Txhua lub kav hlau kav pib raws li cov kwj ntawm cov hlau molten. Dab tsi hloov cov kua ua rau lub siab-rated, corrosion-resistant pipeline tivthaiv yog cov txheej txheem tsim ua kom zoo dua ntau xyoo:centrifugal casting. NtawmTianyiSuns, peb ua cov txheej txheem no ntawm lub hauv paus ntawm peb cov yeeb nkab ntau lawm, thiab nkag siab tias nws ua haujlwm li cas pab piav qhia tias vim li cas cov yeeb nkab tiav ua tiav txoj kev nws ua.
Lub hauv paus ntsiab lus tom qab centrifugal Casting
Centrifugal casting siv lub zog sib hloov los faib cov hlau molten tiv thaiv phab ntsa sab hauv ntawm cov pwm hloov hlau, hu ua "pwm" lossis "tuag." Thaum cov hlau yog poured, lub pwm tig ntawm kev kub ceev. Centrifugal quab yuam nias lub molten hlau sab nraud tawm tsam pwm nto, qhov chaw nws solidifies uniformly.
This method produces a dense, uniform pipe body with a smooth internal surface-advantages that other casting methods cannot easily replicate. Kev ua haujlwm spinning kuj tseem ua rau cov impurities thiab gases tawm sab nraud, txo cov kev puas tsuaj sab hauv thiab txhim kho cov txheej txheem kev ncaj ncees ntawm cov yeeb nkab tiav.
Cov Txheej Txheem Ntau Lawm: Los ntawm Melt mus rau cov yeeb nkab tiav
1. Kev npaj cov khoom nyoos
Kev tsim khoom pib ua tib zoo xaiv cov khoom siv raw, suav nrog npua hlau, steel seem, thiab cov khoom siv alloying. Tag nrho cov khoom nkag tau raug tshuaj ntsuam xyuas los txheeb xyuas qhov muaj pes tsawg leeg thiab paub meej tias tsim nyog rau cov khoom siv hlau.
2. Melting thiab Desulfurization
Cov khoom siv raw yog yaj hauv qhov cub induction. Vim hais tias leej faj ua rau cov hlau tsis zoo, cov hlau molten raug desulfurization ua ntej casting, txo cov ntsiab lus ntawm cov sulfur mus rau ib theem uas haum rau spheroidization.
3. Spheroidization thiab Inoculation
Cov kauj ruam tseem ceeb no yog qhov muab cov hlau nplaum nws lub npe. Magnesium ntxiv rau cov hlau molten, uas ua rau cov graphite tsim ua nodules es tsis txhob flakes. Tom qab ntawd, inoculation tshwm sim, refining lub graphite qauv thiab xyuas kom meej txhua yam khoom nyob rau hauv lub casting.
4. Centrifugal Casting
Cov hlau molten npaj yog poured rau hauv ib tug rotating pwm. Lub zog centrifugal faib cov hlau sib npaug ntawm cov pwm ntev, ua cov yeeb nkab nrog cov phab ntsa tuab thiab cov qauv ntom ntom. Cov yeeb nkab yog tom qab ntawd txias nyob rau hauv kev tswj xyuas kom tsis txhob tawg thiab ua kom cov qauv hlau xav tau.
5. Kev kho cua sov thiab cua sov
Tom qab casting, cov yeeb nkab undergoes annealing los txo cov kev ntxhov siab sab hauv, soften tus qauv mus rau qhov yuav tsum tau ductility, thiab ua tiav cov txheej txheem txhua yam. Kub profiles yog ua tib zoo tswj thoob plaws hauv lub voj voog kho cua sov.
6. Machining ntawm lub qhov (socket) thiab Spigot
Lub qhov (socket) kawg thiab qhov kawg ntawm lub qhov (spigot) yog qhov tseeb machined los xyuas kom meej qhov tseeb qhov tseeb thiab kev sib raug zoo nrog cov qauv kev sib txuas thiab cov gaskets. Cov kauj ruam no yog qhov tseem ceeb rau kev ua tiav qhov tsis muaj paug, txwv kev sib txuas hauv thaj chaw.
