Preparation method of fracture-resistant steel rope bolt
A steel cable bolt and anti-fracture technology, applied in the field of preparation of anti-fracture cable bolts, can solve the problems of fracture or crack, formation of accident sources, easy rust and corrosion, etc., achieve good plasticity, improve tensile strength, and bolt accuracy. high effect
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[0021] The present invention will be further described in conjunction with the following examples:
[0022] The preparation method of the anti-fracture steel cable bolt, the processing steps include:
[0023] a. Casting rod material, the weight percentage of the chemical composition in the rod material blank is: 0.132%≤C≤0.260%, 0.62%≤Si≤1.30%, 0.25%≤Mn≤0.35%, 0.010%≤P≤0.030%, 0.010% ≤S≤0.030%, 1.10%≤Cr≤1.50%, trace ≤B≤0.0018%, 0.012%≤Cu≤0.030%, the balance is iron and unavoidable impurities;
[0024] b. The rod material after casting is pickled; according to the wire diameter requirements of the bolt, it is drawn to make the rod material shrink to the wire diameter required by the bolt; the rod material after shrinking the wire diameter Cut to the length required by the bolt, put the cut rod material into the mold cavity covered with plant ash at room temperature, and use the upsetting force to form the rod material into the head and rod size required by the bolt; use a prec...
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