Types and selection principles of solder
Release time:
2022-12-09
【Summary Description】 Types and selection principles of solder 1. For workpieces or structures that bear static or general loads, electrodes with equal tensile strength and base metal are usually selected, which is the principle of equal strength. For example, welding 20, such as low carbon steel or tensile strength in the left and right steel can choose a series of welding rod. And welding, such as tensile strength in the range of steel, select a series of welding rod on the line. Some people think that the choice of high tensile strength welding rod low tensile strength of the material is good, this concept is wrong, usually high tensile strength of steel plastic indicators are poor, simply the pursuit of weld metal tensile strength, reduce its plasticity, often not necessarily beneficial. 2. Welding workpieces or structures that work in special environments, such as wear resistance, corrosion resistance, and high mechanical properties at high or low temperatures, should be selected to ensure that the performance of the deposited metal is similar to or similar to the base metal Electrode, this is the principle of equivalence. For example, when welding stainless steel, stainless steel electrode should be selected; when welding heat-resistant steel, heat-resistant steel electrode should be selected. 3. The principle of equal conditions. According to the working conditions and characteristics of the workpiece or welding structure to choose the most. For example, for welding workpieces that need to withstand dynamic load or impact load tea, low-hydrogen alkaline electrodes with high impact toughness of deposited metal should be selected. On the contrary, when welding general structure, acid electrode should be selected. Although the selection of welding rod should also consider the site power supply, site equipment conditions, economy and welding efficiency, but these are relatively secondary issues, should be decided according to the actual situation. What are welding wires, electrodes, fluxes and solders? What are they used for in welding? Hope to adopt, thank you.
Types and selection principles of solder
1. For workpieces or structures that bear static or general loads, electrodes with equal tensile strength and base metal are usually selected, which is the principle of equal strength.
For example, welding 20, such as low carbon steel or tensile strength in the left and right steel can choose a series of welding rod. And welding, such as tensile strength in the range of steel, select a series of welding rod on the line.
Some people think that the choice of high tensile strength welding rod low tensile strength of the material is good, this concept is wrong, usually high tensile strength of steel plastic indicators are poor, simply the pursuit of weld metal tensile strength, reduce its plasticity, often not necessarily beneficial.
2. Welding workpieces or structures that work in special environments, such as wear resistance, corrosion resistance, and high mechanical properties at high or low temperatures, should be selected to ensure that the performance of the deposited metal is similar to or similar to the base metal Electrode, this is the principle of equivalence.
For example, when welding stainless steel, stainless steel electrode should be selected; when welding heat-resistant steel, heat-resistant steel electrode should be selected.
3. The principle of equal conditions. According to the working conditions and characteristics of the workpiece or welding structure to choose the most. For example, for welding workpieces that need to withstand dynamic load or impact load tea, low-hydrogen alkaline electrodes with high impact toughness of deposited metal should be selected. On the contrary, when welding general structure, acid electrode should be selected.
Although the selection of welding rod should also consider the site power supply, site equipment conditions, economy and welding efficiency, but these are relatively secondary issues, should be decided according to the actual situation.
What are welding wires, electrodes, fluxes and solders? What are they used for in welding?
Hope to adopt, thank you.
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