Processing Lines - Primetals Technologies Japan, Ltd.

Primetals Technologies Japan, Ltd.
A joint venture of Siemens,
Mitsubishi Heavy Industries and Partners
Tokyo office:
Shintamachi Bldg.
34-6, Shiba 5-Chome, Minato-ku,
Tokyo 108-0014, Japan
Phone: +81-3-5765-5231
Hiroshima Works:
6-22, Kanonshin-Machi, 4-Chome, Nishi-ku,
Hiroshima 733-8553, Japan
Phone: +81-82-291-2181
primetals.com
Brochure No. : June 2015/T08-0-N071-L4-P-V1-EN
Printed in Japan
© 2015 Primetals Technologies Ltd. All rights reserved.
PROCESSING LINES
The information (including, e.g., figures and numbers) provided
in this document contains merely general descriptions or
characteristics of performance based on estimates and
assumptions which have not been verified.
It is no representation, does not constitute and/or evidence a
contract or an offer to enter into a contract to any extent and is
not binding upon the parties. Any obligation to provide and/or
demonstrate respective characteristics shall only exist if expressly
agreed in the terms of the contract.
These estimates and assumptions have to be analyzed on a caseto-case basis and might change as a result of further product
development.
Primetals Technologies excludes any liability whatsoever under
or in connection with any provided information, estimates
and assumptions. The provided information, estimates and
assumptions shall be without prejudice to any possible future
offer and/or contract.
Any use of information provided by Primetals Technologies to the
recipient shall be subject to applicable confidentiality obligations
and for the own convenience of and of the sole risk of the
recipient.
A MHMM Rolling Technology
Printed by
Fuji Xerox Service Link Co., Ltd.
https://www.fxsvl.co.jp/
primetals.com
CONTINUOUS PROCESSING LINES
CREATIVELY FLEXIBLE TECHNOLOGIES
PTJ’s processing lines
1. Continuous pickling line (PL)
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pickling tank
Jet pickling tank
Shallow bath pickling tank
2. Continuous galvanizing line (CGL)
High quality CGL for automobile application
Small or middle range compact CGL
3. Continuous annealing line (CAL)
High speed tin plate CAL
Sheet CAL
Double duty CAL for tin and sheet
4. Annealing and pickling line for stainless steel
Combination of :
Salt bath tank,
... to increase product quality, conserve energy,
Neutral salt electrical pickling tank,
reduce labor costs, boost output,
Nitric acid electrolytic pickling tank,
achieve greater efficiency and raise overall productivity.
Mix acid pickling tank
Over the past 50 years, Mitsubishi Heavy Industries and Hitachi, have
individually worked with the world’s steel industry supplying advanced
technologies, increasing production and improving quality. In the face of
increased global competition, the steel industry divisions of Mitsubishi
Heavy Industries and Hitachi joined on October 2, 2000 and established a
joint venture to provide superior service and products.
Primetals Technologies Japan, Ltd. (PTJ) has massive experience in the
processing lines. PTJ’s processing lines meet various customers’
requirements for product quality, energy savings, automation, etc.
1
2
CONTINUOUS PICKLING LINE (PL)
TECHNOLOGIES
Suppliy Capabilities and Features
- Primetals Technologies Japan, Ltd. (PTJ) has supplied a total 76 continuous pickling lines since 1955 to customers worldwide.
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pickling tank serves the
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same pickling performance as jet tank, and saves energy without a ciruclation pump.
- Reliable equipment achieves stable operation. PTJ has numerous patented and original equipment as the following.
Loop Car
i BoxOR Tank
Automatic Coil Charging System
Jet Tank
Side Trimmer
Pay-off Reel
Coil Opener
Processor
Rinse Tank
Polypropylene Pickling Tank
Entry Section Equipment
Tension Leveller
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Flying Shear
Delivery Equipment
4
PICKLING TANK TECHNOLOGIES
1. Introduction
3. Various PTJ pickling tank technologies
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3.1 Shallow bath pickling tank
Main Stream
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distribution
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aqueous
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2. Pickling theory
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pickling tank
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2.1 Dominant factors in pickling section
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2.2 Promoting a means for pickling reaction
Conventional deep bath pickling tank
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PTJ Shallow bath pickling tank
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Boundary Layer Thickness
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150
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PTJ i BoxO
pickling tank
PTJ Jet pickling tank
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pickling tank (modification from an existing conventional deep-bath tank)
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Strip
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Upper cover (new)
Roll (new)
Lower cover (new)
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Distance from Entrance of Bath
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No.1 Acid tank
No.2 Acid tank
No.3 Acid tank
No.4 Acid tank
Skid (new)
6
CONTINUOUS GALVANIZING LINE
TECHNOLOGIES
Capabilities and Features
- Primetals Technologies Japan, Ltd. (PTJ) has supplied a total 49 CGLs since 1955 for customers in Japan, Korea, Taiwan and the United States.
