Liphetoho Mehahong ea Mechini ea Mechini e Thibetsoeng Nakong ea Tempering

• Mechini ea tšepe e bonolo ha e se e halefile: Ha e halefile ka tlase ho 200 ° C, matla le thatafalo li ke ke tsa fokotseha haholo, 'me polasetiki le boima li tla lula li sa fetohe. Sena se bakoa ke karohano ea liathomo tsa khabone ntle le pula mochesong ona. Ho matlafatsoa ha tharollo e tiileng hoa bolokoa Ha mocheso o phahama ho feta 300 ° C, thatafalo e fokotseha haholo mme polasetiki ea eketseha. Sena se bakoa ke ho nyamela ha tharollo e tiileng ea tharollo, ho bokella le kholo ea carbides, le ho hlaphoheloa le ho ts'oaroa bocha ha karolo ea α. Ts'ebetso e felletseng e fumanoeng ha e betere ho feta eo kamora ho halefa ha khabone e nyane ka mocheso o tlase.
• Tšepe e phahameng ea khabone ka kakaretso e amohela ho tima ho sa phethahalang, e le hore likarolo tsa khabone ka austenite li ka ba 0.5%. Kamora ho tima, e bonolo mochesong o tlase ho fumana thatafalo e phahameng, 'me palo e kholo ea li-carbide tse qhalakaneng li hlahisoa ho ntlafatsa ho hanyetsa le ho ntlafatsa lithollo tsa austenite. Ha mocheso o phahame ho feta 300 ℃, thatafalo le matla li tla fokotseha ho hlakile, polasetiki e tla eketseha, 'me boima ba tšusumetso bo tla fokotseha ho ea tlase. Lebaka ke hore e boreleli θ carbide e kenella lipakeng tsa mekoallo ea martensite mme e hola ka botlalo, ka tsela eo e fokotsa ho thatafala ha sekhahla, ha α matrix e eketsa polasetiki mme e fokotsa matla ka lebaka la phello e kopaneng ea ho hlaphoheloa le ho ts'oaroa hape. thatafala e tla eketseha hanyane, e leng ka lebaka la pula ea li-carbide tse qhalakantsoeng tsa ε (η), tse bakang ho thatafala ha lilemo.
• Mechini e nang le k'habone e nang le tšepe e mahareng kamora hore e futhumale: Ha tempering e le tlase ho 200 ℃, palo e nyane ea li-carbide e tla oela, phello ea ho thatafatsa ha e ntle, mme thatafalo e ka bolokoa ntle le ho fokotseha. Ha tempering e phahame ho feta 300 ℃, ka mocheso oa thempereichara e ntseng e eketseha, polasetiki ea eketseha, 'me ho thatafala ha fracture KIC ho eketseha haholo. Leha matla a fokotsehile, e ntse e phahame haholo ho feta ea carbon steel low.
• Bohale ba ho thunya: Ha litšepe tse ling li halefile, ha mocheso oa tempele o ntse o eketseha, ho ba thata hoa eona ho a fokotseha. Borekhu bo bakiloeng ke ho teneha bo bitsoa bohale brittleness.
• Ha e halefile ka 300 ° C, thatafalo e fokotseha butle. Ka lehlakoreng le leng, pula e tsoelang pele ea khabone e tla fokotsa ho thatafala; ka lehlakoreng le leng, phetoho ea austenite e bolokiloeng haholoanyane ho martensite ka khabone e phahameng e tla baka ho thatafala. Sena se etsa hore thatafalo e theohe ka bonolo, mme e kanna ea phahama. E ntse e robeha kamora ho halefa.

Ketsahalo ea 200 ~ 350 ℃ e bitsoa mofuta oa pele oa bohale brittleness; ketsahalo ea 450 ~ 650 ℃ e bitsoa mofuta oa bobeli oa bohale bo hlabang.

