I have just engaged in the sales of induction heat treatment equipment, not a professional heat treatment technician. Yesterday, a user consultation, "steel ball is forging good or casting good?"" Ask me, and ask my friends for answers.
The forging is better. Metal can improve its microstructure and mechanical properties after forging. After casting forging method of hot deformation due to metal deformation and recrystallization, the coarse dendrite and columnar grains turned into finer grain size, uniform equiaxed grain, so that the original ingot segregation, porosity, porosity, slag compaction and welding, the organization becomes more closely, improve the plasticity and mechanical properties of metals.
Casting is a kind of metal hot processing technology which has a history of about 6000 years. China has entered the heyday of bronze casting around 1700 BC to 1000 BC, and has reached a fairly high level in technology. Casting is the method of casting liquid metal into the casting cavity which is in accordance with the shape of parts. After cooling and solidification, it can obtain parts or blanks. The cast material is mostly solid but heated to liquid metal (copper, iron, aluminum, tin, lead, etc.), while the mold material can be sand, metal, or even ceramic. The methods used will vary in response to different requirements.
Forging is a kind of pressure on the metal material by forging machinery, the processing method of plastic deformation in order to obtain a certain mechanical properties, shape and size of forging, forging (forging and stamping) the two part of. By forging can eliminate the casting defects such as loose metal produced in the smelting process, the microstructure is optimized, and the preservation of the integrity of the metal flow, the mechanical properties of forgings generally better than the same materials of casting. In the related machinery, the important parts with high load and severe working conditions, in addition to the relatively simple rolling plate, profile or welding parts, more forgings are used.
