Daim ntawv no qhia cov txheej txheem tshuaj tsuag cov tshuaj tsuag ntawm cov iav lub raj mis tuaj yeem pwm ntawm peb yam
Thawj qhov: cov tshuaj tsuag vuam ntawm lub raj mis thiab tuaj yeem pwm iav, suav nrog kev siv tshuaj txau wrding, etc.
Cov txheej txheem ntawm pwm txau vuam vuam - tau tsis ntev los no ua kom muaj kev sib tw tshiab, nrog "micro ntshav txau vuam vuam".
Micro Ntshav Txau tuaj yeem pab cov neeg ua haujlwm tuaj yeem pab cov tuam txhab ua lag luam thiab cov khoom siv sijhawm ntev, thiab cov khoom siv tau ua haujlwm ntev dua. Tsuas yog hloov cov tshuaj tsuag vuam Tawb lub taub hau tuaj yeem ua kom tau raws li cov tshuaj tsuag dej yuav tsum muaj cov haujlwm sib txawv.
2.1 Dab tsi yog cov ntsiab lus tshwj xeeb ntawm "Nickel-based alloy ham fwj"
Nws yog kev tsis to taub txog "Npib Nickel" ua cov khoom siv cladding, qhov tseeb, chromium (b), boron (b) thiab silicon (si). Cov alloy no yog tus cwj pwm los ntawm nws qhov qis qis qhov taw tes, xws li 1,020 ° C txog 1,050 ° C.
Lub ntsiab tseem ceeb uas ua rau cov hmoov uas muaj feem ntau ntawm cov pa uas muaj npib uas muaj menyuam yaus, boron Cov. Tsis tas li, cov neeg npib Nickel-based alloys tau yooj yim tso los ntawm oxy-roj roj vuam (OFW) los ntawm lawv cov qib qis vim lawv txoj kev tswj hwm, thiab yooj yim ntawm kev tswj hwm ntawm Weld puddle.
Oxygen Roj Roj Vuam (OFW) muaj ob theem sib txawv: thawj theem, hu ua cov hmoov tso tawm, nyob rau hauv vuam hmoov melts thiab adheres rau cov workpiece nto; Melted rau kev sib dhos thiab txo porosity.
Qhov tseeb yuav tsum tau coj mus ua kev zam lub luag haujlwm ntawm lub hauv paus thiab Nickel Allot ntawm 1,350 txog 1,400 ° C lossis melting Taw tes ntawm 1,370 txog 1,500 ° C ntawm C40 cov hlau carbon (Uni 7845-78). Nws yog qhov sib txawv ntawm melting point uas ua kom ntseeg tau tias lub npib tsib, cov chromium, boron, thiab silicon alloys yuav tsis ua rau kev zam ntawm lub hauv paus hlau thaum lawv nyob ntawm qhov kub ntawm kev thim rov qab.
Txawm li cas los xij, Nickel Alloy Deposition tseem tuaj yeem ua tiav los ntawm kev tso nyiaj hlau nruj: qhov no yuav tsum muaj kev pab hloov ntshav arc vuam (PTA).
2.2 npib npib alloy foot siv rau cladding Punch / Core hauv lub raj mis iav kev lag luam
Rau cov laj thawj no, cov iav kev lag luam ib txwm xaiv cov npib tsib xee-alloys rau cov txheej txheej tawv ntawm punch chaw. Kev Tso Tawm ntawm Nickel-Raws li cov alloys tuaj yeem ua tiav los ntawm oxy-roj roj vuam sib tsoo (hvof) Cov. Ib zaug ntxiv, qhov sib txawv hauv kev sib txawv ntawm lub hauv paus thiab Nickel alloy yog qhov tseem ceeb tshaj plaws ua ntej, txwv tsis pub cladding yuav tsis tau.
Nickel, cov chromium, boron, silicon alloys tuaj yeem siv cov roj av hloov roj (PTAW)
Lub harmness ntawm cov nickel-based alloys sib txawv raws li cov cai ntawm txoj haujlwm, tab sis feem ntau yog nruab nrab ntawm 30 hrc thiab 60 teev.
