Dab tsi yog ob pawg ntawm cov txheej txheem casting?

Casting txheej txheem yog cov txheej txheem tsim khoom tseem ceeb siv los tsim ntau yam khoom thiab cov khoom los ntawm kev tsim cov khoom molten rau hauv daim ntawv xav tau hauv pwm. Cov txheej txheem no yog lub hauv paus hauv kev lag luam xws li automotive, aerospace, foundry, thiab kos duab, thiab lwm yam. Casting txheej txheem tuaj yeem muab faib ua ob pawg loj: siv tau pwm casting thiab pwm mus tas li. Hauv phau ntawv qhia dav dav no, peb yuav tshawb txog ob pawg tseem ceeb no, lawv cov yam ntxwv, thiab cov piv txwv ntawm cov txheej txheem casting hauv txhua pab pawg.

1. Expendable Pwm Casting:

Expendable pwm casting, tseem hu ua xuab zeb casting los yog ib ntus pwm casting, yog ib pawg ntawm cov txheej txheem casting qhov twg cov pwm siv los ua cov khoom molten yog ib leeg-siv thiab feem ntau yog ua los ntawm cov ntaub ntawv xws li xuab zeb, plaster, los yog ceramics. Expendable pwm casting txoj kev muaj ntau yam, raug nqi, thiab zoo tsim rau qhov loj thiab complex. Nov yog qee cov yam ntxwv tseem ceeb ntawm expendable pwm casting:

a. Sand Casting:

Xuab zeb casting yog ib qho ntawm feem ntau siv thiab zoo-paub expendable pwm casting txoj kev. Nws suav nrog kev tsim pwm kab noj hniav hauv cov xuab zeb thiab nchuav hlau molten rau hauv pwm. Xuab zeb casting yog qhov hloov tau zoo heev thiab siv los tsim ntau yam hlau, los ntawm cov khoom me me mus rau cov khoom loj loj. Nws yog feem ntau ua hauj lwm nyob rau hauv zus tau tej cov cav blocks, lub tog raj kheej taub hau, thiab lwm yam hnyav machinery Cheebtsam.

b. Kev nqis peev Casting:

Peev casting, tseem hu ua ploj-wax casting, yog lwm daim ntawv ntawm expendable pwm casting. Nyob rau hauv txoj kev no, ib tug wax qauv los yog replica ntawm qhov kawg yog coated nrog ib tug refractory khoom los tsim ib tug pwm. Tom qab ntawd cov wax melted thiab drained (li no "poob ciab") kom tawm tom qab ib tug hollow pwm kab noj hniav. Peev casting yog paub txog nws lub peev xwm los tsim intricate thiab ze-net-puab qhov chaw nrog zoo heev nto tiav. Nws yog dav siv nyob rau hauv kev lag luam xws li aerospace, hniav nyiaj hniav kub, thiab kos duab foundries.

c. Plhaub Molding:

Plhaub molding yog ib qho kev hloov ntawm cov xuab zeb casting uas siv cov resin-coated xuab zeb sib tov los tsim pwm plhaub. Cov txheej txheem muab kev txhim kho saum npoo tiav thiab qhov tseeb qhov tseeb piv rau cov xuab zeb casting. Plhaub molding feem ntau yog siv los tsim cov khoom siv tsheb, cov khoom siv, thiab ntau yam kev lag luam castings.

d. Plaster Casting:

Plaster casting, tseem hu ua plaster pwm casting, ntiav pwm ua los ntawm plaster ntawm Paris. Txoj kev no feem ntau yog siv rau hauv kos duab thiab duab puab foundries los tsim cov ncauj lus kom ntxaws thiab kos duab. Plaster casting kuj yog siv los tsim cov qauv thiab cov khoom siv ib leeg.

e. Ceramic Casting:

Ceramic casting, los yog ceramic pwm casting, ntiav pwm ua los ntawm refractory ceramics. Nws yog lub npe hu rau nws lub peev xwm los tsim intricate thiab high-precision qhov chaw. Ceramic casting feem ntau yog siv nyob rau hauv kev lag luam aerospace rau kev tsim cov khoom siv aerospace nrog cov geometry nyuaj.

