China professional factory for Graphite Electrode Nipple - HP GRAPHITE ELECTRODES – the Diameters Range From 200 mm to 600 mm – Aohui Manufacturer and Factory

professional factory for Graphite Electrode Nipple - HP GRAPHITE ELECTRODES – the Diameters Range From 200 mm to 600 mm – Aohui

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We not only will try our greatest to supply outstanding services to every shopper, but also are ready to receive any suggestion offered by our buyers for dia100-600mm RP HP UHP , Rp Graphite Electrode , Graphite Electrode Uhp 600 , Living by quality, development by credit is our eternal pursuit, We firmly believe that after your visit we will become long-term partners.

professional factory for Graphite Electrode Nipple - HP GRAPHITE ELECTRODES – the Diameters Range From 200 mm to 600 mm – Aohui Detail:

DESCRIPTION

HP graphite electrode is the conducting element for electric arc furnaces steelmaking. It is made of petroleum coke, needle coke, coal pitch and produced by a series of strict production processes. High-current lines insert through the graphite electrode port inside the furnace body. This will releases electric energy in the arc furnace to heat the furnace.

The demand for the larger diameter electrodes has been increasing as EAF furnace sizes become larger. Graphite electrodes with diameter of 500 mm or 600 mm have become increasingly popular in recent years.

FEATURE

Anti-oxidation treatment for longevity.
High-purity, high-density, strong chemical stability.
High machining accuracy, good surface finishing.
High mechanical strength, low electrical resistance.
Resistant to cracking & spalling.
High resistance to oxidation and thermal shock.

APPLICATION

Graphite electrodes are widely used for production of alloy steels, metal and other nonmetallic materials, etc.
DC electric arc furnace.
AC electric arc furnace.
Submerged arc furnace.

SPECIFICATION

Table 1: Technical Specification of HP Graphite Electrode

Diameter		Resistance	Density	Flexure Strength	Elastic Modulus	Ash Content	CTE	Current Load	Current Density
Diameter		(≤, µΩ·m)	(≥, g/cm3)	(≥, MPa)	(≤, GPa)	(≤, %)	(100 °C – 600 °C)	(A)	(A/cm2)
inch	mm						(≤, 10-6/°C)
8	200	6.5	1.62	10.5	12	0.3	2.4	5500–9000	18–25
9	225	6.5	1.62	10.5	12	0.3	2.4	6500–10000	18–25
10	250	6.5	1.62	10.5	12	0.3	2.4	8000–13000	18–25
12	300	6.5	1.62	10.5	12	0.3	2.4	13000–17400	17–24
14	350	6.5	1.62	10.5	12	0.3	2.4	17400–24000	17–24
16	400	6.5	1.62	10.5	12	0.3	2.4	21000–31000	16–24
18	450	6.5	1.6	9.8	12	0.3	2.4	25000–40000	15–24
20	500	6.5	1.6	9.8	12	0.3	2.4	30000–48000	15–24
22	550	6.5	1.6	9.8	12	0.3	2.4	37000–57000	15–23
24	600	6.5	1.6	9.8	12	0.3	2.4	44000–67000	15–23

Table 2: Graphite Electrode Size & Tolerance

Diameter (mm)					Length (mm)
Nominal Diameter		Actual Diameter			Nominal Length	Tolerance	Short Length
(inch)	(mm)	(max.)	(min.)	(rough spot)	Nominal Length	Tolerance	Short Length
8	200	205	200	197	1600	±100	-275
9	225	230	225	222	1600
10	250	256	251	248	1600/1800
12	300	307	302	299	1600/1800
14	350	357	352	349	1600/1800
16	400	409	403	400	1600/1800/2000/2200
18	450	460	454	451	1600/1800/2000/2200
20	500	511	505	502	1800/2000/2200/2400
22	550	562	556	553	1800/2000/2200/2400
24	600	613	607	604	2000/2200/2400

SURFACE QUALITY

There should be less than two defects or holes on the electrode surface, the maximum size of which is mentioned in the below chart.
There should be no transverse crack on the electrode surface. For the longitudinal crack, the length should be less than 5% of the electrode circumference and the width should be 0.3 to 1.0 mm.
The width of black area on electrode surface should be less than 1/10 of the electrode circumference and the length should be less than 1/3 of the electrode.

SpecificationDefect Dimension	Nominal Diameter of Graphite Electrode (mm)
SpecificationDefect Dimension	300–400	450–600
Diameter (mm)	20–40	30–50
Diameter (mm)	(< 20 mm should be negligible)	(< 30 mm should be negligible)
Depth (mm)	5–10	10–15
Depth (mm)	(< 5 mm should be negligible)	(< 10 mm should be negligible)

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Along with the "Client-Oriented" enterprise philosophy, a rigorous high-quality control process, superior production products along with a robust R&D group, we constantly deliver premium quality products, exceptional solutions and aggressive costs for professional factory for Graphite Electrode Nipple - HP GRAPHITE ELECTRODES – the Diameters Range From 200 mm to 600 mm – Aohui , The product will supply to all over the world, such as: Montreal, Kuwait, Moldova, With the spirit of "high quality is our company's life; good reputation is our root", we sincerely hope to cooperate with customers from at home and abroad and hope to build a good relationship with you.

Q1: Is your company AO HUI a manufacturer or trader?
A1: Manufacturer, some time we help our clients to purchase relevant products as a trader.
Q2: What’s the MOQ?
A2. No limitation.
Q3: Can we visit your factory?
A3: Of course ,welcome at any time,seeing is believing
Q4: What’s your payment terms?
A4: Negotiation
Q5: Is your company accept customization?
A5: Professional technology teams and engineers all can satisfy you.
Q6: How do you guarantee quality?
A6: For every production processing,we have 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 goods.
Q7: What’s the proportion of abroad business?
A7: Abroad market around 50%; Domestic market around 50%; and now export proportion is increasing.
Q8: Your company would provide samples?
A8: Yes, we could supply samples for free, and the freight will be undertaken by clients.