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Xov xwm

Tsev > Xov xwmNtsiab lus

Tsheb Casting Anti - Hlab Lwm Yam

Ningbo Qianhao Hlau Khoom Co., Ltd | Updated: Oct 10, 2017

Ntau lub tsheb kheej kheej, lub plhaub taub hau, lub plhaw thiab lub qhov hluav taws xob, lub tsho dej hauv dej thiab qhov chaw kub ntawm lub Department ntawm kev thinning thev uas yog cov leeg tsis txaus ntseeg, vim hais tias qhov chaw ua haujlwm hauv qhov kab tsuag nyuaj nyuaj, qhov nquag khiav dej txias, ua rau lub cav hlawv lub voj voog; mus rau hauv cov pa roj carbon dioxide yuav cuam tshuam txog cov paib vortex tus cwj pwm, muaj feem cuam tshuam rau kev ua tau zoo ntawm lub cav, yog li los daws cov leeg rau lub plhaub taub hau thiab lwm lub tsheb casting Nws tseem ceeb heev.

Ua ntej, qhov ua rau cov leeg tsis raug

Ntawm 573 ℃, lub quartz xuab zeb muaj qhov kev hloov ntawm crystal hloov ntawm β-quartz rau α-quartz. Lub thermal kev ua kom tshwm sim los ntawm theem hloov hloov ua rau tawg ntawm lub npoo ntawm cov xuab zeb, thiab cov hlau ntxaum mus rau hauv cov tawg kom tsim tau cov leeg. Cov xwm txheej ntawm cov leeg ntawm cov leeg tsim muaj, ib qho yog thermal kev nyuaj siab los ntawm theem hloov expansion yog siab tshaj cov xuab zeb qhov chaw tob zog; qhov thib ob yog lub raj mis hlau thiab muaj txaus txaus. Cov leeg txhuam hniav yog ib hom kev ua kom zoo nkauj, qhov piv txwv piv rau hauv daim duab 1. Feem ntau ntseeg tau tias: ① Tshaj siab dua cov ntsiab lus ntawm cov xuab zeb SiO2, qhov loj dua cov leeg ntawm cov leeg. (2) Qhov ntau dua cov concentration ntawm thawj xuab zeb, qhov ntau dua ntawm cov quav hniav. ③ qhov siab dua ntawm qhov kub thiab txias, qhov loj dua cov leeg los ntawm cov leeg. Tab sis qhov kub thiab txias yog txiav txim siab raws li cov qauv siv hlau, phab ntsa thickness, tsis tuaj yeem hloov arbitrarily.

Qhov twg tuaj yeem txo cov thermal kev nyuab siab yuav txo qhov tshwm sim ntawm moire, qhov twg tuaj yeem txhim kho cov tub ntxhais lub zog thiab kev muaj zog ntawm cov hauv paus ntsiab lus yuav txo qhov kev cuam tshuam ntawm cov leeg, qhov twg qhov tseem ceeb tuaj yeem ua kom cov hlau nplaum hluav taws tuaj yeem txo qhov kev txaj muag. Kev xyaum tau ua pov thawj tias qhov kev xav ntawm cov xuab zeb los ua cov leeg tsis muaj lub hauv paus ntawm qhov kev txiav txim: txias lub thawv xuab zeb → PEPSET tawv xuab zeb → coated xuab zeb → furan resin xuab zeb → alkaline phenolic resin xuab zeb.

Thib ob, los daws qhov teeb meem ntawm cov leeg tsis muaj tseeb

Cov kev ntsuas tawm tsam cov leeg deficiency tuaj yeem raug ntaus nqi rau cov hauv qab no:

(1) txhawm rau txo cov xuab zeb tawm ntawm cov xuab zeb loj ntawm cov xuab zeb yog qhov ua rau ntawm qhov tshwm sim ntawm cov hlab ntsha, yog li kom txo cov xuab zeb thawj los daws cov teeb meem ntawm cov leeg defects ua ntej xav txog cov xuab zeb hauv siab Yog tias cov xuab zeb ua kom zoo, yog tias cov xuab zeb xa tom qab tshaj li ntawm 900 ℃ saum kev ntsuas kub siab tom qab cua txias theem hloov yuav tsis rov qab, yog li cov thawj xuab zeb rov qab los tom qab siv tas yuav ua kom cov leeg tsis muaj zog; qhov tsis zoo ntawm cov hlau cam tsis xav tau cov thawj xuab zeb muaj cov ntsiab lus SiO2 dhau mus, mus txog 92% Ua tau, vim tias ntau dua cov SiO2 cov ntsiab lus ntawm qhov ntau dua ntawm thermal expansion, cov khoom siv dav dav yuav sim siv cov xuab zeb dua tshiab.

