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Lubrication concepts in cold-forging applications differ from those of hot forging. Cold-forming lubrication relies on traditional, complicated phosphate and soap treatments. Newer polymer coatings can replace this complex process, significantly reducing the waste stream and improving lubrication performance.
Cold forging is a proven and efficient serial production method for bolt manufacturing. Despite the many advantages of cold forging, the method requires high forging forces due to the low material formability.
Miyake Forging, a Japan-based supplier of hot- and cold-forged bearings and a provider of heat-treating and machining services, opened a new 48,000-square-foot plant in Surgoinsville, Tenn. The facility will produce bearing components for the automotive industry. Miyake Forging already operates two plants in Japan and one in Thailand. The Tennessee venture, the company’s first in the U.S., currently has 14 employees, but employment is expected to increase in the future.
It has been shown that pre-forming operations have a significant effect on predicting cracking based on mathematical damage models. Pre-forming operations such as wire drawing and bar cropping should be included in the simulation model for highest accuracy and best predictive results.
Cooper & Turner (C&T), the U.K.'s largest producer of hot- and cold-forged bolts, was acquired by Watermill Group (WG) of Lexington, Mass., a private investment firm.
Metal-forming simulations are used to develop unique processing techniques by eliminating the high number of laboratory tests required in such research, but they are also used extensively for the predictive detection of possible material failures, forging force detection, proper die design and topology optimization in the industry.
Since steels are so widely used, two articles will be devoted to this class of materials. This article will discuss the chemistry, typical applications and some operational forging issues.
