SMS No-twist Wire Rod Mill

SMS No-twist Wire Rod Mill

SMS designed a set of rocker arm type high-speed wire rod mill with adjustable roll gap. There are two types of rolling mills layout. One is similar to Morgan type wire rod mill. The adjacent frames are arranged at 90 degrees and 45 degrees alternately with the horizontal plane. The other is that the adjacent frames are still arranged at 90 degrees, but the other is that the adjacent frames are still arranged at 90 degrees with each other. They are at 15/75 degrees above and below the horizontal plane.

According to rolling different steel grades, SMS Group developed three kinds of wire rod finishing mills:

• High-pressure reduction finishing mill for common steel grades with elongation of 14.5%.
• The elongation of the finishing mill for high-quality steel grades reaches 9.54%.
• The elongation of high-grade alloy steel can reach 6.93% in the finishing mill.

The three types of finishing mills have the same basic design, but the reduction rate of each stand is different. So the speed distribution is different. The low reduction rate is used for rolling high deformation resistance steel, while a very high reduction rate can be used for finishing mill when rolling common carbon steel. SMS finishing mill can roll threaded steel bars with diameters of 5.5-16 mm and 6-14 mm, in addition to wire rods with diameters of 5.5-16 mm. The unit has the following characteristics:

The structure of all stand of wire rod finishing mill is the same, so it can be interchanged, and the spare stand can be reduced, which reduces the investment accordingly.

The diameter of the roll ring is standard 210mm. Compared with other roll rings with smaller diameter, it can reduce the rotational speed of the driving system and improve the service life of the rolling groove.

With hydraulic quick clamping and loosening device, the roll ring part can be quickly changed, which can ensure the high productivity of the finishing mill.

The roll shaft installed in the rocker arm can adjust the roll gap symmetrically in a wide range, so as to keep the rolling line constant, which is very advantageous for stabilizing the rolling process, reducing production accidents, and improving the mill operation rate.

The rocker arm mechanism is used to increase the cross-section coefficient of the roller bearing, improve the stiffness and strength of the rolling mill, thus improving the precision of the product and the rolling force of the finishing mill.

The driving system does not use a coupling to prevent vibration.

Compared with the standard roll ring, the life of the tungsten carbide roll ring groove is increased from 400 tons/mm diameter to 900-1000 tons/mm diameter, and the time interval of roll ring replacement is greatly increased.


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

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Advanced Technology of Bar Rolling Mill Production Line

Advanced Technology of Bar Rolling Mill Production Line

1) Adopting the regenerative walking beam heating furnace with side-in and side-out hot charging and cold charging, which improves the waste heat recovery rate of exhaust gas and saves energy consumption; the hot charging process effectively uses the residual heat of billet and reduces Gas consumption. The heating furnace capacity is 160t / h (cold billet), 200t / h (hot billet).

2) The hot billet produced by the steel-making continuous casting machine is sent to the bar production line through the roller table to realize the hot feeding and hot charging of the continuous casting billet. The hot charging temperature ≥650 ℃ up to 900 ℃. The rate of hot delivery and hot charging is over 87%.

3) The equipment in the workshop adopts an elevated layout, and the rolling line equipment is arranged on the + 5.0m concrete platform in the workshop.

4) The main rolling mill of the rolling line adopts the structure of the high rigidity short stress line rolling mill without archway, and the DC motor is separately driven. The full line rolling mill is arranged alternately and vertically, without twisting rolling, and the micro rolling is used for rough rolling and intermediate rolling. The looper tension-free rolling is adopted to ensure the high precision of the product.

5) The rolling mill takes full continuous casting billet (160 * 160 * 12000) as raw material and adopts full continuous rolling. The rolling mill has high strength and large motor power. The motor power of the rough rolling unit is 618KW, the maximum unilateral rolling pressure is 2000KN, the unilateral maximum rolling torque is 120KN • m, and the rolling capacity is one to two times that of the same type of domestic rolling line. It is suitable for high-speed and low-temperature rolling and can meet the control rolling requirements of various steel types.

