GB/T 8118-2010 (GB/T8118-2010, GBT 8118-2010, GBT8118-2010) & related versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Similar PDF |
| GB/T 8118-2010 | English | 250 |
Add to Cart
|
0-9 seconds. Auto delivery.
|
The general specification for arc welding machines
|
GB/T 8118-2010
| Valid |
GBT 8118-2010
|
| GB/T 8118-1995 | English | 439 |
Add to Cart
|
4 days
|
The general specification for arc welding machines
|
GB/T 8118-1995
| Obsolete |
GBT 8118-1995
|
| GB 8118-1987 | English | RFQ |
ASK
|
3 days
|
The general specifications for arc welding machines
|
GB 8118-1987
| Obsolete |
GB 8118-1987
|
Buy with any currencies (Euro, JPY, KRW...): GB/T 8118-2010 Preview this PDF: GB/T 8118-2010
GB/T 8118-2010: PDF in English (GBT 8118-2010)
GB/T 8118-2010
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 25.160.30
J 64
Replacing GB/T 8118-1995
The general specification for arc welding machines
ISSUED ON: NOVEMBER 10, 2010
IMPLEMENTED ON: MAY 01, 2011
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine of PRC;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Terms and definitions ... 6
4 Basic parameters ... 6
5 Conditions of use ... 7
6 Technical conditions ... 7
7 Inspection method ... 11
8 Inspection rules ... 20
The general specification for arc welding machines
1 Scope
This standard specifies general technical requirements, inspection methods,
acceptance rules for arc welding machines.
This standard applies to arc welding machines (hereinafter referred to as
welding machines), which are designed for industrial and professional use, AND
are powered by a voltage not exceeding the voltage specified in Table 1 of the
GB/T 156 standard OR driven by mechanical equipment.
This standard does not apply to manual arc welding power sources with limited
load, which are used by non-professionals.
If there are special requirements for various types of welding machines, they
can be supplemented, on the basis of this standard.
2 Normative references
The provisions in following documents become the provisions of this Standard
through reference in this Standard. For the dated references, the subsequent
amendments (excluding corrections) or revisions do not apply to this Standard;
however, parties who reach an agreement based on this Standard are
encouraged to study if the latest versions of these documents are applicable.
For undated references, the latest edition of the referenced document applies.
GB/T 156 Standard voltage (GB/T 156-2007, IEC 60038:2002, MOD)
GB/T 2423.3 Environmental testing for electric and electronic products - Part
2: Testing method test Cab: Damp heat Steady state (GB/T 2423.3-2006,
IEC 60068-2-78:2001, IDT)
GB/T 2900.22 Electrotechnical terminology - Electric welding machine
GB 5226.1 Electrical safety of machinery - Electrical equipment of machines
- Part 1: General requirements (GB 5226.1-2008, IEC 60204-1:2005, IDT)
GB/T 13165 Methods of measurement on noise emitted by arc welding
machine
GB 15579.1 Arc welding equipment - Part 1: Welding power sources (GB
6.4 Efficiency
The efficiency of the welding machine shall meet the requirements of the
relevant energy efficiency standards for electric welding machines.
6.5 Power factor
The input power quality indicators, such as the power factor of the welding
machine, shall comply with the relevant energy efficiency standards for electric
welding machines.
6.6 No-load current
In the rated state, the no-load current of the manual arc welding machine shall
not be greater than 10% of the rated input current; the no-load current limit of
other welding machines is stipulated by the product standard.
6.7 Welding adaptability
The welding machine shall have good static and dynamic characteristics; in the
entire adjustment range, it shall be able to ensure easy arc ignition and stable
arc.
6.8 Cooling system
For welders with liquid cooling, the coolant shall meet the corresponding
standards. If water cooling is used, the quality of the cooling water shall meet
the water quality standards for industrial water. The cooling system shall be able
to work normally, under the specified inlet pressure; there shall be no water
leakage or water seepage.
