Cov txheej txheem ntawm hloov cov esters tsis muaj roj fatty acids rau hauv (ntau dua) esters saturated los ntawm hydrogenation siv nickel catalyst. Nws yog siv rau hauv kev tsim cov margarine los ntawm cov roj zaub.
txhais li cas los ntawm lub sij hawm hardening?
Hardening yog txheej txheem uas ib yam dab tsi ua nyuaj lossis ua nyuaj. Hardening tuaj yeem xa mus rau: Hardening (metallurgy), txheej txheem siv los ua kom tawv tawv ntawm cov hlau.
roj hardened steel yog dab tsi?
Roj quench hardening yog ib txoj hauv kev rau hardening alloy steel forgings. Nws yog qhov zoo tshaj plaws rau kev ua tiav qhov yuav tsum tau muaj zog thiab hardness zog ntawm ntau cov alloys uas tsis tshua muaj kev pheej hmoo ntawm cracking dua dej los yog polymer quench txheej txheem.
Koj hu li cas roj tawv tawv?
A roj qhuav yog cov roj uas ua rau tawv tawv, tawv tawv tom qab lub sijhawm raug cua, ntawm chav tsev kub. … Cov roj ziab yog ib qho tseem ceeb ntawm cov roj pleev xim thiab qee cov kua roj vanish. Qee cov roj ziab qhuav muaj xws li roj linseed, tung oil, poppy noob roj, perilla roj, thiab roj walnut.
Yuav ua li cas cov hlau hauv qab no yog roj tawv?
Oil-hardening cold-work steels are also known as group O steels uas muaj O1, O2, O6, thiab O7 hom. Cov hlau no muaj cov ntsiab lus siab carbon thiab txaus cov ntsiab lus ntawm cov alloying, yog li ua tau zoo dua hardness thaum roj-quenched. Hom O7 muaj chromium thiabmanganese.