2.3 Hauv qhov kev kub siab ib puag ncig, lub siab ntawm cov nickel-raws li cov alloys yog tus loj
Lub hardness hais los saum toj no hais txog lub hardness nyob rau hauv chav tsev kub. Txawm li cas los xij, nyob rau hauv qhov kub kub ua hauj lwm ib puag ncig, lub hardness ntawm nickel-based alloys txo.
Raws li qhia saum toj no, txawm hais tias lub haloalt alloys yog qis dua li ntawm kev cobalt-based alloys muaj ntau dua li ntawm cov nickel-based alloys ntawm kev kub siab (xws li siv cov kev ua haujlwm ntawm lub cev (xws li cov kev ua haujlwm pwm kub).
Daim duab qhia hauv qab no qhia txog kev hloov pauv ntawm hardness ntawm cov hmoov sib txawv sib zog nrog cov hmoov muaj hmoov:
2.4 Lub ntsiab lus tshwj xeeb ntawm "cobalt-based alloy ham ham hmoov"?
Xav txog cobalt ua cov khoom siv cladding, nws yog tiag tiag ib qho alloy muaj cai ntawm cobalt (C), chromium (cr), thiab molybdenum (mo). Feem ntau hu ua "stellite" ham fwj, cobalt-based alloys muaj carbides thiab bortides ua rau lawv tus kheej hardness. Qee cov cobalt-based alloys muaj 2.5% carbon. Lub ntsiab tseem ceeb ntawm kev cobalt-raws li cov alloys yog lawv lub hardness super txawm nyob ntawm qhov kub siab.
2.5 ntsib teeb meem thaum lub sijhawm tso nyiaj ntawm kev cobalt-based alloys ntawm punch / core nto:
Qhov teeb meem tseem ceeb nrog kev tso nyiaj ntawm kev cobalt-based alloys muaj feem cuam tshuam nrog lawv lub siab melting point. Qhov tseeb, lub ntsiab lus melting ntawm kev cobalt-beding alloys yog 1,375 ~ 1,400 ° C, uas yog yuav luag lub zog melting ntawm cov hlau thiab nrum hlau. Hypothetically, yog tias peb yuav tsum siv cov roj oxy-roj roj (ntawm cov nplaim hluav taws xob (ntawm cov nplaim taws (HVOF)
Tsuas yog xaiv tau tsuas yog rau kev ua kom muaj kev tso nyiaj ntawm cov hmoov nplej ntawm cov punch / core yog: hloov pauv ntshav arc (PTA).
2.6 txog cua txias
Raws li tau piav qhia saum toj no, kev siv cov pa roj roj peluam (ntawm cov txheej txheem hvof) thiab cov txheej txheem Hypof) Nyob rau hauv tom ntej kev hloov kho theem ntxiv, tus weld weld hlaws yog compacted thiab cov pores tau sau.
Nws tuaj yeem pom tau tias kev sib txuas ntawm cov hlau nto thiab cladding nto yog zoo meej thiab tsis muaj kev cuam tshuam. Cov punches hauv qhov kev xeem tau nyob rau tib kab (lub raj mis) ntau lawm siv cov roj oxy-roj (omof) , Lub Plasma Hloov Arc (PTA) xuas nrig ntaus kev ua haujlwm kub yog 100 ° C qis dua.
2.7 Hais Txog Machining
Machining yog ib qho txheej txheem tseem ceeb hauv punch / core ntau lawm. Raws li tau hais los saum toj no, nws yog qhov tsis zoo rau kev tso nyiaj ham hmoov (ntawm punches / cores) nrog txo qis hardness ntawm qhov kub. Ib qho ntawm cov laj thawj yog hais txog machining; Machining ntawm 60HRC hardness Alloy Solder Hmoov yog heev rau cov neeg siv khoom tsawg dua thaum teeb tsa cov cuab yeej nrawm, pub ceev, tob, ...). Siv cov tshuaj tsuag tib yam vuam ntawm 45HRC alloy hmoov yog yooj yim dua; Cov cuab yeej tig rov los kuj tseem tuaj yeem tsim cov khoom siab dua, thiab lub tshuab nws tus kheej yuav tau yooj yim dua.
