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Jan 05, 2026

Plhaub lub zog tsis txaus thiab nruj thiab sib haum rau kev txhawb nqa thiab tswj kev ntsuas

Thaumpeev casting, lub plhaub tsis txaus lub zog thiab qhov tawv tuaj yeem ua rau muaj teeb meem cuam tshuam rau kev ua haujlwm zoo, kev ruaj ntseg ntau lawm, thiab kev ua haujlwm zoo. Precise reinforcement thiab tswj kev ntsuas yuav tsum tau tsim rau cov teeb meem sib txawv los xyuas kom meej qhov ruaj khov ntawm cov casting thaum lub sij hawm solidification. Cov hauv qab no yog cov teeb meem tshwj xeeb thiab cov kev daws teeb meem sib xws:


I. Cov teeb meem tseem ceeb thiab kev tswj xyuas zoo

 

1. Teeb meem: Sib tsoo / tawg thaum lub sij hawm nchuav

 

Tswj Kev Ntsuas: Hauv kev xaiv cov khoom, ua qhov tseem ceeb siab - ntom ntom, siab - lub zog refractory aggregates (xws li 99% dawb corundum, graded mullite xuab zeb), ua ke nrog nano- qib silica sol binder, thiab ntxiv silane coupling agents los txhim kho lub zog sib txuas; nyob rau hauv lub plhaub- ua cov txheej txheem, ua kom cov txheej txheem rov qab (nce mus rau 6-8 txheej rau cov txheej txheem loj / loj), xyuas kom txhua txheej txheej txheej tsis sib xws thiab cov xuab zeb yog densely thov, tsis txhob coating voids; Thaum lub sij hawm tua hluav taws, nruj me ntsis ua raws li ib tug maj mam cua sov nkhaus, tswj cov cua kub ntawm 50-80℃/ h, thiab tswj kub siab rau 1-3 teev kom huv si tshem tawm cov residual organic teeb meem, txhim kho lub plhaub ntom, thiab tsis txhob thermal stress cracks tshwm sim los ntawm ceev cua sov thiab txias.

 

2. Teeb meem: Poob qhov tseeb qhov tseeb ntawm castings

 

Tswj Kev Ntsuas: Tswj ciab pwm qhov tseeb ntawm qhov chaw, siv cov khoom siv qis -shrinkage wax (shrinkage rate Tsawg dua los yog sib npaug li 0.8%), stabilizing wax txhaj tshuaj tsis tu ncua thiab ua qhov kub thiab txias kev laus; Thaum lub plhaub ua, siv cov txheej txheem gradient txheej, nrog lub ntsej muag nyias nyias (thickness 0.2-0.3mm), thiab maj mam nce lub thickness ntawm lub nraub qaum txheej thaum ua kom txaus kom qhuav ntawm txhua txheej (qhuav nyob rau hauv qhov kub thiab av noo ib puag ncig, ziab lub sij hawm ntau dua los yog sib npaug li 4 teev rau txhua txheej), kom tsis txhob muaj kev ntxhov siab los ntawm cov plhaub tsis txaus. rau cov castings loj, iav fiber ntau cov ntaub ntawv tuaj yeem muab ntxiv rau hauv qab txheej txhawm rau txhim kho tag nrho cov rigidity ntawm lub plhaub, thaum tswj qhov sib xws ntawm tag nrho lub plhaub phab ntsa tuab kom txo tau kev ntxhov siab.

 

What Types of Parts is Investment Casting Suitable For?

 

3. Teeb meem: Nto thiab sab hauv tsis xws luag hauv castings (burrs, txias kaw, xuab zeb inclusions, slag inclusions, thiab lwm yam)

 

