EBNER | Products | Steel industry | Hardening and tempering strip
Heat treatment furnace facilities for the steel industry
HICON hardening and tempering lines.
EBNER‘s innovative and future-safe developments in continuous hardening and tempering technology are recognized worldwide and set new standards in maximizing product quality and cost effectiveness while minimizing environmental impact.
Continuous in-line hardening and tempering of unalloyed and low-alloy carbon steel as well as martensitic Cr steel strip using hydrogen quench systems or molten metal quench technology with cooling gradients of up to 600 K/s is a process that has won worldwide acceptance.
- martempering – with leveling and tempering
- austempering – to achieve bainite microstructure
- patenting to achieve pearlite microstructure
Stainless Cr steel strip is transformed into martensite using a martempering process.
The martensite structure is formed in 2 steps with rapid cooling and hardening in the quench system followed by transformation to martensite in an air cooler, a process that has considerable advantages over quenching in oil, particularly with regard to strip flatness and surface finish.
Isothermal transformation such as austempering and patenting – and thus the combination of all 4 processes in a single line – is possible by changing the configuration of the facility components.
The facility can be implemented to comply with the standards required by the automotive industry, in accordance with CQI-9 (AIAG).
Strapping band
For this special application, where steel strip is austempered, a heating section featuring conductive heating and an energy-saving strip quench (also available in a lead-free design) are used.
