What are the characteristics of forged machined forgings?

Release time:

2024-01-19 09:41

Forging plant forging products are plastically deformed through forging processing, forging processing is the use of external forces to produce plastic deformation of the raw material forging, to obtain the required size, shape and performance of the forging blanks or parts of the processing method. Through the forging process can eliminate the metal in the smelting process produced in the cast state of loose and other defects, optimise the microstructure, and at the same time, due to the preservation of the integrity of the metal forging flow line, greatly enhancing the performance of forgings in use.

Forging

Forging is one of the main methods for the production of blanks and parts in machinery manufacturing, often divided into free forging, die forging and so on. Compared with other processing methods, forging processing has the following characteristics: improve the internal organisation of forgings, improve mechanical properties. Forging blanks after forging process, its organisation, properties have been improved and enhanced, forging process can eliminate the metal ingot internal porosity, shrinkage and dendritic crystal defects, and due to the plastic deformation and recrystallisation of the metal, can make the coarse grains refinement, to get the dense metal organisation, so as to improve the mechanical properties of the forgings. In parts design, if the correct choice of parts of the force direction and fibre tissue direction, can improve the impact resistance of forgings.

High material utilisation. Metal plastic forming mainly relies on the relative positional rearrangement of the form tissue of the metal, without the need to remove the metal.

Higher productivity. The forging process is generally using presses and forging hammers to carry out the forming process.

The accuracy of the blanks or forgings is high. With the application of advanced technology and equipment, less cutting or no cutting machining can be achieved.

Metal materials used in forging should have good plasticity, so that under the action of external forces, can produce plastic deformation without rupture. Commonly used metal materials, cast iron is a brittle material, poor plasticity, can not be used for forging. Steel and non-ferrous metals such as copper, aluminium and its alloys can be pressure machined in the cold or hot state.

It is not suitable for forming more complex shape forgings. Forging processing is formed in the solid state, compared with casting, the flow of metal is restricted, generally need to take heating and other process measures to achieve. It is difficult to manufacture parts or blanks with complex shapes, especially those with complex internal cavities.

Because of the forging has the above characteristics, so bear the impact or alternating stress of the important parts (such as transmission spindle, gear ring, connecting rod, track wheel, etc.), should be used forging blank processing, so forging processing in machinery manufacturing, mining, light industry, heavy industry and other industries are widely used.

Previous page

Matters to be noted when polishing forgings

What are the trends in forging?

Next page

Other Dynamics

Matters to be noted when polishing forgings

A good polishing surface for forgings should be clean, bright and flat. However, poor polishing often results in a number of polishing defects, the common ones being: pockmarks, contamination spots, scratches, trailing and shedding of non-metallic inclusions. If such defects occur, it is necessary to re-polish the sample.

What are the characteristics of forged machined forgings?

Forging plant forging products are plastically deformed through forging processing, forging processing is the use of external forces to produce plastic deformation of the raw material forging, to obtain the required size, shape and performance of the forging blanks or parts of the processing method.

What are the trends in forging?

Mainly to improve their mechanical properties (strength, plasticity, toughness, fatigue strength) and reliability. This requires better application of the theory of plastic deformation of metals; application of materials with better intrinsic quality, such as vacuum-treated and vacuum-smelted steel;

What are the contents of quality inspection of forgings?

The existence of forging defects, some will affect the quality of subsequent processes or processing quality, some seriously affect the performance and use of forgings, and even greatly reduce the service life of manufactured parts, endangering safety.

Why are there white spots on forgings?

Usually the heat treatment of large forgings is combined with the cooling of the forgings with each other, due to the large cross-section size of large forgings and the complexity of the production process.

What is meant by decarburisation during heating of forgings?

Forging to pay attention to a lot of things, but not every item to pay strict attention to, forging heating process decarburisation is what it means? The following article is mainly to tell you.