GOST R 55554-2013
GOST R 55554−2013 Elektrodvigateli for underwater welding and cutting. General specifications
GOST R 55554−2013
Group В05
NATIONAL STANDARD OF THE RUSSIAN FEDERATION
ELECTRODE HOLDERS FOR UNDERWATER WELDING AND CUTTING
General specifications
The Electrode holders underwater welding also are sharp. General specifications
OKS 25.160.20
Date of introduction 2014−03−01
Preface
1 DEVELOPED by Scientific research Institute (rescue and underwater technologies) VUNTS Navy «naval Academy"
2 SUBMITTED by the Technical Committee for standardization TC 416 «Hyperbaric technology"
3 APPROVED AND put INTO EFFECT by the Federal Agency for technical regulation and Metrology from August 28, 2013 N 642-St
4 INTRODUCED FOR THE FIRST TIME
Application rules of this standard are established in GOST R 1.0−2012 (section 8). Information about the changes to this standard is published in the annual (as of January 1 of the current year) reference index «National standards» and the official text changes and amendments — in monthly index «National standards». In case of revision (replacement) or cancellation of this standard a notification will be published in the upcoming issue of the monthly information index «National standards». Relevant information, notification and lyrics are also posted in the information system of General use — on the official website of the Federal Agency for technical regulation and Metrology on the Internet (gost.ru)
1 Scope
This standard specifies General technical requirements and methods of control to electrode holders for underwater welding and cutting (hereinafter, electrode holders).
The standard applies to newly developed and modernized electrode holders for underwater welding and cutting.
The standard does not apply to electrode holders for batagarawa welding.
2 Normative references
This standard uses the regulatory references to the following standards:
GOST R 27.403−2009 Reliability in engineering. Test plans to control the probability of
GOST R 51652−2000 rectified ethyl Alcohol from food raw material. Specifications
GOST R 52119−2003 diving Equipment. Terms and definitions
GOST
GOST 20.39.108−85 Integrated system of General technical requirements. Requirements for the ergonomics, habitability and technical aesthetics. Nomenclature and order of choice
GOST 27.003−90 Reliability in the technique. The choice and rating of indicators of reliability
GOST 1050−88 hire gauged bars with special surface finishing of carbon structural quality steel. General specifications
GOST 2697−83 Asphalt roofing. Specifications
GOST 2991−85 wooden disposable Boxes for loads up to 500 kg. General specifications
GOST 3560−73 package steel Strip. Specifications
GOST 7866.1−76 ship Cables with rubber insulation in rubber or lead sheath. Specifications
GOST 8711−93 Devices showing analog electrical measuring direct action and auxiliary parts to them. Part 2
GOST 9569−2006 waxed Paper. Specifications
GOST 14192−96 Marking of cargo
GOST 15150−69 Machines, instruments and other technical products. Versions for different climatic areas. Categories, conditions of use, storage and transportation of the impact of climatic factors of the external environment
GOST 15543.1−89 electrotechnical Products. General requirements in terms of resistance to climatic external influencing factors
GOST 16962.1−89 electrotechnical Products. Test methods for resistance to climatic external influencing factors
GOST 16962.2−90 electrotechnical Products. Test methods for resistance to mechanical external influencing factors
GOST 17516−72 Products electrical. The operating conditions in terms of the influence of mechanical factors of external environment
Note — When using this standard appropriate to test the effect of reference standards in the information system of General use — on the official website of the Federal Agency for technical regulation and Metrology on the Internet or in the annual information index «National standards» published as on January 1 of the current year, and the editions of the monthly information index «National standards» for the current year. If replaced with a reference standard, which was given an undated reference, then it is recommended to use the current version of this standard, taking into account all enabled in this version modifications. If replaced with a reference standard, which is given a dated reference, it is recommended to use the version of this standard referred to above by year of approval (acceptance). If after approval of this standard in the reference standard, which is given a dated reference, a change affecting a provision to which reference, the provision is recommended to be applied without taking into account this change. If the reference standard is cancelled without replacement, the position in which reference is made to him, recommended to be used in part not affecting this link.
3 Terms and definitions
This standard applies the terminology according to GOST R 52119, as well as the following terms with respective definitions:
3.1 underwater electrode (N. D. p. covered electrode): Electrode, coated with a special lubricant for stable burning of the arc under water.
3.2 the electrode holder for manual underwater welding and cutting (n. d. p. underwater electrode holder): Device used by a diver when conducting underwater operations, to secure the underwater electrode and supply current thereto.
4 Reduction
This standard applies the following abbreviations:
Spare parts — spare parts and accessories;
OTK Department of technical control.
