Manufacturing Mica Insulated Heating Elements for industry

Product Name: Manufacturing Mica Insulated Heating Elements for industry

Introduction of  Ceramic Bobbin Heater

Ceramic bobbin heater is made of alumina ceramic insulation and series wound nickel chrome heating wire.

It is often used in furnace heating.

Advantage&Features

High electric conversion efficiency, fast heating, thermal inertia, high temperature resistance, corrosion resistance, good thermal stability and chemical properties, long service life, non-polluting, 30% saving

energy.

Material: Cordierite ceramic

Introduction of heater tube 

The product is ued in controllable aural various heat treatment furnace,to avoid the contact of elding burning outcome or to avoid the corrosion of furnace gas to heating element.The process(the conversion of elding burning or electric energy) is put into refractory steel tube and let amount of heat radiate by wall of tube.This device is called as heater tube.

Electrothermal heater tube will close the heating element in the jacket,after electrify and heat up,the heat is indirectly radiated to furnace liner and workpiece to be heated by bushing.The heat up of heater tube is used in furnace with going protecting aural and corrodent aural,such as continuous furnace,roller furnace, pit furnace.

Twist and turn resistance wire in axial direction,that is,the single resistance wire is bended to U shape,then in series or parallel connection mutually.This kind of electrothermal heater tube is called bending resistance wire heater tube.This tube,because fall of screening of resistance wire,in intratubal upper surface load,can insure prolong life span.

Advantages&Features

1. The controllability of aural inside furnace can be guaranteed.

2. The control of temperature,assemble and maintainace are very convenient and can be easy to sealed.

3.The cubage of hearth is enlarged and throughput is improved because of no muffle pot.

4.Strong heating ability and high efficiency.

5.The refractory steel material is save.

Materials

The electrothermal alloy material that heating tube apply should be of higher resistance rate.The percent conversion of galvanothermy is high.Because the heating tube is put in the bushing,the process of heat transmission is different from that of open type heating element.Its heat shield is big.The temperature of element must be controlled at the course of temperature rise,to avoid temperature excursion of element.

When the heater tube is closed and heated,the surface temperature of heating element is higher roughly than temperature of hearth by 100 C~150 C.So temperature of furnace and atmosphere of temperature of furnace are needed to analysed.Choose correct heating material. 

The heater tube produced by gongtao company often apply Cr20Ni80,Cr25A15,Cr21A16Nb,Cr27A17Mo2 ect.

Chemical content of each material is as below

Cr20Ni80 is used between 500 C and 800 C,because of steady,single even solid fusant form,It has good normal temperature and high temperature mechanics property,even electric physical property and good machining technics property.Low use temperature,long life,no easy damage ect are different from Cr27A17Mo2 electrothermal alloy material.

Cr25A15,Cr21A16Nb,Cr27A17Mo2 is used between 800 C~1200C.The use temperature of these three material is hoisting in turn. Plasticity is low.High brittleness is the biggest shortcoming of Cr27A17Mo2.Especially when 400°C-800°C,long use will make material precipitate “CrFe” type metal compound,which arose sharp fall of alloy plasticity. Severe embrittlement phenomenon will appear.So Cr27A17Mo2 electrothermal alloy material carry through formation,process and use,kept away from in this temperature range.

Introduction of  Ceramic heater pad

Ceramic heater pad  also called flexible heater, with high quality nickel chromium alloy wire cable, high purity alumina ceramic coat made crawler or rope type and other products. It can according to the shape, size, can be spliced, bending, twisting clingy heating workpiece.

Features

1.Fast Heat Raising,Max Temperature 1050 Centigrade 

2.High Hot Utilization 

3.Good Heat Insulation 

4.Significant Energy-saving

5.Low Labor Intensity

6.Safe And Reliable To Use

Applications&using fields

Their main applications are pipeline heating, pre-welding heating, post-welding heat treatment, stress relief,, annealing,ect. 
1. Pre-heating: Straight seam weld, longitudinal, circumferential weld, thick steel plate etc.

2. Post-welding heat treatment: tank, boiler or other metal jobs
3. Heating: mold heating, shipboard, zinc bath, large& irregular metal parts
4. Pipeline heating: pipeline oil, pipeline gas, pipeline water, pipeline petrochemical and other pipeline material
The using fields involved are petrochemical, oil and gas pipelines, aerospace, shipbuilding, steel, Hydropower construction ,tanks, boilers, vessels, pressure vessels, cylinders, metal structure, spatial structure, railway bridges, electricity water, mine construction, vehicle manufacturing, nuclear power, mining, plastics processing, energy saving process, screw barrel industries,ect.

Introduction of Ceramic heating elements

Ceramic heating elements are made from long-lasting and high quality materials which are mounted in cylindrical shape shown on picture below. Ceramic elements are made from very hard materials so they're resistant for damages. Ceramic profiles provides homogeneous heating of the whole surface. Medium is heated through the temperature radiation.

Ceramic profile (circle) - single element which is use to bulit complete cylindrical heater. Quantity of those elements depends on lenght (L), diameter (Ø), power and application of the heater. Ceramic elements are connected axially and secured to head.

Lead wires are connected to head by wire clamps or directly.

Distance of unheated zone (Lm), is determined by a customer.

Heating coil - made of high quality resistance heating wire is put in ceramic profiles. Diameter of heating coil strictly depends on heating power, supply voltage and size of heating element.

TECHNICAL DATA

APPLICATIONS
heating of: air, tunels, space; stoves: accumulative, tiled; bakery; confectionery; electroplating plants; rubber and synthetic materials processing;quenching oil baths, drying ovens, degreasing baths.

Frequently asked questions                   

(1). Q: Can you give me a discount price?

A: It is depending on the volume. The larger the volume is, the more discount you can enjoy.

(2). Q: Why is your price a bit higher than other Chinese suppliers?

 A: To meet the requirement of different customers and areas, our factory manufactures various kinds of quality for each item at a wide range of price. We can offer the products of different quality levels depending on customer’s target price and quality requirement.
(3). Q: How can I get a sample?

A: Normally small samples can be sent free of charge and customers just need to bear a little shipping charge, or you can provide your DHL,FEDEX,EMS,UPS courier account number to us. For bigger sizes, it depends.

(4). Q: How can you guarantee the quality of mass production is same with the sample sent to me before?

A: Our warehouse staff will leave another same sample in our company, with your company name marked on it, which our production will be based on.

(5). Q: How can you deal with quality issues that customer feedback after receiving the goods?

1) Customers take photos of unqualified goods and then our sales staff will send them to Engineering Department to verify. 

2) If the issue is confirmed, our sales staff will explain the root cause and take corrective actions in coming orders.

3) Finally, we will negotiate with our customers to make some compensation.

WHO WE ARE

Our policy is to achieve customers' satisfaction both by providing them with high level product quality and services that meet or exceed their expectation. Our aim is to ensure that our clients continue to put their faith in us for many years to come.

ABOUT US

OUR THINKING

We truly believe in long term relationship with our clients and our motto is customer satisfaction. We always believe in supplying best quality products at most reasonable price. 

OUR GOALS

High Quality - We put every effort to provide products for our customers with highest standards of value, quality, service and integrity.

Employee Safety - Employees are valuable assets of any good company. Therefore our endeavour is to provide a safe and healthy work environment for our employees.

Environmental protection - We care for environment and our facility work in an environmental friendly manner.

On Time Delivery - We deliver when we promise!