Nug 30 phau ntawv
Txoj kev quenching:
1. Ib leeg ua kua quenching - txias txheej txheem nyob rau hauv ib tug quenching nruab nrab, ib tug kua quenching microstructure kev nyuaj siab thiab thermal stress kuj loj, quenching deformation yog loj.
2. Ob chav ua kua quenching - lub hom phiaj: ceev txias ntawm 650 ℃ ~ Ms, kom V> Vc, txias maj mam hauv qab Ms kom txo cov ntaub so ntswg stress.Carbon steel: dej ua ntej roj.Alloy steel: roj ua ntej huab cua.
3. Fractional quenching - lub workpiece raug tshem tawm thiab nyob twj ywm ntawm qhov kub thiab txias kom qhov kub ntawm sab hauv thiab sab nraud ntawm lub workpiece zoo ib yam, thiab tom qab ntawd cov txheej txheem cua txias.Fractional quenching yog M theem kev hloov pauv hauv huab cua txias, thiab qhov kev ntxhov siab sab hauv me me.
4. Isothermal quenching - yog hais txog bainite transformation tshwm sim nyob rau hauv lub bainite kub cheeb tsam isothermal, nrog txo sab hauv kev nyuaj siab thiab me me deformation.Lub hauv paus ntsiab lus ntawm quenching txoj kev xaiv yuav tsum tsis tsuas yog ua tau raws li qhov yuav tsum tau ua, tab sis kuj txo cov quenching kev nyuaj siab kom deb li deb. ua tau kom tsis txhob quenching deformation thiab tawg.
Chemical meteorological deposition feem ntau yog CVD txoj kev.Cov tshuaj tiv thaiv nruab nrab uas muaj cov txheej txheem txheej txheej yog vaporized ntawm qhov kub thiab txias, thiab tom qab ntawd xa mus rau hauv qhov kub-kub cov tshuaj tiv thaiv chamber kom tiv tauj lub workpiece nto los tsim cov tshuaj tiv thaiv kub kub.Alloy los yog hlau thiab nws cov tebchaw yog precipitated thiab tso rau ntawm workpiece nto los ua txheej.
Cov yam ntxwv tseem ceeb ntawm CVD txoj kev:
1. Muaj peev xwm tso tau ntau yam crystalline lossis amorphous inorganic zaj duab xis cov ntaub ntawv.
2. High purity thiab muaj zog sib sau ua ke quab yuam.
3. Ntos sedimentary txheej nrog ob peb pores.
4. Zoo uniformity, yooj yim cov cuab yeej thiab txheej txheem.
5. Cov tshuaj tiv thaiv kub.
Daim ntawv thov: los npaj ntau yam ntawm cov yeeb yaj kiab rau saum npoo ntawm cov ntaub ntawv xws li hlau thiab hlau, tawv alloy, cov hlau tsis muaj hlau thiab inorganic tsis yog hlau, feem ntau yog insulator zaj duab xis, semiconductor zaj duab xis, conductor thiab superconductor zaj duab xis thiab corrosion kuj.
Lub cev thiab huab cua deposition: ib tug txheej txheem nyob rau hauv uas gaseous tshuaj yog tso ncaj qha rau ntawm lub workpiece nto mus rau hauv cov khoom films, hu ua PVD method.Muaj peb txoj kev yooj yim, namely, nqus evaporation, sputtering thiab ion plating.Application: hnav resistant txheej, tshav kub. resistant txheej, corrosion resistant txheej, lubricating txheej, haumxeeb txheej hniav txheej.
Microscopic: strip qauv pom nyob rau hauv ib lub microscopic electron microscope, hu ua fatigue bands los yog qaug zog striations.Kev qaug zog strips muaj ductile thiab brittle ob hom, qaug zog sawb muaj ib tug tej qhov sib nrug, nyob rau hauv tej yam kev mob, txhua kab txaij sib raug mus rau ib tug kev nyuaj siab voj voog.
