VIDEO 1 Dasar Pengelasan Las Listrik (SMAW)-Bagian Mesin Las, Kode Elektroda, Polaritas, Kekuatan.

Jati Suseno Teknik Pengelasan

17 Jul 202219:50

Summary

TLDRThis educational video script introduces various components of a welding machine, focusing on electrode holders and settings. It explains the factors influencing amperage selection, such as electrode diameter, welding position, and material thickness. The script also discusses different electrode types, their pulling strength, and applications, providing a foundation for beginners in welding to understand machine parts, electrode usage, and the importance of polarity in DC welding machines.

Takeaways

😀 The video script is an introduction to the parts of a welding machine, aimed at those who are learning about welding for the first time.
🔧 The main parts of the welding machine discussed include the holder, which is used to hold the electrode, and the radiant, which is a clamping part.
🔌 The script explains the process of setting up the machine, including how to adjust the amperage based on various factors such as electrode diameter and welding position.
📏 Amperage settings are influenced by the electrode diameter, with a 3.2 mm electrode having a recommended range of 60-100 amps for flat positions and 60-100 amps for vertical and overhead positions.
🔨 The choice of amperage also depends on the thickness of the material being welded, with thinner materials requiring lower amperage and thicker materials requiring higher amperage.
🔩 The script mentions different types of electrodes, such as E6013, E7018, and E6010, each with specific characteristics and recommended applications.
👷‍♂️ E6013 electrodes have a pulling force of 60,000 pounds per square inch and are suitable for all welding positions, while E7018 electrodes are used for fillet welding and have a higher pulling force.
🛠 The script also discusses the importance of electrode polarity in DC welding machines, with the electrode being the anode (positive) and the workpiece being the cathode (negative).
🔥 The heat distribution in welding is crucial, with 70% of the heat generated in the electrode and 30% in the workpiece, affecting the welding process and the choice of electrode for different applications.
💡 The video script concludes with a teaser for the next video, which will cover the ignition of the electrode and the techniques involved, especially for beginners in welding.

Q & A

What is the main topic of the video script?
-The main topic of the video script is an explanation of the parts of a welding machine, specifically for those who are learning about welding for the first time.
What are the main components of a welding machine mentioned in the script?
-The main components mentioned are the holder or electrode holder, the radiant or clamping mass part, and the electrode itself.
What is the purpose of the 'slime base' in the welding process?
-The 'slime base' is used to clamp the object that needs to be welded.
What factors influence the choice of amperage in welding?
-The factors influencing the choice of amperage include the diameter of the electrode being used, the welding position (flat, horizontal, vertical, or overhead), and the thickness of the material being welded.
What is the meaning of the term 'electrode' in the context of this script?
-In this context, 'electrode' refers to the consumable part of the welding machine that conducts electricity to the workpiece.
What does the term '60 13' represent in the script?
-'60 13' represents the specification of an electrode, indicating a diameter of 3.2 millimeters and a pulling force of 60,000 pounds per square inch.
What is the significance of the numbers '70 16' and '70 18' in the script?
-The numbers '70 16' and '70 18' represent different types of electrodes with varying pulling forces and compositions, suitable for different welding positions and applications.
Why is the electrode with the marking '70 18' said to be faster for filling?
-The electrode '70 18' is faster for filling because it contains iron powder, which allows for a quicker filling of the welding material.
What is the difference between DC and DCR in terms of heat distribution in welding?
-In DC, 70% of the heat is generated at the electrode, causing it to wear out quickly and is suitable for filler or cover positions. In DCR, 70% of the heat is generated at the workpiece, resulting in deeper penetration and is suitable for hot pass or penetration welding.
What is the recommended use for thin materials in welding according to the script?
-For thin materials, it is recommended to use electrodes with lower heat generation at the workpiece to prevent burning or creating holes in the material.

Outlines

00:00

🛠️ Introduction to Laser Machine Components

The speaker begins by greeting the audience and introducing the topic of the video, which is to explain the various parts of a laser machine, specifically for those who are new to welding or are learning about it for the first time. The main components discussed include the electrode holder, the radiant, and the slim base. The speaker also explains how to set up the machine for welding, including choosing the appropriate amperage based on factors such as the electrode's diameter and the welding position (flat, horizontal, or vertical). The summary also touches on the importance of selecting the right amperage for the thickness of the material being welded.

05:03

🔌 Understanding Electrode Specifications and Codes

This paragraph delves deeper into the specifications of the electrodes used in laser welding, including their pull strength and the meaning behind the codes that represent different types of electrodes. The speaker clarifies that the pull strength, denoted in pounds per square inch, indicates the pressure exerted on each surface area of the electrode. The codes are explained as well, with '1' signifying that the electrode can be used in all welding positions, '2' for flash welding, and '3' for club use. The paragraph also mentions different types of electrodes, such as those containing titanium and potassium, and their specific applications.

10:05

🔧 Exploring Electrode Usage and Machine Setup

The speaker continues by discussing the practical application of different electrodes, such as the 6013 and 7018 types, and their respective uses. The importance of the machine's polarity is highlighted, with the electrode being placed in the positive position for DC machines. The explanation includes the concept of electrode polarity, where the electrode is referred to as the 'positive terminal' or 'TP' in DC welding setups. The speaker also touches on the use of different electrodes for various welding positions and the significance of the machine's polarity in the welding process.

