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GB 15579.11-2012: [GB/T 15579.11-2012] Arc welding equipment -- Part 11: Electrode holders
Status: Valid GB 15579.11: Evolution and historical versions
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| GB 15579.11-2012 | English | 319 |
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[GB/T 15579.11-2012] Arc welding equipment -- Part 11: Electrode holders
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GB 15579.11-2012
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| GB 15579.11-1998 | English | 479 |
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Safety requirements for arc welding equipment--Part 11: Electrode holders
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GB 15579.11-1998
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PDF similar to GB 15579.11-2012
Basic data | Standard ID | GB 15579.11-2012 (GB15579.11-2012) | | Description (Translated English) | [GB/T 15579.11-2012] Arc welding equipment -- Part 11: Electrode holders | | Sector / Industry | National Standard | | Classification of Chinese Standard | J64 | | Classification of International Standard | 25.160.30 | | Word Count Estimation | 12,118 | | Older Standard (superseded by this standard) | GB 15579.11-1998 | | Quoted Standard | GB 4208; GB 15579.1; IEC 60050-151 | | Adopted Standard | IEC 60974-11-2010, MOD | | Regulation (derived from) | National Standards Bulletin No. 41 of 2012 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This Chinese standard specifies the safety and welding clamp performance requirements. This standard applies to electrode diameter not exceeding 10 mm in manual arc welding with a welding clamp. This standard is not used for underwater welding electrode h | GB 15579.11-2012: [GB/T 15579.11-2012] Arc welding equipment -- Part 11: Electrode holders---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Arc welding equipment.Part 11. Electrode holders
ICS 25.160.30
J64
National Standards of People's Republic of China
Replacing GB 15579.11-1998
Welding equipment - Part 11. Electrode holders
(IEC 60974-11.2010, MOD)
Issued on.2012-12-31
2013-12-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Table of Contents
Preface Ⅰ
1 Scope 1
2 Normative references 1
3 Terms and definitions
4 Environmental Conditions 2
5 type inspection 2
6 design requirements 2
7 Operation 3
8 Protection against electric shock 3
9 Thermal Rating 4
10 mechanical requirements 5
11 7 Flag
12 User's Guide 7
Figure 1 Figure 4 temperature rise test installation
Figure 2 Resistance welding spatter test apparatus 5
Figure 3 swing impact test apparatus 6
Table 1 welding clamp size requirements 2
Foreword
This part of Chapter 3, "Terms and definitions" are recommended, the rest are mandatory.
"Arc welding equipment" ranging from electric arc welder for its auxiliary equipment, is expected to be divided into 13 parts, which are.
--- Part 1. Welding power sources;
--- Part 2. Cooling system;
--- Part 3. Arc and Arc Stabilisation Unit;
--- Part 4. Inspection and testing during use;
--- Part 5. Wire feeders;
--- Part 6. Load limits for manual metal arc welding power source;
--- Part 7. torch (gun);
--- Part 8. plasma cutting system gas path means;
--- Part 9. Installation and Use;
--- Part 10. Electromagnetic compatibility (EMC) requirements;
--- Part 11. Electrode holders;
--- Part 12. Coupling devices for welding cables;
--- Part 13. Welding clamp.
This section "arc welding equipment" in Section 11.
This section drafted in accordance with GB/T 1.1-2009 given rules.
This Part replaces GB 15579.11-1998 "Part 11 Safety requirements for arc welding equipment. Electrode holders." This portion
GB 15579.11-1998 compared to the main changes are as follows.
--- Environmental conditions according to GB 15579.1 was modified (see Chapter 4);
--- Provides welding tongs rated current is 60% duty cycle corresponding to the welding current value (see Chapter 6);
--- Table 1 welding cable minimum cross-sectional area range partly modified (see Table 1);
--- Accuracy requirements for measuring instruments has been modified (see 5.1);
--- Dielectric strength test, increasing the "Replace test" method (see 8.3).
