Swilo swa nkoka leswi khumbaka matirhelo ya casting ya aluminium alloy die castings

Swilo swa nkoka leswi khumbaka matirhelo ya casting ya Aluminium Alloy Ku Famba Ku Fambas

Eka misava hinkwayo aluminium alloy ku fa ku hoxa makete, matirhelo ya casting i xin’wana xa swikombiso swa nkoka ku pima khwalithi ya swikumiwa. Khwalithi ya matirhelo ya casting yi khumba hiku kongoma swivumbeko swa michini, ku pakanisa ka dimensional, khwalithi yale henhla xikan’we na vuhumelerisi bya kahle bya ti die castings.

1. Miehleketo ya xisekelo ya matirhelo ya casting ya aluminium alloy die castings
Matirhelo ya casting ya aluminium alloy die castings ngopfu ngopfu ya katsa fluidity, shrinkage, hot cracking tendency, porosity xikan’we na swivumbeko swa michini. Swihlawulekisi leswi aswi titsheganga ntsena hi ti khemikhali ta xivumbeko xa alloy, kambe na swilo swofana na Endlelo ro Die Casting ti parameters, dizayini ya xivumbeko na khwalithi ya vumaki.

2. Swilo swa nkoka leswi khumbaka matirhelo ya casting ya aluminium alloy die castings
(I) Silikoni (Si) .
Silicon i xiphemu lexikulu xa ti die-casting aluminium alloys totala naswona yina swihlawulekisi leswi landzelaka:
Ku antswisa ku khuluka: Silicon yinga antswisa swinene ku khuluka ka mahiselo yale henhla ya alloy xikan’we naku hunguta ku pfala hi xirhami xikan’we naku hisa ka ku pandzeka ka casting.
Ku antswisa ku tiya ka ku onhaka: Ku engeteriwa ka silicon swinga antswisa ku tiya ka ku onhaka ka alloy naswona swiringanerile eka swiphemu leswi lavaka ku tiya ka le henhla ka ku onhaka.
Ku hunguta ku hunguteka: Ku cinca ka volume ya ti alloys letingana silicon i kutsongo, naswona swa olova ku humesa ti castings handle ko wa na ku pandzeka ka shrinkage.
Nhlayo leyi lawuriwaka: Nhlayo ya silicon hi xitalo yi lawuriwa exikarhi ka 9.6% na 12%. Loko yi tlula 12%, silicon na aluminium swi endla hypereutectic, leswinga endla leswaku kuva na ku vonakala ka swivati ​​swo tiya naswona swi khumba maendlelo yo tsema.
(II) Koporo (Cu) .
Ntirho wa koporo eka swihlanganisi swa aluminiyamu wu katsa:
Ku antswisa matimba na ku tiya: Ku engeteriwa ka copper swinga antswisa swinene matimba ya tensile xikan’we naku tiya ka alloy.
Ku hunguta ku tiya ka corrosion: Ku engeteriwa ka copper swita hunguta ku tiya ka corrosion ya alloy. Hikokwalaho, eka switirhisiwa leswi lavaka ku tiya lokukulu ka corrosion, nhlayo ya copper yifanele ku lawuriwa swinene.
Nhlayo leyi lawuriwaka: Nhlayo ya copper yitala ku lawuriwa exikarhi ka 1.5% na 3.5% kuva yi ringanisela matimba xikan’we naku lwisana na corrosion.
(III) Magnesiyamu (Mg) .
Ntirho wa magnesium eka swihlanganisi swa aluminiyamu wu katsa:
Ku antswisa matimba xikan’we naku tirhisiwa hi muchini: Nhlayo yintsongo ya magnesium (kwalomu ka 0.2%-0.3%) yinga antswisa matimba xikan’we naku tirhisiwa ka muchini wa alloy.
Hot cracking tendency: Magnesium yale henhla swinene yita engetela hot cracking tendency xikan’we naku hunguta matimba na plasticity eka mahiselo yale henhla.
Nhlayo leyi lawuriwaka: Nhlayo ya magnesium hi xitalo ayi hundzi 0.10% ku papalata ku pandzeka loku hisaka xikan’we naku ntshunxeka.
(IV) Zinki (Zn) .
Ntirho wa zinc eka ti aluminium alloys wukatsa:
Ku antswisa ku khuluka ka mati: Zinc yinga antswisa ku khuluka ka alloy xikan’we naku antswisa matirhelo ya casting.
Ku hunguta ku tiya ka corrosion: Ku engeteriwa ka zinc swita hunguta ku tiya ka corrosion ya alloy, hikokwalaho nhlayo ya zinc yifanele ku lawuriwa.
Nhlayo leyi lawuriwaka: Nhlayo ya zinc hi xitalo ayi hundzi 3% ku papalata ku pandzeka loku hisaka xikan’we naku hunguta ku tiya ka corrosion.
(V) Nsimbi (Fe) .
Ntirho wa nsimbi eka swihlanganisi swa aluminiyamu wu katsa:
Ku antswisa matimba na ku tiya: Nhlayo yitsongo ya nsimbi yinga antswisa matimba na ku tiya ka alloy.
Ku hunguta ku namarhela ka mould: Loko nhlayo ya iron yiri 0.6%-1.0%, xiendlakalo xa ku namarhela ka mould xinga hungutiwa, leswi pfunaka eka maendlelo ya die casting.
Nhlayo leyi lawuriwaka: Nhlayo ya iron hi xitalo yi lawuriwa exikarhi ka 0.6%-1.2% ku papalata ku hunguta ku khuluka ka alloy xikan’we naku engetela ntolovelo wa ku pandzeka hi ku hisa.
(VI) Ximangani (Mn) .
Ntirho wa manganese eka ti aluminium alloys wukatsa:
Ku antswisa vuyelo byo biha bya iron: Manganese yinga hunguta xivumbeko xa lamellar kumbe xofana na needle lexi vumbiwaka hi iron xikan’we naku antswisa microstructure ya alloy.
Ku antswisa plasticity xikan’we na matimba ya impact: Ku engeteriwa ka manganese swinga antswisa plasticity xikan’we na matimba ya impact ya alloy.
Nhlayo leyi lawuriwaka: Nhlayo ya manganese hi xitalo ayi hundzi 0.5% ku papalata ku hambanisiwa.
(VII) Nikele (Ni) .
Ntirho wa nickel eka ti aluminium alloys wu katsa:
Nantswisa matimba na ku tiya: Nickel yinga antswisa matimba na ku tiya ka alloy.
Ku hunguta ku bola: Nickel yinga hunguta ku bola ka alloy eka xivumbeko naswona yi engetela vutomi bya xivumbeko.
Nhlayo leyi lawuriwaka: Nhlayo ya nickel hi xitalo yi lawuriwa exikarhi ka 1% na 1.5%.
(VIII) Titaniyamu (Ti) .
Ntirho wa titanium eka ti alloys ta aluminium wu katsa:
Ku antswisiwa ka mavele: Titanium yinga antswisa swinene xivumbeko xa mavele ya ti aluminium alloys xikan’we naku antswisa swivumbeko swa michini swa ti alloys.
Ku hunguta ku hisa ka ku pandzeka: Ku engeteriwa ka titanium swinga hunguta ku hisa ka ku pandzeka ka alloy.
Nhlayo leyi lawuriwaka: Nhlayo ya titanium hi xitalo yi lawuriwa endzeni ka trace range.
(IX) Xitrontiyamu (Sr) .
Ntirho wa strontium eka ti aluminium alloys wu katsa:
Ku cinciwa: Strontium yinga cinca mahanyelo ya intermetallic compound phase, yi antswisa plasticity ya alloy xikan’we na khwalithi ya xitirhisiwa xohetelela.
Ku antswisa swivumbeko swa michini: Ku engeteriwa ka strontium swinga antswisa matimba ya tensile xikan’we naku leha ka alloy.
Nhlayo ya vulawuri: Nhlayo ya strontium hi xitalo yi lawuriwa exikarhi ka 0.015%-0.03%.
(X) Zirkoniyamu (Zr) .
Ntirho wa zirconium eka ti alloys ta aluminium wukatsa:
Ku antswisiwa ka mavele: Zirconium yinga antswisa mavele lawa yanga recrystallized xikan’we naku antswisa swivumbeko swa michini ya alloy.
Ku sivela recrystallization: Zirconium yinga sivela maendlelo ya recrystallization xikan’we naku antswisa matirhelo ya mahiselo yale henhla ya alloy.
Nhlayo ya vulawuri: Nhlayo ya zirconium hi xitalo yi lawuriwa exikarhi ka 0.1%-0.3%.

