Diecast zinc alloy

Khoom Paub meej

Zinc alloy tuag casting yog hais txog cua sov aluminium alloy mus rau lub xeev ua kua thiab tom qab ntawd txhaj nws mus rau hauv pwm nyob rau hauv siab siab los tsim aluminium alloy tuag castings. Zinc alloy tuag-casting qhov chaw muaj cov yam ntxwv ntawm siab precision, siab zog, thiab siab nto tiav, thiab tuaj yeem siv dav hauv electronics, tsheb, teeb pom kev zoo thiab lwm yam.

Taw qhia rau cov khoom lag luam ntawm zinc alloy tuag castings

1. Cov khoom siv hluav taws xob hauv tsev: Nrog kev txhim kho ntawm kev tshawb fawb thiab thev naus laus zis, kev thov rau cov khoom siv hluav taws xob txuas ntxiv nce ntxiv. Raws li cov khoom siv nrog kev txhim khu kev qha, kev tiv thaiv corrosion, kev ua haujlwm yooj yim, zoo nkauj thiab kev ua haujlwm zoo, zinc alloy tuag castings tau maj mam siv rau hauv cov khoom siv hluav taws xob, xws li xov tooj ntawm tes, TVs, khoos phis tawj thiab lwm yam khoom siv.
2. Tsheb qhov chaw: Zinc alloy tuag-casting qhov chaw yog siv dav hauv kev lag luam tsheb. Nws qhov zoo dua yog tias nws tuaj yeem tsim cov khoom muaj zog thiab lub teeb yuag, xws li cov twj tso kua mis dej thiab cov lauj kaub roj hauv thaj chaw tsheb cav.
3. Teeb accessories: Zinc alloy tuag-casting qhov chaw yog siv dav hauv kev lag luam teeb pom kev zoo. Cov khoom siv lub teeb tsim muaj qhov ruaj khov zoo, qhov siab du thiab zoo corrosion kuj, yog li lawv tau dhau los ua thawj qhov kev xaiv ntawm lub teeb manufacturers.

Cov yam ntxwv ntawm zinc alloy tuag casting khoom

1. High precision: Lub siab precision ntawm cov pwm tuaj yeem ua kom ntseeg tau tias cov khoom tsim tau muaj qhov tseeb qhov tseeb thiab rov ua haujlwm zoo, uas pab txhawb kev tsim khoom ntau thiab tswj kom zoo.
2. Lub zog siab: Ua los ntawm zinc alloy cov khoom siv rau kev tuag-casting, cov khoom muaj lub zog siab, tensile lub zog, compression tsis kam thiab lwm yam ntxwv ntawm lub cev, thiab ruaj khov.
3. Siab ntag ntom ntom ntom thiab zoo fluens thiab zoo fluens ntawm zinc alloy cov ntaub ntawv, zinc alloy tuag lub teeb ua kom siab tiav thiab muaj zog kev ntxhib los mos.
4. Zoo machinability: Zinc alloy tuag castings yog ib qho yooj yim rau zeb, laum, txiav thiab lwm yam machining.

Nyob rau hauv luv luv, zinc alloy tuag castings yog dav nyiam los ntawm kev ua lag luam rau lawv ntau daim ntawv thov teb thiab ntau yam ntxwv. Nyob rau hauv lub neej yav tom ntej, ntau cov khoom yuav koom nrog cov qib ntawm zinc alloy tuag castings.

Cov yam ntxwv ntawm zinc alloy

1. Lub ntiajteb txawj nqus tshwj xeeb;
2. Kev ua haujlwm zoo casting, nws tuaj yeem tuag-cam khwb cia precision qhov chaw nrog cov duab nyuaj thiab cov phab ntsa nyias, thiab qhov chaw ntawm cov castings yog du;
3. Kev kho deg tuaj yeem ua tiav: electroplating, txau, txau pleev xim, electrophoresis, polishing, dej hloov luam ntawv, thiab lwm yam.
4. Nws tsis nyiam hlau thaum melting thiab tuag-casting, tsis corrode pwm, thiab tsis lo rau pwm;
5. Nws muaj cov khoom siv kho tshuab zoo thiab hnav tsis kam ntawm chav sov;
6. Nws muaj qhov qis melting point thiab melts ntawm 385 degree, ua rau nws yooj yim rau tuag-cam khwb cia.

