Ngatichekei neruzha. Kana vanhu vakanzwa Stetellite 6, vanowanzofunga kuti ibara remashiripiti — ingoirova chero chikamu uye woidaidza kuti zuva. Iko kukanganisa kunodhura. Iyo inonakidza cobalt-chromium alloy, hongu, ine mukurumbira wekuramba kurira, simbi-kusvika-simbi kupfeka, uye inobata mupendero panguva yakakwirira. Asi kutsanangura uye machining Stellite 6 zvikamu haisi cheki bhokisi rekuita; inhevedzano yesarudzo dzemaune, dzimwe nguva dzinoodza mwoyo. Ndakaona mapurojekiti akawandisa kwakasarudzwa chinhu nekuti chaive chakaomesesa kana chakanyanya kupfeka pachati, tisingatarise chokwadi chekugadzira kana nzira yekutadza chaiko. Haisi chinhu chete; kuzvipira kune chaiyo process cheni.
Chokwadi cheKuchigadzira
Iwe haungohodha Stellite 6 senge 304 isina tsvina. Iyo yekugovera cheni yakasiyana. Tiri kutaura nezve nyanzvi dzekuvamba uye machinists vanonzwisisa exothermic maitiro uye maitiro ezvinyorwa. Pakutanga, takaedza kuibata sesimbi yakaoma. Kukanganisa kukuru. Kune prototype yechigaro chevhavha, takaenda neyakajairwa mari yekukanda imba. Zvakaguma nei? Micro-kutsemuka uye kusagadzikana kuoma. Chidzidzo chacho chaive chehutsinye: maitiro ekukanda ecobalt-based alloys ndiyo mhuka yayo. Hazvisi zvekunyunguduka nekudira; ndezvekunyatso kudzora tembiricha uye kunzwisisa kuti iyo alloy inosimba sei. Apa ndipo apo mudiwa ane ruzivo rwakadzama-chaiyo inova isingagone kutaurirana.
Ndakave nerombo rakanaka nezvitoro zvinonyora zvakajeka alloys akakosha sehunyanzvi hwekugona. Semuenzaniso, mutengesi anoda Qingdao Qiangsenyuan Technology Co., Ltd. (QSY) inotaura nezvekushanda necobalt-based alloys mune yavo intro. Ndicho chiratidzo. Kambani yanga iri mukukandira nekugadzira kweanopfuura makore makumi matatu ingangove yaona makomba. Havangopi Stellite 6 zvikamu; ivo (vanofanira) kupa ruzivo rwekuita kuti vashande. Shell mold uye kukanda kwekudyara kwavanonyora kwakakosha, asi dhiyabhorosi ari mumaparamita eiyi chaiyo alloy.
Rutivi rwekugadzira imwe nyika. Iwe unofunga kuti wakagadzira zvinhu zvakaoma kusvika waedza kutendeutsa kana kugaya Stellite 6 mukuomarara kwayo, se-cast-cast state. Inoseka standard carbide. Isu takapisa nematurusi pabasa relathe tisati tachinja kune dzakaomarara setups, inononoka kumhanya, uye yakatsaurirwa mamakisi ecarbide. Kunyange zvakadaro, ibasa rekugaya kupfuura rekucheka. Chinangwa ndechekubvisa zvinhu pasina kukonzeresa kushushikana kwekushisa kunogona kukonzera kutsemuka. Inononoka, inodhura, uye inoda machinist anoteerera, kwete kungomhanyisa chirongwa.
KwaInopenya (Uye Kwaisingaite)
Kanganwa bhurocha racho. Iko kukosha chaiko kweStellite 6 iri mune chaiyo, yekuranga mamiriro. Tora yakakomba gedhi valve trim muoiri & gasi-kwaunovhara-yakanyanya kuvharika, kukukurwa kwechikamu, uye kugara uchichovha bhasikoro. Pano, musanganiswa wayo wekupokana necorrosion (kwete yakanaka senge nickel alloys, asi ine hunhu) uye yakasarudzika kuramba inonamira kupfeka uye galling hazvienzaniswi. Isu takaishandisa kune yakakosha kuvhunga valve chikamu pasi pekukukurwa kwejecha; yakaramba yakaomeswa 17-4PH nechikamu cheshanu. Ndiko kukunda.
