Soldering tungsten with tin

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Are you interested in soldering tungsten with tin? The supplier Evek GmbH offers a wide range of tin solder at an affordable price. We provide delivery of products anywhere in the continent. The price is optimal.

Technical characteristics

Tungsten is a refractory metal: its melting point exceeds 34000 C. Tungsten is known for its high heat resistance, which is kept at a sufficient level up to 2700 °C. However, this metal is very fragile at room temperature, which imposes certain restrictions on the processes of permanent connection of tungsten with other metals or alloys. An important feature of tungsten is its active oxidation in the temperature ranges of 450...500°C and above. A WO3 oxide film is formed on the surface of the metal, which worsens the quality of the subsequent connection.

Peculiarities of tungsten soldering

Before tin brazing tungsten items should be thoroughly mechanically cleaned and etched. The etching agent to be used is hydrofluoric acid, nitric acid, and their mixtures. Immediately after etching, the parts are subjected to electrochemical degreasing. Supplier Evek GmbH offers to buy solder tin at an affordable price in a wide range. We provide product delivery anywhere in the continent. The price is optimum.

Soldering technological regime

Soldering tungsten parts with tin is desirable to carry out in a vacuum to exclude surface oxidation. As a result, the seam is denser, and it does not contain pores and cavities. Heating rate should be maximum, and soaking of the joint at soldering temperature should be the lowest. The following types of solders containing tin are used:

  • POS-90 (tin content 90%, the rest is lead);
  • POS-61 (tin content is 61%, the rest is lead);
  • POSV-50 or Rose alloy (tin and lead content - 25% each, the rest - bismuth).

After brazing often carry out a secondary melting of the seam, which increases its temperature resistance.

Buy. Supplier, price.

Are you interested in tungsten tin brazing? The supplier Evek GmbH offers tin solder at the manufacturer's price. We provide delivery of products anywhere in the continent. The price is optimal. We invite you to partner cooperation.