Showing posts with label heat treating process. Show all posts
Showing posts with label heat treating process. Show all posts

Wednesday, 13 August 2014

Heavy Machine Industries And Heat Treatment Tools


By definition, heat treating is the controlled process of heating and cooling of metals to change their mechanical and physical properties without changing the product design. This is the field that many of us are not familiar with, but it is a very important part of creating items we use in our day to days requirements. The process has played an important part in our influenced industry, military, and makes our lives easier thanks to the tools created because of this process.

Generally, during the Heat Treating Process there are two terms that may change the properties of alloy metals. The Martensite causes the crystal to deform intrinsically and the diffusion mechanism causes the change in Homogeneity of an alloy. Unlike the iron based alloys, most of alloys that are heat treatable do not experience the ferrite modifications. These metals are harden by the condensation. Depending on the level of temperature, a slow process is often referred to as age hardening. Many of the metals and non-metals when cooled quickly, exhibit a Martensite transformation.

When an alloy is cooled quickly, its insoluble atoms may not be able to migrate out of solution in time and its called Diffusion-less Transformation. The Heat Treating Process is used to accomplish one of three aspects of working with steel : Hardening, Softening or Material Modification. Heat treating metal is an important part of a number of design process; however, it is not something that one should take on a DIY project. If you think that you have a project that would benefit by using the heat treated metal, talk to the professional.

Thursday, 20 February 2014

Use Of Austempering


The process of Austempering was used extensively during World War II in the production of gun parts. It was found that this process resulted in parts and low distortion that were tougher than the tempered and quenched components they replaced. Some important gun parts are still routinely Austempered. However, the best equipment available for this process then was very inefficient. Therefore, this process was relatively very expensive.

The main aim of austempering is to provide the strength driven materials in different machine parts. The concept of this process is different from the traditional form of heat treating, in which there is fast quenching of austenite in fluid or oil at room temperature. It will form the martensite, which is hard, but at the same time, it needs tempering for becoming ductile and it is highly brittle.
The outcome of this process is dependent on the material used for the it.

The Austempered Ductile Iron is a specialty heat treated material that takes advantage of the low cost manufacture-ability and near-net shape technology of ductile iron castings to make a low cost, high strength, and excellent abrasion resistant material. Six grades of this process are available to address the property combinations of abrasion resistance, high strength, weldments and assemblies and toughness for converting from costly forgings. The Austempered Ductile Iron has found successful applications across many industries, including Mining and Construction, Agriculture, Heavy Truck, Railroad and Automotive.

Overall, this process is a well composed process, which helps to enhance strength, resistivity for wear and tear and toughness. It is better to get the process done through the commercial company of heat treating as they will work with proper processes.

Wednesday, 15 January 2014

All About The Heating Process

Heat treatment is the process used to modify the physical and mechanical properties of metal without altering the materials formation. It usually increased the strength of material. It is also used to modify the objective of some material aspect manufacture-ability like, improving the machine process, to improve its formability and restoring ductility after the cooling treatment. Somehow, it is also used to manufacture certain materials like glass. It also improves the performance of materials.

Usually in the process of Metallurgical, the heat treatment is being applied. To attain the preferred outcome such as hardening and softening of the product, the process of heat treatment includes the heating and chilling of such product from moderate to extreme high temperature. The heat treating process methods involves precipitation strengthening, case hardening, annealing, tempering and quenching.

Heat treatment process consists of a series of operations which have as their aim the improvement of physical properties of a material. In the case of steel these operations are hardening, which is composed of quenching and heating and tempering. For this process of heating, special large ovens are used which are big enough to store the work piece in right position in order to get the maximum exposure to the heated air in oven. For the high volume process annealing, special gas fired conveyor furnaces are used mainly. For the large work pieces or for high quality parts, especially the carbon bottom furnaces are used. These work pieces are often quickly cooled, once the process is completed.