How to use the valve electrode:
D502 valve surfacing electrode meets the requirements of GB EDCr-A1-03: D502 is a 1Cr13 type valve surfacing electrode of titanium calcium type coating, which can be used for both AC and DC, and the welding process is good. The surfacing metal is 1Cr13 semi-ferritic high chromium steel. The surfacing layer has air-quenching characteristics, generally does not require heat treatment, has uniform hardness, and can be annealed and softened at 750-800 ° C. After heating to 900-1000 ° C for air cooling or oil quenching, it can be hardened again. Uses: This is a versatile electrode for surface surfacing, used for surfacing welding of carbon steel or alloy steel shafts and valves with operating temperatures below 450 °C.
D507 valve surfacing electrode meets the requirements of GB EDCr-A1-15: D507 is a 1Cr13 valve surfacing electrode with low hydrogen sodium type coating, which adopts DC reverse connection. The surfacing metal is 1Cr13 semi-ferritic high chromium steel. The surfacing layer has air-quenching characteristics, generally does not require heat treatment, has uniform hardness, and can be annealed and softened at 750-800 ° C. After heating to 900-1000 ° C for air cooling or oil quenching, it can be hardened again. Uses: This is a versatile electrode for surface surfacing, used for surfacing welding of carbon steel or alloy steel shafts and valves with operating temperatures below 450 °C.
D507Mo valve surfacing electrode meets the requirements of GB EDCr-A2-15: D507Mo is a 1Cr13 valve type surfacing electrode with low hydrogen sodium type coating. The surfacing metal is 1Cr13 semi-ferritic high chromium steel. The surfacing layer has air quenching characteristics, and the surfacing metal has high medium temperature hardness, good thermal stability and erosion resistance. If used in conjunction with D577 electrode, it can achieve good scratch resistance. The surfacing process is simple, no preheating before welding, no heat treatment after welding, and DC reverse connection. Uses: Used to weld the medium temperature and high pressure stop valve sealing surface with working temperature below 510 °C. The sealing surface of the gate valve should be used with the D577 welding rod (the above two welding rods are used for the valve seat and the valve disc respectively). D507MoNb valve surfacing electrode meets the requirements of GB EDCr-A1-15: D507MoNb is a 1Cr13 type valve surfacing electrode with low hydrogen sodium type coating, which adopts DC reverse connection, because the proper amount of Mo, Nb and other strengthening elements are added to the coating. Therefore, the surfacing metal has good oxidation resistance and crack resistance. Uses: Used for surfacing welding of medium and low pressure valve sealing surfaces with working temperature below 450 °C.
D512 valve surfacing electrode meets the requirements of GB EDCr-B-03: D512 is a 2Cr13 type valve surfacing electrode of titanium calcium type coating, which is suitable for both AC and DC, and the welding process is good. The surfacing metal is 2Cr13 martensitic high chromium steel. The surfacing layer has air-quenching characteristics, generally does not require heat treatment, has uniform hardness, and can be annealed and softened at 750-800 ° C. It can be re-hardened when heated to 950-1000 ° C for air cooling or oil quenching. Uses: D512 is a versatile electrode for surface surfacing. The surfacing layer is harder and more wear-resistant than D502. It is difficult to process. It is used for surfacing carbon steel or low alloy steel shaft, superheated steam valve and mixer. Paddles, screw conveyor blades, etc.
D516MA valve surfacing electrode conforms to GB EDCrMn-A-16 Description: D516MA is a high-chromium manganese steel surfacing electrode with low hydrogen potassium type coating. The surfacing layer metal has good wear resistance, heat resistance, corrosion resistance and thermal crack resistance. Performance, welding process is simple, no preheating before welding, no heat treatment after welding, the surfacing layer can be cut. Uses: Used for surfacing welding parts under the action of water, steam and petroleum medium below 450 °C, such as No. 25 cast steel, high and medium pressure valve sealing surface.
