High speed Machining Grey Cast Iron Brake Disc with Halnn Tools RCMX060400Y CBN Tips

1. Halnn Tools CBN Tools Finish Machining Grey Cast Iron Brake Disc

CBN/PCD inserts are the best choice for high speed and precision machining of high hard material, difficult to cut material and cast irons. They can be used for machining abrasive resistance alloy cast iron like brake disc and brake drum; Or machining normal gray cast iron with high speed, like engine cylinder and cover; Or machining alloy cast iron and alloy cast steel, like roller, slurry pump; Or used for machining some tough material such as hardened steel, bearing steel and die steel; They also can be used for machining high temperature alloy like aeroengine.

2. Why we Choose Halnn Tools CBN Tools Finish Machining Grey Cast Iron Brake Disc

Halnn researched 4 type CBN inserts grades specific for machining brake disc which can meet their

Brake disc has low hardness, traditional cutting tools can machine brake disc, but why do the manufacturers also choose CBN inserts which costs higher than traditional cutting tools?

(1) Brake Disc belong to Mass production, it requires high on the production efficiency, traditional cutting tools,such as carbide insert can machine brake disc, but the process efficiency is low. It only suit for small production.

(2) Nowadays most mass production brake disc enterprise, they use CNC Lathe, and many manufacturer know that traditional cutting tools can be used for high speed cutting, when the cutting speed is above 350m/min, the insert will wear rapidly which will affect the production efficiency and the workpiece surface quality.

3.CBN ToolS Characteristics

5.Detailed Data of RCMX CBN inserts

Type	Dimension				Standard Chamfer	Grades
	L(mm)	φI.C(mm)	S(mm)	r(mm)		BN-K1	BN-S20	BN-S200	BN-S300	BN-S10
RCMX060400Y		6.35	4.76		S01020 S02020 S03020 S05020 S10020 S20020	●	●	◎	●	●
RCMX060500Y		6.35	5.56			●	●	◎	●	●
RCMX060600Y		6.35	6.35			●	●	◎	●	●
RCMX060700Y		6.35	7.94			●	●	◎	●	●
RCMX090700Y		9.525	7.94			●	●	◎	●	●
RCMX120700Y		12.7	7.94			●	●	◎	●	●
RCMX151000Y		15.875	10			◎	◎	◎	◎	◎
RCMX191000Y		19.05	10			◎	◎	◎	◎	◎
RCMX201200Y		20	12			◎	◎	◎	◎	◎
RCMX251200Y		25.4	12			◎	◎	◎	◎	◎

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6.Application Case

Item	Brake Drum Manufacturer	Image
Component Materials	GC250 (HT250)
Machining Process	Roughing, Dry Cutting
Hardness	HB170~HB210
Selected insert	CNGN120412
Testing Performance Comparison
Insert Materials	Cutting Parameters	Machining Qty
Halnn BN-S300	Vc=1150,Fr=0.2,ap=0.25	200
Other PCBN	Vc=880,Fr=0.2,ap=0.25	30
The Tool Life of Coating CBN Inserts improved about 30%, And the roughness Kept Ra1.6

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7.Product Certificate

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.