Naval Air Warfare Center Aircraft Division, Contracts Department, Building 129-2, Highway 547, Lakehurst, NJ 08733-5083

J -- METHODS FOR RESTORATION OF CATAPULT TROUGH COVER TRACK CHANNELS SOL N68335-98-RFI-804 DUE 061098 POC Amy Hayward, Code 2131AH, 732-323-2921 Request information on welding methods for the restoration of Catapult Trough Cover Track Channels. During a launch cycle, the shuttle rollers contact both the upper and lower track channel flanges resulting in wear along each surface. Restoration is required to alleviate interference between various catapult components and extend the life of the trough cover. The track channels, which conform to MIL-S-22664, HY 100, are welded to the trough cover body. Restoration will be accomplished by clad welding with Inconel 625 along the horizontal and vertical flange surfaces with a low-distortion welding process. Restoration must not cause any dimensional distortion of the trough covers. Welding and inspection will be in accordance with the requirements of MIL-STD-278 and MIL-STD-271. The minimum final machined thickness for the Inconel 625 is 1/8 inch and the iron content shall not exceed 8 percent at the final machined surface. Stress relieving of the trough cover is prohibited. Respondents to this Request for Information are invited to submit information for thee restoration of Trough Cover Track Channels. The information submitted must include technical description of the method and experience welding Inconel 625 to MIL-S-22664, HY 100 material. Any information may/may not be included in a formal solicitation. The Government will not pay for any information received in response to this RFI nor will the Government compensate any respondent for any costs incurred in developing the information provided to the Government. There is no solicitation package. This is a Request for Information only. (0138)

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