Wear-resistant part mainly have high hardness Cast iron Pump and Manganese steel Industry

Pump Industry

Component: Slurry Pump (Impurities pumps, mud pumps, water pumps), impeller, liner, Cylinder liner,etc

Materials: Cr15Mo3, Cr15Mo2Cu, KmTBCr12, Cr20, Cr26 High Chromium alloy cast iron, white cast iron
Selected CBN Grade: BN-K1 Solid CBN Insert

Advantages: High hardness, high strength, perfect balance of wear and impact toughness
Common Insert Types: SNMN1204, SNMN1207, CNMN1204, CNMN1207, RNMN1204, RNMN1207

Matching tool holder: CSRNR/L,CCLNR/L,CRGNR/L

Recommend inserts

RNMN/RNGN	SNMN/SNGN	CNMN/CNGN

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 body
	Material: High-chromium white cast iron Cr26(Hardness HRC60)
	Insert Type: BN-K1 SNGN120712
	Cutting parameters: Vc=75m/min, Fr=0.12mm/r, ap=2.5mm
	Processing method: dry cutting
	Insert grade	Tool Life/edge	Efficiency
	Halnn BN-K1 CBN inserts	85pcs	Improved 3 Times
	Some Ceramic Inserts	35pcs	/

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

Workpiece: Slurry Pump impeller
Materials: High chromium cast iron(Hardness HRC58-62)
Insert Type：BN-K1 RNMN120400
Cutting parameters：Vc=50m/min, Fr=0.25mm/r, ap=2.5mm
Processing method: Heavy Interrupt dry Turning
Insert grade	Tool Life/edge	Failure mode
Halnn BN-K1	2pcs	Normal wear
Some brand CBN	<1pcs	Damage rupture

High manganese steel is a commonly used wear-resistant steel in machinery industry, these wear parts usually have excellent performance: high strength, high toughness,high wear resistance, but the machinability of high manganese steel is poor,it mainly has the following difficulties:

(1) Plastic deformation, severe processing hardening;

(2) Large plasticity, easily to form BUE;

(3) Large cutting force, high toughness, not easy to break.

(4) Due to the large cutting force, the unit cutting power increases, the heat generated per unit time and high manganese steel itself poor thermal conductivity, the cutting zone temperature up to 1000 ℃, severe tool wear, tool life is low.

For these, Halnn tools has launched BN-K1 and BN-S20 grade solid CBN inserts, excellent fracture resistance, doubled production efficiency; N times longer than traditional tool life

High Manganese steel Industry

Recommend inserts

RNMN/RNGN	SNMN/SNGN

Common Insert Types: SNMN150716, RNMN200800

Halnn CBN Grade:

BN-K1(0701): Excellent toughness, wear resistance not well

BN-K1(0308): balance performance

BN-S20 & BN-S200(small inserts), Excellent wear resistance, toughness not well

Recommend Cutting Parameters:

Roughing: ap=5-6mm; Fr=0.4-0.6mm/r; Vc=45-75m/min

Finishing: ap=1-2mm; Fr=0.3-0.5mm/r; Vc=60-100m/min

Application cases

	Workpiece: Crushing Cone
	Material: High Manganese steel
	Insert Type: BN-K1 SNMN150716
	Cutting parameters: ap=7.5mm, Fr=0.5mm/r, Vc=65m/min
	Processing method: dry cutting
	Insert grade	Cutting speed	Cutting Depth	Tool Life/edge
	Halnn BN-K1 CBN	65m/min	7.5mm	2pcs
	Carbide Insert	19m/min	3.5mm	0.5pcs

Workpiece: Crushing Cone
Material: High Manganese steel
Insert Type: BN-K1 SNMN150716
Cutting parameters: ap=6mm, Fr=0.6mm/r, Vc=50-75m/min
Processing method: dry cutting
Insert grade	Cutting speed	Efficiency	Tool Life/edge
Halnn BN-K1	50-75m/min	45min/pcs	2pcs
Carbide Insert	10m/min	270min/pcs	0.5pcs