Improve the microstructure and preparation process of titanium alloy to improve mechanical properties

In order to obtain titanium pipe castings with good repair welding quality, the following points should be noted in the repair welding process:

1. The surface of the castings for repair welding must be cleaned and dried. The castings are not allowed to be touched directly before being put into the welding box. In the repair welding process of titanium pipe, it is strictly prevented that the tungsten electrode and the repair welding parts are short-circuited, which will cause the tungsten electrode to break and cause tungsten inclusions in the solder joint.

2. When the area and depth of the repair welding area are relatively large, it should be divided into multiple remote layer welding, and the welding of the next layer can only be carried out after the previous layer of welding layer is completely cooled. Prevent casting deformation.

3. At the end of repair welding, the current should be gradually reduced to reduce the melting zone. Therefore, it is recommended to use pulse current to prevent sharp arc interruption and cracks.

4. After repair welding, the casting should be allowed to cool in the box for a period of time before removing the casting to prevent cracks or deformation in the welding area of ​​the casting caused by rapid cooling; the length of cooling time depends on the casting, after repair welding of titanium pipe castings, Timely annealing or hot isostatic pressing should not be left for too long, usually no more than 5 days.

6. The number of repair welding shall not exceed the provisions of the relevant technical documents.

grade 1 titanium foil     Titanium Clad Copper     ASTM B861 25*1.2mm Titanium Tube For Chemical     Titanium Planar Target