RU28064U1 - MELTING ELECTRODE FOR ARC WELDING - Google Patents

Description

Melting electrode for arc welding.

The proposed utility model relates to the field of arc welding.

(hereinafter - DC), namely, to the designs of melting electrodes for DC.

Despite the widespread development of machine welding methods in industry, manual welding is still one of the massive technological methods in construction, repair and installation work.

One of the elements of welding that limits the capabilities and quality of a manual DS is a melting electrode, because it has many polar requirements.

So, on the one hand, it must withstand quite high power, sometimes shock, loads during the welder's work, on the other hand, its coating should be quite porous for a better reaction with the components of the electric arc bath and for protection against oxidizing components of the weld.

On the one hand, it should contain a durable, non-bending base metal to prevent cracks in the coating, and on the other hand, the desirability of changing the shape of the rod when conducting a DW in hard-to-reach places.

Known melting electrode III for DS, having a base in the form of a metal rod and compositional coating.

The disadvantage of this consumable electrode is the increased fragility of the coating, which cracks even with small shocks and shaking, which leads to increased humidity of the coating and, as a result, to a significant decrease in the quality of the weld in the joint.

In the case of large cracks and bending of pieces of coating, damage to the melting electrode and the inability to use it for welding.

In addition, this electrode is impossible to conduct DS in hard to reach places.

Known melting electrode / 2 / for DS, the composition of the coating of which is introduced components that reduce the fragility of the coating, increasing its elasticity, and therefore its integrity during impacts during operation and transportation.

The disadvantage of this electrode is a significant increase in its cost and the inability to conduct DS in hard-to-reach places.

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MKI: B23K, 35/00

A melting electrode / 3 / for DS is known, in which an additional metal casing is introduced over the coating, which improves the resistance to electrode gas to power, protects the coating of the electrode from moisture and, as a result, significantly improves the quality of the weld.

The disadvantages of this electrode, despite the above advantages, are a significant increase in the cost of its manufacture and the fact that they still do not provide for conducting DS in hard-to-reach places.

The aforementioned melt; the electrode / 3 / was taken by the authors as a prototype of the proposed design as the closest in technical essence ..

The task that the authors posed during the development of the proposed design was the development of a cheap and easy to manufacture melting electrode for a DS, providing both high preservation of the electrode coating under power loads, and the possibility of conducting a DS in hard-to-reach places and under water.

This was achieved in the design of a melting electrode for a DS containing mainly a metal base - a rod, a composite coating layer and a protective elastic, moisture-resistant shell, mainly of synthetic material.

In the embodiment of the melting electrode, the protective sheath is made in the form of an overwrap winding with adhesive tape such as “Scotch.

A new significant feature of the design is the implementation of the protective sheath of the electrode from an elastic, moisture-resistant, mainly synthetic material.

In an embodiment, a new essential feature of the electrode is the implementation of a protective sheath in the form of a winding in the overlap with an adhesive, synthetic tape of the type “Scotch.

The proposed design of the consumable electrode is presented

1, 2 and 3, where FIG. 1 shows the constructional electrode, FIG. 2 and FIG. 3 show embodiments of conducting a deformed electrode in a difficult place and under water.

Figure 1 presents:

1- metal rod / base / electrode for DC;

2- composite core coating;

3 - a protective shell made of elastic, moisture-resistant, mainly synthetic material;

4- embodiment of a protective shell in the form of a winding with an adhesive tape type adhesive tape.

Dro ..

5- corner of the room where welding is carried out;

6 - repaired pipe;

7 - option curved electrode for the convenience of conducting DS;

8 - a container of water, where DS is carried out by the proposed rod;

9- option of a curved electrode for conducting DS under water.

The manufacturing technology of the proposed consumable electrode is similar to the well-known ones, for example, for electrodes with a base in the form of metal rods, the composite coating is applied by dipping into the bath with the coating melt, then the electrode is dried.

After that, a protective elastic, moisture-resistant coating is applied, mainly from a synthetic film, which can be realized by sputtering or dipping into the melt followed by polymerization or, alternatively, by wrapping the electrode with a composite adhesive tape with adhesive tape such as Scotch tape, for example, on cellulose basis.

The protective shell formed by the above technology provides both non-destruction of the coating during sharp force impacts such as transportation in the body, and with the necessary bending of the electrode when conducting the DC in an inaccessible place, for example, as in FIG. 2 or under water, as, for example, shown in Fig.Z.

Moreover, as shown by the practice of using an experimental batch of the proposed electrodes, the necessary tightness and safety of the coating for these types of work and, as a result, the necessary quality of the weld are ensured.

Currently, work is underway on the industrial development of the proposed design. Director of the State Unitary Enterprise of the city of Moscow “M Literature.

1. Patent of the Russian Federation No. 2027572 of 1999 MKI: V 23K, 35/02

2.A.S.No.266110 from 1969 MKI: V 23K, 35/10 Busankin V.A. Brodyagin V.N. Koloskov Yu.E. Pokladov Yu.P. Polovinkin P.A.

Claims (2)

1. A consumable electrode for arc welding, containing a base, mainly in the form of a metal rod, a composite coating and a protective sheath, characterized in that the protective sheath in it is made of an elastic, moisture resistant, mainly synthetic material. 2. A consumable electrode for arc welding according to claim 1, characterized in that in it the protective sheath is made in the form of a winding with an overlap with adhesive tape such as Scotch tape.