Thread rolling is cold metal or cold forming process that produces threads by the means of precision thread rolling dies that are the replicated image of the thread generation. This a different process from others such as grinding, chasing and cutting since it does not eliminate metal in order to produce the intended profile. In this process, these hardened steels dies move and quickly form ductile metals in a precision fashion that achieves the intended form. At ITW Shakeproof Industrial, we can help you find the right steel thread rolling screw for plastic or metal you need for your application.
Higher Quality and Accuracy
Thread form rolling is a highly accurate method of producing thread form geometry and usually surpasses thread form requirements, due to the finish and accuracy in the thread roll dies used. As a result of the accuracy and high precision in the thread rolling tools, thread rolling naturally preserves the accuracy of the original arrangement during high speed production long runs.
Produce Higher Strength Joints
The cold working process increases tensile strength at least 30 percent more than cut thread, which raises the thread strength. In addition, the rolling thread process increases fatigue strength in the range of 50% to 75%. Even when threads are heated up to 500° F for multiple hours they retain their fatigue strength. Selecting a rolled thread process instead of a cut thread process produce strong threads with the requirement for external heat treating. With the production of thread rolling screws, metal is not removed and high joint strength is achieved.
Higher Quality Finish
The process of rolling generates an exceptional burnished finish. The mechanical polishing process of burnishing enhances the quality of the surface as the dies compress and shape the rolled material. Enhanced wear resistance comes from a high-quality finish and this is important since many of the nuts engaging a leadscrew are plastic.
Lowers Costs
Compared to full size cutting stock, thread rolling stock has a smaller diameter and none of the wasted material. As a result, regular processing does not produce scrap. The speed of a thread rolling surface feeds per minute can be as high as 10 times the speed of single point thread cutting feeds. The higher production per roll set results in significantly lower costs per thread.
When it comes to the production of true thread profiles, thread rolling is much more efficient of a process than thread chasing. Lower costs result from lower cost of tool per thread, less labor, and no scrap.
When the quality of connections is vital, thread rolling and thread forming screw manufacturers can provide various screw solutions. Rolled threads, in particular, provide exceptional finish, enhanced mechanical properties, economy, finish, accuracy, and excellent quality.
To learn about the thread rolling and thread forming screws we offer, call us today at 920.261.2652. You may also reach us through our contact form to ask a question or request a quote.
