Quenching and cooling equipment

Air quenching station

CoolingIndoor / outdoor air
Operating principleHigh convection
Air velocity40 m/s
Volume flow2 x 78.000 m³/h
Conversion time15 s

The air quench consists of two high performance fans facing each other. The charge is continuously reversed by 300mm during the quenching process.

Oil quench bath

Bath volume13 m³
Bath temperature60-140 °C
Heatingelectric
CoolingSafety water-oil cooling
Circulation2 agitators
Conversion time10 s

A batch is pushed onto the lowering unit in the oil bath. This dips with the batch into the 60-140 °C oil. Uniform quenching of the batch is achieved by circulating the oil.

Water quenching bath

Bath volume35 m³
Bath temperature45-95 °C
Heatingelectric
CoolingTubular heat exchanger
Circulation2 agitators
Conversion time10 s

The water bath consists of a hydraulically lowerable roller conveyor with steam extraction and an underlying quenching bath with collecting basin.
Uniform quenching of the charge is achieved by circulating water.
The draining area is located directly downstream.

Polymer quenching bath

Bath volume35 m³
Bath temperature30-50 °C
Heatingelectric
CoolingTubular heat exchanger
Circulation2 agitators
Conversion time10 s

The polymer quench bath can be filled with water or water/polymer mixture. The charge moves onto a hydraulic lowering platform which sinks into the quenching medium. Uniform quenching of the charge is achieved by circulating the medium.

Salt quenching bath with walking beam

Bath volume71 m³
Bath temperature180-400 °C
Heatingelectric
CoolingRadial fan
CirculationSalt pump
Conversion time<3 s

The salt bath is fed in cycles.

The batch is lifted by a motor-driven transfer fork from a roller conveyor and conveyed under salt as quickly as possible.

A pump ensures that liquid salt flows around the batch.

A walking beam conveys the charges through the salt bath to the unloading position.

The salt bath is heated electrically and cooled by a fan.

After the quenching process, a gripper lifts the batch out of the salt bath.

After opening the salt bath lid, the batch is removed by means of a gantry.

The salt bath is designed for gas-tight attachment to an austenitizing furnace.

Air aftercooling station

CoolingIndoor / outdoor air
Operating principleHigh convection
Volume flow25,000 m³/h per fan
Conversion time15 s

The air post-cooling station consists of a roller conveyor and fans underneath which cool the batches to a temperature of approx. 40 °C. The individual positions in the roller conveyor are driven by separate motors. The individual positions in the roller conveyor are driven by separate motors.

Air shower

CoolingIndoor / outdoor air
Operating principleHigh convection
Volume flow2 x 15.000 m³/h
Conversion time10 s

The air shower consists of two fans facing each other. The batch is continuously reversed by 300mm during the quenching process. The upper air duct is height-adjustable to compensate for different batch sizes.

Fixture hardening

Batch size920 x 400 x 200 mm
Batch weight10 kg
Bath temperature80 °C
Bath volume700 l
clamping forceper 7.000 N

A component is placed in a guide of the quenching basin and fixed by a clamping device. Due to the fixation, the component cannot warp during quenching with water.