1. Mofuta oa pele oa bohale bo hlabang ke bohale bo sa fetoheng.

Ha mofuta oa pele oa bohale brittleness o hlaha, o ka felisoa ka ho futhumatsa ho fihlela mocheso o phahameng oa bohale; haeba mocheso o le boemong bona ba mocheso, brittleness e joalo e ke ke ea hlaha. Ka hona, e bitsoa brittleness ea bohale bo sa fetoheng. Li-steels tse ngata, mofuta oa pele oa bohale bo hlabang bo teng. Ha Mo, W, Ti, Al ba le teng ka hara ts'epe, bohale ba Type I bo ka fokola kapa ba hatelloa.

Hajoale, ho na le maikutlo a mangata ka sesosa sa mofuta oa pele oa bohale, mme ha ho na sephetho sa makhaola-khang. Ho bonahala eka e kanna ea ba sephetho se felletseng sa mabaka a mangata, le bakeng sa lisebelisoa tse fapaneng tsa tšepe, hape ho ka etsahala hore e bakoe ke mabaka a fapaneng.

Qalong, ho ipapisitsoe le mocheso oa mofuta oa pele oa bohale bo bileng teng ka nako e le 'ngoe le phetoho ea bobeli ea tšepe ea khabone ha e halefisoa, ke hore, mocheso oa phetoho e bolokiloeng ea austenite, mofuta oa pele oa bohale bo neng bo nkoa e le bolokoa austenite. E bakoang ke phetoho, karolo ea polasetiki ea austenite e tla nyamela ka lebaka la phetoho. Maikutlo ana a ka hlalosa ketsahalo e makatsang ea hore likarolo tse kang Cr le Si li sutumetsa mofuta oa pele oa bohale ho fihlela mocheso o phahameng mme keketseho ea palo e bolokiloeng ea austenite e ka kena mofuteng oa pele oa bohale bo hlabang. Empa bakeng sa mefuta e meng, mofuta oa pele oa bohale brittleness ha o lumellane ka botlalo le phetoho ea austenite e bolokiloeng. Ka hona, khopolo ea phetoho e bolokiloeng ea austenite e sitoa ho hlalosa mofuta oa pele oa bohale ba mefuta e fapaneng.

Kamora moo, khopolo ea phetoho e bolokiloeng ea austenite e ile ea boela ea nkeloa sebaka ke khopolo-taba ea "carbide" e tšesaane. E netefatsoa ke microscope ea elektronike hore ha mofuta oa pele oa bohale bo hlaha, ho theoa khetla e tšesaane ea carbide haufi le moeli oa lijo-thollo. Ho ipapisitsoe le sena, ho lumeloa hore mofuta oa pele oa bohale bo bakoang ke khetla e tšesaane ea carbide. Hoa hlokomeleha hore ho theoa ha mekhahlelo e brittle haufi le meeli ea lijo-thollo ho ka baka ho robeha ha brittle intergranular. Potso ke hore na likhetla tse tšesaane tsa carbide tse bonoang li thehiloe joang.

Joalokaha ho boletsoe pejana, kamora ho tima li-steels tse tlase le tse mahareng, lath martensite le khetla e tšesaane e ts'oaroang joaloka austenite e nang le khabone e ngata e ajoang mellwaneng ea lath e ea fumaneha. Ha tempering e le mocheso o tlase, ke feela karohano ea khabone e hlahang lath martensite e nang le khabone e ka tlase ho 0.2% ntle le pula ea carbides, ha martensite e nang le khabone e fetang 0.2% e kanna ea tšoana ho martensite hasana mme e ka fokotsa metastable carbides ea phetoho.

