The connection between titanium and steel dissimilar materials has always attracted the attention of scholars at home and abroad. The welding of titanium steel clad plates is more challenging, and its welding problems have gradually attracted the general attention of welding peers. At present, the non-transition welding of titanium steel clad plates, that is, titanium The lap welding and butt welding of the cover plate is the main welding process methods in the early stage of the development of the titanium steel clad plate. The process is simple and convenient, and the existence of brittle compounds of titanium and iron in the weld is effectively avoided. It has been widely used in fields with low welding quality requirements. However, the problem of unwelded welding joints has always been insurmountable, and there may be a risk of reducing the reliability of welded structures under service environment conditions, which limits the use of high-reliability requirements. Applications on important products.
The welding process of single metal and double metal transition overcomes some shortcomings of titanium plate lap welding and titanium plate butt welding and is an ideal welding method with wide application prospects. The core issue of concern is the choice of transition metal and welding method, Based on the analysis of the metallurgical properties of transition metals, titanium, and steel, single or double metals such as Cu, V, Nb, Ni, and other elements were proposed and studied to prepare transition layers. The most widely used welding method is GTAW welding, and laser cladding is also used. The transition layer is prepared by welding methods such as cold spraying, etc. The purpose is to reduce the heat input of welding, reduce the melting amount of the base metal, and the tensile strength of the obtained welded joint greatly improved.
Based on the existing research results, metal transition welding of clad plates is the process method with the most potential application, and it should also be the key direction of future research and development. It is an important goal of future development to realize welded joints without welding crack defects and with a certain toughness. It is a very challenging scientific problem to isolate Ti and Fe elements in the metal transition layer, especially in the intersection area between the rolling interface of the titanium-steel clad plate and the transition layer, the formation, and distribution of Ti-Fe compounds and other brittle compounds in the weld. , the existing research is not deep enough, and it is difficult to obtain welded joints with better toughness. The welding process method determines the distribution of chemical components of the weld and the microstructure formed. Changing the welding heat input mode to control the weld structure is another need to pay attention to in the future. A scientific problem, the current research has paid much attention to the metallurgical properties of the weld metal, and less research has been done on the regulation of the welding heat input, which restricts the improvement of the comprehensive performance of the welded joint and cannot meet the engineering needs.
Baoji Taicheng Clad Metal Materials Co., Ltd has a certain right to speak about the production of titanium steel clad plates, because we are a senior metal clad plate manufacturer, we have many years of R&D and production experience, if you want to discuss with us related to titanium steel composite sheets, welcome to contact us!
