1. Dab tsi yog 519 9262 cov yeeb nkab steel ua los ntawm?
519 9262 yog qhov siab {1} {} {} {% {{- 0.25% Molybdenum). Nws yog ib qho nruab nrab-rau-siab carbon chromium-molybdenum hlau. Los ntawm quenching thiab tempering kub kev kho mob (quenching thiab tempering), nws ua tiav qhov sib npaug ntawm lub zog siab thiab tawv, ua kom haum rau cov neeg kho tshuab ntxhov siab heev.
2. Dab tsi yog nws cov yam ntxwv ua haujlwm tseem ceeb?
Lub zog siab: Tensile lub zog ncav 900-1100 MPa, tawm kom muaj zog dua lossis sib npaug nrog 700 MPa.
Cov hnav zoo heev: Cov chromium - molybdenum alloy txhim kho nto hardness thiab hnav tsis kam.
Kev kho cua sov tau sib xyaw tau: haum rau quenching, tempering, thiab kev ua haujlwm ntawm carburizes.
3. Nws cov ntawv thov raug yog dab tsi?
Cov Machinery hnyav: excavator pins, crane boom txuas txuas.
Kev lag luam automotive: high - Ua haujlwm tsav tsheb Shafts thiab cov khoom loj.
Cov Khoom Siv Hluav Taws Xob: Roj Laum Caws thiab hnav -} Cov khoom tivthaival rau tsuas Machinery.
4. Cov teeb meem tseem ceeb yuav tsum tau txiav txim siab thaum ua haujlwm?
Vuam: preheating rau 250 {{{{- 350℃kawm, ua raws los ntawm kev ua kom qeeb tom qab vuam. Cov hluav taws xob qis (xws li E8018-B2) tau pom zoo.
Machining: Lub hardness nyob rau hauv lub sij hawm quenched thiab tempered lub xeev yog tus siab (HRC 28-35), yog li cov cuab yeej carbide tau pom zoo.
Kev kho cua sov: zam kev kub siab, uas yuav ua rau cov nplej zom. Qhov kub npau taws yuav tsum tau qhia meej meej (feem ntau 500-600 degree).
5. Yuav ua li cas yog tau txheeb xyuas qhov tseeb tau raws cov qauv?
Kev Kuaj Ntsuas: Spectroscopic Kev Tshawb Xyuas pom tseeb tias CR thiab mo cov ntsiab lus ntsib ASTM A519 qhov yuav tsum tau ua.
Kev Kuaj Me: Tensile Kev Kuaj thiab Kev Ntsuas Kuaj (xws li Charpy V {{} tsis paub meej lub zog thiab tawv.
Tsis - Kev sim: Ultrasonic kev kuaj (tr) lossis kev sim ua kom pom kev sab hauv.
