Halnn Solid CBN inserts turning slurry pump

Slurry pump the high chromium cast iron material has relatively high hardness. Halnn BN-K1 grade is prefect. it can turn the slurry pump body with a large margin, and intermittently turn the slurry pump impeller, etc. It better solves the problem of tool breakage and rapid wear when the tool is turning slurry pump.

Advantages of Halnn BN-K1 grade CBN inserts

High hardness: its hardness is as high as 8000-9000HV, second only to diamond.

Good thermal stability: The thermal stability of BN-K1 grade is much higher than that of diamond. Synthetic diamond begins to carbonize at 800 ℃ in the air, while BN-K1 grade can still be cut at 1300 ℃, and there is no phase change even at 1500 ℃.

High chemical inertness: Like ceramic tools, BN-K1 grade has the characteristics of high chemical inertness. When the temperature is as high as 1200-1300 ℃, it is not easy to chemically react with ferroalloy materials.

Halnn BN-K1 grade CBN insert for Interrupted machining HRC60-68 high hardness cast iron machine parameters

Rough turning: ap=1-10mm, Vc=90-150m/min, Fr=0.15-0.25mm/r

Application case

	Workpiece: Slurry pump body
	Material: Cr26(Hardness HRC60)
	Insert Type: BN-K1 CNMN120712
	Cutting parameters: Vc=75m/min, Fr=0.12mm/r, ap=2.5mm
	Processing method: dry cutting
	Insert grade	Tool Life/edge	Failure mode
	Halnn BN-K1 CBN inserts	85pcs	Normal wear
	Some brand CBN	35pcs	Damage rupture

Workpiece: Slurry Pump impeller
Materials: High chromium cast iron Cr26(Hardness HRC60)
Insert Type：BN-K1 SNMN120712
Cutting parameters：Vc=45m/min, Fr=0.25mm/r, ap=2.5mm
Processing method: Heavy Interrupt dry Turning
Insert grade	Tool Life/edge	Failure mode
Halnn BN-K1	11pcs	Normal wear
Some brand CBN	3pcs	Damage rupture