In the past 20 years, with the advancement of electrophoretic coating technology, both anodic electrophoretic coatings and cathodic electrophoretic coatings have made great progress.
Anodic electrophoretic coating:
The first generation: low voltage, low throwing power, salt spray resistance below 100h. For the use of the car interior can be painted, high-tech auxiliary cathode. The maleic anhydride oil-phenolic aldehyde and epoxy ester developed in the 1960s The anodic electrophoretic coating made of the main raw material is represented by the following parameters: film thickness: 18-20μm, pH: 8-9, construction voltage: 20-40V, throwing power (steel tube method): ~10% or so, Salt spray resistance: the final phosphating steel plate is 24h, and it is 48h after phosphating.
The second generation: high voltage, high throwing power. The anodic electrophoresis of polybutadiene resin developed and put into operation in 70 years is representative, the salt spray resistance on the phosphating steel plate is increased to 240h or more, and the throwing power is >17%. The construction voltage is increased to 100-180V.
The third generation: high voltage, high throwing power, durable high humidity and heat, can be used as a bottom lacquer and a varnish finish. In the early 1990s, the domestically developed B11 acrylate light-colored high-through-air anodic electrophoretic paint and D2035 anodic electrophoretic paint (from Helan AKZO company introduced formula manufacturing) as the representative.
Incremental Encoder is commonly used, and Absolute Encoder is used if there are strict requirements on position and zero position. Servo system should be analyzed in detail, depending on the application situation. Commonly used incremental encoder for speed measurement, which can be used for infinite accumulation measurement; Absolute encoder is used for position measurement, and the position is unique (single or multiple turns). Finally, it depends on the application situation and the purpose and requirements to be realized.
Incremental Linear Encoders,Linear Optical Encoder,Linear Position Encoder,Encoder Bearing Tester
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