7. Txheej thiab hauv ob sab phlu
Sab nrauv sab nrauv tau txais cov xim hlau zinc txheej ntxiv rau txheej txheej, thaum sab hauv sab hauv yog lined nrog cov cement mortar lossis lwm yam khoom siv tiv thaiv. Cov kev kho no muab cov kev tiv thaiv corrosion uas tso caiductile hlau kavua tau ntau xyoo hauv kev pabcuam faus.
8. Hydrostatic Test thiab tshuaj xyuas
Txhua cov yeeb nkab tiav dhau los ntawm kev ntsuas hydrostatic siab los xyuas kom meej tias nws tuaj yeem tiv taus qhov ntsuas kev ua haujlwm tsis muaj qhov to. Dimensional checks, kuaj pom, thiab cov ntaub ntawv pov thawj ua raws li ua ntej cov yeeb nkab tau pom zoo rau kev xa khoom.
Qhov txheej txheem xa
Cov txheej txheem centrifugal casting tsis yog ib txoj kev tsim khoom nkaus xwb-nws txiav txim siab cov khoom tseem ceeb hauv kev pabcuam. Cov qauv ntom ntom tsim los ntawm kev ua haujlwm spinning resists sab hauv siab thiab sab nraud loads zoo dua li static casting. Cov phab ntsa tuab tuab ua kom ntseeg tau tias kev ua tau zoo nyob rau hauv siab. Kev tswj kom txias thiab annealing sequence xa cov ductility xav tau rau tuav, installation, thiab tsis kam mus rau hauv av txav. Cov hauv ob sab hauv muab cov kev tiv thaiv corrosion thiab hydraulic efficiency xav tau rau xyoo lawm ntawm kev xa dej.
Kev Tswj Xyuas Zoo ntawm txhua theem
TianyiSuns siv cov txheej txheem tsom mus rau qhov zoo. Cov khoom siv raw khoom tau raug kuaj ua ntej txais. Lub chemistry ntawm molten hlau yog saib xyuas thaum melting thiab spheroidization. Parameters rau casting-xws li pwm ceev, pouring kub, thiab txias npaum li cas-yog tswj kom ntseeg tau tias cov zis zoo ib yam. Cov kav dej tiav tau raug kuaj xyuas hydrostatic, kev kuaj xyuas qhov ntev, thiab kev tshuaj xyuas qhov muag ua ntej tso tawm.
Daim ntawv thov
Cov kav dej uas tsim los ntawm cov txheej txheem no ua haujlwm rau kev xa dej hauv nroog thiab kev sib txuas sib txuas, kev sau cov dej khib nyiab, kev siv dej hauv vaj tse, thiab cov txheej txheem dej. Nyob rau hauv txhua daim ntawv thov, centrifugal casting txheej txheem muab kev sib xyaw ua ke ntawm lub zog, ductility, thiab corrosion kuj yuav tsum tau rau lub sij hawm ntev, txhim khu kev qha.
Xaus
Centrifugal castingtransforms molten hlau rau hauv cov yeeb nkab uas muaj peev xwm ua haujlwm hauv av tau ntau xyoo. Cov txheej txheem ua ke nrog kev tswj xyuas cov ntaub ntawv raw, hlau chemistry, kev sib hloov ceev, thiab kev kho cua sov-txhua kauj ruam uas ua rau cov khoom kawg ntawm cov khoom. Ntawm TianyiSuns, cov txheej txheem no tsim lub hauv paus ntawm peb cov khoom siv hlau yeeb nkab, thiab nkag siab nws pab cov neeg siv khoom txaus siab rau qhov lawv tau txais thaum lawv qhia peb cov yeeb nkab.
