30 May
30May

描述

HP石墨电极是电弧炉炼钢的导电元件。它由石油焦,针状焦,煤沥青制成,并由一系列严格的生产工艺生产。高电流线通过炉体内的石墨电极端口插入。这将在电弧炉中释放电能以加热炉子。

随着EAF炉尺寸变大,对较大直径电极的需求一直在增加。直径为500mm或600mm的石墨电极近年来变得越来越流行。

特征

  • 长寿抗氧化治疗。
  • 高纯度,高密度,强化学稳定性。
  • 加工精度高,表面光洁度好。
  • 机械强度高,电阻低。
  • 耐开裂和剥落。
  • 高抗氧化和抗热冲击性。

应用

石墨电极广泛用于合金钢,金属和其他非金属材料等的生产。

  • 直流电弧炉。
  • 交流电弧炉。
  • 埋弧炉。


用于埋弧炉的石墨电极


交流电弧炉用石墨电极

Graphite electrodes are used in direct current electric arc furnace steelmaking.

直流电弧炉用石墨电极

规格

英寸毫米
直径电阻
(≤,μΩ·m)
密度
(≥,g / cm 3
弯曲强度
(≥,MPa)
弹性模量
(≤,GPa)
灰分含量
(≤,%)
CTE
(100°C - 600°C)
(≤,10 -6 /°C)
电流负载
(A)
电流密度
(A / cm 2
Table 1: Technical Specification of HP Graphite Electrode
82006.51.6210.5120.32.45500–900018–25
92256.51.6210.5120.32.46500–1000018–25
102506.51.6210.5120.32.48000–1300018–25
123006.51.6210.5120.32.413000–1740017–24
143506.51.6210.5120.32.417400–2400017–24
164006.51.6210.5120.32.421000–3100016–24
184506.51.609.8120.32.425000–4000015–24
205006.51.609.8120.32.430000–4800015–24
225506.51.609.8120.32.437000–5700015–23
246006.51.609.8120.32.444000–6700015–23
(inch)(mm)(max.)(min.)(rough spot)
Nominal DiameterActual DiameterNominal LengthToleranceShort Length
Diameter (mm)Length (mm)
Table 2: Graphite Electrode Size & Tolerance
82002052001971600±100-275
92252302252221600
102502562512481600/1800
123003073022991600/1800
143503573523491600/1800
164004094034001600/1800/2000/2200
184504604544511600/1800/2000/2200
205005115055021800/2000/2200/2400
225505625565531800/2000/2200/2400
246006136076042000/2200/2400

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.
300–400450–600
SpecificationDefect DimensionNominal Diameter of Graphite Electrode (mm)
Diameter (mm)20–40
(< 20 mm should be negligible)
30–50
(< 30 mm should be negligible)
Depth (mm)5–10
(< 5 mm should be negligible)
10–15
(< 10 mm should be negligible)

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