Cold Rolled Steel Sheet in Coil
Cold rolled steel sheet in coil is used for many different applications. For example it is suitable for automobile manufacturing and domestic appliances.
It requires minimum dimension tolerances and large coil weights. Furthermore it needs to have good weldability and crack resistance. It is also often used for infrastructure projects like pipelines (water lines and heat supply networks) and industrial facilities.
Thickness
The thickness of cold rolled steel sheet in coil is a vital piece of information for any metal project, from constructing an aerospace component to welding a railroad track. A small change in gauge size can significantly impact raw material yield and remove costs from fabricating your finished product. The best way to ensure that you’re ordering the right amount of materials is to use a Cold Rolled Gauge Chart.
After the hot rolling process, the coiled steel sheeting spends a considerable period of time in open storage. This exposes it to the elements, including rain and possibly a polluted atmosphere. When the steel is unwrapped for loading onto and discharge from an ocean carrier, rust damage can occur. This is because free moisture trickles across the plating and seeps through the protective packaging cold rolled steel sheet in coil into the coil. This can cause varying degrees of loss, and heavy claims are sometimes the result.
After storage, the coiled steel is subject to a series of processing operations, known as cold reduction and temper rolling. This process gives the steel closer dimensional tolerances and a smoother surface finish. These characteristics make it ideal for use in projects where precision is crucial, such as in construction or manufacturing metal containers and household appliances. The material can also be shaped using a variety of forming processes, such as sizing, breakdown, roughing, semi-roughing, turning, and grinding.
Length
Cold rolled steel in coil form is an ideal choice for projects that require extremely precise dimensional tolerances. The cold rolling process compresses the metal to a tighter tolerance than hot rolled steel, increasing its strength and improving its corrosion resistance. This type of steel is used to fabricate products such as garage doors, home appliances, metal furniture and aerospace components.
To ensure the best results, cold rolled steel must be stored in clean and dry environments. It is also important to reduce humidity levels and possibly provide ventilation to prevent the steel from corroding during shipment and storage. This is because steel corrosion accelerates at relative humidity above 60%.
Since cold rolled steel is prone to corrosion, it is generally lubricated with rust-preventative oil at the temper mill prior to shipping. This oil helps protect the steel from corrosion and rust during shipment, handling and warehousing. Curtis Steel maintains climate-controlled warehouses to guarantee that our steel sheet and coil products arrive at their destination in prime condition.
During loading and discharge from ocean carriers, Tinplate Sheet Manufacturer steel coils should be carried in “face stow”, meaning that the winding axis of the coil is placed in the longitudinal axis of the ship. This method helps to avoid damage during the handling of cargo, especially against other coils on the same vessel.
Width
Cold-rolled steel can be used for a number of purposes, from kitchen appliances like refrigerators and washing machines to industrial machinery and automobiles. It also has corrosion-resistant properties and is available in a variety of finishes. In addition, cold rolled steel offers superior gauge accuracy and physical characteristics, making it easy to work with in fabrication.
Cold rolled steel is rolled at room temperature, which allows for greater precision in terms of thickness and dimensions. Additionally, it can be annealed, which helps to increase its tensile strength and improve its resistance against deformation. Cold rolling also helps to reduce the risk of handling damage, such as ovalisation, which can occur when a coil is lowered from a height.
The resulting product is usually smoother and more corrosion resistant than hot rolled steel. In addition, it has a high degree of gauge accuracy and can be made to precise sizes, including narrow widths. It also has a better finish, which makes it easier to paint and coat. It is also easier to work with than hot rolled steel, as it is less brittle and has higher yield strength.
It is also easily cut, punched, drilled and formed. These qualities make it an ideal material for mechanical production, such as automotive parts and electrical components. The steel is also highly recyclable and has a low carbon content.
Surface
Cold rolled steel sheets have a smooth, deoxidized surface finish and are free of mill scale. This helps them maintain a high degree of gauge accuracy and consistency as well as an optimal physical condition for handling.
These cold products also offer better tolerances, concentricity, and straightness than their hot rolled counterparts. They are commonly used for structural support in building constructions as well as piping that carries oil, gas, water, and heat.
Their superior surface finish allows them to be easily worked using roll forming. This process involves passing a strip of metal through multiple sets of rolls that perform incremental parts of bending the sheet into the desired shape. The material is then sheared into short lengths or coiled into bundles for distribution to fabrication customers.
The cold-rolling process also increases the hardness and strength of these materials, thanks to the recrystallization of grain sizes and improved mechanical properties. These features make these sheets a good choice for many applications, such as automotive body panels, appliances, and decorative components.
There are several grades and finishes of cold rolled steel, depending on the manufacturer’s production methods. These include SPCC, SPCCT, and 2B, among others. The suffixes indicate the type of finishing process used: SPCC stands for pickled and cold-rolled commercial quality; SPCCT stands for cold rolled commercial with guaranteed tensile strength; 2B indicates a slightly rougher surface finish that retains lubricants, making it suitable for stamping and moderate drawing.