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Ready mixed bonds for core drills

Also for core drills the expectations on the metal powder bonds are varying. Free cutting i.e. speed is always required especially in the construction industry. The typical side stress, which often occurs during drilling, requires a bond with a very high ductility. For most applications the matrix must be easy to braze, however, we are now also getting more and more inquiries for core drill powders to be laser welded.

 

Bond

Main component

Hardness

Density (g/cm³)

Hot pressing range (°C)

Cold pressability

Application

Sintering data

V5-881

Cu, Co

85 HRB

8,72

760

good

glass drilling

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Diamix-C20

Fe, Cu, Co

91 HRB

8,13

760 - 780

medium

concrete, granite, can be also used dry

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Diabase-V21B

Fe, Cu, Co

90 - 95 HRB

7,95

820 - 860

medium

concrete, granite

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V10-881

Co, Cu

100 HRB

8,75

820 - 860

good

granite, hard stone, concrete, can be also used dry

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V22-799

Co, Bz

101 HRB

8,82

780 - 860

good

concrete, granite

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V23-801

Co

101 HRB

8,77

820 - 980

good

concrete, granite

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BD-126

Co

101 - 102 HRB

8,70

940 - 980

medium

granite, concrete

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BD-11

Co

106 HRB

8,77

780 - 860

good

concrete, granite, can be also used dry

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V14-315

WC, Co, Cu

44 HRC

10,66

900 - 940

medium

asphalt, geen concrete, limestone, abrasive natural stone

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V23-300

WC, Co, Bz

50 HRC

11,76

980 - 1020

medium

asphalt, green concrete, abrasive natural stone

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Laser weldable backing for core drills