Thursday, January 16, 2020

186,000 Tons/Year Rebar Mill for Sale

rebar mill for sale


186,000 Tons/Year Rebar Mill for Sale



We have a rebar mill with 32 tons /hour capacity for sale.

Production Size: Bar (D10, D13, D16, D19)
Production capacity: 186,000 tons /year  ( heating furnace not available )
Billet  Size : Billet 120Aq, 125Aq,  Length: Max. 3m
Make: China manufacturer
Year Original manufacturing 2001
Revamped in 2014 and 2016

Scope of supply :
 Roughing mill ( 3 Hi /8 passes)
 Intermediate mill(2Hi/10 passes)
Finishing mill(2 HI /6 passes)
Cooling bed: 6.8 meters x 53 meter
Cutting machine: 3000 tons of capacity
Bar handling equipment

Reheating furnace is not included
Currently dismantled for reinstallation.


Free send inquiry to stella@hanrm.com if any needs.
Whatsapp/Wechat:+8615877652925
Website:  https://www.hanrm.com

rebar mill cooling bed


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housingless mill stand


                       

Wednesday, December 25, 2019

Wire Rod Mill | De-Bars Rolling Mill for Sale

Wire Rod/ De-Bars Rolling Mill for Sale

Wire Rod/ De-Bars Rolling Mill for Sale


Continuous Rolling Mill


Wire Rod/De-bars Rolling Mill Capacity: 650.000 -800.000 TPY

Weight of equipment is about 3000 tons

Wire rod size: 5.5-23mm

Rebar in coil size : 6-8-10-12mm

Number of booths: 29

Number of shears: 5

Pinch rolls: 4

Water boxes: 8

Laying heads: 2

Column: 2x75m

Coil exit Morgan

2 Binder machines Healthy birch

Max. speed: 90m/sec

hot rolling mill laying head


The Wire Rod Mill | De-Bars Rolling Mill is dismantled and packed in boxes ready for immediate shipment.


Free send inquiry to stella@hanrm.com if any needs.
Whatsapp/Wechat:+8615877652925
Website:  https://www.hanrm.com






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Monday, December 16, 2019

Bar and Wire Rod Rolling Mill For Sale

Bar and Wire Rod Mill



Bar and Wire Rod Mill Production Line



50000-300000 tons of bar and wire rod mill production line, 8-32mm of full continuous rolling production line, is common carbon steel, excellent carbon structural steel and low alloy steel; the designed annual production capacity is 50000-300000 tons, and the large line speed of finishing mill is 5-16m / s.



1. Billets: 100 × 100 -- 150 × 150 continuous casting billets with a length of 3000mm -- 6000mm are provided by the internal steel-making and continuous casting workshop of the company.


2. A new regenerative pusher reheating furnace will be built for the whole continuous rolling mill production line. The fuel is blast furnace gas and the air will be preheated by single preheating. The hourly heating capacity is 40-80t / h, end in and side out, a single row of cloth, which can meet the requirements of 50000-300000 tons of rolling material per year. The inner chamber size of the reheating furnace is 6.6x24m.


reheating furnace


3. 16 rolling mills are adopted, which are divided into roughing mill, intermediate mill and finishing mill, forming the whole continuous rolling production line, with the layout of 6 + 6 + 4 horizontal and vertical alternation, and the main drive of rolling mill is controlled by full digital PLC. Micro tension continuous rolling is adopted for rough rolling and medium rolling. There is one side looper in the middle of medium rolling and finishing rolling, and there is a vertical looper between each rolling mill of finishing the rolling unit, forming no tension and no torsion rolling. The high speed of the rolling mill can reach 5-16m / s.


4. Three flying shears are set on the rolling line, which is located behind the three units and is respectively used for cutting head, accident breaking and finished product multiple length sections. The structure of scissors is crank type, rotary type, and crank rotary combination.


5. Rolling process: round 6.5mm, threaded steel 8-32mm. The annual output of 50000-300000 tons of material requires 330000 tons of continuous casting slab, and the comprehensive yield is 98% (negative deviation is considered).


wire rod mill



6. Controlled rolling water piercing cooling device is set in front of the finishing mill and a controlled cooling water piercing device is set behind the finishing mill to produce high-strength steel bars (grade III steel) and improve the mechanical properties of the products.



7. Semi-automatic packing equipment and 50t cold shear are used in the finishing collection area.



8. The control system adopts computer secondary control, which is divided into four areas (heating furnace area, rolling area, controlled cooling area, and finishing area), and each control point is controlled in a decentralized and centralized way.





