| Certification: | ISO |
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| Shape: | Wire |
| Purification Method: | Electromigration |
| Preparation Method: | Electrolysis of Fused Salts |
| Application: | Catalyst Masses, Energy Materials, Photoelectric Material, Photorecording Material |
| Product Type: | Rare Earth Magnet |
| Samples: |
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| Customization: |
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antalum powder as raw material by rolling, drawing and other plastic processing methods made of tantalum wire
Tantalum powder as raw material is made by rolling, drawing and other plastic processing methods. Tantalum wire is the most used in the electronics industry, mainly used for anode leads of tantalum electrolytic capacitors.
Tantalum powder as raw material is made by rolling, drawing and other plastic processing methods.
Manufacturing method editing
Powder metallurgy process
The process flow is as follows: raw material (tantalum powder)→ mixing → molding → vertical melting → rotary forging → intermediate annealing → drawing → finished product annealing → quality inspection → packing and warehousing.
Method of melting
The process flow is as follows: raw material (tantalum powder)→ mixing → molding → pre-sintering → electron beam melting → precision forging → intermediate annealing → rotary forging → intermediate annealing → Drawing → annealing of finished products → quality inspection → packing and warehousing.
Classified editing broadcast
They can be classified by chemical purity, performance, use and state.
According to the chemical purity is divided into 3 categories: (1) metallurgical tantalum wire, purity 99.0%Ta; (2) high purity tantalum wire, purity 99.0% ~ 99.9%Ta; (3) Ultra-high purity tantalum wire, purity 99.9% ~ 99.99%Ta.
According to performance, it can be divided into 4 categories: (1) chemical corrosion resistant tantalum wire; (2) high temperature and high strength tantalum wire; (3) Oxygen-resistant brittle tantalum wire; (4) tantalum wire for capacitors.
Tantalum wire can be divided into three categories according to the purpose of capacitors: (1) Tantalum wire for solid tantalum electrolytic capacitors (SDTa1, SDTa2)(see Chinese national standard GB/T 26012-2010); (2) Tantalum wire for leads of liquid tantalum electrolytic capacitors (LDTa1, LDTa2)(see GB/T 26012-2010); (3) Capacitor tantalum wire with reliability index (DTalL)(see China's national military standard GJB2511 -- 95).
Tantalum wire can be divided into three categories according to the state: (1) soft state (M), tensile strength σb=300 ~ 600MPa; (2) semi-hard state (Y2), tensile strength σb=600 ~ 1000MPa; (3) Hard state (Y), tensile strength σb> 1000 mpa.
Technology requires editing to broadcast
It includes three aspects: (1) Tantalum wire for solid tantalum capacitors (see GB/T3463-1995), whose chemical composition shall comply with the provisions of Table 1; The mechanical properties, technological properties, electrical properties and surface quality shall comply with the provisions of Table 2. (2) Tantalum wire for liquid tantalum capacitors (see Chinese National standard GB/T3463 -- 1995), except for high surface quality requirements, other technical indicators are generally consistent with those for solid tantalum capacitors. The surface of the liquid tantalum wire should be bright and free of oil, and no continuous pits and scratches can be observed at 10 times magnification. (3) Tantalum wire for capacitors with reliability index, according to the Chinese National military standard (see GJB2511-95) on the surface quality and process performance of tantalum wire anti-oxygen brittleness bending times (see Table 2), the index has been greatly improved. Surface quality, no matter liquid tantalum wire or solid tantalum wire, must be observed by microscope, solid tantalum wire magnification 10 times, liquid tantalum wire magnification from the original 10 times to 30 times, no scratches and continuous pits. The requirements for process performance are also greatly improved. The bending times of antioxidant brittleness should be increased from no less than 2 times to no less than 3 times for small diameter (d -- 0.25 ~ 0.40 1 mm) tantalum wire, and from no less than 3 times to no less than 4 times for coarse tantalum wire (d==0.50 ~ 00.60mm).
Here's the editorial on the theory of aerobic kneeling
A Theoretical study on the Optimum Average Grain Size of Tantalum Wire for Capacitops, [See Chinese journal of Metal Science and Technology, 1987,3 (6)], the theory of "optimal grain size of tantalum wire for capacitors" is put forward. The main points are: (1) Improving the oxygen brittleness of tantalum wire must refine the grain structure of tantalum wire; (2) The fine crystal structure must have high temperature resistance (above 1700ºC, maintain more than 30 minutes) and metallographic thermal stability; (3) The theoretical value of the optimal grain size of the fine grain structure is less than 40μm; (4) One of the technological ways to achieve fine crystal structure is through the initiation of high melting point dispersed crystal nuclei during recrystallization of tantalum wire.
Specification editor broadcast
Brands: Ta1, Ta2, TaW2.5, TaW7.5, TaW10, TaNb3, TaNb20, TaNb40, etc.
roduct use editor broadcast
Capacitor grade tantalum wire is mainly used to make anode lead of tantalum electrolytic capacitor. The capacitors grade tantalum wire produced by Beijing Dongfang Zhongchromatic Tantalum Niobium can be divided into more than 30 varieties according to different states and specifications. Tantalum wire with the smallest diameter of 0.10mm can also be made into tantalum yarn or tantalum net. Tantalum wire is the key material for making tantalum capacitors. Tantalum capacitors are the best capacitors, and about 65% of the world's tantalum is used in this field. It compensates for muscle tissue and can be used to suture nerves and tendons. Beijing Oriental medium tantalum niobium can provide tantalum wire of different states and different specifications. The smallest tantalum wire diameter is Φ0.1mm. Tantalum wire can also be used to make heating parts of vacuum high temperature furnace.
Tantalum wire is the most used in the electronics industry, mainly used for anode leads of tantalum electrolytic capacitors. High oxygen resistant brittle tantalum wire can also be used to make tantalum foil capacitors, which can operate in potassium dichromate and sulfuric acid energizing solution at a high temperature of 772 (100ºC) and extremely high flash voltage (350V). In addition, tantalum wire can also be used as a vacuum electron cathode emission source, ion sputtering and spraying materials.
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