RESEARCH REGARDING THE PROJECTION WELDING OF CYLINDRICAL FILTERS MADE OF STAINLESS STEEL NET

Abstract

This paper presents a case study about the manufacturing of stainless steel net filters, which are to be used into thermoplastic materials injection machines. The manufacturing process and the welding devices are presented, and then the metallographic analysis of the welds is shown. The experimental research was carried out by means of the ZGB-80 welding equipment in the resistance welding laboratory of the “Politehnica” University of Timișoara, along with other research devices, such as Myachi recorder. Several kinds of INOX steel nets were used, with different wire diameters and mesh/inch2. The quality, strength and aspect of welding were tested after completion.

Keywords

• filter
• projection welding
• resistance spot welding
• resistance seam welding
• metallographic analysis