DE2522589A1 - ELECTRODE WIRE AND PROCEDURE FOR ITS MANUFACTURING - Google Patents

Description

Institut elektroswarki imeni E. 0. Patona Äkademii Ilauk U'.crainsicoj büß,
Kiev / USSH

5 22 5ö9.2 P 61

3K / Me

ELECTRODELfDRAIfJ? UlTD VERi ¹ AHREl-I TO HIS

5 ¹ DONE

The present invention relates to welding technology and more precisely to an electrode wire, which consists of a metallic base material and a composition of aggregates as well as the method of making this wire.

The invention is expediently used for automatic and semi-automatic welding and build-up welding using consumable and non-consumable electrodes, preferably in protective gas medium, used to make constructions from various metals and alloys. In addition, the invention in the form of aggregate material when soldering products verv: will end.

It is known an electrode wire made of metallic

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Base material and a composition of aggregates ordered, with the basic material in the met aiii ropes, essentially Along the surface line, grooves for receiving the composition of aggregates are made (see article by L. Bustedb "Electrode wire for automatic arc welding", trade journal "Autogenous welding technology", 1935, No. 11, pp. 11 to 17).

The structure of the known wire sees the presence in the metallic base material of external grooves with a Width, which increases as you get closer to the side surface of the wire. In fact, the grooves have the i'Orm in cross-section of a triangle, one point of which is in the body of the wire.

Such a wire structure does not ensure reliable adhesion of the aggregate to the metallic base material. Therefore solves when the wire is unwound and when it is wound onto spools or wire bundles and when the wire is pushed through with flexible I-guide channels and power-supplying mouthpieces a welding system removes the aggregate at individual points from the metallic base material. Uneven feed of aggregate has the instability of the welding process and follow-ii -h also result in weld defects. In addition, the falling out aggregate ducts and power supplying mouthpieces, so that they often have to be replaced.

Due to the large groove width on the surface of such a wire, the contact area of the wire with the current

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feeding mouthpiece is noticeably lower, which affects the stability of the welding process. Owns for the same reason the scanned wire has an increased ability to absorb moisture, which also results in the formation of porosity in the seams.

A method for manufacturing welding wire is also known, which by plastic deformation the forming of substantially longitudinal grooves on the wire side surface and subsequent filling of the same with aggregates provides.

As a result of the conical shape of the working part of the tool, which forms the longitudinal grooves, and those occurring here If the metal is shortened transversely, the grooves produced have a large opening angle, which means that they cannot be reliably held in place of the aggregates in the grooves, especially when bending the wire during the preparatory operations and welding is guaranteed.

Because of the falling out of the aggregates, the closing the grooves are made more difficult by subsequent drawing of the wire, as the aggregate usually has emery properties and if it gets into the lubricant, it causes the wire to tear.

It is the object of the invention to create an electrode wire, the design of which prevents the aggregates from falling out prevents from the grooves, increases the contact area of the wire with the current-carrying dog piece and the

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Hygroscopicity of the wire decreased, as well as a method to manufacture this wire using such a technological operation that makes it possible to to reduce the opening angle of the groove and thereby the reliable retention of the aggregates in it.

The task at hand is created by creating an electrode wire solved, which consists of a metallic base material and a composition of aggregates, in the case of the metallic Base material, running essentially along the surface line, grooves to accommodate the composition of aggregates and in the case of the invention the cross-section of each groove consists of a geometrical figure that narrows towards the side face of the wire.

The main advantage of a wire made in this way is that in the grooves where the width on the outer surface of the Wire is less than the width in the inner part, the falling out of the aggregate when bending the wire or when Pushing the same through guide channels of welding systems is prevented.

Ss are positive properties compared to known patterns this wire that the contact area of the wire with the current-feeding dog piece increases and the susceptibility to moisture s absorption by reducing the groove width on the wire surface becomes less.

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Conveniently, each groove is substantially in cross-section represents a trapezoid, the smaller baseline of which is on the Side face of the wire is located.

All the grooves can also be designed so that their cross-section each represents a triangle, the tip of which is on the side face of the wire.

Bending the wire will pull the sections apart the most and compressed, which are close to the wire surface. Therefore it is an additional condition for reliable retention of the aggregate in the grooves, that the latter is expediently designed; that their depth equals 0.3 to 0.7 of the wire radius and their width is equal to 0.3 "to 0.8 of the wire radius.

-2ε wei use a groove depth of 0.3 of the wire radius if the wire continues to be bent through an angle of at least 130 ° during operation. When the bending angle is in the range from 150 to 90 °, the Aiiien are executed with a depth which is equal to 0.4 to 0.6 of the wire radius. In the case of bending angles less than 90 °, the grooves must be made with a depth Many marriage is equal to 0, -γ of the wire radius. Another enlargement the depth of the groove is inexpedient because of the wire cross-section weakened and the technology is reduced in wire production. With a groove width in the wire body, which is less than 0.3 of the wire radius will be the long one of the aggregates accommodated in the groove is significantly reduced. If the width of the groove in the wire body is greater than

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0.8 of the wire radius, a certain amount of aggregates can be used fall out.

