Valve rod to use:

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 Electrodes1Cr13 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 Electrodeor low alloy steel shaft, with superheated steam valve, mixer paddle, screw conveyor blades.
D547 valve welding electrode line GBEDCrNi-A-15 Description: D547 is a low hydrogen sodium type coating, steel core CrNiSi valve welding electrode with a DC reverse. Deposited metal to rely on silicon intensive, to get a certain ferrite austenite, so that it has good anti-abrasion, corrosion, oxidation and other properties. Uses: 570 ℃ for welding high-pressure boiler plant operating below the valve sealing device sealing surface and other parts.

D547Mo valve surfacing electrode line GBEDCrNi-B-15 Description: D547Mo low hydrogen sodium type coating of CrNiSiMo valve welding electrode. DC reverse. Deposited metal has good high temperature abrasion resistance, erosion resistance and other properties, have high-temperature hardness, good thermal stability and fatigue resistance. Deposited metal aging strengthening effect is remarkable, as the aging time increased, hardness and abrasion resistance to further improve performance. Uses: for temperature lower than 600 ℃ high-pressure valve sealing surface of the surfacing.

D557 valve welding electrode line GBEDCrNi-C-15 Description: D557 is a low hydrogen sodium type coating of CrNiSi valve welding electrode, welding of metal depend on a large number of silicon intensive, get austenite ferrite, with the aging time increased, hardness and abrasion resistance are further improved performance, deposited metal has good corrosion resistance, oxidation resistance and corrosion resistance, DC reverse. Uses: for temperature lower than 600 ℃ high-pressure valve sealing surface of the surfacing.

D577 valve welding electrode line GBEDCrMn-C-15 Description: D577 is a low hydrogen sodium type coating, chrome-manganese steel core valve welding electrode. DC reverse, metal welding-type high-Cr-Mn austenitic steel, it is a significant effect of work hardening, has a good anti-abrasion performance, in a certain temperature hardness, good thermal stability, such as cooperation with D507Mo Use, availability of good anti-abrasion performance, good crack resistance of the electrodes, welding process is simple, from time to preheat welding, weld without heat treatment, welding metal cutting performance is good. Uses: used in welding temperature below 510 ℃ in temperature and high pressure valve sealing surface, such as in the valve in conjunction with D507Mo life higher. Valve welding electrode for use: the implementation of GB984-2001 standard surfacing in the workpiece surface or the edge of the deposited layer of wear, corrosion, heat and other properties of metal welding process. Repair and improve parts of life, the rational use of materials, improve product performance, reduce costs with significant economic benefits. Surfacing work and working conditions are very complex, welding must be selected according to different requirements of the appropriate electrodes. Different workpiece and welding electrodes welding technology to be different in order to obtain satisfactory welding results.