Deburring by centrifugal barrel tumbling

Technical Report · Sun Aug 01 04:00:00 EDT 1976

DOI:https://doi.org/10.2172/7335722· OSTI ID:7335722

Gillespie, L K

The reliability of small precision mechanisms greatly depends upon the production of burr-free, sharp-edged parts. Centrifugal barrel finishing (Harperizing) is one of the few processes capable of producing these conditions. Burrs less than 0.001-in. thick by 0.001-in. high (25.4 x 25.4 ..mu..m) can be removed from 303 Se stainless steel, 1018 steel, and 6061-T6 aluminum with dimensional changes in the order of 0.0001-in. (2.54 ..mu..m) and final edge radii of 0.003 in. (76.2 ..mu..m). These conditions can be produced in batch lots in 20 minutes or less. Surface finishes can be reduced from 45 to 25 or 35 microinches (1.15 to 0.68 or 0.89 ..mu..m), with 60-minute cycle times. Stock losses appear to be repeatable within +-0.00006 in. (1.524 ..mu..m). Very small parts receive less action than parts 0.5 in. (12.7 mm) in dia.

• Research Organization: Bendix Corp., Kansas City, Mo. (USA)
• DOE Contract Number: E(29-1)-613
• OSTI ID: 7335722
• Report Number(s): BDX-613-1559
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101 -- Metals & Alloys-- Preparation & Fabrication
42 ENGINEERING
420200* -- Engineering-- Facilities
Equipment
& Techniques
ALLOYS
ALUMINIUM ALLOYS
CHROMIUM ALLOYS
CORROSION RESISTANT ALLOYS
FABRICATION
IRON ALLOYS
IRON BASE ALLOYS
MACHINE PARTS
STAINLESS STEELS
STEELS
SURFACE FINISHING