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Carbon and Low Alloy Steel Rods for Oxyfuel Gas Welding

by Saykat
September 11, 2022
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Carbon and Low Alloy Steel Rods are standard gas welding rods for gas welding processes.

  1. Type of welding wire

These standard electrodes are classified according to the mechanical properties of the weld.

Note: Welding is a job with a high income potential for people working in this job. Especially with people with high welding skills. You can learn about electric and gas welding. And find more welding equipment at our website : https://www.udo.co.th/product/detail/yawata-316l-16

2.Details and purpose of using welding wire

gas welding wire No shielding flux that will affect the usability of the wire. Therefore, the ability to connect upright posture and overhead posture. Therefore, it depends on the skill of the welder. And will affect the chemical properties of the welding wire to some extent.

Class R 45 is a low carbon steel welding wire. used for welding steel It has a minimum tensile stress of 45 ksi (310 Mpa).

Class R 60 Welding wires used for gas-oxygen welding. for welding carbon steel It has a minimum tensile strength of 60 ksi (415 Mpa). R 60 welding wire contains carbon steel.

Class R 65 welding wires used for welding with fuel gas with oxygen For welding carbon steel and low alloy steel Has a minimum tensile strength of 65 ksi (450 Mpa). R 65 welding wire may be composed of carbon steel or low alloy steel.

Class R 100 welding rods used for gas-oxygen welding. for welding low alloy steel With a minimum tensile stress of 100 ksi (690 Mpa), the welder must consider the difference in post weld heat treatment between the weld and the work metal.

3.2 Flux Clad Carbon Steel Electric Welding Wire Specification For manual arc welding (SMAW) AWS A 5.1-91 standard.

(Carbon Steel Electrodes for Shielded Metal Arc Welding)

  1. Classification of welding wires

welding wire according to this standard It is divided into categories according to the following components:

1) Type of power

2) Type of cladding flux

3) welding position

4) mechanical properties of the weld

Appendix symbol

example

EXXXX-1 HZ R

R = Designed for use with E7018M low hydrogen electrodes that meet the suction test standard.

        Moisture (Absorbed Moisture Test) when the wire is in a humid atmosphere for a long time.

HZ = HZ is located at the end of the 4th digit, after -1 indicates the amount of hydrogen diffusion.

         in the weld

“Z” is the amount of hydrogen (Z i.e. 4, 8 or 16) units of hydrogen content ml/heavy weld.

        100 grams

   3.3 Carbon steel electrode and fill wire specification For shielded gas welding processes (Mig, Tig, Plasma) AWS A5.18-93 standard.

(Carbon Steel and Rods for Gas Shielded Arc Welding)

This welding wire standard Carbon Steel Electric Welding Wires (Solid Composite Stranded and Composite Metal Cored) and Rods are required for migrating (GMAW), TIG (GTAW) and Plasma (PAW) welding processes.

  1. Type of welding wire

Solid rods and rods according to this standard Will be classified according to the chemical composition of the welding wire. and mechanical properties for Composite Stranded Electrodes and Composite Metal Cored Electrodes in accordance with this standard. Classified according to chemical composition and mechanical properties of the weld

 2.Carbon steel electric welding wire specification For welding flux cored wires AWS A5.20-79

(Carbon Steel Electrodes for Flux Cored Arc Welding)

This welding wire standard addresses the requirements of carbon steel welding wires. For welding with flux cored electrodes Used to weld carbon and low alloy steels.

  1. Type of welding wire

The classification of welding wires depends on the following elements.

(1) Characteristics of using CO gas to cover the weld

(2) suitability for single-line welding or stacking welding

(3) type of welding current

(4) welding position

(5) mechanical properties of the weld

AWS A5.17-89 Carbon Steel Welding Wire and Flux Standard Specification

(Carbon Steel Electrodes and Fluxes for Submerged Arc Welding)

  1. Type of welding wire

Welding wire under flux Classified according to chemical ingredients for under-flux welding

  1. Flux symbol

Flux classification is based on the mechanical properties of the weld.

example

F7A6-EM12K is the complete symbol. Welds obtained from welding wire and flux in the as-welded state yield a minimum tensile stress of 70,000 PSI (480 MPa) and a minimum Charpy V-notch Impact Strength of 20 ft-lbs (27J) at -60 ºF ( -51 ºC) when welded with EM12K electrodes under these conditions.

The original wire standard for gas welding for non-alloy and low-alloy steels of Germany (DI 8554 part 1 May 1986).

This gas welding wire standard It has been prepared by the welding association of the country. Germany (German Welding Society)

The % symbol used in this standard represents the percentage of weight.

example

Gas filling wire (G) Class I!! Symbols can be written as follows:

 

Filler rod DIN 8554-G III

 

  1. Types of gas welding wire (Classification) and their use

Classification of gas-filled wires according to chemical composition It is divided into 7 types in order to be able to choose according to the type of work. By providing the wire fill to the work piece with the words Tensile Strength and Yield Strength equal. If the work requires Toughness, this should be agreed between the manufacturer and the purchaser. For G class VII wire, it is a welding wire for welding railroad tracks.

Work materials that are not fully utilized according to the material’s properties, choose to use basic filler wire. that has properties that have properties that are put into practice

  1. The behavior of the fill wire during welding

All 7 types of fill wire behave differently during welding.

  1. The original wire size is gas welding.

Gas filling wire has a standard length of 1000 mm. and sizes range from 1.6-5 mm.

  1. Marking on the fill wire

Gas welding wire must be clearly and durable marked on the fill wire. to show the type of wire fill The marking must be nailed every 400 mm of length and have a color code on the tip of the fill wire at the end of the fill wire. In the case of 1.6 mm. wire, color codes will be used instead of marking.

 

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