The cleaning method of the inner hole of the titanium tube!

Degreasing: After cooling the billet, use a metal degreasing agent to remove the oil on the inside and outside of the pipe. When taking oil, pay attention to check the position where the inner hole is easy to store oil, and ensure complete cleaning. Pickling: The purpose of pickling is to remove the oxide film produced after annealing on the inside and outside of the Grade 1 Titanium Tube. At room temperature, put a certain amount of clear water into the pickling tank, the normal ratio of HNO 3 to HF, HNO 3 and HF water is HF+residual H2O), and adjusted accordingly according to the actual situation.

The pickling time is 10-15 minutes, and it can also be determined according to the pickling situation. During the pickling process, you should often turn around to check to ensure that the pickling is even and complete, and avoid pickling too fast or over pickling. After pickling, The titanium tube is inspected by visual inspection, and the oxide skin on the inside and outside of the titanium tube is removed, the silvery white is removed, and washed.

After pickling and inspection, the titanium tube should be cleaned in time to remove residual acid and pickling materials from the inner hole and outer surface to ensure the details of the titanium tube are bright.

In order to eliminate the influence of the surface oxide film on the hydrogen absorption process, titanium can be heated in vacuum or hydrogen. When heated to 700~850°C, the oxides on the surface of the titanium tube begin to diffuse to the metal, and the hydrogen absorption rate of the titanium heat exchanger tube is greatly improved. However, this method eliminates the oxygen in the oxide film and enters the metal during the heat treatment process, which not only reduces the diffusion rate of hydrogen into the metal, but also causes oxygen to enter the final product, thereby reducing the quality of the product; at the same time, the titanium tube Particles during heat treatment will also cause a certain degree of sintering, reducing their hydrogen absorption rate.

Titanium tube specifications and installation methods

Titanium alloy is the earliest developed and most widely used titanium alloy in the world. Its output accounts for more than half of the total output of various titanium alloy semi-finished products in the world, and more than 80% in the aerospace industry.

Introduce the precautions for installation, use, welding, transportation and maintenance.

  1. Grade 2 Pure Titanium Tubes and elbows should be inspected regularly to keep the surface clean, remove dirt, and store them neatly in a ventilated place indoors. Do not pile them up or store them in the open.

2. When the ball valve, stop valve and gate valve of the titanium alloy pipe elbow are used, they are only fully open or fully closed, and are not allowed to adjust the flow rate, so as to prevent the sealing surface from being eroded and accelerated wear.

  3. There is an inverted sealing device inside the gate valve and the upper thread stop valve, and the hand wheel is rotated to the top surface to ensure that it will not rust or fall. Keep the storage environment of titanium alloy pipes, titanium elbows, titanium size heads, titanium tees and other titanium pipe fittings dry and ventilated, keep the surface of pipes and pipe fittings clean and neat, and store them accurately.

Precautions for installation and transportation of titanium tubes:

1. Installation of titanium and titanium seamless pipes Titanium and titanium alloy pipe manufacturers should pay attention not to contact or collide with iron materials during transportation and storage of titanium and titanium alloy pipes.

2. Mechanical methods should be used for cutting titanium and titanium alloy pipes, and the cutting speed should be low. When cutting or grinding titanium pipes with grinding wheels, special grinding wheels should be used; flame cutting should not be used. Groove should be processed by mechanical method.

3. Inert gas shielded welding or vacuum welding should be used for welding titanium alloy welded pipes. Oxygen-acetylene welding or carbon dioxide gas shielded welding should not be used, and ordinary manual arc welding should not be used.

4. When installing titanium and titanium alloy pipes, do not use iron tools and materials to knock and squeeze; rubber plates or soft plastic plates should be placed between carbon steel supports, hangers and titanium and titanium alloy pipes to make them No direct contact with titanium and titanium alloy pipes; casings should be installed when titanium and titanium alloy pipes pass through walls and floors. The gap should not be less than 10mm, and insulation should be filled. The insulation should not contain iron impurities.

5. Titanium and titanium alloy pipes should not be directly welded with other metal pipes. When connection is required, looper flange connection can be used. The non-metallic gaskets used are generally rubber pads or plastic pads, and the chloride ion content should be controlled not to exceed 25ppm.

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The titanium sheet is a low density and high strength silver metal. Titanium-rolled sheets and titanium armor plates are used in aircraft and aerospace applications. Titanium sheets are used only as aerospace materials and are gradually penetrating into many markets, such as power plants and watches. Titanium aircraft seats can be cold-formed using standard methods.

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In addition to welding filler, titanium wires are also used in 3D printing or additive manufacturing. The shiny silver surface ensures a smooth wire feed. The highest consistent quality ensures high-performance printed parts in terms of tensile strength and elongation. 

Titanium wires for 3d printing mainly supply medical titanium wire products that use the plasma atomization method PA powder or electron beam fuse deposition rapid prototyping.

Introduction to the performance of titanium plate and its application range

Titanium is a very active metal. Its chemical symbol is ti and its atomic number is 22. It is rich in resources and ranks third in reserves on the earth. It can be said to be inexhaustible. It is a silver metal with a specific gravity of about 4.51 and a melting point of 1668°C. It is corrosion-resistant, has a long service life, and has a high recycling price. After scrapping, the value of titanium scrap is still equivalent to more than 60% of the purchase value of raw materials. It can be said that titanium materials As the least wasteful material, Titanium Hot Rolled Plate green environmental protection will not cause any adverse impact on the environment. The high cost of titanium plates and other materials is only a relatively large investment for the first time, but if it is used for many years and calculated carefully, titanium plates can be regarded as an economical and practical ideal material. The ores used to produce titanium in industry include rutile, ilmenite and titanomagnetite. Due to the difficulty of separation and extraction, titanium metal with industrial significance was not produced until the 1940s. Therefore, titanium is generally called a rare light metal.