2. Permanent Pwm Casting:

Kev tsim pwm tas mus li, raws li lub npe qhia, suav nrog kev siv cov pwm rov siv tau los ntawm cov ntaub ntawv xws li hlau lossis cov khoom siv refractory. Tsis zoo li cov pwm siv tau, uas tau muab pov tseg tom qab siv txhua zaus, cov pwm tuaj yeem siv tau ntau zaus rau ntau lub voj voog casting. Cov txheej txheem pwm mus tas li yog qhov txaus siab rau lawv cov kev ua tau zoo, kev ua haujlwm zoo hauv cov khoom ntim siab, thiab muaj peev xwm tsim cov khoom zoo ib yam thiab meej. Nov yog qee cov yam ntxwv tseem ceeb ntawm cov pwm mus tas li:

a. Tuag Casting:

Tuag casting yog ib tug dav siv mus tas li pwm casting txheej txheem uas siv high-pressure txhaj ntawm molten hlau rau hauv ib tug reusable hlau pwm, hu ua tuag. Nws yog feem ntau siv los tsim cov khoom sib txawv thiab cov khoom siv siab rau kev lag luam xws li tsheb, hluav taws xob, thiab cov khoom siv. Tuag casting tuaj yeem raug cais ntxiv rau hauv chav txias txias thiab kub chamber tuag casting, nyob ntawm seb hom hlau raug cam.

b. Gravity Tuag Casting:

Lub ntiajteb txawj nqus tuag casting, tseem hu ua pwm mus tas li los yog chill casting, cia siab rau lub ntiajteb txawj nqus los sau cov pwm kab noj hniav nrog cov hlau molten. Txoj kev no yog siv los tsim cov khoom nrog qhov zoo ntawm qhov tseeb thiab cov khoom siv kho tshuab. Lub ntiajteb txawj nqus tuag casting yog feem ntau ua haujlwm nyob rau hauv automotive thiab aerospace industries.

c. Low-Pressure Tuag Casting:

Low-pressure tuag casting yog ib qho kev hloov pauv ntawm kev tuag casting uas siv cov huab cua tsis tshua muaj siab los yog roj los yuam cov hlau molten rau hauv pwm. Cov txheej txheem no yog tsim los ua qhov loj thiab tuab nrog txo porosity. Nws yog feem ntau siv nyob rau hauv zus tau tej cov txhuas castings rau automotive thiab aerospace daim ntaub ntawv.

d. Centrifugal Casting:

Centrifugal casting yog ib qho tshwj xeeb pwm casting txoj kev uas molten hlau yog poured rau hauv ib tug rotating pwm. Lub zog centrifugal sib npaug faib cov hlau raws cov kab noj hniav pwm, ua rau cov khoom siv hlau zoo heev. Centrifugal casting yog siv los ua cov kav dej, lub tog raj kheej, thiab lwm yam khoom siv cylindrical.

e. Nruam Casting:

Nruam casting feem ntau yog siv rau kev tsim cov hlau ntev, xws li tuav, rods, thiab hlab. Nyob rau hauv cov txheej txheem no, molten hlau yog txuas ntxiv mus rau hauv dej-txias pwm, qhov twg nws solidifies thaum nws txav los ntawm pwm. Kev nruam nruam yog qhov tseem ceeb hauv kev lag luam hlau thiab cov hlau tsis muaj hlau.

f. Semi-Ntev Pwm Casting:

Semi-permanent pwm casting, raws li lub npe implies, siv reusable pwm uas muaj ib tug tsawg lifespan tab sis yuav siv tau rau ntau lub voj voog casting. Txoj kev no ua ke ib co yam ntxwv ntawm ob qho tib si expendable thiab mus tas li pwm casting. Nws yog feem ntau ua hauj lwm rau kev tsim cov khoom nrog nruab nrab ntim thiab complexity.

Hauv kev xaus, cov txheej txheem casting yog categorized rau hauv ob pawg loj: expendable pwm casting thiab mus tas li pwm casting. Expendable pwm casting suav nrog ib leeg-siv pwm tsim los ntawm cov ntaub ntawv xws li xuab zeb, plaster, lossis ceramics, thiab suav nrog cov txheej txheem xws li xuab zeb casting thiab peev casting. Cov pwm tas mus li casting siv cov pwm tuaj yeem siv tau los ntawm cov ntaub ntawv zoo li hlau lossis cov khoom siv hluav taws xob thiab suav nrog cov txheej txheem xws li tuag casting, lub ntiajteb txawj nqus tuag casting, thiab nruam casting. Qhov kev xaiv ntawm cov txheej txheem casting nyob ntawm cov yam xws li ib feem complexity, xav tau precision, ntau lawm ntim, thiab cov khoom yuav tsum tau, thiab txhua tus txheej txheem muaj qhov zoo sib xws nyob rau hauv ntau yam kev siv.