Novel sucker rod coupling and production process thereof
A sucker rod coupling, a new type of technology, applied in the direction of drill pipe, drilling equipment, earthwork drilling and production, etc., can solve the problems of coating holes, sucker rod coupling and the inner wall of the oil pipe, wear through the oil pipe, etc., to achieve good Anti-friction performance and wear resistance performance, the effect of achieving friction reduction and wear resistance performance, and improving wear resistance performance
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[0049] The preparation process of the novel sucker rod coupling of the present invention includes the following steps:
[0050] Step 1: Clean the oil stains on the outer surface of the coupling blank and blow dry;
[0051] Step 2: Perform sandblasting, rust removal, roughening, and activation on the outer surface of the coupling blank in sequence, and then set aside;
[0052] Step three, uniformly mixing the hard tungsten carbide (WC) particles and the copper-based alloy powder according to the determined ratio by ball milling;
[0053] Step 4: Prepare a layer of alloy coating with a thickness of 0.25 to 1.00 mm on the surface of the coupling blank according to the above technical scheme using a pre-bonding process;
[0054] Step 5: Dry the pre-bonded and coated couplings, and then use intermediate frequency induction remelting equipment for remelting treatment;
[0055] Step 6: Perform external polishing on the cooled coupling, chamfer and smooth the junction of the external surface and...
Example Embodiment
[0059] Example one
[0060] The copper-based alloy composite coating 2 consisting of 10% by mass hard tungsten carbide (WC) particles and 90% by mass copper-based alloy coating; the copper-based alloy composite coating 2 extends to the joint The outer end surface of the hoop base body is transitioned with the outer end surface by a circular arc chamfer, and its length is 15mm. The outer surface of the copper-based alloy composite coating 2 is provided with uniformly distributed hemispherical pits 5 with a diameter of 0.05 mm and a depth of 0.06 mm; the grain size of the hard tungsten carbide (WC) particles is 2 μm, and the hard carbonized Tungsten (WC) particles are added to the copper-based alloy powder by dry ball milling.
[0061] The central outer surface of the body 1 is provided with a ring-shaped nickel-based alloy coating 3; both ends of the nickel-based alloy coating 3 are respectively provided with the copper-based alloy composite coating 2 distributed in a ring shape. ...
Example Embodiment
[0062] Example two
[0063] A copper-based alloy composite coating 2 consisting of 25% by mass hard tungsten carbide (WC) particles and 75% by mass copper-based alloy coating; the copper-based alloy composite coating 2 extends to the joint The outer end surface of the hoop base body is transitioned with the outer end surface by a circular arc chamfer, and its length is 19mm. The outer surface of the copper-based alloy composite coating 2 is provided with uniformly distributed hemispherical pits 5 with a diameter of 0.25 mm and a depth of 0.09 mm; the grain size of the hard tungsten carbide (WC) particles is 7 μm, and the hard carbonized Tungsten (WC) particles are added to the copper-based alloy powder by dry ball milling.
[0064] The central outer surface of the body 1 is provided with a ring-shaped nickel-based alloy coating 3; both ends of the nickel-based alloy coating 3 are respectively provided with the copper-based alloy composite coating 2 distributed in a ring shape. Th...
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