2.8 txog qhov hnyav ntawm cov khoom tso dag hmoov hmoov
Cov txheej txheem ntawm oxy-roj roj vuam (ntawmW) Yog hais tias lub tshuab tawg spruam kev siv welding yeej yuav tsum tau 30 grams fam hmoov, qhov no txhais tau tias lub vuam rab phom yuav tsum tshuaj tsuag 100 grams hams hmoov.
Los ntawm qhov deb, cov hmoov tsis them tus nqi ntawm Plasma hloov arc (PTA) thev naus laus zis yog li 3% mus rau 5%. Rau tib lub tshuab sib tsoo tsuas yog siv rab phom tsuas yog xav tau tshuaj tsuag 32 grams ntawm hams hmoov.
2.9 Hais Txog Sij Hawm Tso Tawm
Oxy-roj roj vuam (ntawm iW Piv txwv li, kev tso nyiaj tau thiab rov ua lub sijhawm ntawm tib lub tshuab uas tseem ceeb yog 5 feeb. Plasma pauv arc (PTA) thev naus laus zis kuj yuav tsum ua tiav cov tawv nqaij tawv ntawm qhov chaw ua haujlwm (Plasma hloov ARC).
Cov duab hauv qab no qhia cov txiaj ntsig ntawm kev sib piv ntawm ob txheej txheem thiab hloov ntshav arc vuam (PTA).
Kev sib piv ntawm punches rau npib tsib xee-raws li cladding thiab cobalt-raws cladding. Cov txiaj ntsig ntawm kev sim ua haujlwm ntawm tib txoj kab ntau lawm uas tau ua tiav 3 zaug ntev dua li ntawm cov menyuam yaus uas muaj hnub nyoog 3 zaug tsis pom muaj qhov "degradation" .Qhov no ".Thaum thiab cov lus teb hais txog kev sib tham nrog Mr. Claudio Corni, ib qho tshuaj tsuag Italian vuam kws tshaj lij, hais txog tag nrho cov tshuaj tsuag vuam ntawm cov kab noj hniav
Lo lus nug 1: Yuav ua li cas tuab yog lub vuam txheej endoretically xav tau rau kab noj hniav tag nrho cov tshuaj tua vuam? Niaj yim cov txheej txheej tuab cuam tshuam kev ua tau zoo?
Teb 1: Kuv xav tias qhov siab tshaj plaws ntawm lub vuam txheej yog 2 ~ 2.5mm, thiab cov oscillation amplitude tau teem rau 5 hli; Yog tias tus neeg siv khoom siv cov tuab tuab loj dua, qhov teeb meem ntawm "ncej puab pob qij txha" yuav ntsib.
Lo lus nug 2: Vim li cas ho tsis siv lub viav vias loj dua osc = 30mm hauv ntu ncaj (pom zoo kom teeb 5 hli)? Qhov no puas yuav ua tau ntau dua? Puas muaj ib qho tshwj xeeb tseem ceeb rau 5 hli viav vias?
Teb 2: Kuv pom zoo kom cov ntu ncaj tseem siv lub viav vias ntawm 5 hli los tswj qhov ntsuas kub kom haum rau cov pwm;
Yog tias lub viav vias 30 hli yog siv, cov tshuaj tsuag qeeb heev yuav tsum tau teeb tsa, qhov kev ua haujlwm ntawm lub hauv paus yuav siab dhau, thiab lub zog ntawm cov khoom siv ploj yog li 10 teev. Lwm qhov kev txiav txim siab tseem ceeb yog qhov muaj feem cuam tshuam rau kev ua haujlwm (vim qhov ntsuas kub), uas nce qhov ntxim nyiam ntawm kev tawg.
Nrog viav vias ntawm 5 hli dav, tus kab nrawm nrawm dua, cov khoom siv tshuab zoo tshaj plaws yog tsim, thiab poob tsuas yog 2 ~ 3 hrc.
Q3: Dab tsi yog cov kev yuav tsum muaj cov kev xav tau ntawm cov dej ham? Twg ham hmoov yog haum rau kab noj hniav tshuaj tsuag?
A3: Kuv pom zoo cov hmoov txheem ua qauv 30psp, yog tias tawg tshwm sim, siv 23PSP ntawm cam khwb cia hlau pwm (siv pp qauv ntawm tooj liab pwm).
