Titanium pipe is generally divided into two types, one is extrusion type called titanium seamless tube; the other is welding type called welded titanium pipe.
The difference between titanium seamless tube and titanium welded pipe
Extruded titanium pipe includes cold-rolled pipe, spinning pipe, and drawn pipe. Most of the extrusion products of titanium are pipe blanks of cold-processed pipes, and also include some hot-extruded pipes, special-shaped parts, profiles and composite materials used as finished products. The minimum specification of the pipe is 2mmx0.5mm in diameter, and the maximum length of the high-precision ultra-long pure titanium seamless pipe can reach 15m. There are two ways to prepare titanium pipe billets: one is the drilling/piercing extrusion process, the metal loss is large, but the wall thickness of the pipe billet is uniform; the other is the cross-rolling piercing process, the metal consumption is small, but the thickness tolerance of the pipe billet is relatively large big. The hot extrusion of titanium plate and titanium alloy is carried out by extrusion machine. Glass lubricated extrusion is adopted, and its extrusion ratio can be larger than sheathed extrusion, and titanium alloy profiles are extruded in glass lubricated P phase zone, and the maximum extrusion ratio can reach 150. Generally, medium speed (50~120mm/s) is used for extrusion. The extrusion ratio of titanium is generally less than 30, which is the extrusion ratio used in TC4 titanium alloy. There are three main types of lubricants used: grease, glass lubricant, and metal clad. Glass lubricated extrusion is currently the most advanced lubrication technology in the world, but glass lubricated extrusion of titanium pipe material in China has not yet reached the level of industrial application, and glass lubricated extrusion of titanium alloy profile has made a breakthrough. Over-lubrication is the coating of copper, mild steel or other metals on the outside of the billet. The metal cladding extrusion process is complicated, the cost is high, and the pickling process causes serious environmental pollution. The extrusion die is generally preheated to 300~400 degrees. Under normal circumstances, the service life of each extrusion BE die is about 20 times. For profile extrusion, in order to improve the dimensional accuracy of thin-walled profiles and the wear resistance of tools and dies, it is necessary to coat the dies with a zirconia coating by plasma method. When the specifications are single and the batch is large, the production of tube blanks by cross-rolling and piercing can get better technical and economic results. There are two types of cross-rolling piercing methods: two-roll cross-roll piercing and three-roll cross-roll piercing.
Welded titanium pipe has a short production process, high production efficiency, and unlimited pipe length. It is suitable for the production of thin-walled pipes with relatively single specifications, varieties, and grades and large batches. Titanium plate and titanium alloy thin-walled welded pipe are difficult to manufacture and are high-end products. For titanium welded pipes, the W bending forming method has good forming quality and is more suitable. The edge bending method is suitable for the production of welded pipes with a diameter greater than 200mm. The welding methods of pipe seams mainly include high-frequency hand-to-mouth welding and argon arc welding. Argon protection is required when the welding seam is above 450T during welding and after welding.
Titanium seamless tube is a long strip of titanium with a hollow section and no seams around it. Titanium pipe has a hollow cross-section, and many pipes are used to transport fluids, such as pipelines for transporting oil, natural gas, gas, water and certain solid materials.
Compared with solid titanium such as round titanium, titanium pipe is lighter in terms of bending and torsional strength. It is an economical cross-section titanium material and is widely used in the production of structural parts and mechanical parts, such as oil drill pipes and automobile drive shafts. , bicycle racks, and titanium scaffolding for building construction roofs, etc. Using titanium pipe to make ring parts can improve the utilization rate of materials, simplify the manufacturing process, save materials and processing man-hours, such as rolling bearing rings, jack sets, etc. Now it has been made with titanium pipe. Titanium pipe is still an indispensable material for various conventional weapons. Barrels, barrels, etc. must be made of titanium pipe. Titanium pipe can be divided into round pipe and special-shaped pipe according to the shape of the cross-sectional area. Because the area of the circle is the largest when the circumference is equal, more fluid can be transported with a circular tube. In addition, when the ring section receives internal or external radial pressure, the force is relatively uniform, so most titanium pipes are circular pipes. However, round tubes also have certain limitations. For example, under the condition of plane bending, round tubes are not as strong as square and rectangular tubes in bending strength. Some agricultural machinery skeletons and titanium wood furniture often use square and rectangular tubes.
What are the differences between titanium seamless tube and welded titanium alloy tube?
1. Welded titanium alloy tube is a hollow square cross-section titanium-titanium alloy tube, also known as hollow cold-bent titanium. It is made of hot-rolled or cold-rolled titanium or coil as the blank, which is formed by cold bending and then processed. Titanium with a square cross-sectional shape and scale made by high-frequency welding. Thick-walled titanium alloy tubes except for thickened wall thickness, the corner size and edge straightness reach or even exceed the level of resistance welding cold-formed titanium alloy tubes, and the size of the R angle is usually 2-3 times the wall thickness Between. According to the needs of customers, R-angle titanium alloy tubes of the size required by customers can also be produced;
2. Titanium alloy tube titanium seamless tube is a long titanium material with a hollow section and no seams around it. It is a titanium alloy tube formed by kneading a seamless tube through the 4 sides of the mold. The titanium alloy tube has a hollow section. Many pipes used to transport fluids. Mainly used in liquid transport, hydraulic support, mechanical structure, medium and low pressure, high pressure boiler tubes, heat exchange tubes, gas, oil and other industries. It is stronger than welding and will not crack.
Titanium pipe suppliers
If you want to know more about titanium pipe, please pay attention to JIANGSU TISCO INDUSTRIAL CO.,LTD, an excellent supplier of titanium pipe. This company will often update some information about steel to help you understand all kinds of steel.
Post time: Feb-08-2023