Air-conditioning compressor is the most important machine which used for adjust the temperature in modern times, so how to improve the working efficiency to reduce the costs and make sure the quality at the same time is the most important problems that the manufacturers need to consider.
The cutting tools, as one of the most important tools to make sure the product quality and working efficiency, play an important role in manufacturing process. So select the most suitable cutting tools becomes a very important thing.
The air-conditioning compressor parts are mainly made of gray cast iron. Specific to these gray cast iron parts, Halnn researched corresponding cbn inserts grades BNK30 and BN-K20 with high processing efficiency, the cutting speed can be 3~4 times more than carbide alloy insert and the tool life will improve several times. The following will share the insert models and the corresponding cutting data.
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Insert Grade
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Machining Hardness
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Machining Type
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Machining Area
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Machining Materials
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Cutting Speed Vc(m/min)
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Depth of Cut ap(mm)
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Feed Rate f(mm/r)
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BNK30
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HB170~HB230
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Finshing
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Continuous Turning
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Gray Cast Iron
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300~1500
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≤1
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0.05~0.3
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BN-K20
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HB170~HB230
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Finishing
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Continuous
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Gray Cast Iron
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300~1500
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≤1
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0.05~0.3
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The Gray Cast Iron Parts include Cylinder, Upper Bearings, CrankShaft and other parts.
The Cylinder usually require high precision on the inner bore, end surface and the grooves. Halnn BN-K20 pcbn inserts are mainly for finish turning process, and will have high precision. The following will share one of the application case:
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BN-K20 PCBN Insert Processing Cylinder
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Machining Process:
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Continuous cutting
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Machining Part:
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Cylinder
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Machining Materials:
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Gray Cast Iron
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Materials Hardness:
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HB170~HB210
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Insert Model:
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BN-K20 WNGA080412
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Machining Condition:
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Wet Cutting
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Cutting Parameters:
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ap=2mm,Fr=0.2mm/r,Vc=400m/min
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Machining Effect
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Cutting tools material
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Cutting Speed Vc(m/min)
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Productivity
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Tool Life/Edge
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Halnn BN-K20
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400
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37 s/piece
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80 pcs
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Coated Carbide Insert
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260
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58 s/piece
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20 pcs
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We also have other application case on processing air-conditioning parts, such as Upper Bearings and Crankshaft, If you would like to know more, please click