Specials

blackening

Some materials like mild or low alloyed steels need such rapid cooling rates which can only realised in wa-ter. However, plain tap water will evaporate on the hot surface during quenching (Leidenfrost phenomenon) resulting in reducing quenching speed with high risk of local pearlite formation.

The HYDRODUR additives restrain this phenomenon successfully resulting in very clean parts.

 

 

Product

Application

HYDRODUR

Additive for improved water quenching performance; gives components silver grey appearance; at 70 °C the maximum cooling rate is approx. 50 % higher than water

HYDRODUR GF

Cyanide-free additive for improved water quenching performance; at 70 °C the maximum cooling rate is approx. 25 % higher than water

HYDRODUR 20

Additive for improved water quenching performance; gives components slightly dark appearance; at 70 °C the maximum cooling rate is approx. 50 % higher than water

Covering products for waste salts

 

Product

Application

DUROSORB HSR

For sprinkling over waste salts; prevent the release of odours