1. Pib
Cov pwm yog cov cuab yeej tseem ceeb rau txhuas profile extrusion. Thaum lub sij hawm cov txheej txheem extrusion, pwm xav tau kom muaj qhov kub, siab, thiab kev sib txhuam siab siab. Thaum siv sijhawm ntev, nws yuav ua rau pwm hnav, yas deformation, thiab kev puas tsuaj thiab qaug zog. Thaum muaj mob hnyav, nws yuav ua rau pwm pwm.
2. Ua tsis tiav cov ntaub ntawv thiab ua rau pwm
2.1 Kev Hnav Ua Haujlwm
Hnav yog daim ntawv tseem ceeb uas ua rau tsis ua tiav ntawm extrusion tuag, uas yuav ua rau qhov loj ntawm txhuas profiles kom tawm ntawm kev txiav txim thiab qhov zoo rau poob qis. Thaum lub sij hawm extrusion, txhuas profiles ntsib qhib ib feem ntawm cov pwm kab noj kab noj hniav los ntawm cov khoom siv kub siab thiab siab siab yam tsis muaj kev ua. Ib sab ncaj qha tiv tauj nrog lub dav hlau ntawm caliper sawb, thiab lwm sab swb, uas ua rau kev sib txhuam sab, uas ua rau kev sib txhuam sab nrauv, uas ua rau kev sib txhuam sab, ua rau muaj kev sib txhuam loj. Qhov saum npoo ntawm kab noj hniav thiab saum npoo ntawm lub caliper txoj siv yog raug hnav thiab ua tiav. Nyob rau tib lub sijhawm, thaum lub sijhawm kev sib txhuam ntawm cov pwm, ib co billet hlau tau ua rau cov tshuaj ua haujlwm ntawm cov pwm hloov thiab tsis tuaj yeem siv, thiab tseem raug hnav ua haujlwm tsis ua haujlwm, uas yog qhia nyob rau hauv daim ntawv ntawm passive ntawm kev txiav ntug, cov npoo sib npaug, dav hlau tog, sab hauv, tev, thiab lwm yam.
Cov kev hnav tshwj xeeb ntawm kev coj tuag yog cuam tshuam nrog ntau yam xws li cov tshuaj lom neeg ntawm cov khoom tuag thiab cov khoom siv cov khoom siv ntawm cov tuag thiab billet, thiab lub siab, kub, thiab nrawm thaum lub sij hawm extusion. Kev hnav ntawm Aluminium Extrusion Pwm yog tsuas yog thermal hnav, thermal hnav yog tshwm sim los ntawm kev sib txhuam, cov pwm loj sib luag thiab cov pwm ntawm cov pwm sib cuam tshuam. Tom qab saum npoo ntawm cov pwm kab noj hniav yog softened ntawm qhov siab kub, nws cov coj tsis kam yog txo qis heev. Nyob rau hauv cov txheej txheem ntawm kev hnav thermal, ntsuas kub yog qhov tseem ceeb cuam tshuam rau cua sov hnav. Qhov siab dua qhov ntsuas kub, qhov ntau loj dua lub thermal hnav.
2.2 Yas deformation
Cov yas yas deformation ntawm txhuas profile extrusion tuag yog qhov yielding txheej txheem ntawm cov khoom tuag hlau.
Txij li thaum Extrusion tuag yog nyob rau hauv lub xeev ntawm kev kub siab, thiab siab txhuam nrog lub extruded hlau ntev thaum nws ua haujlwm, qhov tseeb kub ntawm kev ua si.
Nyob rau hauv cov kev ntsuas siab heev, muaj ntau ntau ntawm cov yas deformation yuav tshwm sim, ua haujlwm rau kev ua haujlwm lossis tsim cov ellipse, thiab cov duab ntawm cov khoom tsim tawm yuav hloov. Txawm hais tias pwm tsis muab cov kab nrib pleb, nws yuav swb vim hais tias qhov tseeb qhov tseeb ntawm cov profile txhuas tsis tuaj yeem lav.
