Special Sized Mica Parts Used as Lining Plate in High Temperature Industry

Special Sized Mica Parts Used as Lining Plate in High Temperature Industry

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Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 100 pc

Supply Capability:: 10000 pc/month

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1. Introduction:

Mica is a rigid substrate able to withstand very high temperatures and are suited for applications up to 500°F (260°C). Mica heating elements offer several distinct advantages over other flexible heater technologies, including extremely low leakage, lower material costs, and higher operating temperatures. Our mica heating element is made by detail order requirments.

2. Main features of Mica Parts:

Mica heating elements offer several distinct advantages over other flexible heater technologies, including extremely low leakage, lower material costs, and higher operating temperatures. Our mica heating element is made by detail order requirments.

3. Applications:

Typical applications of mica heating elements are air heaters, enclosure systems, food service equipment, process and packaging equipment.

4. Technical Parameters:

MICA SHEET -----Technical data
ITEM		UNIT	RM	RP	RM-T	RP-T	FM	FP
Hardness			Rigid	Rigid	Rigid	Rigid	Flexible	Flexible
Mica paper			Muscovite	Phlogopite	Muscovite	Phlogopite	Muscovite	Phlogopite
Thickness		mm	0.1-2.0	0.1-2.0	3.0-50	3.0-50	0.1-2.0	0.1-2.0
Mica content		%	≥90	≥90	>88	>88	≥90	≥90
Bond Content		%	<10< span="">	<10< span="">	<12< span="">	<12< span="">	<10< span="">	<10< span="">
Density		g/m 3	1.6~2.45	1.6~2.45	2.1~2.4	2.1~2.4	1.6~2.45	1.6~2.45
Heat Resistant	Continuous	℃	500	700	500	700	500	700
Heat Resistant	Peak	℃	700	900	700	900	700	900
Heat loss at 500℃		%	<1< span="">	<1< span="">	<1< span="">	<2< span="">	<1< span="">	<1< span="">
Heat loss at 700℃		%	<2< span="">	<2< span="">	<1< span="">	<2< span="">	<2< span="">	<2< span="">
Flexural strength		Mpa	>160	>140	—	—	<1< span="">	<1< span="">
Water absorption 24h/23°C		%	<1< span="">	<1< span="">	<1< span="">	<2< span="">	—	—
Dielectric strength		KV/mm	>20	>20	>15	>15	>15	>15
Volume Resistivity	23℃	ΩNaN	>10¹⁷	>10¹⁷	>10¹⁷	>10¹⁷	—	—
Volume Resistivity	500℃	ΩNaN	>10¹²	>10¹²	>10¹²	>10¹²	—	—
Smoking Test		s	<4< span="">	<4< span="">	—	—	—	—

FAQ

We have organized several common questions for our clients,may help you sincerely：

--------What is the use of mica parts?

Mica laminate and washers made of our own high quality mica plates are used for home appliances, electro-magnets, micro-sensitive control gear etc

---------Which type of mica parts we can produce?

1. Rigid mica parts or Flexible mica parts

2. Muscovite mica parts or phlogopite mica parts

3. Thin mica parts or thick mica parts

4. All the special sized mica parts need drawing.

----------what advantages of mica parts?

1. Good high voltage insulation materials

2. Do not easily break up

3. Easily produce special size

Q: There are a lot of online about this, but still do not understand. If the insulation resistance is high enough, hit the pressure should also be qualified ah. There is insulation test itself when the current flow is not large, because the rock table resistance is great. But hit the pressure, I do not know is not a direct high pressure drop in the test product above, there is no great resistance to interference?: Insulation test Because the test voltage is low, it is not easy to damage the equipment under test. The voltage test is easy to damage the equipment under pressure when the test voltage is high. In some cases, although the withstand voltage test is passed, Causing damage, the test staff will have to use low-voltage insulation test, test the pressure test after the test equipment insulation. Under normal circumstances, insulation resistance qualified, withstand voltage test will be adopted.

