T40 Titanium bar is widely used because it combines excellent formability and moderate strength with superior corrosion resistance.
This combination of properties makes T40 Titanium bar a candidate for a large variety of chemical and marine as well as aerospace and medical applications.
HST Titanium custom titanium forged blocks are characterized by high strength, ductility, and ease of machining. Forged titanium block parts are ideal for high pressure and high wear applications.
Every aspect of titanium block forging affects the internal quality or appearance quality of the forging to a greater or lesser extent. Therefore, each process must be completed strictly in accordance with the forging process.
F3 Titanium Forging is a relatively rare pure titanium product with a small range of applications. It is less prone to molding than F1、F2 Titanium Forging, with greater strength and improved corrosion resistance. Used in aerospace and some industries that require medium strength, and uses of petrochemical, food processing, pollution control, pulp and paper.
Titanium forgings are widely used in petrochemical equipment. Such as the holes and flanges of spherical storage tanks, various tube sheets required for heat exchangers, butt-welded flanges, forged cylinders (pressure vessels) of catalytic cracking reactors, cylinder sections used in hydrogenation reactors, fertilizer equipment The required top cover, bottom cover, head, etc. are all forgings.
Titanium alloy plates and titanium plates are mainly used to manufacture various containers, reactors, heat exchangers, distillation towers, pipes, pumps and valves in the petrochemical machinery manufacturing industry. Titanium can be used as titanium cathodes and condensers in power stations as well as environmental pollution control devices. The hardness of steel is higher than that of titanium plate, but the specific strength of titanium alloy, that is, the tensile strength, is higher than that of high-quality steel. Titanium alloy has good heat resistance strength, low temperature toughness and fracture toughness, so it is mostly used as aircraft engine parts and rocket and missile structural parts. Ultra-Thin Titanium Alloy Sheet can also be used as fuel and oxidant storage tanks and high-pressure containers. Existing to make an automatic rifle with titanium alloy now, the launch tube of the mortar seat board and recoilless gun.
1. Memory function
Titanium-nickel alloy has one-way, two-way and all-round memory effects at a certain ambient temperature, and is recognized as a better memory titanium alloy. In engineering, it is used to make pipe joints for the oil pressure system of fighter jets; the oil pipeline system of oil complexes; the parabolic mesh antenna with a diameter of 500mm made of 0.5mm wire is used in aerospace vehicles; it is used in medical engineering to make snoring Treatment; titanium plates made of screws for fracture healing, etc. The above-mentioned applications have all obtained obvious effects.
2. Superconducting function
The ASTM F67 Gr2 Titanium Sheet exhibits a zero-resistance superconducting function when the temperature is lower than the critical temperature.
3. Hydrogen storage function
Titanium-iron alloy has the property of absorbing hydrogen, which can safely store a large amount of hydrogen and release hydrogen in a certain environment. This has promising applications in hydrogen separation, hydrogen purification, hydrogen storage and transportation, and the manufacture of hydrogen-powered heat pumps and batteries.
Titanium is stable in the air; because titanium has low density, high specific strength, and the density is only 0.6 of that of steel. The strength of pure titanium is almost the same as that of steel, and the strength of alloy is nearly twice that of steel. characteristic. Titanium is known as "space metal". It can maintain high strength and mechanical properties in a wide temperature range of -253°C~500°C. Since the 1950s, the proportion of titanium in aerospace has been increasing. The bigger it is, the titanium alloy is an important material for making rocket engine casings, artificial satellites, and spacecraft.
At room temperature, Grade 1 Titanium Straight Wire maintains its own color tone for life, and its unique silver-gray tone is highly polished or mercerized. Matte has a good performance. It is the most suitable jewelry metal except precious metal platinum and gold. It is often used in foreign modern jewelry design. However, due to the high requirements of titanium processing technology, it is difficult to cast it with ordinary equipment, and it is difficult to weld it with ordinary tools, so it is difficult to form a production scale. Titanium is light in texture but extraordinarily strong. It is a popular jewelry material in the world. In terms of style design, the minimalist and clean cutting, high design and low-key avant-garde style are highly respected by young white-collar workers.
6al4v titanium alloy bar is a special metal with low density, light weight, high specific strength, and strong corrosion resistance. It will not turn black like silver, and it will keep its silvery white tone for life at room temperature. TC4 titanium rods and TC4 titanium forgings are commonly used in aerospace. Military precision parts. In terms of chemical reactions, the strong corrosive agent "aqua regia" can devour silver and gold, and even corrode the so-called "stainless" stainless steel. However, "aqua regia" has nothing to do with titanium. Titanium metal is also added to stainless steel to resist acid and alkali.
