With the development of science and technology, Construction machinery is also constantly improving, the processing efficiency and accuracy of the main parts is getting higher and higher, which also make a huge challenge for cutting tools. Halnn Superhard, as the superhard tool leader, always commit to continuously developing new cutting tools to meet the customers’ requirements. For the construction machinery industry, Halnn superhard also have different cbn tool material grades, the specific grades and the corresponding parameters as follows:
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Insert Grade
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Machining Hardness
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Processing Condition
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Machining Materials
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Machining Type
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Cutting Speed Vc(m/min)
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Depth of Cut(mm)
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Feed Rate Fr(mm/r)
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BN-S20
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HRC45~68
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Roughing
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50~200
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0.5~10
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0.15~0.1
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Semi-finishing
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60~250
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≤1
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0.05~0.35
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BN-H21
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HRC62~68
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Fine Finishing
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60~250
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≤0.5
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0.05~0.35
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BN-H10
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HRC45~68
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Fine Finishing
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60~250
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≤1
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0.05~0.35
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BN-H20
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HRC45~63
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Fine Finishing
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60~180
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≤1
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0.05~0.35
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BN-H11
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HRC45~63
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Fine Finishing
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90~200
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≤1
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0.05~0.35
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The following will share you one applicaiton case for processing the ball screw:
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BN-S20 Solid CBN Inserts processing the ball screw
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Machining Part：
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Ball Screw
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Machining Materials:
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42Cr12Mo or GCr15
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Workpiece Hardness:
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HRC60~62
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Inserts Grade:
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BN-S20 SNGN09404
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Cutting Type:
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Dry Cutting
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Cutting Parameters:
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ap=4.5mm,Fr=0.10mm/r,Vc=90m/min
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Testing Result
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Inserts Materials
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Linear Speed(m/min)
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Cutting Depth (mm)
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Failure mode
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Halnn BN-S20
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90
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4.5
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Normal wear
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Carbide inserts
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65
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0.5
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Chipping
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