Lumikizanani nafe pamtengo wokwanira!
Mfundo Zazikulu Zokhudza Weld Quality
Pambuyo kuwotcherera, chosanjikiza choyambirira cha malata pa msoko wa weld chimachotsedwa kwathunthu, ndikusiya chitsulo choyambira chokha.
Choncho, iyenera kuphimbidwa ndi zokutira zokhala ndi mamolekyu apamwamba kwambiri kuti ziteteze dzimbiri kuti zisakhumane pakati pa chitsulo ndi zomwe zili mkati mwake komanso kuti zisawonongeke chifukwa cha dzimbiri.
1. Mitundu ya zokutira
Kukonza zokutira kungagawidwe mu zokutira zamadzimadzi ndi zokutira za ufa. Mtundu uliwonse uli ndi mawonekedwe ake chifukwa cha kusiyana kwa kapangidwe kake, kagwiritsidwe ntchito, ndi njira zochiritsa.
1. Zopaka zamadzimadzi
Izi zikuphatikizapo epoxy phenolic, acrylic, polyester, organosol, ndi zokutira za pigmented, zoyenera kukonza msoko muzakudya zambiri ndi zakumwa.
▶ Zovala za Epoxy Phenolic: Zimakhala ndi ma micropores ochepa, osakanizidwa ndi mankhwala komanso osatseketsa, koma zimafunika kutentha kwambiri. Kuphika kosakwanira kumabweretsa kuchiritsa kosakwanira, zomwe zimapangitsa kuti zokutira zizikhala zoyera pambuyo pochotsa, zomwe zimakhudza magwiridwe antchito ndi chitetezo cha chakudya. Kuphika mopitirira muyeso kumachepetsa kusinthasintha ndi kumamatira, kumapangitsa kuti zokutira zikhale zolimba komanso zosavuta kusweka.
▶ Zopaka za Acrylic ndi Polyester: Amapereka kumamatira kwabwino kwambiri, kusinthasintha, kukana mankhwala, komanso kukana kutsekereza. Komabe, zokutira za acrylic zimatha kuyamwa mitundu yazakudya ndipo zimatha kukana dzimbiri la sulfide.
▶ Zopaka za Organosol: Zodziwika ndi zolimba kwambiri, zomwe zimapanga zokutira zokhuthala pamizere yowotcherera popanda thovu, zosinthika komanso zosinthika. Amafuna kutentha pang'ono pophika kusiyana ndi zokutira zina koma amakhala ndi vuto lolowa m'malo ndipo amatha kuwonongeka ndi sulfide, zomwe zimawapangitsa kukhala osayenerera zakudya zokhala ndi sulfure.
▶ Zopaka utoto: Amapangidwa powonjezera titanium dioxide kapena aluminiyamu ufa ku organosol, epoxy, kapena polyester zokutira kuti zitseke madontho a dzimbiri pansi pa filimuyo, oyenera kukonza msoko m'zitini ngati nyama yachakudya.
2. Zopaka Powder
Zovala zaufa zimapanga mafilimu okhuthala, athunthu, omwe amapereka chitetezo chabwino kwambiri cha ma weld seams. Alibe mpweya wosungunulira panthawi yokonza, kuchepetsa kuipitsidwa kwa chilengedwe, ndipo amagwiritsidwa ntchito kwambiri muzakudya ndi zakumwa zakumwa zokhala ndi zofunikira zowonongeka zowonongeka.Zovala zaufa zimagawidwa kukhala mitundu ya thermoplastic ndi thermosetting.
▶ Zovala za Thermoplastic: Zopangidwa makamaka ndi polyester powder, titaniyamu dioxide, barium sulfate, ndi zina zotero. Zovala izi zimasinthasintha kwambiri ndipo zimapirira njira zosiyanasiyana zamakina koma zimakhala zosakanizika ndi mankhwala kuposa zokutira za thermosetting, zomwe zimatenga mitundu yazakudya mosavuta. Kumamatira kwawo ku zokutira m'munsi kumakhala kochepa kusiyana ndi msoko wa weld, zomwe zimapangitsa kuti pakhale mawonekedwe a mlatho.
▶ Zovala za Thermosetting: Zomwe zimapangidwa ndi epoxy/polyester, zimachiza kukhala mamolekyu apamwamba kwambiri kudzera mu polymerization pambuyo potenthetsa, kupanga mafilimu owonda kwambiri kuposa zokutira za thermoplastic zokhala ndi mphamvu zolimbana ndi mankhwala koma zocheperako.
