NOVOKRAMATORSKY MASHINOSTROITELNY ZAVOD:
Dear partners!
1
ROLLING MILL EQUIPMENT PARTS
1936 г. Slab mill 1100.
2006 г. Plate mill 3000.
2
Table of contents:
Pages
Rolling mill stand housings
Work and backup roll chocks
Spindles
Tooth-type couplings
Roll couplings
Intermediate shafts
Adjusting screws and nuts
Guards with tilter
Cooling-bed racks
Roller table rollers
Plate straightening machine rollers
Rectangular bars
Metal cutting blades
3-4
5
6-7
8
9
9
10
11
11
12 - 13
14
15
15
Manufacturing base for rolling equipment parts
16 - 18
ROLLING MILL STAND HOUSINGS.
MANUFACTURE. ASSEMBLY. SHIPMENT
Field of application:
Hot and cold rolling mill stands.
Designation:
Bearing of loads appeared at rolling. They are
basic parts. All blocks of rolling mill stands lie
on and contact with them.
Design distinguishing features:
The following types of housings are produced:
- close (each housing has a close contour);
- open (each housing has an open contour);
- assembled housings of closed type from 4
parts, fixed by pins (for big-size and heavy
housings - to provide transport conditions).
Steels 25Л, ЗОЛ GOST 977-88, GE240, GS45 are used. It's possible to make any grade of
steel with a required chemical composition
and mechanical properties at the Customer's
request. Max.weight of 1 casted housing is
2671, assembled - 5001.
Advantages:
Any required configuration, calculation of
strength, rigidity, optimization of design and
weight by means of special computer
programs, optimal price.
3
ROLLING MILL STAND HOUSINGS.
MANUFACTURE. ASSEMBLY. SHIPMENT
4
WORK AND BACKUP ROLLS CHOCKS
WORK ROLLS CHOCKS
BACKUP ROLL CHOCKS
5
SPINDLES
UNIVERSAL SPINDLES
Field of application:
Main drive lines of hot and cold rolling mills.
Designation:
Torque transmission from electric motor to rolling mill stand work rolls.
Design distinguishing features:
Hinges and spindles are equipped with bronze plain bearing liners (plain
plates) enabling spindle operation angles of 8°. Load-bearing parts of
spindles are made of high-grade alloyed structural steel by forging with
further heat-treatment and machining.
Spindle head outer diameter: between 300 and 1600 mm.
Spindle weight: up to 60 t.
Transmitted torque: 13 00 TM.
Provided rolling speed: up to 6 m/sec.
Advantages:
Construction simplicity, maintainability, optimal price.
Universal spindle coupling for rough stand with
bronze plain bearing liner
CARDAN SPINDLES
Field of application:
Main drive lines of cold and hot rolling mills, billet and tube mills, work
stands, paper-making equipment, various test benches, special drives etc.
Designation:
Torque transmission from electric motor or speed reducer to roll mill stands
work rolls and other operating mechanisms.
Design distinguishing features:
Spindle hinges are equipped with bearings on rolling elements. They
enable spindle to operate with angles of inclination of up to 30°.
Outer spindle hinge diameter - up to 1200 mm.
Spindle weight – up to 30 t.
Transmitted torque: up to 6 00TM.
Provided rotation speed – up to 1000 rpm.
Advantages:
Closed-type hinge, high performance (minimum friction losses), high angle
of obliquity in spindle hinge, easy maintenance.
Cardan spindle of rolling-mill.
Æ880/Æ1080 spindle with hinges on the rolling elements
for horizontal stand of the mill.
Roller quenching machine cardan spindle.
6
Strain-stress
state calculation
SPINDLES
GEAR-TYPE SPINDLES
Field of application:
Main drive lines of rolling mills and other devices.
Designation:
Torque transmission from pinion stand speed reducer to operating
mechanisms.
Design distinguishing features:
Provide torque transmission when shafts are not coaxial to executing
mechanism. Possibility to work with angles of obliquity in the hinge of up to
3°. The hinge consists of toothed assembly and teeth bushing with involute
barrel tooth. Strength parts of the spindle are made of alloyed highstrength structural steel by forging with further heat treatment (nitride
hardening, cementation, induction hardening) and machining.
Working surfaces hardness 45...60 HRC.
