Research and Development (R&D) on Advanced Nonstructural Materials. Delivery Order 0001: Study of Hydraulic System Component Storage With Operational and Rust-Inhibited Hydraulic Fluids

摘要

In this program, bearings and pistons were stored in jars containing both operational hydraulic fluids (MIL-PRF-83282, MIL-PRF-87257 and MIL-PRF- 5606) and rust inhibited hydraulic fluids containing BSN (MIL-PRF-46170 and MIL- PRF-6083). In addition, hydraulic pumps were filled with MIL-PRF-83282, MIL-PRF- 87257 and MIL-PRF-46170. Jars, containing bearings and pistons, as well as hydraulic pumps were stored for up to 3 years in a laboratory environment to determine if operational fluids would protect them from rusting during storage. After each year, the bearings, pistons, and pumps were inspected for corrosion. At the end of 3 years of storage, pumps were endurance tested using fresh operational fluid, MIL-PRF-83282. The bearings, pistons and pumps showed no rusting for the duration of storage with either operational or storage fluids. The pumps stored with the operational fluids MIL-PRF-83282 and MIL-PRF-87257 were in better condition than the pump stored with the rust inhibited fluid. The operational hydraulic fluids MIL-PRF-83282 and MIL-PRF-87257 provided excellent protection against rusting during storage.