Phekolo ea mocheso oa Fastener, ntle le tlhahlobo le taolo ea boleng bo akaretsang, ho na le tlhahlobo le taolo e khethehileng ea boleng, joale re re kalafo ea mocheso ea lintlha tse 'maloa tsa taolo.
01 Decarburization le carburization
E le ho tseba ka nako e nepahetseng taolo ea khabone ea sebopi, o ka sebelisa tlhahlobo ea spark le tlhahlobo ea boima ba Rockwell bakeng sa decarburization le carburization bakeng sa kahlolo ea pele.
Tlhahlobo ea Spark.
Na likarolo tse tingoeng, ka grinder ho tloha holimo le ka hare ka bonolo sila tlhase e kahlolo holim'a 'me pelo ea palo ea carbon e tsitsitse. Empa sena se hloka hore mosebeletsi a be le mekhoa e metle le litlhase ho tseba bokhoni.
Tlhahlobo ea boima ba Rockwell.
E etsoa ka lehlakoreng la hexagonal bolt. Taba ea pele, likarolo tse thata tsa sefofane sa hexagonal se nang le sandpaper e bentšitsoeng ka bonolo, li ne li lekanya ho thatafala ha Rockwell ea pele. Ebe sebaka sena sa sander ho sila hole hoo e ka bang 0.5mm, ebe o lekanya ho thatafala ha Rockwell.
Haeba boima ba boleng ba makhetlo a mabeli ha e le hantle ke ntho e tšoanang, hore leha e le decarburization, kapa carburization.
Ha boima ba pele bo le tlase ho feta boima ba ho qetela, ho bolela hore bokaholimo bo entsoe ka decarburized.
Ea pele e thata e phahame ho feta ho thatafala ho qetela, hore holim'a carburization.
Ka kakaretso, phapang e 'meli ea boima ba 5HRC kapa ka tlase, ka mokhoa oa metallographic kapa microhardness mokhoa, likarolo tsa decarburization kapa carburization ha e le hantle li ka har'a sebaka sa thuto.
02 Ho thatafala le matla
Ka threaded fastener teko, e ke ke ea feela e thehiloeng boima boima boleng ba buka e amehang, fetoloa boleng ba matla. Ho na le ntho e thatafatsang bohareng.
Ka kakaretso, ho thatafala ha thepa ho molemo, ho thatafala ha karolo ea sefapano sa karolo ea screw e ka ajoa ka mokhoa o ts'oanang, hafeela boima bo tšoaneleha, matla le ho netefatsa hore khatello ea kelello e ka boela ea finyella litlhoko;
Ha boima ba thepa bo futsanehile, le hoja ho ea ka karolo e behiloeng ea cheke, ho thatafala hoa tšoaneleha, empa matla le tiisetso khatello ea kelello hangata ha e finyelle litlhoko. Haholo-holo ha boima ba holim'a metsi bo atisa ho ea moeling o ka tlaase, e le ho laola matla le ho tiisa khatello ea kelello ka har'a mefuta e mengata e tšoanelehang, hangata e ntlafatsa boleng bo tlaase ba moeli oa boima.
03 Teko ea ho hema
Retempering teko ka hlahloba quenching thatafala ha hoa lekana, le tlaase haholo mocheso tempering ho ka thata fihla boletsweng thatathata mefuta e fapaneng ya tshebetso e fosahetseng, ho etsa bonnete ba hore akaretsang thepa ea mechine ea likarolo.
Haholo-holo li-fasteners tse entsoeng ka tšepe tse tlaase tsa carbon martensitic, mocheso o tlaase, le hoja lisebelisoa tse ling tsa mochine li ka finyella litlhoko, empa tekanyo ea khatello e tiisitsoeng, phetoho e setseng ea elongation e kholo haholo, e kholo haholo ho feta 12.5um, 'me maemong a mang a tšebeliso. e tla ba ketsahalo ea tšohanyetso ea ho robeha, likoloing tse ling le kaho ea liboutu, e hlahile ketsahalong ea ho robeha ka tšohanyetso.
Ha mocheso o tlaase ka ho fetisisa oa mocheso o ka fokotsa ts'ebetso e ka holimo, empa ka lihlahisoa tse tlaase tsa carbon martensitic li-bolts tsa sehlopha sa 10,9, li lokela ho ba hlokolosi haholo.
04 Ho hlahlojoa ha hydrogen embrittlement
Ho ba le ts'oaetso ea hydrogen embrittlement ho eketseha ka matla a fastener. Li-fasteners tse entsoeng ka khoele tsa ka ntle tsa sehlopha sa 10.9 ho ea holimo, li-screws tse thatafalitsoeng holim'a metsi, li-screws tse nang le li-washer tse thata tse thata, joalo-joalo li lokela ho tlosoa ha haedrojene ka mor'a ho pola.
Kalafo ea dehydrogenation hangata e ka ontong kapa seboping se futhumatsang, e tšoarellang ho 190 ~ 230.℃nako e fetang 4h, e le hore hydrogen diffusion e tsoe.
"Tšepe e ntse e hloka boima ba eona!" Ho sa tsotellehe hore na boemo ba 'maraka bo fetoha joang, ho hloekisa mokhoa oa ho etsa lihlahisoa hape ke e' ngoe ea mekhoa e sebetsang ea ho hanela likotsi.
Ts'ebetsong ea kalafo ea mocheso oa fasteners, ha ho pelaelo hore ho bohlokoa haholo ho etsa mosebetsi o motle lintlheng tsa bohlokoa tsa taolo, e leng e 'ngoe ea lintho tseo khoebo e' ngoe le e 'ngoe e ntle ea ho futhumatsa mocheso e lokelang ho e etsa hantle.
Nako ea poso: Jan-17-2024