5 Classification
5.1 electrode holders, depending on the kind of underwater welding (cutting) is divided into the following types:
1) for underwater welding (cutting) — type EPS;
2) for underwater oxy-electric cutting and exothermic — type EKD.
5.2 Classification of electrode holders, depending on the values of the operating parameters are given in table 1.
Table 1
| Type electrode- holder |
Nominal parameters | The most current of welding (cutting) And not more | Electrode diameter, mm | Weight, kg, not more | |||||
| The current of welding (cutting), And | Continued resident the thrust of the welding cycle (cutting), min. |
Take tional continued resident the thrust load MON,% |
The working depth of welding (cutting), m, not more | MON-35% | MON-100% | The lower limit (welding/cutting) | The upper limit (welding/cutting) | ||
| EPS | 400 | 5 | 60 | 60 | 400 | 250 | 4,0/5,0 | 7,0/8,0 | 0,75 |
| EKD | 400 | 500 | 315 | 4,0/5,0 | 8,0/10,0 |
1,5 | |||
6 Technical requirements
6.1 Main indicators and characteristics
6.1.1 Indicators of destination
6.1.1.1 electrode holders for underwater welding is designed to provide welding and cutting metals by divers using underwater electrodes in all positions.
6.1.1.2 electrode holders for underwater oxy-electric and exothermic cutting is intended to provide cutting of metals and non metals by divers using electrodes in all positions.
6.1.1.3 electrode holders should provide a reliable separation of the cutting and welding of sheet and profile metal in sea water salinity up to 35% and in fresh water at a temperature of minus 2 °C to 30 °C, in all positions at depths up to 60 m.
6.1.2 design requirements
6.1.2.1 the Electrode holder shall be fitted with a handle. The length of the arm covered by the hand of a diver, shall be not less than 140 mm. Cross-section of the handle should fit into the circle, the diameter of which does not exceed 5 mm.
On the portion of the body of the electrode covered by the hand of the diver-cutter, must be rifled, eliminating slippage of the hand of the diver on the surface of the arm when performing underwater cutting in wet shirt with sleeves.
6.1.2.2 Design of the electrode holders must ensure reliable adherence to single-core cables with copper cores according to GOST 7866.1 section 25 and 35 mmfor the electrode holders of the type EKD; section 50 mm
— type EPS.
The length of the segment attached cable should be no more than 0.5 m.
6.1.2.3 Insulating parts of the electrode holders located in the attachment area of the electrode must be made of a material resistant to thermal effects of the welding arc. Heat according to Martens of material of these parts should be not less than 250 °C.
6.1.2.4 Design of the electrode holders must provide the ability to replace the insulating parts in the process.
6.1.2.5 Design of the electrode holders of the type EKD to ensure that after its Assembly density at working pressure oxygen valve and total tract flow of oxygen, including the seal end of the tubular electrode, with the input of the holder of the pressure of oxygen or nitrogen, equal to 1.5 MPa. In carrying out this inspection is not allowed leaks of oxygen through the threaded and sealing connection of electrode holders as in closed and in open position the oxygen valve.
6.1.2.6 the Processed surface of parts of electrode holders shall not have burrs, nicks, cracks and other defects. Threads should not have stripped threads, the distorted profile, nicks, snags. At the ends of the threads should be a lead-in chamfer.
6.1.2.7 Not permitted on the details of the oil contamination, conservation, grease or other fatty substances. All the details of the electrode holders entering the Assembly, must be degreased. The contents of grease should not exceed 250 mg/m.
6.1.2.8 the Internal cavity, the channels, drilling the oxygen valve and other parts of the electrode holders of the type EKD prior to their Assembly must be purged with nitrogen at a pressure of 0.6 MPa in order to remove from them the remnants of metal shavings and other foreign particles and substances.
6.1.2.9 the electrode holders are made in accordance with the requirements of this standard and normative documents for specific types of electrode holders.
6.1.2.10 the design of the electrode holder must ensure:
— reliable accession single-core cable with copper conductor cross-sections from 25 to 35 mm(the length of the cut cable should be no more than 0.5 m);
— installation and secure clamping with special underwater electrodes in range of diameters specified in clause 5.2, easy removal of the cinders;
— replace the electrode by a diver under water for no more than 6 s.
6.1.3 reliability Requirements
6.1.3.1 the Nomenclature and the General rules of the task indices of reliability should be set in accordance with GOST 27.003.
6.1.3.2 MTBF of the device for clamping the electrode should be not less than 6000 cycles with a confidence probability of 0.8.