Titanium plates have unique uses in medicine. When titanium metal comes into contact with substances, no chemical reaction will occur. That is to say, because titanium has high corrosion resistance and high stability, it will not affect its essence after long-term contact with people, so it will not cause human allergies. It is the only one that has no effect on human autonomic nerves and taste. Metal. Titanium is also known as "biophilic metal".
During the production and processing of Titanium Eye Bolt and candied fruit, the requirements for mechanical precision will be higher. During mechanical production, because the tool is in a state of work wear during each production process, and is calibrated according to the program, the density of titanium alloy fasteners is higher, and the tool is easily worn during the processing process. In this state, the tool is still processed according to the program, which can easily cause the precision of the compact parts to be affected during the processing. If the precision of the fasteners is not strictly controlled within the error range during the entire processing process, the titanium alloy and other materials cannot be tightly connected during the use process, which will have a certain impact on the subsequent use. The precision of titanium alloy fasteners in the machining production process is a major problem that needs to be overcome in the production process. Fastener craft products are products made in high-precision production workshops, and the connection performance of these products is better.
Due to its excellent comprehensive performance, titanium is called the metal of the 21st century. Although the price ratio between titanium and titanium alloy bellows and stainless steel bellows is very high (about 10:1), the service life of steel equipment is only 2 to 3 years. The service life of the pipe can reach more than 20a, and there is almost no repair cost. From the perspective of long-term and comprehensive economic benefits, it is very cost-effective to use titanium bellows. At present, due to cost and manufacturing technology and other reasons, titanium and titanium alloy bellows can only be used in high-tech industries such as aviation, aerospace and high-energy physics in my country, and are rarely used in chemical, oil refining and other industries. It can be expected that with the development of science and technology in our country, the application of titanium is becoming more and more extensive.
Titanium bellows are generally used in occasions with high performance requirements such as light weight and high flexibility, and are also used in fields with high corrosion resistance requirements. Titanium and titanium alloy bellows have broad application prospects in chemical plants such as saltworks, fertilizer plants, and alkali plants. The chemical industry has high requirements on the corrosion resistance of bellows, and stainless steel can no longer meet the actual production needs. The use of titanium and titanium alloy bellows is a development trend. For example, when alkali plants and chemical plants are used for mother liquor heat exchange, due to the high concentration of CL - in the medium, there is corrosion to stainless steel, and the use of titanium bellows can effectively prevent corrosion. For example, a chemical plant in the United States used (254mm) hydroformed titanium corrugated expansion joints in the pipeline for transporting acetic acid; a Titanium Elbow heat exchanger developed by a company in Beijing for the fields of salt chemical and marine chemical industry has been used in some chemical plants , the effect is good.
In the oil refining industry, the most widely used bellows are wave expansion joints. Bellows expansion joints are widely used in catalytic cracking units in the oil refining industry. The bellows (wave expansion joints) used in the oil refining industry have high requirements for corrosion resistance. The main reason is corrosion damage, which accounts for about 80% of the failure of bellows expansion joints. In recent years, with the increase of corrosive medium content in crude oil, the development of heavy oil catalytic cracking process technology, and the increase of device operating temperature, the working conditions of bellows have become more and more harsh. The corrugated expansion joints in the catalytic cracking unit of the refinery often go through a production cycle, and some months or even several hours of operation will cause corrosion damage and need to be replaced, which seriously affects the safe operation of the equipment and the exertion of economic benefits. A pressing problem for refineries.
The density of titanium alloy is small, so the inertia of titanium liquid flow is small, and the fluidity of molten titanium is poor, resulting in low casting flow rate. The temperature difference between the casting temperature and the mold (300°C) is large, the cooling is fast, and the casting is carried out in a protective atmosphere. Defects such as pores on the surface and inside of the titanium casting will inevitably appear, which has a great impact on the quality of the titanium casting. Next, the titanium forging The surface treatment tips are organized as follows:
1. Removal of the surface reaction layer
The surface reaction layer is the main factor affecting the physical and chemical properties of titanium castings. Before grinding and polishing titanium castings, the surface contamination layer must be completely removed to achieve a satisfactory polishing effect. The surface reaction layer of titanium alloy flange can be completely removed by pickling after sandblasting.
1. Sandblasting: For the sandblasting treatment of titanium castings, it is generally better to use white corundum for rough spraying. The pressure of sandblasting is smaller than that of non-precious metals, and it is generally controlled below 0.45Mpa. Because, when the injection pressure is too high, the sand particles impact the titanium surface to produce intense sparks, and the temperature rise can react with the titanium surface, forming secondary pollution and affecting the surface quality. The time is 15 to 30 seconds, and only the sand sticking, surface sintering layer and part of the casting surface and the oxide layer are removed. The remaining surface reaction layer structure should be quickly removed by chemical pickling.
