Taw qhia rau kev ua haujlwm txias tuag hlau

Cov hlau pwm ua haujlwm txias feem ntau yog siv rau kev stamping, blanking, forming, bending, txias extrusion, txias drawing, hmoov metallurgy pwm, thiab lwm yam. Nws xav tau qhov nyuaj siab, tiv taus kev hnav siab thiab txaus toughness. Feem ntau muab faib ua ob pawg: hom dav dav thiab hom tshwj xeeb. Piv txwv li, cov hlau pwm ua haujlwm txias dav dav hauv Tebchaws Meskas feem ntau muaj plaub qib hlau: 01, A2, D2, thiab D3. Kev sib piv ntawm cov qib hlau ntawm cov hlau pwm ua haujlwm txias dav dav hauv ntau lub tebchaws tau qhia hauv Rooj 4. Raws li tus qauv JIS Nyiv, cov hom hlau pwm ua haujlwm txias tseem ceeb uas tuaj yeem siv tau yog SK series, suav nrog SK series carbon tool steel, 8 SKD series alloy tool steels, thiab 9 SKHMO series high-speed steels, rau tag nrho 24 qib hlau. Tuam Tshoj tus qauv GB/T1299-2000 alloy tool steel suav nrog tag nrho 11 hom hlau, tsim cov koob tiav. Nrog rau kev hloov pauv hauv cov txheej txheem ua, cov ntaub ntawv ua tiav thiab kev thov rau pwm, cov koob pib thawj tsis tuaj yeem ua tau raws li qhov xav tau. Cov chaw tsim khoom siv hlau Nyiv Pooj thiab cov chaw tsim khoom siv cuab yeej thiab hlau tuag loj hauv Tebchaws Europe tau tsim cov hlau tuag ua haujlwm txias tshwj xeeb, thiab maj mam tsim cov koob hlau tuag ua haujlwm txias, kev txhim kho cov hlau tuag ua haujlwm txias no kuj yog kev coj ua ntawm cov hlau tuag ua haujlwm txias.

Cov hlau tsis tshua muaj zog cua txias ua haujlwm tuag hlau

Nrog rau kev txhim kho cov thev naus laus zis kho cua sov, tshwj xeeb tshaj yog kev siv tshuab nqus tsev quenching hauv kev lag luam pwm, txhawm rau txo qhov deformation quenching, qee cov hlau tsis tshua muaj cua-quenched micro-deformation tau tsim hauv tsev thiab txawv teb chaws. Hom hlau no xav tau kev kho kom zoo thiab kev kho cua sov. Nws muaj qhov deformation me me, lub zog zoo thiab toughness, thiab muaj qee qhov kev tiv thaiv hnav. Txawm hais tias tus qauv siab-alloy txias ua haujlwm hlau tuag (xws li D2, A2) muaj qhov hardenability zoo, nws muaj cov ntsiab lus siab alloy thiab kim. Yog li ntawd, qee cov hlau tsis tshua muaj micro-deformation tau tsim hauv tsev thiab txawv teb chaws. Hom hlau no feem ntau muaj cov ntsiab lus alloy Cr thiab Mn alloy ntsiab lus los txhim kho hardenability. Tag nrho cov ntsiab lus ntawm cov ntsiab lus alloy feem ntau yog <5%. Nws yog qhov tsim nyog rau kev tsim cov khoom precision nrog cov khoom me me. Cov pwm nyuaj. Cov qib hlau sawv cev suav nrog A6 los ntawm Tebchaws Meskas, ACD37 los ntawm Hitachi Metals, G04 los ntawm Daido Special Steel, AKS3 los ntawm Aichi Steel, thiab lwm yam. Cov hlau GD Suav teb, tom qab quenching ntawm 900 ° C thiab tempering ntawm 200 ° C, tuaj yeem khaws cia qee qhov austenite thiab muaj lub zog zoo, toughness thiab dimensional stability. Nws tuaj yeem siv los ua cov pwm stamping txias uas yooj yim chipping thiab tawg. Lub neej ua haujlwm siab.