Ha mocheso oa tempering o feta 200 ° C, li-carbide tse ntle tse nang le nale le tsona li ka kenella ka har'a carbon martensite e tlase. Ka nako e ts'oanang, θ-carbide nuclei e tla theoa moeling oa lath martensite bar ebe e hola e le likarolo tsa θ-carbide. Sebopeho sa θ-carbide ena ha e itšetlehe feela ka ho bola ha li-austenite tse bolokiloeng, empa hape e itšetleha ka ho felisoa ha li-carbide tsa phetoho tse hasantsoeng le li-carbide tse ntle tse kang li-carbide tse kentsoeng martensite. Θ-carbide e bōpehileng joaloka marapo ke carbide e tšesaane e bopehileng joaloka khetla e bonoang tlasa microscope ea elektronike. Ho ka bonoa hore bakeng sa litšepe tse nang le khabone e nang le khabone e ngata e bolokiloeng moeling oa lath, khopolo ea phetoho ea austenite e bolokiloeng e lumellana le khopolo ea khofu e tšesaane ea carbide.

Ha kh'habone e nang le khabone e phahameng e le tlase ka tlase ho 200 ℃, li-carbide tse fetohang habonolo lia qhalakana ebe li kenella ka har'a martensite e makatsang, 'me ha mocheso o futhumetseng o phahame ho feta 200 ℃, marapo a tla its'oara ka mafahla a nang le khabone. Sebopeho χ le θ-carbides. Ka nako e ts'oanang, li-carbide tse seng li tsitsitse li tla qhala bocha. Likhechana tsa χ le θ- carbide tse ajoang ka sebopeho se tšoanang sa mafahla li tla hokahanngoa le maqephe a carbide, ka hona ho robeha ho kanna ha etsahala haufi le sebaka se joalo, se eketsang brittleness ea tšepe. Ha mocheso o futhumatsang o ntse o eketseha, li-carbide tse fokolang li a robeha, li kopane, 'me li hole hore e be li-carbide tse nang le granular, ka hona, brittleness ea fokotseha mme boima ba tšusumetso boa eketseha.

Khopolo ea boraro ke khopolo ea karohano ea moeli oa lijo-thollo. Ka mantsoe a mang, likarolo tsa ho se hloeke P, Sn, Sb, As, jj li tla tsepamisoa moeling oa lijo-thollo nakong ea tumello. Khethollo ea likarolo tse sa hloekang e baka ho fokola ha meeli ea lijo-thollo mme e lebisa ho robeheng hampe. Ho aroloa ha likarolo tse sa hloekang moeling oa lijo-thollo tsa austenite ho netefalitsoe ke Auger electron spectrometer le probe ea ion [43,44]. Mn, Si, Cr, Ni, V e ka khothaletsa khethollo ea likarolo tse sa hloekang moeling oa lijo-thollo tsa austenite, ka hona e ka ts'ehetsa nts'etsopele ea mofuta oa pele oa bohale bo hlabang. Mo, W, Ti, Al e ka thibela khethollo ea likarolo tse sa hloekang moeling oa lijo-thollo tsa austenite, ka hona e ka thibela nts'etsopele ea mofuta oa pele oa bohale bo hlabang.

2. Mofuta oa bobeli oa bohale bo hlabang ke bohale bo fetoloang.

Ka mantsoe a mang, kamora ho koaloa, haeba e ka futhumatsoa ho feta 650 ℃, ebe e pholile kapele ho mocheso oa kamore, ho amoheloa ho ka felisoa. Kamora hore embrittlement e tlosoe, embrittlement e ka hlaha hape, ka hona e bitsoa reversible temper brittleness. Sebopeho sa lik'hemik'hale ke ntho e amang mofuta oa bobeli oa bohale bo hlabang. Ho latela mesebetsi e fapaneng, e arotsoe ka mekhahlelo e meraro:

• (1) Lintho tse sa hloekang P, Sn, Sb, As, B, S;
• (2) Ni, Cr, Mn, Si, C, e khothalletsang mofuta oa bobeli oa bohale bo hlabang;
• (3) Mo, W, V, Ti le likarolo tse sa tloaelehang tsa lefats'e La, Nb, Pr tse thibelang mofuta oa bobeli oa bohale bo hlabang;

Lintho tse sa hloekang li tlameha ho phela hammoho le lintho tse khothalletsang mofuta oa bobeli oa bohale ho baka bohale.

