Quenching method for deformed steel bars
A technology of rebar and quenching agent, which is applied in the field of heat treatment, can solve the problems that mechanical properties cannot meet the requirements, the surface oxide scale is transformed into rust, and the performance and use of rebar are affected.
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Embodiment 1
[0016] The quenching method step of threaded steel of the present invention is as follows:
[0017] After heating the rebar to 970°C, keep it warm for 1.5 hours; then immerse it in the quenching agent for quenching, and the quenching time is 4s. Wherein, the temperature of the quenching agent is 45°C.
[0018] The formula of the quenching agent is: industrial sodium chloride: 6kg; sodium nitrate: 1kg; potassium sulfate: 1.5kg, distilled water: 91.5kg.
Embodiment 2
[0020] The quenching method step of threaded steel of the present invention is as follows:
[0021] After heating the rebar to 960°C, keep it warm for 1 hour; then immerse it in the quenching agent for quenching, and the quenching time is 4s. Wherein, the temperature of the quenching agent is 50°C.
[0022] The formula of the quenching agent is: industrial sodium chloride: 5kg; sodium nitrate: 1kg; potassium sulfate: 2kg, distilled water: 92kg.
Embodiment 3
[0024] The quenching method step of threaded steel of the present invention is as follows:
[0025] After heating the rebar to 980°C, keep it warm for 2 hours; then immerse it in the quenching agent for quenching, and the quenching time is 3s. Wherein, the temperature of the quenching agent is 40°C.
[0026] The formula of the quenching agent is: industrial sodium chloride: 6kg; sodium nitrate: 1kg; potassium sulfate: 1kg, distilled water: 92kg.
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