Izingxenye ze-alloy 400 ziletha ukumelana nokugqwala okungenakuqhathaniswa kumakhemikhali anolaka, olwandle, nezimboni ezine-chloride ephezulu-ikakhulukazi lapho izinsimbi ezingenasici zihluleka khona. Kwa-QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., senze ngomshini izingxenye ezingaphezu kweziyi-12,000 ze-Alloy 400 kusukela ngo-2018 ukuze uthole imizimba yamavalvu asebenza ngogesi, izindlu zamaphampu angasogwini, kanye ne-compressor yegesi emuncu yangaphakathi. Ingxenye ngayinye iqala nge-ASTM B164-certified billet, ithola i-anneal ekhulula ukucindezeleka ngaphambi kokuphenduka kwe-CNC, futhi iphetha ngokuthi Ra ≤0.8 μm surface integrity—akukho okuhlukile.
Kungani Izingxenye ze-alloy 400 zidlula ezinye izindlela kusevisi ye-Real-World
Amakhasimende ayabuza: “Kungani ungavele usebenzise i-316 stainless noma i-duplex?” Impendulo ilele ekuziphatheni kwe-electrochemical—hhayi izincwajana zokumaketha. Ingxubevange 400 (Ni–Cu, ~67% Ni / 30% Cu) imelana nokunciphisa ama-asidi afana ne-hydrofluoric nesibabule lapho ukudlula kwehluleka. Sibone ama-valve angu-316 egqwala phakathi nezinyanga ezingu-9 ngaphakathi komugqa wokudlulisa i-phosphoric acid; ukushintshwa kwe-Alloy 400 piston rod kwathatha iminyaka engu-4.7. Ukungavikeleki kwayo emigodini yamanzi olwandle kanye nokuqhekeka kwe-stress-corrosion akuyona inkolelo-mbono-kuqinisekisiwe elebhu yethu egunyazwe i-ISO 17025 kusetshenziswa izivivinyo zokucwiliswa ze-ASTM G36 kanye nokuhlola okudonsa kancane kwe-ASTM F1113.
Kepha i-Alloy 400 ayiyona i-plug-and-play. Izinga layo eliphansi lokuqina komsebenzi lidinga amathuluzi akhethekile: ukufakwa kwe-carbide okunobuso berakhi obupholishiwe, ukujula okungajulile kokusikwa (≤0.3 mm), kanye nokupholisa izikhukhula ngokucindezela kwebha engu-65. Iklayenti elilodwa lizame ukulisebenzisa emshinini wefa elisetshenziswa yi-HSS—okubangele izinga lokulahlwa elingu-42% kanye namamaki okuxoxa abedlula ukubekezelela indawo kwe-GD&T okungu-±0.025 mm. Manje sifaka isibuyekezo samahhala sokuhleleka ngayo yonke i-RFQ, ukuhlaba umkhosi ngezinkinga ezingaba khona njengokuhlanekezelwa kodonga oluncane noma ukungezwani kokunwetshwa kokushisa okushisayo phakathi nokwelashwa kokushisa.
Lapho I-Precision Machining Ihlangana Nokugqwala-Ijiyomethri Ebalulekile
Ukwehluleka okuningi akuveli ekukhetheni kwezinto ezibonakalayo-kodwa ukwenziwa kwejometri. Indawo yokuvala engaqondani kahle emzimbeni we-valve ye-Alloy 400 ye-pressure ingasheshisa ukugqwala kwe-crevice ngo-300%. Kungakho inqubo yethu ishumeka i-metrology ezigabeni ezintathu: ukuqinisekiswa kwangaphambili komshini we-CMM wokuqina kwesitoko esingavuthiwe, ukulinganisa okukhona okungaphakathi kwenqubo kokunemba komthofu wentambo (okubalulekile kuziqu zamavalvu wesango le-API 6A), kanye nokuqinisekiswa kokuqedwa kokugcina kwendawo nge-interferometry yokukhanya okumhlophe.