--- Increased tolerance applied during DC rated current temperature rise test (see 9.1);
--- Canceled heating rods into the insulating layer depth limits (see 9.3);
--- Gives examples of welding clamp mark (see Chapter 11).
This section uses redrafted Law Amendment uses IEC 60974-11.2010 "Arc welding equipment Part 11. Electrode holders" only
IEC 60974-11.2010 in the heat treatment conditions, the rated current level and the cable cross-sectional area of the range made the appropriate changes.
This part of the reason for modification using the IEC 60974-11.2010, because.
a) China's vast territory, the southern summer, more typical hot and humid climate, so this part of the press GB/T 2423.3 requirements to the wet
The heat treatment temperature is 40 ℃. In this way, in line with national conditions, but also with the welding machine industry GB/T 8118 and other relevant standards coordination
Consistent.
b) electrode holder is supporting the use of electric arc welder, if the welding current rating level and the nominal current rating discrepancies can cause erroneous
solution. So this part of the nominal current rating according to GB/T 8118 provisions of sub-file, IEC 60974-11 current levels to include
In the form of number of reservations.
c) IEC 60974-11 and IEC 60974-12 respectively welding clamp and welding cable couplers are equipped with cable makes provision, but Regulation
Constant welding current and the corresponding cable cross-sectional area different from the former than the latter freshman profile. Since both devices are installed in the arc welding
The output of the power supply, the cable cross-sectional area should be consistent. Accordance with the actual usage, this part of the welding current corresponding electrical
Cable cross-sectional area shrink a file, the same as IEC 60974-12.
This part is proposed by the China Electrical Equipment Industrial Association.
This part of the National Welding Standardization Technical Committee (SAC/TC70) centralized.
This section is drafted. Ningbo Long Welding Technology Co., Ltd. Nantong-Hong mechanical and electrical welding, mechanical and electrical shares Zhejiang Kende
Limited parts, welding tools Yongkang launder Ltd., Shenzhen Ruiling Industrial Co., Ltd., Chengdu tripartite Electric Co.
Division of Electrical, Inspection and Chengdu.
The main drafters of this section. Chending Long, Tang Zikang, Zhuxuan Hui, Wang Xinmin, Qiu light, Xing Jun, Pan Ying.
This part of the standard replaces the previous editions are.
--- GB 15579.11-1998.
Welding equipment - Part 11. Electrode holders
1 Scope
This part of GB 15579 specifies safety and performance requirements of welding tongs.
This section applies to a maximum diameter of not more than 10mm electrode manual arc welding SMAW welding clamp used.
This section does not apply to underwater welding with welding tongs.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB 4208 housing protection (IP Code) (GB 4208-2008, IEC 60529.2001, IDT)
GB 15579.1 welding equipment - Part 1. Welding power sources (GB 15579.1-2004, IEC 60974-1.2000, IDT)
IEC 60050-151 International Electrotechnical terminology (IEV) Chapter 151. electromagnetic device (InternationalElectrotechnical
Vocabulary-Part 151. Electricalandmagneticdevices)
3 Terms and Definitions
GB 15579.1 and IEC 60050-151 and the following definition of terms and definitions apply to this document.
3.1
Welding clamp electrodeholder
Gripping and manipulation electrodes, welding wire and welding circuit is connected to an operator and welding circuit insulation handpiece.
3.2
Welding clamp head
Having a hole welding clamp, claw or equivalent member structure for electrode insertion, positioning, clamping and electrical connections.
3.3
Handle handle
Personnel holding welding clamp portion altar operation.
3.4
Joystick lever
Mounted on the welding clamp means for controlling the clamping device.
3.5
Rated current ratedcurrent
Specified by the manufacturer welding clamp at 60% duty cycle when the temperature does not exceed the current limit can bear.
3.6
A type welding clamp typeAelectrodeholder
In accordance with the provisions of GB 4208, with the standard test finger can not touch live parts inside the electrode holder.
