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Cold rolling is a work hardening procedure that is commonly used to process stainless steel to change
the structure of the metal. As a raw material, cold rolled stainless steel is used in a wide range of medical,
aeronautical, and automotive applications. Continue reading to discover more about cold rolled steel,
including what it is, how it is made, and what it may be used for.
The major goal of cold rolling steels is to reduce the thickness of hot rolled steel strips
(typically in the range of 1.5 mm to 5 mm) to thinner thicknesses (generally in the range of 0.12 mm to 2.5 mm)
that are impossible to achieve in a hot strip mill.
Cold rolling is used for a variety of purposes, including increasing the surface polish of steels, improving thickness
tolerances, offering a variety of 'tempers,' improving physical qualities, and preparing the strip for surface coating.
Cold rolling of hot rolled steel strips is done at room temperature, below the recrystallization temperature.
The hot rolled strip is normally not heated before rolling in the cold rolling procedure. Frictional energy,
on the other hand, is transformed into heat at the strip's contact surfaces. This heat might raise the temperature
of the strip being rolled in a quick adiabatic operation from 50 to 250 degrees Celsius.
Processing steel strip through a rolling machine with an entry end reel for uncoiling the pickled hot rolled coil
and an exit end reel for coiling the cold rolled strip results in cold rolling of pickled hot rolled strip. In the middle,
one or more (usually up to six) rolling mill stands are used to perform the cold reduction. Vertically stacked rolls
powered by massive motors are used in each mill stand to apply tremendous compressive pressures to the strip.
Mill stands can be two, four, or six feet tall. 4-high stands are more commonly employed since they provide the
greatest benefit over the other two varieties.
Cold rolled steel, abbreviated as CRS, is well-known for being a highly ductile material that is perfect for
applications requiring precision. It can be found in a variety of products, including domestic appliances, furniture,
lockers, and filing cabinets. CRS is frequently utilised in the construction of garages, steel sheds, and other industrial
structures.
Precision manufacturing of a cold rolled stainless steel coil is possible, allowing the metal to be produced to
exceedingly tight tolerances. We can produce several levels of temper by work hardening stainless steel through
cold rolling, such as quarter-, half-, and full hard.
The amount of cold work done on the steel determines the hardness level. Hard stock reduction is larger in quarter-,
half-, and full hard stocks (sometimes up to 50 percent ). This raises the yield point while lowering the steel's ductility.
Without breaking, quarter-hard steel can be bent back over itself, whereas half-hard steel can be bent at a 90-degree
angle and full-hard steel can be bent at a 45-degree angle. Cold rolled metal is frequently utilised in applications that
require the metal to be bent without breaking.
Construction, surgery, kitchen basics, and other industries employ stainless steel cold rolled coil. External bannisters
and handrails can be made out of 304 stainless steel, which has good processing properties and weldability.
316 stainless steel is ideal for kitchen basics like equipment, cutlery, and cookware, and it offers a wide range of forms
and corrosion resistance. 316L stainless steel is ideal for medical and surgical applications that require a high level
of consistency.
Due to its favourable qualities such as corrosion resistance, enhanced formability, weld ability, and aesthetic appearance,
the market for stainless steel strips is predicted to grow, resulting in a growth in demand from various end-use industries.
The increased demand for product penetration in consumer base products such as refrigerators, ventilation systems,
dishwashers, sinks, and prep tables is likely to drive future growth possibilities for stainless steel strips. In the coming year,
the stainless steel strips market is likely to see considerable expansion in these applications. However, disruptions in
supply and fluctuation in the cost of raw materials used to manufacture stainless steel strips may limit the market's expansion.
Due to the high presence of multinational companies around the globe, as well as the existence of a large number of local
and regional market competitors, the global steel strips market has become considerably fragmented. Because of the rapid
growth of end-user sectors in Asia Pacific, such as building and consumer goods, the region is projected to have a significant
proportion of the stainless strips market in terms of consumption. India, China, and South Korea are likely to lead the market
for stainless steel strips due to their rapidly increasing automotive, construction, and other manufacturing industries.
