Stretching tuag account rau ib tug loj feem ntau ntawm tag nrho cov stamping tuag kev lag luam. Peb cov khob khob, lub casing ntawm lub cev muaj zog, thiab yuav luag feem ntau ntawm cov khoom muaj ntau lossis tsawg dua cov khoom uas yuav tsum tau ncab. Rau stretching Tus tsim ntawm cov pwm tsis tau txhais hais tias nws yuav raug xam raws li cov pa algorithm. Muaj ntau cov txheej txheem tag nrho ntawm qhov sib txawv, tshwj xeeb tshaj yog kev ncab ntawm qee lub cev tsis hloov, uas yog txwv tsis pub.
Vim tias muaj ntau yam tseem ceeb los xav txog hauv kev tsim cov duab kos, xws li kos duab coefficient, txawm tias nws tau mus txog qhov txwv ntawm cov khoom siv, kev txiav txim siab ntawm lub caij nplooj ntoos hlav quab yuam, kev taw qhia ntawm stretching, txawm tias nws yog stretched upwards los yog downwards, feem ntau tsis tuaj yeem ua ib zaug molding yuav tsum tau ntau qhov kev sim ua kom tau raws li qhov xav tau, thiab qee zaum cov pwm yuav raug muab pov tseg. Yog li ntawd, accumulating kev nyob rau hauv kev xyaum yog ib tug zoo pab rau tus tsim ntawm daim duab tuag.
Tsis tas li ntawd, qhov loj ntawm cov khoom txiav kuj ua lub luag haujlwm uas tsis tuaj yeem tsis quav ntsej hauv kev sim ntau lawm ntawm tag nrho cov pwm. Yog li feem ntau ntawm lub sijhawm, thaum peb tsim qee qhov sib sib zog nqus qhov sib sib zog nqus, peb feem ntau khaws ib kauj ruam dawb paug hauv pwm tsim theem.
duab
1. Cov khoom siv stretch
Thaum cov neeg siv khoom xav tau rau cov khoom siv tsis nruj heev thiab rov ua pwm kev sim ua tsis tau raws li qhov yuav tsum tau ua, koj tuaj yeem sim lwm cov khoom siv nrog cov khoom tensile zoo dua. Cov khoom zoo yog ib nrab ntawm kev sib ntaus sib tua. Stretching yuav tsum tsis txhob ignored. Cold-dov nyias steel ntawv rau stretching mas muaj xws li No. 08Al, 08, 08F, 10, 15, thiab 20 steels. Ntawm lawv, No. 08 steels yog siv ntau tshaj plaws, uas tau muab faib ua boiling steels thiab tua steels. Boiling steels yog tus nqi qis thiab zoo hauv qhov chaw zoo, tab sis Kev sib cais yog qhov hnyav, thiab muaj kev nyiam ntawm "strain aging". Nws tsis haum rau cov khoom uas xav tau kev ua haujlwm siab stamping thiab cov kev xav tau nruj heev. Cov hlau tua tau zoo dua, nrog kev ua haujlwm tsis zoo tab sis tus nqi siab dua. Tus neeg sawv cev qib yog txhuas tua hlau 08Al. Cov hlau txawv teb chaws tau siv Japanese SPCC-SD sib sib zog nqus nqus hlau, thiab nws cov khoom tensile zoo dua 08Al.
2. Qhov kawg ntawm cov pwm
Thaum kos duab sib sib zog nqus ua tiav, ob sab ntawm qhov tuag thiab qhov khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob.
3. Kev txiav txim siab ntawm qhov loj me
Ntau wrinkles, tsawg tawg yog peb txoj cai. Qhov chaw tsim qauv ntawm qhov khoob yuav tsum yog. Txoj kab uas hla ntawm qhov khoob ntawm daim duab kos ib feem ntawm lub cev rotating nrog cov duab yooj yim yuav tsis thinned. Txawm hais tias lub thickness ntawm cov khoom hloov, nws yog ib qho tseem ceeb tib yam li thawj thickness. Kaw, nws tuaj yeem suav tau raws li lub hauv paus ntsiab lus hais tias thaj tsam ntawm qhov khoob yog sib npaug ntawm thaj tsam ntawm qhov ncab (yog tias muaj trimming, qhov nyiaj trimming yuav tsum tau ntxiv). Txawm li cas los xij, cov duab thiab cov txheej txheem ntawm qhov ncab yog feem ntau nyuaj, thiab qee zaum lawv yuav tsum tau thinned thiab ncab. Txawm hais tias muaj ntau yam 3D software uas tuaj yeem suav cov khoom nthuav dav, lawv qhov tseeb tsis tuaj yeem ua tau raws li qhov xav tau ntawm 100 feem pua.
