Annealing furnaces from Arnold Schröder Industrieöfen – Precise heat treatment up to 1320 °C

An industrial annealing furnace is used for the targeted heat treatment of metals and alloys. Material properties are changed through controlled heating and cooling – for example to reduce stresses, improve machinability or achieve specific strengths. Annealing furnaces are used in many industries: from mechanical engineering to aviation and medical technology. Depending on the material and application, different annealing processes are used – such as stress relief annealing, soft annealing, normalizing or solution annealing.

What is an annealing oven and what is it used for?

Industrial annealing furnaces are essential systems for the heat treatment of metals. They heat workpieces to high temperatures in a controlled manner in order to change their structure in a targeted manner – for example to reduce stress, soften or harden them. The precisely controlled annealing process improves material properties such as strength, malleability and durability. Modern annealing furnaces are energy-efficient and reliable – an indispensable component for the highest quality in metal processing.

Typical annealing processes in industrial heat treatment

Typical annealing processes in industrial heat treatment are soft annealing, stress relief annealing, normalizing and recrystallization annealing. Soft annealing improves machinability, while stress-relief annealing reduces internal stresses. Normalizing produces a uniform microstructure and improves mechanical properties. Recrystallization annealing is used after cold forming and restores the original microstructure. Each process follows precisely defined temperature profiles and is tailored to the material and the desired properties.

What distinguishes an annealing furnace from other industrial furnaces?

An annealing furnace differs from other industrial furnaces due to its precise temperature control, controlled heating and cooling rates and defined protective or reaction atmospheres. In contrast to hardening furnaces, annealing does not involve rapid quenching, but slower cooling to reduce stress. Convection ovens, on the other hand, use convection for uniform heating, often at lower temperatures. Melting furnaces, on the other hand, work at significantly higher temperatures and aim to liquefy metals. Annealing furnaces offer precise process control to influence material properties in a targeted manner – ideal for structurally modifying heat treatments.

An overview of our annealing furnace models

• Annealing and hardening furnaces

Our annealing and hardening furnaces are mainly used for annealing and hardening steel in a normal atmosphere at temperatures of up to 1200 °C. The interior of these furnaces is lined with reduction-resistant lightweight refractory bricks and, in addition to multi-layer rear insulation, they have a rear-ventilated furnace housing, which significantly reduces the external temperature and also protects against corrosion.

• Convection ovens

The convection ovens are used for heat treatments where very good temperature uniformity and distribution is required but little space is available. The compact design is ideal for this. These ovens are used in industrial applications, e.g. for stress relief annealing.

• Bogie hearth ovens

Our bogie hearth furnaces are large-volume industrial furnaces with a mobile base on which workpieces are loaded and moved directly into the heated chamber. They are ideal for annealing large or heavy components and enable uniform heating and efficient loading and unloading.

• Protective gas ovens

Our inert gas furnaces with inert gas retorts and optional air circulation have been specially developed for the heat treatment of materials in a controlled inert gas atmosphere (e.g. argon, nitrogen, forming gas, etc.). At a maximum temperature of 950 °C (briefly up to 1100 °C when using an Inconel retort), you obtain scale-free results, especially when annealing, hardening, brazing or sintering steel.

• Chamber ovens

The electrically heated chamber furnaces offer precise and uniform temperature control, ideal for processes such as stress relief annealing. They are characterized by clean, emission-free heating and flexible application options for different workpiece sizes.

Buying an annealing furnace – the optimum solution with Arnold Schröder

Do you have questions about our annealing furnaces or are you looking for a customized solution for your heat treatment processes? Our experienced team will provide you with expert advice on applications, technologies and individual requirements. We are also at your side for service, maintenance or modernization. Together we will find the right furnace system for your needs – precise, efficient and future-proof.

Contact us now: Open the contact form or call us directly on 0049 6145 – 37697-0. We look forward to your inquiry!