It is necessary to heat treat materials prior to mechanical processing for the following reasons:
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It is necessary to heat treat materials prior to mechanical processing for the following reasons:

Posted By George Alice     February 18, 2022    

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In spite of the fact that metal heat treatment technology is one of the most important treatment processes in the material production process, it has a number of significant advantages over other commonly used processing methods.

As a first and foremost, heat treatment only affects the internal microstructure or chemical composition (not the overall chemical composition) of a surface of a workpiece, which improves its performance while leaving the workpiece's overall chemical composition and shape largely unchanged. This technique's most notable characteristic is that it improves the inherent quality of the workpiece, which is generally not visible to the naked eye and thus difficult to detect.

 

 

 



Heating can be divided into four categories: annealing, normalizing, quenching (solid solution), and tempering (aging). Annealing is the first of these categories.

An annealing process is defined as the process of annealing, which is defined as follows:

It is referred to as annealing when the workpiece is heated to a specific temperature and maintained at that temperature for a specific amount of time depending on the size and material of the workpiece before being slowly cooled.

Primary objectives of annealing include lowering a material's hardness to a suitable degree and increasing its flexibility, as well as making subsequent processing easier and more efficient.

Bringing Things Back to a State of Normalcy

Initially, the workpiece is heated to an appropriate temperature and then allowed to cool in the open environment. When a material is normalized, the effect is similar to when it is annealed, except that the resulting structure is finer. This is often used to improve the cutting performance of a material by improving its cutting performance.

To achieve the desired hardness and grain refinement in steel, this process must be carried out before quenching and after quenching, as well as before quenching and hardening after quenching.

Quenching is a term that refers to the act of putting out a fire in its entirety.

It is necessary to cool the workpiece quickly after it has been heated and maintained at a comfortable temperature using a quenching medium, which can be anything from water to oil to other inorganic salts, organic aqueous solution, or other similar liquids. During the quenching process, the steel parts harden, but they also become brittle, which is a negative characteristic of the process.

The goal is to make the material harder and more wear resistant.

Changing one's mental attitude

To reduce the brittleness of steel parts, tempering is used in conjunction with other processes. For an extended period of time, it is necessary to maintain the quenched steel parts at a suitable temperature that is higher than room temperature but lower than 710°C, after which they must be cooled.

When quenching is eliminated, internal stress is generated, plasticity and toughness are improved, and strength is increased as a result.

In the field of processing technology, mechanical processing refers to the use of machine tool equipment to perform operations on various parts. Prior to and after the parts are processed by the machine tool equipment, the mechanical processing department will perform the necessary heat treatment processes on the parts. Following is a description of its function:

To begin, remove any internal tension that may be present within the blank. The most frequently encountered applications are castings, forgings, and welding parts.

Making improvements to the processing conditions will allow materials to be processed more easily in the future.

3. By incorporating new technologies, it is possible to improve the overall mechanical properties of metal materials.

In addition, it has the potential to raise the hardness of the material.

As a result, heat treatment processes, in addition to a rational selection of materials and a variety of forming processes, are frequently required.

Junying core business is CNC machining service, which ranges from prototypes to large-scale production. We have over 1000 customers in over 30 industries worldwide who rely on our 3/4/5 axis CNC machining centers, CNC turning equipment, CNC turning-milling equipment, CNC grinding machines, and other CNC machines, all of which are operated by highly trained manufacturing engineers.

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