In order to reduce the weight of the vehicle body and reduce the fuel consumption, the use of high-strength steel for bolts and screws has become a major development trend, and delayed fracture is the main technical obstacle to its development. Therefore, it is hoped to develop steel with anti-delay fracture characteristics, and hope that the wire material The secondary processing can improve the non-phosphorus film. At present, in the development of the steel wire mill, the non-phosphorus film has been applied in practice, but the heat resistance, lubrication effect and rust resistance of the non-phosphorus film are inferior to those of the zinc phosphate film, and further improvement is needed in the future.

In recent years, steel companies have achieved remarkable results in reducing surface scratches in various processes such as steel making, continuous casting, slab trimming and hot forging. On the other hand, in contrast, the overlap and transport of coils during transport, the surface scratches that occur during processing are relatively more pronounced. As one of its measures, some do not use forklifts to transport, and some use automatic three-dimensional warehouses to achieve the effect of improving surface quality. Rolled wire rods shipped from steel plants are most worried about surface scratches during transportation. Therefore, various methods for preventing scratches have been made, and the simple packaging method for recycling packaging materials has indeed achieved practical results. In addition, there is also a special coil frame shipping. Due to the global economic recession, the transportation distance has become longer and the problem of surface scratching has become more serious. These surface scratches may occur at all stages of the transport coil, and all relevant personnel are required to continuously strive to take various subtle measures such as using cushioning materials to prevent surface scratches.

If the strength deviation of the steel wire is large, it will directly affect the strength deviation of the bolt and the screw, and will also have a subtle deviation in the shape and size of the bolt and the screw. In order to reduce the cost, when the conventional cutting and polishing processing is omitted, the subtle deviation between the shape and the size of the bolt and the screw product may become a problem. Therefore, reducing and improving the variation in the strength of the steel wire is an important research subject in the future. Although strict management of chemical composition has achieved results, wire manufacturers need to study various measures to improve the uniformity of the entire steel wire during heat treatment.

When cracks are found during cold forging, it is sometimes required that the wire mill use the naked eye method to select all the defective products with cracks. In recent years, surface scratching has become a major cause of cold forging cracks, characterized by a short length of scratching, a very small number, and sometimes only 1-2 cracks in a roll. At present, it is a considerable burden for the wire mill to select all the defective products with cracks by visual judgment. From the point of view of the cost competitiveness of the material to the screw product, it is a future issue to develop an automatic selection inspection device that is reliable and low-cost, and to allow the occurrence of minute defects that are harmless to use. (Aoyama) (Article source: Steellink Information)

LED Light Sources

The LED light source (which is often also called a fibre optic projector or fibre optic illuminator) provides the illumination to any fibre optic lighting system. They contain the lamp or LED and any additional control gear to provide special lighting effects.

LED light sources is broadly split into three categories - RGBW units which are suitable for sensory and decorative lighting systems; white light only which are great for illumination inside display cabinets and for architectural lighting systems. Finally we also offer white light models with traditional effect wheels. These are used in the same way as in older halogen or metal halide light sources and provide easily controllable colour change or twinkle effects.

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