Cov teeb meem uas yuav tsum tau them sai sai rau thaum siv zinc alloy

• 1. Tsis zoo corrosion kuj. Thaum cov ntsiab lus impurity lead, cadmium, thiab tin nyob rau hauv lub alloy muaj pes tsawg leeg tshaj cov qauv, cov castings yuav muaj hnub nyoog thiab deform, manifesting raws li ntim expansion, loj txo nyob rau hauv txhua yam khoom, tshwj xeeb tshaj yog plasticity, thiab txawm rupture nyob rau lub sij hawm. Lub solubility ntawm txhuas, tin, thiab cadmium nyob rau hauv zinc alloys yog heev me me, yog li ntawd lawv yog concentrated nyob rau hauv lub grain ciam teb thiab ua lub cathode. Cov khoom siv aluminium-nplua nuj dhau los ua cov anode, uas txhawb kev sib txuas ntawm electrochemical corrosion nyob rau hauv muaj dej vapor (electrolyte). Tuag castings hnub nyoog vim intergranular corrosion.
• 2. Cov nyhuv raws sij hawm. Cov qauv ntawm zinc alloy feem ntau yog tsim los ntawm zinc-nplua nuj cov kua uas muaj Al thiab Cu thiab Al-nplua nuj cov kua muaj Zn. Lawv solubility txo qis nrog qhov txo qis ntawm qhov kub thiab txias. Txawm li cas los xij, vim yog qhov nrawm nrawm nrawm ntawm cov tuag castings, cov solubility ntawm cov khoom siv tau zoo heev saturated ntawm chav tsev kub. Tom qab qee lub sijhawm, qhov tshwm sim supersaturation no yuav maj mam txo qis, ua rau cov duab thiab qhov loj ntawm cov casting hloov me ntsis.
• 3. Zinc alloy tuag castings yuav tsum tsis txhob siv nyob rau hauv siab thiab qis kub (hauv qab 0 degree ) ua hauj lwm ib puag ncig. Zinc alloy muaj cov khoom siv kho kom zoo ntawm chav tsev kub. Txawm li cas los xij, lub zog tensile ntawm qhov kub thiab txias thiab cov khoom muaj feem cuam tshuam ntawm qhov kub thiab txias txo qis heev.
• Hom zinc alloys
• Zamak 3: Zoo ntws thiab txhua yam khoom. Nws yog siv rau hauv castings uas tsis tas yuav muaj zog txhua yam, xws li cov khoom ua si, teeb, kho kom zoo nkauj, thiab qee yam khoom siv hluav taws xob.
• Zamak 5: Zoo ntws thiab zoo txhua yam khoom. Nws yog siv nyob rau hauv castings uas muaj tej yam yuav tsum tau ntawm txhua yam muaj zog, xws li nws pib qhov chaw, electromechanical qhov chaw, mechanical qhov chaw, thiab hluav taws xob Cheebtsam.
• Zamak 2: Siv rau cov khoom siv kho tshuab uas muaj cov kev cai tshwj xeeb rau cov khoom siv kho tshuab, cov kev xav tau siab hardness, thiab cov kev cai dav dav dav.
• ZA8: Zoo fluidity thiab seem stability, tab sis tsis zoo fluidity. Nws yog siv nyob rau hauv tuag-casting workpieces nrog me me thiab siab xav tau ntawm precision thiab txhua yam muaj zog, xws li cov khoom siv hluav taws xob.
• Superloy: muaj fluidity zoo tshaj plaws thiab yog siv rau tuag-casting nyias-walled, loj-loj, high-precision, thiab complex-shaped workpieces, xws li cov khoom siv hluav taws xob thiab lawv cov casings.
• Cov zinc alloys sib txawv muaj qhov sib txawv ntawm lub cev thiab cov khoom siv kho tshuab, uas muab kev xaiv rau kev tuag casting tsim.

