Core tip: In order to facilitate the flow and forming of the metal blank during forging, and to adopt reasonable measures to reduce the deformation resistance and save equipment energy, the following methods are generally used to achieve:
1) Grasp the material properties of forgings and select reasonable deformation temperature, deformation speed, and degree of deformation.
2) Promote the homogenization of the chemical composition and structure of the material, such as the high-temperature homogenization of large high-alloy steel ingots, so that the plasticity of the material is improved.
3) Select and determine the most favorable deformation process, such as low-plastic high-alloy steel forgings. To make the surface of the material under pressure during upsetting and prevent cracks due to tangential tension, sheath upsetting can be used to forge.
4) Using different tools to operate, the correct use of tools can improve the unevenness of deformation.
5) Improve the operation method to reduce the influence of friction and cooling when forging blanks to avoid upsetting.
6) The use of better lubrication measures can improve the surface condition of forgings and molds, reduce the influence of friction, and obtain uniform deformation, thereby reducing deformation resistance.
Jiahe County was established in 1639, covering an area of 699 square kilometers, governing 9 towns and 1 township, with a population of 420,000. It is one of the counties with the smallest area and the highest population density in the province.