D517 valve surfacing electrode meets the requirements of GB EDCr-B-15: D517 is a 2Cr13 type valve surfacing electrode with low hydrogen sodium type coating, which adopts DC reverse connection. The surfacing metal is 2Cr13 martensitic high chromium steel. The surfacing layer has air-quenching characteristics, generally does not require heat treatment, has uniform hardness, and can be annealed and softened at 750-800 ° C. It can be re-hardened when heated to 950-1000 ° C for air cooling or oil quenching. Uses: D517 is a versatile electrode for surface surfacing. The surfacing layer is harder and more wear-resistant than D502. It is difficult to process. It is used for surfacing carbon steel or low-alloy steel shaft, superheated steam valve and mixer. Paddles, screw conveyor blades, etc.
D547 valve surfacing electrode meets the requirements of GB EDCrNi-A-15: D547 is a low hydrogen sodium type coating, alloy steel core CrNiSi type valve surfacing electrode, using DC reverse connection. The surfacing metal is strengthened by silicon to obtain an austenite structure with a certain ferrite, which has good anti-scratch, anti-corrosion and anti-oxidation properties. Uses: Used to weld the valve sealing surface of the high-pressure boiler installation of the power station below 570 °C and other sealing parts.
D547Mo valve surfacing electrode meets the requirements of GB EDCrNi-B-15: D547Mo is a CrNiSiMo valve surfacing electrode with low hydrogen sodium type coating. Use DC reverse connection. Surfacing metal has good high temperature anti-scratch, anti-erosion and other properties, high temperature hardness, good thermal stability and fatigue resistance. The aging strengthening effect of the surfacing metal is remarkable, and the hardness and the scratch resistance are further improved as the aging time increases. Uses: Used for surfacing welding of high pressure valve sealing surfaces with working temperature below 600 °C.
D557 valve surfacing electrode meets the requirements of GB EDCrNi-C-15: D557 is a CrNiSi type valve surfacing electrode with low hydrogen sodium type coating. The surfacing metal is strengthened by a large amount of silicon to obtain austenitic ferrite structure. The aging time increases, the hardness and scratch resistance are further improved, and the surfacing metal has good corrosion resistance, oxidation resistance and corrosion resistance, and is reversed by DC. Uses: Used for surfacing welding of high pressure valve sealing surfaces with working temperature below 600 °C.
D577 valve surfacing electrode meets the requirements of GB EDCrMn-C-15: D577 is a low hydrogen sodium type coating, alloy steel core chrome manganese type valve surfacing electrode. The use of DC reverse connection, the surfacing metal is high chromium manganese austenitic steel, so the cold work hardening effect is remarkable, has good scratch resistance, has a certain medium temperature hardness, better thermal stability, such as with D507Mo When used together, it can obtain good anti-scratch performance. The welding rod has good crack resistance, the surfacing process is simple, the welding rod can not be preheated, no heat treatment after welding, and the surfacing metal cutting performance is good. Uses: It is used for the welding of medium temperature and high pressure valve sealing surface with working temperature below 510 °C. It can be used with D507Mo in gate valve for higher service life. Instructions for use of valve surfacing welding rod: Execution of GB984-2001 standard surfacing welding is a welding process of welding a layer of wear-resistant, corrosion-resistant, heat-resistant metal layer on the surface or edge of the workpiece. Significant economic benefits for repairing and improving the service life of parts, rational use of materials, improvement of product performance and cost reduction. Surfacing work and working conditions are very complicated. When welding, it is necessary to select suitable welding rods according to different requirements. Different workpieces and surfacing electrodes should adopt different surfacing processes to achieve satisfactory surfacing results.
D502 valve surfacing electrode meets the requirements of GB EDCr-A1-03: D502 is a 1Cr13 type valve surfacing electrode of titanium calcium type coating, which can be used for both AC and DC, and the welding process is good. The surfacing metal is 1Cr13 semi-ferritic high chromium steel. The surfacing layer has air-quenching characteristics, generally does not require heat treatment, has uniform hardness, and can be annealed and softened at 750-800 ° C. After heating to 900-1000 ° C for air cooling or oil quenching, it can be hardened again. Uses: This is a versatile electrode for surface surfacing, used for surfacing welding of carbon steel or alloy steel shafts and valves with operating temperatures below 450 °C.
