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2 432 229

(13)

(51)

IPC

B22F5/10(2006-01-01)

B23K26/00(2006-01-01)

B22F3/12(2006-01-01)

B22F3/24(2006-01-01)

B22F7/04(2006-01-01)

B26F1/28(2006-01-01)

(21) (22)

Application

2009146947/02, 2009-12-18

(24)

Start date

2009-12-18

(22)

Actual filing date

2009-12-18

(45)

Published

2011-10-27

(72)

Inventor

Polushin Nikolaj IvanovichSorokin Evgenij Nikolaevich

(73)

Holder

Federal'Noe Gosudarstvennoe Obrazovatel'Noe Uchrezhdenie Vysshego Professional'Nogo Obrazovanija Issledovatel'Skij Tekhnologicheskij Universitet

METHOD OF PRODUCING DIAMOND DRILLING TOOL Russian patent published in 2011 - IPC B22F5/10 B23K26/00 B22F3/12 B22F3/24 B22F7/04 B26F1/28

Abstract RU 2432229 C2

FIELD: process engineering.

SUBSTANCE: invention relates to powder metallurgy, particularly, to method of fabrication of diamond drilling tool comprising stem with working layer and axial coolant passage bore. Proposed method comprises moulding and heat treating of mix material arranged in mould and containing diamond powder and metal binder powder, and making bore in working layer. Note here that working layer is briquetted and welded to stem. Coolant bore is drilled by laser or electric spark.

EFFECT: higher hardness of tool.

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RU 2 432 229 C2

Authors

Polushin Nikolaj Ivanovich

Sorokin Evgenij Nikolaevich

Dates

2011-10-27—Published

2009-12-18—Filed