Tsis tas li ntawd, lub npoo ntawm extrusion tuag yog raug qhov sib txawv ntawm cov cua sov thiab cua txias, uas tsim kev hloov pauv cua sov thiab zaws ntawm cov nplaim dej. Nyob rau tib lub sijhawm, lub microstructure kuj undergoes hloov pauv mus rau qib sib txawv. Nyob rau hauv cov nyhuv sib xyaw ua ke, pwm hnav thiab nto deformation yuav tshwm sim.
2.3 Kev ua kom qaug zog
Thermal rog kev puas tsuaj kuj yog ib qho ntawm cov hom ntawv tsis ua haujlwm. Thaum lub rhuab txhuas pas los rau hauv kev sib cuag nrog rau saum npoo ntawm extrusion nrawm dua li qhov kub, thiab compressive ntxhov siab yog tsim nyob rau saum npoo vim nthuav dav.
Nyob rau tib lub sijhawm, cov txiaj ntsig lub zog ntawm cov pwm saum npoo av txo qis vim qhov nce hauv qhov kub. Thaum qhov nce siab tshaj tawm ntau dua li cov txiaj ntsig lub zog ntawm cov hlau nto ntawm qhov ntsuas kub sib txuas, yas plervion pluals tshwm rau saum npoo. Thaum cov profile tawm cov pwm, qhov chaw kub txo qis. Tab sis thaum qhov ntsuas kub hauv qhov profile yog tseem muaj kev siab, lub tensile lim yuav.
Ib yam li ntawd, thaum nce nyob rau hauv tensile ntxhov siab ntau dua li cov paib muaj zog ntawm qhov profile, yas tensile lim yuav tshwm sim. Thaum lub zos strain ntawm cov pwm ntau tshaj qhov txwv tsis pub tshaj plaws, qhov me nyuam ntxiv ntawm cov kab yas me me tuaj yeem tsim cov kab nrib pleb me.
Yog li ntawd, txhawm rau tiv thaiv lossis txo qis kev qaug zog ntawm cov pwm, cov ntaub ntawv tsim nyog yuav tsum tau xaiv thiab ua kom muaj kev kho cua sov tsim nyog. Nyob rau tib lub sijhawm, saib xyuas yuav tsum tau them los txhim kho kev siv cov pwm.
2.4 Pwm Breakage
Hauv kev tsim khoom tiag tiag, cov kab nrib pleb tau muab faib rau qee qhov ntawm cov pwm. Tom qab qee lub sijhawm pabcuam, cov kab nrib pleb me me yog tsim thiab maj nthuav dav hauv qhov tob. Tom qab cov kab nrib pleb nthuav mus rau qee qhov loj me, cov ris luv nqi ntawm lub peev xwm ntawm cov pwm yuav tsis muaj zog thiab ua kom tawg. Lossis microcacks tau tshwm sim thaum lub sijhawm kho cua sov qub thiab kev ua haujlwm ntawm cov pwm, ua rau nws yooj yim rau pwm kom nthuav dav thiab ua rau thaum siv thaum ntxov thaum siv.
Nyob rau hauv cov nqe lus ntawm kev tsim qauv, cov laj thawj tseem ceeb rau kev ua tsis tiav yog lub zog tsim yog lub zog tsim thiab xaiv Fillet Roterius thaum hloov tsheb. Hais txog kev tsim khoom, cov laj thawj tseem ceeb yog cov khoom siv ua ntej kev kuaj thiab ua kom puas thaum ua, nrog rau kev kho cua sov thiab kev kho kom zoo.
Thaum siv, Saib xyuas kom tswj tau pwm ntawm cov pwm ua ntej, kom muaj qhov kub thiab txias thiab siv cov tshuaj tiv thaiv ceev thiab kev tswj hwm hluav taws xob txaus.
