DRILL BIT FOR DRILLING AND METHOD FOR MANUFACTURING SAME

Title:

DRILL BIT FOR DRILLING AND METHOD FOR MANUFACTURING SAME

Document Type and Number:

WIPO Patent Application WO/2016/064083

Kind Code:

A1

Abstract:

Disclosed are a drill bit for drilling and a method for manufacturing same, in which the strength of a body part of a shank can be selectively improved by performing rapid cooling in a forced cooling method after performing rapid heating selectively only on the body part of the shank in a high-frequency induction heating method after completing infiltration.

Inventors:

KIM KI-HO (KR)
YUN JUN-YONG (KR)

Application Number:

PCT/KR2015/009086

Publication Date:

April 28, 2016

Filing Date:

August 28, 2015

Export Citation:

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Assignee:

EHWA DIAMOND IND CO LTD (KR)

International Classes:

E21B10/02; B23P5/00; C21D9/22; E21B10/46

Foreign References:

JPH0913863A	1997-01-14
JP2004002968A	2004-01-08
KR20110104516A	2011-09-22
JP2011256421A	2011-12-22
KR100939462B1	2010-01-29

Attorney, Agent or Firm:

DAE-A INTELLECTUAL PROPERTY CONSULTING (KR)
특허법인 대아 (KR)

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