- PTJ is one of a few steel plant manufacturers in the world which performs in-house design and manufacturing of all processing components which
construct a continuous galvanizing line, such as the entry section, furnace, galvanizing system, skin-pass mill, tension leveller, chemical treatment,
and exit section.
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Skin Pass Mill
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Horizontal Roll Coaters
Instrumentation and more.
Vertical Roll Coaters
After Pot Cooling
Radiant Tube Burners
in Heating Section
Tension Leveller
GFG Roll Coater
Side Trimmer
Scrap Baller
Cooling Equipment
Entry Section
"Y" Equipment
"G" Equipment
Strip Stabilizer-Air Knife
Tension Reel
(Carrousel Type)
GFG Oiler
Vertical Furnace
7
L-Shaped Furnace
Zinc Pot
Pot (YG) Equipment
("Y": Air Wiper, "G": Pot Rolls)
8
PTJ’S FURNACE TECHNOLOGIES
A Long-time Furnace Supplier to the Steel industry
Cooling Technology
For more than 40 years, PTJ has supplied vertical and horizontal furnaces to the steel
Accelerated gas jet cooling equipment utilizing slit-type gas-jet
industry, responding to customer requests for higher production capacity, greater energy
nozzles realizes uniform and rapid cooling of the steel strip in the
savings, extended equipment lifetime, etc.
furnace.
Recently, higher cooling speeds (˫/s) have become necessary as
Heating and cooling are key technologies for furnace equipment.
the production of high-tensile steel increases to meet
Also, thanks to the long-term experience supplying furnaces,
environmental demands.
PTJ has accumulated know-how to handle high-temperature steel strip in the furnace.
PTJ has supplied:
22 furnaces for Continuous Annealing Line (CAL)
6 furnaces for Continuous Galvanizing Line (CGL)
Accelerated Gas Jet Cooling Equipment
20 furnaces for other lines, such as APL, annealing line for silicone steel, etc.
Type of furnaces PTJ has supplied are:
Other cooling equipment can also be applied in accordance
- Vertical Furnace
with the process requirement:
- Horizontal Furnace
L-Shaped Annealing Furnace
- L-shaped Furnace, which is a combination of vertical and horizontal
- Roll Cooling Equipment
- Rotary Hearth Furnace
- Roll and Gas Jet Combined Cooling Equipment
(Cooling roll and auxiliary gas jet)
- Conventional Gas Jet Cooling Equipment
- Fog Cooling Equipment
Heating Technology
- Water Cooling Equipment
For most annealing furnaces for steel strip, indirect heating is utilized to prevent
oxidization of the strip surface during the heating process.
For this purpose, the radiant-tube heating furnace has been our choice.
Design and selection of radiant-tube materials and also radiant-tube burners are
Auxiliary Gas Jet for Roll Cooling
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Other features for furnace design, strip transportation, etc.
Modular design of the furnace
Radiant Tube Heating Vertical Furnace
can be applied as needed,
Strip transportation in the furnace is another key
for easy installation
aspect of the furnace design.
at the site.
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applied to furnace rolls.
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For the purpose of Direct Firing of the steel strip, MID* burner has been
applied to transfer strip without contacting the rolls.
developed by PTJ.
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the strip without oxidizing the surface realizing high speed heating
compared to the indirect heating method.
*: PTJ impinging Deoxidizing Burner
Modular design for
Horizontal furnace
MID Burner and the Burner Flame
Floater for strip transportation without rolls
9
10
PTJ NON-CONTACT STRIP STABILIZER
PTJ Non-Contact type Strip Stabilizer is an electro magnetic damping system for reduction of the strip vibration amplitude and
Performance Features
simultaneous correction of the strip shape, such as cross-bow, with high processing speed, resulting in improvement of uniformity of
zinc coating weight in hot-dip galvanizing lines.
