Fusion refining agent for 5-series high-magnesium aluminum alloy welding wire blank and preparation method thereof

Abstract

The invention discloses a fusion refining agent for a 5-series high-magnesium aluminum alloy welding wire blank. The agent comprises, in parts by weight, the following components of, 18-32 parts of potassium chloride, 35-55 parts of magnesium chloride, 5-14 parts of potassium fluoaluminate, 3-8 parts of potassium fluosilicate, 3-8 parts of potassium carbonate, 0.5-4 parts of fluorinated rare earth, 1-5 parts of potassium fluorotitanate, 1-5 parts of potassium fluoroborate, 2-8 parts of manganese chloride, and 2-6 parts of barium sulfate. According to the agent, the contents of hydrogen, inclusions and impurity element Fe of welding wire blank melt are reduced, meanwhile, grains are refined, and produced welding wires are guaranteed to be free of welding defects.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy refining agents, in particular to a melting and refining agent for 5 series high-magnesium aluminum alloy welding wire blanks and a preparation method thereof. Background technique [0002] The 5-series high-magnesium aluminum alloy welding wire mainly refers to the aluminum-magnesium alloy welding wire with the mass fraction of Mg greater than 3.0%, such as SAl5356, SAl 5183, SAl 5087, SAl 5556, SAl 5654, etc. This type of welding wire has good welding compatibility. As a general-purpose welding material, it is widely used in non-heat-treated Al-Mg systems (such as 5083, 5052, etc.) and heat-treatable Al-Mg-Si systems (such as 6061, 6082 etc.), Al-Zn-Mg series (such as 7N01, 7003) and other medium and high-strength aluminum alloys are the most widely used aluminum alloy welding wires for high-end equipment welding and manufacturing of aluminum alloys, such as high-speed trains, pressure ve...

AI Technical Summary

Problems solved by technology

These characteristics seriously deteriorate the internal quality (such as hydrogen content, oxide inclusions, grain size) and processing performance of the 5 series high magnesium aluminum alloy welding wire billet, resulting in the occurrence of pores and inclusions in the welding process of the domestic 5 series high magnesium aluminum alloy welding wire. Defects such as slag and cracks seriously affect the safety and reliability of welded joints. High-end aluminum alloy welding wire has been monopolized by foreign companies