Cold pressure welding machine
General information about cold pressure welding
Cold pressure welding is the simplest amd most cost-efficient method for connections in electrical coils from copper and aluminum strips with connection bars or leads without using heat, fillers or fluxes. Round wire sections, different materials and materials of different sizes can all be welded together with our proven cold welding technology. A cold weld is basically stronger than the parent material while having the same electrical characteristics.
The surfaces are welded together under high pressure at room temperature, which results in molecular bonds that were highly durable and reliable. In order to obtain an ideal weld all contaminants like oxides, oils, chemicals etc must be removed. Only clean surfaces should be brought together.
Aluminium and copper can be welded together in any combination (Al-Al, Al-Cu, Cu-Cu). We offer you to test welding your material to confirm its suitability for cold welding.
Cold pressure welding machine type KSW 80/150/220
With the mobile cold pressure welding device type KSW 220 we provide an extremely economic and flexible working device for your connection technology. It is especially appropriate for welding of conductors at the beginning and end of a winding. It provides all the advantages of cold pressure welding technology such as high productivity, quality of the connection, cleanliness and the possibility to weld different materials like copper and aluminum together.
Example of use
Technical data of cold pressure welding machine KSW 80/150/220, mobile unit
| type | KSW 80 | KSW 150 | KSW 220 |
|---|---|---|---|
| Pressing force (kN) | 80 | 150 | 220 |
| max. strip thickness (mm) aluminum strips |
1.2 | 2.5 | 4.0 |
| max. strip thickness (mm) copper strips |
1.2 | 2.0 | 2.5 |
| max. connection thickness (mm) | 2.5 | 8.0 | 14.0 |
| max. connection width (mm) | 50 | 150 | 150 |
| hydraulic drive max. (bar) | 650 | 650 | 650 |
| pressing power regulable |
yes | yes | yes |
| weight of the press (kg) | 10 | – | 32 |
Pressing tools
Tool choice
The press tools are selected from the table. If an intermediate dimension of the strips is used, it will be considered for tool choice in the next higher dimension.
| strip thickness (mm) |
connection thickness (mm) | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0,17 | 0,2 | 0,3 | 0,4 | 0,5 | 0,6 | 0,8 | 1,0 | 1,2 | 1,5 | 2,0 | 2,5 | 3,0 | 4,0 | 5,0 | 6,0 | 8,0 | 10,0 | 12,0 | 14,0 | |
| 0,025 | 110 | 113 | 116 | 117 | 119 | 120 | 123 | 126 | 127 | 128 | 131 | 132 | 134 | 137 | 138 | 140 | 142 | 143 | 145 | – |
| 0,03 | 110 | 113 | 116 | 117 | 119 | 120 | 123 | 126 | 127 | 128 | 131 | 132 | 134 | 137 | 138 | 140 | 142 | 143 | 145 | – |
| 0,035 | 110 | 113 | 116 | 117 | 119 | 120 | 123 | 126 | 127 | 128 | 131 | 132 | 134 | 137 | 138 | 140 | 142 | 143 | 145 | – |
| 0,04 | – | 113 | 116 | 117 | 120 | 120 | 123 | 126 | 127 | 128 | 131 | 132 | 134 | 137 | 138 | 140 | 142 | 143 | 145 | – |
| 0,05 | – | 113 | 116 | 117 | 120 | 120 | 123 | 126 | 127 | 128 | 131 | 132 | 134 | 137 | 138 | 140 | 142 | 143 | 145 | – |
| 0,06 | – | – | 116 | 119 | 120 | 122 | 123 | 126 | 127 | 128 | 131 | 132 | 134 | 137 | 138 | 140 | 142 | 143 | 145 | – |
| 0,08 | – | – | 116 | 119 | 120 | 122 | 123 | 126 | 127 | 128 | 131 | 132 | 134 | 137 | 138 | 140 | 142 | 143 | 145 | – |
| 0,10 | – | – | 116 | 119 | 120 | 122 | 123 | 126 | 127 | 128 | 131 | 132 | 134 | 137 | 138 | 140 | 142 | 143 | 145 | – |
| 0,12 | – | – | – | 119 | 120 | 122 | 125 | 126 | 127 | 128 | 131 | 133 | 134 | 137 | 138 | 140 | 142 | 143 | 145 | 146 |
| 0,15 | – | – | – | – | 120 | 122 | 125 | 126 | 128 | 129 | 131 | 133 | 134 | 137 | 138 | 140 | 142 | 143 | 145 | 146 |
| 0,18 | – | – | – | – | – | 122 | 125 | 127 | 128 | 129 | 131 | 133 | 134 | 137 | 139 | 140 | 142 | 143 | 145 | 146 |
| 0,20 | – | – | – | – | – | 123 | 125 | 127 | 128 | 129 | 131 | 133 | 134 | 137 | 139 | 140 | 142 | 143 | 145 | 146 |
| 0,25 | – | – | – | – | – | 123 | 126 | 127 | 128 | 129 | 131 | 133 | 135 | 137 | 139 | 140 | 142 | 143 | 145 | 146 |
| 0,30 | – | – | – | – | – | 123 | 126 | 127 | 128 | 129 | 131 | 133 | 135 | 137 | 139 | 140 | 142 | 143 | 145 | 146 |
| 0,35 | – | – | – | – | – | – | 126 | 128 | 128 | 129 | 132 | 133 | 135 | 137 | 139 | 140 | 142 | 144 | 145 | 146 |
| 0,40 | – | – | – | – | – | – | – | 128 | 129 | 129 | 132 | 134 | 135 | 137 | 139 | 140 | 142 | 144 | 145 | 146 |
| 0,50 | – | – | – | – | – | – | – | 128 | 129 | 131 | 132 | 134 | 135 | 137 | 139 | 141 | 142 | 144 | 145 | 146 |
| 0,60 | – | – | – | – | – | – | – | – | 129 | 131 | 132 | 134 | 135 | 138 | 139 | 141 | 142 | 144 | 145 | 146 |
| 0,80 | – | – | – | – | – | – | – | – | – | 131 | 134 | 134 | 137 | 138 | 139 | 141 | 142 | 144 | 145 | 146 |
| 1,0 | – | – | – | – | – | – | – | – | – | – | 134 | 135 | 137 | 138 | 140 | 141 | 142 | 144 | 145 | 147 |
| 1,2 | – | – | – | – | – | – | – | – | – | – | 134 | 135 | 137 | 138 | 140 | 141 | 143 | 144 | 146 | 147 |
| 1,5 | – | – | – | – | – | – | – | – | – | – | – | – | 137 | 139 | 140 | 141 | 143 | 144 | 146 | 147 |
| 1,8 | – | – | – | – | – | – | – | – | – | – | – | – | – | 139 | 141 | 141 | 143 | 145 | 146 | 149 |
| 2,0 | – | – | – | – | – | – | – | – | – | – | – | – | – | 139 | 141 | 142 | 143 | 145 | 146 | 149 |
| 2,5 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 141 | 142 | 144 | 145 | 146 | 149 |
| 3,0 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 142 | 144 | 145 | 146 | – |
| 3,5 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 145 | 146 | 147 | – |
| 4,0 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 146 | 149 | – |
| 4,5 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 147 | 149 | – |
| 5,0 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 148 | – | – |