Twisting: Yog tias ib qho kawg ntawm cov xov paj spinning tau tuav thiab lwm qhov kawg yog tig, ib txoj xov yog tsim, txheej txheem hu ua twisting.
Twisting tsim cuam tshuam rau lub cev thiab txhua yam khoom thiab cov tsos ntawm cov hlua, xov paj, thiab xov, thiab tom qab ntawd muaj kev cuam tshuam zoo rau cov khoom, zoo li, thiab siv tus nqi ntawm cov ntaub.
Rau staple yarns, twisting yog ib qho tsim nyog rau cov xov paj kom tau lub zog thiab lwm yam ntxwv; rau filament yarns thiab strands, twisting muaj peev xwm tsim ib tug compact qauv uas tsis yooj yim puas los ntawm sab nraud quab yuam. Twisting tuaj yeem tsim cov xov paj zoo nkauj thiab cov xov paj zoo nkauj. Tus nqi ntawm twisting thiab kev taw qhia ntawm twisting tsis tsuas yog cuam tshuam rau kev xav thiab tsos ntawm cov ntaub, tab sis kuj cuam tshuam rau sab hauv zoo ntawm cov ntaub.
1. Lub hom phiaj thiab kev xav tau ntawm kev sib tw
Twisting yog ib qho tsim nyog txhais tau tias ua fiber ntau strips rau hauv yarns. Ua ntej twisting, nws yog feem ntau yuav tsum condense xoob fibers rau hauv fiber ntau strips. Tom qab twisting, txheej txheej fibers ntawm cov fibers yog extruded mus rau lub puab txheej los tsim centripetal siab, thiaj li hais tias cov strands raws li qhov ntev ntawm cov fibers tau txais kev sib txhuam.
Qhov yuav tsum tau muaj: tau lub zog zoo tshaj plaws, elongation, elasticity, yooj, gloss thiab txhais tes zoo li ntawm cov xov paj; diversify tus qauv ntawm cov xov paj; txhim kho qhov twisting efficiency ntawm cov xov paj.
2. Cov ntsuas ntawm cov xov paj twisting degree muaj xws li twist degree, twist lub kaum ntse ntse, twist amplitude thiab twist coefficient. Qhov ntsuas qhov taw qhia ntawm kev sib tw yog hu ua twist direction.
Twist: Ob ntu ntawm cov xov paj tsim 360 degree angular hloov chaw, uas dhau los ua qhov sib tw, uas feem ntau hu ua tig.
Tus naj npawb ntawm twists ib chav tsev ntev ntawm cov xov paj yog hu ua twist. kuv lub teb chaws cov paj rwb-type yarn txais kev sib tw ntawm cov xov tooj tshwj xeeb, uas yog qhia los ntawm cov xov tooj ntawm cov xov paj ntev ntawm 10 cm; qhov twist ntawm combed wool yarn thiab chemical fiber filament adopts metric suav system, uas yog qhia los ntawm tus naj npawb ntawm twists ib 'meter'; Nyob rau hauv tas li ntawd, tseem muaj ib tug imperial suav system twist qhia nyob rau hauv tus naj npawb ntawm twists ib nti.
Twisting lub kaum sab xis: Ua ntej twisting, cov fibers hauv cov xov paj yog sib npaug rau ib leeg, thiab tom qab twisting, cov fibers yog inclined. Qhov ntau dua qhov kev sib tw ntawm cov xov paj, qhov ntau dua qhov inclination ntawm cov fiber ntau, thiab cov degree ntawm twisting tau qhia los ntawm lub inclination lub kaum sab xis ntawm lub fiber nyob rau hauv cov xov paj - lub twist lub kaum sab xis.
Ob lub xov paj nrog tib qhov sib tw muaj qhov sib txawv ntawm kev sib tw vim lawv cov thicknesses sib txawv. Cov xov paj thicker muaj ntau dua qhov sib tw thiab lub kaum sab xis loj dua.
Twist amplitude: Yog hais tias tus ntoo khaub lig ntawm cov xov paj suav hais tias yog lub voj voog, cov ces kaum ntawm cov fibers ntawm txawv radii thiab axial kev taw qhia ntawm cov xov paj txawv.
Twist coefficient: Twist tsis tuaj yeem siv los sib piv cov qib ntawm kev sib tw ntawm cov xov paj sib txawv, vim tias nrog tib qhov sib tw, qhov degree ntawm inclination ntawm cov fibers ntawm cov xov paj tuab yog ntau dua li cov xov paj nyias. Hauv kev tsim khoom tiag tiag, tus twist coefficient feem ntau yog siv los qhia txog qib ntawm kev sib tw ntawm cov xov paj. Twist coefficient yog tus txheeb ze tus nqi ntawm cov xov paj twisting degree ua ke nrog linear ntom, uas tuaj yeem siv los sib piv cov kev sib tw ntawm cov xov paj sib txawv. Lub twist coefficient tuaj yeem xam raws li qhov sib tw ntawm cov xov paj thiab cov kab tawm ntawm cov xov paj.
Twist kev taw qhia: Cov kev taw qhia twist yog hais txog qhov inclined kev taw qhia ntawm cov fibers nyob rau hauv ib tug xov tooj los yog ib tug xov tooj nyob rau hauv lub strand tom qab lub xov yog twisted. Nws muab faib ua Z twist thiab S twist. Tom qab twisting, txoj kev sib tw ntawm cov xov paj yog los ntawm lub kaum sab xis ntawm sab xis mus rau sab laug sab sauv, thiab cov kev taw qhia inclination yog zoo ib yam nrog rau nruab nrab ntawm "S", uas yog hu ua S twist los yog tes twist; Txoj kev sib tw ntawm cov xov paj yog los ntawm sab laug sab laug mus rau sab xis sab xis, thiab cov kev taw qhia inclination yog tib yam li "S". Qhov nruab nrab ntawm Z" yog hu ua Z twist lossis rov qab twist.