6.9 Pneumatic system
The pneumatic system of the welding machine shall be able to work normally,
under the specified intake pressure; there shall be no air leakage.
6.10 Traction force of wire feeder
The traction force of the wire feeder shall ensure uniform wire feeding; the
traction force is specified by the product standard.
6.11 Control system
The control system of automatic and semi-automatic welding machines shall be
able to ensure the setting and adjustment of welding machine working
parameters; have the necessary procedures and actions for the welding
machine to work normally. The welding parameter indicators shall be easy to
observe.
6.18 Complete set of welding machine
The complete set of the welding machine is stipulated by each product standard.
6.19 Welding power source
The safety requirements of the welding power source of the welding machine
shall meet the requirements of GB 15579.1.
6.20 Wire feeder
It shall meet the requirements of GB/T 15579.5.
6.21 Welding torch (gun)
It shall meet the requirements of GB/T 15579.7.
6.22 Welding tongs
It shall meet the requirements of GB 15579.11.
6.23 Welding cable coupling device
It shall meet the requirements of GB 15579.12.
6.24 Packing, storage, transportation of welding machine
It is stipulated by each product standard.
6.25 Instructions for use and marking
It shall meet the relevant requirements of GB 15579.1.
7 Inspection method
7.1 Inspection conditions
See the relevant requirements of GB 15579.1.
7.2 General visual inspection
The assembly quality of the welding machine shall be checked before the test,
such as whether the screws, bolts, nuts used for fastening are tightened;
whether the cooling fan, various adjustment devices, push rollers can rotate
flexibly; whether various signs meet the drawing requirements; whether the
data on the nameplates is complete and correct; whether the connection of the
protective conductor terminal is reliable.
ΔU2 - The rate of change of welding voltage.
7.5 Change rate of wire feeding speed
7.5.1 The rate of change of wire feeding speed is carried out without welding.
The hose, between the wire feeder and the welding torch (gun), remains straight.
7.5.2 For this test, measure the following two states, respectively, in the three
cases where the power supply voltage is 90%, 100%, 110% of the rated value.
a) Maximum wire feeding speed and minimum welding wire diameter;
b) Minimum wire feeding speed and maximum wire diameter.
Measure the length of the welding wire, through the wire feeder, in no less than
10 s.
7.5.3 The rate of change of wire feeding speed is calculated as follows:
The calculation result shall be the larger of the absolute value.
Where:
V0N - The wire feeding speed at rated voltage;
V0 - The wire feeding speed when the supply voltage is 90% and 110% of
the rated value;
ΔV0 - The rate of change of wire feeding speed.
Wire feeding speed V0 = L/T
Where:
L - The length of the welding wire sent out, in meters (m);
T - Time, in seconds (s).
7.6 Change rate of welding speed
7.6.1 The rate of change of welding speed is carried out without welding. The
guide rail of the walking mechanism of the welding machine shall be level or in
actual use.
7.6.2 The test is carried out under the three conditions of the power supply
voltage, which is 90%, 100%, 110% of the rated value. Measure the distance,
The dynamic characteristics measurement conditions are as follows:
a) During the measurement, the input shall be kept at the rated voltage and
rated frequency.
b) The measurement shall be carried out at two points: the rated welding
current and 20% of the rated welding current. At this time, the load voltage
shall be in accordance with the relevant requirements of GB 15579.1.
When the rated welding current is 300 A and below, the dynamic
characteristic measurement conditions are stipulated by the product
standard.
c) After the output terminal of the welding machine is connected to the cable,
a contactor of sufficient capacity shall be directly short-circuited; the
resistance of the external circuit shall be 0.008 ~ 0.01 Ω. If it is necessary
to compare the dynamic characteristics of two or more welding machines,
it shall be carried out under the same external resistance.
d) The measurement shall be carried out under hot conditions.
e) The oscillogram shall include three lines of voltage, current, time scale, as
well as the corresponding calibration values.