Hardening depth:
- By nitride hardening 0.4...0.8 mm;
- By induction hardening 2...3 mm;
- By cementation > 2 mm.
Spindle hinge outer diameter-between 270 and 800 mm.
Spindle weight - up to 12 t.
Transmitted torque - up to 3500 kNm.
Provided rotation speed - up to 1500 rpm.
Advantages:
Closed-type hinge, high rotation speed, easy servicing, maintainability.
Teeth bushings
of spindles of three-high
stand of billet mill
ROLLER SPINDLES
Advantages:
High loading capacity, wear-resistant, low noise level while operation and
capacity to transmit high torques at significant misalignment of connected
shafts.
Section through
roller hinge
7
TOOTH-TYPE COUPLINGS
Tooth-type couplings for shafts with diameters of 30...200 mm
Maximum
torque, kNm
Shaft
diameter d,
mm
Limiting
rotational
frequency, s-1
Dynamic
torque, kg m2
1
30-40
90
0,05
1,6
40-45
80
0,06
2,5
50; 55; 60
75
0,08
4
60; 65
62
0,15
6.3
65-75; 80
55
0,25
10
80-95; 100
47
0,5
16
100-120
40
1,15
25
120; 125; 130; 140
35
2,25
40
140; 150; 160
29
6,0
63
160-180; 190; 200
20
10,5
Tooth-type couplings for shafts with diameters of 170...500 mm
Maximum
torque, kNm
Shaft
diameter d,
mm
Limiting
rotational
-1
frequency, s
Dynamic
torque, kg m2
71
170; 180; 190-220
12,5
55
100
190-220; 240; 250
11
85
150
240-260; 280
10
160
200
280-320
9
215
250
300; 320
8,5
325
375
340-380
7,5
600
560
400-450
6,3
1140
750
420-480
5,6
1600
1000
480; 500
5
2700
Tooth-type couplings for shafts with diameters of 450...950 mm
8
Maximum
torque, kNm
Shaft
diameter d,
mm
Limiting
rotational
frequency,
min-1
Dynamic
torque, kg m2
1600
450-600
250
1000
2000
500-650
230
1480
2800
560-700
210
2410
3600
600-750
110
3960
4500
650-800
90
5740
7500
750-950
80
9800
ROLLER COUPLINGS. INTERMEDIATE SHAFTS
ROLLER COUPLINGS
Field от application:
Main drive lines of hot and cold rolling mills.
Advantages:
Construction simplicity, maintainability, optimal price.
Designation:
Torque transmission from spindles to roll mill work rolls. lnstalled and
fastened on the ends of work rolls.
Couplings are manufactured of high-grade alloyed steel by forging with
further heat treatment and machining.
Proven technology of heat treatment combined with optimal composition of
alloying elements provides high level of strength and plastic properties of
the material.
Roller couplings outer diameter: between 300 and 1600 mm.
Weight: up to 9 t.
Cardan spindle
roller coupling of billet mill
Roller couplings
INTERMEDIATE SHAFTS
Field of application:
Drive lines of different machines and mechanisms.
Designation:
Torque transmission to different operating mechanisms located far
from electric motors.
Design distinguishing features:
Shafts are installed on the intermediate supports, equipped with plain
and rolling bearings.
Intermediate shafts are manufactured of high-grade alloyed steel by
forging with further heat treatment and machining.
Weight of intermediate shaft with couplings and supports: up to 100 t.
Advantages:
Construction simplicity, maintainability, optimal price.
9
ADJUSTING SCREWS AND NUTS
ADJUSTING SCREWS
Adjusting screws of rolling mill stand 4300
ADJUSTING NUTS
Field of application:
Screwdown mechanisms of rolling mill stands.
Designation:
Change of clearance between the rolls.
Features:
They are made of cast bronze (grades: БрА9Ж3Л, БрА10Ж3Мц2,
G-CuSn12Ni) both in solid-cast and shrouded version.
The overall dimensions :
L = up to 1300 mm, outer Dia. = up to 1400 mm,
Thread of Dia. = up to 1000 mm,
weight =up to 9 t.
Advantages:
Any required configuration , high reliability.
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Adjusting nuts of rolling mill stand 4300
GUARDS WITH TILTER. COOLING-BED RACKS
GUARDS WITH TILTER
Field of application:
Guards with turnover device are installed upstream and downstream of the
stand of the break-down and plate mills.
