Heat treatment and application of forgings

2023-06-09

Forgings are a machining process. Forgings are objects in which metal is subjected to pressure to shape the required shape or suitable compression force by shaping and deformation. This force is typically achieved through the use of hammers or pressure. The forging process builds a delicate grain structure and improves the physical properties of the metal. In the real-world use of components, a correct design can make the particle flow in the direction of the main pressure. Forgings need to be consistent in every piece, without any porosity, inclusions, or other next time. This method produces elements with a high ratio of strength to weight. The advantages of forgings are stretchable length, shrinkable length, stretchable cross-section; Variable length, variable cross-section.

The heat treatment methods of forgings are as follows:

1. Incomplete annealing: heat treatment process of slow cooling after short-term heat preservation. In order to obtain spherical pearlite and spherical carbide structure, reduce hardness. Mainly used for steel bearing steel cold mold.

2. The purpose of complete annealing (usually annealed) is mainly to eliminate forging stress, reduce hardness, improve plasticity and improve cutting performance; Eliminate coarse managers, improve organization, and prepare the organization for later heat treatment. Generally used in subconcentric steels.

3. The treatment purpose of general spheroidization annealing is to enable steel to obtain a fine-grained carbide structure dispersed on the ferrite matrix. So that the steel gets a fairly uniform final property. For pre-heat treatment of bearing parts, tools, etc.

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The difference between forging and casting, the basic process and process flow of forging

In mold manufacturing, forging and casting are the most commonly used manufacturing processes, but there are still often people who confuse these two manufacturing processes, thinking that forging and casting are the same, a manufacturing process, but there are two names.

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Where is the difference between forging and casting

Casting: The process of melting metal into a liquid that meets certain requirements and pouring it into a mold, then cooling, solidifying, cleaning to obtain a casting (part or blank) with a predetermined shape, size and performance. The low cost of blanks produced by casting, especially for parts with complex shapes, especially those with complex cavities, shows their economy. At the same time, it has a wide range of adaptability and good comprehensive mechanical properties.

2023-06-09