Macroscopic: feem ntau, nws muaj cov yam ntxwv ntawm cov pob txha tawg tsis muaj macroscopic deformation pom ntawm qhov muag liab qab.Tej yam qaug zog fractures muaj qhov tawg qhov chaw, tawg propagation zone thiab zaum kawg transient fracture zone.Qhov qaug zog qhov chaw yog tsawg tiaj tus, tej zaum ci daim iav, qhov tawg propagation cheeb tsam yog puam los yog plhaub qauv, ib co ntawm cov qaug zog qhov chaw uas tsis sib npaug qhov sib npaug sib npaug. arcs ntawm qhov nruab nrab ntawm lub voj voog.Lub microscopic morphology ntawm lub caij nyoog tawg tsam yog txiav txim los ntawm tus yam ntxwv load hom thiab qhov loj ntawm cov khoom, thiab tej zaum yuav dimple los yog quasi-dissociation, dissociation intergranular puas los yog sib tov zoo.
1 .Cracking: cov cua kub kub yog siab dhau lawm thiab qhov kub thiab txias tsis sib xws; tsis tsim nyog xaiv ntawm quenching nruab nrab thiab kub; Tempering tsis raws sij hawm thiab tsis txaus; Cov khoom muaj siab hardenability, tivthaiv segregation, tsis xws luag thiab ntau inclusion; Cov khoom tsis zoo tsim.
2. Cov tawv tawv tsis sib xws: tsis tsim nyog induction qauv; tsis sib xws cua sov; tsis sib xws; cov khoom siv tsis zoo (banded qauv, ib nrab decarbonization.
3. Nto melting: cov qauv inductor tsis tsim nyog; Cov khoom muaj nyob rau hauv cov ces kaum ntse, qhov, tsis zoo, thiab lwm yam .; Lub sij hawm cua sov yog ntev dhau lawm, thiab lub workpiece nto muaj kab nrib pleb.
Siv W18Cr4V piv txwv li, vim li cas nws zoo dua li cov khoom siv hluav taws xob zoo tib yam?W18Cr4V steel yog rhuab thiab quenched ntawm 1275 ℃ + 320 ℃ * 1h + 540 ℃ rau 560 ℃ * 1h * 2 zaug tempering.
Piv nrog rau cov tempered kub ceev hlau zoo tib yam, M2C carbides muaj ntau precipitated, thiab M2C, V4C thiab Fe3C carbides muaj loj dispersion thiab zoo uniformity, thiab li ntawm 5% mus rau 7% bainite muaj, uas yog ib qho tseem ceeb microstructure yam tseem ceeb rau kev kub ceev tempered kub ceev. steel kev ua tau zoo dua li qub tempered siab ceev steel.
Muaj cov huab cua endothermic, drip huab cua, ncaj lub cev huab cua, lwm qhov chaw tswj tau (nitrogen tshuab cua, ammonia decomposition cua, exothermic cua).
1. Endothermic cua yog cov roj nyoos sib xyaw nrog huab cua hauv ib qho kev faib ua feem, los ntawm cov catalyst ntawm qhov kub thiab txias, cov tshuaj tiv thaiv tsim muaj CO, H2, N2 thiab cov kab mob CO2, O2 thiab H2O cua, vim tias cov tshuaj tiv thaiv kom nqus cua sov, thiaj li hu ua endothermic cua lossis RX gas.Siv rau carburizing thiab carbonitriding.
2. Nyob rau hauv lub drip huab cua, methanol yog ncaj qha mus rau hauv lub cub tawg kom tawg, thiab cov cab kuj muaj CO thiab H2 yog generated, thiab ces nplua nuj tus neeg sawv cev yog ntxiv rau carburizing; Tsawg kub carbonitriding, tiv thaiv cua sov kaj quenching, thiab lwm yam.
