Hot forging is a process to obtain components with better mechanical characteristics and superior surface quality. Furthermore, compared to other metal deformation processes, Hot forging allows greater efficiency and repeatability of the process.
Moreover, the high temperature allows maximum deformation of the material, and the achievement of complex geometries.
Hot forging: properties
Hot forging gives to components high mechanical resistance. In fact, the molecules and fibers of the metal are aligned, distributed and compacted according to the lines of force, refining the grain structure.
In addition, this process gives to components:
- greater ductility and minimal effects of springback/ hardening;
- surface without porosity;
- zero risk of blowholes and inclusions;
- reduction of the resistant section;
- minimum allowances on the raw part;
- reduction of chemical inconsistencies;
- reduction of internal defects, and less waste in subsequent processing.
The procedure
Strengthened by the experience handed down by six generations of Valsecchi family blacksmiths, the hot forging performed by Inginera follows the following steps:
- Definition of the forging drawing, including drafts, radii and allowances
- Procurement of first choice material, only from Italian and Swiss suppliers
- Cutting of the material, based on the article to be obtained
- Heating of the material in induction or gas ovens
- Drop forging, of a hammer, or hydraulic, of a press, between the upper and lower figure of the die
- Deburring of excess material, that for various technical reasons it’s not just a waste, but of fundamental importance for the correct filling of the die
- Cooling of the part, in air, water or oil
- Possible heat or surface treatment
- Possible machining
Why hot forging?
In conclusion, hot forging is the process that most optimizes production costs and mechanical characteristics given to components.
