Gearbox components

Conveyor belt furnace for bainitizing springs

Oven temperatures950 °C
Heating capacity100 kg/h
Part weight4 kg
Throughput dimensions (width x height)500 x 60 mm
HeatingIndirect electric heating
Oven atmosphereNitrogen / methanol

The furnace is divided into three heating zones with 6 heaters each, as well as a methanol splitter with 3 heaters located at the outlet drop shaft. A hot gas circulator circulates the protective gas atmosphere.

The belt runs over running and deflecting rollers as well as a tensioning device with guide rollers at the kiln inlet.

A height-adjustable bulkhead plate, as well as a flame curtain, is provided for the furnace inlet. Depending on the workpiece height, the kiln inlet can thus be adjusted to prevent heat loss.

The furnace outlet is formed by a drop chute. Through this, the workpieces fall from the belt directly into the salt bath below.

The furnace walls and floor are insulated with lightweight refractory brick, the dropout shaft with refractory brick, and the ceiling with ceramic fiber.

Rotary hearth furnace for transmission shafts

Oven temperatures300 °C
Heating capacity500 kg/h
Batch weight2 - 5 kg
Batch size (length x diameter)400 x 150 mm
HeatingDirect electric heating

The workpieces are placed by robot through the door onto the support, which is connected to the slewing ring. The six-tier turntable is driven by a geared motor and rotated further by a certain angle of rotation so that an already heated workpiece can be removed.

To prevent excessive heat loss during loading and unloading of the tempering furnace, there are 3 furnace doors.

In the cooling section, the workpieces are cooled down and then placed on the discharge conveyor by means of robots.

Rotary hearth furnace with hardening press

Oven temperaturesmax 950 °C
Heating capacity500 kg/h
Batch weightmax. 50 kg
Batch dimension500 x 500 x 150 mm (L x W x H)
HeatingNatural gas recuperator burner in the radiant tube
Furnace atmosphereEndogas / nitrogen

The rotary hearth is loaded or unloaded through a portal on two levels. The components are transferred to the hardening press. Directly after this, the components are linked to the washing machine and finally to the belt tempering furnace with aftercooling section.

Push-through gas carburizing plant

Oven temperaturesmax 980 °C
Heating capacity1.500 kg/h
Batch weightmax. 380 kg
Batch dimension650 x 650 x 650 mm (L x W x H)
HeatingNatural gas recuperator burner in the radiant tube
Furnace atmosphereEndogas / nitrogen
Carburizing capacityat 0.2 mm -> 1,500 kg/h
at 0.8 mm -> 700 kg/h
at 1.2 mm -> 350 kg/h

Furnace system consists of the following assemblies:

  • Transport line with loading & unloading
  • Pre-oxidation furnace
  • Gas carburizing furnace
  • Oil quenching bath
  • Washing machine
  • Tempering furnace

Puncture hardening system

Oven temperaturesmax 930 °C
Heating capacity100 kg/h
Batch weightmax. 25 kg
Batch dimension300 x 300 x 300 mm (L x W x H)
HeatingIndirect electric heating
Furnace atmosphereAmmonia

The furnace system consists of the following assemblies:

  • Loading
  • Vacuum lock
  • High temperature furnace with ammonia splitter
  • Oil bath
  • Unloading

Casting plate belt furnace

Oven temperaturesmax 960 °C
Heating capacity1.100 kg/h
max. belt load152 kg/m²
Part weight2 - 2.500 g
Throughput width annealing furnace1.200 mm
Throughput width tempering furnace1.400 mm
HeatingNatural gas recuperative burner in the radiant tube
Oven atmosphereEndogas / Nitrogen

The cast link conveyor is overlapped and manufactured in 1.4849. The furnace is equipped with lightweight refractory brick and ceramic fiber insulation and has space for 2 atmosphere circulation units.

  • N2 safety gassing
  • 3 inlet photocells to control the loading height (CQI-9)
  • Reversing – synchronous drive system with torque control

Activation furnace

Oven temperaturesmax. 500 °C
Heating capacity250 kg/h
Batch size800 x 700 x 400 mm (L x W x H)
HeatingDirect electric heating
Process gasAmmonia
Process fluidTetrachloroethene
Safety purge gasNitrogen

The activation plant is used to remove the passivating metal oxide layer from stainless steel workpieces. This is necessary in order to be able to carry out a nitriding process and obtain a hard surface. Depending on the shape and size of the workpieces, they are brought into the treatment room in baskets or charging racks.

Roller hearth furnace

Oven temperaturesmax. 900 °C
Heating capacity100 kg/h
Batch weight5 kg
Batch dimension300 x 300 x 50 mm (L x W x H)
HeatingIndirect electric heating
Furnace atmosphereNitrogen / Methanol

The gas-tight furnace has a hot gas circulator, a methanol splitter and a gas supply panel for propane, air, nitrogen and methanol.

The furnace has a heated furnace length of 3000 mm with a door at the inlet and outlet. The oil bath is equipped with a lowerable roller conveyor which feeds the charges to the downstream washing process.

Austenitizing furnace with hardening press

Oven temperaturesmax. 900 °C
Heating capacity100 kg/h
Batch weight8 kg
Batch dimension240 x 240 x 50 mm (L x W x H)
HeatingIndirect electric heating
Furnace atmosphereNitrogen / Methanol

The furnace system consists of:

  • Loading
  • Roller hearth furnace
  • Hardening press
  • Unloading

The furnace has a hot gas circulator, a methanol splitter and a gassing panel for propane and air, nitrogen and methanol. The furnace has a heated furnace length of 3000 mm with one door each at the inlet and outlet.

Roller hearth furnace for forging industry

Oven temperaturesmax 920 °C (annealing)
max 600 °C (ageing)
Heating capacity6,000 kg/h
Batch weightmax. 350 kg
Throughput width HTO1,200 mm
Throughput width NTO2,400 mm
HeatingDirect natural gas recuperative burner

The plant is used for quenching and tempering of steel plates at a working temperature HTO of 870°C to max. 920°C, quenching with water and subsequent stress-relieving annealing at a working temperature NTO of 250°C to max. 500°C.

 

The parts pass through the furnace system in a charge length of max. 1600 mm and a weight of max. 350 kg. They pass through the following plant components:

 

  • Loading
  • Austenitizing furnace
  • Water quenching bath
  • Cross transfer car
  • Tempering furnace
  • Aftercooling station
  • Unloading

Roller hearth furnace with vacuum lock

Oven temperaturesmax. 550 °C
Heating capacity1.200 kg/h
Batch weightmax. 650 kg
Batch dimension930 x 850 x 850 mm (L x W x H)
HeatingIndirect electric heating
Furnace atmosphereNitrogen

The gas-tight roller hearth furnace is used for heat treatment in a protective gas atmosphere (nitrogen) up to a temperature of 550°C.

The vacuum locks are pumped out to 0.1 mbar via a central vacuum pumping station and then flooded with nitrogen.

The roller hearth furnace is electrically heated and divided into 3 heating zones.

In the cooling station, the annealing material is cooled under inert gas to prevent oxidation.