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| Application of Cleanliness Verification of Inner Cavity Surface on Aero Engine Parts |
| Received:February 26, 2019 Revised:March 30, 2019 |
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| DOI：10.7643/issn.1672-9242.2019.08.020 |
| KeyWord:cleanliness verification aero-engine hard particle |
| Author | Institution |
| ZHAO Yong-gang |
Shenyang Liming AERO-Engine Corporation Ltd, Shenyang , China |
| SHI Cheng-chen |
Shenyang Liming AERO-Engine Corporation Ltd, Shenyang , China |
| ZENG Xiao-li |
Shenyang Liming AERO-Engine Corporation Ltd, Shenyang , China |
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| Abstract: |
| Objective Toverify the cleanliness level on the inner cavity surface of stainless steel parts. Methods The inner cavity surface of stainless steel parts were washed with pre-cleaning and washing high pressure water jet. The inner surface was washed continuously under dedicated tooling until there was no impurity visually on the filter screen at the bottom of cleaning tank. The cleaning solution was collected for cleanliness verification. The collected cleaning solution was filtered with 3 μm filter paper. Results The weight of impurity was 1.5 mg with analytical balance, and the size of hard particles was less than 0.1mm under metallographic microscope. Conclusion Class C level of cleanliness can be archived by above method for inner cavity surface on stainless steel parts. |
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