Designation:
Guards with turnover device (or without turnover device) are intended to
align a breakdown bar with the axis of rolling and to turn it around 90o with
the use of the levers positioned on one of the guards.
Features:
Guards are manufactured of cast steel and provided with internal cavities
for their cooling.
At the Customer's request the provision is made for using any grade of
steel with the specified chemical composition and mechanical properties.
Advantages:
Any required configuration.
COOLING-BED RACKS
COOLING-BED RACKS
Field of application:
Racks are placed on the movable and fixed beams of the section mill
cooling-bed.
Designation:
Racks are used for conveying rolled products at cooling including the
provision for being turned over.
Features:
Racks are manufactured of structural carbon steels (steel Ст3, 09Г2С,
17Г1С, 10ХСНД and others).
At the Customer's request the provision is made for using any grade of
steel with the specified chemical composition and mechanical properties.
Advantages:
Any required configuration.
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ROLLER TABLE ROLLERS
Engineering capabilities of NKMZ make it possible to manufacture
both the roll tables themselves and spares to them in the form of
some elements and units of rollers complete with bearing supports of
various design and assembly.
FORGED ROLLERS WITH CYLINDRICAL
BODIES
Field of application:
Heavy-duty main mill tables, charging, receiving and trailer roll tables for
breakdown, plate, wide-strip, billet and rail-and-structural steel mills.
Roller material:
Carbon, structural and high-alloy steels.
Design features:
Roller body and necks heat treatment, special heat- and wear-resistant
coatings; if required and at the customer's request the bearing supports
and roller body may be cooled.
Dimensions:
Body diameter = 150 ¸ 500 mm; body length = 700 ¸ 5000 mm.
Roller weight: up to 8,0 t.
FORGED DISK ROLLERS
Field of application:
Trailer tables for plate and wide-strip mills.
Roller material:
Carbon, structural and high-alloy steels.
Design features:
Roller necks heat treatment.
Dimensions:
Body diameter = 200 ¸ 750 mm; body length = 2000 ¸ 3000 mm.
Roller weight: up to 5,7 t.
FORGED ROLLERS WITH CONICAL BODIES
Field of application:
Roll tables for turning workpieces around during rolling in plate and
plate-by-plate reversing mills. Product transport lines.
Roller material:
Carbon, structural and high-alloy steels.
Design features:
Roller body and necks heat treatment.
Dimensions:
Body diameter = 250 ¸ 600 mm; body length = 2500 ¸ 7200 mm.
Roller weight: up to 13,5 t.
Simulation of coil opening
on the roll table
12
ROLLER TABLE ROLLERS
FORGED ROLLERS WITH BICONICAL
BODIES
Field of application:
Roll tables for aluminium and aluminium alloys hot rolling mills.
Roller material:
Carbon, structural and high-alloy steels.
Design features:
- tapered sections hardness: 60…70 HSD;
- tapered sections hardened case depth – not less than 7 mm;
- tapered sections roughness: Ra 0,8…1,6.
Dimensions:
Body diameter = 250 ¸ 565 mm; body length = 1700 ¸ 4500 mm.
Roller weight: up to 10 t.
FORGED ROLLERS WITH FLANGES
Field of application:
Trailer tables for section and pipe-rolling mills.
Roller material:
Carbon, structural and high-alloy steels.
Design features:
Roller bodies and necks heat treatment, internal cooling of rollers, wearresistant coating.
Dimensions:
Body diameter = 200 ¸ 600 mm; body length = 400 ¸ 1400 mm.
Roller weight: up to 3,0 t.
HIGH-SPEED ROLL TABLES
WELDED ROLLERS
Field of application:
High-speed runout tables for wide-strip hot mills.
Roller body material:
Heat-resistant cast iron, wear-resistant stainless steels.
Design features:
Roller body internal cooling, static and dynamic balancing.
Dimensions:
Body diameter = 260 ¸ 300 mm; body length= 1700 ¸ 2500 mm.
Roller weight: up to 0,6 t.
WELDED ROLLERS
Field of application:
Middle- and light-weight trailer tables for rolling mills.
Roller body material:
Carbon, structural and high-alloy steels.
