Oil pumping rod steel and proces for producing super high strength oil pumping rod
An ultra-high-strength, sucker-rod steel technology is used in the manufacture of ultra-high-strength sucker-rods and iron-based alloy sucker-rod steels for oil production in deep oil wells, which can solve the problem of long sucker-rod production process, unstable product quality, etc. The problem of high manufacturing cost, to achieve the effect of good comprehensive mechanical properties, novel and reasonable process method, stable and reliable quality
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[0017] Below by embodiment, the present invention will be further described.
[0018] In an embodiment, the content of each component of the sucker rod steel is: (percentage by weight)
[0019] C: 0.27% Si: 0.30% Mn: 0.50% Cr: 0.90% Mo: 0.20% and the rest is Fe. Other smelting processes of sucker rod steel are the same as ordinary iron-based alloy sucker rod steel.
[0020] The process of manufacturing ultra-high-strength sucker rods is: use the above-mentioned sucker rod steel to make the sucker rod, the rod head and the rod body are integrated, no friction welding is required, only intermediate frequency quenching and high temperature tempering are performed on the sucker rod, no High-frequency quenching is required, and finally shot blasting is performed to manufacture ultra-high-strength sucker rods. The tensile strength of the produced sucker rods can reach more than 980Mpa.
[0021] The process parameters for intermediate frequency quenching of sucker rods are as follo...
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