Turning Cast Iron inserts

Full name: Turning Cast Iron CBN inserts, Solid CBN inserts

Machining Hardness Range: HRC35-HRC68

Machining Materials: high chromium cast iron, nickel hard cast iron, high nickel chromium alloy, chilled cast iron, white cast iron, gray cast iron, etc.;

Machining Type: Grinding instead of Turning, Roughing, Semi-Finishing and Finishing

Continuous and interrupted processing possible

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Product Description

Recommend cast iron CBN inserts


RNMN/RNGN	SNMN/SNGN	CNMN/CNGN	RCMX-V	RCGX-Y	SCGN

TNGA	CNGA	WNGA

Performance advantages:

High hardness;

Good wear resistance and chipping resistance;

Excellent impact resistance and fracture resistance;

High cutting efficiency and long tool life;

Application fields

Materials: high chromium cast iron, nickel hard cast iron, high nickel chromium alloy, chilled cast iron, white cast iron, gray cast iron, etc.;

Industries: Metallurgical Rolls, Cement building materials machinery, Power Equipment, automotive industry, Mining machinery etc.;

Workpieces: Slurry pump, Impeller, Roll, Liner, Cone Crusher, brake discs, brake drums, pulleys, air-conditioning compressors, etc.

Cutting Parameters

Machining material	Recommended cutting parameters			CBN insert Grade
Machining material	Cutting speed VC(m/min)	Cutting Depth ap (mm)	Feed Rate Fr(mm/r)	CBN insert Grade
High hardness cast iron (HRC35-68)	35-120(Roughing)	1-10	0.15-0.8	BN-K1
High hardness cast iron (HRC35-68)	60-180(Finishing)	≤1	0.05-0.35	BN-K1
Grey cast iron	400-1200(Roughing)	1-10	0.2-1	BN-S30, BN-S300
	600-2000(Finishing)	≤1	0.05-0.3	BN-S30, BN-S300
	300-1500(Finishing)	≤1	0.05-0.3	BN-K20, BNK30

Application cases

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=75m/min, Fr=0.12mm/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

Workpiece Material: High Chromium alloy cast iron
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	Cutting Width	Failure mode
Halnn BN-K1	500mm	Normal wear
Some brand CBN	150mm	Damage rupture

Workpiece: Rolls
Materials: Chilled cast iron (Hardness HSD67)
Insert Type：BN-K1 RNMN120400/CNMN1207
Cutting parameters：ap=2mm, Fr=0.5mm/r, Vc=66m/min
Processing method: Dry Turning
Insert grade	Efficiency	Life time
Halnn BN-K1	Improved 2times	3 times
Carbide Insert	/	/

Workpiece: Brake drum
Material: Gray cast iron
Insert Type: BNK30 WNGA080408
Cutting parameters: Vc=650m/min, Fr=0.2mm/r, ap=0.5mm
Processing method: dry cutting
Insert grade	Tool Life/edge	Roughness
Halnn BNK30	120pcs	Ra1.6
Some brand CBN	70pcs	Ra2.0

Workpiece: Bear of air conditioner compressor
Material: Gray cast iron
Insert Type: BNK30 WNGA080408
Cutting parameters: Vc=600m/min, Fr=0.25mm/r, ap=0.3mm
Processing method: dry cutting
Insert grade	Cutting Speed	Tool Life/edge
Halnn BNK30	600m/min	500pcs
Coated carbide inserts	330m/min	80pcs

Workpiece: Pulley
Material: Gray cast iron
Insert Type: BN-K20 CNGA120408
Cutting parameters: Vc=550-700m/min, Fr=0.25mm/r, ap=0.3mm
Processing method: dry cutting
Insert grade	Roughness	Tool Life/edge
Halnn BNK20	Ra1.6	200pcs
Some brand CBN	Ra3.2	35pcs

Workpiece: Brake Disc
Material: Gray cast iron
Insert Type: BN-S300 SCGN090408
Cutting parameters: Vc=800m/min, Fr=0.2mm/r, ap=0.25mm
Processing method: dry cutting
Insert grade	Insert Type	Cutting Speed	Tool Life/edge
Halnn BN-S300	SCGN090408	800m/min	300pcs
Coated carbide inserts	CNMG120408	300m/min	15pcs

Workpiece: Brake Disc
Material: Gray cast iron(HT250)
Hardness: HB170~210
Insert Type: BN-S30 CNMN120712
Cutting parameters: Vc=500m/min, Fr=0.55mm/r, ap=2mm
Processing method: dry cutting
Insert grade	Cutting Speed	Tool Life/edge	Efficiency
Halnn BN-S30	500m/min	200pcs	Improved 1.8 times
Carbide Insert	180m/min	30pcs	------

Workpiece: Brake Drum
Material: Gray cast iron(HT250)
Hardness: HB170~210
Insert Type: BN-S30 CNMN120716
Cutting parameters: Vc=380/min, Fr=0.65mm/r, ap=2.5mm
Processing method: dry cutting
Insert grade	Cutting Speed	Tool Life/edge	Efficiency
Halnn BN-S30	380m/min	95pcs	Improved 1.5 times
Coated Carbide Insert	150m/min	15pcs	------