Ngokuvamile sikhiqiza izingxenye ezehla abahlinzeki abajwayelekile: 120-mm-diameter Alloy 400 cylinder cylinder liners ezinokwehluka kokuqina kodonga okungu-0.01 mm kubude obungama-450 mm; izibhobo zezindlu zephampu ezingezona eziyindilinga ezidinga ±0.008 mm cylindricity; kanye namabhomu acijile anobunzulu obungu-0.005 mm phakathi kwezingosi eziphumayo neziphumayo. Lokhu akukhona ukubekezelelana-siyakuqinisekisa. Konke okuthunyelwayo kuhlanganisa imibiko enobukhulu obuphelele obulandeleka kumazinga we-NIST, kanye nemibiko yokuhlola ye-batch ethize ebonisa okuqukethwe kwangempela kwe-Cu/Ni/Fe/C—hhayi nje “okuvumelana nokucaciswa.”
Kusuka Ekulingiseni Kuya Ekuqedeni: Kungani Ukuhlanganiswa Okuqondile Kubalulekile
Abanye abathengisi bakhipha i-Alloy 400 cast bese beyimishini. Asazi. Kungani? Ngoba ukuhlukaniswa kwe-dendritic ku-as-cast Alloy 400 kudala izindawo ezicebile ze-Cu ezithambekele ekuhlaselweni okukhethekile. Inqubo yethu yokusakazwa kwesihlabathi isebenzisa izilinganiso zokuqiniswa ezilawulwayo kanye ne-post-cast homogenization ku-1150°C amahora angu-4—kuqinisekiswe ukuhlaziya kwe-microprobe. Lokhu kuqeda ukuhlanganisa, kuqinisekisa ukusabalalisa okungu-67.2±0.3% Ni, futhi kuletha ubulukhuni obungaguquki (130–160 HBW) kuyo yonke ingxenye.
Lokhu kulawula kudlulela ekuqedeni. I-Electropolishing isebenza kabi ku-Alloy 400 ngenxa ye-microstructure yayo yezigaba ezimbili. Kunalokho, sisebenzisa inhlanganisela yobunikazi ye-citric-nitric passivation elandelwa ukuhlanzwa kwe-ultrasonic emanzini angcolile—okugunyazwe ngokwe-ASTM A967 Indlela D. Amakhasimende abika impilo ende yesevisi engu-2.3× kumaluphu okupholisa alayishwe i-chloride uma kuqhathaniswa nezinye eziphucuziwe ngomshini.
Ukukhetha I-Right Alloy 400 Part Partner—Ngaphandle Kweshidi Ledatha
Bheka izimpawu ezintathu: Okokuqala, ubufakazi bokuhlaziywa kokwehluleka komhlaba wangempela-hhayi nje izitatimende zokuthobela. Sigcina ilogi yomphakathi yophenyo lwembangela (okungaziwa) emboza i-hydrogen embrittlement kusevisi ye-H₂S kanye nokuhlanganiswa kwe-galvanic nama-flange ensimbi ye-carbon. Okwesibili, izilawuli zenqubo ebhaliwe: Ingabe ziyasicacisa isikhathi sokucwiliswa kwe-annealing? Izinga lokupholisa? Ukuqinisekiswa kosayizi wokusanhlamvu nge-ASTM E112 ngayinye? Okwesithathu, ukuphendula kuma-callouts e-GD&T—ikakhulukazi iphrofayela, ukuphuma, kanye nendawo eyinhlanganisela. Uma umdwebo wakho ucacisa izilungisi ze-MMC noma izifanisi zesici se-datum, ithimba labo labacaphuni kufanele likhulume lolo limi kahle.
QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. isebenza ngale ndlela ngoba izingxenye ezimelana nokubola aziyona impahla. Bangabasizi besistimu. Ukuhluleka kwengxenye eyodwa ye-Alloy 400 kumojuli yokulawula ulwandle kungabangela u-$2.4M ezindlekweni zesikhathi sokuphumula. Kungakho siphatha wonke ama-oda—kusuka ku-prototype kuya ekukhiqizweni—njengomsebenzi obalulekile. Sithumela izingxenye ze-Alloy 400 eNyakatho Melika, eYurophu, naseNingizimu-mpumalanga ye-Asia ezinokulandeleka okuphelele kwezinto ezibonakalayo, isitifiketi sobukhulu, nokusekelwa kobunjiniyela okwakhelwe kusicaphuno—akungezwe njengenkokhiso.
Ngezicelo ezidinga ukungabikho kubucayi ekuphikeleni ukugqwala, ukuthembeka kohlangothi, nokungaguquguquki kwensimbi—Izingxenye ze-Alloy 400 ezivela ku-QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. aklanyelwe ukusebenza, aqinisekiswa ukuze akufakazele, futhi alethwe ukuze kugcinwe amasistimu esebenza.