Zinc alloy xaiv

Qhov twg zinc alloy xaiv yuav tsum tau txiav txim siab los ntawm peb yam:

1. Lub hom phiaj ntawm kev tuag casting nws tus kheej yuav tsum tau ua kom tau raws li qhov yuav tsum tau ua.

• Cov khoom siv kho tshuab, lub zog tensile, yog qhov siab tshaj plaws ntawm cov khoom thaum nws tawg; elongation yog ib qho kev ntsuas ntawm brittleness thiab plasticity ntawm cov khoom; hardness yog qhov tsis kam ntawm cov khoom nto rau cov yas deformation los ntawm kev nkag los yog kev sib txhuam ntawm cov khoom tawv. .
• Kev ua haujlwm ib puag ncig: ua haujlwm kub, av noo, nruab nrab ntawm kev sib cuag nrog cov khoom ua haujlwm thiab huab cua nruj.
• Cov kev xav tau raug: ua tiav qhov tseeb thiab qhov ruaj khov.

2. Cov txheej txheem ua tau zoo

(1) Casting technology (2) Mechanical processing technology (3) Surface treatment technology

3. Kev lag luam zoo

Tus nqi ntawm cov khoom siv raw thiab cov khoom siv rau kev tsim khoom (nrog rau cov khoom siv smelting, cov tshuab tuag-casting, pwm, thiab lwm yam), nrog rau cov nqi tsim khoom. Zinc alloy Cheebtsam tswj lub luag haujlwm ntawm txhua yam hauv cov hlau. Ntawm cov khoom siv alloy, cov ntsiab lus alloy zoo: aluminium, tooj liab, magnesium; teeb meem impurity ntsiab: lead, cadmium, tin, hlau.

(1) Kev ua haujlwm ntawm aluminium

A. Txhim kho qhov kev ua tau zoo ntawm cov hlau alloy, ua kom lub cev muaj zog ntawm cov hlau, ua kom cov nplej ua kom zoo dua qub, ua kom muaj zog ntxiv, thiab txhim kho cov khoom siv kho tshuab.

B. Txo cov tshuaj tiv thaiv muaj peev xwm ntawm zinc rau hlau thiab txo cov corrosion ntawm cov ntaub ntawv hlau, xws li goosenecks, pwm, thiab crucibles. Cov ntsiab lus aluminium yog tswj ntawm 3.8 ~ 4.3%. Feem ntau xav txog qhov xav tau lub zog thiab fluidity, zoo fluidity yog qhov tsim nyog rau kev ua tiav, raug qhov loj me thiab du nto casting.

(2) Lub luag haujlwm tooj liab

A. Ua kom cov hardness thiab lub zog ntawm cov alloy;

B. Txhim kho qhov hnav tsis kam ntawm cov hlau;

C. Txo intergranular corrosion.

D. Thaum cov ntsiab lus tooj liab ntau dua 1.25%, qhov loj thiab lub zog ntawm lub tshuab tuag casting yuav hloov vim tsis ua haujlwm; lub ductility ntawm alloy yuav raug txo.

(3) Lub luag haujlwm ntawm magnesium

A. Txo intergranular corrosion

B. Kho cov qauv hlau, yog li ua kom lub zog ntawm cov hlau

C. Txhim kho qhov hnav tsis kam ntawm cov hlau

D. Qhov tsis zoo: Thaum cov ntsiab lus magnesium yog > 0.08%, nws yuav ua rau thermal brittleness, txo toughness, thiab txo fluidity; Nws yog ib qho yooj yim rau oxidized thiab poob rau hauv lub xeev molten ntawm cov hlau.

