The invention belongs to the technical field of hardware tools, and particularly relates to a surface treatment method for a hard
alloy circular saw blade. The surface treatment method comprises the following steps that 1, surface oil removal is conducted, specifically, the
alloy circular saw blade is soaked in a
degreasing agent and then transferred into clear water to be cleaned; 2, surface rustremoval is conducted, specifically, the
alloy circular saw blade is soaked in a
rust removal solution and then sequentially transferred into a neutralizer and clear water to be cleaned; 3, surface phosphating is conducted, specifically, the alloy circular saw blade is soaked in a phosphating solution and then transferred into clear water to be cleaned, and finally
drying is conducted; and 4, surface painting is conducted, specifically, the alloy circular saw blade is fixed to a paint
coating device, and the surface of the alloy circular saw blade is coated with anti-
corrosion paint. When thesurface of the alloy circular saw blade is coated with the paint, the paint
coating range can be accurately controlled, paint particles are prevented from being attached to saw tooth parts, the paintcoating the surface of the alloy circular saw blade can be uniformly dispersed, paint accumulation is avoided, and the
surface flatness of the alloy circular saw blade is improved.