Annealing Furnace Manufacturer in India, Mumbai, Pune, Delhi, Hyderabad, Jamshedpur, Bangalore, Kolkata, Faridabad. Annealing furnace price, Bell Annealing furnace, Stress Relief Furnace, Pit Furnace manufacturer in Oman, UAE, Nepal, Africa, Italy

Annealing is a heat treatment that alters the physical and sometimes chemical properties of a material to increase its ductility and reduce its hardness, making it more workable. It involves heating a material above its recrystallization temperature, maintaining a suitable temperature for an appropriate amount of time and then cooling. Typically, in steels, annealing is used to reduce hardness, increase ductility and help eliminate internal stresses.During normalising, the material is heated to a temperature approximately equivalent to the hardening temperature (800-920°C). At this temperature new austenitic grains are formed. The austenitic grains are much smaller than the previous ferritic grains. After heating and a short soaking time the components are cooled freely in air (gas). During cooling, new ferritic grains are formed with a further refined grain size. In some cases, both heating and cooling take place under protective gas to avoid oxidation and decarburisation. Maan Global Industries is the leading Annealing Normalizing furnace manufacturer in India and also among the leading annealing furnace exporter in the country. As one of the best Annealing Normalizing furnace manufacturer in Mumbai, Pune, Hyderabad, Delhi, Kolkata, Jamshedpur, Uttar Pradesh, Bangalore, Nashik, Chennai, Trivandrum, Punjab and Faridabad, we have a track record of manufacturing heat treatment furnaces that are high quality and energy efficient at affordable costs. With in house fabrication, machining and testing facilities, we offer the largest furnace range in the country ranging from low temperature, carburizing to alloy-steel heat-treating furnaces.

What is the Process of Annealing and How does an Annealing Furnace Work?

An annealing furnace heats the material above its recrystallization temperature and then cooling the material once it has been held at the desired temperature for a desired amount of time. The material recrystallizes as it cools because the heating process causes the atoms movement to redistribute and eradicate dislocations in the work piece or the material.

Annealing Process works in three stages – the recovery stage, recrystallization stage and the grain growth stage. The three stages of annealing process are as follows:

1. Recovery Stage

This stage is where the furnace or other heating device is used to raise the temperature of the material to such a point that the internal stresses are relieved.

2. Recrystallization Stage

Heating the material above its recrystallization temperature but below its melting point causes new grains to form without any residual stresses.

3. Grain Growth Stage

Cooling the material at a specific rate causes new grains to develop. After which the material will be more workable. Subsequent operations to alter mechanical properties can be carried out following annealing.

Here’s a very useful link by the Pennsylvania State University for Annealing Wrought Carbon and Low Carbon Alloys.

Stress Relief Annealing Process

Heat the steel to a certain temperature below Ac1 (generally 500 ~ 650 ℃), insulation, and then cooling with the furnace. The stress annealing temperature is lower than A1, so the stress annealing does not cause organizational change. The objective of the Stress Relief Annealing Process is to Eliminate residual internal stress of the work piece.

The Ferritic steel grades retaining single-phase structures throughout the operating temperature range require nothing more than short recrystallization annealing at temperatures of 760 to 955°C

Source: Azom.com

What is Annealing Heat Treatment Process?

Types of Annealing Normalizing Furnaces

Annealing Normalizing furnaces come in various shapes, sizes and heat source such as Electric, Gas fired, Oil/Diesel Fired, Vacuum annealing, dissociated ammonia or nitrogen environment. Let’s have a look at the various types of Annealing furnaces that we manufacture:

Batch Type Annealing Furnace Specifications:

Annealing Normalizing Pit Furnace Manufacturer in India

Pit Furnace Specifications:

Annealing Normalizing Pit Furnace Working Process

Bogie Hearth Furnace Manufacturer in India, UAE, OMAN, Abu Dhabi, Africa, Kenya, USA, for Annealing and Normalizing 

Bogie Hearth Furnaces are used for heat-treating of heavy and large steel parts that are otherwise difficult to load or carry in a pit type or a box furnace, the temperature and atmosphere varies depending on process and application such as tempering, annealing, soft annealing, normalizing, stress relieving, homogenizing and recrystallization with a ordinary operating temperature between 250 – 1200°C depending on application.

Bogie Hearth Furnace or Car Bottom Furnace Technical Specifications:

Bell Annealing Furnace Manufacturer in India for Wire Annealing, Coil Annealing, Strip Annealing and Normalizing

Bell Annealing furnace offers uniform temperature while keeping electricity or Gas consumption low, consistent quality and high production at low cost. Bell Furnaces are suited for annealing process of black, bright and spherodized annealing of steel coils, non-ferrous strips, wires and general heat treatment processes up to 1200°C. Bright annealing of cold-rolled steel strip coils and heat treatment of medium and thick hot-rolled plate, long products and wire coils can be done easily using a bell-type furnace.

Bell Annealing Furnace Technical Specifications:

What is the cost of Annealing Normalizing Furnace?