3. Kev txhim kho ntawm lub neej pwm
Hauv kev tsim cov khoom siv txhuas, pwm cov nqi nyiaj txiag rau cov feem sib npaug ntawm cov nqi ntxiv rau cov nqi.
Qhov zoo ntawm cov pwm kuj cuam tshuam rau qhov zoo ntawm cov khoom. Txij li thaum cov haujlwm ua haujlwm ntawm extrusion pwm nyob rau hauv profile extrusion kev tsim khoom yog qhov tsim nyog tswj hwm cov qauv thiab cov khoom siv zaum kawg ntawm kev siv pwm thiab kev saib xyuas thiab txij nkawm.
Tshwj xeeb tshaj yog thaum lub zog tsim khoom, cov pwm yuav tsum muaj kev nkees, thermal hnav lub neej ntawm cov nqi tsim khoom ntawm cov pwm thiab txo cov nqi tsim khoom.
3.1 Xaiv cov ntaub ntawv pwm
Qhov txheej txheem Extrusion ntawm Aluminium Profiles yog qhov siab-ntsuas cov txheej txheem, thiab aluminium extusion kev tuag yog raug rau kev siv hnyav hnyav.
Extrusion tuag yog raug rau kev kub siab, thiab lub chaw kub hauv zos tuaj yeem ncav cuag 600 degrees Celsius. Qhov saum npoo ntawm extrusion tuag yog rov ua kom sov thiab txias, ua rau thermal nkees.
Thaum cov pwm tshem tawm cov roj txhuas, cov pwm yuav tsum tiv thaiv kom siab compression, khoov thiab shear kev nyuaj siab, uas yuav ua rau muaj kev phom sij.
Ua raws li cov haujlwm ua haujlwm ntawm extrusion tuag, cov khoom uas xav tau ntawm cov khoom tuaj yeem txiav txim siab.
Ua ntej tshaj plaws, cov khoom yuav tsum muaj cov txheej txheem zoo. Cov khoom siv yuav tsum tau yooj yim rau smelt, forge, txheej txheem thiab kho cua sov. Ib qho ntxiv, cov ntaub ntawv yuav tsum muaj lub zog siab thiab siab tawv. Extrusion thiab ua haujlwm feem ntau ua haujlwm raws li qhov kub thiab kub siab. Thaum extruding aluminium alloys, lub zog tensile ntawm cov khoom tuag nyob rau ntawm chav tsev kub yuav tsum muaj ntau dua 1500MPA.
Nws yuav tsum muaj qhov kub tiv thaiv, uas yog, muaj peev xwm tawm tsam cov neeg kho tshuab thauj ntawm qhov kub siab thaum lub sijhawm extrusatatures. Nws yuav tsum muaj kev cuam tshuam ntau nyuaj thiab pob txha lov taw kev ntawm qhov kub thiab txias thiab kub, los tiv thaiv cov pwm los ntawm kev ntxhov siab hauv kev ntxhov siab lossis cuam tshuam loads.
Nws yuav tsum muaj cov kev coj ua tau zoo, uas yog, lub peev xwm muaj lub peev xwm los tawm tsam kev hnav kub ntev, nws muaj peev xwm tiv thaiv hlau adhesion thiab hnav.
Hardenility zoo yog qhov yuav tsum tau ua kom ntseeg tau siab thiab cov neeg siv hluav taws xob siab nyob thoob plaws tag nrho cov cross ntu ntawm lub cuab tam.
Siab thermal conductivity yuav tsum tau sai sai dispipate tshav kub los ntawm kev ua haujlwm me me ntawm cov tshuab muaj zog ntawm extruded workpiece thiab pwm nws tus kheej.
