What materials are commonly used in force sensors

Force transducer by one or several can cause deformation after tolerance of polyurethane elastomer, and can induction this bridge circuit, composed of independent variables of the resistance strain gauge (e.g., wheatstone bridge), and the resistance strain gauge can be fixed paste should be variable in polyurethane elastomer and the conduction glue and protection of the electronic circuit of sealant of three most force transducer, etc. The following xiaobian and we briefly introduce the force sensor material.

Strain gauge and resistance element materials

The composition of the resistance strain gauge is complex, and it is a composite product. The substrate of the strain gauge and the copper strain gauge are in ever-changing combination. Generally, the substrate is made of polymer film material, and the strain material is of high purity constantan. The quality of the resistance strain gauge is not only related to the base material and the metal purity of the composite, but also related to the composite technology, etching technology and technology, etching chemical material and post-treatment technology and material.

Force transducer

Elastomer material

Alloy steel material is generally selected, which has the rigidity to ensure the consistency of deformation and deformation recovery, and has good weather resistance and corrosion resistance.

Wire sealing materials and methods

Each component of a force transducer affects the final technical performance of the transducer, and failure is most likely to occur at the bottleneck without proper wire fixation or sealing. Especially when the sealing head fixed wire is installed, the material and fastening strength of the fastener will also affect the final technical performance of the force sensor.

Material of adhesive for SMT

Resistance strain gauge patch adhesive mainly USES two-component epoxy adhesive series, the performance of polymer chemical products is closely related to the physical and chemical indexes of each component.

Wire material of force transducer

The wire is still a part of the force sensor, the metal material of the force sensor wire, silver-plated wire conduction effect is better than copper wire, copper wire conduction effect is better than aluminum wire, its role is self-evident.

Sealant material

Special silicone rubber sealant series are used in the initial stage of force sensor with insufficient welding technology and equipment. Silicone rubber has long-term chemical stability, therefore, anti-corrosion, moisture-proof, aging resistance, insulation and other properties of excellent.