Paunonzwa 'Haynes 25 material seal', pfungwa yekukurumidza inowanzosvetukira kuhunyanzvi hwayo hwekupisa-kunyanya zvakadaro, kupihwa kwayo cobalt-chromium-nickel-tungsten pedigree. Asi mumakore angu ekubata nemazvo ezvikamu, ndaona dambudziko chairo harisi madhizaini eiyo alloy pabepa; ndiko kuturikira kwezvivakwa izvi kuita chisimbiso chakavimbika, chinodonhedza pasi pesimba rekupisa uye mechanical stress. Mazhinji mashiti anoratidza kupikisa kwayo oxidation kusvika 1800 ° F, asi havawanzo tsanangura machining nuances kana yekuisa chisimbiso kupedzisa kunodiwa post-CNC basa iro rinogadzira kana kutyora application. Chinhu chimwe kuzvikandira; mumwe kuti apedzise kuti chisimbiso chinobata.
Iyo Alloy's Hunhu uye Machining Reality
Haynes 25, kana L605, haisi yako yemazuva ese isina tsvina. Kuwanda kwayo kwekushanda-kuomesa mwero ndeyengano. Iwe unofunga kuti uri kutora mwenje wekucheka pa lathe, uye kamwe kamwe chishandiso chinotaurirana kana kupfeka nguva isati yakwana kana ma paramita ako akatombodzima zvishoma. Takadzidza izvi nenzira yakaoma kare kare. Kune chisimbiso chiso chakagadzirirwa turbine exhaust coupling, isu pakutanga takashandisa yakajairwa carbide inoisa. Zvakaguma nei? Kusatendeseka kwepamusoro uye micro-fractures pamicheto-hazvigamuchirwi kune chisimbiso chepamusoro. Izvo zvinhu zvinoda kuseta kwakaomarara, maturusi anopinza ane yakanaka rake, uye kazhinji, chinja kune ceramic kana CBN mamakisi ekupedzisa kupasa kuti uwane icho chinodiwa Ra 16 kana zvirinani.
Apa ndipo apo chiitiko chemuvambi chinova chakakosha. Kambani yakadai Qingdao Qiangsenyuan Technology Co., Ltd.(QSY), nemakumi matatu emakore emugoko uye kuisa mari, inonzwisisa kuti mhando yekukanda inoraira 50% yehondo yekugadzira. Yakashata yakakandwa Haynes 25 isina nemukati shrinkage kana inclusions ichaparadza chisimbiso chikamu panguva yekugadzira, zvisinei kuti CNC anoshanda sei. Kutarisa kwavo pane alloys akakosha zvinoreva kuti vangangotsvaga iyo chaiyo bar stock kana kudzora iyo melt chemistry kudzikisa nyaya idzi kubva pakutanga.
Iyo yekuisa chisimbiso geometry pachayo inowedzera zvidimbu. A simple face chisimbiso? Pamwe zvakananga. Asi kana iwe ukabatanidza maficha akaoma senge kudzvanyirira-kuyeresa grooves kana anti-kutenderera anotsvedza akananga muchikamu cheHaynes 25, iyo machining zano inofanirwa kuzvidavirira kune iyo alloy maitiro ekutsauka. Isu takatofanira kugadzirisa clamping mauto uye kutevedzana mashandiro kudzivirira kukanganisa iyo yakakosha yekuisa chisimbiso kumeso. Kubata-bata, kwete kungoita zvakarongwa.
Chisimbiso Dhizaini uye Misungo yekushandisa
Kugadzira gungano rechisimbiso rakatenderedza Haynes 25 imwe nzvimbo. Kupisa kwayo kwekuwedzera kweiyo coefficient inosiyana zvakanyanya kubva kune zvakajairika mating zvinhu seInconel kana mamwe masimbi. Muchisimbiso chinomira chevharuvhu yekupisa, takambobatanidza chigaro cheHaynes 25 chine hunde yealloy yakasiyana. Munguva yekupisa bhasikoro, kuwedzera kwemutsauko kwakakonzera nzira yekuvuza kuvhurika. Tinodzidzei? Chisimbiso hachisi chikamu cheHaynes 25 chete; ndiyo yose yezvinhu. Iwe unofanirwa kuenzanisira kukura kwekupisa kana, zviri nani zvakadaro, kuiyedza pasi pemasevhisi akateedzerwa.
