Micro-boron CBN tool for efficient cutting of superhard materials

On December 17, 2009, the British representative office of Micro Boron Technology Co., Ltd. held the “Micro Boron CBN Tool Live Demonstration” and “The First Dealer Conference” at the Engineering Training Center of School of Mechanical Engineering, East China University of Science and Technology, Shanghai. Industry experts and the media have witnessed the outstanding performance of micro-boron CBN tools in cutting superhard materials. The demonstration lathe is the SL50 of Nantong Machine Tool Plant. The cutting parts are bearing shell and gray cast iron pulley.

1. Parts: bearing housing (outer diameter 214mm, hole diameter 190mm, total length 200mm)
Material: GCr15
Hardness: HRC58-62

Micro boron CBN blade: CNMA090408
Machining: roughing the outer diameter surface of the part. There are six irregular grooves on the surface, the depth is about 0.5mm, and the length is the total length of the parts.
Cutting parameters:
Vc = 200-240 m / min
F = 0.20 mm / rev
Ap = 1 mm

Micro Boron CBN Blade: CNMA090404
Processing: Finishing the outer circle
Cutting parameters:
Vc = 200 m / min
F = 0.8-0.12 mm / rev
Ap = 0.05-0.15 mm
Surface roughness after cutting is Ra=0.371μm

2. Parts: Pulley (outer diameter 200mm, thickness 40 mm)
Material: Gray cast iron
Hardness: HB170-230

Micro boron PCBN blade: CNMN120408
Processing: fine/rough turning outer circle
Cutting parameters:
Vc = 1570 m / min
F = 0.20 mm / rev
Ap = 2 mm
Surface roughness after cutting is Ra=0.31μm

Obviously, when the micro-boron CBN is processed into a super-hard material (hardness HRC60 or more after heat treatment) and a casting, even if the surface of the part is irregular, its high impact resistance can be excellently cut and can be achieved. The requirements of the grinding.

After the demonstration was completed, all the dealers, industry experts and audiences present were impressed by the high-precision, high-efficiency cutting exhibited by the micro boron CBN tool. Micro-boron technology also said that the pursuit of more efficient cutting is the goal of micro-boron people. They are willing to work hard with the industry to promote efficient cutting of metal processing.

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