Good production-ready welding properties of the wire To obtain, the total area of the groove cross-sections can be 0.05 to 0.3 of the wire cross-section.

The size criteria in choosing this ratio, which flat

Groove factor K , on the one hand, the lack of a corresponding quantity of aggregate, which is in most cases insufficient at K = 0.05, and on the other hand the possibility of industrial production of the wire, which is significantly more difficult at K = 0.3 .

Mainly ionizing components when introduced into the wire must be grounded, the groove area factor K is selected in the range from 0.05 "to 0.07. If in the wire, for example jointly ionizing and slag-forming components need to be introduced, K is chosen in the range from 0.07 to 0.20.

In cases in which ionizing, slag-forming, Gas-forming, calming, alloying and other components are introduced into the wire, becomes the groove area factor K chosen in the range from 0.2 to 0.3.

According to the invention, the object set is also thereby achieved solved that in the process, which by plastic deformation

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the shaping τοπ. substantially longitudinal grooves on the Side face of the wire and the subsequent filling of the same Provides with aggregate before filling the grooves with Aggregates the wire is compressed in the radial direction.

The inventive method makes it possible thanks to the additional Work / course in which the wire moves in a radial direction

is compressed to reduce the opening angle of the groove and thereby the reliable retention of the aggregate ensure in the grooves.

The wire is expediently subjected to a drawing process after the grooves have been filled with aggregate until the grooves are obtained whose cross-section has a geometrical figure that narrows towards the side face of the wire.

In the following, the invention is illustrated by a detailed description of a specific exemplary embodiment and with the aid of the enclosed Drawings explained; it shows

Fig. 1

the overall view of one of the embodiments of the invention Electrode wire,

Fig. 2

a section along line II-II of Fig. 1,

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Fig. 3 to Cross-sections of other embodiments of the invention Electrode wire,

3 shows the basic scheme of the technological manufacturing process of the electrode wire according to the invention,

9 shows a cross section of the electrode wire according to the invention before forming the grooves,

Fig. 10 is a section along line X-X of Fig. 8, which shows an embodiment of the wire according to the invention with ziirei grooves of the side face before the wire is compressed in the radial direction,

11 shows a cross section through an embodiment of the invention Electrode wire with three grooves on the side surface before the wire is compressed in the radial direction,

FIG. 12 shows a section along line XII-XII of FIG. 8, which shows an embodiment of the electrode wire according to the invention with two Shows grooves on the side surface after compression of the wire in radial direction,

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Pig. 13 shows a cross section through an embodiment of the invention Electrode wire with three grooves on the side surface after the wire has been compressed in a radial direction,

14 shows a section along line XIV-XIV of FIG. 8, which shows a Embodiment of the electrode wire according to the invention with two grooves on its side surface which: aic aggregates are filled, aeigu,

15 shows a cross section of an embodiment of the invention Electrode wire with three grooves on its side surface, which are filled with aggregates,

16 shows a section along line XVI-XVI of FIG. 8, which shows an embodiment shows the electrode wire according to the invention with zxvei grooves on its side surface after drawing,

17 shows a cross section of an embodiment of the invention Electrode wire with three grooves on its side surface after pulling,

FIG. 18 shows a section along line XVIII-XVIII of FIG. 8, v / which one

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Embodiment of the electrode wire according to the invention with two grooves on its side surface after repeated pulling.

The electrode wire 1 according to the invention (FIGS. 1 to 18) consists of a metallic base material and a composition Aggregates 2 (Fig. 1 to 7 "and. 14 to 18). In the metallic Base material are made, essentially along the wire jacket line, grooves 3 for receiving the aggregates 2.

According to the invention, each groove 3 represents a geometric figure in cross section, which extends in the direction of the side surface of the electrode wire is narrowed.

Fig.i and 2 show an embodiment of the grooves 3> which are essentially trapezoidal in cross section. The smaller base line of the trapezoid is on the side face of the wire.

The grooves 3 shown in FIG. 3 essentially have triangular cross-section. One point of the triangle lies on the side of the wire.

The grooves 3 shown in FIG. 4 have a "teardrop-shaped" Cross section that narrows towards the side face of the wire.

When the wire is bent, the sections that are on the

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closest to the wire surface, most pulled apart and squeezed. Therefore it is necessary in order for the aggregates to be reliably held in the wire are provided that grooves are provided, their depth equal to 0.3 to 0.7 of the wire radius and its width in the wire body ^ .er is equal to 0.3 to 0.8 of the wire radius.

About high production-ready welding properties of the wire to obtain, the total area of the groove cross-sections is ü, G5 to 0.3 of the wire cross-section.

The electrode wire according to the invention can be used with a as well as with several grooves. However, it is a prerequisite for its ability to work that the total area the grooves cross sections 0.05 to 0.3 of the total wire r cross-section matters.

It is expedient if a ratio of the total area of the groove cross-sections to the total wire cross-section of 0.05 it is necessary that the wire has one or two grooves. On the other hand, if this ratio is 0.15 to 0.25 should be, the wire is to be designed with two or three or three or four grooves.