Benefits of Cold-Rolled Steel
The advantages of cold-rolled products include:
Better precision: Compared to hot-rolling, cold-rolling creates a more precise end product by preventing warpage and
adhering to much tighter tolerances. The accuracy allows Bekaert to produce cold-rolled steel profiles to customer specifications.
Grain refinement: Cold-rolling enhances the grain in steel.
Smooth surface finish: Steel processed by cold-rolling has a smoother finish as opposed to the rough surface you get from
hot-rolling. Profiles with this smooth surface are ideal for various applications.
The Process of Creating Cold-Rolled Steel Wire
cold-rolling process begins with raw steel material in rod form. We place the rods through mill stands, also called tandem mills.
The mills flatten and elongate the rods. As the steel rods travel through the mill stands, the mills work faster, and the rods continue
to increase in length. The finished steel wire comes out of the other end of the final mill stand.
Cold-Rolled Products
Products
Cold-rolled steel flat wires, shaped wires and larger metal profiles are available in continuous coils with no welds up to
5,500 pounds (lbs.), or 2.5 Metric Tons (MT). can also package cold-rolled steel in cut lengths from as short as 0.250 inches,
or 6.35 millimeters (mm), to over 20 feet (ft.), or 6 meters (m.).
Applications for Cold-Rolled Steel
Cold-rolled steel is valuable to industries and applications where precision, strength and surface quality are essential.
Applications include:
Architectural grates/screens/panels
Automotive components throughout the vehicle
Agriculture and industrial equipment
Appliance/white goods
Metal furniture and hardware
Stamping, coining and machining applications
Energy-related applications
Consumer goods
Why Choose Rolex Metal as Your Cold-Rolled Steel Wire Supplier?
Rolex Metal has created high-quality cold-rolled steel wire for various markets in India & Europe since 1970.
Our global reach, expert staff, top-of-the-line equipment and proven processes allow us to deliver exceptional work
for your company. Other reasons to choose Rolex Metal include:
One-Stop Shop Capabilities
Rolex Metal competencies are all available under one roof. We can create various shapes and profiles to specification
in our facility, going from the raw material to the finished product.
Cold-Rolled Steel Profiles to Specification
Where other manufacturers only offer basic shapes, Rolex Metal can give you the shape, size, profile, metal type,
diameter and surface finish you need. By creating products to specification, we eliminate the need to machine the
part further once you receive it.
Uniform Formability
Rolex Metal performs heat treatments, either annealing to soften steel for forming applications or hardening and tempering
to increase the strength and durability of the steel. Our metallurgists and process engineers will work with you to determine
the optimal hardness or tensile properties for your application.
Diversity of Metals
Rolex Metal processing capabilities go beyond low-carbon and high-carbon steels. We also process alloy steels,
stainless steels, bearing grades, nickel-based alloys and nonferrous metals such as brass, copper, bronze, aluminum,
titanium and other exotic alloys. Rolex Metal rolls these metals and alloys at temperatures below their recrystallization
point to produce the desired effects on physical properties and surface finish.
Industry-Leading Equipment
Rolex Metal plant in Mumbai, India, has several types of cold-rolling equipment sourced from leading engineering
companies. Our machinery includes:
Shaped wire tandem rolling mills
Flat wire tandem rolling mills
Shaped wire single stand rolling mills (capable of shaped or flat pass)
Reduced Waste
Rolex Metal uses cold-rolling methods that produce as little waste as possible. As a result, your company will get
the finished product in the desired form for your application.
Contact Rolex Metal for Cold-Rolled Profiles Today
Rolex Metal is a cold-rolling industry leader ready to partner with you for cold-rolled profiles and wires. At Rolex Metal,
our trained technicians and quality-certified plants allow us to manufacture high-precision cold-rolled steel profiles for
your applications.
We take the time to understand your specifications and collaborate with your engineering team to create cost-effective
final products. Rolex Metal has a broad range of manufacturing capabilities, making us an excellent development partner
for your cold-rolled steel profile needs.
