How to deal with the surface defect reaction layer of titanium plate and titanium rod

The surface reaction layer of Gr5 Ti-6Al-4V Titanium Plate and medical titanium rod is the main factor affecting the physical and chemical properties of titanium workpiece. Before processing, the surface pollution layer and defect layer must be completely removed. Physical and mechanical polishing of titanium plate and titanium rod surface polishing process:

1. Sandblasting:

The sandblasting treatment of titanium wire castings is generally better to use white corundum, and the sandblasting pressure is smaller than that of non-precious metals, generally controlled below 0.45MPa. Because, when the injection pressure is too large, the sand particles impact the titanium surface to generate intense sparks, and the temperature rise can react with the titanium surface, resulting in secondary pollution and affecting the surface quality. The time is 15-30 seconds, and only the sticky sand, surface sintered layer, and part of the oxide layer on the surface of the casting can be removed. The rest of the surface reaction layer structure should be quickly removed by chemical pickling.

2. Pickling:

Pickling can quickly and completely remove the surface reaction layer without contamination of the surface with other elements. Both HF-HCL series and HF-HNO3 series pickling liquids can be used for titanium pickling, but HF-HCL series pickling liquids have a large amount of hydrogen absorption, while HF-HNO3 series pickling liquids have a small hydrogen absorption capacity, which can control HNO3 The concentration of HF can reduce the absorption of hydrogen, and the surface can be brightly treated. Generally, the concentration of HF is about 3%-5%, and the concentration of HNO3 is about 15%-30%.

What are the applications of titanium wire and titanium alloy wire

Titanium and titanium alloy materials, as the leader in metal materials, have a series of excellent properties unmatched by other metal materials, so they have developed rapidly in recent years and have been rapidly and widely used in high-tech fields such as aerospace and military industry. Titanium wire manufacturers from the United States, Russia, Japan, China, and other countries in the world attach great importance to the research and development of titanium alloys, constantly develop new titanium alloy materials, and expand the application of titanium and titanium alloys. Due to the continuous in-depth research and the increase in product series, many titanium products, such as titanium wire, have also increasingly entered the field of various consumer goods.

1. Classification of Gr5 Ti-6Al-4V Titanium Wire

Titanium can be divided into pure titanium and titanium alloy according to whether it contains alloying elements, and titanium alloy can be divided into α titanium alloy and near α type alloy, (α+β) type alloy, and near β type alloy according to the difference of its composition and room temperature structure. Alloys and beta alloys. According to the different properties of titanium and titanium alloys, wires with different requirements can be prepared. Titanium and titanium alloy wire products are generally hard (Y) and annealed (M).

2. Application of surgical medical titanium wire

Pure titanium wire has a series of important properties such as good corrosion resistance, high specific strength, non-magnetic, high biocompatibility, low impedance to ultrasonic waves, high sound transmission coefficient, hydrogen storage and better shape memory function. The excellent characteristics of use-value have produced important uses in many fields such as aerospace, petrochemical, medical and health care, automobiles, construction, and sports and leisure products.

Titanium and titanium alloy wire, as an important variety of titanium material series, has developed by leaps and bounds in terms of output, specification, and application. In general, titanium and titanium alloy wires refer to titanium products supplied in the form of discs. Titanium wire processing manufacturers also supply them in the form of straight wires. In terms of diameter size, the division of rods and wires is not strict, and countries also different. And in recent years, due to its continuous development, the variety has become more and more diverse, which provides more choices in high-performance industrial and consumer products.

Application of Titanium and Titanium Alloys

Titanium metal has become one of the most important anti-corrosion materials in chemical equipment and has established its anti-corrosion position in chemical equipment. As an ideal material in chemical equipment, titanium has also attracted more and more attention from engineers and technicians. After years of implementation, titanium and its alloys have been widely used in chemical production as an excellent corrosion-resistant structural material. Now the use of titanium equipment has expanded from the initial "soda ash and caustic soda industry" to chlorate, ammonium chloride, urea, organic compounds, dyes, inorganic salts, pesticides, constituent fibers, fertilizers, fine chemicals, and other industries. It has developed from small and single to large and diversified. The tool chemical sector estimates that the chemical industry will use more than 1,500 tons of titanium. Now, among the domestic chemical titanium equipment, the largest number is the heat exchanger, followed by the titanium anode and container. The query results show that titanium heat exchangers account for 56.66%, titanium anodes account for 20.41%, titanium containers account for 16.28%, and others account for 6.65%. The earliest and largest use of ASTM B861 25*1.2mm Titanium Tube For Chemical in the chemical industry is the Chlor-alkali industry. Now there are nearly 200 large, medium, and small Chlor-alkali plants in the country, most of which use titanium anode cells and ion membrane cells to produce caustic soda, so the equipment uses a large amount of titanium. Soda ash, also known as sodium carbonate, is one of the basic chemical materials. The methods of producing soda ash mainly include the trona method, ammonia-alkali method, and the combined alkali method using salt as raw material. Regardless of which process is used, the equipment will be severely corroded by media such as sodium chloride and ammonium chloride.

