一. Introduction
Welding rod is an indispensable and important material in welding work, which plays the role of filling metal and conducting current during the welding process. This blog will introduce the composition, classification, use, and maintenance tips of welding rods in detail to help you better understand and use welding rods.
二. the composition of the welding rod
The electrode is mainly composed of two parts: the core and the coating. The welding core is the main part of the welding rod and is made of steel wire with a certain length and diameter that is used to conduct the welding current and melt as a filler metal. The coating is a coating layer applied to the surface of the welding core, which decomposes and melts during the welding process to form gas and slag, which plays a role in mechanical protection, metallurgical treatment and improvement of process performance.
三. the classification of welding rods
Depending on the use and performance, welding rods can be divided into a variety of types, including but not limited to the following:
1. Structural steel electrode: suitable for the welding of ordinary low-alloy steel, with certain mechanical properties.
2. Molybdenum and chromium-molybdenum heat-resistant steel electrodes: with different degrees of high temperature working ability, suitable for welding in high temperature environment.
3. Stainless steel electrode: It has corrosion resistance and certain mechanical properties at room temperature, high temperature or low temperature, and is suitable for welding stainless steel materials.
4. Aluminum and aluminum alloy welding rods: used for welding, welding repair or surfacing welding of aluminum and aluminum alloys, suitable for the repair and manufacture of aluminum products.
In addition, there are many types of hardfacing electrodes, low-temperature electrodes, cast iron electrodes, etc., to meet different welding needs.
四. the use of welding rods
When using welding rods, you need to follow these steps:
1. Preparation: Wear protective eyewear, gloves, and clothing to ensure that there are no combustibles or flammable gases around the work area.
2. Prepare the workpiece: Clean the workpiece to be welded, making sure that there is no grease, rust or other impurities on the surface.
3. Select the appropriate electrode: select the appropriate electrode according to the material and welding requirements of the workpiece.
4. Welding power supply setting: Turn on the welding machine and adjust the welding current and voltage according to the diameter of the welding rod and the thickness of the workpiece.
5. Welding electrode ignition: align one end of the welding rod with the welding seam position of the workpiece, and ignite the welding rod with a lighter or igniter at the place where the electrode is in contact with the workpiece.
6. Welding skills: hold the electrode in your hand and align the other ends of the electrode with the weld, so that the electrode is at a certain angle to the weld and keep a certain distance. Through the melting and gushing of the welding rod, the weld is filled and the welding is completed.
一. Introduction
Welding rod is an indispensable and important material in welding work, which plays the role of filling metal and conducting current during the welding process. This blog will introduce the composition, classification, use, and maintenance tips of welding rods in detail to help you better understand and use welding rods.
二. the composition of the welding rod
The electrode is mainly composed of two parts: the core and the coating. The welding core is the main part of the welding rod and is made of steel wire with a certain length and diameter that is used to conduct the welding current and melt as a filler metal. The coating is a coating layer applied to the surface of the welding core, which decomposes and melts during the welding process to form gas and slag, which plays a role in mechanical protection, metallurgical treatment and improvement of process performance.
三. the classification of welding rods
Depending on the use and performance, welding rods can be divided into a variety of types, including but not limited to the following:
1. Structural steel electrode: suitable for the welding of ordinary low-alloy steel, with certain mechanical properties.
2. Molybdenum and chromium-molybdenum heat-resistant steel electrodes: with different degrees of high temperature working ability, suitable for welding in high temperature environment.
3. Stainless steel electrode: It has corrosion resistance and certain mechanical properties at room temperature, high temperature or low temperature, and is suitable for welding stainless steel materials.
4. Aluminum and aluminum alloy welding rods: used for welding, welding repair or surfacing welding of aluminum and aluminum alloys, suitable for the repair and manufacture of aluminum products.
In addition, there are many types of hardfacing electrodes, low-temperature electrodes, cast iron electrodes, etc., to meet different welding needs.
四. the use of welding rods
When using welding rods, you need to follow these steps:
1. Preparation: Wear protective eyewear, gloves, and clothing to ensure that there are no combustibles or flammable gases around the work area.
2. Prepare the workpiece: Clean the workpiece to be welded, making sure that there is no grease, rust or other impurities on the surface.
3. Select the appropriate electrode: select the appropriate electrode according to the material and welding requirements of the workpiece.
4. Welding power supply setting: Turn on the welding machine and adjust the welding current and voltage according to the diameter of the welding rod and the thickness of the workpiece.
5. Welding electrode ignition: align one end of the welding rod with the welding seam position of the workpiece, and ignite the welding rod with a lighter or igniter at the place where the electrode is in contact with the workpiece.
6. Welding skills: hold the electrode in your hand and align the other ends of the electrode with the weld, so that the electrode is at a certain angle to the weld and keep a certain distance. Through the melting and gushing of the welding rod, the weld is filled and the welding is completed.