Cov kev taw qhia twist ntawm cov strands yog sawv cev los ntawm cov kev taw qhia twist ntawm successive twists. Piv txwv li, yog cov xov paj ib leeg yog Z twist, thawj twist yog S twist, thiab ob lub twist yog Z twist, qhov kev taw qhia twist yog sawv cev los ntawm ZSZ.
Cov kev taw qhia twist ntawm cov xov paj muaj kev cuam tshuam zoo rau cov tsos thiab kev xav ntawm cov ntaub. Siv cov kev taw qhia twist ntawm warp thiab weft yarns los koom tes nrog cov qauv ntaub, fabrics nrog ntau yam xws li tsos thiab xav tau woven.
Nyob rau hauv lub tiaj weave ntaub, yog hais tias lub warp thiab weft yarns twisted nyob rau hauv tib txoj kev, cov ntaub tsim yuav muaj zog, tab sis lub gloss yuav tsis zoo thiab tus kov yuav nyuaj. Rau twill weave fabrics, yog hais tias lub twist kev taw qhia ntawm cov xov paj yog opposite rau ntawm cov twill kab, cov kab twill yuav meej thiab tag nrho.
Z-twisted yarns thiab S-twisted yarns yog teem caij nyob rau hauv cov ntaub, uas muaj peev xwm muab zais kab sib chaws thiab zais kab txaij. Z-twisted yarn thiab S-twisted yarn yog ua ke thiab twisted los tsim wrinkle nyhuv thiab lwm yam.
Yuav ua li cas txiav txim qhov twist kev taw qhia ntawm ib tug xov paj:
Sab laug tes yog tsau, thiab cov kev taw qhia ntawm cov ntsia hlau ntsia hlau nrog sab tes xis yog S twist.
Sab laug tes yog tsau, thiab cov kev taw qhia ntawm tig lub ntsia hlau nrog sab tes xis yog Z twist;
Twist shrinkage: Tom qab twisting, qhov ntev ntawm cov xov paj yog luv vim qhov inclination ntawm cov fibers, uas ua rau twist shrinkage. Qhov loj ntawm qhov twist shrinkage feem ntau yog qhia los ntawm tus nqi twist shrinkage, uas yog, qhov feem pua ntawm qhov sib txawv ntawm qhov ntev ntawm lub sliver ua ntej thiab tom qab twisting mus rau qhov ntev ua ntej twisting.
Qhov luaj li cas ntawm cov twist shrinkage ncaj qha cuam tshuam rau linear ceev thiab twist ntawm spun yarn, uas yuav tsum tau xav txog nyob rau hauv tus tsim ntawm lub spinning thiab twisting txheej txheem. Lub ntswj shrinkage ntawm paj rwb xov paj feem ntau yog 2 feem pua ~ 3 feem pua. Qhov luaj li cas ntawm cov twist shrinkage tsis yog tsuas yog cuam tshuam nrog kev sib tw twist, tab sis kuj muaj feem xyuam rau kev sib tw spinning, rhiav kub thiab av noo, xov paj thickness thiab lwm yam.
3. Muaj tseeb twisting thiab cuav twisting
(1) Qhov tseeb twist
Tom qab qhov tseeb twist tau txais ntawm lub sliver, cov txheej fiber ntau yuav tsim ib qho inclined helical twist, fiber ntau yuav twisted thiab deformed, thiab sliver yuav nruj nreem entangled, hloov cov structural puab thiab mechanical zog ntawm lub fiber collective.
Thaum muaj lub kaum sab xis ntawm lub sliver, cov fiber ntau muaj lub siab centripetal ntawm lub sliver, thiab qhov loj dua lub kaum sab xis, qhov siab dua centripetal. Vim yog lub centripetal siab, txheej txheej ntawm fibers yog nyem rau ntawm lub puab txheej, ua kom nruj ntawm lub sliver thiab kev sib txhuam ntawm cov fibers, yog li hloov cov qauv duab thiab lub cev thiab mechanical zog ntawm lub sliver, uas yog muaj tseeb. twist Lub essence ntawm cov xov paj.
Qhov saum toj no-hais twist degree, twist lub kaum ntse ntse, twist dav, twist coefficient, twist kev taw qhia thiab twist shrinkage yog cov cim ntawm qhov tseeb twist degree.
(2) False twist
Tuav ob qhov kawg ntawm lub multifilament, thiab twist los ntawm lub twisting ntaus ntawv nyob rau hauv nruab nrab ntawm ob kawg ntawm lub multifilament, thiab lub multifilament yuav tau txais daim duab twist nrog lub opposite twist kev taw qhia thiab tib tus naj npawb ntawm ob kawg ntawm lub twisting ntaus ntawv : ib kawg yog S twist, thiab lwm yam yog twisted. Ib qho kawg yog Z twist. Thiab qhov sib tw twist ntawm tag nrho cov xov paj yog 0.
Nyob rau hauv cov nqe lus ntawm layman, nws yog kho ob kawg ntawm ib tug hlua thiab twist nws nyob rau hauv nruab nrab. Ib sab yog twisted nruj dua thiab nruj dua, thiab txawm hais tias lwm sab yog twisted tighter thiab tighter, lub twist kev taw qhia yog opposite. Yog li ntawd, tag nrho cov twists ntawm txoj hlua tsis tau hloov, nws tseem yog 0, yog li qhov ntxiv yog hu ua cuav twist.