Design features:
Roller necks heat treatment, internal cooling of roller body, static and
dynamic balancing.
Dimensions:
Body diameter = 200 ¸ 330 мм; body length = 800 ¸ 6000 mm.
Roller weight: up to 2,0 t.
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ROLLER TABLE ROLLERS.
PLATE STRAIGHTENING MACHINE ROLLERS
WELDED FURNACE ROLLERS
Field of application:
End-charged end-discharged furnaces.
Roller body material:
Heat- and wear-resistant steels and alloys.
Design features:
Body, shaft and journals internal cooling, thermal insulation.
Dimensions:
Body diameter = 260 ¸ 365 mm; body length = 1200 ¸ 4300 mm.
Roller weight: up to 1,4 t.
WORK AND BACKUP ROLLERS
OF PLATE-STRAIGHTENING
MACHINES AT IRON AND STEEL WORKS
14
ROLLERS OF SECTION
AND PIPE-ROLLING MILLS
STRAIGHTENING MACHINES
RECTANGULAR BARS. METAL CUTTING BLADES
RECTANGULAR BARS
METAL CUTTING BLADES
Blades characteristics
• The blades are machined in machining centers that provide high
accuracy of geometry.
• Walkthroughs at all production stages guarantee high quality of blades
and full conformity of their characteristics to their operation.
• Investigations constantly carried out at the premises of the works
laboratory make it possible to improve continuously the blades production
technique.
1. Blades for flat products cutting
1.1 Flat blades
2. Rolled section cutting blades
2.1 Individual
Dimensions, mm
Weight, kg
Dimensions, mm
Weight, kg
2200х180х80
200
155х120х40
4,4
2080х170х100
236
120х115х40
2,7
Dimensions, mm
Weight, kg
1000х80
400
650х55
100
320х10
4,3
2.2 Grouped
Dimensions, mm
Weight, kg
740х255х60
80
740х230х60
70
1.2 Disk blades
Dimensions, mm
Weight, kg
2200х180х80
230
1450х210х80
180
1700х100х30
38
200х740х60
65
3. Shearing press blades
Dimensions, mm
Weight, kg
458х180х70
43
355х180х70
30
15
MANUFACTURING BASE
FOR ROLLING EQUIPMENT PARTS
STRUCTURAL STEEL PRODUCTION.
FOUNDRY
High quality of blanks is provided by the advanced metallurgical facilities
available with NKMZ.
Processing complex of NKMZ steelmaking production includes electric
arc furnaces EAF with the capacity from 5 to 50 tonnes, after-furnace ladle
steel treatment units “Ladle-furnace”, vacuum degassing area using a
steam jet pump and vacuum chambers including vacuum chamber for VD
and VOD processes.
Steelmaking production facilities enable about 1000 grades of steel to
be produced the quality level of which meets the highest international
standards.
Engineering capabilities of production permit producing forging ingots
weighing from 1,6 t to 170 t and up to 200 t liquid metal for making steel
castings.
Engineering capabilities of foundry enable us to produce castings of:
<carbon, alloy, high-alloy grades of steel;
< gray, high-strength, bearing and special cast iron;
< bronze alloys.
State-of-the-art sand mixing equipment made by FAT and GUT
(Germany), application of advanced materials when making casting
molds as per «FURAN-process» make it possible:
<to produce steel castings of complicated configuration using
engineering analysis computer systems (САЕ) MAGMASoft (Germany)
and LVMFlow (Russia) for developing technical processes;
< to produce castings of the following weight (in tonnes):
16
Steel castings
min
1
max
120
Ferrous castings
min
0,001
max
105
Non-ferrous castings
min
0,0001
max
5
Performances
S
Unit of
measurement
NKMZ
level
World
level
%
£ 0,003
£ 0,003
%
£ 0,010
£ 0,010
[H]
ррm
£ 1,5
£ 1,5
[O]
ррm
£ 25
£ 25
[N]
ррm
< 50
< 50
P
ррm
£ 20
£ 20
А-sulfides
score
1,0/1,0
1,0/1,0
Б-aluminates
score
1,0/1,0
1,0/1,0
С-silicates
score
1,0/1,0
1,0/1,0
D-oxides (globular)
score
1,0/1,0
1,0/1,0
PRESS-FORGING AND THERMAL PROCESS
Press-forging facilities provide for producing forgings weighing between
0,2 and 110 t from forging ingots ranging from 3,5 to 170 t. The process of
open die forging is realized in automated forging complexes that are
technologically interconnected with heating, heat-treatment and handling
machinery and under monitoring of process control systems.
