Home     Kontakt     WIAP MEMV      Sprachen      English     News     Neumaschinen     Umbauten

 

                                                                             

                                     

 

Introduction: MEMV Metal relax with vibration

Already decades ago, it was proposed that in the metal by the machining

caused by shaking or vibration of the workpiece. For this purpose the

workpiece is placed on a vibrating table or by means of a mounted vibrating

device shaken or vibrated. This can take about 5 to 30 minutes. For larger

and heavier workpieces were also important longer vibrational times are

known, which is, however, different reasons. When vibrating, the residual

stresses over the whole workpiece, so not only on the surface. The work-

piece can be further processed. Of the tension release is the strongest at

the beginning of vibration, however, effectiveness then flattens quickly.

This procedure is often connected with several unknowns and requires

some and knowledge or appropriate guidance. Although it has numerous

advantages compared to the heat dissipation, namely low time and energy

expenditure, avoiding heat distortion and of scale contamination of the

workpiece, the use of the vibration relaxation often spared.

 

There are three types of residual stresses. The self-tensioning of the first

kind is macroscopic and is produced thermally by the edge and the core

of a workpiece after appropriate heating. Cool down quickly. With the

residual stresses of the second kind comes by phase transformations

or formation of excretions local microstructures. In the case of the residual

stresses of the third kind dislocations are surrounded by a stress field.

 

A prerequisite for the proven and successful shape stabilization by vibration

is a reduction of the macroscopic residual stresses in the workpiece, that is,

the stresses of the first kind requires at least a local crossing of the flow

boundary, which is influenced by various factors. They are called high

residual stresses, which are superimposed by rectified load voltages or
local excesses of load and residual stresses through notches, cracks or flaws.

 

 

 

 

 

WIAP DM4C machine bed vibration relaxation WIAP MEMV Sweden   hp/1cw

 

Stands Vibrating Wiap MEMV. Metal   hp/cw

 

Crane with vibration relax   hp/cw

 

 

            

Home     Kontakt     Impressum     Sitemap