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Title: Chemical unbrazing of cutter carbide tips

Abstract

One of the basic operations in the repair of cutting tools is unbrazing of cutter carbide parts on high-frequency induction units. Analysis showed that unbrazing of cutters on such units does not provide the necessary accuracy and quality of the groove under the carbide tip and consequently, the cutter holders are unsuitable for repeated use without the use of additional machining. The most progressive method of repeated repair of cutting tools is the chemical method of unbrazing with the use of 1.34-1.36% nitric acid. The results of investigation of this method for special and standard cutters showed that the geometric parameters of the holders and the unbrazed tips changed insignificantly. In addition, the depressions for the tips are clean, there are no thermal cracks or warping in the tool holders and the carbide may be repeatedly used, showing an improvement in the surface quality as a result of dissolution of the outer layer of cobalt. This process has made it possible to significantly improve the record keeping of used tools and their receival and sorting and to rationally organize delivery of ferrous metal scrap and scrap carbide.

Authors:
; ; ; ;
Publication Date:
OSTI Identifier:
6583503
Alternate Identifier(s):
OSTI ID: 6583503
Resource Type:
Journal Article
Journal Name:
Chem. Pet. Eng. (Engl. Transl.); (United States)
Additional Journal Information:
Journal Volume: 18:5; Other Information: Translated from Khimicheskoe i Neftyanoe Mashinostroenie, No. 5, pp. 33-34, May 1982
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; BRAZED JOINTS; MATERIALS RECOVERY; CUTTING TOOLS; REPAIR; CARBIDES; COBALT; DISSOLUTION; OPTIMIZATION; RECYCLING; SURFACE PROPERTIES; CARBON COMPOUNDS; ELEMENTS; JOINTS; MANAGEMENT; METALS; PROCESSING; RECOVERY; TOOLS; TRANSITION ELEMENTS; WASTE MANAGEMENT; WASTE PROCESSING; WELDED JOINTS 320302* -- Energy Conservation, Consumption, & Utilization-- Industrial & Agricultural Processes-- Materials

Citation Formats

Ishenderov, I.N., Kerimov, A.M., Maslenikov, V.F., Strel'tsova, S.P., and Zeiniev, F.D. Chemical unbrazing of cutter carbide tips. United States: N. p., 1983. Web.
Ishenderov, I.N., Kerimov, A.M., Maslenikov, V.F., Strel'tsova, S.P., & Zeiniev, F.D. Chemical unbrazing of cutter carbide tips. United States.
Ishenderov, I.N., Kerimov, A.M., Maslenikov, V.F., Strel'tsova, S.P., and Zeiniev, F.D. Sat . "Chemical unbrazing of cutter carbide tips". United States.
@article{osti_6583503,
title = {Chemical unbrazing of cutter carbide tips},
author = {Ishenderov, I.N. and Kerimov, A.M. and Maslenikov, V.F. and Strel'tsova, S.P. and Zeiniev, F.D.},
abstractNote = {One of the basic operations in the repair of cutting tools is unbrazing of cutter carbide parts on high-frequency induction units. Analysis showed that unbrazing of cutters on such units does not provide the necessary accuracy and quality of the groove under the carbide tip and consequently, the cutter holders are unsuitable for repeated use without the use of additional machining. The most progressive method of repeated repair of cutting tools is the chemical method of unbrazing with the use of 1.34-1.36% nitric acid. The results of investigation of this method for special and standard cutters showed that the geometric parameters of the holders and the unbrazed tips changed insignificantly. In addition, the depressions for the tips are clean, there are no thermal cracks or warping in the tool holders and the carbide may be repeatedly used, showing an improvement in the surface quality as a result of dissolution of the outer layer of cobalt. This process has made it possible to significantly improve the record keeping of used tools and their receival and sorting and to rationally organize delivery of ferrous metal scrap and scrap carbide.},
doi = {},
journal = {Chem. Pet. Eng. (Engl. Transl.); (United States)},
number = ,
volume = 18:5,
place = {United States},
year = {1983},
month = {1}
}