Asi isarudzo isina kunaka yekukanganisa. Ndinoyeuka purojekiti yepureti inopwanya dombo. Mumwe munhu akataura pamusoro peStellite 6. Yakakundikana zvakaipisisa-kupwanya uye spalling pasi pekudzokororwa kwesimba guru. Ndiyo brittle kukundikana modhi. Isu takachinjira kune chimwe chinhu chisingachinjike, uye dambudziko rakanyangarika. Chinokosha ndechekuongorora nzira yekupfeka. Kutsvedza kweabrasive here? High-tembiricha simbi-ku-metal friction? Corrosion plus light abrasion? Stellite 6 inopenya kune maviri ekutanga, mediocre kune yakachena corrosion, uye yakaipa kune inorema kukanganisa.
Iyo Nitty-Gritty Yekutsanangurwa uye Kushivirira
Iwe haugone kungotumira dhizaini ine Material: Stellite 6. Iko kubvunza dambudziko. Iyo yakatarwa inoda kusimba. Uri kureva ASTM F75 (iyo yakajairwa vhezheni)? Chii chinodiwa kuomarara siyana? As-cast? Kana mhinduro yakanyungudika uye yachembera? Iyo mechanical zvivakwa uye kunyangwe kupfeka kuramba kushanduka nekupisa kurapwa. Zvekushandisa rin'i yechisimbiso, takadzidza nenzira yakaoma kuti kutsanangura HRC 40-45 kwakanga kusina kukwana. Isu takawana zvikamu paHRC 42, asi iyo microstructure yakanga isiriyo, zvichitungamira kune nguva isati yakwana micro-pitting. Zvino, isu tinotsanangura iyo ASTM chiyero uye micrographic chinodiwa chekugovera carbide.
Dimensional tolerances on Stellite 6 zvikamu vanoda chokwadi chekuongorora. Nekuda kwekuoma kwayo kugadzira, kubata ± 0.0005 kushivirira pane yakakura dhayamita haisi kungodhura; kazhinji hazvigoneke nekuda kwekureruka kwekushushikana uye maitiro ekukuya. Isu tinogadziridza basa, tichibvumira kushivirira kwakakura pazvinogoneka uye tichitsanangura kuvharika kwakakosha kana nzvimbo dzekubatanidza zvakajeka. Dzimwe nguva, zvine hungwaru kugadzira simbi isina simbi substrate ine Stellite 6 weld overlay kana kuisa chaizvo panoitika kupfeka. Iyi nzira yakasanganiswa yaive shanduko yemutambo wepombi hombe yatakashanda pairi, kuderedza mutengo uye nguva yekutungamira zvakanyanya.
Kupedzisa kwepamusoro ndeimwe pfungwa isina kujeka. Girazi rinopera harina kunaka nguva dzose. Kune mamwe ekutsvedzerera kupfeka maapplication, inodzorwa, yakashongedzwa zvishoma kubva mukukuya inogona kubatsira kuchengetedza lubrication. Isu tinotsanangudza Ra, asi zvakare dzimwe nguva tinosanganisira chinyorwa pane yakadzika nzira inoenderana nekufamba. Ndizvo zvidiki izvi, zvinofambiswa neruzivo ruzivo rwunoparadzanisa chikamu chinoshanda kubva kune chinogara.