For different products in different fields, titanium and titanium alloy products are different. People process them into titanium plates, titanium rods, titanium tubes, titanium strips, titanium wires, etc., which can be provided to the majority of demanders in the shape of deep processing to meet different fields. Among them, titanium plates, titanium rods and titanium tubes are the most widely used.

Titanium and titanium alloys have low density and high tensile strength. In the range of -253-600 degrees Celsius, its specific strength is almost the highest among metal materials. It can form a thin and hard oxide in a suitable oxidizing environment. film with excellent corrosion resistance. In addition, it is also non-magnetic and has a small coefficient of linear expansion. This makes Gr5 Ti-6Al-4V Titanium Sheet and its alloys first known as important aerospace structural materials, and then extended to shipbuilding, chemical industry and other fields, and has been developed rapidly. Especially in the field of chemical industry, more and more products use titanium and titanium alloy products, such as petrochemical, fiber, pulp, chemical fertilizer, electrochemical and seawater desalination industries, as exchangers, reaction towers, synthesizers, Autoclave etc. Among them, titanium plate is used as titanium electrolytic plate and titanium electrolytic cell in electrolysis and sewage desalination, and is used as tower body and kettle body in titanium reaction tower and titanium reaction kettle.

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ASTM B265 covers annealed titanium alloy strip. ASTM B265 Gr5 Titanium Strip is widely used in the equipment for the high-temperature environment, including aircraft equipment, petroleum and petrochemical, biomaterial, ocean and chemical industry, for example, blade, storage tank, target, tube and heat-exchanger equipment.

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Talk about the application of titanium materials in various fields!

Because titanium has good corrosion resistance, mechanical properties, and process properties, it is widely used in many fields. In chemical production, titanium is used instead of stainless steel, nickel-based alloys, and other rare metals as corrosion-resistant materials, which can increase quality, extend equipment life, reduce consumption, reduce energy consumption, reduce costs, avoid pollution, improve working conditions and It makes sense to increase productivity and so on. In recent years, the range of titanium materials used in the chemical industry has been expanding, and the amount has been increasing year by year. It is one of the main anti-corrosion materials in equipment. As a corrosion-resistant structural material used in chemical equipment, titanium has established its position, and as a material in chemical equipment, Grade 3 Pure Titanium Plate has attracted more and more attention from engineers and technicians.

(1) Chlor-alkali industry

The chloralkali industry is an important basic raw material industry, and its production and development have a great impact on the national economy. This is because titanium has better corrosion resistance to chloride ions. At present, Titanium Grade 2 Round Rod is widely used in the chloralkali industry to manufacture metal anode electrolytic cells, centrifugal coolers, refined brine preheaters, etc. In the past, the main components of this equipment were mostly made of non-metallic materials. The mechanical properties, thermal stability, and processing performance of non-metallic materials were not enough, resulting in bulky equipment, high energy consumption, short life, and pollution of the environment.

(2) Soda ash industry

Soda ash is one of the basic chemical raw materials, which is directly related to economic development. In the production process of soda ash, the gas medium is mostly NH3 and CO2, and the liquid medium is mostly NaC1, NH4C1, NH4HCO3, and C1-solution materials with high concentrations. The main equipment such as the cooler is not corrosion-resistant, the corrosion leakage is serious, and the service life shall not exceed three years.

Uncover the unknown features of titanium coils

The strength of titanium alloy Titanium Coil Tube is higher than that of high-quality steel. Titanium alloy has good heat resistance, low temperature toughness and fracture toughness. Titanium equipment is mostly used for aircraft and other components, rockets, missile structural parts and titanium equipment.

Titanium gold and silver are bright, light, strong, and have good corrosion resistance. The metal made of titanium gold will not deform or fade, and it is easy to maintain. Just wipe it with a cotton cloth to restore its luster, and it is easy to operate. The longer the time, the better the brightness.

Titanium has stable chemical properties and good biocompatibility. In the human body, it can resist the erosion of exudate, has no harm to the human body, and conforms to any sterilization method. Since the titanium in the titanium coil has quite high corrosion resistance and stability, there will be no chemical reaction between the material and the drying time, so it is a metal that has no effect on people's autonomic nerves and sense of taste, and will not cause overreaction.

Pure titanium is non-magnetic and has very low thermal secondary conductivity at high temperatures. In addition, pure titanium is in a semi-opaque state under X-rays, and metal artifacts will not appear in MRI examinations. Due to its high strength, high metal elasticity, and poor ductility, titanium metal has high requirements for processing technology.

Features:

1. It has excellent corrosion resistance in various media, and the tube wall is thinner, which increases the heat transfer efficiency.

2. The surface is smooth without scaling layer, and the scaling coefficient is greatly reduced.

3. Low density, high strength, small size and light weight.

Titanium in titanium coil has excellent physical and chemical properties, low density, light weight, high strength, good corrosion resistance, mechanical properties and weldability, making it used in many fields: for chemical equipment, offshore power generation Equipment, seawater desalination equipment, ship parts, electroplating industry and other industries. The corrosion resistance is 150% stronger than stainless steel, and the service life is about 10% longer than stainless steel.