Q: Brass is not an insulating material?: Brass is a particularly good conductive material and is a good material for wearing heat

Q: What kind of insulation is the insulating: Insulation is the core technology of aluminum substrate. Currently on the market most of the aluminum substrate insulation layer using epoxy resin, the advantages of this type of insulation is: good adhesion; drawback is: thermal resistance, dielectric strength is limited, it is difficult to meet the safety requirements. Such aluminum substrates are only suitable for low power density applications. High-end aluminum substrate insulation layer is generally composed of high thermal conductivity and high insulation ceramic powder filled with special polymer composition.

Q: Insulation material and the definition of the role of the best professional insulation materials website for my reference: According to the national standard GB2900.5 provides the definition of insulating material is: "used to make the device in the electrical insulation of the material." That is, to prevent the current through the material.

Q: What insulating materials are used for transformers: Dry type transformers before the 1960s are mainly B-type insulation of the open-type dry-type transformers, product model for the SG type. When there is no foil coil, the low pressure for the majority of multi-root and around the layer or spiral coil, high pressure for the pie coil. Wire for the double glass envelope or single glass fiber package enamel enameled wire. The rest of the insulating material is mostly phenolic glass fiber materials. The impregnation process for the room temperature, atmospheric pressure with B-class insulation impregnated paint were high and low pressure coil impregnation and drying at the temperature (drying temperature does not exceed 130 ℃). Although this dry-type transformers than oil-immersed transformers in the fire performance has made great progress, but its moisture, anti-pollution performance is worrying. Is no longer produced. Nevertheless, its successful electrical, magnetic, thermal calculations and structural design have laid a good foundation for the new H-class insulated open-ended transformers that have evolved later.

Q: What insulating materials are used for high frequency transformers?: Silicon steel lacquered lacquer can be divided into surface enamel and varnish, drying and drying and self-drying. High-frequency transformer insulation paint choice should have good dielectric properties, a higher insulation resistance and electrical strength; and electrical appliances use the environment to match the heat resistance; good mechanical properties and wear resistance; good thermal conductivity Sexual and moisture-proof performance; economical, reliable, wide range and so on.

Q: What is the main purpose of insulating materials?: As the insulating material has a certain degree of insulation strength, a variety of electrical equipment, all kinds of safety equipment (electrical pliers, test pen, insulated gloves, insulation rods, etc.), a variety of electrical materials, factories are required to allow a certain voltage, For the rated voltage. The voltage to be used shall not exceed its rated voltage value in order to avoid accidents.

Q: What is the DMD insulation material?: DMD (Dacron / Mylar / Dacron) full name polyester film polyester fiber non-woven soft composite foil, is a two-layer polyester non-woven fabric in the middle of a layer of insulated polyester film composite made of three insulation materials.

Q: Wear-resistant, high temperature, insulation materials which: Alumina - high temperature, corrosion resistance, wear resistance. Good electrical insulation 1600 ℃. For crucible, high temperature thermocouple casing, knives, mold and so on. Silicon nitride - has good high temperature strength, thermal expansion coefficient is small, high thermal conductivity, thermal shock resistance, the use of temperature as alumina, good electrical insulation. 1200 ℃ still have a high hardness. For mechanical seal ring, thermocouple casing, steam turbine blades and so on. Silicon carbide - high temperature strength, 1400 ℃ when the bending strength of (500 ~ 600) MPa. For the nozzle, furnace tubes, high temperature bearings, high temperature heat exchangers and so on.

Q: What is the thermal aging and electrical aging of insulating materials?: Electrical aging more common in high-voltage electrical appliances, the main mechanism is the occurrence of partial discharge of insulating material under high pressure, resulting in strong oxidant ozone. Ozone is easy to cause ozone cracking of the material. Partial discharge will produce nitrogen oxides, which combine with the moisture to produce nitric acid, corrosion of insulating materials; partial discharge of high-speed charged particles bombardment of insulating material molecules, will promote its ionization, fission and damage; in addition to local discharge will make dielectric loss Increased, local heat of the material, resulting in heat aging.

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