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The process known as “Hot Forming” or “Hot Stamping” has gained visibility as a suitable solution and has fostered many areas of research aiming to improve this method. The main difference between hot and conventional stamping method is the heating of the material above austenitization temperature, before forming.
The fundamentals of plastic deformation, i.e., metal flow, flow stress of materials, testing methods to determine materials properties, and flow rules are discussed in Chapters 3, 4, and 5. Chapters 6 and 8 cover the significant variables of the forging process such as friction, lubrication, and temperatures.
Metal forming can be defined as a process in which the desired size and shape are obtained through the deformation of metals plastically under the action of externally applied forces. Metal forming processes like rolling, forging, drawing etc. are gaining ground lately.
The high heat employed mitigates the risk of strain hardening during deformation of the material. By using the isothermal hot forging technique, fabricators—such as Wichard—also reduce the risk of oxidation. Hot forging is suitable for the fabrication of technical components and formable metals.
Material Properties in Metal Forming. Desirable material properties: Low yield strength and high ductility. These properties are affected by temperature: Ductility increases and yield strength decreases when work temperature is raised. Other factors: Strain rate and friction.
1 sty 2012 · The required process systems for mass production of hot forming automotive structure of high strength steel includes the temperature system from heating to stamping process, the transmitting time system of steel and parts, the rate and control of hot forming, the control of cooling rate of the mold, heating furnace, the thermal fatigue ...
1. Topic. High temperature deformation of crystalline materials: Structural and mechanical basis. Basic mechanisms of plastic deformation. Hardening and softening during the forming. The phenomenon of superplasticity. Types of recrystallization. Textural development in plastic deformation.
