The rolling process is the most common industrial process, which is used for making large length cross section like sheets and plates of steel and aluminum for structures. Rolling mills are used for completing the rolling process. These are available with various steel roll manufacturers in a variety of shapes and sizes as per requirement of the process. The number of the rolling mill depends on the demand of the process.
What Material Does the Steel Roll Manufacturers in China use for Creating Steel Rolls?
Roll forming is a process in which a sheet of metal usually steel is passed through regular rolls until the required cross-section profile is achieved. The sheet is plastically deformed along a linear axis on room temperature environment. The process is used for creating parts with more length, and useful in manufacturing of large quantities of a particular shape.
Every roll in the process has a specific function in the making of the piece. At every stage, there are minor changes in the configuration of the metal. The size of the roll depends on the metal type, thickness, and formability. Hence, a roll forming process utilizes the following material;
Ferrous Metal
It comprises any metal, which has a bivalent iron compound. Ferrous metals can include steel, stainless steel, and galvannealed. Various steel roll manufacturers in India utilize these to create steel rolls.
1.Steel
Steel comprises of iron and is malleable below its melting point by one temperature range without any heat treatment. It is free from any slag, and between 0.05 and two percent of its weight is carbon. It can contain small amounts of silicon, manganese and trace quantities of sulfur as well as phosphorous.
2.Stainless Steel
It contains a high percentage of chromium, which has a high staining and corrosion resistance. Stainless steel is resistant to weak mineral acids, oxidation, organic acids, and other caustic material.
3.Galvannealed
It is a steel sheet, which has been coated on both the sides with zinc and then treated with heat to give the surface of the metal a zinc-iron alloy coating. Many mill roll manufacturers utilize galvannealed to create high-quality steel rolls.
Non-Ferrous Metal
The non-ferrous metals do not have any iron in their chemical makeup, some of the most common non-ferrous metals used in roll forming include;
1.Aluminum
It is a soft, malleable, and lightweight metal with high resistance to corrosion. Aluminum, when exposed to air forms a thin layer of aluminum oxide for protection from wear.
2.Brass
Brass is an alloy of copper and zinc, which features a gold-like color and high resistance to corrosion. The different types of brass include bronze, the alloy of copper and tin. Brass is highly malleable and used in many applications. Various rolling mill rolls manufacturers utilize brass to make corrosion-resistant rolls.
3.Copper
Copper is a ductile metal known primarily for being a good conductor of electricity. It is used in building material and is a primary component in many non-ferrous alloys.
4.Lead
It is primarily used in many building supplies including roofing metal, gutters, gutter joints, and others.
5.Composites
These are the materials made from two or more materials and have physical and chemical differences.
What are the Different Types of Rolling Mill Rolls?
As per the requirement of the process and arrangement of the rolls, the rolling mill rolls can be divided into the following categories:
1.Two High Rolling Mills
It consists of two rollers, which rotate in the opposite direction for the desired movement of the workpiece. The workpiece is fed between the rollers, which apply a full force, and tends to deform a workpiece and convert it into the desired shape. If you want a robust and quality two high rolling mill, you can look for mill rolls manufacturers to know which one suits your purpose.
The two high rolling mills are further divided into two more categories namely high non-reversible machine in which rollers rotate in only one direction, and the workpiece can be fed in only one direction. On the other hand, the second one high reversible machine, which both rollers rotate in both directions.
2.Three High Rolling Mills
The Three High Rolling Mills comprises of a roll stand with three parallel rolls one above another. The adjacent rolls rotate in the opposite direction to pass the material between the top and middle roll in single direction, and the bottom and central roll in the opposite direction. The workpiece is rolled on both forward and return passes. The workpiece passes through the bottom and intermediate rolls, and returns between the middle and top rolls. Various steel roll manufacturers provide top-quality roll mills to meet every type of industrial requirement.
3.Four High Rolling Mills
The Four High Rolling Mills have a roll stand with four parallel rolls placed one above another. The top and bottom rolls work in the opposite direction. The two in the middle are smaller than the top and bottom rolls, which are also known as backup rolls.
4.Tandem Rolling Mills
The Tandem Rolling Mills comprises of a set of two or three strands of roll set in parallel alignment. A continuous pass might be possible through each one with the change in the direction of the material. Many mill rolls manufacturers provide quality tandem rolling mills to various industries.
5.Cluster Rolling Mills
Cluster Rolling Mills is a first four high rolling mills, where each of the working rolls is backed up by two or more larger rolls for rolling hard material. At times, one might need to employ work rolls of minimum diameter.