(4) Cov ntsiab lus impurity

Lead, cadmium, thiab tin ua zinc alloys rhiab heev rau intergranular corrosion, ceev lawv tus kheej intergranular corrosion nyob rau hauv sov thiab ntub ib puag ncig, txo cov neeg kho tshuab zog, thiab ua rau lub dimension hloov nyob rau hauv castings. Thaum cov ntsiab lus ntawm impurity ntsiab lead thiab cadmium nyob rau hauv zinc alloy yog siab dhau lawm thiab lub workpiece twb cia li tuag-cam khwb cia, qhov nto zoo yog li qub. Txawm li cas los xij, tom qab khaws cia hauv chav sov rau ib lub sijhawm (yim lub lis piam mus rau ob peb lub hlis), bubbling tshwm rau saum npoo.

A. Hlau reacts nrog txhuas los ua Al5Fe2 intermetallic tebchaw, ua rau poob ntawm aluminium ntsiab thiab tsim dross.

B. Tsim cov pob tawv tawv hauv kev tuag castings, cuam tshuam tom qab ua tiav thiab polishing.
C. Ua kom lub brittleness ntawm cov hlau. Lub solubility ntawm hlau nyob rau hauv cov kua zinc nce raws li qhov kub thiab txias. Txhua qhov kev hloov pauv ntawm qhov kub ntawm cov kua zinc hauv qhov cub yuav ua rau cov hlau tsis muaj dej ntau dhau (thaum kub poob) lossis tsis txaus (thaum kub nce). Thaum lub caij hlau yog supersaturated, cov hlau supersaturated yuav hnov ​​​​mob nrog cov txhuas hauv cov hlau, uas ua rau muaj qhov nce ntawm dross. Thaum cov hlau tsis muaj dej tsis txaus, cov hlau alloy qhov corrosion ntawm zinc lauj kaub thiab cov ntaub ntawv gooseneck yuav nce rov qab mus rau lub xeev saturated. Ib qho tshwm sim ntawm ob qho kev hloov pauv kub yog qhov kawg ntawm kev noj aluminium thiab tsim ntau dross.

Cov teeb meem uas xav tau kev saib xyuas hauv zinc alloy ntau lawm

1. Kev tswj cov alloy muaj pes tsawg leeg pib nrog kev yuav khoom alloy ingots. Lub alloy ingots yuav tsum yog raws li ultra-siab purity zinc, ntxiv rau ultra-siab purity aluminium, magnesium, thiab tooj liab. Tus neeg muag khoom muaj cov qauv nruj nruj. Cov ntaub ntawv zoo zinc alloy yog qhov lav rau kev tsim cov khoom zoo.
2. Cov khoom siv hlau yuav tsum tau muab khaws cia rau hauv qhov chaw huv thiab qhuav kom tsis txhob xeb dawb los ntawm kev raug dej mus ntev, los yog muaj kab mob los ntawm lub Hoobkas av, uas ua rau kev tsim cov slag thiab ua rau cov hlau poob. Lub Hoobkas huv huv ib puag ncig zoo heev rau kev tswj tau zoo ntawm cov alloy muaj pes tsawg leeg.
3. Qhov kev faib ua feem ntawm cov ntaub ntawv tshiab thiab cov khoom siv rov ua dua tshiab xws li nozzles yuav tsum tsis pub tshaj 50%. Feem ntau, cov ntaub ntawv tshiab: cov ntaub ntawv qub=70:30. Ua tiav remelts ntawm cov hlau maj mam txo cov nqi ntawm txhuas thiab magnesium.
4. Thaum remelting cov khoom nozzle, qhov kub thiab txias remelting yuav tsum nruj me ntsis tswj tsis pub tshaj 430 degree kom tsis txhob poob ntawm txhuas thiab magnesium.
5. Cov nroj tsuag tuag-casting uas muaj cov xwm txheej yog qhov zoo tshaj plaws los siv lub hauv paus hauv qhov cub kom yaj cov zinc alloys kom cov hlau ingots thiab cov khoom siv rov ua dua tau sib npaug. Cov flux tuaj yeem siv tau zoo dua los ua kom cov alloy muaj pes tsawg leeg thiab kub sib xws thiab ruaj khov. Electroplating scraps thiab nplua chips yuav tsum tau yaj nyob rau hauv nyias qhov cub.

