D502 valve welding electrode line GBEDCr-A1-03 Description: D502 titanium calcium type coating for welding electrodes 1Cr13 valve can be both AC and DC welding technology is good. Deposited metal as a semi-1Cr13 high chromium ferritic steel. Surfacing with air quenching properties, generally not be heat-treated, even hardness, can also be annealed at 750-800 ℃ soften when heated to 900-1000 ℃ air-cooled or oil quenched, re-hardening. Uses: This is a common use of surfacing electrode for welding temperature below 450 ℃ of carbon steel or alloy steel shafts and valves.
D507 valve Welding Electrode line GBEDCr-A1-15 Description: D507 is a low hydrogen sodium type coating for welding electrodes 1Cr13 valves, DC reverse. Deposited metal as a semi-1Cr13 high chromium ferritic steel. Surfacing with air quenching properties, generally not be heat-treated, even hardness, can also be annealed at 750-800 ℃ soften when heated to 900-1000 ℃ air-cooled or oil quenched, re-hardening. Uses: This is a common use of surfacing electrode for welding temperature below 450 ℃ of carbon steel or alloy steel shafts and valves.
D507Mo valve surfacing electrode line GBEDCr-A2-15 Description: D507Mo low hydrogen sodium type coating for welding electrodes 1Cr13 valve type. Deposited metal as a semi-1Cr13 high chromium ferritic steel. Surfacing with air quenching properties, deposited metal has a high-temperature hardness, good thermal stability, erosion resistance. If used in conjunction with the D577 electrode can get a good anti-abrasion performance. Welding process is simple, no preheating before welding, after welding without heat treatment, using DC reverse. Uses: used in welding temperature below 510 ℃ in temperature and high pressure valve sealing surface. Valve sealing surface of the electrode should be used in conjunction with the D577 electrode (with the valve seat above two electrodes were used). D507MoNb valve surfacing electrode line GBEDCr-A1-15 Description: D507MoNb low hydrogen sodium type coating of the welding electrode valve 1Cr13, DC reverse, due to drug skin by adding the right amount of Mo, Nb, etc. to strengthen the stability of elements, it deposited metal has good antioxidant and anti-cracking performance. Application: temperature at 450 ℃ below, the low pressure valve sealing surface surfacing.
D512 valve welding electrode line GBEDCr-B-03 Description: D512 titanium calcium type coating of the welding electrode 2Cr13 valve, AC and DC welding technology is good. Deposited metal is 2Cr13 martensitic high-chromium steel. Surfacing with air quenching properties, generally without heat treatment, hardness uniformity, annealing at 750-800 ℃ soften when heated to 950-1000 ℃ air cooling or oil quenching re-hardening. Uses: D512 is a versatile surfacing electrode surface, hard surfacing more than the D502, more wearable, more difficult process for welding carbon steel or low alloy steel shaft, with superheated steam valve, mixer paddle, screw conveyor blades.
D516MA valve surfacing electrode line GBEDCrMn-A-16 Description: D516MA low hydrogen potassium type coating of high-chromium-manganese steel surfacing electrode, the metal cladding layer has good abrasion resistance, heat resistance, corrosion resistance and thermal crack performance welding process is simple, no preheating before welding, after welding without heat treatment, welding layer can be machined. Uses: used in welding temperature below 450 ℃ under water, steam, oil medium under the action of the components, such as 25, cast steel, high pressure valve sealing surface.
D517 valve welding electrode line GBEDCr-B-15 Description: D517 is a low hydrogen sodium type coating of 2Cr13 valve welding electrode, DC reverse. Deposited metal is 2Cr13 martensitic high-chromium steel. Surfacing with air quenching properties, generally without heat treatment, hardness uniformity, annealing at 750-800 ℃ soften when heated to 950-1000 ℃ air cooling or oil quenching re-hardening. Uses: D517 is a versatile surfacing electrode surface, hard surfacing more than the D502, more wearable, more difficult process for Carbon Steel Welding Electrode or low alloy steel shaft, with superheated steam valve, mixer paddle, screw conveyor blades.