With the increasing competition in the auto parts industry and the rising prices of the raw material, automobile manufacturers gradually use CNC machine tools to ensure to the production efficiency improvement and total cost reduction to make sure their own competitive advantages.

In order to meet the needs of the auto parts industry to reduce the costs and efficiency, tool industry insist to continuous innovation. Halnn Superhard, as the pioneer in the Superhard tool, developed many cbn inserts grades specific for the auto parts industry, which not only achieve high-speed cutting, improve the production efficiency, but also make sure a high surface finish and long tool life. 

When Processing Automotive parts, common problems that the traditional cutting tool will meet as follows:
(1) Bad Wear resistance;
(2) Easily Chipping;
(3) Too hard to process.

Specific to solve the above problem, Halnn developed a variety of model numbers for processing automotive parts. The typical parts will include Engine Block, Cylinder, Gears and Gears Shaft, Brake Disc and Drum, Clutch and Pulley, ect. We will share you all the Solutions with Halnn cbn inserts grades. The grades and corresponding cutting data as follows:

1. Halnn Superhard pcbn inserts BN-H11 and BN-H20 process Hardened Steel Materials Parts
The working conditions of processing Automotive Gears and Gear Shaft are different, so it needs to choose different model numbers cutting tools. As below:

（1） For Continuous turning condition, we recommend to select PCBN Inserts BN-H11 and BN-H10;

（2） For Semi-intermittent turning condition, we recommend to select PCBN Inserts BN-H20;

（3） For heavy interrupted turning condition, we recommend to select PCBN inserts BN-H21

The application case as follows:

BN-H20 PCBN Inserts finish turning Gears
Machining Part：	Gears
Machining Materials:	Gear Steel
Workpiece Hardness:	HRC58~63
Inserts Grade:	BN-H10 CNGA120408
Cutting Type:	Continuous ,Dry Cutting
Cutting Parameters:	ap=0.2mm,Fr=0.1mm/r,Vc=180m/min
Machining Effect
Inserts Materials	Linear Speed(m/min)	Lifetime/cutting dege	Machining Time/pcs
Halnn BN-H10	180	800 pcs	6 S
Ceramic Inserts	130	150 pcs	8.5 S

2. BN-S300 and BNK30 solid cbn inserts processing Gray Cast Iron Parts Automobile Engine Block
Automobile Engine Block are made of gray cast iron, in order to ensure the finish of the engine block, Halnn Superhard research BN-S300 and BNK30 solid cbn inserts materials (as below), mainly used in finishing process.
Halnn superhard solid cbn inserts BN-S300 fine milling engine cylinder block solution (as below):

BN-S300 Solid CBN Inserts fine milling engine cylinder block
Machining Work piece:		Engine Block
Machining Materials:		FC250
Machining Process:		Fine Milling
Machining Part:		End Surface
Insert Model:		BN-S300 SNEN090308
Processing Type:		Dry Cutting
Cutting Parameters:		Vc=1700 m/min, Fz=0.12mm/r,ap=0.3mm
Machining Effect
Insert Materials		Feed Rate	Life per blade	Cutting Fulid or not
Halnn BN-S300		3670m/min	85 pcs	No
Some European Brand		3670m/min	80  pcs	No

3. Halnn Superhard solid cbn inserts BN-S300 processing Automotive Parts engine cylinder liner solution
Since the cylinder liner not only need sufficient strength and rigidity, but also be high temperature, corrosion and wear resistance. It usually adopts boron cast iron as the main material of cylinder linear, Halnn superhard recommend solid cbn inserts BN-S300. Specific processing case as below:

BN-S300 Solid CBN Insert processing  Automotive Parts Engine Cylinder Liner
Machining Process:	Finish Machining
Machining Materials:	Boron Cast iron
Insert Model:	SNGN120412S02020
Machining Condition:	Wet Cutting
Cutting Parameters:	ap=0.5mm,Fr=0.25mm/r,Vc=850m/min
Machining Effect
Insert Materials	Cutting Speed(m/min)	Machining speed	Tool Life/Edge
Halnn BN-S300	850	23s/pcs	120pcs
Ceramic inserts	500	40s/pcs	25pcs

4. Halnn superhard solid cbn inserts BN-S30 processing Brakes, Brake Drum solution
Gray cast iron has better shock absorption and reduces the wear, such as automotive parts brakes and brake drum. In order to obtain work piece surface finish, Halnn recommend solid cbn inserts BN-S30 and BNK30 process brakes disc, brake drums parts, surface finish can be achieved Ra0.6. Cutting tool design shown as below:

BN-S30 Solid CBN Insert machining Brake Disc
Machining parts:		Brake disc
ProcessType:		Roughing and semi-finishing, Dry cutting
Insert Model :		CNMN120716 S03020
Cutting Parameter:		ap=2.5mm;Fr=0.45mm/r;Vc=350m/min
Processing Effect
Insert Materials		Type			Process type
Halnn BN-S30		CNMN120716			Dry cut
Coated Carbide insert		CNMN120412			Wet cut

5.Halnn superhard brazed pcbn inserts BN-K20 finish machining auto parts Belt Pulley solution
Belt pulley is often adopt gray cast iron as the main material, has good shock absorption antifriction. With Halnn superhard pcbn inserts BN-K20 (as below) finish turning belt pulley, it not only improve the processing efficiency, but also reduce the processing costs and the environmental pollution.

BN-K20 PCBN Insert processing belt pulley
Machining Part:		Pulley Belt
Process Type:		Fine finshing
Machining Condition:		Dry cutting
Insert Models:		CNGA120408-4S
Cutting Data:		ap=0.3mm ;Fr=0.25mm/r ;Vc=550-700m/min;
Machining Effect
Insert Materials		Roughness			Single corner life
Halnn BN-K20		Ra0.7-Ra1.6			200pcs/corner
Coated Carbide inserts		Ra1.6-Ra3.2			35pcs/corner