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.
Advantages of auto piercing technology:
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.
Standard process vs. Technology of splice crimping with P-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 |
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| 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
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| Piercing serrations, penetrating varnish insulation used on copper and aluminium magnet wires: |
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P-splice band materials
SM Contact offers P-type splice band mostly in LA, also in CN.
| LA (Brass) |
CN (Copper Nickel) |
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| Typical applications | Standard applications | Perfect corrosion resistance. Weldable. |
| Composition | Brass CuZn30 | CuNi9Sn2 |
| Resistance (K coeff.) | 3.55 | 8.5 |
| Temperature range | -80..+120°C | -80..+400°C |
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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
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