| abstract |
The invention discloses a quality control detection method and application of a hot-rolled high-carbon wire rod for a high-strength stranded wire, which comprises the following steps: firstly, cooling a hot-rolled wire rod on a C-shaped hook to less than 50 ℃, cutting off a non-cold section at the head of the wire rod on a rolling line, and then cutting a sample strip, wherein the length of the sample strip is less than or equal to 500 mm; straightening the wire rod sample strip by adopting a straightening machine, then placing the wire rod sample strip into a heating furnace for artificial aging at the aging temperature of 150 +/-10 ℃ for 3 +/-0.5 h, taking out the sample after the aging is finished, and cooling the sample to room temperature in static air; and performing a tensile test on the prepared sample strip on a mechanical tensile testing machine, detecting the tensile strength and the section shrinkage rate after breaking, judging the sample with the tensile strength within the standard range of the wire rod, and finally obtaining the corresponding grade of the reticular carbide. The method can quickly and accurately detect the highest-grade net carbide in the wire rod and prevent and control the wire rod with the overproof grade from flowing out. |