3. Nkucetelo lowu heleleke wa swiaki
Eka vuhumelerisi bya xiviri, xivumbeko xa ti aluminium alloys i nhlanganelo wa swiaki swotala, leswi tirhisanaka na swin’wana naswona hiku hlanganela swi khumba matirhelo ya casting. Xikombiso, ku hlanganisiwa ka silicon na copper swinga antswisa ku khuluka na matimba ya alloy, kambe nhlayo ya copper yifanele ku lawuriwa ku papalata ku hunguta ku tiya ka corrosion. Hilaha ku fanaka, ku hlanganisiwa ka magnesium na zinc swinga antswisa matimba naku khuluka ka alloy, kambe nhlayo ya magnesium yifanele ku lawuriwa kuva ku papalatiwa ku hisa ka ku pandzeka.

4. Nkucetelo wa endlelo ro hoxa eka ntirho wa swiaki
Ku engetela eka xivumbeko xa alloy, ti parameters ta maendlelo ya casting na tona tina nkucetelo wa nkoka eka matirhelo ya casting. Xikombiso, ti parameters tofana na mahiselo yo chela, ntshikelelo wa injection, rivilo ra injection xikan’we na nkarhi wo khoma swilava ku antswisiwa kuya hi xivumbeko xa alloy. Ti parameters ta maendlelo leti ringaneleke tinga tiyisisa ku tatiwa loku heleleke ka ti castings xikan’we naku hunguta ku tumbuluxiwa ka swihoxo na ti pores.

5. Mahetelelo
Matirhelo ya casting ya aluminium alloy die castings ya khumbeka hi swilo swohambana hambana. Ti elements tofana na silicon, copper, magnesium, zinc, iron, manganese, nickel, titanium, strontium na zirconium tina mbuyelo lowukulu eka matirhelo ya casting endzeni ka swiyenge swohambana hambana swa nhundzu. Loko ku hlawuriwa ti aluminium alloys, swa laveka ku hlawula hindlela leyi twalaka naku lawula leswinga endzeni ka ti elements leti kuya hi swilaveko swokarhi swa matirhiselo xikan’we na swiyimo swa maendlelo kuva ku fikeleriwa matirhelo ya kahle swinene ya casting.