(2) los hloov cov thawj xuab zeb loj me me Yog tias cov thawj xuab zeb qhov loj me heev, tag nrho txoj kev nthuav dav yuav ua rau pom dav dua, kev siv ntawm peb los yog plaub sab cib ntsa, lub tsheb kheej kheej lub taub hau me me 0.355 ~ 0.154mm (50/100 Lub Taub Hau) txhuam cov xuab zeb, sim kom tsis txhob siv qhov loj me me ntawm 0.224 ~ 0.106mm (70/140 mesh) thiab zoo dua xuab zeb.

(3) txhawm rau txhim kho cov xuab zeb hauv chav sov, qhov kub siab nyob hauv tib lub xuab zeb nyob rau tib qho xwm txheej, cov xuab zeb xuab zeb muaj zog nyob ntawm seb hom nplaum thiab cov xuab zeb compactness, vim hais tias lub thawv txias yog siab siab tua xuab zeb, xuab zeb ntxhais nruj, Qhov chaw ntawm cov xuab zeb ntawm cov xuab zeb hauv siab yog qhov me me, yog li nws yog ib qho yooj yim los tsim cov leeg lub cev.

(4) kev siv cov xuab zeb tshwj xeeb ① chromite xuab zeb los ntawm cov nyhuv txias los tiv thaiv cov leeg, quartz xuab zeb tuaj yeem tov nrog ib feem pua. ② zirconia refractory siab coefficient ntawm expansion yog tsawg, tab sis tus nqi siab, tsis tshua siv. ③ roasting xuab zeb yog txhuam cov xuab zeb rhiab mus rau 870 ℃ saum toj no, thiab rwb thaiv tsev rau ib lub sijhawm, kom tag nrho nthuav ntawm silica xuab zeb mus rau theem hloov, thiaj li ci cov xuab zeb, tseem hu ua theem hloov xuab zeb. Tom qab hloov cov kev hloov kho, tsis tsuas yog cov nce nqi poob qis qis, thiab cov xuab zeb hauv cov dej ua kua, cov pa phem, carbonates thiab oxides los ntawm kev kub siab tshaj plaws yog kev tshem tawm, yog li ci ntub dej thiab xuab zeb xuab zeb piv rau tsis tsuas noj nqaij Tsawg tus nqi, hlawv roj thiab cov roj tsawg, cov ntsiab lus ntawm cov av nkos, qhov tseem ceeb tshaj yog qhov qis tshaj tawm. Tsis tsuas yog yuav txo tau cov nqi ntawm cov nplaum, ntxiv zoo kom tiv thaiv qhov tuaj pwm lis, kub ntais, nplaum xuab zeb thiab lwm yam kev txhim kho, txhim kho casting tseeb. ④ Baozhu xuab zeb ncig dav hlau yog qhov tsis sib haum, tsis muaj cov rooj sib xyaw convex. Nws muaj kev txav thiab sau zoo, tuaj yeem tau txais ib qho zoo thiab pwm lub zog, collapsibility zoo, yooj yim rau xuab zeb ua haujlwm, siv lwm tus zoo ib yam ntawm cov xuab zeb muaj kev txuag nyiaj ntau dua, kev thermal expansion thiab chrome ore thiab lwm yam tshwj xeeb tib yam li, yog li ntawd, cov khoom ntawm castings siab ntawm qhov chaw dimension, rupture thiab qhov chaw tsis xws luag, casting high yield. Baozhu xuab zeb compactness, siab zog, txawm tias kev siv rov ua dua tseem tawg, yuav txo qhov txheej txheem casting txheej txheem ntawm cov pa paug, zoo dua qub, txo cov pov tseg cov pov tseg, ua rau kev tiv thaiv ib puag ncig. High refractoriness yog qhov tseem ceeb ntawm alumina, refractoriness ≥ 1790 ℃, kom ua tau raws li casting ntawm ntau yam hlau thiab cov phom, yooj yim kom zoo, thiaj li daws qhov kab noj hniav thiab khaus qhov ncauj yog qhov kev xaiv zoo.

(5) lub luag haujlwm ntawm cov coatings tshwj xeeb xim muaj peev xwm ua kom cov solidification iron, feem ntau yog tsim rau cov tsheb castings, yooj yim thiab yooj yim; rau tuab daim ntawm cov nyhuv tsis cuab kev.

(6) anti-veins tshuaj ntxiv rau tam sim no, lub khw muaj ntau hom tshuaj tiv thaiv anti-vegan, raws li cov khoom xyaw yog cov organic thiab inorganic, thawj zaug yog sib xyaw ntawm silicate thiab hlau oxide, nws cov uas tsis tshua muaj melting, thaum kub siab nrog Silica xuab zeb los tsim ib lub cev iav kom puv xuab zeb cij pwm, kom tiv thaiv cov hlau tawg rau hauv cov kab nrawm, qhov khoom siv no tuaj yeem ua rau lub ntsej muag qoob, cov xuab zeb hauv paus zog ntawm me, ntxiv tus nqi 1.0% rau 5.0% ; qhov thib ob yog cov organic additives, Ntxiv tsawg dua 0.3% mus rau 1.5%, cov kev siv ntawm cov feem ntau tshaj qhov pom tseeb thiab cov roj loj.