No Screwing Around
For some products manufacturing in a certain temperature range is important and for others it is not. I recently wrote a blog on plastic blow molding and in this case it is impossible to perform the process without heating the plastic to a critical temperature to form the bottle. This is the opposite of the approach that cold headed parts manufacturers take when making their products. Because the word cold is used some may assume that the temperature needed should be reduced, but most of the time the products are formed at ambient temperatures.
Many of these products literally hold our world together. A preformed die or series of dies are used to punch out the correct shape into a raw metal wire that can be made of steel, brass, copper or other alloys. Common items that are manufactured in this manner are screws, bolts or other fasteners. After a product that needs threading is punched it can be machine threaded and is sometimes heat treated after to harden the metal. The formation of the product however does not require any heat! Therefore, the process has no wasted stock because the materials are all punched into the desired size. Also, the process is much more inexpensive for manufacturers. The reason being, there is not heat expense added!
I commonly use products that are produced by cold heading, also known as cold forming. In the past, I used screws quite often when wood working or building. The companies that I purchased my screws from were cold headed parts manufacturers. With those screws I built a deck for my pool in my backyard that still stands today. This form of manufacturing has proven to be valuable in a number of industries and will continue to be used in the future because of its effective and efficient nature.