10pcs U Shape Sic Jinyu Electric Heating Elements High Temp Furnace and Kilns

Description: Attention please: The price varies, it depends on the technical parameters you want, packing, shipping, Insurance, customs and the way of payment, so please message us with the following information if you are interested in our electric heating elements so that we can quote an exact price: U Shape Sic Jinyu Electric Heating Elements High temperature Furnace and Kilns GDU type;Quantity: (pcs, MOQ is 10 pcs)HL: (mm);CL : (mm);D: (mm);M: (mm);N: (mm); The U shape heating element is a kind of non-metal high temperature electric heating element It is made of selected super quality green silicon carbide as main material,which is made into blank,silicified under high temperature and recrystallizationCompared with metal electric heating element,this kind of U shape heating element is characterized by applied in high temperature,oxidation resistance,corrosion,long life and small deformation Therefore, it is widely used in various high temperature electric furnaces and other electric heating devices, such as in the industries of magnet,ceramics,powder metallurgy, glass, metallurgy and machinery, etc. We adopt new production process of cold ends,so our U shape heating element have excellent specific rate of heat zone resistance and cold end resistance,saving energy,long life,avoiding over-temperature of cold ends to damage the furnace body.the commercial name of our U shape heating element is Honesty heating elements. The linear expansion coefficient,heat conductivity and specific heat of U shape heating element will change along with temperature change.And the relational date are the follows. Temperature Linear expansion coefficient (10-6m/C) Heat conductivity Porosity rate (C) (Kcal/M hrC) 0 / / 0.148 300 3.8 / / 400 / / O.256 600 4.3 14-18 / 800 / / 0.294 900 4.5 / / 1100 / 12-16 / 1200 4.8 / 0.325 1300 / 10-14 / 1500 5.2 / /Chemistry property of heating elements1.Antioxidant property of U shape heating element The U shape heating element start to being oxidized when heated to 800C in air;and Si02 protection film will be generated in surface of hot zone when temperature get to 1000-1300C;Cristobalite crystalized at 1300ºC,at 1500ºC the protection film reaches a certain thickness which make the oxidation speed being most slowly and tends to be stable.If continuely heat to over 1627ºC,the protection film will be damaged and oxidation speed will be more rapid evidently and make the U shape heating elements damaged earlier. Though the U shape heating element will be oxidized very slowly in course of application,it also will make the resistance increased in use of a long time,this phenomenon is called ageing.In order to lower the ageing speed,we use special technology to coat a protection film on the surface of hot zone in the process of production,which enhance the antioxidant property of U shape heating element obviously and lengthen the service life. 2.The effects of alkali and alkaline metal oxide to U shape heating element The alkal and alkaline metal oxide will react with SiC at about 1300C and generate silicate,which is called alkali-chemical corrosion,and can influence degree of the U shape heating element glowing. 3.The effects to U shape heating element from melting metal Some metals,such as cobalt,nickel,chrome and so on ,can corrade the U shape heating element in hign temperature melting state and affect the service life of heating element. The key factor to the optimum service life of the U shape heating element is to select the surface load of the heating element correctly according to the furnace construction,atmosphere and temperature.Below figure shows the relation between furnace temperatures,heating element temperature and U shape heating element surface load under the condition that the heating element radiation isn't obstructed. Installation and operation of U shape heating element 1.In order to keep furnace temperature and the load-bearing uniform of each heating element,before installation, the U shape heating element must be grouped,The resistance value deviation of each group should be below +/-10% 2.As the U shape heating element is very brittle,be careful while install and avoid anydamage. 3.When start to operate the furnace ,raise voltage slowly and gradually,never give full load at one time,or the U shape heating element will be damaged due to the over current impulse. 4.To use the U shape heating element,you should prepare the adjustable transformer or silicom controlled transformer,voltage meter,current meter and autocontrol temperature meter etc,During the working,the voltage should be increased,for maintaining the furnace normal temperature because the resistance value will go up gradually caused by the oxidation of U shape heating element.When the voltage get to the up limit of the transformer and the temperature is still low than the requirement ,the furnace should be stopped,change the connection wire way connection and then continuely work. 5.In the course of long operation of the furnace,if any individual U shape heating element is damaged owing to certain reasons and should be changed ,you should replace it with proper one whose resistance value corresponds to that of the old one,never use a new U shape heating element random.lf the heating element is much damaged or its resistance value increases too much and cannot reach the furnace temperature ,it is better to replace all the silicon carbide heating element with new heating elements.Test and mark the resistance value of the old heating elements(with voltmeter and ammeter )and distribute them in low temperature area. 6.The diameter of the hole in the furnace wall is 1.5 time of the U shape heating element diameter and the clearance to be jam using asbestos rope or aluminum silicate fiber felt. About Us Dengfeng City JinYu Electric Heating Material Co., Ltd is a high & new technology enterprise who is a professional manufacture for electric heating elements, furnace and anti-fire material products. Our company locates at Dengfeng city, Zhengzhou, Henan Province, which is less than 10 kms to the southeast of world famous Shaolin Temple, we have been engaged in the industry for more than 15 years and won great reputation for high quality, reasonable price of products and excellent customer service from customers of American and European countries, Middle East, Russia, Japan, Korea and many ohter coutries. There are four main categories of Products: Electric heating elements, Nonferrous metals products, Furnace and anti-fire material. Our products are widely used in the industry of glass, Chinaware, lighting, magnetism materials, fluorescent materials, false crystal, Machinery, Electro Vacuum materials, industrial apparatus etc. The long service life and consistent performance of JinYu electric heating elements is due to our emphasis on quality control, from starting material to finished product. Our highly experienced engineers will provide you with expert design necessary for achieving the highest production efficiency at the lowest long-term cost. Customers from all over the world are welcome to visit our factory. Specification 1. Name: Mosi2 heating element 2. Type: ED, DB, ShapeSC, SCR, U, W 3. Production process: Made into blank, silicided under high temperature and re-crystallized. 4. Character: High-applied temperature, anti-oxidization, anti-corrosion, long service life, little deformation, easy installation and maintenance. Advice of using the element 1. In order to keep furnace temperature and the charges uniform of each element, before installation resistance distribution must be carried. 2. As the element is very brittle, be careful while install and maintain to avoid any damage. 3. When start to operate the furnace, raise voltage slowly and gradually, never give full load at one time. Usage Used in various high temperature electric furnaces and other electric heating devices, such as in the industries of magnet, ceramics, metallurgy, glass, and machinery.Payment Methods 1) L/C; 2) T/T; 3) Paypal; 4) MG; 5) WUOthers main products 1. Molybdenum &Tungsten products. 2. Tungsten copper alloy products. 3. Various of heating elements. 4. All kinds of high temperature Lab furnace. 5. Heating zone for sapphire growth furnace.

Price: 389 USD

Location: 登封市, 河南省

End Time: 2023-11-10T01:47:00.000Z

Shipping Cost: 195 USD