When manufacturing die casting mold, generally, the casting layout design should be considered based on the relation between injection system, casting condition, gate system, and cooling system. Also, the extent or the location of product defects were dif

When manufacturing die casting mold, generally, the casting layout design should be considered based on the relation between injection systems, casting condition, gating system, and cooling system. Also, the extent or the location of product defects will be differentiated according to the various relations of the above conditions. High-qualified products can be manufactured as those defects are controled by the proper modifications or the changes of die casting mold with the conditions. In this research, the proper manufacturing method intensively be derived for reducing the defect of the internal porosities issues of power steering which is very complicated to achieve the mold design, and for minimizing and for guaranteeing the product quality through the analysis of the problem of casting parts and the deduction of alternative plans.

진공예냉장치에서 상대습도변화 및 냉각온도변화에 따른 야채류의 온도변화에 대하여 고찰한 논문이다. 실험장치는 진공챔버, 이젝트펌프, 냉동기장치, 계측장치 및 냉각수 계통으로 구성되어 있다. 실험결과 야채류의 냉각속도는 야채류의 함수율에 크게 의존하고 있으며, 함수율이 높은 야채가 낮은 야채에 비하여 냉각속도가 증가하는 것을 알 수 있다.