Cov hlau pwm uas raug hluav taws kub hnyiab

Yuav kom luv lub voj voog tsim pwm, ua kom yooj yim rau cov txheej txheem kho cua sov, txuag hluav taws xob thiab txo cov nqi tsim pwm. Nyiv Pooj tau tsim qee cov hlau tuag txias tshwj xeeb rau cov kev xav tau hluav taws kub. Cov feem ntau suav nrog Aichi Steel's SX105V (7CrSiMnMoV), SX4 (Cr8), Hitachi Metal's HMD5, HMD1, Datong Special Steel Company's G05 steel, thiab lwm yam. Tuam Tshoj tau tsim 7Cr7SiMnMoV. Hom hlau no tuaj yeem siv los ua kom sov cov hniav lossis lwm qhov ntawm pwm siv rab phom oxyacetylene lossis lwm yam cua sov tom qab pwm ua tiav thiab tom qab ntawd cua txias thiab quenched. Feem ntau, nws tuaj yeem siv ncaj qha tom qab quenching. Vim nws cov txheej txheem yooj yim, nws tau siv dav hauv Nyiv Pooj. Hom hlau sawv cev ntawm hom hlau no yog 7CrSiMnMoV, uas muaj kev tawv zoo. Thaum φ80mm hlau yog roj quenched, qhov nyuaj ntawm qhov deb ntawm 30mm ntawm qhov chaw tuaj yeem ncav cuag 60HRC. Qhov sib txawv ntawm qhov nyuaj ntawm lub hauv paus thiab qhov chaw yog 3HRC. Thaum nplaim taws quenching, Tom qab preheating ntawm 180 ~ 200 ° C thiab cua sov rau 900-1000 ° C rau quenching nrog rab phom tsuag, qhov nyuaj tuaj yeem ncav cuag ntau dua 60HRC thiab ib txheej tawv tshaj 1.5 hli tuaj yeem tau txais.

Muaj zog toughness, siab hnav tsis kam ua haujlwm txias tuag hlau

Yuav kom txhim kho qhov tawv ntawm cov hlau ua haujlwm txias thiab txo qhov hnav tsis kam ntawm cov hlau, qee lub tuam txhab tsim cov hlau pwm txawv teb chaws loj tau tsim cov hlau ua haujlwm txias uas muaj ob qho tib si siab tawv thiab hnav tsis kam. Hom hlau no feem ntau muaj li 1% carbon thiab 8% Cr. Nrog rau kev ntxiv ntawm Mo, V, Si thiab lwm yam khoom sib xyaw, nws cov carbides zoo, faib sib npaug, thiab nws qhov tawv yog siab dua li ntawm Cr12 hom hlau, thaum nws qhov hnav tsis kam zoo ib yam. . Lawv qhov tawv, lub zog flexural, lub zog qaug zog thiab qhov tawg toughness siab, thiab lawv qhov kev tiv thaiv kev kub ntxhov kuj siab dua li Crl2 hom hlau pwm. Lawv tsim nyog rau kev xuas nrig ntaus ceev ceev thiab ntau qhov chaw xuas nrig ntaus. Cov hom hlau sawv cev ntawm hom hlau no yog Nyiv DC53 nrog cov ntsiab lus V qis thiab CRU-WEAR nrog cov ntsiab lus V siab. DC53 raug quenched ntawm 1020-1040 ° C thiab qhov tawv tuaj yeem ncav cuag 62-63HRC tom qab cua txias. Nws tuaj yeem ua kom sov ntawm qhov kub qis (180 ~ 200 ℃) thiab kub siab tempering (500 ~ 550 ℃), nws qhov tawv tuaj yeem siab dua D2 1 zaug, thiab nws qhov kev ua haujlwm qaug zog yog 20% ​​siab dua D2; tom qab CRU-WEAR forging thiab dov, nws yog annealed thiab austenitized ntawm 850-870 ℃. Tsawg dua 30 ℃ / teev, txias rau 650 ℃ thiab tso tawm, qhov nyuaj tuaj yeem ncav cuag 225-255HB, qhov kub quenching tuaj yeem xaiv tau hauv qhov ntau ntawm 1020 ~ 1120 ℃, qhov nyuaj tuaj yeem ncav cuag 63HRC, tempered ntawm 480 ~ 570 ℃ raws li cov xwm txheej siv, nrog qhov pom tseeb theem nrab Cov nyhuv tawv, hnav tsis kam thiab tawv zoo dua D2.

