Brakes currently have disc brakes and drum brakes as well as air brakes. Many older cars are front and rear drums. Many cars are now disc brakes. Because the disc brakes have better heat dissipation than the drum brakes, in the high-speed braking state, it is not easy to cause thermal decay, so the high-speed braking effect is good. However, in the case of a low-speed cold brake, the braking effect is not as good as the drum brake. The price is more expensive than the drum brake. Therefore, many medium and high-class cars now use full-disc brakes, while ordinary cars use front and rear drums, while relatively low-speed, and require heavy-duty trucks and buses, still use drum brakes.
The drum brakes are sealed and shaped like drums. There are also many brake pots in China. It is rotating when driving. Two curved or semi-circular brake shoes are fixed inside the drum brake. When the brakes are applied, the two brake shoes are externally stretched under the action of the brake wheel cylinder, and the brake shoes are supported to rub against the inner wall of the brake drum to slow down or stop.
SCPET-04 brake disc eddy current flaw detector uses a four-channel eddy current detector and two probes are scanned simultaneously. The whole system consists of four parts: testing device, testing accessories, mechanical and electrical. Using impedance plane analysis, multi-amplitude phase area alarms and other technologies to achieve automatic detection of defeats and output automatic signals, alarms and marking signals.
0～99dB，step size 0.1dB
0-360 °step 1 °
Length5.0mm x width 0.01mm x depth 0.2mm
Computer full digital parameter adjustment
Synchronized alarm output controlled the internal and external clock
High precision end and an end to tail signal removal
High precision real-time and delayed alarm output
Fast digital ／analog electronic balance
Memory track delay blanking function
Real-time impedance plane function
The instrument can be matched to any probe
The remote automatic control system
Chinese and English man-machine interface
Non-equal amplitude phase／amplitude alarm domain
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