A steel wire heat treatment process
A steel wire and process technology, applied in the field of steel wire heat treatment technology, can solve the problems of unfavorable heat treatment processing equipment temperature parameters, low performance of finished steel wire, large energy consumption, etc., and achieve good process performance and service performance, short process steps, and high heat treatment efficiency. Effect
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Embodiment 1
[0043]A steel wire heat treatment process, comprising the steps of:
[0044] Step 1: Finished product drawing. The equipment used includes a wire drawing machine and a take-up frame. The blank steel wire is drawn through the wire drawing machine to form a finished steel wire. Winding from bottom to top; such as figure 1 and figure 2 As shown, the take-up frame in this embodiment includes a take-up reel 1, which is cylindrical, and four take-up rods 2 are welded and fixed on the upper surface of the take-up reel 1, and the four take-up rods are fixed along the wire take-up The disc 1 is evenly distributed in the circumferential direction, and the finished steel wire 3 is wound around the four take-up rods 2 round by round.
[0045] Step 2: Annealing, put the take-up frame in step 1 and the finished steel wire wound on the take-up frame into the heating furnace and heat to 620°C, and the holding time is 0.5h;
[0046] Step Three: Combine image 3 As shown, the furnace is co...
Embodiment 7
[0055] The difference from the previous embodiment is that the cooling process in step 3 is divided into three stages. In the first stage, the temperature of the heating furnace is lowered to 420-710°C at a cooling rate of 60°C / h, so that the finished steel wire in the heating furnace Insulate at a temperature of 420-710°C for 0.3-0.5h; in the second stage, the heating furnace is cooled to 300-400°C at a cooling rate of 30°C / h, so that the finished steel wire in the heating furnace is kept at a temperature of 300-400°C Insulation for 0.1-0.3h; in the third stage, after the finished steel wire is kept at a temperature of 300-400°C for 0.1-0.3h, the temperature of the heating furnace is lowered to 100°C at a cooling rate of 15°C / h and kept for 15 minutes.
Embodiment 8
[0057] The difference from the previous embodiment is that the finished steel wire in step five needs to go through two normalizing processes, the heating temperature in the first normalizing process is 820-920°C, and the finished steel wire is kept at a temperature of 820-920°C for 1 hour , and then cooled to 300-400°C; the heating temperature in the second normalizing process is 620-720°C, and the finished steel wire is kept at a temperature of 620-720°C for 1 hour, and then cooled to 300-400°C.
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