Many household electrical
appliances will have alternating magnetic field, when you take a steel metal
objects close to the alternating magnetic field of the electric equipment, can
feel vibrations. Obtain an attenuation of alternating magnetic field is also
very simple, with ceramic watches near at first, and then slowly move the line.
This is an old way, when do this you need to be careful, this method can
generally demagnetization, but not very clean. More professional way is use
large hollow coil, forming a large capacitance discharge, to attenuate the
alternating magnetic field.
Ceramic watches has certain anti magnetic effect,
the same as the antimagnetic ceramic watches, as long as access to some of the
strong magnetic field equipment, such as generators, motors, radio, etc., will
make ceramic watches magnetization. Watch after this, is not only lost its
accuracy, even the lockout. At this time, if we want to restore, and then go to
professional ceramic watches pits, using professional tools to solve. If not
convenient, also can find an iron circle which is not magnetized, taking the ceramic
watches through the circle slowly
Ceramic watches pointer pauses and retrograde. Ceramicwatches increases the friction between the dial needle and parts wheel,
namely when turning the grip, the pointer will be reversed. There is friction
between points round and round with too loose, table machine move but failed to
drive the pointer and make the ceramic watches stopped. These are called the
second round of the company's fault and three rounds of outgoing type of
failure.
Ceramic watches second round type is in the
structure of the wheel to drive the clock, and its working principle is similar
with the friction structure principle of the first round of outgoing type. Because
it increases the friction between the dial needle and parts wheel,, so with
other transmission form of dial, dial needle habits are opposite, on the other
hand, namely turning the grip, pointer would reversed. Ceramic watches three
rounds of outgoing type is centrifugal wheeled tricycle type. Three gears shaft
and at the same time two round mesh points and friction wheel. With round
spring implement the friction points and points between wheel friction wheel transmissions.
When the dial needle, ceramic watch points wheel and friction wheel can work
skid without affecting the transmission mechanism. Dial needle, because of the
influence of the gear side clearance, sometimes the minute hand there will be a
slight stagnation. Center section tube of the bearings are used in section of
pipe end table with small diameter drill in order to improve the second axis of
the structure of positioning accuracy, so can reduce wear and tear to improve
transmission efficiency. In some three rounds of outgoing type table, round
piece of spring disc friction points can be elastically and friction wheel
clearance fit, they only drive go needle agencies role, and have no incentive
to transmit the load. Friction wheel and wheel coordinate too loose, is the
reason this kind of ceramic watches get in trouble, the ceramic watches machine
move but failed to drive the pointer is the face of failure.