3. Cov infiltration tus neeg saib xyuas xws li cov nkev thiab huab cua sib tov nyob rau hauv ib qho kev faib ua feem ncaj qha mus rau hauv lub cub tawg, nyob rau hauv high kub 900 ℃ cov tshuaj tiv thaiv ncaj qha generated carburizing cua. Cua sov tiv thaiv huab cua.Nitrogen - raws li huab cua rau siab carbon steel lossis bearing steel tiv thaiv cov nyhuv yog qhov zoo.Exothermic cua yog siv rau kev kho cua sov ntawm cov pa roj carbon tsawg, tooj liab lossis decarburization annealing ntawm malleable cam khwb cia hlau.
Lub Hom Phiaj: Cov khoom siv zoo thiab qhov cuam tshuam me me ntawm cov hlau nplaum tuaj yeem tau txais los ntawm isothermal quenching nyob rau hauv bainite hloov chaw tom qab austenitizing.Isothermal kub: 260 ~ 300 ℃ bainite qauv; Lub sab sauv bainite qauv yog tau ntawm 350 ~ 400 ℃.
Carburizing: feem ntau yog nyob rau saum npoo ntawm lub workpiece mus rau hauv cov txheej txheem ntawm carbon atoms, nto tempering martensite, residual A thiab carbide, lub hom phiaj ntawm qhov chaw yog los txhim kho cov nto carbon ntsiab lus, nrog siab hardness thiab siab hnav tsis kam, qhov chaw muaj A tej lub zog thiab siab toughness, yog li ntawd nws bears loj cuam tshuam thiab kev sib txhuam, uas tsis muaj carbon steel xws li 20CrMnTi, iav thiab piston tus pin feem ntau siv.
Nitriding: mus rau saum npoo ntawm infiltration ntawm nitrogen atoms, yog lub hardness nto, hnav tsis kam qaug zog lub zog thiab corrosion kuj thiab thermal hardness txhim kho, nto yog nitride, lub plawv tempering sorbsite, roj nitriding, kua nitriding, feem ntau siv 38CrMoAlA , 18 CrNiW.
Carbonitriding: carbonitriding tsis kub, ceev ceev, me me deformation ntawm qhov chaw.Qhov chaw microstructure yog zoo koob tempered martensite + granular carbon thiab nitrogen compound Fe3 (C, N) + me ntsis residual austenite.Nws muaj siab hnav tsis kam, qaug zog thiab compressive zog, thiab muaj tej yam corrosion kuj.Ntau siv nyob rau hauv hnyav thiab nruab nrab load zog ua los ntawm tsawg thiab nruab nrab carbon alloy hlau.
Nitrocarburizing: cov txheej txheem nitrocarburizing sai dua, qhov tawv tawv me ntsis qis dua li nitriding, tab sis qhov qaug zog ua haujlwm yog qhov zoo.Nws yog tsuas yog siv rau machining pwm nrog me me cuam tshuam load, siab hnav tsis kam, qaug zog txwv thiab me deformation. General steel qhov chaw, xws li Raws li cov pa roj carbon monoxide steel, alloy structural steel, alloy cuab yeej steel, grey cam khwb cia hlau, nodular cam khwb cia hlau thiab hmoov metallurgy, yuav ua tau nitrocarburized
1. Advanced technology.
2. Cov txheej txheem yog txhim khu kev qha, tsim nyog thiab ua tau.
3. Kev lag luam ntawm cov txheej txheem.
4. Kev nyab xeeb ntawm cov txheej txheem.
5. Sim siv cov txheej txheem cov cuab yeej nrog cov txheej txheem siab tshuab thiab automation.
1. Kev sib txuas ntawm kev siv tshuab txias thiab kub yuav tsum tau txiav txim siab tag nrho, thiab cov txheej txheem kev kho cua sov yuav tsum tsim nyog.
2. Txais siv thev naus laus zis tshiab kom deb li deb tau, piav qhia luv luv txog cov txheej txheem kev kho cua sov, ua kom luv luv lub voj voog ntau lawm.Raws li kev ua kom ntseeg tau cov qauv tsim nyog thiab kev ua tau zoo ntawm cov khoom, sim ua cov txheej txheem sib txawv lossis cov txheej txheem thev naus laus zis ua ke.