Note — taking For the cycle movement of the collet clamp from the extreme outside position, which ensures the fastening of the electrode, and Vice versa. The cycle time is not less than 1.5 C.
6.1.3.3 mean time between failure shall be not less than 500 hours.
6.1.3.4 the overhaul life shall not be less than 5000 h with probability 
6.1.3.5 storage Life (without percussively) — at least 2 years with a probability 
6.1.3.6 service Life — not less than 10 years.
6.1.3.7 availability Factor is at least 0.98.
6.1.3.8 Average recovery time should not exceed 30 min.
6.1.4 Requirements for resistance to external influences
6.1.4.1 climate performances of electrode holders U1 and T1 — according to GOST 15150. The nominal value of the influencing climatic factors of the external environment — according to GOST 15543.1.
6.1.4.2 the electrode holders must meet the conditions in terms of the influence of mechanical factors of external environment — group M20 GOST 17516.
6.1.5 Requirements of ergonomics
6.1.5.1 General requirements characterizing the suitability of the technique to the person-the operator — according to GOST
6.1.6 the Requirements of manufacturability
6.1.6.1 production Technology of electrode holders must ensure their production of enterprises in accordance with the requirements of the normative documents for specific types of electrode holders.
6.2 Requirements for raw materials, materials, purchase products
6.2.1 the design of the electrode holders should be used materials and purchased products, mainly made from raw materials of a domestic production.
A number of scarce materials should be minimized.
6.2.2 All materials used for the manufacture of electrode holders must comply with the requirements of standards and normative documents for these materials. Material compliance with the requirements must be confirmed by certificates of manufacturers (suppliers), and in the absence of certificates — data testing laboratory at the factory.
6.2.3 All metal parts of the electrode holder must be corrosion resistant or corrosionresistant.
6.3 completeness
Electrode holders should be made and supply the complete. The completeness of the product creates in his passport. In the General case, the kit should include:
electrode holder;
— the head of the electrode holder;
— the clamp for the collet of electrodes;
— sets of collets;
— maintenance kit;
— documentation (passport, instruction manual);
— transport packaging.
Notes
1 the composition of the electrode holders, depending on the specific type determined at the stage of development and harmonization of technical specifications.
2 Requirements to components (power cable, oxygen valves and others) should be described in the design documentation for these products.
6.4 Labelling
6.4.1 To the body of the electrode holder is applied to the following data:
— trademark of the manufacturer;
— date of manufacture;
— nominal welding current, A.
6.4.2 Markings applied by extrusion, pressing, molding or other means according to requirements of normative documents for specific types of electrode holders.
6.4.3 Marking on the transport packaging is applied in accordance with GOST 14192.
6.5 Packaging
6.5.1 Prior to packing the outer surface of the electrode holder should be coated with preservative oil. Internal channels should be muted.
6.5.2 Each electrode holder together with spare parts should be wrapped in paraffined paper GOST 9569 and Packed in wrapping paper.
6.5.3 the Technical and shipping documentation is attached to the electrode holder should be wrapped in waterproof paper or paper with a polyethylene coating and are enclosed in a package made of plastic film with a minimum thickness of 150 microns. The seams of the package are welded (glued).
6.5.4 electrode holders and technical documentation in packs of 6.5.2, 6.5.3 must be Packed in tight wooden boxes of type P according to GOST 2991.
Stacking and packing of electrode holders should exclude the possibility of their displacement in the box and damage during transportation.
Boxes inside spread glassine P-350 GOST 2697.
6.5.5 Inside each box put a packing slip, which must be specified:
— the name of the manufacturer;
— the symbol of the electrode holder;
the number of electrode holders in the drawer;
— date of manufacture;
— a mark of acceptance of technical control of the manufacturer.
6.5.6 Box after installation of electrode holders and packing slip studs on the edges of the packing tape according to GOST 3560.
6.5.7 On each drawer indelibly applied lettering indicating the manufacturer (supplier), name of product, quantity packaged electrode holders, gross mass, net mass.
6.5.8 During long-term storage should be periodically, but not less than every 6 months to monitor the condition of packing and preservation of the electrode holders. If necessary, the electrode holders are subjected to re-preservation.
6.5.9 shelf Life canned and packaged electrode holder should be not less than three years.
7 security Requirements
7.1 the electrode holders must comply with the safety requirements of GOST
7.2 Conductive part of the electrode holder should be isolated and should be protected from accidental contact of a hand of the diver or welded product.
7.3 insulation Resistance of the conductive parts of the electrode holder under normal weather conditions prior to immersion in water shall not be less than 10 Mω.
