CS270161B1 - Dispensing packaging for enveloping electrodes - Google Patents

Abstract

The solution relates to a method of removing the coating of clamping electrodes for manual arc welding; or the coating of continuous welding wires; 8 coatings containing inorganic? or organic substances and a core containing chromium; chromium-nickel; autanitic materials, at the same time, etc. The essence of this method of removing the coating of clamping electrodes; their equivalents and substitutes is that; only for the effective and workable quality of the coated clamping electrodes and by treating them with an aqueous solution of hydrated cement based on calcium carbonate? silica carbonate? aluminum carbonate and magnesium carbonate with a concentration of from 9 to 54% by weight of hydrated cement and 46 to 91% by weight of water? and simultaneously? either in a continuous manner, or in a free combination, and by treating them continuously or intermittently with plastering; by cuttings? falling, impacts; impacting, etc.? e.g. in a mechanical? rotating drum? or by applying vibrations to the packaging material clamping the electrode; or by ultrasound? or combined, without dependence, e.g. on a mechanical drum, etc.; using it, however, simultaneously; in the presence of an aqueous solution of hydrated cement? or several hydrated cements.

Description

The invention relates to an epoeob of removing a sheath of coated welding electrodes, or continuous wires for welding with a sheath comprising inorganic or organic substances, and a core containing chromium-nickel; automotive materials; ' stainless steel, etc.

OopoeiaT casings of welding electrodes, or replacement equivalents and the like, were removed by mechanical shock and impact; either by hand with a hammer; or by wrapping each other in a drum with hammer cleaning and sandpaper. With particularly expensive cores of these electrodes, such methods have also been more or less acceptable. Their disadvantages hurt especially in the laboriousness and always in the damage of the linearity of individual electrodes; especially in smaller core diameters. There was also a special damage, marked by the fact that during the visual evaluation, after the sanding operation, more noticeable perceptible islets of residues of packaging material remained on the core, or also diffuse islets, especially at the older electrodes. High dust in the worker's breathing zone degraded the hygiene of the work environment.

The above shortcomings address the method of removing the packaging of the coated welding electrodes, etc .; the essence of which lies in the fact that they are pre-affected by mechanical shocks, vibrations or ultrasound; or even without this prior influence, the coated welding electrodes are soaked or soaked (e.g. alternately or continuously with mechanical action) in an aqueous solution of hydrated oxide-based cement. calcium; silica; alumina and magnesium oxide. The aqueous solution of hydrated cement at room temperature consists of 46 to 91% by weight of water and 9 to 54% by weight of hydrated cement. If the shell structures of the welding electrodes have not been exposed to the effects of mechanical cuts, etc. before soaking in, it must and must not be attached during soaking and after soaking. Some types of packaging; or in other cases, other types of wiped packages ai require plastering by mechanical shock before soaking to facilitate diffusion of the soaking solution.

The main advantages of this apoaob are the preservation of the quality of the core material, e.g. rods and the like; in particular the preservation of the geometric shape, the electrode, the preservation of dimensions, etc .; For the complete elimination of waste from this title, for a higher degree of purification of the Electrode Core from the packaging material; a significantly lower workload, as well as a reduction in the health damage of the whole proceau by; that the dust from exposure in the respiratory zone of the envelope has been completely eliminated; as well as total dust, and the waste material is collected without residue in the form of sludge; and which! is relatively better handling.

In one case, verifications were performed; evaluation and parametric tests of this epoeob of removing the packaging of welding electrodes for manual welding methods. It was a semi-operational production outage due to an unsuccessful batch of the mixture of packaging and the content of inorganic substances in the development of a new electrode under the designation VÚZ-B Poldym, while it was a specifically technologically focused welding electrode based on ecolloyed stainless steel with a composition of 18 Cr 8Ni2Mo; for welding auenititic materials. The batch sold a quantity of about 125 kg of the final product. First, a solution was prepared from water of common acidity by treatment (Cl; F) for drinking and from hydrated cement based on calcium oxide, silica; of alumina and magnesium oxide in this water ratio of 78% by weight, hydrated cement 22% by weight. By loading hydrated cement into water; approx. 5 min. by stirring and approx. 15 min. by maturation, a disruptive solution was prepared. A mechanical mixing drum with a total circulation of about 150 l of air reactor was prepared for the hall; into which the disrupting solution and about 60 kg of coated evaration electrodes were applied. After closing, the drum was ejected into operation. After about 1 hour. operation at 25 rpm. ”The first visual inspection was performed. The coating was removed by an estimate of 1/8 to 1/10 of the amount of coating circulation on the individual electrodes. In the second inspection, after a total of three hours, the treatment of the disruptive solution and the mechanical effects of the precipitation in the drum ea showed; that the packaging was released from about 90% of the total amount. After another 40 minutes. cleaning in the drum, the electrode cores were sufficiently readable to be rinsed with clean water, dried, checked for curvature

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CS 270 161 B1 and left without residue for further processing. Also, aa processed the second batch of this batch, with aa monitoring the effect for 6 min. disruption of the packaging of the coated welding electrodes by mechanical shocks and vibrations before dipping and after completion was completely used for processing. By mechanically influencing the surface and the volume of the mass of the package before soaking, and to reduce the required soaking time by an average of 5 to 8%. Disrupting solution with a total amount of about 160 l; divided into two batches, even after removal of the coarse fraction of the released coating, it was tested for efficacy for further use. It turned out that the efficiency dropped to about 14 to 18% of the flood) value, which is almost unbearable for practice. The solids and sludge were separated by separation and stored.