3. Qee lub sij hawm txhawm rau txhim kho cov khoom zoo thiab ua kom lub neej ntev ntawm cov khoom ua haujlwm, nws yog ib qho tsim nyog yuav tsum tau ua kom cov txheej txheem kho cua sov.
1. Lub coupling nrug ntawm inductor thiab lub workpiece yuav tsum nyob ze li sai tau.
2. Lub workpiece rhuab los ntawm sab nrauv phab ntsa ntawm lub kauj yuav tsum tau tsav los ntawm ib tug flux magnet.
3. Tsim cov workpiece sensor nrog cov ces kaum ntse kom tsis txhob muaj cov nyhuv ntse.
4. Offset phenomenon ntawm magnetic teb kab yuav tsum tau zam.
5. Sensor tsim yuav tsum sim ua kom tau raws li lub workpiece tuaj yeem tig thaum cua sov.
1. Xaiv cov ntaub ntawv raws li kev ua haujlwm ntawm qhov chaw, suav nrog hom thauj khoom thiab qhov loj me, ib puag ncig thiab hom tsis ua haujlwm loj;
2. Xav txog cov qauv, cov duab, qhov loj me thiab lwm yam ntawm qhov chaw, cov khoom siv nrog cov hardenability zoo tuaj yeem ua tiav los ntawm cov roj quenching lossis dej-soluble quenching nruab nrab kom yooj yim quenching distortion thiab tawg;
3. Nkag siab txog cov qauv thiab cov khoom ntawm cov khoom siv tom qab kev kho cua sov.Qee qib steel tsim rau ntau txoj kev kho cua sov yuav muaj cov qauv zoo dua thiab cov khoom siv tom qab kho;
4. Nyob rau hauv lub ntsiab lus ntawm kev ua kom cov kev pab cuam kev ua tau zoo thiab lub neej ntawm cov khoom, cov txheej txheem kev kho cua sov yuav tsum tau yooj yim npaum li sai tau, tshwj xeeb tshaj yog cov ntaub ntawv uas yuav cawm tau.
1. Casting kev ua tau zoo.
2. Siab machining kev ua tau zoo.
3. Machining kev ua tau zoo.
4. Kev ua haujlwm vuam.
5. Kev kho cua sov txheej txheem kev ua tau zoo.
Decomposition, adsorption, diffusion peb kauj ruam.Qhov kev thov ntawm segmental tswj txoj kev, compound infiltration kho, kub diffusion, siv cov ntaub ntawv tshiab kom ceev cov txheej txheem diffusion, tshuaj infiltration, lub cev infiltration; Tiv thaiv lub workpiece nto oxidation, conducive rau diffusion, kom peb cov txheej txheem sib koom ua ke, txo qhov chaw ua haujlwm kom ua cov txheej txheem carbon dub, ua kom cov txheej txheem ntawm carburizing, kom ntseeg tau tias cov txheej txheem hloov pauv tau dav dua thiab zoo dua cov txheej txheem infiltration; Los ntawm qhov chaw mus rau qhov chaw, qhov kev txiav txim yog hypereutectoid, eutectoid, hyperhypoeutectoid, primordial hypoeutectoid.
Hnav hom:
Adhesion hnav, abrasive hnav, corrosion hnav, tiv taus qaug zog.