Kev daws: qauv.
Ib yam khoom yuav tsum dhau los ntawm ntau cov txheej txheem, thiab thawj txheej txheem feem ntau yog txheej txheem blanking. Ua ntej tshaj plaws, nws yog ib qho tsim nyog yuav tsum tau ua raws li kev suav ntawm cov khoom siv nthuav dav, thiab muaj kev nkag siab dav dav ntawm cov duab thiab qhov loj ntawm qhov khoob thiaj li txiav txim siab tag nrho qhov loj ntawm qhov blanking tuag. Tsis txhob ua cov punch thiab tuag qhov ntev ntawm lub blanking tuag tom qab tsim pwm tiav. Qhov dawb paug yog thawj zaug ua tiav los ntawm kev txiav hlau (thaum lub qhov khoob loj, nws tuaj yeem raug milled los ntawm lub tshuab milling thiab tom qab ntawd clamped). Tom qab rov ua qhov kev sim hauv cov txheej txheem txuas ntxiv tom ntej, qhov loj ntawm qhov khoob yog thaum kawg txiav txim siab, thiab tom qab ntawd cov pwm thiab concave pwm ntawm cov blanking tuag tau ua tiav.
kev paub 1
Inverting cov txheej txheem, sim cov duab tuag ua ntej, thiab tom qab ntawd ua cov txheej txheem blanking ntug loj ntawm qhov khoob, uas yuav tau txais ob zaug qhov tshwm sim nrog ib nrab ntawm kev siv zog.
4. Stretch coefficient m
Stretching coefficient yog ib qho ntawm cov txheej txheem tseem ceeb hauv kev suav cov txheej txheem stretching, thiab nws feem ntau yog siv los txiav txim qhov sib lawv liag thiab lub sij hawm ntawm stretching.
Muaj ntau yam uas cuam tshuam rau kev ncab coefficient m, suav nrog cov khoom siv, cov khoom sib txawv ntawm cov ntaub ntawv, txoj kev ncab (nrog lossis tsis muaj qhov khoob), ncab lub sij hawm, ncab ceev, lub vojvoog ntawm punch thiab tuag fillet, lubrication, thiab lwm yam.
Kev suav thiab xaiv cov hauv paus ntsiab lus ntawm tensile coefficient m yog cov ntsiab lus tseem ceeb qhia hauv ntau phau ntawv stamping. Muaj ntau txoj hauv kev xws li suav, saib lub rooj, thiab suav. .
kev paub 2
Qhov txheeb ze ntawm cov khoom siv, txoj kev ncab (xws li seb puas muaj ib qho khoob khoob), thiab tus naj npawb ntawm cov stretches tsis yooj yim kho thaum kho cov pwm, yog li ceev faj. Nws yog qhov zoo tshaj plaws los nrhiav ib tus npoj yaig los xyuas nws thaum xaiv qhov stretch coefficient m.
Tsib, kev xaiv ntawm kev ua cov roj
Kev xaiv cov roj ua haujlwm tseem ceeb heev. Txoj hauv kev kom paub qhov txawv ntawm cov roj lubricating yog qhov tsim nyog yog tias thaum cov khoom raug tshem tawm ntawm cov pwm, yog tias qhov kub ntawm cov khoom yog siab dhau los ntawm tes, kev xaiv cov roj lubricating thiab cov txheej txheem ntawm lubrication yuav tsum tau rov xav dua. , thiab lubricating roj yog siv rau qhov tuag, los yog npog lub hnab zaj duab xis ntawm daim ntawv.
kev paub 3
Nyob rau hauv qhov kev tshwm sim ntawm stretching thiab cracking, thov lubricating roj ntawm lub tuag (tsis yog nyob rau hauv lub punch), thiab npog lub workpiece nrog ib tug yas zaj duab xis ntawm {{0}}.013-0.018mm nyob rau sab ntawm lub tuag. .
6. Kev kho cua sov workpiece
Txawm hais tias nws tsis pom zoo, nws tseem yuav tsum tau hais tias thaum lub sij hawm stretching txheej txheem, lub workpiece yog hardened vim txias yas deformation, uas txo nws cov plasticity thiab tsub kom nws deformation kuj thiab hardness. Tsis tas li ntawd, cov pwm tsim yog tsis tsim nyog, yog li nws yog ib qho tsim nyog yuav tsum tau nqa tawm Intermediate annealing kom soften cov hlau thiab restore plasticity.
