita reshiyo yechishandiso. A good foundry engineer achava nehurukuro iyi newe, pane kungobvuma kudhindwa.
The Supplier Landscape uye Pragmatic View
Musika wacho wakazara nema foundries arikuda kugona. Musiyanisi ari munhaurirano yehunyanzvi. Kana ndikatarisa kumashure kwemutengesi, makore makumi matatu muindastiri, sekutaura kunoita QSY, masaini anogona kunge akatarisana nezvakawanda uye maitiro evolutions. Zvinoreva kuti vangangoona mapurojekiti 17-4 akashanda uye ayo asina.
Kutaura kwavo kushanda navo cobalt-based alloys uye nickel-based alloys ipuroksi yakanaka. Kana vachikwanisa kubata kudira uye kugadzirisa kutonga kune iwo ma superalloys, 17-4 iri mukati meiyo metallurgical wheelhouse. Dambudziko rinowanzoitika mukuenderana kwemafambisirwo ekugadzira, kwete kuita sampuli imwe yakanaka.
Pakupedzisira, kutsanangura '17 4 kuisa mari yekuisa' ndiko kutanga kwehurukuro, kwete kuguma. Inounza pamwechete chinhu chinonyengera uye yakapfava maitiro. Kubudirira kunotsamira pakunzwisisa mharadzano iyoyo - matambudziko ekuyerera kwemvura, iyo isinga taurike kudzora kupisa kwekupisa, uye dimensional nuances. Tora mubatanidzwa iwoyo nechitoro chine ruzha, uye maitiro acho anoburitsa zvikamu zvisingaite kuita chero imwe nzira. Ita zvisizvo, uye unosara uine zvidimbu zvinodhura, zvakaoma zvikuru.
