Accession Number:

ADA636648

Title:

Wear Test Results of Candidate Materials for the OK-542 Towed Array Handling Machine Level Winder

Descriptive Note:

Technical memo.

Corporate Author:

NAVAL UNDERSEA WARFARE CENTER NEWPORT DIV NEW LONDON CT NEW LONDON DETACHMENT

Personal Author(s):

Report Date:

1994-12-29

Pagination or Media Count:

42.0

Abstract:

This Technical Memorandum TM reports the findings of a series of wear tests conducted for possible replacement materials for the Towed Array Handling Machine Level Winder Pawl. In the existing system, the Pawl is manufactured from C63000 Nickel-Aluminum-Bronze NiAl-Br and the drive shaft, from C71500 70-30 Copper-Nickel Cu-Ni. The problem under investigation is that of severe wear on the sides of the Pawl occurring within short time periods. A test apparatus was designed and built that simulated operating conditions of the Handling Machine. Speed, loading, environment, and shaft material were designed to match that of the system. Different materials were then selected as candidate Pawl replacements and tested. Materials that were tested consisted of standard and specialty materials. Coating processes were also investigated. The standard materials consisted of 304 and 316 Stainless Steel, Inconel 625, Nickel-Aluminum-Bronze, and Titanium. The specialty materials Inconel 625, Monel, Stainless and Satellite, were clad-welded metals on a base of 1040 Carbon Steel. Finally, an economic carbide coating was deposited on a 316 Stainless Steel and Inconel 625 sample. Within a short time span, from the materials discussed, varied differences in performance were observed and several conclusions were reached. First, the existing material, Nickel-Aluminum-Bronze, was one 2011202 of the worst performers. As a result of the experiment, this sample showed the greatest amount of damage in the shortest period of time. The Inconel 625 bar stock that was tested performed the best. It sustained the least amount of damage for one 1 of the longest durations of the test.

Subject Categories:

  • Coatings, Colorants and Finishes
  • Properties of Metals and Alloys

Distribution Statement:

APPROVED FOR PUBLIC RELEASE