D507 valve surfacing electrode meets the requirements of GB EDCr-A1-15: D507 is a 1Cr13 valve surfacing electrode with low hydrogen sodium type coating, which adopts DC reverse connection. The surfacing metal is 1Cr13 semi-ferritic high chromium steel. The surfacing layer has air-quenching characteristics, generally does not require heat treatment, has uniform hardness, and can be annealed and softened at 750-800 ° C. After heating to 900-1000 ° C for air cooling or oil quenching, it can be hardened again. Uses: This is a versatile electrode for surface surfacing, used for surfacing welding of carbon steel or alloy steel shafts and valves with operating temperatures below 450 °C.
D507Mo valve surfacing electrode meets the requirements of GB EDCr-A2-15: D507Mo is a 1Cr13 valve type surfacing electrode with low hydrogen sodium type coating. The surfacing metal is 1Cr13 semi-ferritic high chromium steel. The surfacing layer has air quenching characteristics, and the surfacing metal has high medium temperature hardness, good thermal stability and erosion resistance. If used in conjunction with D577 electrode, it can achieve good scratch resistance. The surfacing process is simple, no preheating before welding, no heat treatment after welding, and DC reverse connection. Uses: Used to weld the medium temperature and high pressure stop valve sealing surface with working temperature below 510 °C. The sealing surface of the gate valve should be used with the D577 welding rod (the above two welding rods are used for the valve seat and the valve disc respectively). D507MoNb valve surfacing electrode meets the requirements of GB EDCr-A1-15: D507MoNb is a 1Cr13 type valve surfacing electrode with low hydrogen sodium type coating, which adopts DC reverse connection, because the proper amount of Mo, Nb and other strengthening elements are added to the coating. Therefore, the surfacing metal has good oxidation resistance and crack resistance. Uses: Used for surfacing welding of medium and low pressure valve sealing surfaces with working temperature below 450 °C.
D512 valve surfacing electrode meets the requirements of GB EDCr-B-03: D512 is a 2Cr13 type valve surfacing electrode of titanium calcium type coating, which is suitable for both AC and DC, and the welding process is good. The surfacing metal is 2Cr13 martensitic high chromium steel. The surfacing layer has air-quenching characteristics, generally does not require heat treatment, has uniform hardness, and can be annealed and softened at 750-800 ° C. It can be re-hardened when heated to 950-1000 ° C for air cooling or oil quenching. Uses: D512 is a versatile electrode for surface surfacing. The surfacing layer is harder and more wear-resistant than D502. It is difficult to process. It is used for surfacing carbon steel or low alloy steel shaft, superheated steam valve and mixer. Paddles, screw conveyor blades, etc.
D516MA valve surfacing electrode conforms to GB EDCrMn-A-16 Description: D516MA is a high-chromium manganese steel surfacing electrode with low hydrogen potassium type coating. The surfacing layer metal has good wear resistance, heat resistance, corrosion resistance and thermal crack resistance. Performance, welding process is simple, no preheating before welding, no heat treatment after welding, the surfacing layer can be cut. Uses: Used for surfacing welding parts under the action of water, steam and petroleum medium below 450 °C, such as No. 25 cast steel, high and medium pressure valve sealing surface.
D517 valve surfacing electrode meets the requirements of GB EDCr-B-15: D517 is a 2Cr13 type valve surfacing electrode with low hydrogen sodium type coating, which adopts DC reverse connection. The surfacing metal is 2Cr13 martensitic high chromium steel. The surfacing layer has air-quenching characteristics, generally does not require heat treatment, has uniform hardness, and can be annealed and softened at 750-800 ° C. It can be re-hardened when heated to 950-1000 ° C for air cooling or oil quenching. Uses: D517 is a versatile electrode for surface surfacing. The surfacing layer is harder and more wear-resistant than D502. It is difficult to process. It is used for surfacing carbon steel or low-alloy steel shaft, superheated steam valve and mixer. Paddles, screw conveyor blades, etc.
D547 valve surfacing electrode meets the requirements of GB EDCrNi-A-15: D547 is a low hydrogen sodium type coating, alloy steel core CrNiSi type valve surfacing electrode, using DC reverse connection. The surfacing metal is strengthened by silicon to obtain an austenite structure with a certain ferrite, which has good anti-scratch, anti-corrosion and anti-oxidation properties. Uses: Used to weld the valve sealing surface of the high-pressure boiler installation of the power station below 570 °C and other sealing parts.
