Selective electroplating method for strain gauge alloy foil plate

The invention discloses a selective electroplating method for a strain gauge alloy foil plate. The method comprises the following steps: carrying out alkaline electrolysis oil removal on the strain gauge alloy foil plate; uniformly coating the surface of the strain gauge alloy foil plate with a photosensitive mask material, exposing the position where the strain gauge bonding pad needs to be formed, and spraying the strain gauge alloy foil plate with a 5%-10% sodium hydroxide solution to remove the uncured photosensitive mask material in a photoetching area on the surface of the strain gauge bonding pad; taking a stainless steel plate as a cathode, taking a strain gauge alloy foil plate as an anode, soaking the cathode and the anode in the diluted electrochemical micro-etching liquid, and connecting a power supply; the strain gauge alloy foil plate with the micro-etched surface is taken out and washed with clear water, and then acid activation is carried out; carrying out metal electroplating on the strain ga