Strict control layer between temperature layer 100 of 150 ° C temperature control. Manual arc Welding Electrode welding operation technology: backing weld special attention to the size and shape of the control of the molten pool, pool size should be controlled in of 5 ~~ 6mm oval shape, shipped Article uniform line; weld surface should be as smooth as possible easy slag, to reduce the amount of convex weld grinding, and better control of the lower welding intermittent, reduce the generation of defects in welds; weld the joints before closing arc should be polished into a gentle slope like at the joints The front-end to ignite arc, pull back to normal welding joints, to avoid the production of welded joints pores and slag. Argon-enriched welding operation techniques: rich argon welding, to pay special attention to the control of the arc voltage and the welding speed the key is to maintain the arc length during the welding process does not change the basic. Dry elongation of 10 ~ 15mm, gases argon and carbon dioxide gas mixture left welding welding, welding power DCRP. Control of the welding parameters: welding should be strict control of process parameters is not allowed to exceed the specified range. After heat treatment: after heat treatment to eliminate the the weld residual hydrogen and residual stress, improve weld microstructure and mechanical properties, is one of the effective measures to prevent cracks. After the heat treatment process: flame heating the weld on both sides of 100mm, the heating temperature to 300 to 350 ℃, asbestos insulation, asbestos thickness of 100mm, width of 400mm, holding time 2h freedom cooling. Welding procedure(Welding Electrode Manufacturer) qualification results Specimens in accordance with the completion of welding procedure qualification JB/T4730-2005 standard X-ray flaw detection after 24 hours by the third-party testing company found no defects exceeding the weld quality meet the design requirements weld grade grade II or more, detect weld mechanical properties to meet the design requirements.
With wear-resistant Welding Electrode Manufacturer welding in the brick spiral reamer wear parts, has been many brick identity is a simple, effective for reducing energy consumption and savings measures. However, the effect of the use of the plant is not exactly the same, in addition to the quality of the electrode itself, the method of operation is the main reason. The spiral reamer in the exclusion of mud, sliding. Therefore required the reamer to promote surface should be smooth in order to reduce the resistance. So, if once at the same time in all the surface of the reamer Tungsten Welding Electrodes wear is bound to its surface roughness, significant increase in resistance, clay squeeze past, the mud cylinder serious fever, unable to produce. In fact, the sections on the brick spiral reamer wear are not the same, bear only the first section of extrusion mud and transportation tasks tail section of the mud wear Big Five? Six times! Reamer is the same section, the ministries wear difference between great: the front of the blade of the cutter knife to push the mud wear; while the back of the blade, almost free from any pressure, minimal wear and tear; blade edge, not only line speeds up, and with the the mud cylinder wall adhesion mud strong friction, wear the largest; reamer sleeve diameter of only one-third of the diameter of the outer edges of the blades, wear only one-third of its shouldered cut and extruded mud dual task; The first section of the reamer vice leaves the body by the amount of wear is even greater. For wear layer surfacing should be the thickest part of the edges, up to 5mm. All welding edges? Front of the blade from the edge to the center stack about 50mm wide one, and this one should be 3 to 4mm thick edge, according to the above principles before getting to the middle of the thin pieces of leaves? other parts of the reamer, without surfacing. The brick spiral reamer and mixer blades only abrasive wear, no shock loads, but also hope that the surface of the solder layer formation, the welding arc length is slightly larger than the diameter of the electrode should be used for long-arc welding; serpentine (W) shipped strip method or-eight (888) transport of Treaty and Law. In this way, just with less electrode, high ergonomics and excellent wear a wide, flat surface. In welding brick the spiral reamer positive when, in order not to weld to give the mud adding too much resistance, Shun blades arc direction down mudslides forward direction surfacing must not along the radius horizontal surfacing along the blade, resulting in mud slides forward across the threshold.