2. Pickling: pickling can quickly and completely remove the surface reaction layer, and the surface will not be polluted by other elements. Both HF-HCl and HF-HNO3 pickling solutions can be used for pickling of titanium, but the HF-HCl series pickling solution has a large hydrogen absorption capacity, while the HF-HNO3 series pickling solution has a small hydrogen absorption capacity, which can control HNO3 The concentration of HF reduces hydrogen absorption, and can brighten the surface. Generally, the concentration of HF is about 3%~5%, and the concentration of HNO3 is about 15%~30%.
2. Treatment of casting defects
Internal pores and shrinkage cavity Internal defects: can be removed by hot isostatic pressing, but it will affect the accuracy of the denture. It is best to use X-ray flaw detection to remove the exposed pores on the surface and use laser repair welding. Surface porosity defects can be directly repaired by local laser welding.
3. Grinding and polishing
1. Mechanical grinding: titanium alloy forged ring has high chemical reactivity, low thermal conductivity, high viscosity, low mechanical grinding ratio, and is easy to react with abrasives. Ordinary abrasives are not suitable for grinding and polishing titanium. It is best to use good thermal conductivity. For superhard abrasives, such as diamond, cubic boron nitride, etc., the polishing line speed is generally 900~1800m/min. Otherwise, grinding burns and microcracks are prone to occur on the titanium surface.
2. Chemical polishing: Chemical polishing is to achieve the purpose of leveling and polishing through the oxidation-reduction reaction of metals in chemical media. Its advantage is that chemical polishing has nothing to do with the hardness of the metal, the polishing area has nothing to do with the structural shape, all parts in contact with the polishing liquid are polished, no special complicated equipment is required, the operation is simple, and it is more suitable for polishing complex titanium denture brackets. However, the process parameters of chemical polishing are difficult to control, and it is required to have a good polishing effect on the denture without affecting the precision of the denture.
4. Coloring
In order to increase the beauty of titanium dentures and prevent the discoloration of titanium dentures from continuous oxidation under natural conditions, surface nitriding treatment, atmospheric oxidation and anodic oxidation can be used for surface coloring treatment to make the surface light yellow or golden yellow and improve the titanium dentures. beauty. The anodic oxidation method utilizes the interference effect of the titanium oxide film on the light to produce natural color, and can form colorful colors on the titanium surface by changing the cell voltage.
Titanium wire is one of the metals that are difficult to stretch at room temperature. In the past, graphite resin coating was used, and it could only be stretched in one mold per pass. The surface coating must be removed by pickling before intermediate annealing, especially for wires with a diameter of less than 0.5 mm. , the production process is complicated, the cycle is long, the metal damage is large, and there are silver-white pits on the surface of the wire, and even the mold cannot be stretched due to the sticky mold of the tree. After more than two years of production practice, the titanium wire manufacturer has developed a simple lubricating coating (including lime, soap, garden powder, molybdenum disulfide) for titanium wire stretching, so as to achieve multiple Die stretching new technology. The process has the following characteristics:
New Technology of titanium welding filler wire Drawing
1. Realized multi-mode stretching (up to 7 modes), which greatly shortened the production cycle, increased labor productivity, and increased output by more than 5 times, thereby reducing costs and creating conditions for the civil use of titanium materials.
2. Simplify and shorten the process flow, reduce labor intensity, reduce the amount of industrial acid, and reduce metal loss by about 15%.
3. The surface quality of surgical medical titanium wire is improved (silver-white pitting is eliminated, and stretched surface wire with metallic luster is obtained), and the tolerance of wire diameter is reduced, thereby improving corrosion resistance.
4. In the past, it was difficult to prepare industrial pure titanium wire with a diameter of 0.06 mm. Now, after improvement, it can smoothly stretch industrial pure titanium wire with a diameter of 0.06 mm and titanium alloy wire with a diameter of 0.1 mm, expanding the diameter of the titanium wire. Specifications and scope of use provide corrosion-resistant mesh materials for printing and dyeing, chemical, light industry and other industries.
Titanium bar/rod—a hot rolled, forged, or cold worked semifinished solid section product whose cross-sectional area is equal to or less than 16 in. (10323 mm); ASTM B348 Round Bar is a very popular go-to for many products.
Titanium bar/rod manufacturing state(ASTM B348):
Hot Rolling（R）
Cold Rolling（Y）
Annealing（M）
Solid solution（ST）