Nws yuav tsum muaj zog tiv taus ntau dua kev ntxhov siab, uas yog, nws yuav tsum muaj siab kawg dag zog los tiv thaiv kev ua kom muaj kev puas tsuaj ntxov. Nws kuj yuav tsum muaj qee yam corrosion tsis kam thiab zoo nitridability cov yam ntxwv.
3.2 Tsim Tsim Nyog Cov Pwm
Tsim Nyog tsim ntawm cov pwm yog qhov tseem ceeb ntawm kev ncua nws lub neej kev pabcuam. Ib qho qauv tsim kom haum pwm yuav tsum ua kom muaj kev cuam tshuam kev sib tsoo thiab kev ntxhov siab concentration nyob rau hauv ib txwm siv kev siv. Yog li ntawd, thaum tsim cov pwm, sim ua kom muaj kev ntxhov siab rau txhua ntu, thiab xyuam xim kom tsis txhob muaj qhov txawv, thiab lwm yam, kom tsis txhob muaj kev ntxhov siab ntau dhau. Tom qab ntawd, ua kom muaj kev kho kom sov li cas, tawg thiab nkag mus maj nrawm thaum siv tau yooj yim rau kev sib pauv ntawm cov pwm.
3. Txhim kho qhov zoo ntawm kev kho cua sov thiab cov kev kho kom sov
Qhov kev pabcuam lub neej ntawm extrusion tuag loj yog nyob ntawm qhov zoo ntawm kev kho cua sov. Yog li, kev kho cua sov kev kho cua sov thiab kho kom sov thiab muaj zog ntxiv los txhim kho lub neej pabcuam ntawm cov pwm.
Nyob rau tib lub sijhawm, kev kho cua sov thiab kev kho mob saum npoo ntxiv dag zog kom tiv thaiv kev kho cov cua sov. Kho cov txheej txheem kev txwv thiab cov txheej txheem tempering thiab ua kom muaj zog thiab kev kawm kom sov thiab kev kho kom sov thiab muaj zog ntxiv dag zog Kev kho mob, yog pab kom txhim kho lub neej pabcuam ntawm cov pwm.
3.4 Txhim kho qhov zoo ntawm pwm raug
Thaum kev ua cov pwm, cov txheej txheem sib xws suav nrog kev ua haujlwm siv tshuab, thiab kev siv cov tshuab hluav taws xob yog qhov tseem ceeb thiab cov txheej txheem tseem ceeb hauv cov txheej txheem pwm. Nws tsis yog hloov pauv cov tsos ntawm cov pwm, tab sis kuj cuam tshuam ncaj qha cuam tshuam qhov zoo ntawm qhov profile thiab kev pabcuam lub neej ntawm cov pwm.
Hlau Tej ntawm cov tuag qhov yog cov txheej txheem siv dav dav hauv kev ua pwm. Nws txhim kho kev ua tau zoo thiab ua qhov raug, tab sis nws tseem coj qee yam teeb meem tshwj xeeb. Piv txwv li, yog tias lub pwm ua los ntawm kev txiav xaim xaim yog siv ncaj qha yam tsis muaj kev tsim khoom uas tsis yooj yim tshwm sim, uas yuav txo cov kev pabcuam lub neej ntawm cov pwm. Yog li ntawd, txaus siab rau txaus ntawm cov pwm tom qab kev txiav xaim tuaj yeem txhim kho lub xeev kev ntxhov siab ntau, txo qis kev pab cuam ntawm pwm.
Kev ntxhov siab ntxhov siab yog qhov tseem ceeb ua rau pwm tawg. Hauv kev ua kom pom raws qhov kev tso cai rau los ntawm kev kos duab tsim, cov cheeb ntawm cov xaim xaim xaim hlau, zoo dua. Qhov no tsis yog tsuas pab txhim kho kev txuag, tab sis kuj txhim kho kev faib cov kev ntxhov siab los tiv thaiv qhov tshwm sim ntawm kev ntxhov siab.
