Iyo ba injeniyeri bagaragaje 17-4 PH gushora imari kubintu byumuvuduko mwinshi, amazu ya pompe, cyangwa shitingi ya winch, ntabwo bahitamo ibikoresho-bahitamo ibahasha yo gukora. Ibahasha isaba kugenzura neza, microstructure ya martensitike ihamye, hamwe na zeru zeru kubirwanya ruswa nyuma yo kuvura ubushyuhe. Ibishingwe bike bitanga ibyo kwizerwa. Benshi bananiwe kumwanya umwe wingenzi: inzibacyuho kuva mubishashara kugeza igice cya nyuma cya geometrie munsi ya 1050 ° C ihinduka-leta ikomeye.
Kuki 17-4 PH ishoramari isaba ibirenze gushinga
Twataye ibice birenga 2,300 bidasanzwe 17-4 bya PH kuva muri 2019-indiba zo mu nyanja yo mu nyanja ya ruguru, ibyuma bya silinderi ya pompe hydraulic igera kuri bar 420, hamwe na shitingi ya shitingi yo gucukura ibinyabiziga. Ibyo twize byihuse: intsinzi ishingiye kubintu bitatu bitavugwaho rumwe - ntabwo ari bibiri, ntabwo bine.
Ubwa mbere, ibikoresho fatizo bikurikirana bigomba kwaguka birenze ibyemezo byurusyo. Turagerageza ubushyuhe bwinshi kubintu bya delta ferrite mbere yo gusuka. Kubera iki? Kuberako> 0.8% delta ferrite muri as-cast itera igisubizo cyo gusaza kutaringaniye mugihe cyo kuvura H900-kandi byica ubuzima bwumunaniro mubice bizunguruka.
Icya kabiri, shell mold firing profile igomba guhuza na alloy's thermal expansion curve. Ubusanzwe 1100 ° C ifata imirimo kuri 316 - ariko 17-4 PH isaba kuzamuka (120 ° C / h kugeza 950 ° C, hanyuma 60 ° C / h kugeza 1050 ° C) kugirango wirinde microcracking muri 2mm yambere yubuso. Twabibonye ubwacu mugihe igishushanyo cy '"kimwe" cyumukiriya cyananiwe kwipimisha umunyu-spray nyuma yo gutunganya: intandaro yari shell overfire, ntabwo ivura ubushyuhe.
Icya gatatu, kugabanuka nyuma yo guta umutwe ntabwo ari ubushake-ni itegeko * mbere * gutunganya imashini iyo ari yo yose. Guhangayikishwa n'ibisigisigi muri 17-4 PH bigoreka mugihe cya CNC, cyane cyane mumazu yoroheje cyane hamwe na GD&T guhamagara kurenza ± 0.025 mm. Dukoresha 620 ° C / 2hr yumuyaga ukonje nyuma yo guhungabana. Gusimbuka byongeweho 12-18% ibisakuzo mugenzura ryanyuma.
Niki Gishyiraho Nukuri 17-4 PH Ishoramari Ritera Uruganda
Bamwe mubatanga ibicuruzwa biyita "kabuhariwe" kuko bafite umurongo wa ceramic. Umwihariko nyawo werekana aho abandi baca inguni:
- Mbere yo gusuka ibyuma bisubiramo.
- Mubikorwa bya CMM kugenzura mubyiciro bitatu: Nyuma yo gutunganya nabi (gufata kugoreka), nyuma yo kurangiza gutunganya (kubwo kubahiriza GD&T), na nyuma ya passivation ya nyuma (kwemeza ubusugire bwubuso).
- Nta bushyuhe "busanzwe" buvura: Buri gice kibona igihe cyihariye cyo gushira ukurikije igice cyacyo kinini - kibarwa ukoresheje amakuru ya Jominy gukomera, ntabwo ari rusange.
