Material Characteristics
The Characteristics of Welded Tantalum Pipe
1. Strong corrosion resistance: The dense oxide film formed on the surface of tantalum makes it resistant to almost all inorganic acids (hydrochloric acid, sulfuric acid, nitric acid, aqua regia, etc.), strong bases, halogens, and salts below 160 °C. The corrosion rate is < 0.01 mm/year.
2. Strong high-temperature resistance: the melting point is nearly 3000 °C, and it can work stably to 2300 °C under vacuum. The inert medium has better temperature resistance, and there is no risk of softening and deformation.
3. Good physical properties: small thermal coefficient, strong dimensional stability; Excellent thermal conductivity and high heat exchange efficiency; The hardness is moderate, so the ductility and machinability are very good during processing, and it can realize multi-process forming such as rolling, welding, bending, etc.
4. Biocompatibility and stability: Tantalum has no toxicity and no metal ion precipitation, and can be used in medical implants, high-purity experiments, and other scenarios that require extremely high safety.
Products Parameters
| Product Name | Welded Pure Tantalum Pipe |
| Purity | 99.95% , 99.99% |
| Outer Diameter range | 3~150mm/customizable |
| Wall Thickness | 0.1~5mm/customizable |
| Tolerance | +-0.01mm |
| Length | customizable |
| Surface Treatment | Polishing and pickling |
| Delivery Time | It depends on the quantity of goods |
| MOQ | 3PCS |
| Density | 16.6 g/cm ³ |
| Melting point |
2996 ℃ |
| Thermal Conductivity | 54.4 W/(m·K) |
| Thermal Expansivity | 6.5×10⁻⁶/K(20℃) |
Products Advantages
Advantages of material purity
High-purity tantalum ingots are used as raw materials and are purified by vacuum electron beam smelting to eliminate impurity pollution, and the purity is stable and up to standard. The performance stability of pipes in strong corrosion and high purity is guaranteed from the source, and corrosion failure and performance attenuation caused by impurities are avoided.
Advantages of the welding process
1. Professional welding technology: vacuum electron beam welding and high-purity argon shielded welding are adopted. A vacuum can completely isolate air impurities. Argon shielded to avoid tantalum oxidation embrittlement during welding. The weld is fine without pores and cracks, and the welding strength can reach More than 90% of the base metal, far exceeding the conventional welding process.
2. Precise molding control: The rolling process is processed by CNC equipment to ensure that the deviation of pipe roundness and concentric degree is less than 0.05 mm, and the uniformity of wall thickness is controlled within ± 0.01 mm, which is suitable for precision equipment installation and fluid transportation needs.
3. Full-process testing: Each welded tantalum pipe has passed appearance testing, dimensional accuracy testing, weld non-destructive testing, purity testing, and corrosion resistance testing.
Advantages of customization
Special specifications such as coils, special-shaped joints, and welded tantalum pipes with flanges can be customized according to customer needs for outer diameter, wall thickness, length, and surface treatment, and can also be customized according to customer drawings.
Products Applications
1. Transportation of strong corrosive media: As a transportation pipeline for strong acids, strong alkalis, and halogen media, it replaces stainless steel and titanium materials to avoid the risk of corrosion and leakage. It is suitable for transportation pipes, valve liners, and heat exchangers for sulfuric acid, hydrochloric acid, hydrofluoric acid, and other media. exchanger tube.
2. High-end chemical equipment: used for core equipment components such as reactor lining, condenser, concentrator, electrolyzer, etc., to ensure the stable operation of equipment under high temperature and high corrosion conditions.
1. Manufacture of high-temperature components: It is used for high-temperature components such as engine nozzles, combustion chambers, and rocket engine nozzles. With high-temperature resistance and high-strength characteristics, it ensures extreme structural stability.
2. High-purity application: adapter high-purity gas transmission pipeline, fuel storage pipeline, high-purity, no impurities working condition requirements.
1. Semiconductor equipment components: high-purity gas pipes and vacuum pipes used in semiconductor chip manufacturing equipment to avoid metal ion pollution and ensure the accuracy of chip production processes.
2. Manufacturing of electronic components: As the core raw material of tantalum capacitors and the cathode insulating filament lead tube of X-ray tubes, it takes advantage of the excellent conductivity and stability of tantalum.
1. Manufacturing of medical devices: used for medical implants (such as supporting pipelines for tantalum bone repair materials), corrosion-resistant components of surgical instruments, relying on biocompatibility and non-toxicity to ensure medical safety.
2. Medical experimental equipment: adapt to medical disinfection equipment, high-purity reagent storage and transportation pipelines, and the cleanliness and corrosion resistance requirements of medical scenes.
New energy: high-purity pipelines used in photovoltaic and polysilicon production equipment, as well as corrosion-resistant transportation components in lithium battery manufacturing, are suitable for the high-purity and stable working conditions of the new energy industry.
The Whole Process of Production Process
Raw materials
High-purity tantalum ingots (purity ≥ 99. 95%) are selected, forged, and hot rolled to make tantalum plates with specified thickness. The surface of the plates is pickled and polished to remove oxide layers and impurities, and ensure the raw materials.
Roll forming
The CNC plate bending machine is used to accurately coil tantalum plates according to the target pipe specifications, control the coiling gap and roundness, ensure the fit of plates, and lay the foundation for subsequent welding. In the rolling process, inert gas is used to protect the plate from oxidation.
Pre-treatment
Polish and clean the seams of the rolled tantalum cylinder to remove oil stains and oxide films to ensure that the welding surface is clean.
High-purity products
Vacuum electron beam welding is used to complete the welding under vacuum, completely avoiding impurity pollution, and the weld seam is extremely dense.
Conventional grade products
High-purity argon shielded welding is adopted, and argon is passed throughout the process to isolate the air, prevent tantalum from oxidation and embrittlement at high temperature, and ensure welding.
Post-welding treatment
After the welding is completed, stress-relieving annealing treatment is carried out on the pipe to eliminate welding stress and avoid deformation and cracking in subsequent use; At the same time, the weld is polished and polished to improve the surface flatness.
Finishing
Accurately control the dimensional accuracy through drawing, finishing, and other processes for the outer diameter and wall thickness of pipes; Surface polishing, sandblasting, clean grade cleaning, and other treatments according to customer needs.
Dimensional inspection
Use high-precision calipers and projectors to inspect the outer diameter, wall thickness, roundness, and length of pipes to ensure that they meet the specifications.
Inspection
Use non-destructive flaw detection (UT/RT) to detect welds and troubleshoot air holes, cracks, and other defects. The purity of tantalum is tested by spectral analysis, and the purity test report is issued.
Performance testing
Sample for corrosion resistance and high temperature resistance testing to verify the core performance of the product.
Product Packaging
Transportation and Payment
Support various methods such as sea transport, air transport, express delivery, etc., and select the corresponding channel according to the customer's delivery time and value of goods; sea transport is suitable for large quantities and non-urgent orders, air transport is suitable for small batches and urgent orders, and express delivery is suitable for sample orders.
Assist customers in handling export customs declaration procedures, provide required information for export, and ensure smooth customs clearance; can provide docking of various trade terms such as DAP, FOB, and CIF.
Contact Us
We have mature batch supply capabilities, and can purchase small batches for small and medium-sized enterprises, and large-scale order needs of large enterprises.
We can provide exclusive quotation discounts for batch purchases. Relying on an efficient supply chain to ensure fast delivery of orders.
So if you need Welded Pure Tantalum Pipe, then contact us now to get the latest quotation.
Phone Number
(86)-18291772322
Ta-Nb@titanmsgp.com
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