Do you really know about ceramic band heaters?

Ceramic band heaters are not made of ordinary mica wire, but of ceramic wire, so the power of the product is 0.5 to 1.5 times higher than that of ordinary products. The heating body is made of imported round silk pottery, which is flexed into a spring and inserted into the ceramic strip. The outer cover is made of stainless steel made in Japan, and the insulation cotton (aluminum silicate fiberboard) is used in the middle to prevent temperature leakage. Ceramic heating ring ceramic strip is a high-frequency ceramic with fast heat transfer, hard and not fragile, high temperature deformation is not easy to aging characteristics.

Ceramic band heaters：

1. Fast heat transfer, uniform heating and stable operation.
2. Ceramic band heaters temperature does not leak, can save electricity, the cover touch hands not hot, work safety.
3. The power of the product is high. The power of the ceramic bar through wire is 0.5~1.5 times higher than that of the ordinary one.
4. European and American high-temperature heating wire, with fast heat dissipation, uniform heating, high temperature stability and other characteristics, can be used for a long time at 600-800 C.
5. The product life is long, because raw materials aging at high temperature is slower, so the product has a long life.
6. In line with the national GB technical requirements. The power deviation is +5% - 10%.
7. Electrical strength: voltage 1500v/50Hz sine alternating voltage test, 1MIN no breakdown phenomenon.

The first condition of Ceramic band heaters forming is the interaction between powder and water hardening, and then the reinforcement of the binder part. A certain time of static has an important impact on the final forming effect. When the mold has a preliminary hardness, according to different types of additional measures to further strengthen the force, such as through heating, vacuum drying, ultraviolet light irradiation and so on. After this process is completed, the mold has a strong hardness, which requires the removal of other powder from the surface and the brush to sweep away most of the surrounding powder. The remaining less powder can be removed by mechanical vibration, microwave vibration, wind blowing in different directions. It has also been reported that molds are immersed in special solvents which can dissolve dispersed powders, but can not dissolve solidified molds to remove excess powders.

For moulds finished with powder, especially for moulds made of gypsum base, Tao Ciji and other absorbent materials. Also need to consider its long-term preservation problem, the common method is to brush a layer of waterproof curing adhesive outside the mold, increase its strength, to prevent weakening due to water absorption. Or the mold can be immersed in a protective polymer, such as epoxy resin, cyanoacrylate, molten paraffin, the final mold can be waterproof, strong, beautiful, not easy to deform and so on.

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what is a ptc heater ?

Many customers don't know what PTC heater is or how PTC heater works, so today we'll give you a brief introduction to PTC heater.

PTC heater is also known as PTC thermistor ceramics, it is a kind of semiconductor functional ceramics with positive temperature coefficient. PTC resistance decreases with the increase of temperature before the transition temperature. The resistance increases significantly with the increase of temperature from the transition temperature to the thermal runaway temperature.

PTC heater has many advantages, such as constant temperature heating, long natural life, energy saving, no open fire, good safety performance, easy regulation of heat and less affected by power supply voltage. Domain.

The PTC heater can be made into various shapes and specifications according to the requirements.

Scope of application:

Heating fan, air conditioning heating, dryer, mosquito killer, motorcycle carburetor, automotive damper door, automotive cold start preheating, electric humidifier, electrical instrument moisture-proof heating plate (plate), massager, thermotherapy device, melt gun, curling hair, hair straightener heating, coffee heater, milk heater, boiling water heater, water heater, steam Beauty, etc.

Production process of PTC heater：

PTC heater refers to the automatic temperature control PTC ceramic heating body, is a special ceramic material. The principle of constant temperature heating of PTC heater is: when PTC heater is energized, because the resistance at room temperature is small, the initial current is large, which can make PTC heater heating up quickly, and lead to the resistance value rapidly increasing into the transition zone. At this time, the current through PTC heater is very small, so that the surface temperature of PTC heater remains constant. The temperature is only related to Curie temperature and applied voltage of PTC heater, but has nothing to do with ambient temperature. The production process of PTC heater is as follows:

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All kinds of PTC thermistors

PTC thermistors for degaussing circuits. Characterized by no contact, no noise, long life. The product is used in the demagnetizing circuit of color CRT. It can effectively demagnetize the magnetized CRT shading board due to the influence of magnetic field and improve the color barrier. Models are: MZ71, MZ72, MZ73, MZ1, MZ2, MZ3, etc.

SMD SMT PTC thermistor. This resistor is flat sheet, suitable for mass production of PCB chip packaging, higher efficiency, low defect rate.

High polymer PTC thermistor. This kind of PTC is often found in PPTC self-recovery fuse, which has the function of over-current and over-heat protection, and can be restored. Under normal conditions, the low resistance state, once the phenomenon of overcurrent occurs, the PPTC thermistor self-heating to increase its impedance to suppress the current to a small enough to protect the secondary circuit.

The PTC heater has the characteristics of constant temperature, temperature regulation and automatic temperature control. It is also safe, reliable and has a long life. When the PTC heater is heated, the resistivity is very low below the Curie point temperature; once the temperature exceeds the Curie point, the resistivity increases sharply, so that the current drops to a stable value, so as to achieve automatic control of temperature, constant temperature and other purposes. Widely used in tea disinfection cabinet, coffee machine, chocolate machine, electric mosquito repellent, thermostat, physiotherapy, heater and other electrical appliances.

PTC thermistors are started by motors and motors. This kind of resistance is usually found in disc structure of optical sheet. It is more suitable for clamping contact mode and more suitable for single-phase induction motor. The PTC motor starter is one of the most important components for motor startup.

Power type PTC thermistor. Usually PTC thermistors are connected in series in the power supply circuit. Normally, the current flowing through the PTC is less than the rated current, and the resistance value is very small. When the circuit current greatly exceeds the rated current, the PTC suddenly heats, the resistance value suddenly increases to the high resistance state, thus limiting or blocking the current, and protecting the back circuit from damage.