Nco tseg: Intermediate annealing tsis tsim nyog hauv cov txheej txheem dav dav. Tom qab tag nrho, nws yuav nce tus nqi. Nws yog ib qho tsim nyog yuav tau xaiv ntawm kev nce tus txheej txheem thiab nce qhov annealing. Siv nrog ceev faj!
Annealing feem ntau siv qhov kub thiab txias annealing, uas yog, recrystallization annealing. Muaj ob yam uas yuav tsum tau them sai sai rau thaum annealing: decarburization thiab oxidation. Ntawm no peb tsuas yog tham txog oxidation. Tom qab lub workpiece yog oxidized, muaj cov nplais, uas muaj ob yam teeb meem: qhov zoo thickness ntawm lub workpiece yog thinned, thiab hnav ntawm pwm yog nce.
Thaum lub tuam txhab cov xwm txheej tsis muaj, feem ntau siv annealing zoo tib yam. Yuav kom txo tau qhov tsim ntawm nplai, lub cub tawg yuav tsum tau ntim kom ntau li ntau tau thaum lub sij hawm annealing. Kuv kuj siv lub ntiaj teb txoj kev:
1. Thaum muaj ob peb workpieces, nws muaj peev xwm muab tov nrog lwm yam workpieces (qhov chaw: lub annealing txheej txheem tsis yuav tsum yeej ib txwm zoo tib yam).
2. Muab cov khoom ua haujlwm tso rau hauv lub thawv hlau thiab vuam ua ntej thauj khoom rau hauv qhov cub. Txhawm rau tshem tawm nplai, pickling yuav tsum tau nqa tawm raws li qhov xwm txheej tom qab annealing.
Thaum lub tuam txhab tej yam kev mob muaj, nitrogen furnace annealing, uas yog, kaj annealing, yuav siv tau. Yog tias koj tsis saib ze, nws yuav luag tib xim li ua ntej annealing.
kev paub 4
Thaum ua haujlwm nrog cov hlau uas ua kom tawv tawv los ntawm kev ua haujlwm txias lossis thaum tsis muaj lwm txoj hauv kev tawg hauv cov pwm kuaj, cov txheej txheem nruab nrab annealing yuav tsum tau ntxiv.
Xya, ntxiv ob peb ntsiab lus
1. Qhov luaj li cas ntawm cov khoom kos duab yuav tsum tau muab cim rau ntawm ib sab kom ntau li ntau tau kom paub meej seb puas yuav xyuas kom meej qhov loj me lossis cov kab noj hniav sab hauv, thiab qhov ntev ntawm sab hauv thiab sab nraud tsis tuaj yeem raug cim tib lub sijhawm. Yog tias muaj teeb meem zoo li no hauv cov duab kos los ntawm lwm tus, koj yuav tsum sib txuas lus nrog lawv. Yog lawv tuaj yeem koom ua ke, lawv yuav tsum koom ua ke. Yog tias lawv tsis tuaj yeem koom ua ke, koj yuav tsum paub txog kev sib koom ua ke ntawm cov khoom ua haujlwm thiab lwm qhov chaw.
2. Rau cov txheej txheem kawg, qhov loj ntawm lub workpiece yog sab nraud, feem ntau yog qhov tuag, thiab qhov sib txawv yog tau los ntawm kev txo qhov loj ntawm cov punch; qhov loj ntawm lub workpiece yog sab hauv, feem ntau yog cov punch, thiab qhov sib txawv yog tau los ntawm kev nce qhov loj ntawm qhov tuag;
3. Lub vojvoog fillet ntawm lub convex thiab concave tuag yuav tsum tau tsim nrog ib tug me me tso cai tus nqi ntau npaum li ua tau kom yooj yim rau kev kho pwm tom ntej.
4. Thaum txiav txim siab vim li cas rau qhov tawg ntawm lub workpiece, koj tuaj yeem xa mus rau: cov kab nrib pleb uas tshwm sim los ntawm cov khoom siv tsis zoo feem ntau yog jagged los yog tsis sib xws, thiab cov kab nrib pleb tshwm sim los ntawm cov txheej txheem thiab pwm feem ntau zoo zoo.
5. "Ntau yuav wrinkle, tsawg yuav tawg". Raws li txoj cai no, kho qhov ntws ntawm cov khoom siv. Cov txheej txheem suav nrog kev kho lub siab ntawm qhov khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob
6. Txhawm rau kom ntseeg tau tias hnav tsis kam thiab tiv thaiv tensile khawb, cov punch thiab tuag thiab cov yas dhos yuav tsum tau quenched, tawv chrome plating kuj siv tau, thiab qhov chaw kuj tuaj yeem kho nrog TD. Thaum tsim nyog, tungsten steel tuaj yeem siv los ua cov punch thiab tuag.
