Welder exam method and project code

Industry News | 2018-06-27

Welder examination method classification

1, electrode arc welding: SMAW;

2, tungsten electrode gas shielded welding: GTAW;

3, gas welding: OFW;

4, submerged arc welding: SAW;

5, gas metal arc welding: GMAW (solid wire);

6, gas metal arc welding: CFAW (cored wire);

7. Electroslag welding: ESW

8, plasma welding: PAW

9, gas vertical welding: EGW

10. Friction welding: FRW

11. Stud arc welding: SW

Specimen steel number and code

1. FeI (carbon steel): Q235, 20#, 20g, 20R, L210, S205, HP265, etc.

2. Fe II (low alloy steel): 16MnR, 12Cr1MoV, 20MnMoD, S240, L245, HP295, etc.

3, FeIII type (martensite, ferritic stainless steel): 1Cr5Mo, 0Cr13, 1Cr17, 1Cr9Mo and so on.

4, FeIV (Austenite, duplex stainless steel)

5, copper and copper alloys: CuI ~ CuV

6, nickel and nickel alloys: NiI ~ NiV

7. Aluminum and Aluminum Alloys: AI~AIV

8, titanium and titanium alloys: TiI ~ Ti II 0Cr18Ni9Ti, 0Cr19Ni13Mo3, 0Cr25Ni20, 1Cr23Ni18 and so on.


Specimen form, location and code number

1. Location and code of plate specimens: 1G (flat welding); 2G (horizontal welding); 3G (vertical welding); 4G (overhead welding).

2, tubular specimen location and code: 1G (horizontal rotation); 2G (vertical fixation); 5G (horizontal fixed); 6G (45 ° welding up).

3, tube plate corner joint specimen location and code: 2FRG (horizontal rotation); 2FG (vertical fixed flat welding); 4FG (vertical fixed overhead welding); 5FG (horizontal fixed); 6FG (45 ° welding up).


Welding electrode type, code name and application range

1, Fe f1: titanium calcium type includes E4303, E5003, E5503-B1 and so on.

2, Fe f 2: cellulose type including E4310, E5011 and so on.

3, Fe f 3; titanium, titanium calcium type includes G202, G302 and so on.

4, Fe f 3J; low hydrogen type includes E4315, E5015, E5016, E5515-B2, G307 and so on.

5, Fe f 4: titanium calcium type includes E308L-16, E308-16, E309-16 and so on.

6, Fe f 4J: Low hydrogen type includes E308-15, E347-15, E309-15 and so on.


Welding process factor code

1, manual welding

(1) No filler metal welding wire: 01

(2) Filled solid wire: 02

(3) Filled flux cored wire: 03

(4) With back protective gas: 10

(5) No back protective gas: 11

(6) Gas shielded welding current category and polarity (DC positive connection): 12

(7) Gas shielded welding current category and polarity (DC reverse connection): 13

(8) Category and polarity of gas shielded welding current (AC): 14

(9) Gas metal arc welding (jet arc): 15

(10) Gas metal arc welding (short arc): 16

2, mobile access

(1) Tungsten gas shielded arc welding with automatic voltage regulation system: 04

(2) Tungsten gas shielded welding without automatic voltage regulation system: 05

(3) With automatic tracking system: 06

(4) No automatic tracking system: 07

(5) Weld Beads on Each Side: 08

(6) There are many welds on each side of the groove: 09

(7) Various welding methods for visual control: 19

(8) Remote control of various welding methods: 20

Test piece weld and weldment weld thickness and diameter

1. When the thickness of the test piece is less than 12: It applies to the minimum thickness of the weldment metal 1.5mm, the maximum value is 2t;

2. When the thickness of the test piece is ≥12; the minimum thickness of the weld metal is 1.5mm; the maximum value is not limited.

3, the tube by the test outside the D; <25, the minimum for the D, the maximum limit.

4, the tube by the test piece outside the D; 25 ≤ D <76, the minimum value of 25, the maximum limit.

5, the tube by the test outside the D; ≥ 76, the minimum value of 76, the maximum limit.


Tube plate corner joint test piece is suitable for weldment range

1, outside the tube by; D <25, the minimum is D, the maximum value is not limited, the thickness of the wall is not limited.

2, outside the tube by; 25 ≤ D <76, the minimum is D, the maximum value is not limited, the thickness of the wall is not limited.

3, outside the tube; ≥ 76, the minimum value is 76, the maximum value is not limited, the wall thickness is not limited.

4, Weldment weld metal thickness; When So<12, the minimum is unlimited, the maximum is 2t. When So≥12, the minimum value is not limited, and the maximum value is not limited.

Note: When So≥12, t should not be less than 12mm, and the weld must not be less than 3 layers.

Qualified project code identification

Item code: (1)-(2)-(3)-(4)/(5)-(6)/(7)/(8)

(1) Welding method;

(2) Metal category and code;

(3) specimen form and location;

(4) weld metal thickness;

(5) Diameter of the test piece;

(6) Types and codes of welding rods;

(7) Element code.

1. Electrode arc welding consists of 5 symbols;
Welding method + base metal type and code + specimen position + specimen specification + welding consumable type and element; electrode arc welding plate representation; SMAW-FeII-2G-12-Fef3J;

2. Tungsten gas shielded welding consists of 5 symbols
Welding method + parent metal type and code + specimen position + specimen specification + element; tungsten gas shielded gas tubular representation; GTAW-FeII-5G-5/38-Fefs-02/11/12;

3, gas welding consists of 5 symbols
Welding method + parent metal type and code + specimen form + specimen specification + element; air welded tubular representation; OFW-FeI-2G-3.5/51-02;

4, argon arc base + electrode welding cover welding combination welding
Tubular: welding method + base metal type and code + specimen form and position + specimen thickness / specification + element / electrode type;
Tubular: GTAW-FeII-5G-2/38-Fe fs-02/11/12 and SMAW-FeII-5G(K)-3/38-Fe F3J;
Plate shape: welding method + base metal type and code + specimen form and position + specimen specification + element / electrode type;
Plate: GTAW-FeII-1G-3-Fe fs-02/11/12 and SMAW-FeII-1G(K)-9-Fe F3J;
Note: (K) denotes gasketed welding; welds consisting of double-sided welding and different welding methods; for example, argon-arc bottoming/welded-welding filling covers are regarded as “pad welding”.

5, MIG welding consists of 4 symbols
Welding method + base metal type and code + test piece form and position + material specification: GMAW-FeII-2G-12 plate shape: GMAW-FeII-5G-10/219;

6. Submerged arc welding consists of 3 symbols. Welding method + welding position + element code SAW-IG(K)-07/09/19

Blue Collar Elite Club
点击图标下载 App