Txoj Kev Ntau Lawm
CrMo alloy steel yeeb nkab yog tsim los ntawm plaub txoj kev loj. Kub- dov seamless yeeb nkab yog qhov ntau tshaj plaws, tsim los ntawm kev tho, dov, thiab qhov loj me, thiab nws ua haujlwm siab - kub siab - cov kav dej. Kev kos duab txias ua rau siab -precision, me- txoj kab uas hla cov yeeb nkab rau hydraulic thiab mechanical service. Forging tsim tshwj xeeb tuab-walled thiab irregular Cheebtsam xws li tees thiab flanges. Welded CrMo yeeb nkab, ua los ntawm submerged arc vuam lossis lwm yam txheej txheem, ua haujlwm loj - txoj kab uas hla qis - cov kab siab uas qhov vuam yog tswj nruj heev. Txoj kev yog xaiv los ntawm qhov loj me, qhov xav tau ntawm qhov ntev, thiab kev pabcuam.
Kub-Tom ntej cov ntsiab lus
Cov txheej txheem kub - dov rau CrMo steel yog tswj nyob ib ncig ntawm ob qhov kub thiab txias: qhov cua kub ntawm 1200 txog 1250 C thiab ua tiav qhov kub ntawm qhov tsawg kawg nkaus 850 C. Cov ciam teb no tsis txhob muaj cov nplej coarsening thiab kev sib cais ntawm cov hlau alloying. Tom qab dov, cov yeeb nkab yog quenched hauv online los yog huab cua-cooled, ces tempered rau optimize lub zog -toughness tshuav ntawm qib. Qhov tseeb qhov tseeb ntawm kub- dov CrMo yeeb nkab feem ntau yog hais txog ntxiv lossis rho tawm 1%, thiab qhov chaw raug tua- blasted lossis pickled kom tshem tawm cov nplai oxide. Rau cov raj boiler, ultrasonic thiab eddy - kev sim tam sim no yog siv los xyuas kom meej qhov zoo ntawm sab hauv.
Kev kos duab txias: qhov zoo thiab qhov txwv
Kev kos duab txias ua rau cov yeeb nkab nrog qhov tseeb qhov tseeb, nyob ib puag ncig IT8 rau IT9 qib, qhov ua tiav ntawm qhov chaw siab, thiab lub zog siab dua li cov khoom kub - dov vim kev ua hauj lwm hardening. Cov txheej txheem haum rau me me diameters, feem ntau hauv qab 150 hli, rau kev siv xws li lub tes tsho bearing thiab hydraulic kheej kheej. Cov kev txwv yog qhov txo qis plasticity thiab toughness los ntawm kev ua haujlwm txias, qhov xav tau ntawm annealing los kho cov khoom, cov khoom siv qis qis, thiab kev pheej hmoo ntawm tensile cracking hauv cov phab ntsa tuab. Drawn CrMo yeeb nkab yog feem ntau annealed tom qab kos duab thiab, qhov twg daim ntawv thov yuav tsum tau, hardened thiab tempered ua ntej xa.
Vuam xyaum
CrMo steel vuam xav tau kev qhuab qhia. Tsawg-hydrogen consumables yog yuav tsum tau, nrog electrodes xws li R307 (E5515-B2) rau 1Cr-}0.5Mo tsev neeg, thiab lub preheat yog teem ntawm 200 mus rau 300 C nrog ib tug tswj interpass kub. Tom qab-weld kev kho cua sov ntawm 600 mus rau 650 C ua raws li kev kub ntxhov- thaj tsam cuam tshuam thiab txo kev ntxhov siab. Rau cov phab ntsa tuab, nqaim- qhov sib txawv vuam lossis ntau- txheej txheej txheej txheej txheej txheej txheem kom txo tau cov cua sov nkag, thiab qhov zawj raug ntxuav kom huv si ua ntej vuam. Kev txias qeeb tom qab vuam txwv tsis pub hydrogen-induced cracking, thiab cov welds tseem ceeb raug tshuaj xyuas 100% los ntawm radiography lossis ultrasonics.
Kev xeem zoo
Kev tshuaj xyuas zoo ntawm CrMo yeeb nkab npog plaub qhov chaw. Tshuaj muaj pes tsawg leeg tsom xam pom qhov cua sov tiv thaiv qib txwv. Kev ntsuas cov cuab yeej siv tshuab suav nrog tensile, cuam tshuam, thiab hardness qhov tseem ceeb. Tsis yog-kev kuaj kev puas tsuaj siv ultrasonic kuaj rau sab hauv qhov tsis xws luag, radiography rau kev soj ntsuam vuam, thiab sib nqus- kuaj particle rau saum npoo tawg. High- qhov kub thiab txias kev ua haujlwm tau raug txheeb xyuas los ntawm kev kuaj nkag, uas lees paub qhov ntev - lub zog ntawm qhov kev pabcuam kub. Daim ntawv pov thawj zeb kuaj cov ntaub ntawv cov txiaj ntsig rau ntau, thiab rau kev pabcuam siab hom ntawv pov thawj raws li EN 10204 3.1 lossis 3.2.
Cov lus nug nquag
Q: CrMo steel yeeb nkab ua li cas?
Los ntawm kub dov, kos duab txias, forging, los yog vuam, nrog kub - dov seamless yeeb nkab feem ntau txoj kev rau siab - kub siab - kev pab cuam.
Q: Dab tsi kub tseem ceeb hauv kev kub dov?
Cov cua kub kub ntawm 1200 txog 1250 C thiab ua tiav qhov kub ntawm tsawg kawg yog 850 C, uas tsis txhob grain coarsening thiab alloy segregation.
Q: Dab tsi yog qhov kos duab txias siv rau hauv CrMo yeeb nkab?
High-precision, me- txoj kab uas hla cov yeeb nkab hauv qab li 150 mm, xws li hydraulic thooj voos kheej kheej thiab lub tes tsho, nrog cov yeeb nkab annealed tom qab kos duab.
Q: CrMo yeeb nkab welded li cas?
Nrog qis-hydrogen consumables, preheat ntawm 200 mus rau 300 C, post-weld kub kho ntawm 600 mus rau 650 C, thiab qeeb txias kom tsis txhob hydrogen cracking.
Q: Yuav ua li cas kuaj ntawm CrMo yeeb nkab?
Kev soj ntsuam tshuaj, tensile, cuam tshuam, thiab hardness tests, ultrasonic, radiographic, thiab magnetic- kuaj particle, thiab creep test rau siab - kub kev pab cuam.
Q: Vim li cas qhov kev kuaj creep tseem ceeb rau CrMo yeeb nkab?
Nws txheeb xyuas lub sijhawm ntev - lub zog ntawm qhov kev pabcuam kub, uas yog cov cuab yeej uas qib raug xaiv rau hauv siab - cov nroj tsuag kub.
