ignition tapes ?

[kiwieod]

I think these are for lighting thermite?i lit one with a match and it burned very bright,probably magnesium
can any one confirm the use of these

 

[sgdbdr]

Hi,

Some explanations :

https://extranet.artc.com.au/docs/eng/track-civil/workinstruct/rail/rts3602.pdf

12.10 Ignition Tapes
The Ignition Tape consists of a candlewick type material with a layer of magnesiumdeposited on it and its function is to ignite the aluminium powder in the portion tostart the exothermic reaction.A match, or even the preheater flame, would not easily ignite a portion, whereasmagnesium burns much hotter and usually one ignition tape reliably lights a portion.

12.11 Placing Ignition Tape
Ignition Tapes are supplied in containers of 55 and 1 of these should be placed inthe crucible on top of the portion after it is loaded ready to use (See Figure 1.6). Thecover or lid is now placed on the crucible. The container of tapes should be keptclose at hand in case another is needed when attempting to light the portion afterthe preheat

Cheers,

S.

 

[kiwieod]

thanks for that,its what I thought they were for