Tantalum wire

A kind of tantalum material with tantalum powder as raw material by rolling and drawing and other plastic processing methods. Tantalum wire is the most widely used in electronic industry, mainly used for anode lead of tantalum electrolytic capacitor.

Specifications

Brand: TA1, TA2, taw2.5, taw7.5, taw10, tanb3, tanb20, tanb40, etc;

Standard: gb/t3463-1995;

Purity: purity of tantalum is more than 99.95%;

State: annealed (m) or hard (y);

Size: disc wire: Φ 0.6~ Φ 5mm

Straight wire: Φ 1. ~ Φ 3*l2m (max)

manufacturing method

Powder metallurgy

The process flow is as follows: raw material (tantalum powder) → mixing → forming → vertical melting → rotary forging → intermediate annealing → drawing → finished product annealing → quality inspection → packaging and warehousing.

Smelting method

The process flow is as follows: raw material (tantalum powder) → mixing → forming → pre sintering → electron beam smelting → precision forging → intermediate annealing → rotary forging → intermediate annealing → drawing → finished product annealing → quality inspection → packaging storage.

classification

It can be classified according to its chemical purity, performance, use and state.

According to chemical purity, it can be divided into three 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 the performance, it can be divided into four categories: (1) chemical corrosion-resistant tantalum wire; (2) high-temperature and high strength tantalum wire; (3) oxygen resistant and brittle tantalum wire; (4) tantalum wire of capacitor.

Tantalum wires of capacitors are divided into three categories according to their use: (1) tantalum wires (sdta1 and sdta2) for solid tantalum electrolytic capacitors (see gb/t 26012-2010); 2) tantalum wires (ldta1 and ldta2) for liquid tantalum electrolytic capacitor leads (see gb/t 26012-2010); 3) tantalum wires (dtals, dtall) for capacitors with reliability index (see China National Army Standard gjb2511-95).

Tantalum wires of state capacitors are divided into three categories: (1) soft state (m), tensile strength σ B = 300-600mpa; (2) semi hard state (Y2), tensile strength σ B = 600-1000mpa; (3) hard state (y), tensile strength σ b>1000mpa.