Method for preventing 5XXX aluminum alloy cast ingot from surface ruffle

Abstract

A method for preventing a 5XXX aluminum alloy cast ingot from surface ruffle belongs to the aluminum alloy cast ingot processing technology; the additive amount of the trace element Ti of the aluminum alloy is controlled to range from 0.055 to 0.1 / % of the gross weight of the aluminum alloy solution; Ti / B ranges from 12 to 15; the cross-section temperature gradient in a cast ingot temperature field is less than 0.05 DEG C / mm, and the casting speed is 100-120 mm / min. The method eliminates the generation of the surface ruffle of the aluminum alloy cast ingot, and is characterized by neat cast ingot surface, high smooth finish, uncracked rolling, stable mechanical property, high yield and simple processing technique.

Description

technical field [0001] A method for preventing surface wrinkles of 5XXX aluminum alloy ingots belongs to the processing technology of aluminum alloy ingots, and mainly relates to a method for preventing surface wrinkles of 5XXX aluminum alloy ingots. Background technique [0002] 5xxx aluminum alloy is one of the fastest-growing aluminum alloys in China. It is widely used in the transportation industry, such as rail transportation, automobile industry, shipbuilding, Ships, containers, aerospace, etc. However, many key technical problems in the melt quality treatment and casting process of this series of alloys have not been completely resolved, which has seriously affected the production of 5xxx aluminum alloys. Vertical wrinkle defects are prone to occur, and the ingot is easy to crack at this defect, resulting in crack defects, which seriously affect the yield, such as surface wrinkles and resulting cracks, resulting in large loss of raw materials and a yield of only 60%....

AI Technical Summary

Problems solved by technology

However, many key technical problems in the melt quality treatment and casting process of this series of alloys have not been completely resolved, which has seriously affected the production of 5xxx aluminum alloys. Vertical wrinkle defects are prone to occur, and the ingot is easy to crack at this defect, resulting in crack defects, which seriously affect the yield, such as surface wrinkles and resulting cracks, resulting in large loss of raw materials and a yield of only 60%. The cracks further expand during the process, and the mechanical properties of the finished product are low, which is difficult to meet the needs of use, which restricts the development of related industries to a certain extent.