DD155436A1 - METHOD AND DEVICE FOR COATING METALLIC SURFACES - Google Patents

Abstract

Method and device for coating metallic surfaces to reduce friction and wear, to improve the inlet of the components and to increase the reliability and service life. The coating of the surfaces is done with a rotating friction pin made of brass or other copper-containing alloys, using glycerine as a lubricant. Due to the rotation of the friction pin around its longitudinal axis, high contact pressures are achieved with small normal forces, which makes it possible to coat gray cast iron and high-alloyed steel materials without special lubricant additives.

Description

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Description of the invention

Title of the invention

Method and device for coating metallic surfaces

Field of application of the invention

The invention relates to a method for coating metallic surfaces to reduce friction and wear, to improve the inlet of the components and to increase the reliability and the service life and an apparatus for performing the method. The method can be applied where components are subject to friction stresses,

Characteristic of the known technical solutions Previously known from SU-PS 115 744 and from the literature rubbing copper or copper-containing alloys. The coating of rotationally symmetrical components takes place in this method by means of a rigid pin, which has an unfavorable effect on the formation of layers. Furthermore, it is not possible with this method to coat high alloyed steels or gray cast iron without special lubricant additives. When rubbed with a rigid pin is a surface contact, whereby it is not possible at small normal forces large

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To realize contact pressures, as they are necessary for the coating of gray cast iron or high-alloy steels.

Object of the invention

The aim of the invention is to provide a method for coating metallic surfaces, with which it is possible to coat high-alloyed steels or gray cast iron without special lubricant additives,

Essence of the invention

The invention has for its object to provide a method and an apparatus for coating of metallic surfaces, or which ensures a uniform coating to reduce friction and wear. According to the invention the object is achieved in that a uniform layer is applied to the component with a rotating friction pin made of brass or other copper-containing alloys using pure glycerol as a lubricant.

The friction pin simultaneously performs a rotational movement about its longitudinal axis and a translational movement with respect to the surface to be coated. Due to the rotation of the friction pin, only surface contact occurs between the workpiece surface and the friction pin, resulting in lower energy consumption, less heating of the surface and a lower coefficient of friction. Furthermore, with relatively small normal forces, high contact pressures of the friction pin can be realized. The high contact pressures make this possible , Components made of gray cast iron and high-alloyed steel materials without special lubricant additives to the glycerin to coat. When rubbed by means of a rotating friction pin, the process of selective solution, a main process of selective transfer, proceeds from _a

To carry out the method, a device is used both for the coating of rotationally symmetrical components on conventional lathes and for the coating of

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planar profile components can be used on!

The main advantage of the invention is that with little effort and avoidance of high costs, a uniform coating by the rotation of the friction pin takes place, as well as a coating; of gray cast iron or high-alloy steel materials is made possible.

embodiment

The invention will be explained below with reference to an embodiment and the accompanying drawings. Show it:

Figure 1: Arrangement of the device for coating rotationally symmetrical components

 Figure 2: dependence of the contact pressure of the normal force with rigid and rotating pin

With the device according to FIG. 1, rotationally symmetrical components can be coated on a conventional lathe. In this case, the component 1 to be coated is set in rotation via the chuck. The clamped in the receptacle 5 friction pin 2 is rotated via the shaft 3, which is driven by a separate motor 4, in rotation about its longitudinal axis About the mounted on the shaft 3 spring receptacle and on the shaft 4 axially movable receptacle 5 is the Contact pressure of the friction pin 2 set by the loading spring 6 The translational movement of the friction pin 2 via the feed unit of the lathe. During the rubbing, pure glycerin is supplied as the lubricant. By the rotation of the friction pin 2 in conjunction with the translational motion of the same, a uniformly coated surface is achieved. As a material for the friction pin come copper-containing alloys such. B, brass or bronze, for use.

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Fig. 2 shows the dependence of the contact pressure of the normal force at a rigid and rotating friction pin. The illustration clearly shows that large contact pressures can be achieved with the help of the rotating friction pin at low normal forces. This makes it possible, without the use of special lubricant additives to coat components made of high-alloy steels and gray cast iron ·

Claims (3)

22 6 24 6 Claim 1, Method and device for coating metallic surfaces by rubbing copper-containing alloys, characterized in that the spinning with the rotary pin, using glycerine as a lubricant, was carried out 2 «method according to item 1, characterized in that the friction pin simultaneously performs a rotational movement about its longitudinal axis and a translational movement with respect to the surface to be coated» 3 «Device for carrying out the method according to item 1 and 2, characterized in that the Reibstiftaufnähme (5) is arranged axially movable on the shaft (4) and via a loading spring (6) of the contact pressure of the friction pin (2) is regulated. For this og. ... pages drawings