Method for quenching slip inserts

Abstract

The invention relates to a method for quenching slip inserts, which comprises the following steps: 1)producing a steel ring through a forming machine or a die, and coaxially arranging several same annular slip inserts at interval along the radial direction of the outer rim of the steel ring; 2)coating a quenching medium to several annular slip inserts, respectively filling or smearing an antiseepage carbon material on upper transverse plane and lower transverse plane of the steel ring and the bore of the steel ring; 3)placing the steel ring in a quenching furnace and quenching the slip inserts; 4)removing the residual antiseepage carbon material, and respectively cutting the inner wall of the steel ring and the upper transverse plane and lower transverse plane of the steel ring; and 5)dividing the cut steel ring into equal arc blocks along the radial direction, wherein the arc block is the final slip inserts finished product. According to the invention, the thickness and height balance of the slip body can be made by prefabricating the steel ring, the anti-carburizing treatment is carried out on the balance, the balance is removed, real slip body is exposed, unnecessary carburizing of the slips body during the quenching process can be avoided, slips body intensity can be increased, and the influence for removal of an anti-carburizing layer to the acutance of the slip inserts can be reduced.

Description

technical field [0001] The invention belongs to the field of iron and steel metallurgy and relates to slips, in particular to a method for quenching slips. Background technique [0002] Whether it is drilling or hydraulic transmission drilling rig, slips are an important part of it. Steel teeth are usually made on the wall of such slips, which are usually called slip teeth. Slips themselves need to have a certain degree of wear resistance. On this basis, the slips also need to have a certain degree of toughness and strength. The slips and the slip body after mechanical forming are usually made in one body, and the strength of the slips is often If the specified strength cannot be reached, it needs to be quenched to improve the strength of the slips. Before quenching, the slips need to be coated with quenching medium, and the slip body should be coated with anti-carburizing material, so as to ensure that the slip body and The respective functional properties of Kawa teeth. ...

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