Kukundikana uye Zvidzidzo Zvakadzidzwa
Kukundikana kwangu kwandisingakanganwi kwaiva mapanga ekuveura anopisa. Isu takatsanangura yakasimba Stellite 6, investimendi yakakandwa, ipapo chaiyo pasi. Vakaita zvinoyevedza ... kwemakumi maviri emacycles. Ipapo, mutswe une ngwavaira wakapararira kubva mugomba rinokwira. Post-mortem ongororo yakaratidza kuti nyaya yanga isiri iyo nyaya; ndiwo magadzirirwo acho. Isu takanga tiine kona yakapinza yemukati (stress concentrator) padivi penzvimbo yekusungirira. Muchinhu chakaoma, chine brittle, ndiko kutsemuka kwakamirira kuitika. Kugadzirisa kwaive nyore: radius ine rupo mukugadzirisazve. Chidzidzo chacho chaive chakadzama: dhizaini yekugadzira yakakosha, asi neine alloys ekunze, iwe unofanirwa kugadzira maitiro enyama. Iwe haugone kungoisa dhizaini yesimbi pamusoro.
Chimwe chidzidzo chaisanganisira kujekeswa kwezvekutengesa zvinhu. Isu takambogamuchira zvikamu zvaisangana ese dimensional specs asi zvakatadza nguva isati yakwana. Zvakazoitika kuti mutengesi akange atsiva yakafanana cobalt alloy kuchengetedza mutengo. Pasina certification yezvinhu uye yakavimbika inoteedzera sosi, uri kubhururuka usingaoni. Ikozvino, isu tinosimbirira pazvigayo certs zveyakaomeswa alloy uye kazhinji kuita nzvimbo-cheki spectroscopy. Vimba, asi simbisa. Ichi ndicho chikonzero chakatangwa mabasa ane rekodhi refu, sezvakataurwa QSY neayo makumi matatu emakore, inogona kupa chivimbo chakawanda-vane mukurumbira wekusimudzira mhiri kwegoko ravo rekugadzira mold, kuisa mari, uye CNC machining masevhisi, uye kutsiva zvinhu inzira inokurumidza kuparadza izvo.
Dambudziko guru rinoramba riripo nderokugadzirisa mari. Stellite 6 inodhura-iyo mbishi, iyo nyanzvi yekukanda, iyo yakaoma machining. Iwe unofanirwa kuratidza kukosha kwayo kuburikidza nemutengo wakazara wehupenyu: kuderedzwa nguva, kushoma kwekuchinja-kubuda, kuwedzera kuchengetedzeka. Kune yakajairika vharafu muindasitiri, yakawandisa. Kune iyo isingasvikike pazasi pemvura yakadzika-yegungwa, ndiyo yega sarudzo. Kuita iyo bhizinesi kesi, ine chaiyo data kubva kumunda miedzo, chikamu chebasa.
Kuipeta Iyo: A Pragmatic View
Saka, chii chekutora? Stellite 6 zvikamu chishandiso chine simba, asi haisi mhinduro yepasirese. Vanoda ruremekedzo rwemaitiro ese: kubva kwakaringana yekupfeka nzira yekuongorora, dhizaini yakarongedzerwa hunhu hwealloy, kusvika pakubatana nemugadziri anonzwisisa zvechokwadi kuomarara kwecobalt-based alloys kuburikidza nekukanda uye post-kugadzirisa. Iko kubatana pakati peinjiniya nekugadzira.
Usanyengerwa ne data sheet zvivakwa chete. Funga nezve kugaya, kupisa kupisa, mutengo wechikamu chakaraswa nekuda kweruzivo rwekugadzira iwe wawakafuratira. Tanga nechirevo chakajeka chedambudziko: Isu tinoda chikamu chinopona X nharaunda, ine Y mhando yekupfeka, yeZ ma cycle. Kana mhinduro yakananga kuStellite 6, saka enderera mberi nemeso akavhurika kune izvo zvekugadzira zvinhu. Icho chinhu chinopa mubairo kungwarira, kushandisa ruzivo uye kuranga fungidziro. Munzvimbo chaiyo, pachikamu chakakodzera, chakakodzera peni rega rega uye chero chidimbu chemusoro.