7.4 the Handle of the electrode holder must be made of insulating material in accordance with the requirements
7.5 some insulated welding cable has to go inside the handle of the electrode holder to a depth equal to two times the external diameter of the cable, but not less than 30 mm.
7.6 temperature rise of the outer surface of the arm compared with the ambient temperature at the site covered by the hand of the diver, when the nominal mode of operation of the electrode holder should not be more than 40 °C.
8 Requirements of environmental protection
Electrode holders must not contain materials and substances that would cause harm to the environment and human health during their production, storage, transportation, operation and disposal.
9 acceptance Rules
9.1 To check the matching of the electrode holders with the requirements of this standard, the manufacturing enterprise must carry out acceptance, periodic and standard tests.
9.2 Acceptance tests subjected to each electrode for compliance with working drawings and the requirements of 6.1.1, 6.1.2, 6.3, 6.4, 6.5 and section 7.
9.3 Periodic testing is performed on two or more electrode holders at least once a year from the number of passed acceptance tests, thus check the compliance with the requirements of electrode holders 5.2; 6.1.1, 6.1.2,
9.4 Upon receipt of unsatisfactory results during periodic tests, repeat tests are carried out. The tests, in this case, are twice the number of electrode holders. The tests are carried out for parameters that receive an unsatisfactory result. The results of repeated tests are final.
The protocols of periodic tests shall be presented to the customer upon request.
9.5 routine tests carried out at change designs, materials or technology of manufacture no less than two electrode holders according to the program of periodic testing, with an additional check for compliance with the requirements in 6.1.4 and section 7 (in terms of protection from touching conductive parts).
Allowed to carry out standard testing of electrode holders only on those parameters for which changes can have an impact.
10 Methods of control
10.1 Checking electrical quantities specified in the table according to claim 5.2, except for insulation resistance and voltage in the insulation test on an electric arm strength, there should be an electrical measuring instrument with accuracy class not lower than 1.5 churchyard 8711.
10.2 the eligibility of the electrode holders working drawings and the requirements
10.3 insulation resistance Measurement of the electrode holder in compliance with the requirements of 7.3 is carried out with a megger at 500 V with accuracy class 1.0. In these tests, one lead of the megger is applied to the cable lug, the other to the insulated parts of the electrode holder (EKD — the head and the valve body).
10.4 When testing the dielectric strength of the insulation of the arm for compliance 7.4 the handle is applied a copper foil with an area not less than half of its surface. One terminal of the test transformer is applied to the foil, the other to the conductive part of the electrode holder. When testing the dielectric strength of the insulation arm of the electrode holders in climate version T (GOST 15150) the test voltage should be increased by 10% compared to the value specified in 7.4 of this standard.
10.5 Verification of the mass of electrode holders for compliance with the requirements of section 5.2 carry out weighing in the balance with a scale division 5 g.
10.6 Compliance with the requirements of electrode holders operating parameters according to table 1 test by performing actual underwater electric arc welding and oxy-electric (exothermic) cutting a diver-welder in the welding pool. While welding and cutting is performed in all spatial positions on the samples of RPV steels 10KHSND, AK-25, 09Г2, STZ offered to the test the manufacturer of electrode holders.
10.7 the replacement Time of the electrode in accordance with the requirements
10.8 When you check the reliability of fastening of a welding cable for compliance with the requirements cross-sectional area of cable core, but not more than 2000 N. The tensile force is gradually increased from zero to set value within 1 s and maintain 1 s. the Test is carried out alternately with cables, sections of which have lived is in paragraph
tension force shall be not less than 1400 N (140 kgf/cm
). For creating the effort to apply the relevant target loads, which is fixed to a copper cable conductors using the cable and clamp.
10.9 the Test electrode holder, the impact strength in accordance with the requirements
The test results were satisfactory in the absence of the electrode holders for cracks, chips and damages that violate their normal operation.
10.10 Testing of electrode holders for water resistance in accordance with the requirements
At the end of the tests carried out measurement of insulation resistance of the electrode holder, which shall not be less than 0.5 Mω.
After removal from the climate chamber, the electrode holder is subjected to a visual inspection. On the surface of metal parts should be free of corrosion, and on the surface of insulating parts — cracks, spoken, delaminations, and other damage that violates the normal operation of electrode holders.
10.11 Testing of electrode holders on a heat resistant when used in accordance with the requirements
Electrode holders under rated load can withstand up to steady-state heated condition in the heat chamber at a temperature corresponding to the upper value of ambient air temperature during operation.
Note — the Electrode is heated in a steady-state condition, if the temperature in all the controlled points is not increased more than 2 °C for 1 h.