D547Mo valve surfacing electrode meets the requirements of GB EDCrNi-B-15: D547Mo is a CrNiSiMo valve surfacing electrode with low hydrogen sodium type coating. Use DC reverse connection. Surfacing metal has good high temperature anti-scratch, anti-erosion and other properties, high temperature hardness, good thermal stability and fatigue resistance. The aging strengthening effect of the surfacing metal is remarkable, and the hardness and the scratch resistance are further improved as the aging time increases. Uses: Used for surfacing welding of high pressure valve sealing surfaces with working temperature below 600 °C.
D557 valve surfacing electrode meets the requirements of GB EDCrNi-C-15: D557 is a CrNiSi type valve surfacing electrode with low hydrogen sodium type coating. The surfacing metal is strengthened by a large amount of silicon to obtain austenitic ferrite structure. The aging time increases, the hardness and scratch resistance are further improved, and the surfacing metal has good corrosion resistance, oxidation resistance and corrosion resistance, and is reversed by DC. Uses: Used for surfacing welding of high pressure valve sealing surfaces with working temperature below 600 °C.
D577 valve surfacing electrode meets the requirements of GB EDCrMn-C-15: D577 is a low hydrogen sodium type coating, alloy steel core chrome manganese type valve surfacing electrode. The use of DC reverse connection, the surfacing metal is high chromium manganese austenitic steel, so the cold work hardening effect is remarkable, has good scratch resistance, has a certain medium temperature hardness, better thermal stability, such as with D507Mo When used together, it can obtain good anti-scratch performance. The welding rod has good crack resistance, the surfacing process is simple, the welding rod can not be preheated, no heat treatment after welding, and the surfacing metal cutting performance is good. Uses: It is used for the welding of medium temperature and high pressure valve sealing surface with working temperature below 510 °C. It can be used with D507Mo in gate valve for higher service life. Instructions for use of valve surfacing welding rod: Execution of GB984-2001 standard surfacing welding is a welding process of welding a layer of wear-resistant, corrosion-resistant, heat-resistant metal layer on the surface or edge of the workpiece. Significant economic benefits for repairing and improving the service life of parts, rational use of materials, improvement of product performance and cost reduction. Surfacing work and working conditions are very complicated. When welding, it is necessary to select suitable welding rods according to different requirements. Different workpieces and surfacing electrodes should adopt different surfacing processes to achieve satisfactory surfacing results.
Fiberglass Backing Pad is mainly used for making flap discs, Clean And Strip Disc, wool felt disc, non woven flap discs, diamond Flap Disc and other abrasive discs
Flap disc backing pad Type: T-27 – Flat shape, T-29 – Conical or Tapered shape
Flap disc backing plate Material: Best quality fiberglass farbic, Excellent phenolic resin, Galvanized metal rings, Backing Flap disc nylon pad surface: Black paper or non-woven cloth
Advantanges:
1. All raw material are adopted with good quality, best quality fiberglass fabric, phenolic resin.
2. From 75~220mm various sepcification of fiberglass backing plate products are available here.
3. For your different requirement, we have diferent layer, shape products for your requirement.
4. Suitable for flap disc, flet disc, clean & strip disc, non-woven flap disc and so on.
Features:
1. High Quality Fiberglass Cloth with Phenolic Resin
2. High-strength fiberglass cloth with good flexibility, light-weight
3. Excellent bonding property and heat resistance
4. Strict detection, full inspection and random testing before shipping
Packing :
For regular order, we packed 100pcs/shrink and 1000pcs/carton, 30cartons on a pallet with plastic fully shrinked outside to avoid moisture.
But we can offer special packing as per customer's needs.
For fiberglass backing pad, the related products we supply is Abrasive Flap Disc , Flap Disc Adhesive , clean and strip disc, nylon fllap wheels, bonded abrasives, and Surface Conditioning Product, this is also our main best selling goods all over the world.
Flap Disc Backing Pad,Flap Disc Backing,Flap Disc Nylon Pad,Nylon Fiber Backing Pad,Plastic backing plate for flap disc
Zhengzhou Jiading Abrasive Manufacturing Co.,Ltd , https://www.jiadingabrasive.com