Heat Treatments
Why heat treatments
Consistent metallurgical results, cycle after cycle
In heat treatments, the furnace atmosphere determines the final quality of the products. SIAD supplies gases (nitrogen, argon, helium, hydrogen, ammonia) and plants for producing protective atmospheres, designed according to the chemical composition of the parts, the thermal cycle and the required surface characteristics.
Quality
Uniform quality of treated parts
Lower costs
Reduced production costs
Zero downtime
Operational continuity without generator downtime
Almost 100 years of experience
From its early years, SIAD has engaged in the development of metal heat treatment applications. Almost 100 years of experience in the technical gases sector have enabled SIAD to acquire specialist expertise in the use of protective atmospheres and heat treatment processes, supporting the technological evolution of the metallurgical and mechanical industries.
DICPC System
Direct Injection Carbon Potential Control is SIAD’s alternative to exogas generators and endogas atmospheres obtained by mixing nitrogen and methanol. It generates stable atmospheres based on hydrogen, carbon monoxide and nitrogen, with automatic control of the protective atmosphere quality thanks to a dedicated analysis panel.
Synthetic protective atmospheres
Mixtures of nitrogen with hydrogen, methanol, methane and propane replace on-site generators. They ensure constant purity, flexibility (from pure nitrogen to 100% hydrogen), rapid mixer start-up and shutdown, and limited plant costs.
Products and services for heat treatments
SIAD supplies gases, mixtures and plants for every type of heat treatment, from continuous furnaces to chamber furnaces. The specialist team designs each solution on a customized basis, improving process quality and flexibility while containing processing costs.
Nitrogen, the inert base for every cycle
It is the reference gas for synthetic protective atmospheres. Used pure or mixed with hydrogen, it is employed in the annealing of ferrous and non-ferrous materials, sintering, brazing, vacuum furnaces and autoclave pressurization. It also ensures furnace purging at the beginning and end of the cycle, as well as during emergency phases, guaranteeing cycle safety.
Argon, protection for sensitive materials
It is used in vacuum furnaces for materials sensitive to nitrogen, such as titanium. It provides completely inert protection in thermal cycles where nitrogen may react with the treated metal, preventing contamination and preserving component properties.
It is also used in special Hot Isostatic Pressing (HIP) processes, where SIAD can supply pressurized gas and the gas chromatography system for controlling gas and atmosphere quality during the various process phases. The gas analysis system is produced by Pentatec, part of the SIAD Group, and supplied turnkey.
Hydrogen, the active gas that protects surfaces
It is the active component of nitrogen-hydrogen synthetic atmospheres for bright annealing, sintering and brazing. Its reducing function protects surfaces from oxidation, keeping parts clean and free from soot.
Liquid nitrogen, the cold that hardens steel
In sub-zero treatment of carbon steels, it completes the transformation of the austenitic phase into martensite, which is harder and more resistant. Cryogenic treatment increases hardness and improves dimensional stability. It is also used in shrink fitting to assemble parts with tight tolerances.
Contact us
Do you work in heat treatment?
Speak with one of our specialists to analyze your thermal cycle and identify the protective atmosphere and plant best suited to your production process.
Related Applications
Other SIAD applications for metallurgy
Gas solutions and technologies for the different phases of metal processing
