Study on Durability improvement of Cutter-bits

Kazunobu SHIMURA; Yoshiharu KIRITANI; Norio MITANI; Kazunari KAWAI

doi:10.11532/journalte1991.4.101

PROCEEDINGS OF TUNNEL ENGINEERING, JSCE

Online ISSN : 1884-9091
ISSN-L : 1345-0832

Study on Durability improvement of Cutter-bits

Kazunobu SHIMURA, Yoshiharu KIRITANI, Norio MITANI, Kazunari KAWAI

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Keywords: shield machine, cutter bits, cemented carbide tip, shank, durability, shock resistance, abrasion resisitance

JOURNAL FREE ACCESS

1994 Volume 4 Pages 101-108

DOI https://doi.org/10.11532/journalte1991.4.101

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Abstract

The paper introduced the newly developed cutter bits with shock resistance and abrasion resistance.
Cemented carbide tip which has high hardness with high transverse rupture strength is used as a part of the cutter bits to improve durability. Shape of tip, embed manner and weld manner of tip-shank is also studied as well as tip material itself so as to improve the shock resistance. Data analysis from site explicates sufficient shock resistance and abrasion resistance.

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