Khoom Paub meej
Stretching pwm kev lag luam pwm chaw tsim tshuaj paus
Xaiv cov tuam ntxhab zoo rau kev kos duab tuag tsim
Kos tuag taw qhia thiab txheej txheem yam ntxwv
Kev kos duab (tseem hu ua kev kos duab, kos duab sib sib zog nqus) yog ib qho txheej txheem hauv kev siv tshuab stamping vim nws tsim nyog rau txhua qhov chaw ntawm lub neej thiab muaj kev ua tau zoo. Los ntawm qhov khoob mus rau kev sib sau, nws yuav tsum tau ua kom tiav hauv ntau cov kauj ruam, thawj stretching ----secondary stretching ----forming.Cov pwm yuav muaj ntau yam teeb meem thaum lub sij hawm stretching. Tej teeb meem xws li: wrinkling, sab saum toj R cracking, cov khoom nto strain, stretching qhov siab yog siab dhau los yog luv luv, thiab lwm yam ... Ib tug series ntawm cov lus nug. Yog li ntawd, cov txheej txheem stretching kuj yog ib qho nyuaj point nyob rau hauv lub stamping tuag.
Cov nram qab no Dongmo yuav qhia txog cov yam ntxwv ntawm cov hlau kos duab tuag rau koj:
Ua ntej, lub tswvyim ntawm stretching:
1. Stretching: Nias daim ntawv rau hauv ib qho hollow (phab ntsa thickness yog qhov pib tsis hloov).
2. Cov txheej txheem ncab: cov khoom ntawm lub dav hlau (flange) raug xa mus rau sab phab ntsa ntawm lub tog raj kheej (lub thawv), yog li tag nrho qhov ntev ntawm lub dav hlau hloov pauv zoo heev.
3. Stretching coefficient: qhov sib piv ntawm cov duab kos mus rau qhov khoob ntawm txoj kab uas hla "m" (qhov degree ntawm deformation ntawm qhov khoob mus rau qhov chaw ua haujlwm).
Thib ob, lub ntsiab tseem ceeb cuam tshuam rau tensile coefficient:
1. Mechanical zog ntawm cov ntaub ntawv (yielding zog - elastic deformation; tensile zog - yas deformation; elongation coefficient; seem shrinkage tus nqi)
2. Tus txheeb ze thickness ntawm cov khoom.
3. Lub sij hawm ncab.
4. Txoj kev ncab.
5. Lub kaum sab xis ntawm convex thiab concave tuag.
6. Lashen ua hauj lwm nto tiav thiab lubrication tej yam kev mob, clearance, thiab lwm yam.
7. Stretching ceev.
Thib ob, lub ntsiab tseem ceeb cuam tshuam rau tensile coefficient:
1. Mechanical zog ntawm cov ntaub ntawv (yielding zog - elastic deformation; tensile zog - yas deformation; elongation coefficient; seem shrinkage tus nqi)
2. Tus txheeb ze thickness ntawm cov khoom.
3. Lub sij hawm ncab.
4. Txoj kev ncab.
5. Lub kaum sab xis ntawm convex thiab concave tuag.
6. Lashen ua hauj lwm nto tiav thiab lubrication tej yam kev mob, clearance, thiab lwm yam.
7. Stretching ceev
Thib peb, cov txheej txheem stretching:
1. Qhov chaw nrog cov khoom siv thinner thiab loj dua qhov tob ntawm txoj kab uas hla: txoj kev txo txoj kab uas hla ntawm lub tog raj kheej kom nce qhov siab, thiab lub vojvoog ntawm cov fillet tuaj yeem ua tiav me me.
2. Qhov chaw nrog cov khoom tuab thiab cov duab zoo sib xws ntawm qhov tob thiab txoj kab uas hla: nws tuaj yeem siv los txo cov vojvoog fillet hauv cov txheej txheem ntawm maj mam txo cov cylindrical txoj kab uas hla thaum tswj qhov siab tib yam.
3. Lub flange yog loj thiab lub vojvoog me me: nws yuav tsum tau ua tiav los ntawm ntau qhov sib txawv.
4. Thaum lub flange loj dhau: txais yuav txoj kev nthuav dav yog tias tsim nyog.
Yuav kom muaj kev cuam tshuam lub hauv paus ntsiab lus ntawm "flange tsis hloov", lub flange tsim los ntawm thawj stretching tsis koom nyob rau hauv lub tom ntej stretching deformation, thiab lub dav flange yog stretched kom txo tau cov khoom ntawm thawj tuag (uas yog, cov ntaub ntawv uas tsim. phab ntsa thiab hauv qab). Yuav tsum muaj 3-10 feem pua ntawm cov khoom siv ntau dua li qhov xav tau los ua kom tiav qhov kawg stretch.
Nco tseg: Thaum tus naj npawb ntawm stretches yog xam los ntawm cheeb tsam, coj lub sab sauv txwv, txwv tsis pub coj tus nqi qis. Cov khoom siv ntau dhau no yuav maj mam rov qab mus rau lub flange tom qab ncab, ua rau lub flange kom tuab tab sis kom tsis txhob tawg lub taub hau, thiab thaj chaw thinning tuaj yeem raug kho los ntawm shaping. Yog li ntawd, nws yog ib qho tseem ceeb heev uas yuav tsum nruj me ntsis tswj qhov siab ntawm txhua stretch thaum stretching.
Plaub, lub thawv stretching
Lub kaum sab xis yog sib npaug rau qhov ncab ntawm lub tog raj kheej, thiab cov phab ntsa ncaj nraim yog sib npaug rau qhov khoov deformation;
Thib tsib, stretch lubrication
Thaum lub sij hawm stretching txheej txheem, muaj kev sib txhuam ntawm cov khoom thiab cov tuag, yog li yuav tsum muaj ib tug tshwj xeeb stamping thiab stretching lubricating roj. Kev sib txhuam loj loj yuav tsis tsuas yog ua kom lub zog tensile coefficient, tab sis kuj nce lub tensile quab yuam thiab hnav thiab khawb qhov tuag thiab cov cuab yeej. Lub inter-nto yog li detrimental, yog li lubrication tej yam kev mob yog tsim nyog thaum stretching.
Cov saum toj no yog cov lus qhia luv luv thiab cov yam ntxwv ntawm Dongmo yog qhov kos duab tuag. Txawm hais tias qee qhov teeb meem nrog kev kos duab tuag yog qhov mob taub hau, muaj kev daws teeb meem. Tsuav yog ob lub ntsiab lus ntawm "kev quab yuam" thiab "qhov sib txawv" tau ua tiav, ntau yam teeb meem tuaj yeem daws tau yooj yim.
Cim npe nrov: stretching pwm kev pwm chaw tsim tshuaj paus, Tuam Tshoj, lwm tus neeg, manufacturers, hoobkas, yuav, nqi, ua nyob rau hauv Suav teb