Production Process and Product Structure




It adopts the international advanced equipment and advanced production technology: the heating furnace is a walking beam type, adopts the double regenerative high air temperature combustion technology of energy saving and environmental protection, and uses the blast furnace gas with low calorific value as fuel, which can greatly reduce the fuel consumption, with the characteristics of fast heating speed and good heating quality.



There are 18 rolling mills in the whole line. In order to ensure the dimensional accuracy of the products, 6 loopers are set in the finishing mill room, and the water-cooling device is set after finishing rolling, which can realize the torsion-free controlled rolling of the whole line. In the production of φ 10 ~ φ 16 threaded steel, three-section rolling is used; in the production of φ 18 ~ φ 22 threaded steel, two-section rolling technology is used. Among them, φ 22 two slitting rollings is a domestic innovation, and the family has this technology, and the slitting rolling capacity is at the first level in China. The main drive of the rolling line adopts the full digital control DC motor, which can realize the automatic operation of the whole line, and the large rolling speed can reach 18 m / s. The raw materials used are continuous casting billets, all supplied by hot delivery.


bar and wire rod mill


The main product specifications include national standard II, national standard III, British standard, Japanese standard, plus standard Φ 10 - Φ 40 straight thread steel and round steel of various specifications.


Production steel includes ordinary carbon structural steel, excellent carbon structural steel, low alloy steel, etc. All products are delivered in straight condition.


Please contact stella@hanrm.com for quotation.
And free send inquiry to us.
Whatsapp/Wechat:+8615877652925
Website: https://www.hanrm.com


walking beam cooling bed



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Friday, November 22, 2019

600,000 TPY Rebar Rolling Mill | Section Mill for Sale

rebar rolling mill for sale


Mini-Metallurgical Plant and 600,000 TPY Rebar Rolling Mill | Section Mill for Sale



The Minimill plant is composed of Melting & Refining shop

FastArc TM AC 70 t tapped steel

Ladle Furnace LF 70 t

Single-tank/single-cover VD/VOD station

FTP for EAF & LF primary and secondary fumes.

Melt shop auxiliary facilities

Continuous Casting Plant: 

3-strand Danieli FastCast TM billet continuous casting machine

Rolling Mill:

80-t/h (or 100-t/h in hot charge) Bar and Light Section Mill
70-ton Ladle Furnace (12/14 MVA transformer).
70 ton VD/VOD station, single-tank, single-cover type.
Raw material handling/charging system for EAF,LF and VD
Fume Treatment Plant for primary and secondary fumes for EAF and LF E C B

The Meltshop:

  A -Arc EAF 70-ton tap weight (64/74 MVA transformer), 5.3-m shell dia, equipped with the latest generation of wall-mounted oxygen/carbon injectors. The casting of specialty and stainless steel ingots

  B -70 ton Ladle Furnace (12/14 MVA transformer).
  C -70 ton VD/VOD station, single-tank, single-cover type.
  D - Raw material handling/charging system for EAF, LF, and VD
  E - -Fume Treatment Plant for primary and secondary fumes for EAF and LF
  F - 3-strand, 9-m-radius FastCast Continuous Casting Machine, for high-speed casting of 130x130, 150x150,180x180-mm quality billets. Direct connection to the rolling mill reheating furnace, for hot-charging operation

continous casting machine



PLANT CAPACITY: 500,000 tpy in cold-charge mode(*) Up to 600,000 tpy, in hot-charge mode

STARTING MATERIAL: Billet 150 x 150 x 12,000 mm
                                               180 x 180 x 12,000 mm Weight 2,000 kg and 3,000 kg

STEEL GRADES: Low carbon, concrete reinforcing, low/medium alloy steels

FINISHED PRODUCT:  Rounds (RB) from 16 to 50 mm dia
Deformed Bars (DB) from 10 to 40 mm dia, 4- strand slitting on DB 10, 12 mm dia 2- strand slitting on DB 14, 16 and 18 mm dia

Squares from 14 to 40mm, Flats from 30x6 to 80x25mm; Angles(equal) from 30x3 to 50x7mm; C profiles form 4 to 5

FINISHING SPEED: Up to 12 m/s

 PRODUCT TOLERANCES: According to Local and International Standards

FINISHED PRODUCT SUPPLY: Straight Bar Bundles Length 6,000 to 12,000 mm Weight 1,000 to 5,000 Kg
 (*) Yearly capacity based on a 3 daily shifts working schedule

Reheating furnace: Walking Hearth type capacity 80 t/h (or 100 tph in hot charge)

Roughing Mill: 8 AC driven ESS compact cantilever stands 820/685/585 mm dia in H and V configuration

Intermediate Mill: 6 AC driven SHS housingless stands 475 mm dia in H and V configuration.