Reduce Strip Vibration Amplitude
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The left actual measured data on the left shows
addition to complete integrated unit with PTJ wiping unit.
dramatic reduction of the strip vibration amplitude
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Electromagnets on both sides of the strip, installed in two (2) separate housings, are the core of the Strip Stabilizer.
7mm before application of stabilizer.
Accordingly the gap between the running strip and
wiping nozzle can be continuously stabilized and
Wiping Unit
minimized, resulting to light zinc coating weight at
Typical Application
1) Strip Thickness
2) Strip Width
3) Material
4) Process Speed
5) Strip Tension
:
:
:
:
:
higher process strip speed.
0.3 to 4.5mm
600 to 1,850mm
Zn, Al gal. steel
Up to 200mpm
0.6 to 2.5 kgf/mm2
Strip Stabilizer
Correct Strip Shape
Function Principle
The actual measured data on the right shows
The strip positioning is implemented by individual control of the attractive force of each
electromagnet according to the measured distance using a distance sensor.
dramatic correction of the strip cross-bow down
to less than +/-1.0mmP-P from +/-6.0mmP-P.
Accordingly, easy and safety adjustment of pot
Two (2) units, consisting each of two (2) electromagnets sandwiching the distance
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rolls and wiping unit can be implemented, and
longer maintenance intervals of the pot equipment
can be realized.
implemented at the same time.
Electromagnet
Strip Stabilizer “OFF”
Control Uniformity of Zinc Coating Weight
Actual measured record shows “Improvement of zinc
coating deviation of 2g/m2 at 1-sigma”for target
coating weight of 49g/m2 instead of the previous
Strip Stabilizer “ON”
deviation of 6։8g/m2.
Dramatic improvement of zinc coating uniformity and
Anti-Heat Protector
Function Capability
11
Distance Sensor
reduced zinc consumption are possible in accordance
with this function.
P-P
Stable Strip Vibration
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Correct Strip Shape
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Force of Magnet
: 15 kgf/each (at thick 0.8mm)
12
PTJ SIDE TRIMMER
PTJ TENSION LEVELLER
Turret Side trimmer
Tension Leveller
FEATURES
Typical PTJ tension levellers have the capability for shape
High Accuracy
correction and improvement of strip surface condition after
- High-stiffness trimmer housing and knife support
hot-dipped galvanizing, and PTJ scale break levellers have the
- Trimmer entry dual steering rolls
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- Precision knife lap and clearance setting
time in addition to shape correction for hot rolled strip in the
High Quality Production
pickling process.
- Automatic knife lap and clearance setting
(Pre-set by Level-2)
Ease and safe of Maintenance
- Quick knife changing operation at non-trimming side
Individual Driving System
PTJ provides excellent elongation control accuracy by using an individual
driving system for the bridle rolls, resulting in reduction of running costs
FWC (Flying width change) Side trimmer
and improvement of maintainability by means of the developed electrical
equipment and elongation control.
FEATURES
In addition to the Basic Features of Turret Head Side Trimmers, Flying Width Change Function
Tension Leveller (Scale Breaker) for PL
- Automatically changes trimmed width while line is running
Line Stop for Width Change is NOT required!
Circular knives trim strip of different widths smoothly as the trimmer housings rotate and
traverse to the new trimmed width.
Thus FWC Side Trimmer can change the trimming width without line stop.
Pattern1
Tension Leveller for CGL
Pattern3
Typical Change of Trimming Width
Tension Leveller Typical Configuration
Change from Untrimmed Strip to Trimmed Strip only for
spindle drive type
PTJ tension leveller upper roll cassettes have unique
function to rotate the upper cassette using the lever for
Roll Changing Device
Upper Cassette Turning
Device
roll changing.
After pulling upper cassette by roll changing car,
operator can rotate any upper cassette using the lever
Weld Point
Weld Point
and change work rolls easily and safely without other
tools.
Pattern2
Pattern4
Change from Trimmed Strip to Untrimmed Strip only for
Trimming along Notched Portion
spindle drive type
Tension Leveller Roll Cassette Change
Weld Point
13
Weld Point
14