Nickel-based coating on surface of sucker rod and preparation method of nickel-based coating

Abstract

The invention discloses a nickel-based coating on the surface of a sucker rod and a preparation method of the nickel-based coating. The nickel-based coating is mainly prepared from raw materials in aproper ratio, and one coating with high performance, wear resistance and corrosion resistance is obtained on the surface of the sucker rod with an induction cladding technology. The specific implementation method comprises following steps: (1), surface pretreatment of a base material; (2), preforming of the nickel-based coating; (3), drying treatment; (4), preparation of an induction cladding coating. The nickel-based coating forms good metallurgical bonding at a coating interface, and the coating structure is refined and overcomes defects of obvious cracks, gaps and the like. Microhardness from the base material to the coating is obviously improved, coating hardness value is about 5 times higher than that of the base material, wear extent and wear coefficient of the coating are far lowerthan those of the base material under the same condition, so that the service life of the sucker rod is substantially prolonged. Not only can high-performance coating be obtained, but also the methodhas the advantages of low production cost, high efficiency and environment-friendly production process and facilitates realization of industrialization.

Description

technical field [0001] The invention relates to the field of surface modification of a sucker rod base material in the petroleum industry, in particular to a nickel coating on the surface of a sucker rod and a preparation method thereof. Background technique [0002] With the continuous exploitation of oil and gas resources, shallow oil and gas resources are gradually depleted, and the proportion of deep oil and gas resources development in oil and gas production continues to increase, and the oil recovery method is mainly based on mechanical oil recovery. As one of the most important devices for mechanical oil recovery, the safety of the sucker rod in service and the stability of product quality have a crucial impact on the exploitation of oil and gas resources. However, during the use of drilling and production tools, they often have to withstand various working conditions such as pulling, shearing, friction and corrosion, and environmental wear and corrosion factors, whic...

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Problems solved by technology

[0004] Patent CN101012560A (Xiong Linyong, method for strengthening the surface of train rails and wheels with induction heating and melting alloy technology) provides a set of methods for the induction cladding and restrengthening of alloy high-strength steels, but this material is mainly for rails and wheels. The research on grinding performance does not consider the corrosion resistance of materials; patent CN107012461A (Meng Huimin; Sun Guozheng; Gan Peiyuan; Yu Zeqin; Hu Ge, a preparation method of a high corrosion-resistant nickel-based alloy coating) provides a The surface coating super-audio frequency induction heating cladding method involves the preparation of high corrosion-resistant nickel-based alloys in the environment of high-acid oil and gas fields. The cladding current of this method is as high as 1000-1300A, the cladding heat output is large, and the heat-affected zone of the base material increases, greatly reducing substrate performance

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