6) The rolling mill adopts a hydraulic traverse device to quickly change the pass type; the rolling mill adopts an overall frame quick replacement device. The assembly and adjustment of the standby machine are preset in the repair room of the rolling machine, which can greatly shorten the time of changing varieties.

7) Adopt the split rolling production process. φ10-φ16 rebar adopts three-cut production technology. The φ18-φ22 rebar adopts the two-split production process. The φ22 two-split is currently the largest two-split rolling in China.

8) The power of the main motor of the finished frame and the front frame of the finished rolling unit is 1400KW (other frames are 1000KW), which is higher than the motor power of other domestic production lines, which can ensure that the large-size products are cut and rolled.

9) After finishing rolling, a controlled cooling device is built, which can realize the controlled rolling and controlled cooling process and improve the mechanical properties and strength level of the product.

10) The DC motor is powered by a digital thyristor device to realize digital control, which has high control accuracy and good production stability. The rolling line equipment is controlled by an advanced computer system, with complete control functions and reaching the domestic advanced level.

Free send inquiry to stella@hanrm.com if any needs.

Whatsapp/Wechat:+8615877652925

Website:  https://www.hanrm.com

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Direct Rolling Technology without Heating

Direct Rolling Technology without Heating

Direct rolling of continuous casting billet is that billet is heated by electromagnetic induction device at the opposite corner without reheating furnace, and then directly fed into the rolling mill for rolling. The technology of direct rolling without heating needs neither heating nor supplementary heating, which realizes an important innovation in the production process of bar and wire rod.

1. Technical Points:

1) Through the comprehensive control of cooling water flow, distribution and casting speed in the mold and secondary cooling zone, the continuous casting process is optimized and the slab temperature is increased.

2) Establishing the prediction model of solidification and temperature of continuous casting slab and the feedback control system of slab temperature, making the on-line prediction of the safe distance from solidification endpoint to slab cutting point, in order to prevent steel leakage accident.

3) Take measures such as increasing the speed of conveying roller, reducing waiting time and covering insulation cover to transport the cut-off slab from the continuous caster to the roughing mill quickly, so as to reduce the temperature loss of the slab and ensure the start-up temperature.

4) Optimizing the load distribution of roughing mill, improving the cooling rolling capacity of roughing mill, and avoiding the influence of overload of individual passes on the implementation of the heating-free rolling process.

2. The Main Advantages:

1) The reheating furnace is omitted to realize energy saving and emission reduction. Compared with conventional hot delivery, hot charging and cold charging furnace, energy saving per ton of steel can reach 20 kg and 40 kg standard coal respectively. According to the calculation of 2.6 tons of carbon dioxide and 8.5 kg of sulfur dioxide emissions per ton of standard coal, the production line of bar and wire rod with an annual output of 1 million tons can save more than 20,000 tons of standard coal every year, reduce more than 50,000 tons of carbon dioxide and reduce more than 8,500 tons of sulfur dioxide. The economic and environmental benefits are enormous.

2) The heating-free process avoids the slab staying in the heating furnace for a long time, reduces the burning loss, and improves the yield by 0.5-1.5%. According to the average value of 1%, the production line with an annual output of 1 million tons can save 10,000 tons of timber.

3) After exercising the heating-free process, the start-up temperature can be between 920 and 980 C, and the start-up rolling in this temperature range is conducive to improving the strength of the product. According to statistics, the yield strength of the product can be increased by 10-15 MPa after exercising the heating-free process, which is beneficial to avoid the appearance of Widmanstatten structure and improve the internal quality of the product.

4) In addition, the technology has the advantage of saving cooling water for continuous casting, reducing maintenance and operation cost of reheating furnace and avoiding overhaul and shutdown of the reheating furnace.

At present, China's bar and wire production capacity is seriously excessive, the whole industry has entered the era of marginal profits, energy-saving and environmental protection have become a hard indicator. Under the new normal conditions, direct rolling technology without heating can reduce costs, save energy and reduce emissions, which has positive significance.