Kukonza zokutira kungagawidwe mu zokutira zamadzimadzi ndi zokutira za ufa. Mtundu uliwonse uli ndi mawonekedwe ake chifukwa cha kusiyana kwa kapangidwe kake, kagwiritsidwe ntchito, ndi njira zochiritsa.
1. Zopaka zamadzimadzi
Izi zikuphatikizapo epoxy phenolic, acrylic, polyester, organosol, ndi zokutira za pigmented, zoyenera kukonza msoko muzakudya zambiri ndi zakumwa.
▶ Zovala za Epoxy Phenolic: Zimakhala ndi ma micropores ochepa, osakanizidwa ndi mankhwala komanso osatseketsa, koma zimafunika kutentha kwambiri. Kuphika kosakwanira kumabweretsa kuchiritsa kosakwanira, zomwe zimapangitsa kuti zokutira zizikhala zoyera pambuyo pochotsa, zomwe zimakhudza magwiridwe antchito ndi chitetezo cha chakudya. Kuphika mopitirira muyeso kumachepetsa kusinthasintha ndi kumamatira, kumapangitsa kuti zokutira zikhale zolimba komanso zosavuta kusweka.
▶ Zopaka za Acrylic ndi Polyester: Amapereka kumamatira kwabwino kwambiri, kusinthasintha, kukana mankhwala, komanso kukana kutsekereza. Komabe, zokutira za acrylic zimatha kuyamwa mitundu yazakudya ndipo zimatha kukana dzimbiri la sulfide.
▶ Zopaka za Organosol: Zodziwika ndi zolimba kwambiri, zomwe zimapanga zokutira zokhuthala pamizere yowotcherera popanda thovu, zosinthika komanso zosinthika. Amafuna kutentha pang'ono pophika kusiyana ndi zokutira zina koma amakhala ndi vuto lolowa m'malo ndipo amatha kuwonongeka ndi sulfide, zomwe zimawapangitsa kukhala osayenerera zakudya zokhala ndi sulfure.
▶ Zopaka utoto: Amapangidwa powonjezera titanium dioxide kapena aluminiyamu ufa ku organosol, epoxy, kapena polyester zokutira kuti zitseke madontho a dzimbiri pansi pa filimuyo, oyenera kukonza msoko m'zitini ngati nyama yachakudya.
2. Zopaka Powder
Zovala zaufa zimapanga mafilimu okhuthala, athunthu, omwe amapereka chitetezo chabwino kwambiri cha ma weld seams. Alibe mpweya wosungunulira panthawi yokonza, kuchepetsa kuipitsidwa kwa chilengedwe, ndipo amagwiritsidwa ntchito kwambiri muzakudya ndi zakumwa zakumwa zokhala ndi zofunikira zowonongeka zowonongeka.Zovala zaufa zimagawidwa kukhala mitundu ya thermoplastic ndi thermosetting.
▶ Zovala za Thermoplastic: Zopangidwa makamaka ndi polyester powder, titaniyamu dioxide, barium sulfate, ndi zina zotero. Zovala izi zimasinthasintha kwambiri ndipo zimapirira njira zosiyanasiyana zamakina koma zimakhala zosakanizika ndi mankhwala kuposa zokutira za thermosetting, zomwe zimatenga mitundu yazakudya mosavuta. Kumamatira kwawo ku zokutira m'munsi kumakhala kochepa kusiyana ndi msoko wa weld, zomwe zimapangitsa kuti pakhale mawonekedwe a mlatho.
▶ Zovala za Thermosetting: Zomwe zimapangidwa ndi epoxy/polyester, zimachiza kukhala mamolekyu apamwamba kwambiri kudzera mu polymerization pambuyo potenthetsa, kupanga mafilimu owonda kwambiri kuposa zokutira za thermoplastic zokhala ndi mphamvu zolimbana ndi mankhwala koma zocheperako.
2. Kupaka makulidwe
3. Umphumphu wa Kuphimba
1. Weld Quality
Kukhulupirika kwa zokutira zokonza zamadzimadzi kumadalira kwambiri mawonekedwe a geometric a msoko wa weld. Ngati msoko wowotcherera uli ndi ma spatter point, extrusion yayikulu, kapena pamwamba pake, zokutira zamadzimadzi sizingathe kuziphimba. Kuonjezera apo, makulidwe a weld seam amakhudza ❖ kuyanika; zambiri, makulidwe kuwotcherera msoko ayenera kukhala zosakwana 1.5 nthawi mbale makulidwe. Pachitsulo chachiwiri chozizira chozizira kapena chitsulo cholimba kwambiri, makulidwe a seam weld ndi 1.5 mpaka 1.8 kuchulukitsa mbale.
