forged steel hot roll -z6尊龙凯时集团

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forged steel hot roll

forged steel cold roll

forged steel cold rolls include cold-rolled work rolls and back-up rolls. these rolls use advanced smelting equipment (electric arc furnace), refining equipment (electroslag remelting and ladle refining) and forging equipment (3150t hydraulic press) to manufacture alloys with excellent metallurgical quality for the forged steel roll blank, in terms of heat treatment, computer control technology is used to ensure that the hardness of the roll and the depth of the hardened layer on the roll body have good reproducibility. in terms of heat treatment process, sufficient preparatory heat treatment and specific induction hardening (continuous and overall), cryogenic treatment and tempering are adopted to make the roll obtain a high and uniform working layer with a hardened layer depth of more than 30mm, which is sufficient excellent wear resistance, toughness and accident resistance.

chemical composition (%)

code name	c	si	mn	cr	ni	mo	v
c-1	0.85-0.95	0.25-0.45	0.2-0.35	1.70-2.1	≤0.25	0.2-0.4	－
c-2	0.80-0.90	0.15-0.45	0.2-0.55	1.8-2.4	≤0.25	0.2-0.4	0.05-0.15
c-3	0.80-0.95	0.25-1.0	0.2-0.7	2.4-3.5	≤0.25	0.20-1.	0.05-0.15
c-4	0.75-0.95	0.2-1.0	0.2-0.5	2.8-3.6	≤0.80	0.15-0.4	－
c-5	0.60-0.80	0.3-0.80	0.4-0.9	2.5-3.5	≤0.80	0.20-0.6	－
c-6	0.70-0.95	0.2-0.90	0.2-0.5	4.0-6.0	≤0.80	0.15-1.2	≤0.35
c-7	0.80-1.00	0.2-0.90	0.2-0.4	7.5-8.5	≤0.80	0.25-1.2	0.10-0.40
c-8	1.35-1.70	≤0.40	0.2-0.65	11.-13.	-	0.40-1.0	0.15-0.30	0.30-0.60(co)
c-9	0.33-0.43	0.80-1.2	0.2-0.5	4.75-5.5	-	1.10-1.6	0.30-0.60
c-10	0.80-0.90	≤0.40	≤0.40	3.8-4.4	-	4.5-5.50	1.75-2.20	5.50-6.75(w)

roll body hardness (hs):

c-1

c-2

c-3

c-4

c-5

c-6

c-7

c-8

c-9

c-10

60-70

90-100

60-80

90-100

76-80

90-100

60-80

90-100

60-70

65-80

65-75

90-100

75-85

90-100

77-85

86-90

65-71

75-82

80-95

depth of hardened layer on roll body:

roller body diameter (mm)	≥φ 300	φ 301-600	φ 601-1020
depth of hardened layer (mm)	≥ 8	≥ 10	8-12
code -named c-1 roll shall ensure the minimum hardened layer depth of the roll as shown in the above table, and the quenched layer depth of other coded rolls shall be manufactured according to the agreement between the two parties.

forged steel cold roll application list

mill category	roll category	c
mill category	roll category	1	2	3	4	5	6	7	8	9	10
strip cold rolling mill rolls
four roll mill	work roll	●	●	●	●		●
four roll mill	support roller		●	●		●
two-roll mill	work roll	●	●
hc mill	work roll				●		●		●		●
	middle roll		●	●	●	●
	support roller	●	●			●
multi-roll mill	work roll										●
	first intermediate roll								●	●
	second intermediate roll (drive roller)							●	●	●
	second intermediate roll (idler roller)								●	●
	support roller		●
non-ferrous metal rolling mill rolls
four roll mill	work roll	●	●	●
four roll mill	support roller	●	●		●	●
two-roll mill	work roll	●	●
multi-roll mill	work roll		●								●
	first intermediate roll								●	●
	second intermediate roll							●	●	●
	second intermediate roll								●	●
	support roller		●

scope of contract

roller body diameter (mm)	roll body length (mm)	single weight (t)
φ 1020(max.)	3500(max.)	12(max.)

the typical product of the company's high-quality forged steel cold rolling rolls — cold tandem rolling work rolls:

the tandem cold rolling mill is a modern new rolling mill, and the quality requirements of the strip steel products are very high. therefore, very strict requirements are put forward for the work rolls. this type of product manufactured by our company has the advantages of high rolling capacity at one time, low energy consumption and long service life.

hardened layer depth of roll body

roll code	c-2	c-3	c-4	c-6
hardened layer depth (radius)	≥15	≥20	≥30	40-50

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