The invention discloses a process for producing a high-nodularity
fastener wire rod. The process comprises the following steps: (1) selecting materials, namely selecting a steel wire with the model of SWRCH22A; (2) drawing, namely drawing the steel wire by adopting a drawing
machine, wherein the compression rate is more than or equal to 50 percent; (3) performing spheroidizing annealing, namely lifting the steel wire into an
atmosphere protection furnace, adding a protective
atmosphere into the
atmosphere protection furnace, heating the steel wire to a temperature which is 20-30 DEG C higher than the
austenite transformation temperature, preserving the heat for 4-6 hours, slowly cooling to a temperature which is 20-30 DEG C lower than the
austenite transformation temperature at a rate of 10 DEG C per hour, preserving the heat for 3-4 hours, and performing furnace cooling until the product is discharged out of the furnace; and (4) performing precision drawing, namely drawing the steel wire again by adopting the drawing
machine, wherein the compression rate is less than or equal to 10 percent. The treated steel wire has the grain size of more than or equal to 10 grades, the grains are uniform, the nodulizing grade is more than or equal to 5, the nodulizing rate is high, the
pearlite is uniform in distribution, and the
wire rod does not have abnormal tissues, has high plastic deformation capacity and is suitable for subsequent plastic forming, and the
wire rod with excellent size and surface is obtained.