vakagovana mhedzisiro yeongororo yakadzama yakaitwa nekambani ichienzanisa Inconel 625 yakasimba mabara neiyo nyowani Sanicro 60 hollow mabara.
Competitive giredhi Inconel 625 (Nhamba yeUNS N06625) is nickel-based superalloy (heat resistant superalloy) yakashandiswa mugungwa, nyukireya nemamwe maindasitiri kubva payakavandudzwa muma1960s nekuda kwesimba rayo repamusoro uye kuramba kupisa kwakanyanya. . tembiricha. Yakawedzera dziviriro kubva mukuora uye oxidation.
Challenger itsva igoro-tsvimbo musiyano weSanicro 60 (inozivikanwawo seAlloy 625). Sandvik's new hollow core yakagadzirirwa kupa mashandiro arinani mune dzimwe nzvimbo dzinogarwa neInconel 625, yakagadzirwa kubva kune yakakwira simba nickel-chromium alloy iyo inogona kumirisana nekupisa kwakanyanya munzvimbo dzine chlorine. Inodzivirira kune intergranular corrosion uye stress corrosion, ine Pitting Resistance Equivalency (PRE) yakakura kupfuura 48.
Chinangwa chechidzidzo chacho chaiva chekuongorora zvakakwana uye kuenzanisa machinability yeSanicro 60 (diameter = 72 mm) neInconel 625 (diameter = 77 mm). Maitiro ekuongorora ndiwo hupenyu hwechishandiso, mhando yepamusoro uye chip control. Chii chichabuda pachena: iyo nyowani hollow bar resipi kana yechinyakare bhaa?
Chirongwa chekuongorora paSandvik Coromant muMilan, Italy chine zvikamu zvitatu: kutendeutsa, kuchera nekubaya.
Iyo MCM Horizontal Machining Center (HMC) inoshandiswa pakuchera nekutepa bvunzo. Kushandura mashandiro kuchaitwa paMazak Integrex Mach 2 uchishandisa maCapto holders ane mukati mekutonhorera.
Upenyu hwezvishandiso hwakaongororwa nekuongorora kupfeka kwezvishandiso pakucheka kumhanya kubva pa60 kusvika 125 m/min uchishandisa S05F alloy giredhi yakakodzera semi-kupedza uye roughing. Kuyera kuita kwebvunzo yega yega, kubviswa kwezvinhu pakumhanya kwekucheka kwakayerwa nematanho matatu makuru:
Seimwe chiyero che machinability, chip kugadzirwa kunoongororwa uye kutariswa. Iwo ma testers akaongorora chizvarwa chechip chekuisa akasiyana geometries (Mazak Integrex 2 inoshandiswa nePCLNL inobata uye CNMG120412SM S05F inoshandura yekuisa) nekumhanya kwekucheka kwe65 m/min.
Unhu hwepamusoro hunotongwa maererano nemaitiro akasimba: kushata kwepamusoro kweiyo workpiece hakufaniri kudarika Ra = 3.2 µm, Rz = 20 µm. Ivo vanofanirwawo kunge vasina kuzunguzika, kupfeka, kana kuvakwa-mupendero (BUE - zvinhu zvekuvaka pazvishandiso zvekucheka).
Miedzo yekuchera yakaitwa nekucheka madhisiki akati wandei kubva kune imwechete 60 mm tsvimbo yaishandiswa pakuedza kushandura. Gomba rakagadzirwa rakadhirwa parallel kune axis yetsvimbo kwemaminitsi mashanu uye kupera kweiyo kumashure kwechishandiso kwakanyorwa nguva nenguva.
Muedzo we threading unoongorora kukodzera kwe hollow Sanicro 60 uye yakasimba Inconel 625 yeiyi yakakosha maitiro. Maburi ese akagadzirwa muyedzo yekuchera yakapfuura akashandiswa uye akachekwa neCoromant M6x1 thread tap. Nhanhatu dzakaiswa muMCM yakachinjika machining centre kuti iedze nemhando dzakasiyana dzekuisa shinda uye kuona kuti dzinoramba dzakaomarara mukati mekutenderera kutenderera. Mushure mekugadzira tambo,yera dhayamita yegomba rinobuda necaliper.
Mhedzisiro dzebvunzo dzaive dzisina kujeka: Sanicro 60 hollow mabara yakapfuura yakasimba Inconel 625 ine hupenyu hwakareba uye nani pamusoro pekupedzisira. Iyo zvakare yaienderana nemabhawa akasimba mukugadzira chip, kudhirowa, kugogodza uye kubata uye kuita zvakaenzana muyedzo iyi.
Hupenyu hwesevhisi hwemaburi mabhawa pakumhanya kwepamusoro hwakanyanya kureba kupfuura mbariro dzakasimba uye dzinopfuura zvakapetwa katatu kupfuura mbariro dzakasimba pakumhanya kwekucheka kwe140 m/min. Pakumhanya kwepamusoro uku, bara rakasimba raingotora maminetsi mashanu chete, nepo hollow bar yaive nehupenyu hwekushandisa hwemaminitsi gumi nematanhatu.
Sanicro 60 chishandiso hupenyu hwakaramba hwakagadzikana sezvo kumhanya kwekucheka kwakawedzera, uye sezvo kumhanya kwakawedzera kubva ku70 nguva kusvika 140 m / min, hupenyu hwematurusi hwakadzikira ne39 chete%. Iyi i86% ipfupi yehupenyu hwekushandisa pane Inconel 625 yekuchinja kwakafanana mukumhanya.
Pamusoro peSanicro 60 hollow tsvimbo isina chinhu yakapfava zvakanyanya pane iya yakasimba Inconel 625 tsvimbo isina. Izvi zvose chinangwa (kushata kwepamusoro hakupfuure Ra = 3.2 µm, Rz = 20 µm), uye kunoyerwa nekuona kwemupendero, mitsetse yekudengenyeka kana kukuvadzwa kwepamusoro nekuda kwekuumbwa kwemachipisi.
Iyo Sanicro 60 hollow shank yakaita zvakafanana neyekare Inconel 625 yakasimba shank muyedzo yekutsikisa uye yakaratidza mhedzisiro yakafanana maererano nekupfeka kweflank uye yakaderera chip kugadzirwa mushure mekuchera.
Zvakawanikwa zvinotsigira zvakasimba kuti matanda maburi inzira yakavandudzwa kune tsvimbo dzakasimba. Upenyu hwezvishandiso hwakareba katatu kupfuura makwikwi pahupamhi hwekucheka. Iyo Sanicro 60 haingogari kwenguva refu, zvakare inoshanda zvakanyanya, ichishanda nesimba uye nekukurumidza uchichengetedza kuvimbika.
Nekuuya kwemusika wepasirese unokwikwidzana uyo uri kusundidzira vashandisi vemichina kuti vatore maonero enguva refu yekudyara kwavo kwezvinhu, Sanicro 60's kugona kuderedza kupfeka pazvishandiso zvemachining chinhu chinodiwa kune avo vari kutsvaga kuwedzera migero uye nemakwikwi emitengo yechigadzirwa. . zvinoreva zvakawanda.
Haisi chete muchina uyu uchagara kwenguva refu uye shanduko ichidzikiswa, asi kushandisa gomo musimboti kunogona kupfuura iyo yese machining maitiro, kubvisa kudiwa kwegomba repakati, zvichigona kuchengetedza nguva yakawanda nemari.