FEATURES

? No noise

? High efficiency

? Saves energy

? Long service life

? Corrosion resistance

? High temperature resistance

? Cold and heat shock resistance

APPLICATIONS

Widely used in daily life, industrial and agricultural

technology, communication, environmental protection,

industrial drying equipment, water, oil, acid and alkali liquid

heaters such as: hair dryer, electronic cigarette,

aromatherapy stove, air conditioner, instant water heater,

automobile exhaust oxidation sensor, ultrasonic heating

element and other rapid heating devices, multi-function

microwave oven, kettle, coffee maker, infrared

physiotherapy, intravenous fluid heater, etc.

DESCRIPTION

MCH is acronym for Metal Ceramic Heater, which is made

up of high melting point metal heating resistance slurry such

as tungsten or molybdenum-manganese printed onto 96

alumina casting ceramic green body according to the design

requirements of the heating circuit. After being laminated by

heat pressing, ceramic heaters are then formed by co-firing

ceramic substrate and metal circuit in hydrogen reduction

atmosphere protection furnace at 1650° C.

It can also be called MCH heater, MCH ceramic heating

element, alumina metallic ceramic heating element, HTCC

ceramic heating element, ceramic heater, etc.

MCH ceramic heater features no noise during operation and

radiates infrared light that is beneficial to the human body. It is

mainly used to replace the most widely used alloy wire and

PTC heating elements and components. Compared with the

former two, this heater features corrosion resistance, high

temperature resistance, cold and heat shock resistance, long life,

high efficiency, energy saving, uniform heating, high thermal

conductivity, free of lead, cadmium, mercury, hexavalent

chromium, polybrominated biphenyl, polybrominated diphenyl

ether, etc. It is in compliance with RoHS and other

environmental requirements. Specific performances can be

found as follows:

Energy saving and high thermal efficiency. The unit heat

consumption is 20~30 less than PTC. Rapid heating without

open flame, it takes only 10 seconds to heat up to rated

100°C~230°C; and 30 seconds to 500°C~700°C. It features

uniform heating and PTC characteristics TCR: 3300ppm/°C,

power density ≥ 50W/cm2.

Safe surface without charge and good insulation. It can pass

4500V/1s withstand voltage test without breakdown. Leakage

current <0.5mA, water insulation resistance DC in 750V

voltage >200MΩ.

No impact peak current; no power attenuation; less impact on

the circuit board. Improve the service life of the circuit board

and the whole machine. The ceramic heater circuit is isolated

from the air. It is resistant to acid, alkali and other corrosive

substances, thus featuring a long service life.

Resistance-temperature change is linear. Temperature can be

easily controlled by resistance or voltage, and no temperature

control is required below 500 °C.

Raw materials and production processes:

Main raw materials: 96 alumina ceramic green body,

tungsten, molybdenum slurry, and nickel slurry.

Production process:

Printing circuit on the surface of ceramic green body——heat

pressing——high temperature sintering in hydrogen furnace at

1650°C for 21 hours——smoothing at 800°C for 8 hours——

electrode nickel plating——withstand voltage test and

insulation resistance test in water——dry burn aging and

power performance test (full inspection)——water cycle test—

—assembling flange——welding electronic wire (including

temperature fuses and terminals)——withstand voltage and

power performance test for finished products——visual

inspection