3.7
B type welding clamp typeBelectrodeholder
A different type and is the head of the live parts of the welding tongs can not be touched the ball again. Test ball diameter should be according to the maximum diameter of the rod
Selected, see 8.1b).
4 environmental conditions
Electrode holder should be able to work under the following conditions.
a) Ambient temperature.
During welding. -10 ℃ ~ 40 ℃;
b) Relative humidity.
Not more than 90% 20 ℃ time;
Does not exceed 50% 40 ℃ when.
Ambient temperature is between -20 ℃ ~ 55 ℃, welding clamp in the transport and storage should not be functional damage.
5 type inspection
5.1 Test conditions
All types of tests should be carried out on a new, complete installation of welding tongs.
All types of tests should be carried out at an ambient temperature of 10 ℃ ~ 40 ℃.
Precision measuring instruments.
a) electrical measuring instruments. Level 1 (full scale ± 1%);
Insulation resistance and dielectric strength measurement exceptions for measuring insulation resistance and dielectric strength of the accuracy of the instrument is not specified, but the measure
Should consider the amount of accuracy problems;
b) temperature measurement devices. ± 2K.
5.2 Test order
Here are the type of inspection shall be in the following order.
a) general visual inspection;
b) temperature (see 9.1);
c) impact resistance (see 10.4);
d) Insulation resistance (see 8.2);
e) Dielectric strength (see 8.3).
It said another type inspection items not mentioned may be any convenient order.
6 design requirements
Electrode Holder shall continue the rated current value when the rate of 60% of the design load, and meet the dimensional requirements specified in Table 1.
Table 1 welding clamp size requirements
60% of the rated load current when sustained rate
Minimum range of electrode diameter
mm
The minimum cross-sectional area can range assembly welding cables
mm2
125 1.6 ~ 2.5 10 ~ 16
160 (150) 16 2.0 ~ 3.2 10 ~
200 2.5 ~ 4.0 16 ~ 25
Table 1 (continued)
60% of the rated load current when sustained rate
Minimum range of electrode diameter
mm
The minimum cross-sectional area can range assembly welding cables
mm2
250 3.2 ~ 5.0 25 ~ 35
315 (300) 50 4.0 ~ 6.3 35 ~
400 5.0 ~ 8.0 50 ~ 70
10.0 6.3 500 ~ 95 70 ~
Note. If using a welding clamp at 35% duty cycle, current desirable table next row higher ratings, so the maximum at 35% duty cycle of
Current value 630A.
By measuring is checked or not.
7 Operation
Electrode holders should be able to.
a) safe, fast and loaded electrode removed the remaining electrode stub;
b) in any specified part of the electrode holder, so that it can be welded to only 50mm long;
c) in the case where the operator does not impose any external force, the clamping electrode manufacturing a variety of diameters provider specified;
d) When the electrode and the workpiece bonded, can electrode from the workpiece.
With manual welding method, by operating the clamping device, visual inspection and d) trials, is checked or not.
8 Protection against electric shock
8.1 preventing direct contact
When the electrode holder without clamping electrode assembly specified by the manufacturer and only the smallest cross-sectional area of the welding cable, it should be able to prevent accidental contact with live
section.
For A-type welding clamp, welding clamp this requires the insertion of the electrode segments equally effective. With minimum and maximum diameter specified by the manufacturer of
Welding inspection.
Use the following method to test its qualified or not.
a) the provisions of GB 4208 standard test finger test.
1) A type welding clamp, and
2) other than B type welding clamp welding clamp head portion.
b) B type welding clamp welding clamp ball test by the following test.
1) When using the electrode diameter less than or equal to 6.3 mm, according to the provisions of GB 4208, metal specimen diameter of the ball
It is 12.5mm;
2) When using the electrode diameter exceeds 6.3mm, the metal test ball diameter d 0.05 0 mm, where d is specified by the manufacturer
It can double the thickest wire diameter used.