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Hot Rolling Mill Rebar Mill (70,000 Tons/Year) for Sale

Hot Rolling Mill Rebar Mill (70,000 Tons/Year)  for Sale

We have following rebar rolling mill for sale



1.General specification

Product  capacity             70,000tons / year (13ømm case)

Products                     Rebar   10, 13,16, 19, 22ømm

Material                      Ship plate –mild steel

Equipment maker             Wooshin, Dongil, Daehwa, Hyundai–Korea

Mfg. date                     Oct. 2010



2.Specification of equipment

1).Reheating furnace         

Capacity                  15ton / hr.

Material : Steel scrap mainly from ship plate

  Type   Pin pushing type / 2 zone / BC oil

  Burner                    2 zone / BC oil / 1150℃

  Pusher                    Hydraulic pump

Recuperator

  Dust collector

  Caterpillar conveyor

Not available for dismantling.


2).Roughing mill - 9pass

  Motor                     AC 750kw / 3300v / 12P / 60hz. / Start resister

  Main reducer / 3-pinion / 3-Universal joint / 3high-stand x 2 sets / roll

Table                     Kant roll table

  Lubricant

3).Intermediate mill– 2pass

Motor                     AC 375kw / 3300v / 12P / 60hz. / Start resister

  Main reducer / 3-pinion / 3-universal joint / 3high-stand / roll

  Table                     Roll table / belt

  Lubricant

Flying shear               Cutting cap. - Max. 25mm x 2sets

4).Finishing mill– 4pass

  Motor                     DC 200kw / 440v / 60hz. x 4sets

  Main reducer / 2-pinion / 2-universal joint / 2 high-stand / roll x 4sets

Lubricant

5).Cooling bed

   Size                      45m x 6m

Type                     Working type

   Trough-4 / plate / run in roll table / kick off lever / state rack / moving rack / gathering conv.

           / take out device / run out roll table



6).Cold shear

  Type                       air C & B / down cut

  Knife                       400mm

Capacity                    300ton

7).Regular size handling system

   Traverser / chain conveyor / manual binding

8).Short size handling system

Traverser / chain conveyor / manual binding

9).Air compressor

10).Cooling water device

11).Electric panel & control desk

12).Shearing machine

    Cutting capacity             60t x 1,500Lmm

    Knife                       1,800 Wmm

Details will follow on request.


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



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186,000 Tons/Year 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

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Wire Rod Mill | 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

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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Bar and Wire Rod Rolling Mill For Sale

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.

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).

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.

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

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600,000 TPY Rebar Rolling Mill | Section 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

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





More News You May Interesting:

Why does the Steel Bar Bend after being Cut by Flying Shear?

Morgan Wire Rod Mill

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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

60,000 TPY 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

More News You May Interesting:

Why does the Steel Bar Bend after being Cut by Flying Shear?

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?

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Advantages of Hot Rolling Mill

Advantages of Hot Rolling Mills

According to the hot rolling mill manufacturer, the rolling mill is indispensable equipment in modern metal rolling, and we can use two different methods. For example, you can choose hot rolling or cold rolling. Obviously, the two methods are relative.

In fact, what we mean by hot rolling is mainly a process in which rolling is completed above the recrystallization temperature. Roll mill professional manufacturers believe that the use of hot rolling can enjoy some benefits, then, do you know the main advantages of which? Let's take a look at the main content of this aspect.

The mill manufacturer explained that the advantages of the hot rolling mill can be summarized into three aspects. First, the use of hot rolling can significantly reduce energy consumption and reduce costs. In addition, high-metal plasticity can be exerted during hot rolling, and the deformation resistance generated is small, and the metal can be effectively prevented from being severely deformed.

According to the rolling mill manufacturer, the second advantage of using hot rolling is that it can properly improve the processing performance of metals and alloy materials. That is to say, it can crush larger crystal grains and reduce the occurrence of cracks, which is equivalent to reducing defects in the casting process and improving the processing properties of the alloy.

The last advantage is that the hot rolling process is more conducive to continuous and automated. The rolling mill professional manufacturer explained that in this process, we generally use large ingots to reduce the amount of rolling, so it can also improve the efficiency of the work while creating favorable conditions for increasing the rolling speed.

The above is the main advantage of the use of hot rolling by the rolling mill professional manufacturers. I believe that everyone has a clear understanding of this content.