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Quality in manufacturing

The Ramnäs Bruk Quality Assurance System conforms to the international quality standard of ISO 9001:2008 and the company holds product approvals from all major classification societies:



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Ramnäs Bruk Quality Management System has successfully been certified by Det Norske Veritas Certification AB and now conforms to the new ISO standard ISO 9001:2008.
You can also read our Quality Policy here: Ramnäs Quality Policy
The three most important factors when producing high quality chains are the material, the welding procedure and the heat treatment of the chain. Apart from the manufacturing, thorough testing and qualified inspection are also of vital importance.
Material
Ramnäs Bruk AB uses only steel from steelworks qualified and approved by classification societies. All material is thoroughly inspected upon arrival.


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Welding the link
Ramnäs Bruk uses linear production and applies micro process control and recording of every individual flash butt weld.
Heat treatment

Furnace temperature, water temperature, pressure and chain speed are continuously recorded. Nonconformance is recorded and corrective action is initiated.
Ramnäs Bruk has developed unique routines, invested in modern equipment and has skilled personnel to perform manual inspection and automatic testing.
Some of these routines are:
  • Manual and automatic control at heating of blanks
  • Pre heattreatment inspection
  • Visual control of the shape of each link
  • Visual control of trimming results of each weld
  • Inspection and control at forging
  • Hot link bend test
  • Fatigue test i.e. breakload and proofload
  • Shotblasting and checking surface cleanliness
  • Magnetic particle examination, MPI, performed by certified operators
  • Ultrasonic inspection, performed by certified operators

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