Electric arc spraying device

Abstract

The invention discloses an electric arc spraying device, and belongs to the technical field of electric arc spraying. The electric arc spraying device comprises a wire feeding device and a gas sourceand further comprises a guide frame, wherein the guide frame comprises first arc-shaped sliding rods, second arc-shaped sliding rods and a supporting screw rod. The electric arc spraying device further comprises an adjusting device which comprises a connecting ring, a screw sleeve, connecting rods, guide blocks corresponding to the connecting rods in a one-to-one mode, the screw sleeve is matchedwith the supporting screw rod and is rotatably connected to the connecting ring, the connecting ring is connected to the supporting screw rod in a sleeve mode, one end of each connecting rod is hingedto the corresponding guide block, and the other ends of the connecting rods is hinged to the connecting ring, and the guide blocks are slidably arranged on the first arc-shaped sliding rods and the second arc-shaped sliding rods; the wire feeding device is used for conveying wires and enabling arc striking points of the wires to be located in an arc center of the first arc-shaped sliding rods andthe second arc-shaped sliding rods. According to the electric arc spraying device, a spraying range can be adjusted when a distance between air nozzles and a workpiece is fixed; and molten wires canbe fully atomized and an influence of arc position deviation, caused by deformation of the wires, on spraying effect is reduced.

Description

technical field [0001] The invention relates to the technical field of arc spraying, in particular to an arc spraying device. Background technique [0002] As an important branch of thermal spraying, arc spraying technology is widely used to prepare coatings with various properties such as wear resistance and corrosion resistance, so as to realize the dimensional recovery and surface modification of mechanical parts, and even for the field of three-dimensional rapid prototyping of materials . Arc spraying technology originated in the 1920s. It is a spraying process in which two metal wires are energized to start an arc, the wire itself is rapidly melted, and the molten droplets are accelerated through high-speed airflow atomization. This arc spraying technology has significant advantages such as high quality, high efficiency, and low cost. For example, the arc spraying efficiency using alloy wire as the spraying material can reach 40kg / h, which is more than 4 times that of ...

AI Technical Summary

Problems solved by technology

[0005] The invention provides an arc spraying device, which can solve the problem that the arc spraying device in the prior art cannot effectively adjust the spraying range, and the molten metal wire cannot be effectively atomized due to the deformation of the wire.

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