サクションロールき裂検査装置の開発
1986 年 40 巻 11 号 p. 1011-1015
詳細
1986 年 40 巻 11 号 p. 1011-1015
In the paper making industry, higher speed process is required for improvement of the productivity. This means the requirement of more exellent suction roll shells with higher resistance to corrosion fatigue strength and more elongated survice life.
From point of view mensioned above, an introduce of non-destructive inspection on suction roll shells is strongly expected for conformation of the continuous operation.
We have developed a new device by using eddy current testing method for monitoring suction roll shells.
This paper is summarized as follows.
1) Principle of this method and outlines of the device
2) Characteristics of the method and measuring procedure
3) Examples of application
4) Recommendation
a) Inspection of cracks at initial stage on drill-hole surface and vicinity of the hole inside suction roll shells is applicable with every certain intervals by this device.
b) Monitoring of crack propergation in the works.
