Finishing Brake Drum with DNML CBN Cutting Tools Cubic Boron Nitride Inserts

1. Halnn Tools CBN Tips Semi-Finishing Grey Cast Iron Brake Drum

With the increasingly fierce competition in the brake drum industry, tool materials in the process of rough brake drums must not only ensure high surface quality, but also achieve high-speed cutting, improve production efficiency, reduce production costs, and improve the company's Self-competitive. At this time, the CBN inserts BN-S300 grade is selected, which can easily realize high-speed cutting, and ensure product quality and reduce production cost.

2. Why we Choose Halnn Tools CBN Tips Semi-Finishing Grey Cast Iron Brake Drum

With the prevalence of CNC machine tools, more and more CNC machine tools are used for mass production enterprises. Traditional tools can no longer meet the performance, efficiency and quality requirements of enterprises, so superhard tools will replace traditional tool processing more and more. gray cast iron.

For example, Halnn superhard tool BN-S30 grade roughing pressure vessel flange adopts SNMN120712 model, cutting parameters are: speed=450,Cutting depth (ap)=3mm,Feed rate (Fr)=0.5mm/r. Dry cutting, a cutting edge of 410 pieces, an inserts with 8 cutting edges, equivalent to an inserts processing 3280 pieces of flange. Can see its tool strength.

Not only the superhard tool BN-S30 brand has been added significantly, but also the superhard tool BN-K20 grade finishing gray cast iron parts have also been approved by users. For example, WNGA080408-6S is used to process the braking surface and the mouth part without cracks. Appeared, the number of workpieces processed exceeded 300 other PCBN inserts, and the roughness reached Ra1.0.

3.CBN Turning Tools Characteristics

5.Detailed Data of CNMO CBN Turning Tools

Type	Dimension				Standard Chamfer	Grades
	L(mm)	φI.C(mm)	S(mm)	r(mm)		BNK30	BN-S300	BN-S20	BN-S200
CNMO120704	12.9	12.7	7.94	0.4	S02020		●
CNMO120708	12.9	12.7	7.94	0.8			●
CNMO120712	12.9	12.7	7.94	1.2			●

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6.Application Case

Compared to coated carbide inserts: the cutting speed of the Halnn superhard BN-S300 grade CBN insert is 2.8 times that of the coated tool, and the feed rate is 2 times, the tool life is 15 times for the coated tool.

Tool material	Feed Rate Fr (mm / r)	Cutting Speed (Vc) (m/min)	Tool life
Halnn superhard BN-S300 grade	0.9	280	75 pieces / edge
Coated carbide insert	0.45	100	5pieces / 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.