The company has a group of cooperation teams engaged in the Volkswagen Specified Steel industry for many years, with dedication, innovation spirit and service awareness, and has established a sound quality control and management system to ensure product quality.
Once steel is heated past its recrystallization temperature (over 1700º F) it can be easily formed and sized. If the material isn’t processed further at room temperature, it’s considered hot-rolled. The steel that goes through further refinement processes is categorized as cold-rolled. Explore further metal rolling methodology differences, capabilities, and tolerances below!
As hot-rolled steel cools, it tends to shrink and form asymmetrically, allowing for more variation in shape and size. For this reason, hot-rolled steel is used in projects where the finished product doesn’t have specific dimensional requirements.
For example, one of the most commonly recognized forms of hot-rolled steel is sheet metal, which is frequently used in creating air ducts and motor vehicles. In these applications, surface finish and proportions don’t need to be precise.
As a result, hot-rolled steel is typically cheaper in price simply because it doesn’t involve any further processing. Since it doesn’t require any reheating, production costs for hot-rolled steel are much lower.
That being said, cold-rolled steel needs reheating to further refine its structural properties. In order to achieve more exact dimensions and surface quality, the metal is re-rolled at a lower temperature. This supplemental rolling results in more specified attributes including exterior finish, durability, and dimensional parameters.
PA Steel, for example, carries a variety of cold-finished bars in a range of grades and finishes for businesses all over the eastern United States. This equipment is used for creating products such as furniture, garages, and home appliances.
Although it’s typically up to 20% more durable than hot-rolled, cold-finished steel is limited to basic square, round, and flat shapes. Despite its improved resistance, the additional processing performed on cold-rolled metals may make it more susceptible to internal stress. Finalized materials need to be stress relieved prior to grinding or cutting to avoid potentially volatile warping or distortion.
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