What are the ASTM B265 titanium piping installation and transportation considerations?

Titanium pipe elbow general accidents are as follows:

First, titanium alloy pipe elbow, should be made on a regular basis to check, often on the embodied processing surface to adhere to the clean, pull out the dirt, flush storage in indoor ventilation monotonous place, prohibit stacking or open storage.

Second, titanium alloy pipe elbow ball valves, check valves, gate valves, when in use, only allow full open or full closed, not allowed to adjust the flow rate, in order to inhibit the erosion of the sealing surface, accelerate wear.

Third, the gate valve and the upper threaded check valve has an inverted sealing device, the handwheel to the uppermost head surface will not rust, will not degrade. Often adhere to the titanium alloy tube titanium elbow monotone and ventilation, adhere to the cleanliness of the apparatus and cut off, in accordance with the correct storage steps to keep.

According to the requirements of the workpiece and the surface, accept alkali washing, water-soluble detergent, chlorine solvent sandblasting, spraying and other methods to pack titanium standard products. Welding rods should be monotonous connection when used, titanium calcium type should be monotonous treatment at 150 ℃ for 1 hour, low hydrogen type should be monotonous treatment at 200-250 ℃ for 1 hour (can not be repeated drying, otherwise the coating will be simple to crack and fall off), in order to prevent the coating of the welding electrode sticking to the oil and other dirt, so as not to increase the carbon content in the weld, affecting the quality of the weld. Elbow welding, repeated heating to separate carbide, reducing the abortion resistance and mechanical function. Post-weld hardening is larger, simple breeding cracks. Accept the same model of welding electrode welding, the need for more than 300 ℃ preheating and post-welding about 700 ℃ slow cooling treatment. If the welded joints can not keep the post-weld heat treatment award, should choose chromium-nickel titanium alloy pipe welding rod. Correctly pack the titanium alloy pipe elbow to improve the quiet function of its use and extend its life cycle. Titanium pipe elbow should stabilize the sealing when equipping, inhibit the leakage and affect the normal work of the pipeline. When the titanium alloy pipe elbow is equipped, the titanium alloy pipe elbow can be equipped directly on the pipe according to the connecting foot, and the equipment is organized according to the orientation used. In the ordinary environment, can be equipped in the pipeline as far as possible in the direction of the pipeline, but need to facilitate the operation of the inspection, stable to stop the titanium alloy pipe elbow of the medium flow should be in the direction of the longitudinal valve flap under the upward flow of the titanium alloy pipe elbow can only be equipped horizontally.

Titanium and titanium alloy pipe installation titanium and titanium alloy pipe transportation and storage, please be careful not to contact with ferrous materials or collision.

1. Titanium and titanium alloy tubes should be cut by mechanical methods, and the cutting speed should be appropriately low; titanium grinding wheels should be used when cutting or repairing grinding wheels; no cutting flame. Bevels should be processed by mechanical methods.

2. Titanium and titanium alloy tubing should be inert gas welding or vacuum welding. Oxygen-acetylene welding or carbon dioxide gas welding shall not be used, nor shall ordinary manual arc welding be used.

3. Installation of titanium and titanium alloy tubing, shall not use iron tools and materials to knock and extrusion of carbon steel brackets, hangers and titanium and titanium alloy tubing between the laying of rubber sheets and soft plastic sheets, shall not be in direct contact with titanium and titanium alloy tubing titanium and titanium alloy tubing through the walls and floors should be installed casing, and its clearance shall not be less than 10mm.

4. Titanium and titanium alloy pipe shall not be directly welded connections with other metal pipes. When it is necessary to connect, you can use the casing flange connection. The non-metallic gaskets used are generally rubber gaskets or plastic gaskets, and should control the chlorine ion content shall not exceed 25ppm.