Iyi disipuline ifite akamaro kanini kubice bikora nka piston pompe ya silinderi. Umwe mu Banyaburayi OEM yatangaje ko ubuzima bwa serivisi bumara 40% nyuma yo kuva muri 17-4 PH bahanganye baterana iwacu - bitatewe no gukomera gukomeye, ariko kubera ko imihangayiko yo hasi yacu yagabanutse kugabanya micro-crack yatangijwe na sikeli.
Ibyiza bya Vertical Integrated Advantage Ntushobora Gutanga hanze
Gushora imari byonyine ntabwo byemeza imikorere. Icyuho nyacyo ni ukuboko hagati yo gukina no gutunganya. Twabonye inshuro nyinshi aho umubiri wa 17-4 wapanze neza umubiri wa volve mugihe cyo guhinduka kuko umukanishi yakoresheje coolant idahuye na microstructure ishaje - cyangwa ikibi, yasibye intambwe yanyuma yo gutuza.
Ikigo cyacu gikora urunigi rwuzuye: guhimba ibishishwa, gusuka gufashwa na vacuum, gukonjesha kugenzura, gukemura ibibazo, gusaza H900, gusya CNC no guhindukira, amashanyarazi, hamwe no gupima helium - byose munsi yinzu imwe ISO 9001: 2015. Nta muntu wa gatatu utunganya ubushyuhe. Nta maduka yo hanze. Nta bikoresho byifashishwa bihinduka.
Igenzura ritanga ibisubizo bisubirwamo. Kuri AMS 5387 cobalt alloy nozzles, tugera kuri ± 0.015 mm uburebure bwurukuta rwuburebure bwa mm 120. Kubikoresho bya T800 bishingiye kuri pompe, dukomeza Ra ≤ 0.4 µm kurangiza hejuru yinzira yimbere - ingenzi mukurwanya cavitation.
Guhitamo Uruganda rwawe rwa 17-4 PH Ishoramari: Ibibazo bitatu byerekana ukuri
Mbere yo gusinya NDA, baza ibi - bidakurikiranye, ahubwo bisubire inyuma:
- "Nyereka ibiti byawe bitatu bya nyuma 17-4 bya PH bivura ibiti kubice bifite uburebure burenze mm 50. Shyira ahagaragara igipimo cyo hejuru, gufata igihe, hamwe nuburyo bukonje bwakoreshejwe."
- "Ni ikihe gipimo ntarengwa cyemewe cyo kwangirika hagati y'isi (kuri ASTM A262 Imyitozo E) kuri H900 ivurwa 17-4 PH - kandi nigute wabigenzura kuri buri cyiciro?"
- "Niba igishushanyo cyanjye gisaba ASME B16.34 Icyiciro cya 900 cy'ingutu, ni ubuhe buryo bwanditse bwo kwemeza igitutu giturika ku ngingo ya mbere?"
Niba ibisubizo birimo "dukurikiza amahame yinganda" cyangwa "uwaduhaye ibyo akora," genda. Niba bakuyemo itanura ryigihe-nyacyo, berekana amafoto yerekana imbibi zimbuto, kandi bakerekana inyandiko zabo mumazi ya hydrotest-komeza uvuge.
QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. ikora umurongo wihariye wa 17-4 PH ishora imari muri Qingdao, itezimbere ibice bisaba uburinganire bwimiterere na geometrie yuzuye. Uburyo bwabo bufata buri gukina ntabwo ari ishusho yicyuma - ahubwo ni sisitemu iremereye itegereje gukora. Iyo mitekerereze itandukanya uruganda numufatanyabikorwa. Iyo porogaramu yawe ikora kuri 420 bar, ikazunguruka kuri 3000 RPM, cyangwa ikicara munsi yimyaka 25, itandukaniro ntabwo riri mumpapuro zabigenewe. Ari mubushuhe bwa mbere, cheque ya kane ya CMM, hamwe na test ya helium yanyuma-burigihe.
