Specifications

1coal cutter picks
2 hardness of rotary knife :45HRC,
3 otary knife roughness:25 J/cm
4Tensile strength>1250Mpa,Yield>1050Mpa

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We supply various of cutter picks used in foundation drilling roatary drilling,trenching,tunneling,mining,ect

Description

1 The parameters of the body:

Hardness of the body 45 +/- 5 HRC

Body toughness > 25J/cm*cm

Tensile strength RM >1250 Mpa

Yield Re >1050Mpa

2 Parameters of cemented carbide Q12.5

Diameter of 19.5 +/- 0.5 mm

Hardness of HV32 >1010HV30

The shape of cylindrical carbide 

The minimum length of 30mm carbide 

Depth coverage of solder joining surfaces of  the cemented cemented carbide inserts with stainless steel knife min 90%

3 protection of the knife:

Expandable sleeve

4 cutters 19.5 of the contract at issue are intended for use in underground mining with 'A' 'b' "c" methane explosion hazard 

and the excavation of coal dust class A and B explosion hazard