[용접 자격증 피복아크용접 4] 연결부 안달라붙는 방법 (기다리는 예열은 틀렸습니다)#용접기능장 #용접산업기사 #용접 #피복아크용접기능사 #용접자격증#티그용접 #co2용접
굿울산 마이스터배관용접학원
16,767 views
[Welding Certification Shielded Metal Arc Welding 4] How to Prevent Sticking at Joints (Waiting for Preheating Is Wrong)
"Standing still with the arc running to heat the base metal?" ❌
Many people wait to form a back bead at the joint (seam), only to have the welding rod submerged in a pool of molten metal that has surged up, causing it to stick.
The key to successful joints is not 'waiting for preheating,' but 'instant molten metal dispersion'!
We will perfectly explain the practical mechanism for spreading the molten metal in the direction of travel and entering the keyhole in just 0.5 seconds, before the metal rises.
Key Summary:
Correcting Bad Habits: Many beginners make the mistake of trying to shorten the arc length immediately at the joint, causing the welding rod to stick (1:03-1:27). Beginners must advance while keeping the arc slightly lifted after generating it (2:36-3:05).
*Correcting Bad Habits:* Core Techniques for the Connection (Step 3):
Arc Generation and Maintenance: Do not narrow the arc immediately after generation; instead, lift it slightly to transfer heat (3:32).
Spreading the Molten Metal: At the end of the connection, mix in a slight weaving motion to spread the molten metal to the sides (4:04-4:12).
Connection and Entry: Use the molten metal to melt the root area. Repeat the forward and backward connection about three times to secure a pool of molten metal, then shorten the arc length to enter the keyhole (5:14-6:20).
Conclusion: If you stop, the weld will be submerged and stuck in the molten metal. The key to success is to disperse and spread the molten metal in an instant, then cover the keyhole with the welding rod and naturally enter the back bead line (6:47-7:43).
*Key Techniques for the Connection (Step 3):*
*Arc Generation and Maintenance:*
After generating the arc, do not close it immediately; instead, lift it slightly to transfer heat (3:32). 💡 [Key Formula Summary]
1. Initiate Arc & Hold Slightly (0.1~0.2 seconds)
Maintain the arc length without pressing the electrode too close.
2. Spread the Molten Metal (Gently push in the direction of travel)
Spread the molten metal just enough to melt the root area, preventing it from pooling in one spot.
3. Enter the Keyhole
Enter the back bead while covering the size of the keyhole with the electrode.
"If you stop, you will be submerged in the molten metal; you must spread the molten metal and then cover the size of the keyhole with the electrode to open the back bead!"
#ShieldedMetalArcWelding #BackBead #BackBead #ButtWelding #WeldingSticking #WeldingTechnicianPracticalExam #MasterPlumbing #MasterWelding #ArcWelding #WeldingKnowHow #MeisterPlumbingWeldingAcademy #WeldingTips #ConnectionWelding
18 Comments
계속해서 가접부에서 용접이 끊어졌거든요.
시작부에서 이미 다 조져놓으니, 모재를 집어던지고 싶어진 게 한두 번이 아닙니다.
용접기가 거지같아서 아크가 끊어진다고 생각했는데, 제 몸뚱이가 잘못이었습니다.
너무나 감사합니다.
[용접 자격증 피복아크용접 4] 연결부 안달라붙는 방법 (기다리는 예열은 틀렸습니다)#용접기능장 #용접산업기사 #용접 #피복아크용접기능사 #용접자격증#티그용접 #co2용접
굿울산 마이스터배관용접학원
16,767 views
[Welding Certification Shielded Metal Arc Welding 4] How to Prevent Sticking at Joints (Waiting for Preheating Is Wrong)
"Standing still with the arc running to heat the base metal?" ❌
Many people wait to form a back bead at the joint (seam), only to have the welding rod submerged in a pool of molten metal that has surged up, causing it to stick.
The key to successful joints is not 'waiting for preheating,' but 'instant molten metal dispersion'!
We will perfectly explain the practical mechanism for spreading the molten metal in the direction of travel and entering the keyhole in just 0.5 seconds, before the metal rises.
Key Summary:
Correcting Bad Habits: Many beginners make the mistake of trying to shorten the arc length immediately at the joint, causing the welding rod to stick (1:03-1:27). Beginners must advance while keeping the arc slightly lifted after generating it (2:36-3:05).
*Correcting Bad Habits:* Core Techniques for the Connection (Step 3):
Arc Generation and Maintenance: Do not narrow the arc immediately after generation; instead, lift it slightly to transfer heat (3:32).
Spreading the Molten Metal: At the end of the connection, mix in a slight weaving motion to spread the molten metal to the sides (4:04-4:12).
Connection and Entry: Use the molten metal to melt the root area. Repeat the forward and backward connection about three times to secure a pool of molten metal, then shorten the arc length to enter the keyhole (5:14-6:20).
Conclusion: If you stop, the weld will be submerged and stuck in the molten metal. The key to success is to disperse and spread the molten metal in an instant, then cover the keyhole with the welding rod and naturally enter the back bead line (6:47-7:43).
*Key Techniques for the Connection (Step 3):*
*Arc Generation and Maintenance:*
After generating the arc, do not close it immediately; instead, lift it slightly to transfer heat (3:32). 💡 [Key Formula Summary]
1. Initiate Arc & Hold Slightly (0.1~0.2 seconds)
Maintain the arc length without pressing the electrode too close.
2. Spread the Molten Metal (Gently push in the direction of travel)
Spread the molten metal just enough to melt the root area, preventing it from pooling in one spot.
3. Enter the Keyhole
Enter the back bead while covering the size of the keyhole with the electrode.
"If you stop, you will be submerged in the molten metal; you must spread the molten metal and then cover the size of the keyhole with the electrode to open the back bead!"
#ShieldedMetalArcWelding #BackBead #BackBead #ButtWelding #WeldingSticking #WeldingTechnicianPracticalExam #MasterPlumbing #MasterWelding #ArcWelding #WeldingKnowHow #MeisterPlumbingWeldingAcademy #WeldingTips #ConnectionWelding
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