Engineering capabilities of heat treatment allow heat treatment of many
types to be performed and the required physical and mechanical
properties to be obtained.
Automated process control systems perform full maintenance and
stabilization of furnace conditions, according to the preset heating, cooling
and power saving conditions programs with the provision of temperature
gradient up to ±5°C.
Standard
forgings
Shafts
Overall
dimensions, m
Dmax =0,3...1,6
L=2,5...22
Shafts
with flanges
Dmax < 2
L=1…3
5…25
Cylinders
with openings
D=0,45...2
L=0,6...9
d >0,23
0,2...105
D=0,8...2
L=1,5...5
S>0,2
D=0,5...4,8
H=0,45...1,5
S>0,1
Bands
Rings
Disks
and disks
with openings
D=0,5...3
H=0,12...1,4
d=0,08...0,85
Weight, t
5,2...105
3,2...65
0,3...65
0,2...85
NKMZ resource by heat treatment types
Primary
Izothermal
quenching
Tempering
Quenching
Secondary
Normalization
Annealing
High
induction
hardening
Industrial
frequency current
hardening
Gas nitriding
Kerosene
Frequency processing
Ion nitriding
Nitriding
Carburizing
Gas carburizing
Bulk hardening
Surface treatment
Martempering
Differential treatment
17
GEARS
SPUR GEARS, HELICAL GEARS, HERRINGBONE
OPEN GEARS
Parameter
Value
Maximum diameter
to be machined, mm
Accuracy grade, up to
0…2000
7...8
Parameter
Maximum diameter
to be machined, mm
Accuracy grade, up to
Value
0…2000
5...6
HERRINGBONE CLOSED GEARS
Wheels
Pinion-shafts
Parameter
Value
Parameter
Maximum diameter
to be machined, mm
Accuracy grade, up to
Maximum module
to be machined, mm
Face width, mm
0…3150
Maximum diameter
to be machined, mm
Value
0…1600
9
50
1000
Accuracy grade, up to
9
Maximum module
to be machined, mm
75
Pinion-shaft length, mm
800
INTERNAL-GEAR TRAINS
WORM GEARS
Parameter
Value
RACK-AND-PINION GEARS
Parameter
Max. length
of treatment, mm
Value
Maximum diameter
to be machined, mm
0…2600
Parameter
Accuracy grade, up to
0…5000
Maximum module
to be machined, mm
8
Max. length
of treatment, mm
8
Face width, mm
600
BEVEL GEARS
Parameter
Maximum diameter
to be machined, mm
Accuracy grade, up to
Maximum module
to be machined, mm
Types of teeth to be cut – straight and spiral teeth (circular-arc tooth gearing,
cyclo-palloid gear, "Gleason" gear).
18
0…11000
24
Accuracy grade, up to
Accuracy grade, up to
Value
Value
0…2200
6...10
30
Angle of advance, deg
0...90
Face width, mm, up to
250
8...9
Designed by marketing communications department
Kiev
Kramatorsk
CONTACT DETAILS
Full name:
Public Joint Stock Company
“Novokramatorsky
mashinostroitelny zavod”
Abbreviated name:
PJSC “NKMZ”
Postal address:
84305 Ukraine, Donetsk region,
Kramatorsk, NKMZ
Phone:
Fax:
E-mail:
Web:
+38 (06264) 3-70-80, 7-89-77
+38 (06264) 7-22-49
ztm@nkmz.donetsk.ua
www.nkmz.com
RNNBO code:
05763599
Individual tax number:
057635905159
VAT-payer
registration certificate:
06294529 HB № 001598
Director of rolling equipment
production division:
Phone: +38 (06264) 7-80-31
Chief engineer of rolling equipment
production division:
Phone: +38 (06264) 7-87-18
Head of marketing and contracts department
of rolling equipment production division:
Phone: +38 (06264) 8-99-69
Chief design engineer of rolling equipment
production division:
Phone: +38 (06264) 7-86-86