Smelting method for improving quality of ZL205A aluminum alloy casting
By controlling the elemental uniformity during the ZL205A aluminum alloy smelting process, the segregation problem caused by elemental non-uniformity during smelting was solved, thereby improving the casting quality and yield.
CN122445980APending Publication Date: 2026-07-24HARBIN DONGAN ENGINE GRP
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Patent Information
- Application Number
- CN202510116570.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-24
- Publication Date
- 2026-07-24
AI Technical Summary
Technical Problem
ZL205A aluminum alloy is prone to elemental inhomogeneity during the smelting process, which can lead to segregation defects in castings and affect casting quality and yield.
Method used
By controlling the order, temperature, and time of adding pure aluminum and master alloy, combined with uniform stirring, an initial molten pool with uniform elements is formed. Master alloy is added at different stages to prevent the segregation of Ti, Cd, and Cu elements and ensure the uniformity of the alloy melt composition.
Benefits of technology
It significantly reduced segregation defects in ZL205A alloy castings, improved casting quality and yield, and reduced scrap losses.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention belongs to the technical field of aluminum alloy smelting, and relates to a smelting method for improving the quality of a ZL205A aluminum alloy casting. The aluminum alloy material is prepared from, by mass, 4.6%-5.3% of Cu, 0.3%-0.5% of Mn, 0.15%-0.35% of Ti, 0.15%-0.25% of Cd, 0.05%-0.20% of Zr, 0.005%-0.06% of B, 0.05%-0.30% of V and the balance Al. The method comprises the following steps: putting a high-purity aluminum ingot and an intermediate alloy of AlV, AlZr, AlTi and AlMn into a preheated crucible, and stirring after furnace charge is molten; and after the furnace burden is completely molten, the temperature is increased to 700-710 DEG C, and an AlCr intermediate alloy and an AlCu intermediate alloy are added and uniformly stirred. When the temperature rises to (740-760) DEG C, adding an AlTiB intermediate alloy, and uniformly stirring; and when the temperature of the alloy liquid is reduced to (710-720) DEG C, refining is carried out, and a rotating impeller is adopted for refining. And after full refining and standing, the ZL205A alloy liquid is obtained. According to the smelting technology, the segregation phenomenon of Cd and Cu elements in the smelting process of the ZL205A alloy is remarkably reduced, the quality of castings is improved, the loss problem of waste products is reduced, and the smelting technology is simple in method and easy to operate.
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