"Hardening shop" Chemical-heat treatment of metals

Cementation

• in a salt bath with subsequent thermal hardening in AS 140 of a part with a maximum length of 600 mm and a diameter of 300 mm to a cementation depth of 1.2 mm-1.4 mm
• in monocarb with subsequent oil hardening of a part with a maximum length of 1,450 mm and a diameter of 650 mm to a cementation depth of 1.5 mm

Hardening

• in oil, both small parts and finishing parts, parts with a maximum length of 4,000 mm and a diameter of 150 mm, heating to the hardening temperature without a protective atmosphere
• in water, low carbon steel, only small parts (maximum hardening temperature 980°C)

Nitridation

• gas – 2 stands – temperature 520°C – depth of nitridation 0.5-0.7 mm – 1st stand – dimensions: dia. 250 x 2,300 mm and 2nd stand: dia. 250 x 2,800 mm
• plasma – temperature 480°C to 560°C – depth of nitridation 0.25-0.5 mm – furnace dia. 1,100 mm x depth 4,000 mm

Place for H2

• in the N2 protective atmosphere – parts with a maximum length of 4,000 mm and a diameter of 900 mm
• large bogie-hearth furnace with gas heating of parts with dimensions of 8,000 mm x 3,000 mm x 2,500 mm, the possibility of all annealing operations with a maximum temperature of 580°C

• bogie-hearth furnace (2x) with electric heating of parts with dimensions of 4,500 mm x 1,000 mm x 1000 mm, the possibility of all annealing operations with a maximum temperature of 960°C
• shaft furnace with electric heating of parts with dimensions of 1,700 mm x dia. 1000 mm, the possibility of all annealing operations with a maximum temperature of 960°C
• chamber furnaces only for small parts, the possibility of all annealing operations with a maximum temperature of 900°C

Alkaline blackening

• parts with maximum dimensions of 1,950 mm x 500 mm x 350 mm

Place for H2

• steel shot diameter of 0.16 mm, the diameter of the work table is 1,500 mm, hight 800 mm