Cold drawn steel bars like theses are normally available in a variety of shapes such as flat, square, hexagonal, round, as well as special company defined shapes. These bars are fundamentally carbon and alloy steel bar products. An alloy is primarily a uniform mixture of two or more metals combined and are mostly manufactured by melting their constituent metals. Their properties are also dissimilar from their parent metals and are generally known to have greater strength and durability. You might also be wondering why we refer to the process as a ‘cold’ finished. Well, the process mainly aims at making the rods or bars of a well proportioned and steady thickness as well as diameter. So how and why do steel companies and manufacturers go about this process? These cold-finished steel bars are fashioned by cold finishing preceding hot-wrought bars which may be by a series of process that can either be put into operation in combination or be executed alone. The processes involve cold drawing, cold forming, grinding, or polishing. The big idea behind following these steps is to obtain such a yield of steel bars that have greater tensile strength and can be drawn either into straight length bars or coils – each being perfectly uniformed.
The ‘how’ part of your question has been answered, now comes the ‘why’ part. Before the use of the cold finished process, hot rolled steel was manufactured and were heated up red-hot and pushed through rollers that constrict the metal. This molds it into a particular profile which usually depended on the shape of the rollers. The process took a much much longer time and it wasn’t long before companies came to the conclusion that the hot rolled process did not provide products with a smooth surface, uniformity,
or sharp crisp corners – which was due to a tough oxide layer being formed when the steel was left to cool down – being exposed in the open air after experiencing the high temperatures. All of which the cold finished process is able to provide.How can companies really benefit by the use of cold finished steel bars? Steel buyers do see how fine the steel is, especially if they specialize in plating and shafting. Not only that but also the tolerance, machine ability, and strength are taken into account. Cold finished steel has around 80% boost in yield strength and 30% in the over all tensile strength.
. Every steel company’s goal is to provide unsurpassed service, the highest quality products, and deliver unrivalled value. The cold finished steel bars are of particular use in precision shafting and in plating due to their dimensional mastery, exceptional surface finish, and straightness. So you see, these are just some of the main reasons why cold finished steel processing is an ideal way of processing your steel bars. Understanding the process like the “hows” and “whys” of the cold finished processing will help you make an educated decision when it comes to choosing the right type of processing procedure for your metal works.