Cov hlau puag (Cov hlau ceev ceev)

Cov hlau ceev ceev tau siv dav hauv txawv teb chaws los tsim cov pwm ua haujlwm txias uas ua haujlwm tau zoo, siv tau ntev vim nws tiv taus kev hnav zoo heev thiab tawv liab, xws li Nyiv tus qauv dav dav hlau ceev ceev SKH51 (W6Mo5Cr4V2). Yuav kom hloov kho tau raws li qhov xav tau ntawm cov pwm, qhov tawv feem ntau txhim kho los ntawm kev txo qhov kub quenching, quenching hardness lossis txo cov pa roj carbon hauv cov hlau ceev ceev. Cov hlau matrix yog tsim los ntawm cov hlau ceev ceev, thiab nws cov tshuaj lom neeg sib npaug rau cov khoom sib xyaw matrix ntawm cov hlau ceev ceev tom qab quenching. Yog li ntawd, tus lej ntawm cov carbides seem tom qab quenching yog me me thiab faib sib npaug, uas ua rau qhov tawv ntawm cov hlau zoo dua piv rau cov hlau ceev ceev. Tebchaws Meskas thiab Nyiv tau kawm txog cov hlau hauv paus nrog qib VascoMA, VascoMatrix1 thiab MOD2 thaum ntxov xyoo 1970. Tsis ntev los no, DRM1, DRM2, DRM3, thiab lwm yam tau tsim. Feem ntau siv rau cov pwm ua haujlwm txias uas xav tau qhov tawv siab dua thiab zoo dua tiv thaiv kev kub ntxhov. Tuam Tshoj kuj tau tsim qee cov hlau tseem ceeb, xws li 65Nb (65Cr4W3Mo2VNb), 65W8Cr4VTi, 65Cr5Mo3W2VSiTi thiab lwm yam hlau. Hom hlau no muaj lub zog zoo thiab tawv thiab siv dav hauv kev rho tawm txias, phaj tuab txias xuas nrig ntaus, log dov xov, pwm luam ntawv, pwm txias taub hau, thiab lwm yam, thiab tuaj yeem siv ua pwm rho tawm sov.

Hmoov hlau metallurgy pwm hlau

LEDB-hom high-alloy txias ua haujlwm tuag hlau tsim los ntawm cov txheej txheem ib txwm muaj, tshwj xeeb tshaj yog cov khoom siv loj, muaj cov carbides eutectic loj thiab kev faib tawm tsis sib xws, uas ua rau txo qis qhov tawv, grindability thiab isotropy ntawm cov hlau. Nyob rau hauv xyoo tas los no, cov tuam txhab hlau tshwj xeeb txawv teb chaws uas tsim cov cuab yeej thiab tuag hlau tau tsom mus rau kev tsim cov hmoov metallurgy high-speed hlau thiab high-alloy tuag hlau, uas tau ua rau muaj kev txhim kho sai ntawm hom hlau no. Siv cov txheej txheem hmoov metallurgy, cov hmoov hlau atomized txias sai thiab cov carbides tsim yog zoo thiab sib xws, uas ua rau txhim kho qhov tawv, grindability thiab isotropy ntawm cov khoom pwm. Vim yog cov txheej txheem tsim khoom tshwj xeeb no, cov carbides yog zoo thiab sib xws, thiab kev ua haujlwm machining thiab kev sib tsoo tau zoo dua, tso cai rau cov pa roj carbon thiab vanadium ntau dua ntxiv rau cov hlau, yog li tsim cov hlau tshiab. Piv txwv li, Nyiv Pooj Datong's DEX series (DEX40, DEX60, DEX80, thiab lwm yam), Hitachi Metal's HAP series, Fujikoshi's FAX series, UDDEHOLM's VANADIS series, Fabkis Erasteel's ASP series, thiab Asmeskas CRUCIBLE lub tuam txhab hmoov metallurgy cuab yeej thiab tuag hlau tab tom txhim kho sai. Tsim ib series ntawm hmoov metallurgy hlau xws li CPMlV, CPM3V, CPMlOV, CPM15V, thiab lwm yam, lawv qhov kev tiv thaiv hnav thiab toughness tau zoo dua piv rau cov cuab yeej thiab tuag hlau tsim los ntawm cov txheej txheem ib txwm muaj.