In another case, when applying a solution containing 65% by weight of water and hydrated cement on the basis of 36% by weight, the coated coating electrodes cleaned in the same drum were the same as in the previous case with a total weight of about 42 kg. drum speed 30 fps * '*'; wherein complete cleaning of the welding electrodes from the packaging material was achieved within 2 hours. and 50 min. The electrode cores were kept in the required condition and all were reintroduced into production without exclusion. The effects of ultrasound (950 + 1000Hz) reg. vibrations (50Hz) to break the casing of the welding electrodes, both in parallel with the influence of mixing and mutual weighings in the drum, a smaller reduction of the time to complete cleaning was achieved (approx. 8 - 12%). The effect of ultrasound, rasp, vibrations in self-vacuum, without other effects, with immersion in the demolition solution was also tested - shortened time was achieved until the core was completely cleaned of the welding electrode casing.

Aqueous solutions in the range of from 46 to 91% by weight of water and, correspondingly, from 9 to 54% by weight of hydrated cement were tested; and the identified limits already showed a prolongation of the packaging removal process, reap, insufficient removal of the packaging mass due to reduced demolition effect either by a low concentration of active substance (max. 91% by weight, water) or by reducing diffusion and penetration into the packaging mass (max. 54% mass of the active substance).

The possibilities of using the method according to the invention are mainly there; where, for economic knowledge, or for reasons of immediate) need and problematic reach for the replacement core material of the welding electrodes; as well as in the case of special alloys; cleaning is cheaper than the loss of welding electrode cores. It is used in research, development and industrial production of additional materials; in the adaptation of the old; unusable welding electrodes, for new additional material.

Claims (1)

2 CS 270 161 B1 and without addition for further processing. Similarly, a second batch of this batch was prepared, and the effect was observed for 6 min, disintegration of the envelopes of the encapsulated electrodes by mechanical shock and vibration prior to soaking, and after completion was complete for processing. By mechanically affecting the surface and mass of the container prior to soaking, an average of 5 to 8% is required to reduce the required soaking time. divided into two batches, the roughness of the released wrapper was tested for efficacy for the next use. It turned out that efficiency dropped to about 14-18% of the flood value, which is almost unbearable for preprax. The solids and sludges were separated by sedimentation, deposited in the harvesting, in another case, by the annealing of the solution and the water content of 65% by weight. and hydrated cement based on 35 wt. In the same drum, the coated electrode welding of the same coating composition as in the previous case had a total weight of about 42 kg, at the drum revolutions of 30 minutes *, with complete cleaning of the welding electrodes from the packaging mass. and 50 min. At the same time, the electrode cores were kept in the necessary state and all were put into production without closure. Also, the effects of ultrasound (950 + 1000Hz) regulating vibration (50Hz) on disturbing enveloping electrode envelopes were both paralleled by the influence of shaking and deburring in the drum - less time to complete purification was recovered (approx. 8-12%) . It examined the sowing of ultrasound, resp. vibrations in a self-contained, no other effect, with immersion in the demolition solution - the time has been shortened to completely clean the cores from the welding electrode shell. Aqueous solutions ranging from 46 to 91% by weight were run in water. % water and, respectively, from 9 to 54 wt. hydrated cement, and the found boundaries already showed an extension of the packaging removal process, rasp. Insufficient removal of the coating mass due to the destructive effect of either the low concentration of the active ingredient (max. 91% by weight of water) and / or the ability to diffuse and penetrate into the container mass (max. 54% of the active ingredient). The possibilities of using the method according to the invention are especially where the economic reasons or the immediate need and the problem reach of the replacement core material of the welding electrodes; as well as in special leggings; cleaning is cheaper than the loss of welding electrode cores. Use in research, development and industrial production of additive materials; in adapting old; of unusable welding electrodes, to new additive material. OBJECT OF THE INVENTION A method for removing packaging of coated welding electrodes, continuous drots, their equivalents and / or replacements, with inorganic-containing packaging; or organic matter thereby; that the coated welding electrodes; or their equivalents are wetted with an aqueous solution of hydrated cement consisting of 46 to 91 wt. % water and 9-54 wt. hydrated cement based on calcium oxide, silica, alumina and magnesium oxide; and during soaking, before soaking, soaking, or sequentially together before; during and after soaking, the coated welding electrodes or their equivalents are subjected to mechanical shock; vibration and ultrasound, or in combination.