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Phenolic resin rau cov khoom tsim
Phenolic resin rau foundry Cov koob no yog thermoplastic phenolic resin nrog daj flakes los yog grannulars, tus cwj pwm hauv qab no: 1. Cov resin muaj zog thiab qhov sib ntxiv yog me me, uas tuaj yeem txo tus nqi. 2. Tsawg roj tsim, txo cov casting porosity tsis xws luag thiab txhim kho yield. 3. Cov resin muaj zoo flowability, yooj yim filming, thiab filling tsis muaj lub kaum sab xis tuag. 4. Tsis tshua muaj phenol dawb, txo cov pa phem ib puag ncig thiab txhim kho kev ua haujlwm ntawm cov neeg ua haujlwm. 5. Kev...
