Lapho onjiniyela becacisa izingxenye ze-Stellite zamavalvu asebenza ngogesi, izindlu zephampu, noma imibhobho egqokwa kakhulu, abagcini nje ngokuthenga insimbi—bathenga ukuqina kwe-dimensional ngaphansi kwengcindezi engu-300 MPa, ukumelana ne-galling ku-650°C, nokungaguquguquki kwe-microstructural kuwo wonke amaqoqo anezingxenye ezingu-500. Ngakho-ke ukutholakala kweqiniso Imboni ye-Stellite Okubalulekile—hhayi isisekelo esivamile esinomugqa owodwa we-cobalt-alloy, kodwa indawo eyakhelwe i-AMS 5387, T800, namanye ama-superalloy e-cobalt-nickel ukusuka ku-billet eluhlaza ukuya engxenyeni eqediwe.
Sibone amaphrojekthi amaningi kakhulu elibaziseka imijikelezo yokwelapha ukushisa engafani—lapho umphakeli ehlanganisa i-Stellite 6 ngaphambi komshini, bese eqa ukufakwa kwesisombululo ngemva kokugaya okokugcina. Umphumela? Ukwehla ngo-12% kokuqina kwe-Rockwell C kanye nokuphalaza ngaphambi kwesikhathi emikhonweni yepompo ephindaphindayo. Kwa-QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., yonke ingxenye ye-Stellite iqala ngama-ingots e-AMS 5387 noma T800 aqinisekisiwe, aqinisekiswa ngokuhlaziywa kwe-spectrographic ngaphambi kokulingisa noma ukufoja. Akukho okuhlukile. Akukho "ukuyekwa kwenqwaba." Silandelela inombolo ngayinye yokuncibilika, ukugijima kwesithando somlilo, kanye nezinga lokupholisa—hhayi ngenxa yokuthi umsebenzi wamaphepha, kodwa ngenxa yokuthi umehluko ongu-0.3% kokuqukethwe kwekhabhoni kushintsha ukuphila kokugqoka ngo-40% ekusetshenzisweni kwe-slurry abrasive.
Ukuhlanganiswa okuqondile akuyona i-jargon yokuthengisa lapha—indlela esilawula ngayo lokho abanye abangakwazi ukukwenza. Abahlinzeki abaningi be-Stellite bakhipha imishini noma ukwelashwa kokushisa. Senza kokubili endlini, esitezi esiqinisekisiwe se-ISO. Amaseli ethu e-CNC angu-5-axis asike i-Stellite 6 eqinile ngokuqondile ngemva kwe-HIP (ukucindezela okushisayo kwe-isostatic), esusa ukuhlanekezela kokushisa kwangemva kokwelapha okucekela phansi ama-callout e-GD&T njengokubekezelela isikhundla ±0.015 mm emiphongolweni yomlomo. Ngaleso sikhathi, ulayini wethu wokutshala imali usebenzisa isikhunta samagobolondo e-ceramic ashiselwe kuqala ku-1,100°C—okubalulekile ekuvimbeleni ukushwabana okuncane kumapulagi amancane e-cobalt alloy asetshenziswa ezitaki ze-BOP zasolwandle. Ikhasimende elilodwa lishintshile kumthengisi waseYurophu ngemva kokuba isihlalo salo sevalvu ye-Stellite 21 siqhekekile ngesikhathi sokuhamba ngebhayisikili elishisayo; eyethu idlule imijikelezo engu-12,000 ku--40 ° C kuya ku-+200 ° C ngaphandle kwe-microfracture. Umehluko? Siyaphonsa, sishicilele, sinciphise ingcindezi, futhi siqede konke ngokulandelana—akukho kunikezwa okuphakathi kwesikhungo, akukho zikhala zomlando oshisayo.
Ukusebenza komhlaba wangempela kuncike ezintweni ezintathu okungaxoxiswana ngazo: ukulandeleka kwezinto, ukwethembeka kwejiyomethri, nokuqinisekisa ukusebenza. Siloga zonke izikena ze-CMM—X, Y, Z, kanye nedatha yevekhtha engaphezulu—kuzo zonke izindlu zamavalvu okucindezelayo. Uma ikhasimende licacisa u-Ra 0.4 µm ebusweni obuvaliwe, siwukala nge-stylus profilometer *futhi* siqinisekisa ukunamathela kokunamathela ngokuhlolwa kwetheyiphu ye-ASTM B571—hhayi nje “ukuhlola umdwebo ngamunye.” Ezingxenyeni zephampu ze-AMS 5387, sisebenzisa ukuhlolwa kwe-ultrasonic (UT) kuya ku-ASTM E114 ngenkatho engu-100%, sibambe ukuqina okungaphansi komhlaba okungagejwa yi-X-ray kumajiyometri ayinkimbinkimbi njengezindlu zesilinda sephampu ye-piston. Futhi lapho indawo yokuhluza yaseNingizimu-mpumalanga ye-Asia icela imibhobho ye-cobalt alloy elinganiselwe isevisi ye-H₂S, asizange nje sihlangabezane ne-NACE MR0175—sengeze ukuqinisekiswa kwesibili nokuqinisekiswa kokuphrinta kwesibabule. Ngoba "ukuthobela" akwanele lapho i-hydrogen embrittlement ibeka engcupheni yokuvalwa.
Ukukhetha imboni ye-Stellite kusho ukukhetha ukuthi umnikazi wengozi ungubani. Abanye abathengisi bacaphuna izikhathi zokuhola ngokushesha ngokweqa isixazululo se-annealing. Abanye basebenzisa izindlela zamathuluzi ezijwayelekile ezidala izimpawu zokuxoxa endaweni ye-Stellite 12—onakalise ubuqotho bophawu. I-QINGDAO QIANGSENYUAN ayilungiseleli isivinini iyodwa. Silungiselela ukusetshenziswa kokuqala kwesokudla: Ukubuyekezwa kwe-GD&T ngaphambi kokucaphuna, impendulo yokwenziwa ngaphakathi kwamahora angu-48, nokuqinisekiswa kwesibonelo ngokuhlolwa komjikelezo wokulayisha uma kudingeka. Amakhasimende ethu emkhakheni wezinsizakalo zenkundla kawoyela eNyakatho Melika athembele kithi ukuze uthole ama-winch center shaft roller asebenza amahora angu-18,000 ezindaweni zasolwandle ezigcwele usawoti—akukho kulungiswa kabusha, akukho ukwehluleka kwenkundla. Lokho kuthembeka kuvela ekwenzeni ama-alloys asekelwe ku-cobalt-hhayi ngezikhathi ezithile, kodwa nsuku zonke. Kusukela ekusekelweni kwedizayini ukuya ekulandelekeni kohlangothi, kusukela kumapulaki e-T800 alloy kuya kumabhomu e-Stellite 6 ngokwezifiso, sakha lokho okusebenzayo lapho ukwehluleka kungeyona inketho. Lapho imfuneko yakho elandelayo ye-Stellite ifika phezu kwedeski, buza: ingabe imboni yakho iyawazi umehluko phakathi kokuqina nokuqina? Noma bavele bagaye lokho okuthumelayo?