Ma weld seams opangidwa popanda chitetezo cha nayitrogeni amatha kukhala ndi kusamata bwino kwa zokutira zokonzekera chifukwa cha zigawo zochulukirapo za okusayidi, zomwe zimatsogolera ku ming'alu yotchinga pakatsatira njira zotsatsira monga kupendekera, khosi, ndi mikanda, zomwe zimakhudza kukhulupirika kwa zokutira zokonzanso.
Zovala zaufa, chifukwa cha makulidwe ake okwanira, zimatha kuthana bwino ndi zovuta zowonetsera zitsulo zomwe zimayambitsidwa ndi vuto la weld, kupereka chitetezo chabwino kwambiri chamsoko wowotcherera.
2. Mibulu
Zosamveka zosungunulira zosungunulira mu zokutira zokonza madzi zingakhudze kukhulupirika kwa zokutira. Pamene zokutira zamadzimadzi zimakhala ndi zosungunulira zotsika kwambiri zowira, kapena ngati kutentha kumakwera mofulumira kwambiri panthawi yophika, kapena ngati kutentha kwa weld msoko ndipamwamba kwambiri, zosungunulira zambiri zimasanduka nthunzi panthawi yophika, ndikusiya zingwe za thovu kapena ma micropores mu zokutira, kuchepetsa kuphimba ndi chitetezo pa msoko wowotcherera.
4. Kuphika ndi Kuchiritsa
1. Kuchiritsa Njira Yokonzera Zopaka
Kuphika ndi kuchiritsa kwa zokutira zamadzimadzi kumatha kugawidwa m'magawo otsatirawa: ❖ kuyanika koyamba ndikunyowetsa msoko wowotcherera ndi malo opanda kanthu (pafupifupi masekondi 1-2), ndikutsatiridwa ndi nthunzi yosungunulira kupanga gel osakaniza (ayenera kumalizidwa mkati mwa masekondi 3-5; apo ayi, ❖ kuyanika kumayenda kutali ndi msoko wowotcherera), ndipo pomaliza ndi polymerization. Chophimbacho chiyenera kulandira kutentha kokwanira, komwe kumakhudza kwambiri makulidwe ndi ntchito ya kukonzanso kukonza. Monga tanenera kale, kutentha kwachangu panthawi yophika kumatha kutulutsa thovu, pomwe kukwera pang'onopang'ono kungayambitse kusachiritsika kokwanira chifukwa cha kutentha kwakanthawi kochepa.
Zopaka zosiyanasiyana zimakhala ndi nthawi yosiyana kwambiri panthawi yophika; zokutira za epoxy phenolic zimafuna nthawi yayitali kuposa zokutira za organosol, kutanthauza kuti zimafunikira kutentha kwambiri pophika.
Pa zokutira za ufa, zokutira za thermoplastic zimangosungunuka kupanga filimu panthawi yophika popanda polymerization, pamene zokutira za thermosetting zimapita ku polymerization pambuyo pa pre-polymerization ndikusungunuka mpaka kuphatikizika muzinthu zazikulu zama cell. Choncho, kutentha kophika kumagwirizana kwambiri ndi ntchito yopangira kukonza.
2. Zokhudza Kuchiritsa Digiri pa Coating Performance
Kukonza zokutira kumangowonetsa mikhalidwe yawo ikaphikidwa kwathunthu ndikuchiritsidwa. Kuphika kosakwanira kumabweretsa ma micropores ambiri komanso kusayenda bwino; mwachitsanzo, zokutira za ufa wosakwanira wophikidwa ndi thermoplastic zimatha kukwinya panthawi yoyaka. Kuphika kwambiri kumakhudza kumamatira; mwachitsanzo, zokutira za epoxy phenolic zochulukirapo zimakhala zofewa komanso sachedwa kusweka panthawi yopindika, khosi, ndi mikanda. Kuonjezera apo, kuziziritsa kokwanira pambuyo pophika n'kofunika kwambiri pa ntchito yokonza. Mwachitsanzo, ngati zokutira za ufa wa thermoplastic sizimazizidwa msanga kutentha kwa chipinda pambuyo pophika, zokutira zimatha kusweka poyaka. Kuonjezera chipangizo choziziritsa mu uvuni pambuyo pa ng'anjo kungalepheretse kusweka kwa zokutira zokonza panthawi ya flanging.
Mwachidule, kuonetsetsa kuti zokutira zokonzekera bwino - mwachitsanzo, kutsika pang'ono komanso kusinthika kwabwino - ndikofunikira kuwongolera makulidwe ndi kuchiritsa kwa zokutira.
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Nthawi yotumiza: Jul-16-2025