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작성자자율주행신 조회 69회 작성일 2021-10-14 07:06:58 댓글 0

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[용접교육] 용접봉 기호 의미 쉽게 설명드립니다. Electrode and rod Classification Designators for SMAW and GTAW

The American Welding Society (AWS) numbering system can tell a welder quite a bit about a specific stick electrode including what application it works best in and how it should be used to maximize performance. With that in mind, let's take a look at the system and how it works.

The prefix "E" designates an arc welding electrode. The first two digits of a 4-digit number and the first three digits of 5-digit number indicate minimum tensile strength. For example, E6010 is a 60,000 psi tensile strength electrode while E10018 designates a 100,000 psi tensile strength electrode.

E

60

1

10

Electrode

Tensile Strength

Position

Type of Coating and Current


The next to last digit indicates position. The "1" designates an all position electrode, "2" is for flat and horizontal positions only; while "4" indicates an electrode that can be used for flat, horizontal, vertical down and overhead. The last 2 digits taken together indicate the type of coating and the correct polarity or current to use. See chart below:



Digit Type of Coating Welding Current
0 High cellulose sodium DC+
1 High cellulose potassium AC, DC+ or DC-
2 High titania sodium AC, DC-
3 High titania potassium AC, DC+
4 Iron powder, titania AC, DC+ or DC-
5 Low hydrogen sodium DC+
6 Low hydrogen potassium AC, DC+
7 High iron oxide, iron powder AC, DC+ or DC-
8 Low hydrogen potassium, iron powder AC, DC+ or DC-


As a welder, there are certain electrodes that you will most likely see and use time and time again as you go about your daily operations. A DC machine produces a smoother arc. DC rated electrodes will only run on a DC welding machine. Electrodes which are rated for AC welding are more forgiving and can also be used with a DC machine. Here are some of the most common electrodes and how they are typically used:

E6013
This all-position, AC electrode is used for welding clean, new sheet metal. Its soft arc has minimal spatter, moderate penetration and an easy-to-clean slag. Lincoln Fleetweld® 37 is most common of this type.

E7018
A low-hydrogen, usually DC, all-position electrode used when quality is an issue or for hard-to-weld metals. It has the capability of producing more uniform weld metal, which has better impact properties at temperatures below zero. The Lincoln products are typically Jetweld® LH-78 or our new Excalibur® 7018.

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The coatings of welding electrodes for welding mild and low alloy steels may have from 6 to 12 ingredients, which includes:

Cellulose – to provide a gaseous shield with a reducing agent in which the gas shield surrounding the arc is produced by the disintegration of cellulose
Metal carbonates – to adjust the basicity of the slag and to provide a reducing atmosphere
Titanium dioxide – to help form a highly fluid, but quick-freezing slag and to provide ionization for the arc
Ferromanganese \u0026 ferrosilicon – to help deoxidize the molten weld metal and to supplement the manganese content and silicon content of the deposited weld metal
Clays \u0026 gums – to provide elasticity for extruding the plastic coating material and to help provide strength to the coating
Calcium fluoride – to provide shielding gas to protect the arc, adjust the basicity of the slag, and provide fluidity and solubility of the metal oxides
Mineral silicates – to provide slag and give strength to the electrode covering
Alloying metals including nickel, molybdenum, and chromium – to provide alloy content to the deposited weld metal
Iron or manganese oxide – to adjust the fluidity and properties of the slag and to help stabilize the arc
Iron powder – to increase the productivity by providing extra metal to be deposited in the weld.
안안 : 단순하게 알고있던걸 규격에 따라 설명해주셔서 굉장히 유익합니다! 아는만큼 보인다! 많이 볼수 있을것같습니다.
플랜트 김소장 : 좋은 댓글 고맙습니다. 동료분들과 함께하면 더욱 좋습니다. 감사합니다.

용접기능사 필기준비 35 용접재료 1 (결정구조와종류)


조조 : 좋은 영상 감사합니다
김경남 : 감사합니다.
품팔이꾼 : 나머지 다 못맞아서 떨어졌습니다.. 3주뒤에 또 시험이네요 이거라도 좀 외워야겠어여
부자노동자 : 3주뒤에 시험이 있지요^^ 기출문제 어풀을 많이 풀어보세요. 기출문제 영상도 제작해서 올려드리겠습니다^^

#초보용접 #각파이프종류 #아크용접 #알면지식_모르면ㅂㅂ

초보용접사 및 철공(각파이프)을 알고자 하는 분들을 위해 아는 척좀 했습니다.
알찬 영상으로 구독자 분들과 제 영상을 보시는 분들에게 제가 알고 있는 지식을 공유합니다.
보약남 : 유용한 정보를 제공해 주셔서 감사합니다
세종이 : 이건 전문학교에서 배워야하는거아닌가요?ㅎㅎ 잘배워갑니다^^
삼남매아빠 : 오늘도 잘배우고 갑니다 ^^
Da Hong : 궁금해서 그러는데요.. 용접하는 중에 맨손으로 용접 하는 파이프 잡고 용접하면 감전되나요?
박민우 : 잘 보고 갑니다^^

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