Polishing agent, method and system for polishing inner runner of nickel base alloy workpiece

Abstract

The invention discloses a polishing agent, method and system for polishing an inner runner of a 3D-printed nickel base alloy workpiece. The method comprises the following steps that the polishing agent containing phosphoric acid, nitric acid, hydrochloric acid, hydrofluoric acid, ferric chloride hexahydrate and sulfosalicylic acid is prepared; the polishing agent is heated to 40-60 DEG C and then conveyed into the inner runner of the workpiece and keeps flowing at a certain speed so that the inner runner can be polished; and the polishing agent is discharged, and the workpiece is washed. Through the polishing agent, method and system for polishing the inner runner of the 3D-printed nickel base alloy workpiece, the surface smoothness of the inner runner of the 3D-printed nickel base alloy workpiece can be effectively improved, so that the inner runner becomes uniform and smooth; and compared with traditional polishing methods for the inner runner of the 3D-printed nickel base alloy workpiece, the polishing agent, the method and the system are better in polishing effect, more convenient and quicker.

Description

technical field [0001] The present invention relates to the chemical polishing of the inner flow channel of a 3D printed nickel-based alloy workpiece, in particular to a method for chemically polishing the inner flow channel of a 3D printed nickel-based alloy workpiece, and a method for chemically polishing a 3D printed nickel-based alloy workpiece A system of inner runners and a polishing reagent for chemically polishing the inner runners of 3D printed nickel-based alloy workpieces. Background technique [0002] Nickel-based alloy materials are widely used in chemical machinery, aerospace, ships and other fields due to their good comprehensive properties, high strength at high temperatures, and good oxidation and corrosion resistance. 3D printing is an emerging manufacturing process that can shape many structures that cannot be achieved by traditional machining. Among them, the application of 3D printed nickel-based alloy workpieces with complex inner runners in the aerosp...

AI Technical Summary

Problems solved by technology

The traditional mechanical polishing method cannot polish the inner runner, chemical polishing is one of the better inner runner polishing methods

The traditional chemical polishing method generally adopts immersion polishing, which completely immerses the workpiece in the chemical test solution. The system is relatively simple, but the polishing effect is not easy to control

The surface roughness of the original workpiece has a great influence on the chemical polishing effect. The degree of erosion by the test solution will be more severe in the high convex or concave position, which will cause serious potholes in the inner flow channel after polishing, and the polishing effect is not ideal. , for alloy workpieces with complex inner runner shapes, the polishing effect is even worse

Nickel-based alloy workpieces have a certain corrosion resistance due to the material itself, and the traditional chemical polishing reagents have no obvious polishing effect on it.

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