After the tests are conducted by external inspection. On the surface of metal parts should be free of corrosion, and on the surface of insulating parts — cracks, spoken, delaminations, and other damage that violates the normal operation of electrode holders.
10.12 test of the electrode holders on the cold tolerance when used in accordance with the requirements
The electrode holders is kept in the cold chamber for 4 h.
After the tests are conducted by external inspection. On the surface of metal parts should be free of corrosion, and on the surface of insulating parts — cracks, spoken, delaminations, and other damage that violates the normal operation of electrode holders.
10.13 Protection against contact with conductive parts of the electrode holder on conformity to requirements 7.2 test a metal test rod with the end in the form of a hemisphere. The diameter of the rod when testing the shock protection in the attachment area of the electrode for the electrode holders at the nominal welding current 400 and 500 And should be equal to 16 and 20 mm, respectively. For electrode holders for other nominal welding current, and also when checking the safety guard outside the attachment area of the electrode stud diameter should be equal to 12 mm. When tested electrode in the electrode holder is not installed. Contact with the conductive parts of the electrode holder is determined using a signal lamp for a voltage less than 40 V.
The test results are considered satisfactory if the test rod at its end may not touch the conductive parts of the electrode holder.
10.14 To check the value of the temperature of the outer surface of the arm holder compared to the ambient temperature in compliance with the requirements in 7.6 clamping devices two electrode holders at the same nominal welding current is set the rod of steel grade 45 according to GOST 1050 so that the distance between the conductive parts of the electrode holders were A = (50±2) mm. the diameter of the rod must be equal to the upper limit of the diameters of the electrodes specified in 5.2. The electrode holders connect the segments of cable length of 500 mm each, section lived which should correspond to the maximum to check the type of electrode holder in accordance with the requirements
When tested through the electrode holders miss the maximum welding current at duty cycle of 100%. Type of current — constant. The test duration is 30 min. the Measurement of excess temperature is carried out with thermocouples at two points located diametrically opposite on the circle passing through the outer surface of the handle through the middle of the area covered by the hand of the diver-welder. The temperature is taken to equal the largest measured value.
10.15 compliance Monitoring of the reliability of electrode holders with the requirements of 6.1.3 should be conducted on the stages of the life cycle of development and manufacture of products single-stage method according to GOST R 27.403 during the following tests:
preliminary acceptance (at the stage of product development);
— qualification, standard, independent (under production).
10.16 To check the reliability of fastening of the electrodes into the device the electrode holder in each of the six selected for testing of electrode holders installed in the collet alternately to the electrodes 4, 5, 8 mm Electrode clamp clamping system and to its free end in the vertical position of the electrode is hung a weight of 5 kg. the Results are considered satisfactory if under a given amount of cargo is provided secure holding of the electrode in the electrode holder of each type of electrodes.
10.17 tests of the electrode holder of the type EKD Assembly to the density at working pressure is conducted to verify compliance with requirements
11 Transportation and storage
11.1 the factory packaging of the electrode holders must ensure the possibility of their transportation by any mode of transport.
11.2 During transportation must be taken to preserve the original packaging from mechanical damage and protect it from exposure to precipitation.
11.3 electrode holders stored in a factory package in enclosed and other premises with natural ventilation at temperatures from 0 °C to 25 °C on distance not less than 1 m from heating devices.
11.4 electrode holders should not be exposed to sunlight and substances that Deplete the rubber (gasket ring, diaphragm), or cause corrosion of metal parts of the product.
12 Guidance manual for
12.1 Before operation of the electrode holder with its outer surfaces should be completely removed with preservative grease, and then the entire electrode, including the internal valve in the oxygen supply to the conductive head holder (for type EKD) should be thoroughly degreased with ethyl alcohol according to GOST R 51652, and then purged with nitrogen at a pressure of 0.3 MPa.
12.2 Connection of the electrode holder with the standard welding cable directly on the location of work produced with use of cable lugs which must enter the package of the electrode holder.
12.3 Connecting the electrode holder with an oxygen hose from an oxygen tank, produced with the help of a nipple, which must be included in the scope of delivery of the electrode holder, followed by fastening of the hose on the nipple with Benzes.
12.4 Preparing the electrode holder to work under water and on air is made in accordance with the requirements set out in the operating manual of the electrode holder.
13 manufacturer’s Warranty
13.1 the electrode holders should be taken technical control of the manufacturer.
13.2 the manufacturer (vendor) guarantees that the electrode holders of the present standard requirements if the consumer operating conditions, transportation and storage specified in this standard.
13.3 the warranty Period is established 12 months and shall run from the date of entry of the electrode into operation, but not more than 18 months from the date of shipment of the electrode holder by the manufacturer.
