How to choose heavy forgings?

Heavy forgings play a very important role in engineering, so how to process heavy forgings has become the content of everyone's attention, and then mainly to share with you some methods of processing heavy forgings.
Heavy ring forgings is to roll the forgings into a round shape, which can basically control the dimensional tolerance of the products and reduce the amount of machining. But when choosing ring forgings, we should also be careful not to choose defective ring forgings. If we choose defective ring forgings, it will seriously affect the use of the project, and it will also have a certain risk. So, how to choose heavy forgings?
First of all, we should look at the surface of the forgings: if the surface has cracks, folding, wrinkling, pressure pits, orange peel, blisters, scars, corrosion pits, bumps, foreign objects, not full, pits, lack of meat, scratches and other defects, it is recommended that you do not buy.
The processing allowance size analysis of heavy forgings also has related requirements for the material of heavy forgings. The billet can not be used as forging parts for forging processing. And different shapes of parts should also ensure a certain forging ratio, can not use the size of the same round steel forging production in the process of forging processing temperature, forging frequency, pressure size these have strict requirements. The metal crystals in heavy forgings are smaller and the structure is more compact, and the forging process does not break the metal fibers of the raw material and allows for smoother metal lines.

These advantages of heavy forgings are not easy to say, these are mainly due to its strict technical requirements. The allowance size of heavy ring forgings should meet the international safety standards, and the material must be consistent with the material of the parts, and the chemical composition needs to meet the national uniform standards. At the same time, the material list needs to be issued. The main ways to reduce hydrogen content in steel are vacuum degassing or vacuum pouring. For some forgings with higher requirements, electroslag remelting technology can be used to further improve the purity of steel. Post-forging heat treatment: Dehydrogenation annealing to diffuse hydrogen from steel.
The above is the relevant method of heavy forging processing, of course, only for your reference, at the same time, also hope to be helpful to you.