products

INTRODUCTION OF THE CASTING STEEL & ROLLS
MATERIAL	SYMBOL	SHORE HARDNESS	A P P L I C A T I O N S
CLEAR CHILL CAST IRON	AC-1 AC-2 DH.AC	65-70 68-75 75-85	COLD ROLLED STEEL SHEET OR NON-METAL THIN PLATES FLOUR, RUBBER, PAINT, PAPER MAKING ROLLS HOT ROLLED OR PRECISION ROLLED STEEL PLATE, SECTION STEEL, STEEL BAR, WIRE, SECTION STEEL BAR AND STRAIGHTENING ROLLER.
INDEFINITE CHILL CASTIRON	G-1 G-2 G H	53-63 63-73 73-85	3-STEP HOT ROLLED STEEL PLATE, 4-STEP OR 2-STEP HOT ROLLED STEEL ROLLS, HOT ROLLED STEEL RE-BAR, WIRE, HOT PRECISION ROLLED SECTION STEEL, STEEL BAR, HOT ROLLED STEEL PLATE, STEEL SHEETS, STEEL ROLLS, COLD ROLLED STEEL MACHINES.
DUCTILE CHILL CAST	ADC-1 ADC-2 ADC-4 DH.AD	50-62 60-65 65-75 75-83	BIG STEEL FILLET AND BLACK STEEL FILLET HOT ROLLING, NON-FERROUS COLD ROLLED STEEL FILLET. HOT ROUGH ROLLED STEEL SHEETS, SECTION STEEL, STEEL RE-BAR AND WIRES HOT INTERMEDIATE AND PRECISION ROLLING OF MATERIAL MENTIONED ABOVE. 2,3,4 STEP STEEL SHEET AND STEEL ROLL HOT ROLLING WORKS, H SECTION STEEL TRIMMING HOT ROLLING.
IRONCHROME CAST IRON	HC-1 HC-1	70-80 80-90	4-STEP STEEL SHEET AND STEEL ROLL HOT ROLLING ROLL WIRES AND SMALL SIZE ANGLE IRON PRECISION ROLLING
ADAMITE STEEL BASE IRON BASE	AM-1 AM-2	40-50 50-65	HOT ROUGH ROLLED STEEL FILLET, STEEL BAR, SECTION STEEL AND WIRES HOT INTERMEDIATE ROLLING OR PRECISION ROLLING LARGE, MEDIUM AND SMALL SECTION STEEL, STEEL ROLL HOT ROLLING ROLLS.

DUCTILE ROLL

GRAIN ROLL

DUPLEX ROLL

CHILLEB ROLL


PRODUCTION OF COMPLETE CHILLED NODULAR CASTIRON ROLLS AND COLLARS WITH CENTRIFUGAL COMPOUND AND CONVENTIONAL METHODS

METALLOGRAPHY ORGANISM

Property of rolls: Thanks to its higher content of Ni and MO alloys, pearlite, basinite and martensite matrixes with excellent performance and produced. The graphite is in spherical form, demonstraing good heat transfer property and high tensile strength. Through changing the structure into basinite or martensite martix, chemical composition of needly-like spherical iron of heat treatment, a dense reticular primary cementite with high wear-resistance is produced.

H S D

Depth of outer layer (Centrifugal Method)

H S D

Depth of outer layer (Conventional method)

Mechanical Property	Centrifugal Method	conventional
Hardness of roll surface	HSD50-85	HSD45-80
Hardness of roll collar	HSD35-48	HSD35-55
Tensile strength of core	> 400MPs	> 300MPa

Chemical composition

Scope of application : Various types of continuous rough intermediate and finish mills for processing bars, sections and strips. Used as the secondary finishing and back rolls. Also suitable for use on stainless-steel strip hot mills.


PRODUCTION OF HIGH-SPEED STEEL ROLLS AND COLLARS WITH CENTRIFUGAL COMPOUND METHODS

property of rolls : The outer layer is a complicated carbide struture of high-carbon steel alloys containing Cr, MO, W, V, Ni and Nb, which is inlaid into the martensite structure. Through control of carbon conter and comprehensive heat treatment process, the roll shows optimal wear and thermal fatigue resistant properties and the surface of the oxidate assumes a film structure. The residual stress is also reduced to a minimum.

H S D

Depth of outer layer

METALLOGRAPHY ORGANISM

Mechanical	Property
Hardness of roll surface	HSD75-85
Hardness of roll collar	HSD35-48
Tensile strength of core	> 450MPa

Chemical composition
C	Si	Mn	Cr	Mo	W	V	Ni	Nb
1.6/2.3	0.2/0.8	0.2/0.8	3.0/6.0	3.0/6.0	1.0/4.0	4.0/7.0	1.0/3.0	1.0/3.0

Scope of application : Widely used as the F5 and F6 working rolls for strip steel hot mills, high-speed wire mills, on pre-finish mill stand and bar finish milling dividing-shear stand.