Titanium and its alloys have the advantages of high specific strength, high-temperature resistance, and low density, especially their excellent corrosion resistance. Titanium and its alloys are completely used to prepare large components, and the high cost limits its application range. Titanium-steel composite plates combine the advantages of titanium alloy and steel, it not only has good corrosion resistance, but also have high strength, and the cost is greatly reduced. It has broad application prospects in petrochemical, marine, aerospace, and other fields.
Titanium clad steel plate is mainly manufactured by explosive welding or hot rolling welding method, the preparation process is relatively mature, and hot rolling welding preparation technology has strong advantages in size, interface connection quality, etc., it is a titanium steel clad plate with potential application prospects Manufacturing technology. Due to the large difference in the physical and metallurgical properties of titanium and steel, its welding is difficult, which is a typical dissimilar metal welding problem. From the perspective of process adaptability, the fusion welding process is the most suitable welding process. At present, titanium steel composite Plate welding is mainly based on lap welding and butt welding of titanium plates, and transition welding of composite plates. The welding process of titanium plate lap welding and butt welding has been developed earlier and has been written into the national standard. From the perspective of the base material, its welding process It belongs to the welding of homogeneous materials, the process is simple and easy, and it is a relatively mature joint form. However, the components adopting lap welding of titanium plates have obvious intermediate gaps and cover plate protrusions, and the structure is bloated and the load is limited; on this basis, developed the titanium plate butt welding process, overcomes the problems of unreasonable joint structure and low bearing capacity, and improves the adaptability of the titanium steel composite plate welding structure; the transition layer welding of the composite plate is developed based on the welding process principle of the dissimilar steel composite plate The composite plate welding process is the welding method with the most potential application prospects in engineering, and it is also the welding method that faces the most welding metallurgical problems.
The main problem faced by the direct welding of titanium and steel is the generation of Ti-Fe brittle compounds in the weld, which leads to the inability to form a defect-free joint. The solution is to use Ni, Cu, Nb, V, etc., which have better compatibility with Ti and Fe Elements for transition welding to avoid or weaken the formation of Ti-Fe brittle compounds. For this reason, two methods of non-transition welding and metal transition welding have been developed for the welding of titanium-steel clad plates. Composite The plate is welded without transition metal, mainly avoiding the direct welding of titanium and steel from the form of the weld joint, and obtaining an incomplete but usable weld joint. Metal transition welding is mainly based on the compatibility of metal elements, and the transition metal is designed. By adjusting the welding process to obtain a complete joint.
The non-transition welding of titanium-steel clad plate mainly refers to the independent welding of the titanium cladding of the clad plate and the steel substrate. The welding of the steel substrate adopts a mature welding process. The welding of the titanium cladding is the key point of the research. Welding and butt welding of titanium plates are two ways.
The connection of titanium and steel dissimilar materials has always attracted the attention of scholars at home and abroad. The welding of titanium-steel composite plates is more challenging, and its welding problems have gradually attracted widespread attention from welding peers. Baoji Taicheng Clad Metal Materials Co., Ltd is one of the most professional titanium steel composite plate manufacturers and suppliers in China, Please rest assured to buy high-quality titanium steel composite plates for sale here from our factory.
