Pit-type nitriding furnace with K_N control for H2 analyser and mass flow controllers

Aluminium extrusion die nitriding furnace

Pit-type nitriding furnace with K_N control for H2 analyser and mass flow controllers

In terms of production management, the operating status and main process parameters
of the equipment in the entire workshop are centralized in the nitrogen control touch
screen. Managers can monitor the production status at any time, obtain complete and
accurate process records, and more efficiently manage and command the production
process of the workshop, while completely overcoming human negligence and
slackness.

In terms of process management, utilizing the process assisted design expert system of
this system can greatly reduce the exploration cycle of the process;Overcoming the
arbitrariness of previous practical operations, enforcing strict process discipline, and
reducing unnecessary losses caused by human errors.

Production process control: For the production process of a product, the heat
treatment process is the key to determining the intrinsic quality of the product. Only
when each process is well controlled can product quality control be achieved.

Improving product quality, strictly controlling process parameters and processes,
especially for chemical heat treatment processes such as nitriding and soft nitriding, can
greatly enhance the intrinsic quality of products, reduce or even eliminate waste, and
create considerable economic benefits.

Enhance the competitiveness of the enterprise, improve its image, cultivate an
advanced corporate culture, create a favorable labor and production environment,
establish a quality awareness among all employees, and build a new platform for the
further development of the enterprise.

Atmosphere nitrogen potential control, the nitrogen potential control system adopts
a thermal conductivity hydrogen analyzer (JCQ-2000) modeled after German
technology, which has the greatest advantage of not requiring flowing gas and avoiding
gas flow blockage in pipelines during soft nitriding.
The working principle of the hydrogen probe is to measure the thermal conductivity of
the nitriding furnace atmosphere, utilize the high thermal conductivity of hydrogen gas,
measure the relative percentage concentration of hydrogen gas, and output a 0-100mV
signal corresponding to 0-100% H2 content.Basic error ± 2.5%, reaction time less than
20s; thermal equilibrium time less than 30min.
The system has relatively complete alarm functions for process deviations, process
events, and system failures.The system uses CKD’s solenoid valve from Japan as the
main control solenoid valve, which can adapt to different highly corrosive nitriding
media.The system has been designed with anti-interference and optoelectronic isolation
on the circuit according to different industrial sites, therefore the system has strong
anti-interference ability.

Reliability: This control system adopts the highly reliable Taiwan Delta touch
screen machine, combined with Siemens PLC intelligent temperature control
instrument and nitrogen potential control instrument as the lower execution unit to form
a dual communication control system. The temperature and upper computer adopt
RS-485 communication mode, and various parameters are centrally managed, recorded,
stored, and statistically analyzed by the upper computer.
2.3 Adaptability: The nitrogen potential control instrument used in this control system
has a combination output mode and various forms of variation, which can adapt to
various types of gas sources and actuators such as pure ammonia nitriding, ammonia
nitrogen hydrogen mixed gas nitriding, and various soft nitriding atmospheres.