Compressed Tungsten Spring

Compressed Tungsten Spring is precisely wound from 99.95% high-purity W1 tungsten wire. It can also be made of tungsten-rhenium alloy. It is a high-temperature resistant and hard-to-melt metal elastic component. Common types include compression springs, evaporation spiral springs, and special-shaped springs.

Customization of wire diameter, inner diameter, outer diameter, and number of coils is supported based on provided drawings.
 

 

Tungsten spring product features

• 1.

  High melting point of 3422℃, can withstand temperatures above 2000℃ for a long time under vacuum/inert atmosphere protection

• 2.

  Very low vapor pressure, with little gas release, suitable for high vacuum and ultra-high vacuum conditions

• 3.

  Good electrical conductivity and heat conductivity, can also be used as a heating element and an elastic compression support component

• 4.

  The thermal expansion coefficient of tungsten raw materials is small, so the product still maintains excellent dimensional stability even when repeatedly subjected to high-temperature heating and cooling

Please note : tungsten raw materials have relatively high brittleness at room temperature and cannot be bent forcefully, and tungsten is very prone to oxidation or powdering in an oxygen-containing high-temperature environment. Therefore, we recommend using tungsten springs only in vacuum, argon, or hydrogen protection atmospheres

1. Mainly used in the vacuum coating field, such as PVD evaporation sources (where tungsten springs are often used for evaporation heating)

2. Elastic compression and positioning support for high-temperature tube furnaces and vacuum sintering furnaces

3. Electronic tubes, hot cathode emission components

4. High-temperature test equipment in research laboratories, semiconductor vacuum equipment

5.Used in metallurgical melting experiments and plasma equipment, as well as aerospace high-temperature workpieces

For example, temperature, vacuum degree, whether used as an evaporation source, the number of thermal cycles, especially when the product is in an oxygen-containing high-temperature environment, it will fail rapidly
 

1. Vacuum evaporation coating use (the most common is aluminum/chromium evaporation tungsten springs, which are also used as heating and evaporation sources)

◦ Intermittent use in the laboratory is approximately 20–100 hours; if the working environment requires frequent start-stop and the working temperature is high, when evaporating active metals (Al), it is recommended that the gap usage duration is generally 20–50 hours; however, if the operation can be better standardized and controlled in terms of temperature and clean vacuum, it can reach 80–100 hours.
 

◦ In industrial production, the duration for continuous coating is approximately 50–300 hours; of course, if the tungsten wire diameter is thicker and the potassium-doped tungsten wire is not drooping, the service life is longer, and the working duration can reach about 500 hours or more
 

◦ Failure causes: tungsten wire's own high-temperature evaporation loss, alloying erosion with molten metal, repeated thermal cycling causing recrystallization and brittleness and fracture
 

2. Used in vacuum furnaces or tube furnaces, and only used as an elastic compression support component (no need for electrical heating, only for mechanical positioning, temperature < 1800℃, clean high vacuum)

◦ Continuous stable operation: several months or even longer, approximately 1–2 years, with few thermal cycles, no contact with molten metal, the longest lifespan; potassium-doped tungsten wire has anti-rusting and anti-re-crystallization properties, and its lifespan is significantly better than ordinary W1 pure tungsten wire
 

3. Prohibited conditions: contact with air/oxygen at high temperatures, oxidizes and pulverizes within a few minutes to several tens of minutes, therefore, it cannot be used in an oxygen-containing high-temperature environment
 

4. Key factors affecting service life include the following points

◦  Tungsten wire material, potassium-doped non-drooping tungsten wire used as the raw material for tungsten springs, its service life is longer than that of W1 pure tungsten wire as the raw material.
 

◦ Wire diameter, the thicker the wire diameter used, the slower the evaporation loss, and the longer the product lifespan

◦ Vacuum environment: the higher the vacuum and the fewer impurity gases, the better the lifespan

◦ Temperature: the closer the working temperature is to the melting point, the faster the evaporation and the shorter the lifespan

◦  Evaporated material: aluminum and silicon are prone to react with tungsten, significantly shortening the lifespan; gold and platinum are relatively mild

◦ Operation: avoid rapid cooling and heating, avoid bumps, and strictly prohibit introducing air to break the vacuum at high temperatures

How To Cooperate With Us?

Contact person : Tracy 

Our address

Baoji city, shaanxi province ,China

Phone Number / Whatsapp

+86-18291730106

E-mail

hf-v@titanmsgp.com

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