The invention discloses an acid
electrode with good process performance, and belongs to the technical field of
welding materials. The
electrode consists of a core wire and a
coating. The
coating is characterized by comprising the following components in percentage by weight: 25 to 35 percent of
titanium pigment and
rutile, 15 to 20 percent of selected
ilmenite, 5 to 10 percent of marble and
dolomite, 5 to 10 percent of white mud, 3 to 8 percent of
mica, 8 to 15 percent of
potash feldspar, 4 to 7 percent of
quartz sand, 8 to 13 percent of
manganese-
silicon, 2 to 4.5 percent of chalk, 1 to 1.5 percent of
sodium carbonate, 3 to 5 percent of organic matters and 0.5 to 2 percent of
rare earth magnesium powder, atomized
iron powder and aluminum
powder, wherein the grain size of each component is 40 to 200 meshes.
Potassium sodium water glass is used as a bonding agent; the modulus is 2.4 to 2.7; and the Baume concentration is 36 to 39. After uniformly mixing the components of the
coating of the
electrode, adding the water glass and stirring uniformly to obtain a mixture, a
carbon steel covered electrode is manufactured by extruding the mixture on a core wire H08A; or a low-
alloy steel electrode is manufactured by extruding the mixture on a low-
alloy steel core wire. The electrode of the invention has the characteristics of high arc reignition,
slag detachability and all-position
welding adaptability, and low cost of electrode
raw material.