adagawana zotsatira za kafukufuku watsatanetsatane wopangidwa ndi kampaniyo kuyerekeza mipiringidzo yolimba ya Inconel 625 ndi mipiringidzo yatsopano ya Sanicro 60.
Competitive grade Inconel 625 (nambala ya UNS N06625) ndi superalloy yochokera ku nickel (superalloy yolimbana ndi kutentha) yomwe yakhala ikugwiritsidwa ntchito m'nyanja, nyukiliya ndi mafakitale ena kuyambira pachiyambi chake mu 1960s chifukwa cha mphamvu zake zambiri komanso kukana kutentha kwakukulu. .kutentha.Wawonjezera chitetezo ku dzimbiri ndi oxidation.
Challenger yatsopano ndi mtundu wa ndodo ya Sanicro 60 (yomwe imadziwikanso kuti Alloy 625).Sandvik's hollow core watsopano adapangidwa kuti azigwira bwino ntchito m'malo ena okhala ndi Inconel 625, yopangidwa kuchokera ku alloy ya nickel-chromium yamphamvu kwambiri yomwe imatha kupirira kutentha kwambiri m'malo okhala ndi chlorine.Imalimbana ndi dzimbiri komanso kupsinjika kwapakati, ili ndi Pitting Resistance Equivalency (PRE) yoposa 48.
Cholinga cha phunziroli chinali kuyesa mozama ndikuyerekeza machinability a Sanicro 60 (diameter = 72 mm) ndi Inconel 625 (diameter = 77 mm).Njira zowunikira ndi moyo wa zida, mtundu wa pamwamba ndi kuwongolera chip.Chodziwika bwino ndi chiyani: Chinsinsi chatsopano cha bala kapena bala yonse yachikhalidwe?
Pulogalamu yowunika ku Sandvik Coromant ku Milan, Italy ili ndi magawo atatu: kutembenuza, kubowola ndi kugogoda.
MCM Horizontal Machining Center (HMC) imagwiritsidwa ntchito pobowola ndi kuyesa kuyesa.Ntchito zotembenuza zidzachitidwa pa Mazak Integrex Mach 2 pogwiritsa ntchito ma Capto okhala ndi zoziziritsa zamkati.
Moyo wa zida udawunikidwa ndikuwunika mavalidwe a zida pa liwiro lotsika kuyambira 60 mpaka 125 m/min pogwiritsa ntchito giredi ya aloyi ya S05F yoyenera kumalizitsa pang'onopang'ono komanso roughing.Kuyeza magwiridwe a mayeso aliwonse, kuchotsa zinthu pa liwiro kudula kunayesedwa ndi mfundo zazikulu zitatu:
Monga muyeso wina wa machinability, mapangidwe a chip amawunikidwa ndikuwunikidwa.Oyesawo adawunika kupanga kwa chip pazoyika zamitundu yosiyanasiyana (Mazak Integrex 2 yogwiritsidwa ntchito ndi PCLNL holder ndi CNMG120412SM S05F kutembenuza choyika) pa liwiro locheka la 65 m/min.
Ubwino wa pamwamba umaweruzidwa motsatira mfundo zokhwima: kuuma kwapamwamba kwa workpiece sikuyenera kupitirira Ra = 3.2 µm, Rz = 20 µm.Ayeneranso kukhala opanda kugwedezeka, kuvala, kapena m'mphepete mwake (BUE - zomangira pazida zodulira).
Mayeso obowola adachitidwa ndikudula ma disc angapo kuchokera ku ndodo yomweyo ya 60 mm yomwe idagwiritsidwa ntchito poyesa kutembenuza.Bowo lopangidwa ndi makina linabowoleredwa mofanana ndi nsonga ya ndodo kwa mphindi 5 ndipo kuvala kwa kumbuyo kwa chida kunalembedwa nthawi ndi nthawi.
Kuyesa kwa ulusi kumayesa kukwanira kwa Sanicro 60 ndi Inconel 625 yolimba panjira yofunikayi.Mabowo onse omwe adapangidwa m'mayesero am'mbuyomu adagwiritsidwa ntchito ndikudulidwa ndi ulusi wa Coromant M6x1.Zisanu ndi chimodzi zidakwezedwa pamalo opingasa a MCM kuti ayesere njira zosiyanasiyana zolumikizira ndikuwonetsetsa kuti zikukhala zolimba nthawi yonseyi.Pambuyo pa ulusi, yesani kukula kwa dzenje lomwe limachokera ndi caliper.
Zotsatira zake zinali zosakayikitsa: Mipiringidzo ya Sanicro 60 yopanda kanthu idaposa Inconel 625 yolimba yokhala ndi moyo wautali komanso kutha kwapamwamba.Idafanananso ndi mipiringidzo yolimba pakupanga chip, kubowola, kugogoda ndi kugogoda ndipo idachitanso bwino pamayeso awa.
Moyo wautumiki wa mipiringidzo yopanda kanthu pamtunda wapamwamba ndi wautali kwambiri kuposa mipiringidzo yolimba komanso yotalika katatu kuposa mipiringidzo yolimba pa liwiro locheka la 140 m / min.Pa liwiro lokwera kwambiri, bala yolimba idatenga mphindi 5 zokha, pomwe chipikacho chinali ndi moyo wa zida za mphindi 16.
Moyo wa zida za Sanicro 60 unakhalabe wokhazikika pamene liwiro lodula likuwonjezeka, ndipo pamene liwiro linawonjezeka kuchokera ku 70 kufika ku 140 m / min, moyo wa chida unatsika ndi 39% yokha.Uwu ndi moyo wamfupi wa 86% kuposa Inconel 625 pakusintha komweko kwa liwiro.
Pamwamba pa ndodo ya Sanicro 60 yopanda kanthu ndi yosalala kwambiri kuposa ndodo yolimba ya Inconel 625 yopanda kanthu.Izi ndizofunikira zonse (kuuma kwapamtunda sikudutsa Ra = 3.2 µm, Rz = 20 µm), ndipo kumayesedwa ndi m'mphepete mwa mawonekedwe, kugwedezeka kapena kuwonongeka kwa pamwamba chifukwa cha mapangidwe a tchipisi.
Shank yolimba ya Sanicro 60 idachitanso chimodzimodzi ndi shank yakale ya Inconel 625 poyesa ulusi ndipo idawonetsa zotsatira zofananira pamavalidwe am'mbali komanso mapangidwe otsika kwambiri a chip atabowola.
Zomwe zapezedwa zimatsimikizira mwamphamvu kuti ndodo zobowola ndi njira yabwinoko kuposa ndodo zolimba.Moyo wa chida ndi wautali katatu kuposa mpikisano wothamanga kwambiri.Sanicro 60 sikhala nthawi yayitali, imagwiranso ntchito bwino, imagwira ntchito molimbika komanso mwachangu ndikusunga kudalirika.
Kubwera kwa msika wampikisano wapadziko lonse lapansi womwe ukukakamiza ogwiritsa ntchito makina kuti aziwonanso kwanthawi yayitali ndalama zawo zakuthupi, kuthekera kwa Sanicro 60's kuchepetsa kuvala pazida zamakina ndikofunikira kwa iwo omwe akufuna kukulitsa malire ndi mitengo yampikisano yazinthu. .zikutanthauza zambiri.
Sikuti makinawo amatha nthawi yayitali komanso kusinthako kuchepetsedwa, koma kugwiritsa ntchito pachimake chopanda kanthu kumatha kudutsa njira yonse yopangira makina, kuthetsa kufunikira kwa dzenje lapakati, zomwe zitha kupulumutsa nthawi ndi ndalama zambiri.