光沢度測定によるダイカスト金型の離型剤皮膜厚さの評価
1991 年 41 巻 1 号 p. 49-54
詳細
1991 年 41 巻 1 号 p. 49-54
It has been confirmed that the amount of water-base lubricant can be evaluated measuring the glossiness of the die surface. The relation between spraying conditions and lubricant film formation is discussed. The results show that die temperature has the greatest effect on the amount of deposited lubricant. The lubricant film is not formed when the die temperature is higher than 300°C. It is found, however, that normal lubricant film can be formed at temperature higher than 300°C by choosing proper spraying conditions, viz. spray time, spray distance, spray quantity, type of nozzle and lubricant concentration. It is also found that the measurement of die surface glossiness is one of the best ways of evaluating optimum spraying conditions.
