1.Descritpion of Industrial insulating electrothermal Cordierite Ceramic ferrule for stud welding Cordierite ceramic is one of the most popular ceramics for its properties of excellent thermal stability, high refractoriness, good chemical durability, low dielectric constant, and low thermal expansion. Cordierite ceramic is extensively used in important industrial applications such as micro electronics, refractory products, heat exchanger for gas turbines, thermal shock-resistant table ware, catalyst supports, and porous ceramics. Low-expansion cordierite is suitable for being applied at high temperature circumstance where a good thermal shock resistance is required.This unique property of cordierite is caused by the negative lattice expansion in c-axis direction,which provides excellent resistance to thermal shock as well as low thermal conductivity.
2.Features & Advantages of Industrial insulating electrothermal Cordierite Ceramic ferrule for stud welding
1). Strong heating ability and high efficiency 2). High density 3). Fine surface 4). Good thermal conductivity 5). Good heat-shock resisting ability
3.Application of Industrial insulating electrothermal Cordierite Ceramic ferrule for stud welding
1)Electric appliance industry 2) Automotive industry 3) Mechanical industry 4) Engineer industry 5) Other application with high requirement of no staining 6) Other application use in liquid and gas
4.Specification of Industrial insulating electrothermal Cordierite Ceramic ferrule for stud welding
Item
Test Condition
Unit&Symbol
Cordierite ceramics
The main chemical ingredient
MgO, Al2O3,SiO2
Bulk Density
gm/cc
2.5
Maximum Use Temperature
1000ºC
Water absorption
%
0
Hardness
HV
800
Bending Strength
20ºC
Kgf/cm2
900
Compressive Strength
20ºC
Kgf/cm2
3500
Fracture Toughness
K(I c)
Mpa m1/2
-
Thermal expansion
1X 10-6/ºC
≤2.0
Thermal conductivity
25ºC-30ºC
W/m.k
1.3
Thermal Shock Resistance
Tc
ºC
250
Dielectricity constant
1MHz.25ºC
6
Dielectric strength
ac-kV/mm (ac V/mil)
10
Volume Resistivity
20ºC
ohm-cm
> 1012
Hangzhou Dingmingshang Industry Co., Ltd., is located in Xiaoshan Economic and Technology Zone in Hangzhou City, China. The traffic is very convenient here. The investment of our factory is USD2, 500, 000. We have become a member of the following organizations: China Building Metallic Construction Association, China Mechanical general parts industry Association and China Fasteners Standardization Technique Committee.
We can produce hexagon nuts, bolts with large hexagon head, plain washers, and cheese head studs for stud welding. And we can also produce high strength bolts with large hexagon heads, high strength large hexagon nuts and high strength plain washers all for steel structures. The products can be produced by DIN, ISO, ASTM, ANSI, JIS, NF, and other standards. The strength grade can reach 4.8s-10.9s, and the steel structure can reach 8.8s -10.9s. Our products are widely used in the areas of steel structure, bridge, railway, regular boat, car industry, electric power and nucleus engineering items, etc.