Yuav ua li cas daws cov teeb meem tshwm sim hauv zinc alloy tuag castings

Txij li txhua qhov tsis xws luag yog tshwm sim los ntawm ntau yam cuam tshuam sib txawv, nws yog qhov tsim nyog los daws qhov teeb meem hauv kev tsim khoom tiag tiag. Thaum ntsib ntau yam laj thawj, nws puas tsim nyog kho lub tshuab ua ntej? Los yog hloov cov khoom ua ntej? Los yog hloov pwm ua ntej? Nws raug nquahu kom nrog nws nyob rau hauv qhov kev txiav txim ntawm qhov nyuaj, thawj zaug yooj yim thiab tom qab ntawd complex, hauv qhov kev txiav txim no:

1. Ntxuav qhov sib cais, ntxuav cov pwm kab noj hniav, ntxuav lub ejector; txhim kho cov txheej txheem txheej thiab txau; nce lub clamping quab yuam thiab nce tus nqi ntawm pouring hlau. Cov no yog cov kev ntsuas yooj yim uas tuaj yeem siv tau.
2. Kho cov txheej txheem tsis, txhaj tshuaj, txhaj tshuaj ceev, puv sijhawm, pwm qhib lub sijhawm, nchuav kub, pwm kub, thiab lwm yam.
3. Hloov cov ntaub ntawv, xaiv cov khoom zoo aluminium alloy ingots, hloov qhov piv ntawm cov ntaub ntawv tshiab thiab cov ntaub ntawv siv dua tshiab, thiab txhim kho cov txheej txheem smelting.
4. Hloov cov pwm, hloov cov txheej txheem pouring, ntxiv cov rooj vag sab hauv, ntxiv grooves overflow, tso grooves, thiab lwm yam.

Piv txwv li, cov laj thawj rau flash hauv tuag castings suav nrog:

1. Die-casting tshuab teeb meem: Lub clamping quab yuam yog kho tsis raug.
2. Txheej txheem teeb meem: Qhov kev txhaj tshuaj ceev yog siab dhau, ua rau lub siab cuam tshuam lub siab uas siab dhau.
3. Pwm teeb meem: deformation, khib nyiab ntawm qhov chaw sib cais, hnav thiab tsis sib xws thiab cov sliders, thiab lub zog template tsis txaus.
4. Cov txheej txheem ntawm kev ntsuas los daws qhov teeb meem: ntxuav qhov chaw sib cais → nce lub zog clamping → kho cov txheej txheem tsis → kho qhov hnav ntawm pwm → txhim kho qhov tawv ntawm pwm. Los ntawm qhov yooj yim mus rau qhov nyuaj, txhua zaus koj ua qhov kev txhim kho, sim cov nyhuv ua ntej, thiab yog tias nws tsis ua haujlwm, txav mus rau theem thib ob.

Zinc alloy smelting

Lub cev thiab tshuaj phenomena ntawm cov txheej txheem smelting. Alloy smelting yog ib feem tseem ceeb ntawm txoj kev tuag-casting. Cov txheej txheem smelting tsis yog tsuas yog kom tau cov hlau molten xwb, tab sis tseem ceeb tshaj, kom tau txais cov tshuaj lom neeg muaj pes tsawg leeg uas ua tau raws li cov kev cai, kom cov khoom tuag-casting tuaj yeem tau txais cov qauv siv lead ua zoo thiab cov roj, cov kua hlau nrog cov khoom me me. Thaum lub sij hawm smelting txheej txheem, kev sib cuam tshuam ntawm cov hlau thiab cov pa roj thiab kev sib cuam tshuam ntawm cov hlau molten thiab crucible ua rau cov khoom hloov pauv, tsim cov inclusions thiab outgassing. Yog li ntawd, kev tsim cov txheej txheem melting kom raug thiab siv nruj me ntsis yog qhov tseem ceeb lav kom tau txais cov khoom zoo.

