Joang ho khetha fastening e nepahetseng? Ke li-parameter life tsa bohlokoa tseo u hlokang ho li tseba?
Ha ho tluoa tabeng ea ho khetha fastening e nepahetseng bakeng sa morero oa hau, ho na le lintlha tse 'maloa tsa bohlokoa tse lokelang ho nahanoa. Ho tloha ho litekanyetso tsa sehlahisoa le litlhaloso ho ea ho lisebelisoa, limaraka tsa matla, le kalafo ea bokaholimo, ntho e 'ngoe le e 'ngoe e bapala karolo ea bohlokoa ho khethollang ts'ebetso le ts'epahalo ea fastening. Sengoliloeng sena, re tla shebana le lintlha tse tebileng tsa ho khetha seqhoala se nepahetseng, ho fana ka lintlha tsa setsebi ho u thusa ho etsa liqeto u na le tsebo.
Maemo a Sehlahisoa le Litlhaloso
Mohato oa pele oa ho khetha fastening e nepahetseng ke ho utloisisa litekanyetso tsa sehlahisoa le litlhaloso tseo se sebelisetsoang tsona. Bakeng sa li-fasteners tse latelang litekanyetso tse khethehileng, tse kang DIN912 (li-hexagon socket head screws), nomoro e tloaelehileng e tšoailoeng e ka bonahatsa ka nepo moralo le ts'ebetso ea tsona. Ha ho se na litekanyetso tse hlakileng, likarolo tse sa tloaelehang (likarolo tse sa tloaelehang) li hloka litšoantšo tse qaqileng ho bontša boholo ba tsona le sebōpeho sa tsona. Lefatšeng ka bophara, Setsi sa Maemo a Jeremane (DIN), The International Organisation for Standardization (ISO), maemo a naha a China (GB), American National Standards Institute (ANSI) le Maemo a Maemo a Liindasteri a Japane (JIS) kaofela ke litsamaiso tse tloaelehileng tse nang le tšusumetso e ngata.
Litlhaloso tsa Fastener hangata li na le likarolo tse peli: bophara ba khoele le bolelele ba sekoti. Metric le INCH ke litsamaiso tse peli tse ka sehloohong tsa litlhaloso. Li-screws tsa metric tse kang M4-0.7x8, moo M4 e emelang khoele e bophara ba 4mm, 0.7 ke sekontiri, 'me 8 ke bolelele ba sekoti. INCH Screws joalo ka 6#-32*3/8, moo 6# e emelang khoele bophara ba bokantle, 32 e emetse palo ea likhoele ka inch ea bolelele ba khoele, le 3/8 ke bolelele ba sekoti.
Lisebelisoa
Lisebelisoa tsa li-fasteners li khetholla matla a tsona, ho hanyetsa kutu le bophelo ba tšebeletso. Lisebelisoa tse tloaelehileng li kenyelletsa tšepe ea carbon, tšepe e sa hloekang, tšepe e sa hloekang, koporo, aluminium, joalo-joalo. Tšepe ea carbon e ka aroloa ka tšepe e tlaase ea carbon, carbon steel, carbon steel le alloy steel, joalo ka SCM435, 10B21, joalo-joalo. Lintlha tse kang corrosion resistance, matla le ho mamella mocheso li lokela ho hlahlojoa ka hloko ha u khetha thepa ea fastening ea hau ho netefatsa hore e khona ho mamella maemo a reriloeng.
Mephato ya Matla
Haholo-holo bakeng sa li-fasteners tsa carbon steel, hangata li arotsoe ka lihlopha tse fapaneng tsa matla ho latela matla a tsona a tsitsitseng le matla a ho hlahisa. Ho utloisisa limaraka tsa matla ke habohlokoa bakeng sa ho netefatsa hore fastening e khona ho mamella meroalo e hlokahalang ntle le ho hlōleha. Limaraka tse tloaelehileng li kenyelletsa 4.8, 5.8, 6.8, 8.8, 10.9, 12.9, joalo-joalo Li-screws tse matla tse kang lihlahisoa tse ka holimo ho 8.8 hangata li hloka ho halefa le ho phekoloa mocheso ho ntlafatsa thepa ea tsona ea mechine.
Phekolo ea Bokaholimo
Kalafo ea holim'a metsi ke haholo-holo ho eketsa khanyetso ea kutu le botle ba li-fasteners. Mekhoa e tloaelehileng ea phekolo e kenyelletsa ho etsa blackening, galvanizing (e kang blue-white zinki plating, white zinki plating, joalo-joalo), koporo plating, nickel plating, chrome plating, joalo-joalo Ho na le likarolo tse sireletsang tikoloho le tse se nang botsoalle tikolohong, 'me botenya ba ho roala bo tla ama sephetho sa tlhahlobo ea letsoai. Ho khetha mokhoa o nepahetseng oa kalafo ea holim'a metsi ho latela tikoloho ea ts'ebeliso le litlhoko ho ka lelefatsa bophelo ba ts'ebeletso ea li-fasteners.
Ka bokhuts'oanyane, ha u khetha li-fasteners, lintlha tse kang maemo a sehlahisoa, litlhaloso, lisebelisoa, maemo a matla, le kalafo ea bokaholimo li hloka ho nahanoa ka botlalo ho netefatsa hore li fihlela litlhoko tsa ts'ebeliso, 'me li na le ts'ebetso e ntle le bophelo bo bolelele.