No.	Rolls Materials	Hardness	No.	Rolls Materials	Hardness
1	High Ni-Cr Cast Iron Rolls	HSD76~82	6	Tungsten Carbide Rings	HRA88
2	High Chrome Cast Iron Rolls	HSD72~82	7	High Speed Steel Rolls (HSS Rolls)	HSD82~90
3	Chilled Cast Iron Rolls(ICDP)	HSD50~70	8	Forged Steel Rolls	HSD92~105
4	High Chrome Cast Steel Rolls	HSD68~75	9	Semi-Steel Rolls	HSD55~65
5	High Carbon Semi-Steel Rolls	HSD65~72

2.Halnn CBN Grade for Machining Cast Iron Rolls

Insert Grade

Machining Type

Typical Application

Insert Image

BN-K1

Roughing

High Chrome cast iron rolls/Chilled Cast Iron Rolls/High Chrome Alloy Cast Iron Rolls/Alloy Cast Iron Rolls/high hardness cast iron rolls

Solid CBN Insert

3. Cutting Paramters for Machining Cast Iron Rolls with Halnn Solid CBN Inserts

Normally Cast Iron rolls includes high chrome cast iron rolls, chilled cast iron rolls, high chrome alloy cast iron rolls, alloy cast iron rolls and other high hardness cast iron rolls.

No.	Rolls Materials	Hardness	Select Halnn CBN Inserts	Vc(m/min)	Machining Type	ap(m/min)	Fr(mm/r)
1	Cast Iron Rolls	HSD60~80	BN-K1	35~120	Roughing	1~10	0.15~0.7
1	Cast Iron Rolls	HSD60~80	BN-K1	60~180	Finishing	≤1.0	0.05~0.35

4. Application Case

Halnn BN-K1 Solid CBN Inserts machining High Nickel Chrome cast iron Rolls
Materials	High Chrome Cast Iron, HSD80
Selected Halnn CBN Inserts	BN-K1
Cutting Condition	ap=9mm, Fr=0.5mm/r,Vc=35m/min
Comparable Efficiency
Halnn BN-K1	Carbide Inserts
Improved 3 times	/

5.Common Models RCGX/RCMX solid cbn inserts for machining cast iron rolls

RCGX/RCMX-Y Solid CBN Inserts
Type	Dimension				Standard Chamfer	Grades	Corresponding tool holder
Type	L(mm)	φI.C(mm)	S(mm)	r(mm)	Standard Chamfer	BN-K1	Corresponding tool holder
RCMX060400Y	6	6.35	4.76		S01020 S02020 S03020 S05020 S10020 S20020	●	CRDCN
RCMX060500Y	6	6.35	5.56			●
RCMX060600Y	6	6.35	6.35			●
RCMX060700Y	6	6.35	7.94			●
RCMX090700Y	9	9.525	7.94			●
RCMX120700Y	12	12.7	7.94			●
RCMX151000Y	15	15.875	10			◎
RCMX191000Y	19	19.05	10			◎
RCMX201200Y	20	20	12			◎
RCMX251200Y	25	25.4	12			◎

RCGX/RCMX-V Solid CBN Inserts
Type	Dimension					Standard Chamfer	Grades	Corresponding tool holder
Type	L(mm)	φI.C(mm)	S(mm)	r(mm)	b(mm)	Standard Chamfer	BN-K1	Corresponding tool holder
RCMX060400V	6	6.35	4.76		0.8	S01020 S02020 S03020 S05020 S10020 S20020	●	CRDCN
RCMX060500V	6	6.35	5.56		0.8		●
RCMX060600V	6	6.35	6.35		0.8		●
RCMX090700V	9	9.525	7.94		1		●
RCMX120700V	12	12.7	7.94		2		●
RCMX151000V	15	15.875	10		2		●
RCMX191000V	19	19.05	10		2		●
RCMX201200V	20	20	12		2		●
RCMX251200V	25	25.4	12		2		●

6. Typical Application

We can offer you all products on different machining condition: such as Rough machining Cylindrical,hole turning, milling,heavy turning, turning groove, and roll repairing.

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