Characteristics and precautions of TC4 titanium alloy tube

Generally, the environment for titanium heat exchanger tube manufacturers to repair and weld titanium tubes cannot have flowing air, and other aspects are the same as repair welding in a welding box. But special attention should be paid to:

1. The repair welding area should not be too large, the flow of nitrogen gas should be larger during the repair welding process, and the gas cannot be stopped in the middle;

2. After repair welding, nitrogen protection should be continued until the area cools down;

3. For some special castings, such as complex thin-walled castings, in order to prevent oxidation on the back of the repair welding area, argon can be blown to the back until the casting cools down;

4. It is required that repair welding operators have a high technical level.

In order to obtain titanium tube castings with good repair welding quality, the following points should be paid attention to during the repair welding process:

1. The surface of the repaired castings must be cleaned and dried, and the castings are not allowed to be touched directly with hands before they are put into the welding box.

2. In the process of repairing titanium tubes, strictly prevent the short circuit between the tungsten electrode and the repaired parts, which will cause the tungsten electrode to break and cause tungsten inclusions in the solder joints.

3. When the area and depth of the repair welding area are relatively large, the remote layer welding should be divided into multiple times, and the next layer of welding can only be performed after the previous layer of welding layer is completely cooled. It is absolutely not allowed to weld in one time. Prevent casting deformation.

4. When the repair welding is about to end, the current should be gradually reduced to reduce the melting zone. Therefore, it is recommended to use pulse current to prevent sudden arc breaking and cracks.

5. After repair welding, the casting should be cooled in the box for a period of time before taking out the casting to prevent cracks or deformation in the welding area of the casting caused by rapid cooling; the cooling time depends on the wall thickness of the casting, usually 15-30mm.

6. After the repair welding of Grade 1 Titanium Tube castings, it should be annealed or hot isostatic pressed in time, and it should not be left for too long, usually no more than 5 days.

7. The number of welding repairs cannot exceed the provisions of the relevant technical documents.

Application function of titanium plate and titanium alloy plate in the petrochemical industry

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 Grade 2 Pure 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. Titanium alloys can also be used as fuel and oxidant storage tanks and high-pressure containers. Existing to make automatic rifles with titanium alloy now, the launch tube of the mortar seat board, and a recoilless gun.

1. Memory function

Titanium-nickel alloy has one-way, two-way, and all-around 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; Ultra-Thin Titanium Alloy Sheet made of screws for fracture healing, etc. The above-mentioned applications have all obtained obvious effects.

2. Superconducting function

The niobium-titanium plate 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.

Application of Grade 12 Titanium Tube in aerospace - Knowledge - Xi'an HST Metal Material Co.,Ltd

Application of Grade 12 Titanium Tube in aerospace - Knowledge - Xi'an HST Metal Material Co.,Ltd: Application of Grade 12 Titanium Tube in aerospace

Titanium is used in airframe and aerospace engine parts. Grade 12 Titanium Tube can handle high temperatures without creep. Due to Grade 12 Titanium Pipe excellent resistance to fatigue and crack growth, it is recognized for its high strength-to-density ratio.

Corrosion problems in processing and storage of titanium alloy fasteners

During the machining and production process of titanium alloy fasteners, because the closeness of the mechanical parts is not so high when the fasteners are installed, it is easy to produce certain gaps, so that there will be surface gaps between the metal gaps. Paint ingress, which makes fasteners susceptible to corrosion during production. During subsequent use, the tightness of the connection will be affected. The reason why titanium alloy materials have relatively high corrosion resistance is because of the presence of oxygen in the air. After the oxidation reaction of titanium block and oxygen, a protective film will be formed on the surface. This layer of film can effectively protect the titanium alloy inside the material from oxidation, thereby improving the corrosion resistance of the titanium alloy material. However, in the actual machining process of titanium alloy fasteners, because the environment is constantly changing, including the surrounding temperature, humidity, and the oxidation of equipment during processing, etc., it will lead to the failure of titanium alloy fasteners. Corrosion is easy to occur, which is one of the problems that titanium alloy fasteners are prone to in the production process.

ASTM B348 Titanium Bar, ASTM B348 Titanium Rod Suppliers - HST TITANIUM

ASTM B348 Titanium Bar, ASTM B348 Titanium Rod Suppliers - HST TITANIUM: As one of the most professional astm b348 titanium bar/rod manufacturers, suppliers and companies in China, we're featured by quality products and competitive price. Please rest assured to buy cost-efficient astm b348 titanium bar/rod in stock here from our factory. Contact us for more products for sale.

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）

The difference between titanium alloy and aluminum alloy?

First, how to distinguish aluminum alloy and titanium alloy?

1. If you have two pieces of material on hand, one is aluminum and the other is titanium alloy, as long as the two pieces of material scratch each other, the scratched piece is aluminum, because titanium is harder than aluminum.

2. Compared with acid resistance, aluminum reacts immediately when it encounters acid, and titanium has good acid resistance.

3. Measure the weight. Aluminum doors of the same size are the lightest, titanium doors are slightly heavier, and steel doors are the heaviest. However, if the manufacturer intends to deceive people, they can use a mixture of aluminum and steel to make a door as heavy as titanium alloy. It's easy to tell if there's steel in the door though. Get a magnet and see if it sticks to the door. titanium alloy pipes are not magnetic and will not attract magnets.

4. Look at the color. Find an inconspicuous small corner, and use sandpaper to remove a layer of oxide film or paint on the surface to fully expose the underlying metal. Then look closely at the color of the metal. Take an empty coke can (aluminum) and sand off the paint on the surface to compare to the door. Aluminum alloys are light gray, titanium alloys are dark gray, and look more shiny than aluminum.

5. If possible, you can also measure resistance. The resistance of titanium alloy is much larger than that of aluminum alloy.

Second, what are the characteristics of aluminum alloy and titanium alloy?

Titanium alloy features: The alloy composed of titanium as the base and other alloying elements is called titanium alloy. Titanium alloy has the advantages of low density, high specific strength, good corrosion resistance and good process performance, and is an ideal structural material for aerospace engineering.

Research scope: Titanium alloys can be divided into structural titanium alloys and heat-resistant titanium alloys, or α-type titanium alloys, β-type titanium alloys and α+β-type titanium alloys. The research scope also includes forming technology of titanium alloy, powder metallurgy technology, rapid solidification technology, military and civilian use of titanium alloy, etc.

Aluminum alloy features: Aluminum alloy is made of pure aluminum with some alloying elements, such as aluminum-manganese alloy, aluminum-copper alloy, aluminum-copper-magnesium hard aluminum alloy, aluminum-zinc-magnesium-copper superhard aluminum alloy .

Aluminum alloy has better physical and mechanical properties than pure aluminum: easy processing, high durability, wide application range, good decorative effect, and rich colors. Aluminum alloys are divided into anti-rust aluminum, duralumin, super duralumin and other types, each type has its own range of use, and has its own code for users to choose.

Grade 5 Ti-6Al-4V Titanium Sheet/Plate Manufacturers, Suppliers, Factory - Buy Best Price Grade 5 Ti-6Al-4V Titanium Sheet/Plate for Sale - HST TITANIUM

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Titanium resources are abundant, and the amount of storage on the earth ranks third. Therefore, the high cost of titanium plates is only the first time to invest, but if it is used for many years, the titanium plate is an economical and practical ideal material.