Kurapa kwepamusoro inyaya inokakavadzana. Vamwe vanopika nechiedza chechrome plating kana yakasarudzika nitriding process yekuwedzera kupfeka kuramba kwechiso chekuisa chisimbiso. Nekudaro, neHaynes 25's inherent chromium oxide layer ichigadzira patembiricha, kuwedzera imwe coating dzimwe nguva inogona kupera kana kudonhedza, ichigadzira marara anokwira pamusoro. Mumasevhisi akanyanya kuomarara atinobata - funga aerospace kana magetsi ekubatsira masisitimu - iyo yaunofarira inorerekera kune yakanyatsogadzirwa uye yakavharwa isina simbi pamusoro. Kutendeseka kweiyo native oxide layer ndiyo yakakosha.
Ongororo yekutadza kazhinji inonongedzera kune yechipiri mashandiro. Chikamu chechisimbiso chinogona kupasa bvunzo dzekumanikidza, asi kutadza kushanda nekuda kwekukuvara kwekubata. Haynes 25, ichiri yakaoma, inogona kuramba iri nick. Isu takaita yakasimba post-machining yekubata maprotocol tichishandisa zvisiri-metallic zvigadziriso uye edziviriro egadhi, kunyanya mushure mekuona batch yezvimwe zvisimbiso zvakakwana zvinorambwa maburrs akaunzwa panguva yekuchenesa nemaoko. Ndiwo aya echivanhu anoparadzanisa chisimbiso chinoshanda kubva kune chakavimbika.
Case in Point: A Turbine Bypass Valve Seal
Muenzaniso wekongiri wakanga uri purojekiti yekudzorera kune imwe nyika-based gas turbine. Chisimbiso chepakutanga mubypass valve actuator yanga ichitadza nguva isati yakwana nekuda kwekusangana kwekuneta kwepamusoro-soro uye kupisa kwemhepo. Mutengi akafungidzira Haynes 25 yekutsiva. Chinetso chaive chikamu chakatetepa chemuchinjiko padyo nemuromo wakavharika, waiwanzo vhiringika panguva yekugadziriswa kwekugadzirisa kwaidiwa mushure mekugadzira kugadzirisa kushushikana.
Maitiro edu, akagadziridzwa kuburikidza nekuedza uye kukanganisa, aisanganisira hutsinye machining, anneal-yekudzoreredza kushushikana, topedza machining nekubvisa kushoma kwestock. Kubwinya kwekupedzisira kweiyo 45-degree sealing cone yakaitwa pane yakajairwa fixture. Takashanda pamwe nechikwata chekugadzira michina pa QSY pane izvi, kushandisa kwavo CNC machining hunyanzvi hwezvakaoma zvemukati contours. Kugona kwavo kubata kushivirira kwakasimba pane yekudyara-kanda pre-fomu yaive mukana mukuru, kuderedza yedu yekupedzisira machining nguva nenjodzi.
Kubudirira kwaienderana nekudzora chimiro chezviyo. Mbeu yakakasharara kubva kune isina kufanira kupisa kupisa kwaizoderedza yakaderera-kutenderera kuneta hupenyu, kunyangwe kuoma kwacho kwaive chaiko. Isu takazotaura nezve inodzorwa kwazvo muchoto mhepo panguva yekupisa kupisa kudzivirira chero pamusoro pecarburization kana decarburization, iyo ingadai yakakanganisa chisimbiso chepamusoro zvivakwa. Chikamu chave chiri mukushandira kwemwedzi inopfuura gumi nemasere izvozvi pasina nyaya dzakataurwa - kuhwina kudiki kwakasimbisa maitiro.