During the test, the test site on the jaw on the ball, is applied (30 ± 3) N of force.
It does not transmit the welding current spring should be insulated from other metal parts on the electrode holder.
By visual inspection of its qualified or not.
8.2 Insulation resistance
After heat treatment welding clamp insulation resistance should not be less than 1MΩ.
Through its qualified or not following test.
a) heat treatment.
Indoor temperature hot and humid effective work space should be maintained between (40 ± 2) ℃, relative humidity maintained within (93 ± 3)% range.
The welding clamp without cable first indoor 40 ℃ under heat in a preheated when welding clamp to stabilize temperature and then humidified to prevent
Produce condensation on the electrode holder. Welding clamp placed Damp indoor 48h heat treatment.
b) Insulation resistance measurement.
Electrode Holder After heat treatment, the surface of the water and immediately dry it, and then wrapped in metal foil welding clamp insulator outer surface.
It is applied between the electrode holder conductor and the metal foil 500V DC voltage, insulation resistance measurement, a reading at the stable.
8.3 Dielectric strength
Insulating portion electrode holder should be able to withstand the effective value of the AC test voltage of 1000V without breakdown or flashover phenomenon. Unaccompanied voltage
Any transient discharge reduction is negligible.
Through its qualified or not following test.
It is applied between the electrode holder and the metal foil conductor near-sinusoidal waveforms, peak value is not more than 1.45 times the rms frequency of 50Hz or
60Hz AC test voltage, continuous 1min.
Alternative test. can also be used to test for the AC RMS value of 1.4 times the DC voltage.
9 Thermal Rating
9.1 Temperature Rise
Table 1 specifies welding clamp fitted with the largest cross-sectional area of not tinned copper core cable and welding rod of the same diameter and the thickest low carbon steel rod
Later, with the rated current, the outer surface of the handle hottest temperature rise should not exceed 40K.
(See Figure 1) to test its qualified or not by the following test.
Explanation.
1 --- welding clamp;
2 --- mild steel rod.
Figure 1 installation drawing temperature rise test
Two specifications of the same electrode holder mounted on a respective length of at least 2m welding cable. Connect a clean, no oxidation of carbon
Sandwiched between welded steel rod clamp tight means 180 ° angle of two mutually showed the distance between the two welding clamp tight means is 50mm. Rods
And the angle between the electrode holder can be changed.
By welding rod connected together by welding clamp the cable suspended between two horizontally separated 1m gallows. Clamped round
In between two wooden sticks from the ground 200mm. Test site should be no air flow.
Welding clamp through a DC current of 75% of the rated current (approximately 60% duty cycle) until the rate of temperature rise of no more than 2K/h
It expires. Welding clamp by the two to obtain the average temperature rise of the temperature rise. Throughout the test period, the DC current rating should remain constant for Tolerance
± 2%.
This test should be carried out five times, and each time the choice of a new pair of welding tongs and a new low-carbon steel rod.
9.2 Heat
After the heating test according to 9.1, the insulation is welding clamp can not blistering, carbonation depth or star crack phenomenon, especially clamping
Electrode area appear not to damage them. This area is allowed to change the color or the insulating surface by foaming.
By visual inspection, is checked or not.
9.3 Resistance welding spatter
Handle shall withstand the heat insulating material objects and the normal amount of welding spatter, it would not burn or become unsafe.
All parts welding clamp under normal operating conditions should not cause a fire hazard, for example, the use of fire-retardant material.
Check with the device shown in Figure 2 of its qualified or not.
The heating rod is passed through a current of approximately 25A to reach 300 5 0 ℃ thermally stable state. During the test, the heating rods should keep this
A temperature, and is measured with a thermometer or thermocouple.