Txoj kev tiv thaiv:
Rau cov nplaum hnav, tsim nyog xaiv ntawm kev sib txhuam cov khoom siv; Siv kev kho deg kom txo cov kev sib txhuam coefficient lossis txhim kho qhov tawv tawv; Txo kev sib cuag compressive kev ntxhov siab; txo qhov roughness ntawm qhov chaw.Rau abrasive hnav, ntxiv rau txo qhov kev sib cuag siab thiab zawv zawg kev sib txhuam nyob deb ntawm tus tsim ntawm lubricating roj pom cov cuab yeej kom tshem tawm cov abrasive, tab sis kuj tsim nyog xaiv cov ntaub ntawv siab hardness; Lub hardness ntawm cov ntaub ntawv sib txhuam cov ntaub ntawv tau txhim kho los ntawm kev kho cua sov thiab nto ua hauj lwm hardening.Rau corrosive hnav, xaiv oxidation resistant cov ntaub ntawv; Deg txheej; xaiv ntawm corrosion resistant cov ntaub ntawv; Electrochemical tiv thaiv; Cov kev ntxhov siab concentration ntawm tensile kev nyuaj siab yuav txo tau thaum corrosion inhibitor ntxiv.Stress nyem annealing; Xaiv cov ntaub ntawv uas tsis rhiab heev rau kev nyuaj siab corrosion; hloov lub nruab nrab mob.Rau kev sib cuag qaug zog, txhim kho cov khoom hardness; txhim kho Lub purity ntawm cov khoom, txo cov kev suav nrog; Txhim kho cov tub ntxhais lub zog thiab hardness ntawm qhov chaw; Txo qhov roughness ntawm qhov chaw; Txhim kho cov viscosity ntawm cov roj lubricating kom txo tau qhov kev txiav txim.
Nws yog tsim los ntawm loj (equiaxed) ferrite thiab siab carbon cheeb tsam A.
Common pob retreat: nce hardness, txhim kho machinability, txo quenching distortion cracking.
Isothermal pob regression: siv rau cov cuab yeej carbon siab, cov cuab yeej hlau alloy.
Lub voj voog rov qab: siv rau cov cuab yeej carbon steel, alloy cuab yeej steel.
1. Vim yog cov ntsiab lus qis ntawm cov hlau hypoeutectoid, cov qauv qub P + F, yog tias qhov kub thiab txias qis dua Ac3, yuav muaj qhov tsis sib haum F, thiab yuav muaj qhov muag muag tom qab quenching.Rau eutectoid steel, yog tias qhov kub thiab txias. yog siab dhau heev lawm, ntau dhau K 'solve, nce tus nqi ntawm daim ntawv M, yooj yim rau deformation thiab cracking, nce tus nqi ntawm A', ntau heev K' yaj, thiab txo cov hnav tsis kam ntawm hlau.
2. Qhov kub ntawm eutectoid hlau yog siab dhau lawm, qhov nyiam ntawm oxidation thiab decarbonization nce, yog li ntawd cov hlau nto ntawm cov hlau tsis sib xws, Ms qib sib txawv, ua rau quenching cracking.
3. Xaiv lub quenching kub Ac1 + (30-50 ℃) tuaj yeem khaws cov undissolved K' los txhim kho cov hnav tsis kam, txo cov pa roj carbon ntsiab lus ntawm matrix, thiab ua kom lub zog plasticity thiab toughness ntawm cov hlau.
Cov nag lossis daus tsis sib xws ntawm ε thiab M3C ua rau nag lossis daus ntawm M2C thiab MC ntau dua nyob rau hauv thaj tsam ntawm qhov kub thiab txias, uas txhawb kev hloov pauv ntawm qee qhov seem austenite rau hauv bainite thiab txhim kho lub zog thiab tawv.
ZL104: cam khwb cia txhuas, MB2: deformed magnesium alloy, ZM3: cam khwb cia magnesium, TA4: α titanium alloy, H68: tooj dag, QSN4-3: tin tooj dag, QBe2: beryllium tooj dag, TB2: β titanium alloy.
Fracture toughness yog cov cuab yeej ntsuas ntsuas qhov muaj peev xwm ntawm cov khoom siv los tiv thaiv kev puas tsuaj.Yog K1 & gt; K1C, qhov kev ntxhov siab tsis tshua muaj pob txha tawg tshwm sim.