15:06

🔥 Heat Distribution in Welding and Its Applications

In the final paragraph, the focus shifts to the distribution of heat during the welding process and its implications for the choice of electrode and welding position. The speaker explains that 70% of the heat is generated in the electrode itself, which can lead to quicker electrode wear when used in filler or cover positions. Conversely, when using electrodes that direct 70% of the heat to the workpiece, the penetration is deeper, making them suitable for hot pass or penetration welding on thicker materials. The summary concludes with advice on choosing the right type of electrode based on the thickness of the material being welded, emphasizing the importance of understanding heat distribution for effective welding outcomes.

Mindmap

Keywords

💡Laser Machine

A laser machine, specifically in the context of this video, refers to a device that uses the heat generated by a laser beam to cut or engrave materials. It is central to the video's theme, which is to explain the different parts and functions of a laser machine. The script mentions various components of the machine, indicating its complexity and the importance of understanding each part for proper operation.

💡Electrode Holder

The electrode holder, also known as the 'holder mas' or 'pemegang elektroda' in the script, is a crucial part of the laser machine. It is used to secure the electrode in place during the welding or cutting process. The script emphasizes its role in the setup of the machine, indicating its importance in the machine's operation.

💡Ampere

Ampere, often shortened to 'amp' in the script, is a unit of electric current that affects the welding process. The video discusses how the choice of ampere is influenced by factors such as the diameter of the electrode and the position of the welding. For instance, the script mentions 'ampere 60-100' as a range for a specific electrode diameter, illustrating how it is selected based on the welding conditions.

💡Welding Position

Welding position is a term used to describe the orientation of the workpiece and the焊electrode during the welding process. The script refers to various positions such as 'flat', 'horizontal', 'vertical', and 'overhead', each of which requires different settings and techniques for optimal welding results.

💡Electrode

An electrode is a conductor through which electricity flows during the welding process. The script discusses different types of electrodes, such as 'E6013' and 'E7018', which have specific characteristics like diameter and tensile strength. The choice of electrode is critical as it affects the quality and properties of the weld.

💡Polarity

Polarity in the context of welding refers to the direction of electrical current flow between the electrode and the workpiece. The script mentions 'DC' (Direct Current) and explains that the electrode can be either positive or negative, which influences the heat distribution and the welding process. For example, the script refers to 'electrode positive TP' and 'electrode negative', indicating different setups for the welding machine.

💡Weld Penetration

Weld penetration is the depth to which the weld metal extends into the base material. The script discusses how the heat generated during welding, influenced by the choice of electrode and ampere, affects penetration. It mentions that 70% of the heat is generated at the electrode, which can lead to deeper penetration in the workpiece, especially when using certain electrodes for 'filler' or 'cover' positions.

💡Filler

A filler in welding is additional material that is used to fill the gap between the pieces being joined. The script mentions that certain electrodes, like 'E7018', are used in the 'filler' position due to their properties, such as higher heat generation, which can help in achieving a deeper and more effective weld.

💡Cover Pass

A cover pass in welding is the final pass made over a weld to improve its appearance and provide additional protection. The script suggests that certain electrodes are suitable for the cover pass due to their ability to generate heat that penetrates into the workpiece, resulting in a smooth and aesthetically pleasing finish.

💡Throat Thickness

Throat thickness refers to the smallest distance between the two surfaces being joined in a weld. The script uses the term 'tebal dari benda yang mau kita wash', which translates to 'the thickness of the material we want to weld', indicating the importance of considering the material's thickness when selecting welding parameters.

💡Welding Technique

Welding technique encompasses the methods and skills used to perform welding operations. The video script alludes to different techniques by discussing the setup of the laser machine, the selection of electrodes, and the adjustment of ampere. It also hints at future content on 'penyalaan elektroda', which translates to 'lighting the electrode', indicating a focus on the practical aspects of welding.

Highlights

Introduction to the various parts of a welding machine for beginners.

Explanation of the holder or electrode holder as the starting part of the welding machine.

Description of the radiant as the clamping mass part of the welding machine.

Slime base functionality for clamping objects to be welded.

Setting up the amperage for welding based on various factors.

Influence of electrode diameter on the amperage setting.

Different amperage settings for flat, horizontal, and vertical welding positions.

The importance of the object's thickness in choosing the welding amperage.

Understanding the meaning of electrode markings such as '60 13'.

Electrode strength in pounds per square inch and its significance.

Different types of electrodes and their applications in various welding positions.

The role of polarity in DC welding machines and its impact on the welding process.

Explanation of electrode polarity, positive and negative, in the welding process.

The effect of heat distribution in welding, with 70% heat at the electrode and 30% at the workpiece.

Practical applications of electrodes in filler and cover pass welding positions.

Advantages of using certain electrodes for thin workpieces to prevent burn-through.

Technical aspects of electrode composition, including the addition of iron powder for certain types.

Conclusion and invitation to continue learning about electrode lighting techniques in the next video.