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Welding steel support electrode needs to be tested

Welding steel support electrode needs to be tested

Answer:

Cold drawing core electrode eccentricityElectrode diameter/mm eccentricity /%Carbon steel electrode, low alloy steel electrode, stainless steel electrodeSurfacing electrodeLess than 2.5 less than 7 = 73.2 ~ 4 = 5 = 5Less than or equal to 4Less than or equal to 5Non core drawing electrode eccentricityElectrode diameter/mm eccentricity /%Carbon steel electrode, low alloy steel electrode, stainless steel electrodeSurfacing electrodeLess than 4 = 15 = 8 = 10 = 105.6Less than or equal to 7
Electrode type electrode diameter /mm drop height /m electrode electrode skin rupture length/mm carbon steel welding rod, low alloy steel electrode, stainless steel electrode< 41 < 30 > 40.5 < 40Cast iron electrode< 40.7 < 304; 50.5 = 60.3Welding electrode is less than 4 D/d = 1.7 D/d > 1.73010.7 = 4Zero point fiveZero point threeNote: D is the electrode diameter, mm; D core diameter, mm.(3) test for moisture resistance of electrode coatingThe electrode immersed in 15 to 20 degrees Celsius in the water, 4H (cast iron electrode 0.5h) after the observation, the skin should not be opened, cracking or peeling phenomenon.4) test welding length, the diameter of the core wireThe electrode length and core diameter, clamping end length, the relevant provisions should be in accordance with GB/T 5117-95 and GB/T 5118-95 respectively, GB/T 983-95, GB 984-85 and GB 10044-88 standard.
The test, the electrode level tapped from 0.5 ~ 1m high degree of freedom to thickness greater than or equal to 14mm and the horizontal smooth plate and detected electrode can be severely damaged, only broken in the coating at both ends of the electrode allows the falling height and the values shown in Table 11 allows the total length of rupture the.Table 11 allowable values of the dropping height and the total length of the crack in the test of the electrode skin strengthElectrode type electrode diameter /mm drop height /m electrode electrode skin rupture length

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