|
Vibratory Stress Relief
Vibratory Stress Relief, often abbreviated VSR, is a non-thermal Annealing (materials science), stress relief method used by the metal working industry to enhance the dimensional stability and mechanical integrity of castings, forgings, and Welding, welded components, chiefly for two categories of these metal workpieces: :*''Precision components'', which are machined or aligned to tight Geometric dimensioning and tolerancing, dimensional or geometric tolerances. Examples include machine tool bases or columns, components of paper mill, mining equipment, or other large-scale processing machinery, and centrifuge rotors. :*''Heavily loaded metal workpieces'', which are components designed and built with the ability to withstand heavy loads. Examples include lifting Yoke, yokes, Clamshell bucket, clamshell buckets, Crane (machine), crane bases, vibratory screening system frames, ingot processing equipment, and rolling mill equipment. This stress is called ''residual stress'', because i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Annealing (materials Science)
In metallurgy and materials science, annealing is a heat treatment that alters the physical and sometimes chemical properties of a material to increase its ductility and reduce its hardness, making it more workable. It involves heating a material above its recrystallization temperature, maintaining a suitable temperature for an appropriate amount of time and then cooling. In annealing, atoms migrate in the crystal lattice and the number of dislocations decreases, leading to a change in ductility and hardness. As the material cools it recrystallizes. For many alloys, including carbon steel, the crystal grain size and phase composition, which ultimately determine the material properties, are dependent on the heating rate and cooling rate. Hot working or cold working after the annealing process alters the metal structure, so further heat treatments may be used to achieve the properties required. With knowledge of the composition and phase diagram, heat treatment can be used to adj ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
