CS256064B1 - Preparation for welding copper and its alloys to rotary steel parts - Google Patents

Abstract

The solution relates to a device for welding copper and its alloys onto rotary steel components made of alloyed steels, by the mechanized TIG method in a protective atmosphere of inert gases. It consists in the fact that a rotary component is inserted through the central hole onto a centering mandrel clamped in a rotating clamping head. At least from the lead-in side of the welding of the rotary component, a rotary insert is inserted through its central hole onto the centering mandrel, which has the same outer diameter as the rotary component. The free end of the centering mandrel is placed in a pointed tip, on which a pressure member is clamped,!;which keeps the rotary component together with the rotary inserts tightly together.

Description

256064

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composition for surfacing and its alloys for rotationally steel components, in particular alloyed steel components treated with the T1G method in an inert gas protective atmosphere.

So far, the welding of the media and its alloys has been made by a steel-working part of a piston, piston, piston, etc., on a welding machine, clamping of the rotating member into the jaws and tip tip. The rotary part intended for naváraniusa was made with the addition of 5 to 10 mm of the working surface intended for welding, which was removed after welding. The electric arc was ignited on the base material of the rotating rotating component, which was rotated at the welding speed, the welding torch was in the direction of the axis of the component, and the additional material honey or bronze was added mechanically to the electrical means. it attracts, which melted away and gradually wound in the shape of a spiral. The alloyed alloy parts in the refined state were still coated with a nickel interlayer of 5 to 40 μΐη prior to welding to prevent the formation of undercrack cracks, cracks and diffusion flows of the nickel interlayer by its thickness and quality to prevent direct adherence of molten copper or bronze. of a weld metal with a surface layer, in particular flowing along the boundary and thus not allowing the formation of cracks, a crack of diffuse leaks that reduce the mechanical and fatigue strength of the component.

The greatest danger of melting this nickel interlayer and the formation of heat is the burning of the electric arc. The disadvantage of the known coating of the medium and its castings on the rotating steel component is that the technological additions to the length of the material and represent considerable workmanship. The application of the nickel interlayer increases the total cost of production by about 50, while the results do not provide the desired quality of the joint as the small and porous layer does not prevent the media and its alloys from contacting the steel. Conversely, a large layer causes a change in the chemical composition of the weld layer and thus a change in the mechanical and sliding properties of the weld.

The above drawbacks are avoided by the preparation of the medium and its alloys for rotating steel components consisting of a rotating nipple in which a central point is clamped, the other end of which is clamped in a pointed tip, wherein a rotating element according to the invention is slid on its center hole. the essence of which is to rotate the center piece of the rotating pad, which has an outer diameter equal to that of the rotating member, at least from the leading side of the retrofit component. A pinch member is disposed from the tip tip side. An advantage of the preparation for the welding of media and alloys to rotary steel parts of the invention is that it enables ignition of the electric arc on the rotating plate and reduces the functioning of the flat rotary component, thereby allowing an increased current load at the start and thus achieving the required heat input. . The preparation also has the function of quickly heating it with its own welding source without an auxiliary heater in alloyed steel components.

The preparation allows heat transfer from the rotating pad to the welded part. The centering pin with the rotating pad from the finishing side allows the necessary discharge of excess heat from the welding spot and its accumulation in the component to maintain the optimum temperature during the ramming process. Another advantage is the simple preparation, setting up and operation of the welding, the possibility of using its own welding source for the necessary preheating of alloyed steel parts, saving of auxiliary heating sources and energy and ensuring a suitable metallurgical-elastic welding process preventing the formation of cracks and cracks in the base material and without the use of a nickel interlayer during the entire welding process.

In the accompanying drawing, an example of an embodiment of a composition for welding copper and its alloys to a rotary steel component according to the invention is shown, wherein in FIG. 1 this preparation is drawn in a partial section with two rotating pads positioned on both sides of the rotating are-amounts. Fig. 2 is a partial cross-sectional view of the formulation with a single-turret insertion side and a divided centering pin.

The preparation for the rolling of the media and its castings on the rotating steel parts according to FIG. 1 consists of a rotating clamping head 6 in which the centering pin 4 is clamped. On this centering mandrel 4, a rotating insert 1 is inserted by its central opening. a tightly attached rotary member 2 is pushed through its central opening on the spindle mandrel 4 and a second rotary tab 3 is slidly attached to the top of the rotating member 2 by its central opening on the centering mandrel 4. Von-kajpf. the diameter of the rotating pad 1 of the second rotating tab 3 is the same as the outer diameter of the rotating member 2. The tight junction of the rotating pad 1 and the second rotating pad 3 with the rotating component 2 ensures that the pressing member 5 is in contact with it to a centering pin 4 through a center hole that extends through the opening formed in the pressure member 5.

The welded steel component 2 is relatively small in this case. The length and weight of the second rotary pad 3 are selected higher relative to the rotating pad 1 due to the increased heat accumulation when terminating the welding process. Figure 2 only uses a single rotating pad

Claims (3)

SUBJECT A composition for welding media and its alloys to rotary steel components, comprising a rotating clamping head in which a centering mandrel is clamped, the other end of which is clamped at the tip of the centering mandrel, with its center bore sliding a rotating component therewith. that on this centering mandrel (4), at least from the leading side of the welding of the rotating component (2), a rotary shank (1) having its outer diameter equal to the rotating component (2) is pushed through its central bore; member (5).