Finishing Mill: 6 AC driven SHS housingless stands 430 mm dia in H, V and H/V convertible configuration equipped with automatic quick-changing system
In-line QTB treatment for high tensile deformed bars

Cooling Bed: Rake type Dimensions 54 x 13m equipped with a water spray system

Finishing Services: CLS on-line start&stop Straightening and Cut-to-Length system (multistrand straightener and shear), bundling service, final tying and collecting services

DANIELI AUTOMATION fully integrated system for process technology and equipment control

Please contact stella@hanrm.com for quotation.
And free send inquiry to us.
Whatsapp/Wechat:+8615877652925
Website: https://www.hanrm.com


ladle furnace for sale


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Tuesday, November 19, 2019

60,000 TPY Rolling Mill for Sale

rolling mill for sale



60,000 TPY Rolling Mill for Sale



1. General specification


1-1. Production capacity:      60,000 TPY
1-2. Material:                        Billet 150sq. 160sq. 150 x 180sq. etc.
1-3. Product type & size:       Chanel 100 x50 ~ 200 x 90
                                              I-Beam 150 x 75 ~ 200 x 100
                                              Angle  90 x90 ~ 130 x130
                                              Unequal angle 100 x 75 ~ 150 x 90


2. Equipment specification


2-1. Reheating furnace       Capacity-25TPH / Type-3-zone / Skid rail

2-2. Roughing mill(R0)   2H stand / Bearing type / PCD550ø / AC motor 600kw-3.3kv
                            / 1pass

2-3. Discaller 1,2             Plunger pump type 2sets / 100~130kg/cm2

2-4. Roughing mill(R1~R4)  3H stand-1,2,3 / 2H stand-4 / Fiber metal type / PCD465ø
 / AC1500kw-3.3kv / 10pass

2-5. Discaller3,4             Ejector pump type 2 sets / 200~250kg/cm2
2-6. Inter-mill(I0)        2Hstand / Bearing type / PCD500ø / AC1500kw / 3.3kv /1pass

2-7. Finishing mill             2H stand / Bearing type / universal type / PCD800ø
/ DC1000kw / 1 pass

2-8. Cooling bed              Rack type / L32m x W11m / run in / run out / take out

2-9. Straightener              Fix H type / AC150kw / roll

2-10. Cushion bed       Rack type / L32m x W4m

2-11. Cold saw            Fix.- Moving 2 sets 

2-12. Packing conveyor        Chain move conveyor

2-13. Stand Roll & Guide

2-14. Straightener roll

2-15. Electric capacity          5,500kw / 22.9kv
2-16. Electric panel         AC mill motor operating panel / DC mill motor driver
     /Control panel / MCC panel / Local panel / Operating desk

2-17. Water treatment          Pump / Operating panel


Free send inquiry to stella@hanrm.com if any needs.
Whatsapp/Wechat:+8615877652925
Website:  https://www.hanrm.com


hot rolling mill for sale



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Monday, October 28, 2019

Development of Wire Rod Mill

Wire rod mill



    At present, Asia is the fastest-growing economy in the world. However, China is the focus of Asia. Under such a rapid development situation, China's infrastructure has developed rapidly, and various types of wires have been in short supply. The original old-fashioned horizontal rolling mill and double-rolling mill are far from meeting the needs of today's market development in terms of accuracy and quality, as well as in terms of output and control level.

    Therefore, in the late 1960s, with the continuous improvement of the technical level, various new types of high-speed twistless finishing mills were developed in the world, and the wire weight was increased from tens of kilograms to two and a half tons. The final exit speed of the rolling is increased from the original 20m/s to 30m/s to the current 130m/s, and the finished product tolerance is ±011mm.

Due to the smooth surface quality of the wire, the head-to-tail tolerance value is small, and the metallographic structure is more uniform after the water-cooling and the loose-rolling control are cooled, so that the wire can be drawn without heat treatment, thereby greatly reducing the cost and receiving a large number of users. Praise and welcome.

At present, representative finishing mills include internal drive 45-degree wire rod mill, external mesh drive 45-degree finishing mill, X type 45 degree centralized drive finishing mill, Y type three-roll finishing mill, flat roll drive finishing mill, 75 degrees. ×15 degree concentrated transmission finishing mill six types.

Compared with the old-fashioned rolling mill, these rolling mills have the following characteristics:
1. Single-line continuous rolling, convenient and safe operation;
2. High rolling speed, currently up to 130m/s;
3. Convenient for changing rolls;
4. Convenient for changing guides;
5. High, low cost;
6. Wire rod tolerance is small, the surface is smooth;
7. Wire rod has high internal quality;
8. High level of automation control.

In recent years, China's wire rod mill equipment has developed very rapidly.


wire rod mill


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Causes of Surface Cracks in High-Speed Wire Rod Rolling Mill

What is Slit Rolling?