Fig. 1 to 4- show cross-sections of wire embodiments, which contain two grooves.

From Jj ¹ Xg. 5, 6 and 7 are cross-sections of wire guide

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forms can be seen, one, three or four Grooves included.

To get the aggregates evenly across the cross-section distribute, the grooves are arranged symmetrically.

The method according to the invention for manufacturing electrode wire consists of forming by plastic deformation of longitudinal grooves 3 on the side surface of the wire and the subsequent filling of the same with aggregates 2.

According to the invention, the cross-section in the form of a geometric Figure executed grooves, which narrows in the direction of the side surface of the wire, by radial compression of the wire is formed before the grooves are filled with the aggregates 2.

The main operations of the technological process when manufacturing electrode wire according to the invention are illustrated by FIG. 8. The wire 1 shown in FIG. 9 with a round cross section comes from an unwinding device which consists of a trestle 4- (Fig. 8) and a rotating drum 5, and is about Straightening rollers 6 passed into a roller frame, v / o the grooves 3 are formed on the wire with the aid of rollers 7.

After emerging from the roller frame of the wire 1, its Cross-section now, for example, the form shown in FIG. 10 (embodiment of the wire with two grooves) or the one from

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Fig. 11 visible form (embodiment of the wire with three grooves), this wire 1, when passing through, for example, a drawing ring 8 (FIG. 8) in the radial direction pressed together.

After compression, the cross-section of the wire 1 has a round shape while the grooves 3 i ^m cross section having a geometric shape which narrows in the direction of the side surface of the wire. 1

This is illustrated by Fig. 12, v / o an embodiment of the wire is depicted with two grooves, and is confirmed by Figure 13 which shows an embodiment of the wire having three grooves.

After performing the operations mentioned, the wire is in a cleaning unit 9 (Fig. 8) to remove the technological Lubricant passed.

The wire cleaned from the technological lubricant enters a pressing device 10, where the grooves 3 are pressurized with a paste-like additive of predetermined composition be filled.

The wire 1, the grooves 3 of which are filled with the aggregates 2 14 and 15 can be seen from FIGS.

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The technological process of pulling the grooves is ongoing analogous to the process of shaping the electrodes by pressing.

After filling the grooves 3 with the aggregates from the surface of the wire 1 the remainder of the aggregates for example, by guiding the wire 1 through the calibrated opening in a steel mouthpiece 11 (FIG. 8). Farther the wire is passed into a drying oven 12.

The wire 1, together with the aggregates, is placed on a drawbench 13 several times to remove the moisture Pull underneath and wound up in a device specially designed for this purpose.

16 and 17 are embodiments of the wire 1 according to the drawing can be seen, through which the opening angle of the grooves 3 almost reaches the ITull value.

From Fig. 18 the cross section of the wire can be seen after repeated pulling, which complete closing of the groove 3 guaranteed.

The schematically described production process of the electrode wire should not necessarily be continuous in different Sections of the technological process. For example, the wire can be wound up in individual storage devices in order to process it further on parallel streets etc.

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The electrode wire according to the invention described above has high welding properties suitable for production, prevents aggregates from falling out, contributes to increasing the stability of the welding process and, correspondingly, the quality of the seam. A particularly important advantage of this wire is that it significantly reduces the splashing (by 2 to ~ -y / o) of the electrode metal when welding in the carbonic acid medium.

Compared to other known wires made of a metallic base material and aggregates, for example powdered Aggregate, consist, the present wire is characterized by simple manufacture and a lower Price of related materials from.

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Claims (7)

BK / He claims 1. Electrode wire made of a metallic base material and a composition of aggregates, in which im metallic base material, essentially along the surface line, Grooves for receiving the composition from . impact materials are carried out, characterized that each groove (3) in cross section represents a geometric figure extending in the direction the side surface of the wire (1) is narrowed. 2. Slectrode wire according to claim 1, characterized in that each groove (3) is essentially a trapezoid in cross-section, the smaller base line of which is on the side surface of the wire (1). 3. Electrode wire according to claim 1, characterized in that 5098 4 9/0752 that each groove (3) represents a triangle in cross section; the tip of which is on the side surface of the wire (1). 4. Electrode wire according to claim 1, characterized in that da3 the depth of the groove (3) equals 0.3 Ms 0,? of the radius of the wire (1) and the width of the groove (3) in the wire body is equal to ü, 3 to 0.8 of the radius of the wire (1). 5. Electrode wire according to claim 1, characterized in that that the total area of the cross sections of the grooves (3) 0.05 up to 0.3 of the cross section of the wire (1). 6. The method according to claim 1, which by plastic deformation, the! Shaping of substantially longitudinal Provides grooves on the side surface of the wire and the subsequent filling of the same with aggregates, characterized in that that before the grooves (3) are filled with the aggregates (2), the wire (1) is compressed in the radial direction will. 7. The method according to claim 6, characterized in that the wire (1) after filling the grooves (3) with the aggregates (2) is subjected to drawing until the grooves (3) are obtained, the cross-section of which is geometrical Figure has, which narrows in the direction of the side surface of the wire (1). 509849/0752 Blank page