The invention discloses an oil removing and
rust removing agent used for treating a
metal surface. The oil removing and
rust removing agent comprises, by weight, 5-8 parts of
hydrochloric acid, 8-12 parts of
phosphoric acid, 3-6 parts of
oxalic acid, 3-5 parts of
tartaric acid, 2-4 parts of
citric acid, 2-4 parts of
nonionic surfactant, 2-4 parts of an anionic surfactant, 2-5 parts of
ethylene diamine tetraacetic acid, 1-2 parts of
sodium ethylenediamine tetramethylene
phosphonate, 2-4 parts of
thiourea, 1-2 parts of urotropine, 2-3 parts of
polyester modified
silicone oil, 2-4 parts of HEDP, 2-5 parts of
polyethylene glycol oleate and 70-100 parts of water. The oil removing and
rust removing agent can be used for conducting oil removing and rust removing on the
metal surface at the same time, safety and environment friendliness are achieved, over
etching and
hydrogen brittleness phenomena are not generated on a
metal matrix, irritant smells are avoided, the environment is not polluted, the property is stable, the preparing technology is simple, and the oil removing and rust removing agent can be widely used for oil removing and rust removing of paint sprayed workpieces,
powder coated workpieces,
electrophoresis workpieces, electroplated workpieces,
zinc oxide workpieces and the like.