1. Kev sib cuam tshuam ntawm cov hlau thiab roj Thaum lub sij hawm smelting, cov gases ntsib xws li hydrogen (H2), oxygen (O2), dej vapor (H2O), nitrogen (N2), CO2, CO, thiab lwm yam. Cov roj no yuav yaj hauv cov kua hlau. , los yog tshuaj lom nrog nws.
2. Qhov chaw ntawm cov pa roj tuaj yeem nkag mus rau cov kua hlau alloy los ntawm cov pa roj hauv lub tshuab hluav taws xob, cov khoom siv hluav taws xob, cov ntaub ntawv raw, flux, cov cuab yeej, thiab lwm yam.
3. Kev sib cuam tshuam ntawm cov hlau thiab crucible Thaum lub smelting kub siab dhau lawm, cov tshuaj tiv thaiv ntawm cov hlau crucible thiab zinc kua yog ceev, thiab oxidation cov tshuaj tiv thaiv ntawm hlau tshwm sim nyob rau saum npoo ntawm crucible rau oxides xws li Fe2O3; Tsis tas li ntawd, cov ntsiab lus hlau kuj ua rau cov kua zinc los ua FeZn13 compounds (zinc slag), yaj hauv cov kua zinc. Lub phab ntsa thickness ntawm cov hlau crucible txuas ntxiv txo kom txog thaum nws yog scrapped.

Melting kub tswj ntawm zinc alloy

1. Tuag casting kub

Lub melting point ntawm zinc alloy rau tuag casting yog 382 ~ 386 degree. Kev tswj qhov kub thiab txias yog qhov tseem ceeb hauv kev tswj cov khoom sib xyaw ntawm zinc alloy. Txhawm rau kom ntseeg tau tias muaj dej zoo ntawm cov kua hlau ua kom cov kab noj hniav, qhov kub ntawm cov hlau molten hauv zinc lauj kaub ntawm lub tshuab tuag-casting yog 415 ~ 430 degree. Lub sab sauv txwv ntawm qhov kub-casting rau nyias-walled qhov chaw thiab complex qhov chaw tuaj yeem teem caij; qhov kev txwv sab saud ntawm qhov tuag-casting kub rau cov tuab-walled qhov chaw thiab qhov chaw yooj yim tuaj yeem txo qis. Qhov kub ntawm cov hlau molten nyob rau hauv nruab nrab smelting rauv yog 430 ~ 450 degree. Qhov kub ntawm cov hlau molten nkag mus rau hauv gooseneck yog qhov pib zoo ib yam li qhov kub hauv lub lauj kaub zinc.

Los ntawm kev tswj qhov kub ntawm cov hlau molten nyob rau hauv lub lauj kaub zinc, lub pouring kub yuav raug tswj kom raug. Thiab xyuas kom meej tias: ① Cov hlau molten yog cov kua huv uas tsis muaj oxides; ② Cov dej kub tsis hloov pauv.

Qhov tsis zoo ntawm qhov kub thiab txias ntau dhau: ① Hlawv poob ntawm txhuas thiab magnesium ntsiab. ② Cov hlau oxidation ceev nrawm, qhov kub hnyiab nce, thiab zinc slag nce. ③ Thermal expansion yuav ua rau lub taub hau rauj tau daig. ④ Ntau cov ntsiab lus hlau yog melted rau hauv cov alloy hauv cov cam khwb cia hlau crucible, thiab cov tshuaj tiv thaiv ntawm zinc thiab hlau yog nrawm ntawm qhov kub thiab txias. Ib qho nyuaj ntawm cov hlau-aluminium intermetallic compounds yuav raug tsim, ua rau hnyav hnyav ntawm lub taub hau rauj thiab gooseneck. ⑤ Roj noj nce raws li.

