Graphite Electrode Uhp

 

The graphite electrode is a consumable material, which gradually burns out during the melting process and the new product is joined to the old one using the nipple connection method. To do this, there is an internal threaded connection at both ends of the product, into which a nipple is screwed, which is supplied with the electrode. This design ensures a continuous supply of consumables.

Depending on the size of the furnace, UHP graphite electrodes have different sizes. Their diameter ranges from 300 to 600 mm. The standard length of the product is 1800 – 2000 mm.

 

 

Standard Sizes of Electrode: If special specification requirements exist, both sides consult supply & demand.

Category	No.	Specifications
		Diameter (mm)	Length (mm)
Ultra high power graphite electrode	1	300	1800
	2	350	1800
	3	400	2200
	4	450	1800
	5	500	2200
	6	550	2300
	7	600	2400
	8	700	2700

 

Technical Properties of Ultra High Power Graphite Electrodes and Nipple
Item	Classification	Unit	Nominal Diameter (mm)
			300-400		450-500		550-700
Electric Resistivuty(<=)	Elatrode	μΩ.m	6.2		6.2		6.3
	Nipple		5.0		5.0		4.5
Bending strength(>=)	Elatrode	Mpa	10.5		10.5		11.0
	Nipple		18.0		18.0		20.0
Elastic moduluc(<=)	Elatrode	Gpa	14.0		14.0		14.0
	Nipple		18.0		18.0		22.0
Bulk density(>=)	Elatrode	g/cm3	1.66		1.66		1.66
	Nipple		1.75		1.75		1.75
CTE(<=)	Elatrode	X10-6/ºC	1.5		1.5		1.4
	Nipple		1.4		1.4		1.2
Ash(<=)		%	0.3		0.3		0.5
Note: Ash content and thermal expansion coefficient are parameter indicators

If there are special specification requirements, both sides consult supply and demand.

 

 

 

The main raw material for them is low-ash petroleum coke with the addition of electrode waste. For production, the solid components are crushed and bound with coal pitch. The resulting mass is given the required shape using presses, after which it goes through the process of drying and firing.

 

Then the resulting product undergoes graphitization at elevated temperatures for 100 hours. During this procedure, the contained impurities evaporate, the level of electrical resistance decreases, and the material itself becomes more amenable to mechanical processing.

 

To ensure oxidation resistance, the product is impregnated with special compounds. The result is a high-quality product with excellent performance characteristics. The content of ash impurities in the composition does not exceed 0.3%.

 

 

 

 

 

Q: What about your delivery date in normal conditions?

A: We send the cargo within 15 days after receiving the deposit.

 

Q: what about your package?

A: Usually as per customer's requests.Common packing information: small size in bundles, big size in bulksome sizes with plastic capstan to protect both ends, seaworthy packaging.

 

Q: If products have some quality problem, how would you deal with it?

A: We will be responsible for all of our quality problems.

 

Q: How can you control your quality?

A: For each production processing, ZhenAn has a complete QC system for the chemical composition and Physical properties. After production, all the goods will be tested, and the quality certificate will be shipped along with the goods.

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