SU1445856A1 - Installation for applying the coatings from metallic powder on cylindrical surfaces of articles - Google Patents

Abstract

The invention relates to powder metallurgy, in particular to devices for coating metal powder on cylindrical surfaces of products. The goal is to increase the adhesion strength of the coating material with the base and the dimensional accuracy of the coating. The engine 7 is turned on, rotating shaft 6 with right and left-hand thread sections 5, for which it is necessary, nuts made in flanging. 4, cause the movement of the deforming elements 1 towards each other. Before starting work, an HDTV inductor is turned on, which heats up the deformation zone of the product and the tape 19. When the deforming elements 1 move, before they meet, the metal tape 19 is pressed and the powder layer is formed on the product. After the length of time required to sinter the layer, the control circuit 22 sends a signal to the reverse circuit 21, after which the gear wheel 13 and the cylinder 15 with the products begin to rotate. "The plates 24 are fed into the heating zone, after which the powder coating process repeats. 1 il. g (L 15 H

Description

The invention relates to powder metallurgy, in particular, to installations for the application of metal powder coatings on cylindrical surfaces of articles.

The purpose of the invention is to increase the adhesion strength of the coating material with the base and the dimensional accuracy of the coating.

The drawing shows a diagram of an installation for coating metal pores on the cylindrical surfaces of products.

The installation contains deforming elements 1 installed with the possibility of plane-parallel movement along guides 2 by means of splines 3 and keyways (not shown). Deforming elements 1 are made with flanges 4, with right and left internal threads, into which pass screw sections, respectively left and right threads 5 of shaft 6 connected to motor 7. Shaft 6 with screw portions and motor 7 form the drive of elements. The engine 7 is equipped with a pulley 8 of a V-belt transmission 1i, which transmits rotation from the shaft of the engine 7 to the pulley 9 by a V-belt 10. The pulley 9 is fitted on the shaft 11 mounted rotatably in the slide guides 12. The gear wheel 13j is rigidly mounted on the shaft P and connected with the ring gear 1A, cut on the cylinder 15, installed with the possibility of angular rotation on the axis 16 in the sliding guide 17. Angular rotation is provided only counterclockwise; (not shown) installed between the pulley 9 and the shaft 11 contributes to the rotation of the pulley 9 on the shaft 11, thereby providing a sequence of plane-parallel movement of the deforming elements 1 and the system; 18 supplying products together with a metal tape 19 to the heating zone of the source 20 (TBA inductor).

To ensure the engine reversal 7 in the installation, use the reverse circuit 21, the control circuit 22 including the time relay and the start contact 23. On the tangent to the cylinder 15, a plate 24 is installed with a notch 25 to drop parts

The installation works as follows.

By pressing the start button (start-up KOrfTaKT 23), the engine 7 is turned, which rotates the shaft 6, consisting of sections with right and left threads 5, due to which the nuts made in the flanges 4 promote the movement of the deforming elements 1 towards towards each other to a friend. Before the start of the process, an HDTV inductor is turned on, which heats the deformation zone of the product and the tape 19. When the deforming elements 1 move, before they meet, the metal tape 19 is pressed and the material is formed on the products. A control circuit, including a time relay, after the time required for the sintering process has elapsed, gives a signal to the reverse circuit 21, which reverses the shaft 6, while the rotation is simultaneously transmitted to the pulley 9, the gear wheel 13 and the cylinder 15 on which products are installed. The products are fed over the plate 24 to the heating zone, after heating is performed, the time of which is processed by the time relay in the control circuit 22 (the time is taken into account jointly by supplying the part), the shaft 6 is repeatedly reversed by the motor 7 and the parts are crimped together with the powder tape by deforming 1. Repeating the process, successively applying powder tape on a series of products that, after applying a layer, fall out into the hole 25 made in the plate 24,

When using the proposed installation, as shown by the results of experimental studies, the adhesion strength of the metal tape with the base is 1.5-1.7 times due to increasing efforts to compress the tape around the product, and the productivity of the process increases by 1.3 times Compared to the use of: a known installation. At the same time, the accuracy of the size of the powder layer increases to 12–14 quality of accuracy (in the known device, the obtained products are characterized by an error — ovality, faceting, etc.).

Thus, the application of the proposed installation allows to increase the adhesion strength of the coating to the substrate, as well as to improve the dimensional accuracy of the coating.

Claims (1)

Invention Formula The installation of dp coating of metal powder on the cylindrical surfaces of products, containing deformed elements with a drive, a heating source and a system for supplying products to the heating zone, is only about increasing the adhesion strength of the coating material with the base and the dimensional accuracy of the coating; the drive of the deforming elements is made in the form of a screw transmission with right and left threads and connected to the product feed system T-linometer transmission, and the product supply system is made in the form of a gear and a cylinder with a gear profile on a generator, installed with a one-sided angular displacement capability, at. This deforming elements are installed with the possibility of plane-parallel movement.