7.10.3 Welding test
The test methods and specifications of the welding test are stipulated by the
product standard.
7.11 Tightness test of cooling system
Pass the coolant, at a pressure of 0.5 MPa, to the cooling system, for a duration
of 1 min. Observe whether there is any leakage of coolant. The test is carried
out, when the outlet hole of the coolant is blocked.
7.12 Air path tightness test
Pass the compressed air into the air path, to make the pressure reach 0.5 MPa,
for a duration of 1min; observe whether there is any air leakage. The test shall
be carried out with the air outlet blocked.
7.13 Determination of the traction force of wire feeder
7.13.1 With the wire feeding hose removed, the traction force of the wire feeding
device is measured, through the maximum wire diameter and the minimum wire
feeding speed.
7.13.2 When measuring with the method of raising the static load by the wire
feeding wheel, connect an ammeter to the armature circuit of the wire feeding
motor. When the armature current does not exceed its rated value, if the wire
feeding wheel is lifted evenly AND there is no slipping, then the load weight at
this time is the traction force of the wire feeder of the welding machine.
7.14 Current and voltage adjustment range, level difference and indication
accuracy measurement
7.14.1 The input terminal of the welding power source shall maintain the rated
voltage and rated frequency; the corresponding load voltage shall be in
accordance with the relevant requirements of GB 15579.1.
During the type inspection, the welding power source shall be carried out in a
hot state. During routine inspection, it can be carried out in a cold state.
7.14.2 For the current and voltage adjustment range, it shall measure the
maximum output and minimum output of the welding power source; record the
welding current and load voltage, at the same time.
7.14.3 When the current and voltage are adjusted in stages, the level difference,
between the two adjacent stages, shall be measured and calculated as follows:
Level difference = [(Value at higher stage - Value at lower stage) / Value at
higher stage] × 100%
7.14.4 The accuracy of the current and voltage's scale indication values is
calculated as follows:
Indication accuracy = [(Indication value - measured value) / Indication value] ×
100%
The calculation result shall be the larger of the absolute value.
7.15 Noise test
The noise test method of the welding machine shall be carried out, in
accordance with the provisions of GB/T 13165.
7.16 Damp heat test
The test is carried out in accordance with the provisions of GB/T 2423.3; the
following detailed rules are stipulated;
a) The welding machine shall pass the insulation resistance and dielectric
strength tests, which are required by this standard, before the test;
b) The welding machine is not packaged or powered; it is placed according
to normal use conditions;
......
| Standard ID | GB/T 8118-2010 (GB/T8118-2010) | | Description (Translated English) | The general specification for arc welding machines | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J64 | | Classification of International Standard | 25.160.30 | | Word Count Estimation | 13,192 | | Date of Issue | 2010-11-10 | | Date of Implementation | 2011-05-01 | | Older Standard (superseded by this standard) | GB/T 8118-1995 | | Quoted Standard | GB/T 156; GB/T 2423.3; GB/T 2900.22; GB 5226.1; GB/T 13165; GB 15579.1; GB/T 15579.5; GB/T 15579.7; GB 15579.10; GB 15579.11; GB 15579.12; GB/T 16935.1 | | Drafting Organization | Welder Co., Ltd. Hangzhou Kaierda | | Administrative Organization | National Standardization Technical Committee Welder | | Regulation (derived from) | National Standard Approval Announcement 2010 No.8 (Total No.163) | | Proposing organization | China Electrical Appliances Industry Association | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, China National Standardization Administration Committee | | Summary | This standard specifies the general technical requirements arc welder, test methods and acceptance criteria. This standard applies to industrial and professional use by no more than a requirement GB/T 156 standard tables in the voltage supply or mechanical equipment Yu dynamic arc welder (hereinafter referred to as the welder). This standard does not apply to non- professionals use restrictions SMAW load power. When various types of welding any special requirements, can be supplemented in the standard basis. |
|