AUTO PIERCING technology for magnet wire: SM Contact starts production of P-type splice band

Auto piercing by splice crimping is a cost-effective alternative to IDC terminals, soldering and spot welding in magnet wire applications. SM Contact launches production of splice band for piercing of enameled wires – P-type splice band, in addition to the standard one.

Magnet-piercing splice band is leveraged in connecting power/signal and magnet wires (coils) in electric motors, e-mobility (EV charging stations) and household appliances. It enables one-step reliable gas-tight connectivity between standard power wire and insulated magnet wire. Auto piercing technology offers advantages of a low cost and fast cycle time.

1 – Repeatability:
stable quality with the mechanical process and control of the splice band shape => stable electrical connection without component damage risk.

2 – Reduced cycle time:
by eliminating soldering and stripping operations (0.3 sec).

3 – Qualified and validated connection supported with data sheet:
all required parameters, such as pull force, compression rate, contact resistance, are reached by computer simulation and laboratory studies using a certain splice band.

P-type splice band provides a method of connection of an enameled magnet wire directly to wire or component.

Standard process – soldering and spot welding	Technology with P-type splice band
1. Stripping / burning insulation from the wire ends, 2. Soldering (welding) to wire or component.	1. Splice crimping of an unstripped magnet wire directly to wire or component.
– hard controlled process, – soldering puts components at risk of melting or burning and makes them breakable, – it can be difficult to solder near plastic parts.	– saving cycle time, – saving cost, – controlled process, – without heating, – easily scaled for different production volumes, – no pre-stripping of insulation.

P-splice band profile

Piercing serrations, penetrating varnish insulation used on copper and aluminium magnet wires:

P-splice band materials

SM Contact offers P-type splice band mostly in LA, also in CN.

Advantages of using P-type splice band by SM Contact with SM Crimp equipment:

1 – Zero tooling damage risk:
splice band characteristics are considered for connection qualification and machine settings.

2 – Optimal connection properties:
required parameters specified in the data sheet are reached by using a certain splice band – produced by SM Contact. Third-party splice band may not allow achieving these characteristics.

Please contact our Project Team for details: smcontact@smcontact.eu, +34 919490803