At present, ring forming methods mainly include forging, turning, cold rolling and cold (warm) extrusion of Xuzhou NSK bearings. By touching the steel stamp on the bearing, the bearing can be recognized more quickly and accurately. If these stamps were touched by hand, they would not be touched. However, the existence of steel stamps can be touched by nails. In the above forming methods, forging is widely used, accounting for about 80 percent of the total output. For some ***all general types, forging is widely used. This product can rotate directly with rod (tube) material.
By forging, the inner defects of Xuzhou NSK bearing metal are remedied, the metal structure is changed, the metal streamline distribution is reasonable, and the metal seal is good. When the bearing recognizes the true or false of the bearing, it can recognize the bearing more quickly and accurately by touching the steel mark on the bearing. If you touch it with your hand, the stamp will not be touched, but if you touch it lightly with your nails, you can feel it. Forging technology has been widely used in bearing forming process. Can complete ***all products from the inner diameter of 20 mm to 5000 mm characteristics. Processing large-scale products. The commonly used forging methods are hot forging, cold forging and warm forging. Hot forging of Xuzhou NSK bearings is the main method in China.
Due to the difference of hot forging equipment, hot forging process can be divided into self-forging process, press forging process, flat forging process and high-speed upsetting process. When the bearing recognizes the authenticity of the bearing, it can recognize the authenticity of the bearing more quickly and accurately by touching the steel mark on the bearing. Stamps are not touchable if touched by hand, but they can be touched by nails.
Cold rolling technology is an advanced technology to improve material utilization rate, metal structure compactness of Xuzhou NSK bearing and keep metal flow linearity. This is a chipless processing method. In theory, cold rolled products can be directly heat treated and grinded without turning. At present, cold rolling technology is mainly applied to ***all and medium-sized deep groove ball bearings, and its main technological process is as follows:
Forging blank (ring) - turning (slotting) - rolling (slotting and chamfering) - full diameter - soft grinding end
When adopting cold rolling forging technology, the precision of Xuzhou NSK bearing product is affected not only by the precision of equipment, but also by the precision of forming die.
Article from: Xuzhou SKF Bearing www.wh-skf.com
Article from: Xuzhou INA Bearing www.ina-China.cn
Article from: Xuzhou NSK Bearing www.klbbearings.com