Temperature Sensing Part : Bimetal Spiral
Wuhu Boton Automobile Parts Factory is a professional manufacturer with Boton brand and self-developement capacity. Our core competencies is thermostatic bimetal components, thermometer, jumping disc toys, heating chamber for engine carburetors, auto generator regulars,various auto glass lifter motor protector.
Bimetal Spring consists of two or more metallic strips with different thermal expansion bonded together. When heated up, it bends in a pre-determined manner and can be used to monitor, measure and regulate temperature.
Coiling of the thermostatic bimetal achieves greater “active length” within a small space, thus maximizing the possible displacement.
One end of the spiral /helical coil is permanently fixed .the loose end describes a rotary path in response to a change in temperature.
The choice between a spiral or a helical coil depends on the intended application.
Spirals are preferred for measuring ambient temperatures (room temperature, sauna thermometer).
Thermostatic bimetals have been standardized in a number of countries.
The relevant standards usually contain data on materials, their properties, dimensions, shapes
and tolerances, as well as test specification and, in some cases, references to other general test standards. Major standards are below:
Germany:
DIN1715 part 1 ,
thermostat metals ; Technical delivery conditions.
DIN1715 part 12,
thermostat metals ; Testing the specific thermal curvature.
SEW 385
Eisenlegierungen mit besonderer wärmeausdehnung
USA:
ASTM B 388
Standard specification for Thermostat Metal Sheet and Strip.
ASTM B 753
Standard specification for Thermostat Component Alloys.
ASTM B 106
Test Method for Flexivity of Thermostat Metals.
Japan:
JIS C 2530
Thermostat Metals for electric apparatus .
Russia:
GOST 10533
Cold-rolled thermostatic bimetallic strip. Specifications
GOST 10994
Precision alloys. Grades
China
GB/T 4461
Thermostatic bimetal strips
1. Confirming the product technical parameter and other details
2. Samples making, safety test and performance test
3. Client approve the sample and place order
4. Client makes the payment
5. Goods production, safety test and performance test
6. Arranging the shipment
7. Supplier arrange necessary documents and send copy of these documents
8. Tracing the goods until the client has received the goods
9. After-sale quality track
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