Qhov kub thiab txias tsis dhau: Cov hlau tsis muaj dej tsis zoo, uas tsis tsim nyog rau kev tsim thiab cuam tshuam qhov zoo ntawm qhov tuag castings.

Niaj hnub no lub tshuab tuag-casting melting pots los yog furnaces yog nruab nrog ntsuas kub thiab tswj tshuab. Kev ua haujlwm txhua hnub feem ntau suav nrog kev tshuaj xyuas tsis tu ncua kom ntseeg tau tias qhov tseeb ntawm cov ntsuas kub ntsuas. Tsis tu ncua ntsuas qhov kub thiab txias ntawm lub cub tawg nrog lub ntsuas qhov ntsuas qhov ntsuas (thermometer) thiab kho. Kev paub txog kev tuag-casters yuav saib cov yaj nrog qhov muag liab qab. Yog hais tias lub yaj tsis dhau nkig thiab meej tom qab scraping, thiab slagging tsis ceev heev, nws txhais tau tias qhov kub thiab txias yog qhov tsim nyog; yog tias cov yaj yog khov heev, nws txhais tau tias qhov kub thiab txias yog tsawg; scraping Ib txheej ntawm cov dej khov dawb sai sai tshwm rau ntawm cov kua dej tom qab tshem tawm slag. Yog hais tias lub slag nce sai heev, nws qhia tau hais tias qhov kub thiab txias yuav tsum tau hloov nyob rau hauv lub sij hawm.

2. Yuav ua li cas ua kom qhov kub thiab txias

Ib txoj hauv kev zoo tshaj plaws: siv lub hauv paus smelting rauv thiab lub tshuab tuag-casting rauv ua lub cub tawg kom tsis txhob muaj qhov kub thiab txias hloov thaum zinc ingots ncaj qha ntxiv rau zinc lauj kaub rau melting. Centralized smelting tuaj yeem ua kom muaj kev ruaj ntseg ntawm cov hlau alloy.

Qhov thib ob txoj kev zoo tshaj plaws: Siv cov txheej txheem pub mis tsis zoo rau cov hlau molten, uas tuaj yeem tswj tau qhov kev noj zaub mov ruaj khov, qhov kub thiab txias ntawm cov kua alloy thiab cov kua qib siab ntawm zinc lauj kaub.

Yog hais tias tam sim no cov khoom tsim tau ntxiv cov ntaub ntawv ncaj qha rau hauv lub lauj kaub zinc, nws raug nquahu kom ntxiv tag nrho cov hlau ingot ntawm ib lub sij hawm es tsis txhob ntxiv me me alloy ingots ntau zaus, uas tuaj yeem txo qhov kub hloov pauv los ntawm qhov sib ntxiv.

Tsim thiab tswj cov zinc dross

Smelting alloys los ntawm cov khoom mus rau cov kua yog ib tug complex lub cev thiab tshuaj txheej txheem. Cov tshuaj tiv thaiv tshuaj tshwm sim ntawm cov pa roj thiab cov hlau molten, uas cov tshuaj tiv thaiv ntawm oxygen yog qhov muaj zog tshaj plaws. Qhov saum npoo ntawm cov hlau yog oxidized thiab ib qho nyiaj ntawm dross yog tsim. Cov dross muaj oxides thiab intermetallic compounds ntawm hlau, zinc, thiab txhuas. Cov dej khib nyiab los ntawm qhov chaw yaj feem ntau muaj txog 90% zinc alloy. Cov tshuaj tiv thaiv tus nqi ntawm zinc dross tsim nce exponentially raws li lub melting kub nce. Raws li ib txwm muaj, cov zis ntawm thawj zinc alloy ingots yog tsawg dua 1%, nyob rau hauv thaj tsam ntawm 0.3 ~ 0.5%; thaum lub slag ntau lawm ntawm remelting nozzles, pov tseg workpieces, thiab lwm yam. yog feem ntau ntawm 2 ~ 5%.

Cim npe nrov: Tuam Tshoj zinc alloy tuag casting manufacturers, lwm tus neeg