Aluminum silicate needle punched blanket ceramic fiber thermal insulation blanket thermal insulation blanket refractory blanket

  Aluminum silicate fiber blanket can be divided into different types, and the use is also selected according to the different needs of different production processes
However, all the choices are inseparable from its own outstanding thermal insulation characteristics
It can not deteriorate or deform even in the environment of thousands of degrees Celsius, and the products produced are generally of uniform specifications, so the use process is also very convenient, and it also has a good effect on sound absorption and noise prevention
Firstly, we look at the influencing factors of high temperature creep of ceramic fiber refractories
  There are many factors affecting the high temperature creep of refractories, and many factors are interrelated
The main factors affecting the creep deformation of refractories are as follows: Generally speaking, under the condition of basically determined phase composition, the products with high bulk density, high compressive strength and low porosity have better creep resistance; With the increase of temperature, time and stress, the creep deformation of the material will increase

 
 
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Aluminum silicate needled blanket is a kind of thermal insulation refractory material made of aluminum silicate as raw material and made of special aluminum silicate long fiber needled by electro cathode furnace process

Aluminum silicate needled blanket is made of high-quality pyrogem melted at a high temperature of more than 2000 degrees Celsius and solidified with other additives
It has many special properties, such as good extensibility, strong earthquake resistance, light weight, good heat insulation, strong stability and no deformation at a high temperature of thousands of degrees
Therefore, aluminum silicate needled blanket is often used in chemical industry, construction industry, electronic industry, aerospace industry, military industry Air conditioning, refrigeration and other fields

 
 
Aluminum silicate fiber blanket is called ceramic fiber blanket because one of its main components is alumina, which is the main component of porcelain

 
Aluminum silicate fiber blanket is made of special aluminum silicate fiber filament through special double-sided needling process
After double-sided needling process, the interweaving degree, delamination resistance, tensile strength and surface flatness of the fiber are greatly improved

 
Ceramic fiber series refractories are mostly engineering materials used at high temperatures above 1000 degrees
Their creep resistance plays a leading role in the high-temperature structural strength of kilns
Therefore, the research on low creep refractories has attracted more and more attention

 
 
 
Specific description of aluminum silicate needle punched blanket:
  When aluminum silicate products are used for the first time, when the component temperature exceeds 200 ℃, aluminum silicate products will appear light smoke
This is the volatilization of aluminum silicate binder
Aluminum silicate products will turn brown in a short time
After 1-3 days of operation, aluminum silicate will naturally return to its original white, and will not have any impact on the product quality

 
External action conditions, including temperature, load, time, atmosphere (oxidizing or reducing), material of material, including its chemical composition, mineral composition (single-phase or multiphase), microstructure
Chemical properties of refractories - Mineral composition and microstructure determine the creep resistance of materials

 
The weight of ceramic fiber products is one sixth of that of light refractory bricks with the same volume
A furnace built of ceramic fiber products is 90% - 95% lighter than that of non insulated furnace
The weight is directly proportional to the heat storage of the furnace
Due to the weight reduction, the heat capacity of the furnace is small and the heat storage is reduced
Therefore, refractory ceramic fiber is especially suitable for intermittent operation furnaces, such as some heat treatment furnaces

 
It does not contain any organic binder to ensure that the aluminum silicate fiber blanket has good manufacturability and stability under high and low temperature conditions

 

classification temperature		1050	1260			1400
Product Code		JSGW-112	JSGW-212	JSGW-312		JSGW-422	JSGW-512
Change (%)		950℃× 24h≤- three	1000℃× 24h≤- three	1100℃× 24h≤- three		1200℃× 24h≤- three	1350℃× 24h≤- three
theoretical thermal conductivity （W/m k） （128kg/ m³）	(average 200 ℃)	0 045-0 060				0 052-0 070
	(average 400 ℃)	0 085-0 110				0 095-0 120
	(average 600 ℃)	0 152-0 20				0 164-0 210
theoretical bulk density (kg / M & sup3;)		64/96/128				128	96/128
Product specification (mm)		3600/7200/14400× 610/1220× 10/20/25/30/40/50
tensile strength (thickness 25mm) MPa		≥ zero point zero four
AL2O3(%)		≥ forty-four	≥ forty-five		≥ forty-five	52～55	38～40
Zr2(%)							15～17
AL2O3+ SiO2(%)		≥ ninety-six	≥ ninety-seven		≥ ninety-nine	≥ ninety-nine	-
AL2O3+ SiO2+ Zr2 (%)		-	-		-	-	≥ ninety-nine
Fe2O3(%)		≤ one point two	≤ one		≤ zero point two	≤ zero point two	≤ zero point two
K2O +Na2O (%)		≤ zero point five	≤ zero point five		≤ zero point two	≤ zero point two	≤ zero point two
packaging form		inner plastic bag and outer woven bag