Sib tsoo nrog abrasives raws li cov cuab yeej yog ib txoj hauv kev tseem ceeb hauv cov txheej txheem kev siv tshuab, thiab nws yog qhov yooj yim tshaj plaws thiab nyiam ua cov txheej txheem rau kev ua tiav thiab kev ua tiav super, thiab siv dav hauv kev lag luam. Resin sib tsoo cov cuab yeej yog ib feem tseem ceeb ntawm abrasives thiab yog ib qho ntawm cov cuab yeej sib tsoo tseem ceeb rau kev siv ntau lawm.
Kab lus no tsuas yog qhia txog cov teeb meem tshwm sim hauv kev tsim cov khoom sib tsoo log thiab cov kev daws teeb meem sib xws.
Kev sib tham ntawm cov laj thawj rau qhov tsis ruaj khov ntawm cov khoom sib tsoo log:
Ntau yam teeb meem zoo yuav tshwm sim nyob rau hauv cov txheej txheem ntawm cov khoom sib tsoo log. Txij li thaum tsim cov khoom sib tsoo cov log sib koom ua ke ntawm kev sib koom ua ke ntawm cov khoom sib xyaw, cov laj thawj yog qhov nyuaj thiab ntau heev.
Cov teeb meem raw khoom:
Resin sib tsoo lub log yog cov txheej txheem nyuaj uas muaj ntau yam ntawm cov khoom tseem ceeb thiab cov khoom siv raw. Raws li ntev raws li cov ntaub ntawv yog abrasives thiab binders, cov ntaub ntawv pab muaj xws li fillers, reinforcing cov ntaub ntawv, colorants, thiab lwm yam.
1. Abrasive yam:
Qhov zoo ntawm abrasives ntawm kev ua lag luam yog qhov tsis sib xws, feem ntau tshwm sim raws li hauv qab no:
(1) Cov tshuaj muaj pes tsawg leeg ntawm cov abrasive feem ntau tsim nyog, tab sis lub cev tsis zoo; feem ntau manifested nyob rau hauv qhov sib txawv ntawm bulk ntom ntawm abrasive thiab txawv teb chaws lub teb chaws.
(2) Cov particle loj muaj pes tsawg leeg ntawm cov abrasive yog chaotic thiab txawv heev ntawm cov kev cai ntawm tus qauv: Qhov no yog feem ntau yog reflected nyob rau hauv qhov sib txawv ntawm cov ntsiab lus particle ntawm abrasives ntawm tib particle loj thiab cov teb chaws txawv teb chaws.
2. Nyob rau hauv cov nqe lus ntawm binders, nws yog tsuas yog phenolic resin:
(1) Qhov teeb meem ntawm resin zoo stability, tshwj xeeb tshaj yog cov qib ntawm phenol dawb cov ntsiab lus nyob rau hauv resin. Cov ntsiab lus pub dawb phenol ntau dhau yuav ua rau kom cov resin tawg tom qab lub pob zeb sib tsoo lub log yog rhuab thiab tawv, cuam tshuam lub zog ntawm kev sib tsoo log;
(2) Qhov sib xws ntawm kev sib xyaw cov hmoov nplej thiab urotropine. Raws li ib tug hardener rau cov resin, yog hais tias tus nqi ntawm urotropine ntxiv yog tsis txaus, cov resin yuav tsis tag nrho hardened, cuam tshuam lub zog thiab hardness ntawm lub sib tsoo log; Yog hais tias cov ntsiab lus siab dhau lawm, cov urotropine ntau dhau yuav tsis ua ke nrog cov resin, decompose thiab volatilize thaum lub sij hawm hardening txheej txheem, nce lub pores ntawm lub sib tsoo log, thiab txo nws lub zog thiab hardness.
(3) Lub binder particle loj yog ntxhib dhau los yog zoo heev:
Nws yog feem ntau ntseeg hais tias qhov loj me me ntawm cov binder yuav tsum zoo, uas yog qhov tsim nyog rau kev faib tawm ntawm cov binder. Yog hais tias qhov luaj li cas yog ntxhib heev, cov khoom siv molding tsis yooj yim rau kev sib xyaw ua ke, cuam tshuam rau hardness thiab lub zog ntawm kev sib tsoo log. Txawm hais tias rau coarse-grained resin hlais txiav log thiab cymbal sib tsoo lub log, qhov loj me ntawm cov ntawv xaiv (cov hmoov nplej) yuav tsum zoo dua 320 #. Txawm li cas los xij, yog tias qhov loj me ntawm cov phenolic resin hmoov zoo dhau lawm, nws yuav nyuaj rau kev pub cov khoom siv thiab nws yuav nyuaj rau kev ua tiav kev sib xyaw ntawm cov sib tov, uas yuav cuam tshuam rau kev txiav thiab sib tsoo kev ua haujlwm ntawm cov pob zeb sib tsoo.
