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HIGH-SPEED MILLING OF NICKEL-BASED SUPERALLOYS
Tools
UNSPECIFIED (1992) HIGH-SPEED MILLING OF NICKEL-BASED SUPERALLOYS. In: 7TH CONF OF THE IRISH MANUFACTURING COMMITTEE ON ADVANCED MANUFACTURING TECHNOLOGY, UNIV DUBLIN, TRINITY COLL, DUBLIN, IRELAND, AUG 29-31, 1990. Published in: JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 33 (4). pp. 429-437. ISSN 0924-0136.
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Abstract
The use of the recently developed 70-degrees bevel cutter with tangentially arranged positively raked carbide inserts (P40 grade) has led to the use of higher cutting conditions than those employed when milling the nickel-based nimonic 75 alloy with a 45-degrees approach-angle cutter having negatively raked carbide inserts. This paper discusses the results obtained with different cutter/insert combinations when machining nickel alloys under various cutting conditions. The K20 grade of cemented-carbide tools out-performed the K40 grade when milling with a 45-degrees approach-angle cutter due to their improved properties. Chipping and/or fracture of the tool edges were the dominant failure modes under most of the conditions tested, these being caused by a combination of high temperature and high thermal and mechanical stress, as well as adhesion of the work material on the tool rake-face during milling. Tool fracture can be caused also by attritional wear and thermal cracking mainly at the high temperatures usually generated under high cutting conditions. The positive cutter/insert combination results in a smooth cutting action, lesser power consumption and a very good surface finish.
Item Type: | Conference Item (UNSPECIFIED) | ||||
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Subjects: | T Technology T Technology > TS Manufactures T Technology > TA Engineering (General). Civil engineering (General) |
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Journal or Publication Title: | JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | ||||
Publisher: | ELSEVIER SCIENCE SA LAUSANNE | ||||
ISSN: | 0924-0136 | ||||
Official Date: | September 1992 | ||||
Dates: |
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Volume: | 33 | ||||
Number: | 4 | ||||
Number of Pages: | 9 | ||||
Page Range: | pp. 429-437 | ||||
Publication Status: | Published | ||||
Title of Event: | 7TH CONF OF THE IRISH MANUFACTURING COMMITTEE ON ADVANCED MANUFACTURING TECHNOLOGY | ||||
Location of Event: | UNIV DUBLIN, TRINITY COLL, DUBLIN, IRELAND | ||||
Date(s) of Event: | AUG 29-31, 1990 |
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