Q4: Dab tsi yog vim li cas rau xaiv cov hlau cooling? Dab tsi yog qhov teeb meem nrog kev siv grey cam khwb cia hlau?
Teb 4: Hauv Tebchaws Europe, peb feem ntau siv nodular cam khwb cia hlau (ob lub npe yog tau muaj hlau), lub npe ua ke hlau), lub npe nrov cam khwb cia hlau), lub npe nrov cam khwb cia hlau), lub npe nrov cam khwb cia hlau) Tsis zoo li txheej phaj-tsim txho cam khwb cia hlau (qhov tseeb, nws tuaj yeem yog hu ua "Laminate cam khwb cia hlau"). Cov tshuaj sib txawv xws li sib txawv ntawm cov hlau loj ntawm cov hlau thiab Lameres nrum hlau: Cov kaub kaub tais diav ua kom tawg thiab yog li kis tau ib qho tseem ceeb heev tus yam ntxwv. Ntxiv mus, cov ntaub ntawv sib dhos ntawm graphite, muab cov nyiaj qub, nyob rau thaj chaw tsawg dua, ua rau kom muaj kev puas tsuaj tsawg dua. Sib txuas rov qab rau nws thawj kev lag luam siv xyoo 1948, pawg yas tau dhau los ua lwm txoj kev xaiv rau cov hlau (thiab lwm yam cam khwb cia), ua rau tus nqi pov tseg, kev ua tau zoo.
Qhov kev ua tau zoo ntawm cov hlau ductuab vim nws cov yam ntxwv, sib xyaw nrog cov yam ntxwv yooj yim thiab hloov tau yooj yim ntawm cov hlau cam khwb cia / qhov hnyav piv
lub tshuab zoo
Tus nqi qis
Chav tsev tus nqi muaj qhov tsis kam
Zoo heev ua ke ntawm Tensile thiab Elongation Khoom
Lo lus nug 5: Qhov twg yog qhov zoo dua rau kev ua siab ntev nrog lub hardness thiab tsis muaj zog?
A5: Tag nrho cov ntau yog 35 ~ 21 hrc, Kuv pom zoo kom siv 30 PSP yas psp solder hmoov kom tau txais tus nqi hardness ze rau 28 teev.
Hardness tsis ncaj qha rau pwm lub neej, qhov sib txawv tseem ceeb hauv kev pabcuam lub neej yog txoj kev ntawm pwm nto yog "npog" thiab cov khoom siv.
Kev tuav ntaub ntawv vuam, qhov tseeb (vuam cov khoom thiab cov hlau sib xyaw ua ke ntawm cov pta ntshav, thiab khawb ntau tshwm sim hauv cov txheej txheem ntau lawm.
Lo lus nug 6: Yuav ua li cas ua tag nrho cov tshuaj tsuag tag nrho vuam ntawm sab hauv lub cev? Yuav ua li cas los ntes thiab tswj tau qhov zoo ntawm txheej txheem sib zog ntawm cov txheej txheem?
Teb 6: Kuv pom zoo teeb cov hmoov tsis muaj hmoov ntawm PTA Welder, tsis muaj ntau tshaj 10 teev; Pib los ntawm lub xub pwg sab xis, khaws cov kev sib txuas ntawm 5 hli rau weld sib nraus caj dab.
Sau ntawv kawg:
Nyob rau hauv ib lub sijhawm ntawm kev hloov nrawm nrawm, science thiab thev naus laus zis tsav cov kev kawm ntawm cov lag luam thiab cov zej zog; Txau wrding ntawm tib workpiece tuaj yeem ua tiav los ntawm cov txheej txheem sib txawv. Rau cov pwm Hoobkas, ntxiv rau kev xav txog qhov yuav tsum tau ua ntawm nws cov neeg siv khoom, nws yuav tsum tau siv cov cuab yeej siv ntawm kev siv tom qab, thiab seb puas muaj Cov khoom siv tuaj yeem npog cov khoom siv dav dav. Micro Ntshav Txau Vuam Txau Welding tsis ntseeg tau muab kev xaiv zoo dua rau cov khoom lag luam pwm.
Lub Sijhawm Post: Jun-17-2022