Theem transformation yam ntxwv ntawm grey cam khwb cia hlau piv nrog steel:
1) cam khwb cia hlau yog fe-C-Si ternary alloy, thiab eutectoid transformation tshwm sim nyob rau hauv ib tug dav kub ntau yam, uas muaj ferrite + austenite + graphite;
2) graphitization txheej txheem ntawm cam khwb cia hlau yog ib qho yooj yim mus nqa tawm, thiab ferrite matrix, pearlite matrix thiab ferrite + pearlite matrix ntawm cam khwb cia hlau yog tau los ntawm kev tswj cov txheej txheem;
3) Cov ntsiab lus carbon ntawm A thiab cov khoom hloov pauv tuaj yeem hloov kho thiab tswj tau ntau yam los ntawm kev tswj cov austenitizing kub cua sov, rwb thaiv tsev thiab cua txias;
4) Piv nrog cov hlau, qhov sib txawv ntawm cov pa roj carbon atoms ntev dua;
5) Kev kho cua sov ntawm cov cam khwb cia hlau tsis tuaj yeem hloov pauv cov duab thiab kev faib tawm ntawm graphite, tab sis tuaj yeem hloov pauv cov qauv sib sau ua ke thiab cov khoom.
Kev tsim cov txheej txheem: tsim cov A crystal nucleus, kev loj hlob ntawm A grain, kev tawg ntawm cov cementite residual, homogenization ntawm A; yam tseem ceeb: cua kub, tuav lub sij hawm, cua kub ceev, steel muaj pes tsawg leeg, thawj qauv.
Txoj kev: subsection control method, compound infiltration treatment, high temperature diffusion, siv cov ntaub ntawv tshiab kom ceev cov txheej txheem diffusion, tshuaj infiltration, lub cev infiltration.
Thaum tshav kub kub hloov hom: conduction tshav kub hloov, convection tshav kub hloov, hluav taws xob hloov hluav taws xob (lub tshuab nqus tsev vacuum saum 700 ℃ yog hluav taws xob hloov hluav taws xob).
Lub koom haum dub yog hais txog cov pob dub, cov siv tawv dub thiab cov webs dub.Yuav kom tiv thaiv qhov pom ntawm cov ntaub so ntswg dub, cov ntsiab lus nitrogen hauv txheej permeable yuav tsum tsis txhob siab txaus, feem ntau ntau dua 0.5% yog qhov ua rau cov nqaij tawv dub; Cov nitrogen. cov ntsiab lus nyob rau hauv cov txheej permeable yuav tsum tsis txhob tsawg dhau, txwv tsis pub nws yog ib qho yooj yim rau tsim tortenite network.In thiaj li yuav inhibit lub torstenite network, qhov sib ntxiv ntawm ammonia yuav tsum yog nruab nrab.Yog tias cov ntsiab lus ammonia siab dhau lawm thiab cov dej lwg ntawm lub qhov cub hluav taws xob txo qis, cov ntaub so ntswg dub yuav tshwm sim.
Txhawm rau txwv tsis pub cov tsos ntawm torstenite network, quenching cua sov kub tuaj yeem tsim kom tsim nyog los yog qhov nruab nrab cua txias uas muaj peev xwm ua kom txias tuaj yeem siv tau.Thaum qhov tob ntawm cov ntaub so ntswg dub tsawg dua 0.02mm, txhaj tshuaj peening yog siv los kho nws.
Cua sov txoj kev: induction cua sov quenching muaj ob txoj kev ntawm ib txhij cua sov quenching thiab tsiv cua sov mus tas li quenching, nyob ntawm seb cov khoom tej yam kev mob thiab qhov chaw hom.Lub zog tshwj xeeb ntawm ib txhij cua sov yog feem ntau 0.5 ~ 4.0 KW / cm2, thiab lub zog tshwj xeeb ntawm mobile cua sov yog Feem ntau ntau dua 1.5 kW / cm2.Ntev ncej qhov chaw, tubular puab qhov quenching qhov chaw, nruab nrab modulus iav nrog dav cov hniav, sawb qhov chaw txais yuav quenching tas li; Loj iav txais ib tus hniav tas li quenching.
