Soldering connector to electric hob cable?

It is vital to do a proper crimp even if you borrow the tool. Solder will be useless at those temperatures.

Solder to a wire connected to a red hot hotplate? Seriously?

NT

For high current applications at high temperature, you need to make sure the crimps are good enough to be gas tight.

Yup, the solder will remelt when the element is on!

These are the crimp connectors that I have ordered:

They are very similar to the original NEFF ones. Does anyone know of a suitable crimp tool costing no more that £12.50

Screwfix have a product, but the shape of the connector means that you would have to use a size near the end of the tool.

It surely depends on the temperature of the solder melt point and the temperature at the solder joint which is expected. I'd have also expected special cable types here if its very very hot. Brian

Crimp tools tend to be priced according to the volume of their production. If not many are sold, a decent one won't be cheap. And you really do need the correct tool for the job in this case, as a badly made crimp is useless. And those flag type crimps are one of the most difficult to find a decent tool for.

That size terminal (1/4" spade) is common on older cars too. The tool I have for that which produces a perfect crimp cost 70 quid. But still doesn't do flag types properly.

En el artículo , Michael Chare escribió:

Soldering won't work at those temperatures and bodging it is iffy at the currents involved. You're just going to replicate the original problem, which was a poor connection.

Suggestion: take the insert out of a choc-bloc connector (i.e. remove the plastic surround - take out the screws and poke the metal connector out), and use that. Crimp a ferrule onto the wire end.

If you're able to find a choc-bloc insert large enough to accommodate both the element end and the wire end overlapped, I would do that to maximise the contact surface area.

I would be concerned that repeated thermal expansion/contraction cycles would make this solution unreliable.

Could one of the techniques being discussed in the Makita NiCad/NiMh thread be adapted to spot weld the connection?

Mike

Is the failure on solid or stranded wire? I'm not having trouble on stranded up to yellow size crimps?

BTW you can get ceramic choc-block for this. I used one to fix the failed crimp on the immersion heater in my last house.

it might well do - but it might work if done up real tight. A better bet than crimping with pliers anyway.

NT

It needs to me something that will connect to the male terminal on the ring

Silicone insulated wire. Readily available by the metre from eBay, used for battery powered RC cars

E.g.

Can't be done. Too hot. Alternative is brazing/silver soldering. Neither can you use copper push on terminals,they go soft and relax again due to the heat.