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PRODUCTS    NICKEL & NICKEL ALLOYS    Thermostat bimetal strip

Thermostat bimetal strip

Thermostat bimetal strip
A kind of precision alloy formed by two layers (or layers) of metals or alloys having different coefficients of thermal expansion as a component layer.
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  • Thermostat bimetal strip

    晋级030image003image002

    A kind of precision alloy formed by two layers (or layers) of metals or alloys having different coefficients of thermal expansion as a component layer. A set of elementary layers in the thermal bimetal has a low coefficient of thermal expansion and is a passive layer; the other component layer has a high coefficient of thermal expansion and is an active layer. Sometimes, in order to obtain a special thermal bimetal, a third or fourth layer of metal or alloy may be added. Generally, the passive layer is made of Invar type alloy containing 34 to 50% of Ni; the active layer is made of brass, nickel, Fe-Ni-Cr, Fe-Ni-Mn and Mn-Ni-Cu alloy. Different types of thermal bimetals can be obtained by different combinations of active layer and passive layer materials, such as high temperature type, medium temperature type, low temperature type, high sensitivity type, corrosion resistant type, resistance type and quick action type.

    Type

    Alloy grade of the combination layer

    Characters of bimetallic strip

    High expansion layer

    Intermediate layer

    Low expansion layer

    5J20110

    Mn75Nil5Cul0
    (Mn72Nil0Cul8)

     

    Ni36

    High sensitivity, High resistance, Suitable for medium temperature

    5J1480

    Ni22Cr3

     

    Ni36

    Medium sensitivity, Medium resistance, Suitable for medium temperature

    5J1580

    Ni20Mn6

     

    Ni36

    Medium sensitivity, Medium resistance, Suitable for medium temperature

    5J1070

    Nil9Cr11

     

    Ni42

    Medium sensitivity, Suitable for higher temperature

    5J1306A

    Ni20Mn6

    Cu

    Ni36

    Resistance series

    5J1306B

    Ni22Cr3

    Cu

    Ni36

    Resistance series

    5J1309A

    Ni20Mn6

    Cu

    Ni36

    Resistance series

    5J1309B

    Ni22Cr3

    Cu

    Ni36

    Resistance series

    5J141lA

    Ni20Mn6

    Cu

    Ni36

    Resistance series

    5J1411B

    Ni22Cr3

    Cu

    Ni36

    Resistance series

    5J1417A

    Ni20Mn6

    Cu

    Ni36

    Resistance series

    5J1417B

    Ni22Cr3

    Cu

    Ni36

    Resistance series

    5J1320A

    Ni20Mn6

    Ni

    Ni36

    Resistance series

    5J1320B

    Ni22Cr3

    Ni

    Ni36

    Resistance series

    5J1325A

    Ni20Mn6

    M

    Ni36

    Resistance series

    5J1325B

    Ni22Cr3

    Ni

    Ni36

    Resistance series

    5J1430A

    Ni20Mn6

    Ni

    Ni36

    Resistance series

    5J1430B

    Ni22Cr3

    Ni

    Nj36

    Resistance series

    5J1433A

    Ni20Mn6

    Ni

    Ni36

    Resistance series

    5J1433B

    Ni22Cr3

    Ni

    Ni36

    Resistance series

    5J1435A

    Ni20Mn6

    Ni

    Ni36

    Resistance series

    5J1435B

    Ni22Cr3

    Ni

    Ni36

    Resistance series

    5J1440A

    Ni20Mn6

    Ni

    Ni36

    Resistance series

    5J1455A

    Ni20Mn6

    Ni

    Ni36

    Resistance series

               

     

    PS:Strip thickness range:0.08~1.5mm; Strip width range:1.5~115mm。

    ◇Strip size Tolerance range:

    Thickness mm

    Width mm

    Size

    Tolerance range

    Size

    Tolerance range

    0.08-0.25

    ±0.01

    1.5-12

    ±0.05

    0.25-0.50

    ±0.01

    12-25

    ±0.05

    0.50-0.75

    ±0.015

    25-75

    ±0.15

    0.75-1.50

    ±0.020

    75-100

    ±0.20

     

    ◇Thermal bimetallic elements stabilized heat treatment system:

    Type

    Temperature

    Heat treatment

    Cooling method

    Holding time h

    5J20110

    260280

    12

    Air cooling

    5J1480

    300320

    5J1580

    300320

    5J1070

    380400

    5J1306

    250270

    5J1411

    250270

    5J1417

    250270

    5J1325

    300320

    5J1435

    300320

    5J1440

    300320

     

    Application:

    Bimetallic strip: Bimetal is a composite material that is firmly bonded by two or more layers of alloys having different coefficients of linear expansion. An alloy layer with a large expansion coefficient is called an active layer, and an alloy layer with a small expansion coefficient is called a passive layer. An intermediate layer that acts as a regulating resistor can be added between the active layer and the passive layer. When the ambient temperature changes, the active layer Different from the expansion coefficient of the passive layer, bending or rotation occurs. This alloy is used in automatic control devices such as temperature control, temperature compensation, current limiting, temperature indication, and thermal sensors in instrumentation. It can also be applied to circuit breakers, switches, thermal relays, various temperature control components, home appliance protectors, electronic protectors, overload protectors, condensation traps, temperature regulators, thermometers, incubators, meteorological instruments, electric irons, Rice cooker, refrigerator, fire alarm, fluorescent starter, oven, lighter, current type automatic control switch, automatic safety protection switch strips, etc. It is also used for heat-sensitive components in medium and low voltage electrical appliances such as fluid (gas. liquid) valve switches.

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