The invention discloses a production process for a tiny chamfering special-shaped line for precision products, comprising the following steps: (1)
material selection: selecting a carbon structural steel material which contains the following chemical components in
mass percent: 0.08-0.11% of C, 0.20-0.29% of Si, 0.35-0.45% of Mn, 0.020-0.034% of P, 0.028-0.038% of S and the balance of Fe; (2) spheroidizing annealing: putting the carbon structural steel material into an
atmosphere protecting furnace, wherein protective
atmosphere is added to the
atmosphere protecting furnace, heating to the temperature of 20-30 DEG C higher than an
austenite transformation temperature, preserving heat for 4-6 hours, then slowly cooling to the temperature of 20-30 DEG C lower than the
austenite transformation temperature at the rate of 10 DEG C / h, preserving heat for 3-4 hours, and then cooling together with the furnace until being delivered out; and (3) carrying out cold drawing. A
wire rod produced by adopting the production process has relatively high plastic deformation capability, grains of an annealed structure are uniform, no
abnormal structure exists, a product angle of chamfer is less than or equal to 0.15mm, and the
wire rod can meet various use requirements of clients. Various performances of the product are obviously prior to current like products on the market, and therefore, the product has excellent market prospects and can create considerable
economic benefits for companies.