Shell and tube heat exchangers are considered one among the most effective type of heat exchangers. These heat exchanges have a cylindrical shell with a bundle of tubes. The tubes are made from thermally conductive materials, which allow heat exchange between the hot fluids flowing outside the tubes and the coolant flowing through the tubes. These heat exchangers offer an optimal cooling solution to different applications including:
Shell and tube heat exchangers are widely used in applications, which require cooling, or heating large volume of process fluids or gases. There are a number of different types of shell and tube heat exchanger designs to meet several process needs in virtually every industry.
There are 31 grades of titanium based on mechanical and chemical properties. The weldability of titanium grades is one thing considered.
These grades are divided up into four classes: Commercially Pure (CP, or unalloyed), Alpha, Alpha-Beta, and Beta.
The elements in the titanium determine the crystal structure of the material. Oxygen, nitrogen, and aluminum encourage an alpha structure. Whereas vanadium, molybdenum and silicon act as beta stabilizers. The addition of other elements to the alloy can precisely control the crystal structure. Therefore the alloy’s properties and weldability can be controlled.
Consequently, the first step to successful titanium welding is to familiarize yourself with the various alloys, their properties, and the considerations in choosing filler metal for each.