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进气蜗壳是增压器中重要部件之一,要求铸件不充许出现影响强度和使用性能的铸造缺陷,在冷却水腔进行水压试验5kg/cm~2、历时5分钟不得渗漏,铸件壁厚的公差是-2～+3mm范围,并力求做到内腔尺寸不变。
Air intake volute is one of the important components in the turbocharger. It is required that the castings do not allow casting defects that affect the strength and serviceability. Water pressure test in the cooling water chamber is carried out at 5kg / cm ~ 2 for 5 minutes, Casting wall thickness tolerance is -2 ~ +3 mm range, and strive to achieve the same lumen size.