The horizontal position of heating rods placed in the handle of insulating weaknesses (for example. the thinnest insulating layer, closest to the charged body parts),
Length 2min. Heating rods should not penetrate the insulating layer and the contact with live parts. Handle the entire site area, heating rods applied to the wall thickness of the thinnest
And charged at the internal surface of the handle body from the nearest.
Or with a spark ignited a small fire to try to escape the contact portion of the gas, if the gas is flammable, so leave a heating rod, the flame should stand
That is extinguished.
Millimeters
Explanation.
1 --- 8 chrome-nickel steel heating rods;
2 --- welding clamp handle;
θ --- test temperature.
2 Resistance welding spatter test apparatus of FIG.
10 mechanical requirements
10.1 Welding cable entry
Welding cable entrance on the design of electrode holder, should be able to prevent bending of the cable damage.
By visual inspection, is checked or not.
10.2 Welding cable insulation embedded depth
Insulating portion into the electrode holder welding cable depth of at least twice the diameter of cables, but at least for the 30mm.
Measured by fitting specified by the manufacturer of the largest cross-sectional area of the welding cable, is checked or not.
10.3 Welding cable connection
Inner electrode holder welding cable specified by the manufacturer should be able to replace the cross-sectional area of the range, the connection should be able to withstand tensile testing without disengaging.
By visual inspection and the following test, test its qualified or not.
Welding clamp fitted by using the instructions require the largest cross-sectional area of the welding cable, press the cable cross-sectional area of the weld size, is applied to the junction
40N/mm2 tension, but the maximum 10 times the tensile test for the 2000N tension. Every time tension within 1s gradually from 0 to Regulation
Setting, and continuous than 1s.
After the test, the conductor and not significantly displaced. With manufacturer specified minimum cross-sectional area of the welding cable, repeat the test.
If the connection of more than one welding cable, then each connection should be tested.
10.4 Impact
After welding clamp subjected to mechanical impact test, welding clamp or manipulation part changes should not be visible or functional.
Insulating portion not appear damaged or cracks phenomenon, but allow a small surface scratches or debris.
By the following test, is checked or not.
a) a vertical drop
Welding clamp through welding cables hung up, so that the welding clamp ends up striking the plane 1m. It is a plane crash in
Low carbon steel on the ground, having a thickness of at least 9mm.
With the release of the cable welding clamp, so that the free fall. Each of the electrode holder should test three times.
b) the impact of swing
Test Method 3 shown in FIG. Welding clamp suspended by its cable, move to A 'along the direction perpendicular to the wall. In the initial velocity
Release the case of zero welding clamp, so that the impact pad under the following conditions.
--- A spacer is 40mm × 40mm × 5mm carbon angle, the apex radius of 5mm;
--- Welding cable suspension point adjustment to higher apex angle at 1m, so welding tongs to be impacted in a freely suspended state
The site is just in contact with the angle of the apex;
--- When test, welding clamp position offset from the vertical to the wall was raised to 400mm place.
Electrode Holder should strike angle sixth. two of which hit the electrode holder head; twice hit the middle of the handle, twice hit the joystick. in case
Welding clamp no joystick, then twice hit the weakest part of the electrode holder.
Millimeters
Figure 3 swing impact test apparatus
11 logo
It should be clearly and permanently marked on each of the following welding clamp.
a) manufacturers, distributors, importers name or trademark;
b) by the manufacturer of a given type (mark);
c) rated current;
d) The part number to confirm that the welding tongs comply with this part.
E.g.
B200/GB 15579.11
The example shows. for trademark-licensing welding clamp, B, rated current of 200A, in line with the requirements of GB 15579.11.
View content of the flag, is checked or not.
12 User's Guide
Each of the electrode holder shall provide a copy of the instructions include the following.
a) the scope of the electrode holder;
b) proper connection welding cables;
c) selection of welding cable type and size of the cross-sectional area;
d) welding current and duty cycle of the relationship;
e) a list of spare parts.
Read the manual, is checked or not.
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