Cua sov Parameters:
1. Cov cua kub cua sov: Vim yog qhov kub ceev induction cua sov, qhov quenching kub yog 30-50 ℃ siab tshaj qhov kev kho cua sov dav dav kom ua rau cov ntaub so ntswg hloov pauv tag nrho;
2. Lub sij hawm cua sov: raws li cov kev xav tau, cov ntaub ntawv, cov duab, qhov loj, zaus tam sim no, lub zog tshwj xeeb thiab lwm yam.
quenching txias txoj kev thiab quenching nruab nrab: quenching txias txoj kev ntawm quenching cua sov feem ntau yog siv tshuaj tsuag txias thiab ntxeem tau txias.
Tempering yuav tsum tau raws sij hawm, tom qab quenching qhov chaw nyob rau hauv 4h tempering.Common tempering txoj kev yog self-tempering, rauv tempering thiab induction tempering.
Lub hom phiaj yog ua kom muaj kev ua haujlwm siab thiab nruab nrab zaus fais fab mov hauv lub xeev resonant, kom cov cuab yeej ua si ntau dua.
1. Kho cov hluav taws xob tsis zoo ntawm cov cua kub zaus.Raws li cov xwm txheej ntawm 7-8kV tsis tshua muaj hluav taws xob load, kho qhov sib txuas thiab tawm tswv yim txoj hauj lwm ntawm lub tes tuav kom qhov sib piv ntawm lub rooj vag tam sim no thiab anode tam sim no 1: 5-1: 10, thiab tom qab ntawd nce qhov hluav taws xob anode mus rau qhov kev pab cuam voltage, ntxiv kho cov hluav taws xob tsis zoo, kom cov channel voltage hloov mus rau qhov yuav tsum tau muaj, qhov zoo tshaj plaws match.
2. Kho cov hluav taws xob tsis sib xws ntawm qhov nruab nrab zaus cua sov, xaiv qhov tsim nyog quenching transformer lem piv thiab capacitance raws li qhov loj ntawm qhov chaw, cov duab hardening cheeb tsam ntev thiab inductor qauv, kom nws tuaj yeem ua haujlwm hauv lub xeev resonance.
Dej, dej ntsev, dej alkali, cov khoom siv roj, ntsev, polyvinyl cawv, trinitrate tov, dej-soluble quenching tus neeg saib xyuas, tshwj xeeb quenching roj, thiab lwm yam.
1. Kev cuam tshuam ntawm cov ntsiab lus carbon: nrog kev nce ntawm cov ntsiab lus carbon hauv hypoeutectoid steel, kev ruaj ntseg ntawm A nce thiab C nkhaus txav mus; Nrog rau qhov nce ntawm cov ntsiab lus carbon thiab unmelted carbides nyob rau hauv eutectoid steel, stability ntawm A txo thiab cov nkhaus ntawm C hloov txoj cai.
2. Kev cuam tshuam ntawm cov ntsiab lus alloying: Tsuas yog Co, tag nrho cov ntsiab lus hlau nyob rau hauv cov kua hauv lub xeev txav txoj cai nyob rau hauv C nkhaus.
3.A kub thiab tuav lub sij hawm: Qhov siab dua qhov A kub yog, lub sijhawm tuav ntev dua, qhov ntau dua cov carbide yaj, qhov coarser A grain yog, thiab nkhaus ntawm C txav mus rau sab xis.
4. Kev cuam tshuam ntawm cov ntaub so ntswg qub: Lub thinner cov ntaub so ntswg yog qhov yooj yim dua kom tau txais cov qauv A, kom lub CURVE ntawm C txav mus rau sab xis thiab Ms txav mus.
5. Kev cuam tshuam ntawm kev ntxhov siab thiab kev nyuaj siab ua rau C nkhaus txav mus rau sab laug.
Post lub sij hawm: Sep-15-2021
- Tom ntej: Stainless hlau yog dab tsi?
- Yav dhau los: Cov neeg ua haujlwm nyob