The scheme of cutting tools of hard turning gear after heat treatment
1. Continuous turning:Turning the gears inner bore and gear shaft instead of grinding,cutting state:continuous cutting,Dry cut.As followed picture:
CBN Inserts used for continuous cutting:BN-H10 grade PCBN hard cutting tools,Characteristic:Suit for high-speed contiuous cutting,has a balance between abrasion resistance and fracture damage resistance,can obtain cutting roughness within Ra0.4 , tools.
Inserts grade used for continuous cutting:BN-H11 grade PCBN hard turning tools, Characteristic:have more quantity CBN cutting edges,more economical cost.
Cutting parameter:Linear spees Vc=120-230m/min;Fn=0.06-0.25mm/r;cut depth ap=0.15;dry cut.
2. Interrupted cutting:when the gear end face has group hole or there is oil hole in the gear inner hole point,interrupted finishing machining is necessary after treatment,the insert need has a excellent fracture resistance and chipping resistance performance,this condition usually choose BN-H20 and BN-H21 grade CBN insert.
BN-H20 grade CBN insert for interrupted cutting:medium-interrupted cutting tools,economical cutting,linear speed Vc=100-180m/min,Fn=0.07-0.15mm/r,picture as BN-H11structure.
BN-H21 grade CBN insert for interrupted cutting:strong interrupted cutting tools,structure as BN-H10;has a better impact resistance toughness performance,suit for interrupted cutting hardened steel parts with hardness higher than HRC55.
BN-H21 grade CBN insert for interrupted cutting:strong interrupted cutting tools,structure as BN-H10;has a better impact resistance toughness performance,suit for interrupted cutting hardened steel parts with hardness higher than HRC55.
3. Cutting with big margin or roughing after treatment:
BN-S20 grade solid PCBN insert for roughing machine with big margin or strong interrupted machine the hard steel:Halnn superhard company non-metallic adhesive CBN insert,can rough and interrupted machine the quenched part. unilateral back engagement ap can reach 7.5mm,used for repairing mold,improve process efficiency by unilateral back engagement with turning instead of rough grinding.economic cutting linear speed Vc=90-150m/min,Fr=0.1-0.45mm/r.Picture:
Remark:economic linear speed is the most economical cutting speed range which actual measurement by hard turning lathe.you can adjust according to the lathe rigidity and process tact.
Halnn superhard PCBN hard turning inserts common field:
1. Gear and gear shaft after quenching,turning instead of grinding,common type:
BN=H10 CNGA120408 ,CNGA120404,
1. Gear and gear shaft after quenching,turning instead of grinding,common type:
BN=H10 CNGA120408 ,CNGA120404,
BN-H20 WNGA080408,
BN-H20 WNGA080404,
BN-H10 VNGA160404,
BN-H20 VNGA160408,
BN-H20 DNGA150408,etc.
2. Finish processing hardened steel roll:
RNGN120400 BN-S20;
SNGN120408 BN-S20,
SNGN120412 BN-S20,
CNGN120408 BN-S20.
3. Bearing industry,turning instead of grinding:
SNGN120712 BN-S20,
RNGN090300BN-S200 etc.
4.Other parts such as process industry of mold after quenching.
Introduction of Halnn hard turning insert brand
1. Unique localization brand of CBN insert industry
2. The most famous insert brand manufacturer for hard materials processing industry
3. ‘Tailored’ type service
4. Specialized in the insert product and project design of high hardness cutting and high-speed cutting industry
5. More professional and efficiency
1. Unique localization brand of CBN insert industry
2. The most famous insert brand manufacturer for hard materials processing industry
3. ‘Tailored’ type service
4. Specialized in the insert product and project design of high hardness cutting and high-speed cutting industry
5. More professional and efficiency
The summary of relevant knowledge to PCBN hard turning tools:
The hardness of PCBN(cubic boron nitride) insert is about HV3000~5000,equal to HRC95-100,it is most economic for high-speed processing the high hardness quenched parts to reduce the cost.Recently,PCBN insert is the best tools material with highest wear resistance in processing ferrous metal ,PCBN(cubic boron nitride) inserts lifetime is 5-20 times longer than carbide insert and ceramic insert,with the development of research,PCBN insert suit for processing kind of high hardness material,BN-K10 grade PCBN insert researched by Halnn,can process the tungsten carbide with hardness more than HRC70,it is the first company research in China.Meanwhile PCBN insert has a high brittleness relative to carbide insert,Halnn superhard research the PCBN insert which can suit for interrupted cutting and rough process aimed at this weakness.Such as BN-S20 grade insert,this cutting tools can not only interrupted cutting hardened steel but also can cut off the parts hardened lay with big margin,and without damaging the inserts wear resistant layer,this is the biggest characteristic than the market common PCBN insert,the balance between wear resistance and impact resistance is the reason which make Halnn brand famous in the world,Halnn has a high reputation,Halnn superhard present ‘Tailored’ type service to the customer.
The hardness of PCBN(cubic boron nitride) insert is about HV3000~5000,equal to HRC95-100,it is most economic for high-speed processing the high hardness quenched parts to reduce the cost.Recently,PCBN insert is the best tools material with highest wear resistance in processing ferrous metal ,PCBN(cubic boron nitride) inserts lifetime is 5-20 times longer than carbide insert and ceramic insert,with the development of research,PCBN insert suit for processing kind of high hardness material,BN-K10 grade PCBN insert researched by Halnn,can process the tungsten carbide with hardness more than HRC70,it is the first company research in China.Meanwhile PCBN insert has a high brittleness relative to carbide insert,Halnn superhard research the PCBN insert which can suit for interrupted cutting and rough process aimed at this weakness.Such as BN-S20 grade insert,this cutting tools can not only interrupted cutting hardened steel but also can cut off the parts hardened lay with big margin,and without damaging the inserts wear resistant layer,this is the biggest characteristic than the market common PCBN insert,the balance between wear resistance and impact resistance is the reason which make Halnn brand famous in the world,Halnn has a high reputation,Halnn superhard present ‘Tailored’ type service to the customer.
More information,http://www.halnntools.com/ ,Or contact with us halnntools@gmail.com ,whatsapp:+8615036165377,skype:cbn_inserts_angels
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