Tk Machining
- View government funding actions
- Hamilton, OH 45013
- Estimated Number of Employees: 1
- Estimated Annual Receipts: $600,000
Sampling of Federal Government Funding Actions/Set Asides
In order by amount of set aside monies.
- $4,800 - Friday the 10th of July 2015
National Aeronautics And Space Administration
JOHNSON SPACE CENTER
IGF::OT::IGF THIS PROCUREMENT CONSISTED OF THE MACHINING OF HD3 TEST SECTION AND HD3 CLOSEOUT PARTS, AND THE PARTS ARE BEING PURCHASED FOR EP, PROPULSION AND POWER DIVISION. NASA IS PURCHASING THE INTERNAL AND EXTERNAL COMPONENTS OF A LIQUID METHANE VAPORIZATION EXPERIMENT. THESE TWO CUSTOM MACHINED STAINLESS STEEL PARTS ARE DESIGNED TO FIT TOGETHER, AND WHEN BRAZED INTO ONE PART, WILL CREATE A SEALED HIGH-FLOW HEAT EXCHANGER. THE PRECISION OF THESE PARTS IS OF THE UTMOST IMPORTANT TO THIS EFFORT TO MAINTAIN CONSISTENCY THROUGHOUT THE EXPERIMENT. THE COMPLETED PARTS MUST BE MACHINED TO TIGHT TOLERANCES ON FIT AND FINISH, (<=0.005 TOLERANCE TO MODEL, SURFACE FINISH 125 UINCH IN THE RIBS AND<30 UINCH ELSEWHERE), SO THAT THE EXPERIMENT WILL FUNCTION CORRECTLY. THE PURPOSE OF THE EXPERIMENT IS TO VALIDATE A COMPUTER MODEL THAT WILL BE USED TO DESIGN A FULL-SIZE HEAT EXCHANGER IN THE FUTURE. THE PARTS SHOULD BE MADE OF 304 OR 316 STAINLESS STEEL AND SHOULD BE MADE BY THE SAME VENDOR, SO THAT THE CLOSE FIT CAN BE TESTED DURING MANUFACTURE. THE VENDOR WILL FOLLOW THE COMPUTER AIDED DESIGN DRAWINGS SUPPLIED BY THE NASA PROPULSION AND DIVISION. THE ANALYSIS FOR THIS EXPERIMENT WAS PERFORMED USING A COMPUTER CODE DEVELOPED SPECIFICALLY AT JSC FOR THIS PURPOSE. THE CODE WILL BE MODIFIED TO MATCH THE AS-BUILT PART, SO STRINGENT CONTROL OF THE TOLERANCES AND SURFACE FINISH ARE NOT AS IMPORTANT AS DETERMINING THE AS-BUILT DIMENSIONS. THESE PARTS COULD BE MANUFACTURED IN A VARIETY OF MEANS, AND THE PROPULSION. MILLING THE PARTS FROM A SOLID BLOCK IS PREFERRED BUT CASTING THE PART WITH POST-PROCESS SMOOTHING OR USING ADDITIVE MANUFACTURING TO BUILD UP THE PART WITH POST-PROCESS MACHINING ARE ALTERNATIVES. IF MILLING IS NOT CHOSEN AS THE MANUFACTURING METHOD, COUPONS WITH REPRESENTATIVE MATERIAL PROPERTIES NEED TO BE PROVIDED BY THE VENDOR.
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