Mukamayang'ana zingwe zabwino kwambiri ndi mawaya, kusankha zomangira zoyenera ndikofunikira. Chovala chakunja chimakhala ndi ntchito zosiyanasiyana kuti zitsimikizire kukhazikika, chitetezo ndi magwiridwe antchito a chingwe kapena waya. Si zachilendo kusankha pakati polyurethane (PUR) ndipolyvinyl chloride (PVC). M'nkhaniyi, muphunzira za kusiyana kwa magwiridwe antchito pakati pa zida ziwirizi ndi ntchito zomwe chilichonse chili choyenera.
Kapangidwe ka sheathing ndi ntchito mu zingwe ndi mawaya
Sheath (yomwe imatchedwanso sheath yakunja kapena sheath) ndi gawo lakunja la chingwe kapena waya ndipo imagwiritsidwa ntchito pogwiritsa ntchito njira zingapo zotulutsira. Sheath imateteza ma kondakitala a zingwe ndi zida zina zamapangidwe kuchokera kuzinthu zakunja monga kutentha, kuzizira, konyowa kapena kukhudzidwa kwamankhwala ndi makina. Ithanso kukonza mawonekedwe ndi mawonekedwe a kondakitala wotsekeka, komanso wosanjikiza wotchinga (ngati alipo), potero kuchepetsa kusokoneza kwa chingwe cha electromagnetic compatibility (EMC). Izi ndizofunikira kuti zitsimikizire kufalikira kwamphamvu, chizindikiro, kapena deta mkati mwa chingwe kapena waya. Sheathing imathandizanso kwambiri pakukhazikika kwa zingwe ndi mawaya.
Kusankha bwino sheathing chuma n'kofunika kudziwa chingwe bwino ntchito iliyonse. Choncho, ndikofunika kudziwa bwino cholinga chomwe chingwe kapena waya ayenera kuchita komanso zofunikira zomwe ziyenera kukwaniritsa.
Ambiri sheathing zakuthupi
Polyurethane (PUR) ndi polyvinyl chloride (PVC) ndi zida ziwiri zomwe zimagwiritsidwa ntchito kwambiri popangira zingwe ndi mawaya. Zowoneka, palibe kusiyana pakati pa zinthuzi, koma zimawonetsa zinthu zosiyanasiyana zomwe zimawapangitsa kukhala oyenera kugwiritsa ntchito zosiyanasiyana. Kuphatikiza apo, zida zina zingapo zitha kugwiritsidwa ntchito ngati zida zowotchera, kuphatikiza mphira wamalonda, ma thermoplastic elastomers (TPE), ndi zida zapadera zapulasitiki. Komabe, popeza ndizochepa kwambiri kuposa PUR ndi PVC, tidzangofanizira ziwirizi mtsogolomu.
PUR - chinthu chofunikira kwambiri
Polyurethane (kapena PUR) amatanthauza gulu la mapulasitiki opangidwa kumapeto kwa zaka za m'ma 1930. Amapangidwa ndi njira yamankhwala yotchedwa Kuwonjezera polymerization. Zopangira zake nthawi zambiri zimakhala mafuta, koma zinthu zobzala monga mbatata, chimanga kapena ma beets a shuga zitha kugwiritsidwanso ntchito popanga. Polyurethane ndi thermoplastic elastomer. Izi zikutanthauza kuti amasinthasintha akatenthedwa, koma amatha kubwerera ku mawonekedwe awo oyambirira akatenthedwa.
Polyurethane ili ndi zida zabwino zamakina. Zinthuzo zimakhala ndi kukana kwabwino kwa kuvala, kukana kudula ndi kugwetsa misozi, ndipo zimakhala zosinthika kwambiri ngakhale kutentha kochepa. Izi zimapangitsa PUR kukhala yoyenera kwambiri pamapulogalamu omwe amafunikira kuyenda kosunthika komanso kupindika, monga maunyolo okoka. Pakugwiritsa ntchito kwa robotic, zingwe zokhala ndi PUR sheathing zimatha kupirira mamiliyoni ozungulira kuzungulira kapena mphamvu zolimba zamphamvu popanda zovuta. PUR imakhalanso ndi mphamvu yotsutsa mafuta, zosungunulira ndi cheza cha ultraviolet. Kuphatikiza apo, kutengera kapangidwe kazinthuzo, ndizopanda halogen komanso zowotcha moto, zomwe ndizofunikira pazingwe zomwe zili ndi UL certified ndikugwiritsidwa ntchito ku United States. Zingwe za PUR zimagwiritsidwa ntchito kwambiri pomanga makina ndi fakitale, makina opanga mafakitale, komanso makampani amagalimoto.
PVC - chinthu chofunika kwambiri
Polyvinyl chloride (PVC) ndi pulasitiki yomwe yakhala ikugwiritsidwa ntchito kupanga zinthu zosiyanasiyana kuyambira 1920s. Ndiwopangidwa ndi polymerization ya gasi ya vinyl chloride. Mosiyana ndi elastomer PUR, PVC ndi polima thermoplastic. Ngati zinthuzo zapunduka potenthedwa, sizingabwezeretsedwe ku chikhalidwe chake choyambirira.
Monga zinthu zopangira sheathing, polyvinyl chloride imapereka mwayi wosiyanasiyana chifukwa imatha kutengera zosowa zosiyanasiyana posintha chiŵerengero chake. Kuthekera kwake kwamakina sikuli kokwera ngati PUR, koma PVC imakhalanso yotsika mtengo kwambiri; Mtengo wapakati wa polyurethane ndi wokwera kanayi. Kuphatikiza apo, PVC ndi yopanda fungo komanso yosamva madzi, asidi ndi zoyeretsa. Ndichifukwa chake nthawi zambiri amagwiritsidwa ntchito m'makampani azakudya kapena m'malo achinyezi. Komabe, PVC siwopanda halogen, chifukwa chake imawonedwa ngati yosayenera kugwiritsa ntchito m'nyumba. Kuphatikiza apo, sizodziwikiratu mafuta, koma katunduyu atha kupezedwa ndi zina zapadera zamankhwala.
Mapeto
Onse polyurethane ndi polyvinyl kolorayidi ali ndi ubwino ndi kuipa kwawo monga chingwe ndi waya sheathing zipangizo. Palibe yankho lotsimikizika pa zomwe zili zabwino kwambiri pakugwiritsa ntchito kulikonse; Zambiri zimatengera zosowa za munthu payekha pakugwiritsa ntchito. Nthawi zina, chinthu chosiyana kwambiri cha sheathing chikhoza kukhala yankho labwino kwambiri. Choncho, timalimbikitsa ogwiritsa ntchito kuti apeze uphungu kwa akatswiri omwe amadziwa zabwino ndi zoipa za zipangizo zosiyanasiyana ndipo amatha kulemerana wina ndi mzake.
Nthawi yotumiza: Nov-20-2024