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RISThermal Analysis of Metal Flow at the Chip-Tool Interface in Metal Cutting
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The plastic flow of metal adjacent to the chip-tool interface is analyzed using a mechanical equation of state, which relates the variables stress, strain, strain rate, and temperature. Expressions ...
The Geometry of the Shear Zone in Metal Cutting
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The choice of a suitable trajectory shape and slip-line field for the shear zone must be influenced by the degree of work hardening and thermal softening, and is necessarily difficult. Although ...
The Dynamics of Closed-Die Forging With Mechanical Presses
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The kinetic energies of the crank mechanism and anvil and flash material are considered in order to develop a relation between forging load and the velocity of the upper die. Theoretical ...
Plastic Flow at the Chip-Tool Interface During Hot Machining
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The plastic flow of metal adjacent to the chip-tool interface when machining heated workpieces is examined theoretically. It is shown that all metallic workpiece materials possess an optimum ...
The Rolling of Very Thin Sheets
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Thin strip specimens were reduced to foil by passing them repeatedly between the rolls of a two-high mill at low speeds. Narrow specimens were tested to avoid complications caused by roll ...
The Plastic Flow of Surface Metal Layers
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Various aspects of the plastic deformation of metals adjacent to the surfaces of tools or dies are discussed. The influence of thermal conduction between the thin plastic layer and the hot ...
The Free Plastic Compression of Pure Metals
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The dynamic compression of a billet by the impact of a falling weight is analyzed with reference to the general plastic properties of pure metals. Theoretical results are compared with the ...
The Stress-State in the Shear Zone During Steady State Machining
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In order to calculate the stress state at any point in the shear zone, a new method has been developed which incorporates the effects of strain—hardening, strain-rate and temperature. Previous ...
A Theoretical Analysis of Temperature Distributions in the High Speed Forging of Hot Steel
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The power and forces required to fill a corner cavity in closed-die forging depend on the amount of transient thermal conduction from the heated billet into the cold die. The amount of this ...
The Filling of the Flash Gap in Closed-Die Forging
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The pressures required to drive overflow material into a flash gap of annular shape and ever-decreasing thickness are calculated in the presence of thermal conduction into the die. The behavior ...