Cold forging technology refers to performing plastic working by applying pressure to a material in cold (room temperature). Plastic processing is a process that utilizes a property (plastic deformation) that does not return to its original form even if the material is tapped, squeezed, or bent.

　The feature of cold forging is that it cuts the material and forms the shape, so the material loss is small as opposed to the cutting process and the fiber flow (fibrous structure) is not cut, so the strength is higher than the cut product. The point is to be stronger.

　In manufacturing, we use a mold made of cemented carbide etc., so it is possible to produce high dimensional accuracy without variation. Moreover, the production speed is fast, and it is the most popular technology in the production of screw products.

Our strengths

　Rolling is a plastic forming process that applies pressure to a material to deform it and is a method of forming a rod while rotating it with a tool called a rolling die. It can be processed into a wide variety of shapes, including spiral and serrations, circumferential grooves, chamfering of C or R at the tip of the screw etc.

Our strengths

　Lathe is a machine for making things by rotating and scraping materials such as metal. NC lathe added NC (Numerical control) to its lathe.
　NC means numerical control. We digitize with a computer and do cutting work cheaply. It is possible to process complicated shapes that are impossible by pressure forming and transformation, and processing with high dimensional accuracy is possible. Because of the motor drive, the processing speed is fast, and efficient production and high quality can be achieved at the same time.

Our strengths

　OTC thinks about manufacturing from the vision of customer's point all the time, aiming to deliver products with safety, security, stable and best quality.
　We will continue to respond to customers' needs, we will make manufacturing that does not make defects, seeking quality control system, improve employee's awareness of quality, and make continuous improvements.