Wind turbine blade, mold, manufacturing arrangement and method for manufacturing a wind turbine blade

A manufacturing arrangement for manufacturing a wind turbine blade, comprising a blade having a first and a second blade component connected with each other in an overlap region by thermal welding, the first blade component having a blade shell,

• a resistive element arranged between the first and second blade components in the overlap region as a remnant of the thermal welding, and
• an electrically conductive element extending through the blade shell and being electrically connected to the resistive element for supplying power to the resistive element during the thermal welding, wherein the electrically conductive element of the blade shell is electrically connected to the further electrically conductive element of the mold for supplying power to the resistive element of the blade for thermal welding.

A method for manufacturing a wind turbine blade, comprising the steps of:

• a) arranging a first and a second blade component such that they overlap with each other in an overlap region, wherein the first blade component comprises a blade shell and an electrically conductive element extending through the blade shell, wherein a resistive element is arranged between the first and second blade components in the overlap region, and the resistive element is electrically connected to the electrically conductive element, and
• b) connecting the first and second blade components to each other by thermal welding including supplying power through the electrically conductive element of the blade shell to the resistive element for heating the resistive element.