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작성자무교동낙지 조회 184회 작성일 2021-10-20 22:43:10 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.

#에듀넷#티클리어#대학온라인강의#에듀윌#ebslang#ebsi#해커스#기술사#플랜트엔지니어#플랜트산업협회#KOPIA#한국조선해양플랜트협회#한국플랜트학회#산업통상자원부#한국엔지니어링협회#삼성엔지니어링#삼성물산#대림건설#대우건설#한국가스공사#롯데건설#롯데케미칼#해외취업#sk에너지#sk화학#한화건설#SK건설#GS건설#현대엔지니어링#현대건설#KBR#FLOUR#BECHTEL#upstream#downstream#onshore#offshore#용접기능사#용접기능장#용접산업기사#용접기사#특수용접#용접기술사#플랜트교육#플랜트강의#해외건설#해외프로젝트#KOCW#수능강의#수능강의#수능인강#중등인강#깨봉#메가스터디#1타강사#수능특강#산업인력공단#특강#수능특강#일타강사#검정고시#추천인강#화공플랜트#발전플랜트#해양플랜트#DT#EPC#BTS#big hit#배관기초교육#배관정복#배관강의#배관강좌#플랜트학과#무료교육#무료강의#온라인교육#국비교육#국비무료#플랜트산업#중동취업#해외취업#국비지원무료교육#억대연봉직업#마이스터고#폴리텍대학교#기계공학과#화학공학과#서울대학교#연세대학교#고려대학교#서강대학교#성균관대학교#서울과학기술대학교#공업고등학교#KAIST#용접봉기호#용접봉표기방법#용접봉표기#electrode or rod#electrode classification designator#mandatory classification designator#optional supplemental designators#specification for carbon steel electrode for shielded metal arc welding# specification for stainless steel electrode for shielded metal arc welding#specification for carbon steel electrodes and rods for gas shielded arc welding# specification for low alloy steel electrodes and rods for gas shielded arc welding# Specification for Carbon and Low Alloy Steel Flux Cored Electrodes for Flux Cored Arc Welding and Metal Cored Electrodes for Gas Metal Arc Welding# specification for bare stainless stell welding electrodes and rods
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.

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이기홍 : 설명이 알기쉽게 또한
아주 상세하게 가르쳐 줘서
초보자들에게 많은 도움이
되겠습니다
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이정현 : 이리 저리 빵구만 내다 포기한 후 기술자 부른 경험이 있는데 명 강의에 저도 기술자 다 된 느낌입니다...ㅎㅎ

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