Siv hluav taws xob tshem tawm Machining yog ib hom hluav taws xob machining ua los ntawm cov khoom siv vaporization, yaj thiab tshuab ua kua evaporation tsim thaum tso tawm. The problem is that due to the heat of heating and cooling acting on the machining fluid and the electrochemical action of the machining fluid, a modified layer is formed in the machining part to produce strain and stress. Xws li cov roj, cov pa roj atoms decomposposed vim tias cov kev sib txuas ntawm cov roj diffuse thiab carburize mus rau lub workpiece. Thaum lub thermal kev ntxhov siab nce, cov txheej txheem detmerated dhau los ua brittle thiab nyuaj thiab muaj zog rau cov kab nrib pleb. Nyob rau tib lub sijhawm, seem kev ntxhov siab yog tsim thiab txuas rau qhov chaw ua haujlwm. Qhov no yuav ua rau txo qis zog zog, nrawm nrawm, ntxhov siab corrosion thiab lwm yam tshwm sim. Yog li ntawd, thaum lub sijhawm ua kev ua tiav, peb yuav tsum sim kom tsis txhob muaj cov teeb meem saum toj no thiab txhim kho kev ua haujlwm zoo.
3.5 txhim kho kev ua haujlwm thiab cov txheej txheem kev ua kom huv
Cov haujlwm ua haujlwm ntawm extrusion tuag yog tsis zoo heev, thiab ib puag ncig ua haujlwm kuj tsis zoo heev. Yog li ntawd, txhim kho cov txheej txheem extrusion cov txheej txheem thiab cov txheej txheem ua haujlwm, thiab txhim kho kev ua haujlwm thiab kev ua haujlwm tau txais txiaj ntsig los txhim kho lub neej tuag. Yog li ntawd, ua ntej extrusion, nws yog ib qho tsim nyog los ua tib zoo ua kom cov txheej txheem extrusion (xws li cov khoom siv kub zoo tshaj plaws (ceev, extrusion siab, thiab lwm yam) thiab txhim kho lub Ua haujlwm ib puag ncig lub sijhawm extrusion (xws li dej txias lossis nitrogen txias, txaus lub nra, xws li txo qis extrusion siab, Txo qhov ua kom sov sov thiab hloov load, thiab lwm yam), tsim thiab txhim kho cov txheej txheem kev ua haujlwm thiab cov txheej txheem kev nyab xeeb.
4 TAWG
Nrog rau kev txhim kho cov qauv kev lag luam txhuas, nyob rau xyoo tsis ntev los no txhua tus neeg nrhiav cov qauv kev txhim kho zoo, txuag nqi, thiab cov txiaj ntsig zoo thiab nce nqi. Extrusion tuag yog undoubtedly ib qho tseem ceeb tswj node rau kev tsim cov khoom siv txhuas.
Muaj ntau yam cuam tshuam rau lub neej ntawm Aluminium Extrusion tuag. Ntxiv nrog rau sab hauv yam xws li cov txheej txheem tsim thiab lub zog ntawm kev tuag thiab kev kho cua sov thiab kev kho cua sov, kev kho tuag, kev kho kom tuag, extrusion Cov khoom lag luam khoom thiab cov qauv, cov lus qhia tshwj xeeb thiab kev tswj kev tshawb fawb txog kev tuag.
Nyob rau tib lub sijhawm, cov txiaj ntsig kev cuam tshuam tsis yog ib qho, tab sis ib qho teeb meem ntau lub neej, txhawm rau txhim kho cov txheej txheem, yuav tsum tau ua kom zoo rau tus qauv tsim, Pwm ua, siv txij nkawm thiab lwm yam kev tswj hwm tau zoo, thiab tom qab ntawd txhim kho cov nqi zog, txo cov nqi tsim khoom, txhim kho ntau dua.
Edited los ntawm May Jiang los ntawm Mat Aluminium
Lub Sijhawm Post: Lub Yim Hli 14-2024