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Causes and Solution of Steel Piling-up in High-speed Wire Rod Rolling Mills?

Bar Automatic Counting System

Rolling Mill Pass Design



Thursday, October 10, 2019

Automatic Control Analysis of Bar Continuous Rolling Flying Shear

flying shear


Flying Shear Start Control


Before rolling, the engineer's station personnel passed the screen set to transfer the cut and cut the size of the flying shear to the PLC. When the HMD detects the steelhead or steel tail signal before the shear, the detection signal is sent to the PLC that controls the scissors, and the scissors PLC then according to the line speed of the rolling piece passed by the basic PLC, the last cut of the scissors The error, and the set length of the cutting head and the tail length, calculate the flying shear start delay time. When the delay time is up, the start command of the flying shear is issued immediately, and the cutting function of the flying shear is completed. For the shredding function of the scissors, the manual start control is adopted, and the operation table manually breaks according to the accident. The shredding function of the scissors takes precedence over the function of cutting and cutting.

Rolling Steel Simulation Analysis Function


When the hot test run is not set at the production site, in order to comprehensively evaluate the linkage effect of each device, it can be completed by cold adjustment; when it is judged whether the cascade blocking function is normal, it can be analyzed by the automatic control model; When it is reasonable, it can be operated in a targeted manner, which shortens the trial hot car time to some extent. At the same time, under the action of rolling steel simulation analysis function, online simulation analysis is realized, and through the continuous improvement of offline simulation function, it provides necessary reference information for the development of transmission inverter equipment program. When the PLC is connected correctly, all module performance can be tested in real-time.

bar mill flying shear


Bar Speed Correction


The rolling speed of the bar is the basis for control and the key to controlling the accuracy of the cutting, so the estimation of the speed of the rolled bar is particularly important. When the calibration function is activated, the speed of the bar is corrected. The speed of the rolled material is generally calculated by the mill control system based on the roll diameter, roll profile and motor type, due to elastic strain and rolled material at the stand roll. The actual reduction on the amount, the calculated value may not be consistent with the actual value. The actual speed is estimated by measuring the elapsed time of the end of the bar from the HMD before the flying shear to the time after the HMD. Alternatively, the flying shear performs shearing, and the measurement starts from the interlacing of the blade to the cutting. The time at which the end reaches the HMD downstream of the flying shear. The ratio of the distance between the HMDs and the measured time gives an estimate of the average speed of a bar during operation. A speed calibration factor is obtained relative to the average of the speeds calculated by the mill control system at the same interval. The speed received from the mill control system becomes a speed calibration factor, thereby obtaining the best estimate of the actual speed of the bar during shearing.

Flying shear Zero Compensation Control


After the end of a cutting process, the flying shear must be accurately parked at the zero position to prepare for the next cut. The zero detection of the flying shear is calibrated by the proximity switch. However, in practice, there is a certain error in the stop position from the original zero points. The error must be compensated to ensure that the speed of the scissors is accelerated to the set shear speed within the specified distance to meet the shear torque requirement. For this purpose, the position of the cutting edge is detected using the positioning code dial. The code wheel adopts 2048 two-phase orthogonal pulse. Each rotation of one wheel, the code wheel count is 0-8192, corresponding to the cutting edge angle of 0-360 degrees so that the angle of the scissors from the zero position can be calculated by counting the pulse of the code wheel. By this value and the angle between the zero point and the shear point, the initial angle of the flying shear can be calculated. Since the code wheel can achieve high precision and can effectively suppress the counting error caused by the vibration, the next cutting edge can be accurately compensated for the next cutting edge error.

In summary, the application of the bar shear system, the main technical performance indicators such as shear accuracy, shear section quality, shear response speed and optimized shear reliability can meet the on-site process requirements, in the rolling mill room Under the premise of normal cascading relationship, stable rolling mill speed and normal operation of all detecting components, the absolute value of the positive and negative shear length of the shearing length generally does not exceed the maximum linear velocity (m/s) of the rolling line multiplied by 5 milliseconds. The application of the automation control system has improved the production level to a certain extent, which is an inevitable trend in future development.

flying shear


More News You May Interesting:

Headless Welding Rolling Process

Bar Rolling Mills Water Cooling Technology

How to Improve the Thermal Efficiency of the Reheating Furnaces?

Causes of Surface Cracks in High-Speed Wire Rod Rolling Mill

What is Slit Rolling?

Failure Analysis of Cold Mill Roll

Causes and Solution of Steel Piling-up in High-speed Wire Rod Rolling Mills?

Bar Automatic Counting System

Rolling Mill Pass Design



bar rolling mill flying shear


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