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China Shaped Parts, Inc.
tel.:+86-755-29931388
fax:+86-755-29931288
No. 21, Xinfa 2nd Road, Xinfa Industrial Zone,Xinqiao, Baoan, Shenzhen,China. 518125
Analysis of the difficulties in cold heading processing
In the fastener forming process, Cold heading (extrusion) technology is a main processing process. Cold heading (extrusion) belongs to the category of metal pressure processing. In production, an external force is applied to the metal at room temperature to form the metal in a predetermined mold. This method is usually called cold heading. In fact, the forming of any fastener is not only achieved by a deformation method of Cold heading. In the process of Cold heading, in addition to the upsetting deformation, it is also accompanied by positive and reverse extrusion, compound extrusion, and punching. , Rolling and other deformation methods. Therefore, the term for cold heading in production is just a habitual term, more precisely, it should be called cold heading. Cold heading has many advantages, and it is suitable for mass production of fasteners. Its main advantages are summarized in the following aspects:
1. High utilization rate of steel. Cold heading (extrusion) is a less and no cutting processing method, such as processing rod type hexagon head bolts, cylindrical head hexagon screws, using cutting processing method, the steel utilization rate is 25%~35%, and Cold heading ( Extrusion) method, its utilization rate can be as high as 85%~95%, which is only some of the process consumption of the material head, material tail and the side of the hexagonal head.
2. Suitable for automated production. Fasteners suitable for Cold heading (extrusion) (partially shaped parts) are basically symmetrical parts, suitable for high-speed automatic Cold heading machines, and are also the main method of mass production.
In short, Cold heading (extrusion) processing fasteners and special-shaped parts is a processing method with a relatively high comprehensive economic benefit, and is a processing method commonly used in the fastener industry.
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