Grade 12 Ti-0.3Mo-0.8Ni Titanium Foil

Grade 12 Ti-0.3Mo-0.8Ni Titanium Foil: As one of the most professional Grade 12 Ti-0.3Mo-0.8Ni Titanium Foil manufacturers, suppliers and companies in China, we're featured by quality products and competitive price. Please rest assured to buy cost-efficient Grade 12 Ti-0.3Mo-0.8Ni Titanium Foil in stock here from our factory. Contact us for more products for sale.

Flange is also called flange or flange.

The titanium flange connection is relatively easy to use and can withstand greater pressure. In industrial pipelines, the use of flange connection is very common. There are holes on the flanges for bolts to connect the two flanges tightly. The flanges are sealed with gaskets. Flanged pipe fittings refer to pipe fittings with flanges (flanges or pans). It can be cast, threaded, or welded. Flange connection (flange, joint) consists of a pair of flanges, a gasket, and several bolts and nuts. The gasket is placed between the sealing surfaces of the two flanges. After tightening the nut, the specific pressure on the surface of the gasket will deform when it reaches a certain value, and fill the unevenness on the sealing surface to make the connection tight and leak-proof. Some pipe fittings and equipment already have their own flanges, which are also flanged connections. Flange connection is an important connection method in pipeline construction.

Flange connection is easy to use and can withstand greater pressure. In industrial pipelines, flange connections are widely used. The function of the flange is to fix and seal the connection of the pipe fittings.

Titanium plate manufacturing process

Grade 9 Ti-3Al-2.5V Titanium Plate Hot Forging A forging process performed above the recrystallization temperature of the metal.

Hot rolling is a rolling process performed above the recrystallization temperature.

Cold rolling is a rolling process in which the plastic deformation temperature is lower than the recovery temperature.

Annealing: A metal heat treatment process in which the metal is slowly heated to a certain temperature, maintained for a sufficient time, and then cooled at a suitable rate (usually slow cooling, sometimes controlled cooling).

Pickling: Immerse the workpiece in an aqueous solution such as sulfuric acid to remove oxides and other films on the metal surface. It is the pre-treatment or intermediate treatment of electroplating, enamel, rolling, and other processes.

Titanium is prone to crevice corrosion in some media

Since titanium also has a creep phenomenon at room temperature, the problem of stress relaxation occurs. When selecting titanium bolts, it is best not to use titanium bolts as a forcibly sealed connection. When titanium bolts are required for corrosion resistance, the structural design needs to consider the ease of tightening the bolts regularly to ensure sealing. Titanium, like stainless steel, also has friction bonding and seizure phenomena. The adjustment and action performance of the titanium valve are controlled by the valve stem thread, which is achieved by the rotation of the handwheel and should be guaranteed by the material properties and the manufacturability of each part. Titanium threads are easy to bite, which can be solved with dissimilar materials or threads with larger clearances or with appropriate lubricants. The internal thread that needs to be tapped should be used less, and the turning thread structure with undercut groove should be used as much as possible. It can be cut by general cutting methods, due to the high chemical activity and special physical and mechanical properties of titanium rods and titanium alloys. However, compared with other commonly used metals, there are also special requirements. Master certain processing techniques and pay attention to them during processing. In order to use titanium material economically and rationally, grade 5 titanium round rod is more expensive. Parts made of titanium should not be used as much as possible for parts that are not in contact with corrosive media.

Titanium is prone to crevice corrosion in some media. Structural design should minimize gaps and recesses where water can be stored. The gap between the titanium plate and the titanium plate is also susceptible to corrosion, especially the gap formed by titanium and tetrafluoride. Because titanium is not resistant to solutions containing small amounts of soluble fluoride, fluoride causes passive damage. Therefore, special care should be taken when using PTFE plastic gaskets, fluorine-containing rubber gaskets and adhesives. Its strength index decreases with increasing temperature, and the mechanical properties of titanium change with temperature. For example, the tensile strength and yield strength at 250 to 300 °C are half of those at normal temperature. Even when the design temperature is not high, so. It should also be selected according to the strength value at the design temperature. Titanium has a high yield-to-strength ratio and good durability. When the design temperature is below 316 °C, the tensile strength value at this temperature is often determined by the design strength index. For industrial pure titanium, when the strength index value cannot be improved by heat treatment, when titanium is used in combination with other materials, the thermal expansion coefficient of titanium is small. Pay attention to the stress caused by the differential expansion.