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Phenolic resin pazinthu zoyambira
Phenolic resin for foundry Mndandanda uwu ndi thermoplastic phenolic resin ndi flakes chikasu kapena granulars, yodziwika motere: 1. Utomoni uli ndi mphamvu zambiri ndipo kuchuluka kwa kuwonjezera ndi kochepa, komwe kungachepetse mtengo. 2. Kutsika kwa gasi, kuchepetsa kuponyera zolakwika za porosity ndikuwonjezera zokolola. 3. Utoto umakhala ndi kuyenda bwino, kujambula kosavuta, ndikudzaza popanda ngodya yakufa. 4. Phenol yaulere yotsika, imachepetsa kuwononga chilengedwe komanso kukonza malo ogwira ntchito a ogwira ntchito. 5. Fasten...
