The time from pattern removal to coating, different drying methods and coatings will have different effects on strength of core.
砂芯脱盒至浸涂料的放置时间、浸涂料后不同的干燥方法及不同涂料对砂芯的强度都有不同程度的影响。
2
The results indicated that high C3S cement had higher strength and less drying shrinkage and can largely utilize fly ash (up to 40% of fly ash may be added).
结果表明，高c3s水泥具有较高的强度和较小的干缩，可大量利用粉煤灰(掺量可达40%)。
3
Film properties including surface drying time, luster value, shock strength, adhesion and flexibility were tested according to standard methods for coating.