The difference between steel plate and forging
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Nowadays, we often see the concept of forgings. Aren’t forgings made of steel plates? Why is it called forgings and not steel plates?
Obviously, forgings are not made of steel plates, but forged, and their mechanical properties are better than parts made of equivalent steel plate materials. There is a difference between the two.
Haha, the steel plate is rolled, and the mechanical properties on the steel plate are directional (such as transverse and longitudinal). Forgings are forged, and their properties are better than those on the steel plate.
Forgings can also be forged from steel plates. You will know if you read the forging standards carefully. I seem to remember that there is such a sentence. . . . . steel plate. . . 1.6
“Forgings are not machined from steel plates, but forged.” There is a problem with this sentence. We often use steel plates to forge flanges, pipes and other small forging blanks. The forging has uniform structure and good anisotropy. ； The steel plate is rolled, the force is directional and the anisotropy is poor.
The steel used for forgings should be killed steel smelted in open hearth, electric furnace or oxygen converter. All properties are better than steel plates.
Forgings are also forged from steel plates.
In general, high-strength gears and high-strength transmission shafts are often made of forgings.
Forgings are metal blanks that undergo plastic deformation through forging to obtain certain mechanical properties, shape and size. Forging can eliminate defects such as loose as-cast metal produced during the smelting process and optimize the microstructure. At the same time, the complete metal streamlines are preserved, so the forgings have better mechanical properties. The materials used for forging are mainly carbon steel and alloy steel of various compositions, followed by aluminum, magnesium, titanium, copper, etc. and their alloys. The original states of materials include bar stock, ingot, metal powder, liquid metal, etc.
I have never understood the difference between steel, steel plate and forging. After reading this post, I seem to understand a little bit.
The performance of forgings is much superior to steel plates of the same thickness!
The manufacturing process is different. The steel plate is produced in one step. For forging, the blank is forged with a machining allowance and then machined to size. The cost is much higher. Ultrasonic flaw detection can detect the quality difference between the two. In addition, the mechanical properties are also different.
Steel pipes are rolled. But the performance of forgings is much superior than that of forgings
Forgings are forged, but steel plates are not necessarily forged, which means that steel plates can be rolled or forged.
gain knowledge, learn* , the key point is that the performance of forgings is better than that of steel plates