OUR STANDARD GRADES
Stainless steel:
1.4005 / AISI 416
1.4301 / 1.4307/ AISI 304/L
1.4162 / Lean Duplex
1.4021 / AISI 420
1.4305 / AISI 303
1.4462 / Duplex
1.4028 / AISI 420
1.4401 / 1.4404/ AISI 316/L
1.4542 / 17-4 PH
1.4057 / AISI 431
1.4571 / 316 Ti
1.4545 / 15-5 PH
1.4104 / AISI 430F
1.4828 / AISI 309
1.4841 / AISI 310
Square bars
Cold-drawn acc. to EN 10278/ Tolerance h11/ ASTM A-484
Sizes: 8 mm - 100 mm, Lengths: 3 m - 3,2 m
Inch sizes: 3/8" - 4", Lengths: 11 ft - 14 ft
With MTC acc. to EN 10204/3.1
Hexagonal bars
Cold-drawn acc. to EN 10278/Tolerance h11/ASTM A-484
Sizes: 8 mm - 100 mm, Lengths: 3 m - 3,2 m
Inch sizes: 3/8" - 4", Lengths: 11 ft - 14 ft
With MTC acc. to EN 10204/3.1
The international demand for stainless long products, titanium, and nickel alloys determine the scope of our production
program. On our production lines, we roll and draw high-quality standard and special profiles. Whether for the chemical industry,
mechanical engineering, or medical devices − Rolex Metal offers stainless steel profiles for technically demanding applications.
At Rolex Metal we produce standard and special profiles according to international standards.
The portfolio includes stainless flat, square, and hexagonal profiles – hot-rolled and cold-drawn. We also manufacture tailor-made
solutions of the highest quality according to customer requirements.
Dimensions of hot-rolled stainless steel profiles: square: 10 to 100 mm; flat: width 12 to 200 mm, thickness 3 to 80 mm;
special profiles according to customer drawing; other dimensions on request.
Dimensions of cold-drawn stainless steel profiles: square: 8 to 100 mm; hexagonal: 8 to 100 mm; flat: width 12 to 200 mm,
thickness 3 to 80 mm, other dimensions on request.
In addition, custom-made products and special profiles can be provided according to exact customer specifications.
Inspection & Approval Certificates : C/W Certificate (Calibration Works Certificate) EN 10204 3.1 / DIN 50049 3.1 / ISO 10474 3.1 Mill Test Certificate,
NACE HIC TM-0284 / NACE MR-0103 / NACE MR-0175 / ISO 15166, BS EN 9001, BS EN 9100, AS 9100D, IATF 16949, NADCAP Certified, CE Marked,
European Pressure Equipment Directive PED-2014/68/EU, AD-2000-WO, ASME Boiler & Pressure Vessel Code Section-II Part A Edition 2019,
API 6A (American Petroleum Institute), with 3.2 Certificate duly Certified & Approved by IBR (Indian Boiler Regulations), LR Class (Lloyd’s Register),
GL (Germanischer Lloyd), BV (Bureau Veritas), DNV (Det Norske Veritas), ABS Class (American Bureau of Shipping), SGS, TUV, RINA,
IR Class (Indian Register of Shipping), NORSOK Approved Standard M-630, M-650 Rev.3 For Ministry of Defence, DRDO, Indian Ordnance Factory,
Bharat Electronics Limited (BEL), Hindustan Aeronautics Limited (HAL), Mishra Dhatu Nigam Limited (MIDHANI), Bharat Dynamics Limited (BDL),
Aerospace, Electric Vehicles, Automotive, Automobile, Railways, Medical Equipments, Military Missiles, Energy, Power Sector, Electronics
If you have any requirement of above items, please feel free to contact us
Regards,
CONTACT PERSON :
MUKESH SHAH
Director
Mobile No. 0091 – 9820292499
Email – marketing@rolexmetals.com
ROLEX METAL DISTRIBUTORS
57-A Khatargalli
Thakurdwar
Mumbai – 400 002 India
0091-22-23858802
0091-22-23823963
0091-22-23898724
marketing@rolexmetals.com
www.rolexmetals.com
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