We are continuing our series of articles discussing the differences between hot rolled steel and cold rolled steel in precision CNC machining processes. Our previous article covered the surfaces, strength, and internal stresses of each. Today, we will examine three more differences between these two metals.
Recrystallization
The recrystallization points of hot rolled steel and cold rolled steel are very different. Hot rolled steel processes at temperatures above 1750 degrees Fahrenheit, a much higher temperature than the recrystallization point of steel. Cold rolling begins when the metal is able to shed old grains and form new. A process called annealing is then added. Annealing involves heating the product to above the recrystallization point to negate any reduction of material strength.
Bending
Cold rolled steel has defined corners and edges as well as squared angles. Hot rolled steel, on the otherhand, is often slightly distorted.
Cost
Hot rolled steel is often much less expensive, primarily because the process takes less time and much easier to shape than cold rolled steel.
JW Machine is a premier machine shop located in Central Florida. As an ISO 9001 / AS 9100 certified machine shop, we are dedicated to providing top quality precision CNC machining services to our valued clients. We work with numerous industries including defense, aerospace, and OEM parts to deliver their prototypes to production manufacturing and contract manufacturing projects. Some of our specialties include small part machining, close tolerance machining, laser cutting, laser engraving, CNC milling and CNC turning. If you have an upcoming precision CNC machining project, we can help. Give your friends at JW Machine a call today!
