Halnn CBN inserts in Air-conditioning compressor industry
With the development of the modern technology, more and more manufacturers will pay more attention on the working efficiency and the quality .So how to improve the working efficiency has become an important problem.
In order to realize processing with high efficiency, it need CNC Lathe, process Technology.
For Lathe, more and more suppliers will use CNC Lathe to realize high speed turning;
For Process Technology, every manufacturer will have their own technology to improve their processing efficiency;
For Cutting Tools ,as the most important cutting tools for cut the working allowance to make sure the roughness and the dimension ,the cutting tools is the key sector for realize machining with high efficiency.
The air conditioning compressor work piece materials mainly is gray cast iron, which include upper-bearing ,cylinder, ect. For gray cast iron work piece, we can use traditional carbide insert, but the cutting speed can no more than 350m/min,or it will appear wear phenomenon, which will affect the working efficiency.
With the appearance of the cubic boron nitride,it realize high efficiency turning .The hardness of the cbn insert can arrive HRC95~100, so it has excellent wear resistance, but it has big brittleness. So how to improve the toughness of cbn inserts became the most important problem.
In order to improve the toughness of cbn cutting tools materials, more and more cutting tools manufacturers begin to research new cbn materials. Halnn is the lead brand of cbn inserts, first researched BN-S20 Solid CBN insert which can be used for heavy interrupted turning and BN-K1 CBN insert which used for interrupted roughing high hardness cast iron with large working allowance.
Specific to air-conditional compressor industry, Halnn research new cbn insert materials BNK30 and BN-K20 which can realize processing with high efficiency. Both of them belong to welded cbn insert ,it has more cutting edge and will be more economic ,and has excellent wear resistance .The cutting speed can arrive 1500m/min .Compared with imported pcbn inserts ,Halnn cbn insert has better performance.
The following is the application case of cbn inserts BNK30 and BN-K20 machining air-conditional compressor parts
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Workpiece Materials
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FC200
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Workpiece Hardness
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HB170~210
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Insert Model
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BNK30 WNGA080412
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Cutting Parameters
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Vc=570m/min,Fr=0.25mm/r,ap=2.5mm
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Processing Type
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Wet Cutting
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Processing Efficiency
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Insert Materials
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Cutting Speed
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Productivity
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Insert Lifetime
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Coated Carbide insert
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380m/min
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72 Sec/piece
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100 pieces/tip
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Halnn BNK30
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570m/min
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45 Sec/piece
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500 pieces/tip
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