overview
Thermal bimetal strip is by the different expansion coefficient of
two or more than two layers of metal or metal solid combination,
and along the entire interface varies with temperature and the
thermal function of shape changes in composite materials.One of
high expansion coefficient become active layer, low expansion
coefficient becomes passive.When requirements with high
resistivity, but heat sensitive resistance performance is
essentially the same type of thermal bimetal series, can be added
between the two layers of different thickness of middle layer as a
shunt layer, is to achieve the purpose of control different
resistivity.
The basic characteristic of the thermal bimetal is changing with
temperature and temperature deformation, resulting in a certain
moment.Many devices use this feature to convert heat energy into
mechanical work to achieve automatic control.Thermal bimetal used
for control system and temperature sensor in the measuring
instrument.
Main features: high heat sensitive properties and high resistivity,
but lower elastic modulus and allowed stress, can increase the
sensitivity of the instrument, smaller size and increase the
reaction
| shop sign | G·Raum |
| With brand | |
Composite layer
alloybrand | High expansion layer | Mn75Ni15Cu10(Mn72Ni10Cu18) |
| middle layer | -------- |
| Low expansion layer | Ni36 |
Chemical composition
| shop sign | Ni | Cr | Fe | Co | Cu | Zn | Mn | Si | C | S | P |
| ≤ |
| Ni36 | 35.0~37.0 | - | allowance | - | - | - | ≤0.6 | ≤0.3 | 0.05 | 0.02 | 0.02 |
| Mn72Ni10Cu18 | 8.0~11.0 | - | ≤0.8 | - | 17.0~19.0 | - | allowance | ≤0.5 | 0.05 | 0.03 | 0.02 |
| Mn75Ni15Cu10 | 14.0~16.0 | - | ≤0.8 | - | 9.0~11.0 | - | allowance | ≤0.5 | 0.05 | 0.02 | 0.03 |
performance
| Than bending K(20~135ºC) | Temperature curvature
F/(greenhouse ~ 130 ºC) | resistivity | Linear temperature
/ ºC | Allows the use of temperature / ºC | Density (g/cm after) |
| Nominal value | Allowable deviation | Standard values | Allowable deviation |
| Level 1 | Level 2 |
| 20.8 | ±5% | ±7% | 39.0%±5% | 1.13 | ±5% | -20~150 | -70~200 | 7.7 |
Modulus of elasticity
E/GPa | Hardness (HV) | Tensile strength
MPa | Allow stress MPa |
| High expansion layer | Low expansion layer | minimum | biggest |
| 113~142 | 190~240 | 200~255 | 736~834 | 147 | 294 |
production process
Cold rolled →go oil → pickling → annealing cold-rolled →oil →
pickling → annealing cold-rolled → conform to the requirements of
the use of thermal bimetal strip
Company profile
Shanghai tankii alloy material co., LTD is a company specializing
in the production of nickel chromium alloy, copper, nickel alloy,
iron chromium alloy, nickel alloy, thermocouple wire, pure nickel,
and other precision alloy round wire, flat wire, wire rod, flat,
wide and thin of large enterprises.Our factory has advanced
production equipment, from smelting, hot rolling, cold rolling,
drawing, heat treatment to the product factory is a set of strict
production process control, at present the factory production of
day brand nickel chrome belt, nichrome wire, iron chromium aluminum
wire, iron chromium aluminum, resistance, copper nickel wire,
copper, nickel, manganese, copper, manganese, copper wire, thermal
spraying nickel aluminum wire, pure nickel wire, pure nickel belt,
thermocouple wire of electric heating products have been exported
to international markets.Shanghai day alloy material co., LTD has
passed quality system certification and environmental protection
system certification.The company in line with the tenet of "honest,
quality first" in pursuit of scientific and technological
innovation, create the first brand alloys as the business
philosophy to the quality strives for the survival, to the survival
and development.Professional and sincere hospitality is our
aim.Warmly welcome people at home and abroad and the general new
old customers to come to ask price inquiry, ask for samples,
negotiate the business, technology, enhance friendship and create
brilliant.
