Rough cutting Gray Cast Iron Brake Drum / Disc with Halnn Tools CBN Tip

Rough cutting Gray Cast Iron Brake Drum / Disc with Halnn Tools CBN Tip

1. Halnn Tools CBN Tips High speed Machining Grey Cast Iron Brake Drum

In previous times, people adopt common lathe and carbide insert to machine brake

disc, the process is roughing-semi-finishing-finishing. With the improved requirement on the surface quality and the production qty, they change the common lathe to CNC Lathe, but the carbide insert can’t machine with high cutting speed, they also can’t improve the efficiency, so they will choose other insert materials to satisfy the CNC lathe. CBN Insert became their right choice.

2. Why we Choose Halnn Tools CBN Tips High speed Machining Grey Cast Iron Brake Drum

Gray cast iron has low hardness and can be processed by traditional carbide tools. But why choose a CBN inserts that is more expensive than traditional carbide tools?

Gray cast iron material is mainly used in machine tools, automobiles and other industries. Most of the parts are mass-produced, which requires high production efficiency. Although traditional carbide tools can also process gray cast iron, the processing efficiency is low and only suitable for small batch production. , or occasionally processing gray cast iron parts.

3.CBN Tip Characteristics

5.Detailed Data of WNGA CBN Tip

Type	Dimension					Standard Chamfer	Grades
	L(mm)	φI.C(mm)	φd(mm)	S(mm)	r(mm)		BNK30	BN-S300	BN-S20	BN-S200
WNGA080404	8.7	12.7	5.16	4.76	0.4	S01015 S01020 S02020 S02025	●	●	●	●
WNGA080408	8.7	12.7	5.16	4.76	0.8		●	●	●	●
WNGA080412	8.7	12.7	5.16	4.76	1.2		●	●	●	●

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6.Application Case

As shown in the figure, the processing effect of Halnn solid CBN inserts---BN-S300 CBN grade finishing gray cast iron brake disc end face.

Machining workpiece: brake disc

Processing: Finishing

Processing part: end face (brake surface)

Tool number: BN-S300 SCGN090408

Machining method: double CBN inserts processing end face at the same time

Cutting parameters: Cutting depth (ap)=0.25mm,

Feed rate(Fr)=0.2mm/r,

Cutting speed(Vc)=800m/min

Processing method: dry cutting

Processing effect: compared with coated carbide inserts, the results are as follows

Tool material	Inserts type	Line speed	Single edge life
Halnn BN-S300 CBN grade inserts	SCGN090408	800m/min	300pcs/edge
coated carbide inserts	CNMG120408	300m/min	15pcs/edge

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7. Our service

Zhengzhou Halnn Superhard Materials Co., Ltd is a high-tech enterprise specializing in the production of ultra-hardened tools, and the leader of professional hard material processing tools in China and the first to research new cutting tools specific for gray cast iron, kinds of wear-resistant steel/cast steel, hardened steel materials.

The predecessor of Halnn Superhard Material Co.,Ltd is Henan Superhard Material Institute which is the earliest to make research on processing the brittle and hard materials with cubic boron nitride tools and High-Grade Diamond Tools. As the pioneer of Industry tools in China, Halnn adhere to the initial business philosophy of "Not seeking large and complete, only insist high-precision and professional". With more than 10 years experience, Halnn has researched one by one new materials grade, new technology and become the most famous cutting tools brand in superhard cutting tools industry.