Mu mapulojekiti obisika aukadaulo—monga ngalande, sitima zapansi panthaka, ndi malo ogwirira ntchito pansi pa nthaka—ma nembanemba osalowa madzi samangokhala zotchinga zolekanitsa madzi, komanso ngati “zida zosinthasintha” zomwe zimatenga nawo mbali pakulamulira kupsinjika kwa kapangidwe kake. Monga wopanga wapadera m'munda wa geosynthetics, Shandong Hongyue Environmental Engineering Co., Ltd. (yomwe pano imatchedwa “Hongyue Environmental”) yagwiritsa ntchito ukadaulo wake wozama mu nembanemba zoteteza madzi za EVA (Ethylene-Vinyl Acetate Copolymer) kuti apange njira yomanga yasayansi, yolimba, komanso yokhazikika. Kudzera mu njira zitatu zazikulu—“kusankha bwino zinthu, kuwotcherera mosamala, ndi kupsinjika kokhazikika”—kampaniyo imagwiritsa ntchito bwino kwambiri nembanemba za EVA, kuphatikiza kutalika kwambiri, kukana kutentha kwambiri, komanso mphamvu yong'ambika, potero imakhazikitsa chitetezo chosagonjetseka cha madzi pamapulojekiti osiyanasiyana aukadaulo.
Gawo Loyamba: Kusankha Zinthu Molondola ndi Kukonzekera Pansi pa Chidebe—Kuyika Maziko Opanda Chilema
Ntchito yoteteza madzi ya EVA ya Hongyue Environmental imayamba ndi kulamulira bwino zinthu. Ma nembanemba oteteza madzi a EVA amagwiritsa ntchito Ethylene-Vinyl Acetate Copolymer yapamwamba ngati zinthu zawo zazikulu zopangira; amawonetsa kusinthasintha kofanana ndi rabara, ali ndi kusinthasintha kwabwino kwambiri kutentha (kusunga kusinthasintha ngakhale m'malo ozizira kuyambira -30°C mpaka -35°C), ndipo ali ndi mphamvu zambiri zong'ambika. Asanamangidwe, gawo lapansi liyenera kukonzedwa bwino: pamwamba pake payenera kukhala lathyathyathya, lolimba, komanso lopanda zolakwika kapena zinthu zakuthwa, pomwe nthawi yomweyo likuonetsetsa kuti palibe madzi oima, madontho a mafuta, ndi fumbi. Kutengera kukula kwa polojekitiyi ndi malo ake ogwirira ntchito, Hongyue Environmental imapereka ma nembanemba oteteza madzi a EVA opangidwa mwamakonda m'makulidwe osiyanasiyana—kuyambira 0.5 mm mpaka 2.5 mm—kuti atsimikizire kuti pali mgwirizano wabwino pakati pa magwiridwe antchito azinthu ndi zofunikira zaukadaulo.
Gawo Lachiwiri: Njira Zolimba Zowotcherera—Kudziwa Nthawi Yokhala ndi Dongosolo Lothirira Madzi
Pakumanga pamalopo, kudalirika kwa nembanemba yoteteza madzi kumadalira 90% pa ubwino wa welding yotenthetsera mpweya wotentha. Gulu laukadaulo la Hongyue Environmental likugogomezera kuti lingaliro lolakwika loti welding ingokhala "ntchito yophimba" liyenera kusiyidwa; m'malo mwake, liyenera kuyikidwa patsogolo ngati njira yofunika kwambiri. Ntchito yomanga iyenera kuchitika pogwiritsa ntchito makina apadera owetsera kapena mfuti zotenthetsera mpweya wotentha, ndi kutentha kwa mpweya wotuluka kuyenera kuyendetsedwa bwino mkati mwa 320°C mpaka 380°C. Musanayambe welding, m'lifupi mwake pakati pa mapepala oyandikana ndi nembanemba uyenera kuyendetsedwa bwino pakati pa 70 mm ndi 100 mm, ndipo burashi yachitsulo iyenera kugwiritsidwa ntchito kuchotsa fumbi lililonse la pamwamba kapena zigawo zosungunuka m'malo ozungulira. Pakuwotcherera, kutentha kwakukulu kumayikidwa kuti kusungunuke pamwamba pa zinthu za EVA, kutsatiridwa ndi kugwiritsa ntchito mphamvu kuti ziphatikize zigawozo kukhala chinthu chimodzi chogwirizana. Kutsimikizira pambuyo pa welding kumaphatikizapo njira yowunikira yolimba ya magawo atatu: Choyamba, kuwunika kowoneka bwino kumachitika kuti zitsimikizire kuti weld seam ikuwoneka ngati yofanana, yowonekera, yofanana ndi galasi, yopanda thovu kapena makwinya. Chachiwiri, mayeso a makina oyeretsera amachitidwa; mphamvu yokoka ikagwiritsidwa ntchito molunjika pa msoko wowotcherera, iyenera kukhala yolimba popanda kusweka. Chachitatu, ngati pakufunika, mayeso a kukwera kwa mpweya amachitidwa kuti atsimikizire kuti kuwola kulikonse kwa mphamvu kumakhalabe mkati mwa malire okhazikika.
Gawo 3: Kusakhazikika kwa Sayansi ndi Kuyika—Kuchotsa Chiwopsezo cha “Zosefera Zonyenga”
Pa nthawi yomanga m'malo ovuta—monga korona za ngalande—kulemera kwa zinthuzo kungayambitse kugwedezeka mosavuta, zomwe zimapangitsa kuti pakhale “ma weld abodza” (mizere yosakwanira kapena yofooka). Hongyue Environmental Protection ikufotokoza makamaka kufunika kogwiritsa ntchito njira ya “zoned tensioning and segmented welding”. Izi zimaphatikizapo poyamba kulumikiza nembanemba yoteteza madzi ku substrate pogwiritsa ntchito ma sling apadera omwe ali pamtunda wa pafupifupi 300mm; kenako kugwedezeka kumatulutsidwa gawo ndi gawo, ndipo kuwotcherera kumachitika nthawi imodzi. Njirayi imaletsa bwino kuchitika kwa ma weld abodza omwe amayamba chifukwa cha kugwedezeka kwa zinthu pansi pa kulemera kwake, potero kuonetsetsa kuti pali mgwirizano wolimba pakati pa nembanemba yoteteza madzi ndi kapangidwe kothandizira koyamba. Kuphatikiza apo, nembanemba yoteteza madzi ya EVA imagwirizana kwambiri ndi zomatira zosiyanasiyana; panthawi yokonza mwatsatanetsatane ngodya, kulowa kwa mapaipi, ndi madera ena ovuta, zomatira zapadera zitha kugwiritsidwa ntchito kuti zitseke mwachangu komanso moyenera, motero zimawonjezera kusalowa kwa makina oteteza madzi.
Pogwiritsa ntchito njira zomangira izi, ma nembanemba a Shandong Hongyue Environmental Protection's EVA oteteza madzi amatha kuwonetsa bwino ubwino wawo waukulu - kuphatikizapo kukana kwambiri hydrolysis, kukana kulowa kwa mizu, komanso moyo wautali wautumiki.
Nthawi yotumizira: Meyi-09-2026