Ka kopo boloka mohloli le aterese ea sengoloa sena hore se hatisoe hape:Liphetoho Mehahong ea Mechini ea Mechini e Thibetsoeng Nakong ea Tempering

Minghe Khamphani ea Die Casting li inehetse ho etsa le ho fana ka boleng bo phahameng le likarolo tse phahameng tsa ho lahla likarolo Thining-Wall Die Casting,Hot Chamber Die lahla,Cold Chamber shoa lahla), Tšebeletso e chitja (Die Casting Service,Cnc Machining,Ho Etsa Mofuta, Bokaholimo Phekolo) .Na tloaelo efe kapa efe ea Aluminium die die cast, magnesium kapa Zamak / zinc die casting le litlhoko tse ling tsa castings lia amoheleha ho ikopanya le rona

Tlas'a taolo ea ISO9001 le TS 16949, lits'ebetso tsohle li etsoa ka mechini e makholo ea li-die casting, mechini e 5-axis le lits'ebeletso tse ling, ho tloha ho li-blasters ho isa mechini ea ho hlatsoa ea Ultra Sonic. sehlopha sa baenjiniere ba nang le boiphihlelo, lisebelisoa le bahlahlobi ho etsa moralo oa moreki o phethahala.

Moetsi oa konteraka oa li-cast cast. Bokhoni bo kenyelletsa likarolo tse batang tsa aluminium die die likarolo tsa 0.15 lbs. ho isa ho li-6 lbs., Ho theha phetoho e potlakileng, le machining. Litšebeletso tse kenyellelitsoeng boleng li kenyelletsa ho bentsa, ho thothomela, ho qhekella, ho phatloha ha lithunya, ho penta, ho roala, ho roala, kopano le lisebelisoa. Lisebelisoa tse sebelisitsoeng le tsona li kenyelletsa lits'epe tse kopantsoeng tse kang 360, 380, 383 le 413.

Zinc e shoa ho lahla thuso ea moralo / lits'ebeletso tsa boenjineri tse tšoanang. Moetsi oa moetlo oa li-castings tsa zinc tse nepahetseng. Li-castings tse nyane, li-castings tse phahameng tsa khatello, li-cast cast tsa hlobo, li-castings tse tloaelehileng tsa hlobo, li-unit tsa die le li-cast cast tse ikemetseng le li-cast cast tse tiisitsoeng li ka etsoa. Li-castings li ka etsoa ka bolelele le bophara ho fihlela 24 ho. Ho +/- 0.0005 ho. Mamello.  

ISO 9001: Moetsi ea netefalitsoeng oa 2015 oa magnesium ea die die, Bokhoni bo kenyelletsa khatello e phahameng ea khatello ea magnesium die cast to 200 ton room & 3000 kamoreng e batang, moralo oa lithulusi, polishing, molding, machining, powder & liquid paint, QA e felletseng e nang le bokhoni ba CMM , kopano, ho paka le ho tsamaisa.

ITAF16949 e netefalitsoe. Ts'ebeletso e 'ngoe ea ho lahla e kenyeletsa ho lahla lichelete,ho lahla lehlabathe,Matla a khoheli, Lahlehileng bubble lahla,Ho ts'oaroa ha Centrifugal,lephaka lahla,Sa Feleng hlobo lahlaBokhoni bo kenyelletsa EDI, thuso ea boenjiniere, ho etsa mohlala o tiileng le ho sebetsoa ka bobeli.

Lahla Liindasteri Liphuputso tsa likarolo tsa likarolo tsa: Likoloi, libaesekele, lifofane, liletsa tsa 'mino, sesepa sa metsi, lisebelisoa tsa Optical, li-sensor, mehlala, lisebelisoa tsa elektroniki, masaka, lioache, mechini, lienjine, thepa ea ka tlung, mabenyane, mabenyane, telecom, mabone, lisebelisoa tsa bongaka, lisebelisoa tsa litšoantšo, Liroboto, Litšoantšo tse betliloeng, Lisebelisoa tsa molumo, Lisebelisoa tsa lipapali, Lithulusi, Lipapali le tse ling. 

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