Recently we introduced 50 tons aging treatment equipment, greatly advance the stability and timeliness of products.

   After moulding the castings, traditional crafts are all setting out in open-air, to naturally lessen and homogenize the internal remaining pressure, then to stabilize the dimensional precision, but it takes about 12 months long time to realize. While using aging treatment equipment can shorten to one month, and will be more excellent in against pressure resistance, non-deformability and dimensional precision than setting out in open-air.

   Attached:

   The definition of Vibratory Stress Relief
   It describes such a physical process: Making use of a kind of strict controlled vibration energy, processing metal workpieces to solve problem of dimensional change and payload capability caused by internal remaining pressure after the processing. VSR is excellent in eliminating, reducing and homogenizing the internal remaining pressure of metal workpieces, in enhancing the ability of pressure resistance and non-deformability, and in stabilizing dimensional precision.

  The principle of Vibratory Stress Relief

Analysed from the microscopic aspect that Vibratory Stress Relief is regarded as one type of additional stress which bestow on parts with a kind of circular loading. When the workpieces are vibrated, alternating stress bestowed on parts and the residual stress will stack up. When the result of stress superposition reach at certain values, the most serious parts on stress concentration will exceed yield limit of materials, then bring about plastic deformation, which lower the residual stress peak value and strengthen metal base, then engender the same function on other parts that endure serve stress concentration till vibration additional stress and the algebraic sum of residual stress superposition cannot cause any plastic deformation. At this moment, the process of vibration elimination, residual stress homogenization and metal reinforcement are concluded.