Tswj Kev Ntsuas: Rau qhov tsis xws luag, siv nplua -grained refractory aggregate (320-400 mesh zircon hmoov) rau txheej txheej, ua ke nrog high-purity silica sol slurry. Tswj lub slurry viscosity rau 18-22s (siv Ford Cup No. 4), thiab maj mam nqa cov pwm thaum lub sij hawm dipping (ceev 5-10 cm / s) kom tsis txhob muaj npuas; rau cov xuab zeb thiab slag suav nrog, ntxiv dag zog rau lub plhaub tua hluav taws thiab ntxuav cov txheej txheem kom ua tiav kev tshem tawm cov khoom seem thiab cov organic. Preheat lub plhaub pwm ua ntej nchuav (600-900 degree) kom txo qhov kub ntawm qhov sib txawv ntawm cov hlau molten thiab pwm plhaub, tiv thaiv cov txheej txheej ntawm pwm plhaub los ntawm tev tawm thiab sib tov nrog cov hlau molten; optimize lub sealing system kom ntseeg tau tias cov kav dej tsis muaj kev cuam tshuam thiab tig mus rau hauv qab, tiv thaiv cov kua nplaum thiab corrosion ntawm sealing nto, uas tuaj yeem ua rau lub zog txo qis.

 

4. Teeb meem: Kev ua tsis tiav hauv kev tsim cov txheej txheem nyuaj / loj castings

 

Tswj Kev Ntsuas: Rau cov txheej txheem nyuaj (xws li cov grooves nqaim thiab nyias-cov qauv phab ntsa), txais yuav "kev cai plhaub- ua cov tswv yim." Siv tsawg-viscosity slurry nyob rau hauv qhov chaw nqaim los txhim kho kev nkag mus, thiab nce cov txheej txheej txheej hauv nyias- cov phab ntsa los yog siv cov hlua txuas ntxiv rau kev txhawb nqa; rau loj castings, optimize lub puab plhaub qauv tsim, siv ib tug segmented plhaub- ua + tag nrho cov txheej txheem los ua ke kom txo tau tag nrho cov kev nyuaj siab. Siv siab-lub zog tshav kub-resistant alloy steel xuab zeb raws li cov ntaub ntawv rov qab los txhim kho kev thauj khoom-cov kabmob muaj peev xwm; Tom qab tua hluav taws, ntxiv qis{11}}kev kho qhov kub thiab txias (500-600℃rau 1 teev) kom tshem tawm cov thermal stress thiab ntxiv dag zog rau cov pwm plhaub rigidity.

 

5. Cov teeb meem: nce kev tsim khoom thiab cov nqi

 

Tswj Kev Ntsuas: Tsim kom muaj ib qho ua ntej- tsim pwm plhaub zoo kuaj tshuab. Kev tshuaj ntsuam pwm tsim nyog los ntawm kev ntsuas lub zog compressive (yuav tsum tau muaj chav kub compressive zog Ntau dua lossis sib npaug ntawm 2.5 MPa) thiab ntsuas kub rigidity, tshem tawm cov khoom tsis muaj zog; tsim ib lub plhaub txheem txheej txheem- ua cov txheej txheem phau ntawv, qhia qhov sib piv ntawm txheej txheej, tus naj npawb ntawm cov txheej txheej txheej, ziab thiab tua hluav taws tsis zoo rau ntau hom castings, zam tsis ruaj tsis khov pwm plhaub zoo vim cov txheej txheem hloov pauv; ua me me-batch sim casting ua ntej loj ntau lawm kom optimize lub puab plhaub ntxiv zog txoj kev npaj thiab txo cov kev pheej hmoo ntawm seem nyob rau hauv loj- teev ntau lawm.

 

II. Cov Ntsiab Cai General ntawm Plhaub Reinforcement

 

Txawm hais tias qhov teeb meem tshwj xeeb, lub plhaub lub plhaub yuav tsum ua raws li cov hauv paus ntsiab lus ntawm "cov ntaub ntawv tsim nyog + kev tswj cov txheej txheem meej + kev ruaj ntseg zoo los ntawm qhov pib": kev xaiv cov khoom yuav tsum phim qhov loj me, qhov nyuaj, thiab qhov kub thiab txias; cov txheej txheem tswj xyuas qhov kev ruaj ntseg ntawm cov khoom siv thoob plaws hauv tag nrho cov txheej txheem txheej, ziab, thiab tua hluav taws; thiab cov kev pheej hmoo raug txo qis ua ntej los ntawm kev ua ntej- kev sim ntau lawm thiab kev sim ua haujlwm, yog li txhim kho lub plhaub lub zog thiab nruj los ntawm qhov chaw thiab ua kom cov khoom zoo thiab kev ua haujlwm zoo.

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