Thaum tshav kub kub-resistant steel turboproizvodstve. Main yam ntxwv ntawm cov khoom

Thaum tshav kub kub resistant steels thiab alloys raws li ib tug tshwj xeeb ntawm kev tsim kho cov ntaub ntawv pib yuav tsum tau siv heev heev nyob rau hauv kev twb kev txuas nrog cov kev loj hlob ntawm turbine siv kev lag luam. Turbine li ib tug lub zog qhov chaw los yog transducer siv nyob rau hauv thermal hwj chim khoom, aircraft thiab nkoj xyaw. Kuj nyuam qhuav ib tug loj hlob ntawm cov roj turbine tsim rau hauv av dov Tshuag (cov tsheb thauj khoom, locomotives).

Nrog lub nce nyob rau hauv roj inlet kub yog txo kev noj roj ib chav tsev hwj chim. Nyob rau hauv no hais txog, nyob rau hauv ib tug ncaj luv luv lub sij hawm ntawm lub sij hawm muaj tshav kub-resistant hlau. Niaj hnub no cov ntaub ntawv nyob rau hauv turbine designs yog txog li 50% ntawm tag nrho cov ceeb thawj.

Thaum tshav kub kub tiv steel yog cov ntaub ntawv uas ua hauj lwm tsis tsuas yog nyob rau txhawb kub. Nws yog muaj feem xyuam nyob rau hauv lub mob slozhnonapryazhennogo lub xeev rau ib tug predetermined lub sij hawm lub sij hawm. Lub hom yam ntxwv uas yuav txiav txim qhov kev kawm ntawm hais tias cov ntaub ntawv uas yog high-kub zog.

Nyob rau hauv no zoo tsis to taub cov ua ua rau kev puas tsuaj ntawm ib tug muab deformation kev nyuaj siab uas muaj peev xwm sawv txhawb nqa cov hlau cov ntaub ntawv uas nyob rau hauv ib tug kev tsim qauv duab rau ib tug muab kub rau ib lub sij hawm lub sij hawm. Thaum lub stipulated sij hawm thiab voltage, tus yam ntxwv hu ua tensile zog (long-term). Yog hais tias nws yog txiav txim deformation, lub sij hawm thiab kev nyuaj siab, qhov zoo tshaj yog hu ua creep zog.

Thaum tshav kub kub-resistant steels muaj, dua li lub dag lub zog, ductility, uas yuav tsum tau khaws cia txog rau thaum xaus ntawm lub lag luam. Nyob rau hauv cov nqe lus ntawm plasticity reserves yog kwv yees li cia siab rau ntawm hlau ua hauj lwm.

Qhov tseem ceeb cov yam ntxwv ntawm cov khoom yog thais rhiab heev. Qhov no zoo yog txiav txim nyob rau hauv daim ntawv ntawm cov kev sib raug zoo tom qab lub sij hawm kom txog rau thaum tsis ua hauj lwm ntawm tus thiab Notched nrws kuaj nyob rau tib lub kub stresses. Thaum tshav kub kub resistant steels xam tau tias yog loog thais ntawm ib tug piv sib npaug zos los yog ntau dua kev sib sau.

Vim lub fact tias cov sawv mus rau lub khiav hauj lwm kub tshwm sim thaum lub sij hawm, nyob rau lub lag luam raws nkaus Ii thaum pib, feem ntau yog ib tug ambient kub, ib tug zoo kawg mloog yog them rau qhov tseem ceeb ntawm elasticity thiab lub dag lub zog. Nws yog ib qho tseem ceeb uas qhov tseem ceeb nyob rau ntawm cov khoom nyob rau chav tsev kub twb siab txaus.

Vim lub fact tias lub tshav kub resistant steels slozhnonapryazhennogo ua nyob rau hauv ib tug mob uas yog yus muaj los ntawm qhov kev hloov nyob rau hauv lub kos npe rau thiab magnitude ntawm load, tsis tseem ceeb thiab ib tug siab qaug zog kuj.

Niaj hnub no cov kev siv ntawm nyuab kev daws teeb meem rau cov creation ntawm lug yuav tsum muaj hlau ntaub ntawv muaj siab hauj yam ntxwv. Yog li, nyob rau hauv qhov siv thiab ua hniav nyob rau hauv cov roj turbine xyaw siv forging, precision forging, polishing, neeg kho tshuab ua qauv thiab tiav lawm cov khoom rods, precision casting, polishing. Zus tau tej cov combustion lag ntawm tshav kub-resistant hlau los xij yog ua li cas siv ib tug compact, txias txoj kev, chaw welding thiab lwm yam technologies. Feem ntau hom kev kawm yog Vuam electrode txhuam diffusion tsevneeg, brazing khoom. Tag nrho cov manipulations yuav tsum tau zoo cov yam ntxwv ntawm cov khoom siv.

Superalloys thiab steel inherently muaj peev xwm tswj kom muaj zog lub zog ntsuas raws li mus rau ua hauj lwm thiab mus ua kub. Qhov no, nyob rau hauv lem, imposes ib lub cim rau tag nrho cov hlau redistribution technology siv, nrog rau cov deformation ntawm lub ingot thiab ua ntej mus rau qhov kawg finishing hauj lwm, cov khoom mus rau yuav tsum tau nto smoothness thiab xav ntev.