Thaum tsim thiab khaws cia hauv cov txheej txheem thev naus laus zis, tsim nyogFoundry Txheej BinderCov ntaub ntawv cov yeeb yaj kiab uas muaj qhov yooj yim thiab ruaj khov tom qab ziab, thiab cov kab nrib pleb yuav tsis tshwm sim yooj yim. Txheej txheej tawg yog tsis tshua muaj cov khoom lag luam tsis zoo ntawm cov binder nws tus kheej, tab sis qhov teeb meem thib ob tshwm sim los ntawm kev tsim kho tsis raug, kev faib ua feem thiab qhov chaw kho. Thaum lub sij hawm tsim cov qauv, kev ua kom zoo tshwj xeeb yog ua los ntawm cov yeeb yaj kiab- ua haujlwm ntawm Foundry Coating Binder kom txo qis kom qhuav thiab txhim kho txheej yooj yim thiab adhesion. Nws tuaj yeem hloov kho rau cov yam ntxwv ntawm cov pwm thiab cov cores thiab tsim ntom ntom, hloov tau thiab tawg -cov yeeb yaj kiab tiv thaiv dawb tom qab ziab.
Plaub yam tseem ceeb ua rau txheej txheej tawg tom qab ziab. Ua ntej, ntau txheej txheej thickness. Ib qho txhuam tuab ua rau qhov tsis sib xws hauv thiab sab nraud kom qhuav nrawm thaum tsim cov yeeb yaj kiab. Qhov saum npoo hardens sai heev, thaum ya raws thiab cov kuab tshuaj nyob rau hauv volatilize maj mam. Tsim shrinkage kev ntxhov siab rub cov txheej sib nrug thiab ua cov kab nrib pleb. Txheej tuab thiab rov txhuam dua yam tsis ua tiav kom qhuav ua rau muaj kev pheej hmoo tawg. Thib ob, qhov chaw ziab khaub ncaws tsis zoo. High - kub raug, huab cua kub ncaj qha tshuab thiab cua muaj zog ua kom lub cev qhuav dej thiab ziab, ua kom qis qis thiab ua kom muaj kev ntxhov siab kom ua rau tawg. Kev ziab qeeb qeeb hauv qhov kub thiab av noo siab tiv thaiv cov txheej txheem ua kom tiav thiab tuaj yeem ua rau cov kab nrib pleb rov qab nyob rau theem tom ntej.
Thib peb, tsis yog - txheej txheem kev faib ua feem. Randomly nce qhov ntau npaum ntawm Foundry Txheej Binder nqa cov ntsiab lus ntawm txheej txheej txheej, txo qhov yoog raws thiab txhim kho brittleness, ua rau shrinkage tawg tsis tuaj yeem tom qab ziab. Kev sib xyaw tsis sib xws ntawm cov coatings thiab cov binders ua rau cov khoom tsis sib haum xeeb hauv zos. Qhov sib txawv shrinkage coefficients thoob plaws cheeb tsam txheej ua rau ib nrab tawg thiab tev. Plaub, teeb meem substrate. Cov pwm qhuav ntau dhau los yog qhov chaw tseem ceeb uas npog nrog cov plua plav thiab qhov porosity txawv txav ua rau tsis sib xws txheej adhesion. Kev ntxhov siab tsis sib npaug tshwm sim thaum ziab thiab ua rau tawg qhov tsis xws luag.
Ib qho kev ntsuas yuav tsum raug coj los ua kom tsis txhob tawg kom huv. Siv cov txheej nyias nyias, thiab ua cov txhuam hniav tom qab tsuas yog tom qab txheej dhau los qhuav tag. Tsis txhob ultra- kub, muaj zog cua thiab ziab sai sai; txais yuav cov huab cua ntuj - ziab lossis qis- qhov kub thiab txias kom qhuav. Npaj cov ntaub ntawv nruj me ntsis raws li cov chaw tsim khoom pom zoo proportions thiab ua kom txaus stirring. Tshem plua plav thiab impurities los ntawm substrate nto ua ntej kev tsim kho thiab tswj kom zoo substrate ya raws. Raws li cov qauv kev lag luam, cov yeeb yaj kiab qhuav tsim los ntawm Foundry Coating Binder yog ua tiav thiab ntom ntom nrog qhov yooj yim txaus. Cov yeeb yaj kiab tuaj yeem tiv thaiv qhov cuam tshuam thaum lub sij hawm siab - kub pouring yam tsis muaj cracking lossis tev, lav qhov zoo ntawm castings.
