The reason why the mechanical strength of graphite products increases with increasing temperature can be explained as follows: 1. Graphite products will not produce local plastic deformation at low temperatures, so even if a relatively low load is given, it will cause cracking due to the very concentrated stress. However, when the temperature rises to a certain degree, due to the plastic state, local deformation occurs near the stress concentration point, and the stress is dispersed, even if a relatively large load is applied, it will not cause cracking. 2. Due to the large anisotropy of the linear expansion coefficient of graphite crystals, after cooling from high temperature, large stress will be generated inside the crystal grains. Due to the large value of the external stress superimposed on the internal stress, the strength of graphite at low temperature is more Low, but the stress gradually decreases when heated to a certain temperature, so the mechanical strength increases with increasing temperature.
Quality System of top graphite electrode manufacturer-Aohui Carbon Company
Aohui carbon company is China’s leading supplier of graphite electrode, CPC and carbon block. Possessing sophisticated production lines and inspection equipments, providing diverse lines of carbon metallurgical products backed by expert R&D technical support, we develop closer customer relationships and taking on a larger role in the total supply and manufacturing chain. Our products meet and exceed the challenges of thousands of applications, and continue to be innovated. We stand for the maxims of uncompromising quality, outstanding customer service and operational dependability. Our highest priorities for our customers are quality and cost. It is important that our customers benefit from our state-of-the-art products at unbeatable price-performance ratios. We implement custom solutions with the highest flexibility and precision. Our dedicated employees, the true carbon metallurgical material experts, make graphite products successful globally.
As an influential and responsible supplier, we are able to provide our customers with more thoughtful services and technical support. Aohui carbon ‘s strengths extend far beyond the processing of graphite electrode. Depending on customer requirements, the company offers services including: application-engineering consulting, selection of materials, field supervisors, and much more. aohui carbon company offers a complete set of carbon metallurgical products with a range of products for one-stop shopping.
Customer’s satisfaction is our ultimate goal. We believe our devotion to carbon metallurgical industry will help us to achieve global leadership in providing world-class cost effective, superior quality services to customer in the world.
【graphite electrode】
Using coal pitch as binder, our graphite electrode which is mainly made of petroleum coke and needle coke is being made through the process of calcination, compounding, kneading, pressing, baking, impregnation, graphitization and machining.
【Application of Aohui carbon graphite electrode】
1. Aohui carbon graphite electrode is being used in electric arc steelmaking furnace graphite electrode is mainly used in electric furnace steelmaking. Electric furnace steelmaking uses graphite electrodes to introduce current into the furnace. A strong current generates an arc discharge through the gas at the lower end of the electrode, and uses the heat generated by the arc to smelt.
2. Aohui carbon graphite electrode is being used in ore-heating furnaces graphite electrode ore-heating furnaces are mainly used to produce ferroalloys, pure silicon, yellow phosphorus, matte and calcium carbide, etc., which is characterized by electrical conductivity.
3. For resistance furnaces, graphitization furnaces for producing graphite products, melting furnaces for melting glass, and electric furnaces for producing silicon carbide are all resistance furnaces.
4. Used for processing a large number of graphite electrode blanks; also used for processing into various crucibles, graphite boats, hot die casting molds and heating elements for vacuum electric furnaces, etc…