Frictional pressure
Sahashi Special Steel

◼ What is friction pressure? It is a technology that rubs at high speed of interruptions (stainless steel, soft steel, stainless steel, copper, etc.) and variant ingredients (different thickness), softening the members and applying pressure at the same time by the friction heat generated. Since the appropriate materials such as the joints of the diameter and the joining of the metal metal are used in the right place, rationalization is realized, such as saving materials and reducing the mechanical processing time. ◼︎ Features of frictional pressure ･ Unlike the arc welding, unlike the opening of the destination, the heat generated by rubbing the body of the mother material is obtained, so that the uniform intensity is obtained to the center. ･ Like a melting joint, the welding temperature does not become more than the melting point, so it has little heat effect, and a stable strength with less cracking and deformation is obtained. ･ You can join interdolic metals that are not possible with arc welding or resistance welding ◼︎ Effect of using frictional pressure ･ Cost reduction of material costs The material cost and processing costs can be saved by shaving the round bars by the same material and the displacement frictional pressure. By frictional pressure on a heterogeneous metal, only the necessary parts can be used for expensive materials, and others can be replaced with inexpensive materials. [Example] SUS304+S45C ･ Benefits of processing costs In the case of a product with a very difficult -integral process, it can be easily processed by splitting into two and partially processed after the friction pressure. When you want to process a deep hole such as a difficult scraping material, you can replace that part with a pipe and perform frictional pressure. ･ Benefits of intercourse metal joining By frictional pressure on the metal that was not possible in the past, it is possible to develop new products. [Example] Al+Cu, Al+SUS304 ･ In the past, underwater pump monitors have been commercialized by mechanical processing from stainless steel integrated rods as shown in Fig. 1 because the feather mounting shaft is corroded. However, by using frictional pressure, only the necessary parts (SUS304) can be used, and in places that do not touch water can be used not only for cost reductions, but also by using inexpensive materials, but also reducing machine processing costs. ◼︎Alclicit of frictional pressure applying examples ･ SUS304φ55+S35Cφ90 ･ S25Cφ55+SS400 board ･ CU+AL ･ S15C+STKM13 ･ S25C+S45Cφ30 ･ SUS304+SUS304 ･ Inconel+SCM ･ SUS304φ22+S40Cφ32