Indasitiri Misconceptions uye Supplier Synergy
Imwe pfungwa isiriyo ndeyekuti kukanda 'super alloy' senge Haynes 25 padambudziko rekuisa chisimbiso zvinorigadzirisa. Kwete chokwadi. Ndakaona zvisimbiso zvakagadziridzwa zvakapfava, zvakachipa alloy ine coating inokodzera zvirinani ingadai yakaita zvakakwana. Kururamisa kweHaynes 25 kunofanirwa kuve musanganiswa wakajeka weoxidizing mamiriro, tembiricha inodarika 1500 ° F, uye inoda simba rakanaka rechimiro. Zvikasadaro, unenge uchingopisa bhajeti.
Ichi ndicho chikonzero kubatana nemupi anonzwisisa rwendo ruzere kubva kunyungudika kuenda kumuchina kwakakosha. A technical foundry uye machinist akafanana QSY haasi mutengesi chete; ivo chitubu. Pamunokurukura a Haynes 25 zvinhu chisimbiso purojekiti navo, hurukuro inogona kubva kune yakanyanya kunaka nzira yekukanda (yavo shell mold casting zvingave nani kune mamwe majometri pane kudyara kweiyi alloy) kune post-kukanda NDT zvinodiwa, nzira yese yekugadzirira yekupedzisira CNC ops. Kuenderera mberi ikoko kunoderedza mikaha yezivo inotungamira mukukundikana kwemunda.
Imwe pfungwa inoshanda inguva yekutungamira uye traceability yezvinhu. Genuine Haynes 25 haisi nguva dzose pasherufu. Mutengesi ane kushanda kwenguva refu mukati special alloys kazhinji yakagadzira cheni dzekutengesa kune dzakasimbiswa stock. Kune zvisimbiso zvakakomba, iwe unoda yakazara mill certs, uye kazhinji, yekuwedzera chemistry verification. Ino haisi nzvimbo yekucheka makona nezvinhu zvisina kusimbiswa 'zvakaenzana', sezvo kuita kwekuisa chisimbiso kunosungirirwa zvakananga kune chaiyo alloy kuumbwa.
Pfungwa Dzekupedzisa: Zviri pamusoro peMaitirwo
Saka, chii chinoita kuti Haynes 25 ibudirire chisimbiso? Haisi nguva imwe chete eureka nguva. Ndiwo muunganidzwa wekusarudzwa kwezvinhu, dhizaini ine ruzivo rwekuzvibata kwekupisa, kunyatsoita uye ruzivo machining, uye kubata zvine hungwaru. Izvo zvinhu zvinokwanisa, asi hazviregereri maitiro mapfupi.
Iyo indasitiri inoshanduka kuenda kune vakasanganiswa vatengesi - avo vanogona kukanda, kupisa kupisa, uye muchina uri pasi pedenga remba - zvine musoro kune zvinhu zvakadaro. Inosimbisa zvishwe zvemhinduro. Kana chiso chekuisa chisimbiso chikaratidza kusanzwisisika panguva yekuongorora kwekupedzisira, machinist anogona kukurumidza kubvunza nemetallurgist aitarisira kurapwa kwekupisa, uye injinjiniya akagadzira gating system. Kugadzirisa matambudziko uku kwakakosha.
Pakupedzisira, iro kiyi izwi ndere 'kutendeseka' - ese ari maviri simbi yekutendeseka yeHaynes 25 chikamu uye kurongeka kwemaitiro echeni yekugadzira. Kana ese ari maviri anoenderana, unowana chisimbiso chisingangosangana nechero pepa, asi chinoita zvakavimbika mukukasharara, kuzunguza, kudziya-bhasikoro kwechokwadi chebasa reindasitiri. Ndicho chinangwa chaicho, uye chinowanikwa mumashoko emusangano, kwete pabhurocha rekutengesa.
