Us bold method - Riegeltechnik GmbH

Riegeltechnik GmbH
+49 201 81 41 77 15
Since 1957
Around the Clock 24h Worldwide
Repair of
cracked and broken
Gray and Steel castings
+49 201 81 41 77 15
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The bold method

The reasons for cracks and fractures in grey iron are manifold. Among others they arise from fatgue, overload, wrong operation, temperature variations and other external influences.

Withthe mothods developed by us, the damages can be repaired on the spot, provided the material has a minimum thciness of 8mm and the rupture can easily be accessed. according to circumstances we individually use bars or a steel lock.

The bar
Rectangular to the cracks, bar are inserted into already prepared slots.The number and size of the bars depend on the particular damage. Our bars consist of a heat and rust resisting high-strengh iron-nickel alloy. Due to cold forming a strengh of 90kg/mm² is reached

The steel lock
In the case of stronger base material and locally high stress, locks are preferred whose size and material properties are calculated on the basis of the respective conditions. The repair technique is similar to the Riegeltechnik®.
Our mechanics decide on the spot which techniqueto use best. If necessary both bars and steel lock may be applied to get the strengh of the basic material or even beat it in many cases.

Riegeltechnik GmbH
Laubenhof 15, D - 45326 Essen
Fon +49 201 81 41 77 15
E-Mail: info(at)
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