The T3 one shot crucible

An outstanding and groundbreaking Railtech Deutschland innovation was the development of a disposable crucible with an integrated portion and tapping system, for quick and simple production of reproducible welding applications. Until the advent of this innovation, aluminothermic weld portions were mainly cast in what are known as long life crucibles, whereby the aluminothermic portions and the tapping system (thimble) were manufactured as standalone components. Our innovation greatly improved and simplified the process in terms of user friendliness, quality and work safety and has enabled our company to sell its products in all key markets worldwide.

Use and cost effectiveness

  • Welding preparation and the welding process itself take only a minimal amount of time.
  • Simple and rapid disposal, because the fireproof inner crucible disintegrates.
  • Thanks to intelligently scaled portion sizes, a broad spectrum of possible profiles can be covered with a relatively small inventory.
  • No supplemental portion is needed for large gaps (L50, L70).
  • Outstanding process stability reduces error rates, thus minimizing possible repair expenditures.


Technical data

  • Our one shot disposable is ready to use without any preparatory steps; nor does it need to be filled with portions.
  • The factory-installed tapping thimble minimize process errors of the type that occur with manual use of long life crucibles, plus anomalies such as freezing and delayed opening.
  • The defined crucible profile allows for smooth and continuous reaction sequences.
  • The crucible cover is built in such a way as to prevent reaction-mass leakage.
  • The centered position of the disposable crucible encloses the welding-form inlet area.
  • The short drop height of the molten steel helps to prevent impurities from being incorporated into the welding material.
  • The generously proportioned outer jacket mitigates direct external impacts and protects the fireproof crucible from damage.
  • The weatherproof packaging remains in place until the product is used.

Overview of our processes:

  • SkV-P & SP
  • LP
  • LP groove
  • SKS

Realization in steel jackets

The T3 is also available with our STARTWEL® starter system

Simple and rapid disposal