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Place of Origin
HS-CODE
27-
Package & Delivery Lead Time
Detailed Description
Specifications and properties:
1.NP /RP graphite electrode:
Dia 75-130mm, Resistivity max 8.5, Bending strength min 9.8 mpa, Elastic modulus max 9.3gpa, CTE max 2.9 x 10-6/c, , Bulk density min 1.58g/cm3, ASH max 0.5%.
Dia 150-200mm, Resistivity max9.0, Bending strength min 9.8 mpa, Elastic modulus max 9.3gpa, CTE max 2.9 x 10-6/c, , Bulk density min 1.52g/cm3, ASH max 0.5%.
Dia250-350mm, Resistivity max 9.0, Bending strength min 7.8 mpa, Elastic modulus max 9.3gpa, CTE max 2.9 x 10-6/c, , Bulk density min 1.52g/cm3, ASH max 0.5%.
Dia 400-500mm, Resistivity max9.0, Bending strength min 6.4 mpa, Elastic modulus max 9.3gpa, CTE max 2.9 x 10-6/c, , Bulk density min 1.52g/cm3, ASH max 0.5%.
nipple: Resistivity 8.5 max, Bending strength12.7 mpa min, Elastic modulus13.7gpa max, CTE max 1.6-2.2 x 10-6/c, , Bulk density min1.63-1.68g/cm3, ASH max 0.5%.
2.HP graphite electrode:
Dia300-500mm, Resistivity 6.0-7.0, Bending strength9.8-12.0 mpa, Elastic modulus 10.0-12.0gpa, CTE max 2.2 x 10-6/c, , Bulk density min 1.62-1.70g/cm3, ASH max 0.3%.
nipple: Resistivity 3.5-5.5, Bending strength14.0-20.0 mpa, Elastic modulus 14.0-18.0gpa, CTE max 1.6-2.2 x 10-6/c, , Bulk density min 1.70-1.78g/cm3, ASH max 0.3%.
3.UHP graphite electrode:
Dia300-500mm, Resistivity 6.3 max, Bending strength 10.5 mpa min, Elastic modulus 14.0 gpa max, CTE max1.5 x 10-6/c, , Bulk density min 1.66g/cm3, ASH max 0.3%.
Dia550-700mm, Resistivity 6.3 max, Bending strength 11.0 mpa min, Elastic modulus 14.0 gpa max, CTE max1.4 x 10-6/c, , Bulk density min 1.66g/cm3, ASH max 0.3%.
nipple: Resistivity 3.5-5.0, Bending strength20.0-25.0 mpa, Elastic modulus 16.0-22.0gpa, CTE max 1.2 x 10-6/c, , Bulk density min 1.72-1.82g/cm3, ASH max 0.3%
Packing
(a) The stores shall be packed in sufficiently durable wooden box to withstand overseas shipment and tropical conditions and also to ensure against exposure damage during transit Off loaded at the port of destination.
(b) Graphite Electrode and Nipples will be carefully packed separately for shipment.
(c) For added protection the electrodes should be enclosed by Battens on all side and additionally secured by metal hands to protect the threads, the face of the electrode should be covered with cardboard disk, Electrode should be covered with strong PVC sheets to withstand transportation during rainy season.
Directions for use of graphite electrodes
1. When choosing diameter of the graphite electrodes for electric steel-making furnace, please refer to the current carrying capacity of the electrodes.
2. The transport and storage of the graphite electrodes must be kept away from being moistened or wetted by rain, snow and water. Be sure to dry them up before use.
3. During loading, unloading and transportation, the graphite electrodes must be handled with great care to protect the threads from being damaged by collision. in the course of loading, unloading and hoisting, it is advisable to use special hoist tools.
4. Before the electrodes are connected to the nipples, it is necessary to blow the electrode threads thoroughly clean with compressed air and screw the nipples tightly according to requirement for using moment spanner.
5. The terMinal faces or the two electrodes tightly screwconnected must be kept in close contact.
6. When the elevator of the electric arc furnace is hoisting the electrodes, no swinging so as to avoid the electrode joints being loosened and dislocated .
7. The holder devices of the electrodes should not hold the electrodes near the area of nipple sockets.
8. In order to prevent the breakage of the electrodes in case of scrap cave-ins, lift the electrodes in time according to the melting conditions dump the unmelted waste steel into the pool.
9. Charging the furnace, put the large scrap steel lumps at the bottom and the small ones at the top.
10.In order to prevent dislocation after the electrodes being jointed, we provide binding paste and pins which are easily to be applied.
For making constant improvement of our electrodes quality so as to serve our customers better, please always keep us informed of your comments and requirements.
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