Litsamaisong tsa liphaephe tsa khatello ea tšepe e ductile, li-fasteners (tse kang li-bolt, linate le li-gasket), le hoja li le nyane, ke likarolo tsa bohlokoa bakeng sa ho netefatsa ho tiea, botšepehi ba sebopeho, le ts'ebetso e sireletsehileng ea likhokahano tsa liphaephe. EN4016, “Liphaephe tsa tšepe tse ductile, li-fittings, le lisebelisoa – Phepelo ea metsi a nooang – Litlhoko le mekhoa ea liteko,” e beha litlhoko tse hlakileng tsa tekheniki bakeng sa li-fasteners tse sebelisoang liphaepheng tse joalo. Sengoloa sena se fana ka tlhaiso-leseling ea motheo mabapi le li-fasteners tse thehiloeng ho latela maemo ana.
Tekanyetso ea EN4016 ha e akaretse feelaliphaephe tsa tšepe tse ductilele di-fitting ka botsona, empa hape e totobatsa ka ho hlaka tshebetso, thepa, le tshireletso ya mafome ya ditsamaiso tsa di-fastener tse sebediswang ho di hokela (ho kenyeletswa le dibolte, dinate, le di-washer). Ho kgetha le ho sebedisa di-fastener tse latelang maemo ana ke ntho ya bohlokwa ho netefatsa ho latela melao le polokeho ya sistimi yohle ya diphaephe.
Litlhoko tsa Motheo bakeng sa Li-Fasteners
Ho ya ka EN4016, difaene tse sebediswang diphaepheng tsa tshepe tse ductile (haholoholo tse sebediswang bakeng sa phepelo ya metsi a nowang) di tlameha ho fihlella ditlhoko tse latelang tsa motheo:
1. Thepa le Mekhaniki
- Liboutu: ka kakaretso li lokela ho etsoa ka thepa e nang le matla le ho tiea ho lekaneng, joalo ka tšepe ea khabone kapa tšepe ea alloy. Boemo ba tsona ba mechini bo lokela ho ba bonyane 8.8 (e bontšang matla a tloaelehileng a ho thaepa a 800 MPa le karolelano ea matla a tlhahiso ea 0.8). Bakeng sa lits'ebetso tse phahameng tsa khatello, liboutu tse nang le matla a 10.9 kapa ho feta li ka hlokahala.
- Linate: li lokela ho lekana le boleng ba bolt, hangata li sebelisa linate tsa sehlopha sa 8 kapa sa 10, ho netefatsa khokahano e tsitsitseng le ho thibela ho hlobola khoele.
- Ho kgona ho lokisa: e lokela ho ba le bokgoni bo botle ba ho lokisa le ho lokisa machina ho netefatsa hore ha ho na diphoso tsa ka hare.
2. Likhoelee lokela ho latela maemo a khoele ea ISO metric (mohlala, ISO68-1, ISO261),e be e hloekileng, e felletseng, 'me e se na li-burrs, mapetso le liphoso tse ling ho netefatsa hore bolt le nate lia kopana hantle.
3. Litekanyo le Mamelloe tlameha ho latela litlhoko tsa mamello tse boletsoeng litšoantšong tsa moralo le litekanyetso tse amehang (joalo ka EN ISO 4014 le EN ISO 4032) ho netefatsa hore hoa fapanyetsana le ho tsitsisa ha kopano.
Kahobane liphaephe tsa tšepe tse ductile hangata li sebelisoa ka tlas'a lefatše kapa libakeng tse mongobo, 'me kahobane li tsamaisa metsi a nooang, khanyetso ea mafome ea li-fasteners e phahame haholo. EN4016 e na le melaoana e thata mabapi le sena:
1. Kotsi ea ho Silafala
Difaene tsa tshepe ya khabone di kotsing e kgolo ya ho bola ha dikhemikhale tsa motlakase dibakeng tse mongobo. Ho bola ho matla ho ka lebisa ho robeheng ha diboutu, ho dutla ha manonyeletso, esita le ho hloleha ha tsamaiso ya diphaephe.
Bakeng sa ho kopana le metsi a nooang, lesela le thibelang ho bola le lokela ho se be le chefo, le se nang monko, le se ame boleng ba metsi.
2. Liaparo tse Khahlanong le ho Senyeha tse Khothaletsoang,EN 4016 e khothaletsa mekhoa e latelang ea kalafo ea ho thibela ts'enyeho bakeng sa libaka tsa metsi a nooang:
Ho kenya galvanizing ka ho chesa (HDG): Ena ke mokhoa o tloaelehileng haholo le o sebetsang oa tšireletso. Kamora ho e phutholla le ho e phaphamala, li-fasteners li qoelisoa ka har'a zinki e qhibilihisitsoeng ho etsa lera le teteaneng la alloy ea zinki le lera le hloekileng la zinki.
Tlhokahalo: Botenya ba lera la galvanized bo tlameha ho fihlela maemo a amehang (joalo ka ISO 10684), hangata bo hloka botenya bo tloaelehileng ba bonyane 50μm ho netefatsa tšireletso ea nako e telele ea mafome. Sekoahelo sa Dacromet/Zinc-Chromium: Theknoloji ea sekoahelo se sa keneng mafome se sa keneng haeterojene, se entsoeng ka ho sebelisa slurry e entsoeng ka phofo ea zinki, phofo ea aluminium le chromic acid ebe e e baka mochesong o phahameng.
Melemo: Ho hanyetsa mafome hantle haholo (hangata ho feta ho tjhesa ka ho qoelisa ka ho chesang ha botenya bo lekanang), ha ho kotsi ya ho qhibiliha ha haeterojene, le ho kwahela ka ho tshwana.
E lumellana ka botlalo le litlhoko tsa bohloeki bakeng sa thepa e amanang le metsi a nooang.
Ho Koahela ka Epoxy: Filimi e sireletsang e nang le resin e matla ea epoxy e sebelisoa holim'a sehokelo ho sebelisoa mekhoa e kang ho fafatsa ka motlakase.
Melemo: Ho hanyetsa lik'hemik'hale hantle haholo le ponahalo e ntle ka botle. Leha ho le joalo, lesela le lokela ho ba le sa senyehang ebile le se na tšenyo, kaha sena se ka baka mafome.
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Nako ea poso: Loetse-19-2025
