Q500NH Steel ua deformation tswj cov lus qhia
1. Yog Q500nh no tau mus deformation thaum lub sijhawm ua?
Yog lawm,Q500nh(Ib tug loj-zog huab cua ib leeg rau 10025-5) tuaj yeem ua rau muaj kev puas tsuaj rau kev deformation thaum lub tshuab ua haujlwm, vuam, lossis tsim vim:
High Strength (>500 mpa yield): Yuav tsum muaj zog dua thaum txiav / khoov, muaj kev ntxhov siab ntxiv.
Cov pa roj carbon muaj sib npaug (CEV ~ 0.4-0.5): Txo kev sib tw weldability tab sis tej zaum tseem yuav ua rau muaj kev cuam tshuam cua sov hauv zos-bel) distortion.
Nyias hla-ntu: Ntau tus nquag mus rau buckling thaum lub sij hawm txias.
2. Kev ntsuas qhov tseem ceeb
(1) txiav & machining
Tuam Xaiv: Siv carbide-tipped cuab yeej nrog cov npoo ntse los txo cov rog.
Cua txias: Siv emulsion ua kom tiv thaiv kom tiv thaiv kev nthuav dav thermal.
Tsis: Tsawg pub tus nqi (<0.2 mm/rev for turning) and moderate speeds.
(2) vuam
Preheat: 100–150°C to minimize HAZ stress (critical for thickness >10 hli).
Vuam txoj kev: Siv cov txheej txheem tiv thaiv tsawg-cov txheej txheem tawm tswv yim (piv txwv li, cov hlau vuam nrog 80% ar + 20% ..ve).
Muaj kab muaj kev: Staggered vuam lossis cov txheej txheem rov qab-theem ua kom sib npaug kev ntxhov siab thermal.
(3) Txoj Kev (Dabtsi Yog Khoov / Dov)
Khaub Tawv: Txwv tsis pub luam tawm radius mus rau ntau dua los yog sib npaug rau 2 × cov khoom tuab (piv txwv li ntau dua lossis sib npaug rau 10 hli phaj).
Kev Sib Tw Kub: Tshav kub txog 850-950℃(zam dhau 1,100℃los tiv thaiv cov noob qoob loo).
(4) Kev Ua Haujlwm Tshaj Tawm Kev Nyab Xeeb
Kev Kho Cua Sov: Kev ntxhov siab pab tau thaum 550-600℃rau 1-2 teev (rau qhov tseem ceeb rau kev ua taus).
Kev Siv Neeg Kho Tshuab: Peening lossis co kev hloov pauv kev ntxhov siab rau cov khoom loj.
3. Kev zam & Saib Xyuas
Huv: Tsawg dua lossis sib luag rau 1.5 hli / m² tom qab machining (ib leeg yog ooto 8512).
Tom qab Weld distortion: Siv jigs / fixtures rau clamp ntu thaum txias.
Tus yam ntxwv: Rau laser-txiav q500nh daim phiaj (12 hli tuab), deformation tuaj yeem txwv rau<0.5 mm/m by alternating cutting paths to distribute heat evenly.
4. Khoom Siv Cov Lus Qhia Tshwj Xeeb
Tsis txhob overheating: Q500Nh cov corrosion-resistant patina (ni-cu alloy txheej) tuaj yeem txwv siab dua 600 degree.
Daim ntawv muaj cai: Ua kom meej tias cov ntawv pov thawj zeb (MTCS) lees paubKev Cuam Tshuam Cov Mob Ntawm -20 Degree(yuav tsum tau siv cov qauv tsim qauv).
