Heat treatment technique of aluminum alloy casting part
A technology for castings and aluminum alloys, which is applied in the field of heat treatment of aluminum alloy castings, can solve problems such as increased casting costs, overheating of castings, and unstable heating temperature, so as to achieve the effect of reducing costs and ensuring normal operation
Inactive Publication Date: 2013-12-25
刘强
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Problems solved by technology
In actual operation, the solid solution treatment is carried out according to the standard 535±5°C, but overheating phenomenon often occurs on the treated castings, that is, the surface of the castings is molten due to the unstable heating temperature locally, which not only improves the Improve the repair welding rate of castings, but also increase the cost of castings
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Embodiment Construction
[0013] A heat treatment process for aluminum alloy castings, specifically comprising the following processes:
[0014] 1. Feeding process: Melt the unremelted return material and the remelted return material, stir evenly, and add 20Mg at 700°C;
[0015] 2. Refining: Refining by argon gas and standing for 15 minutes; then skimming.
[0016] 3. Deterioration: Use long-acting modifiers for deterioration.
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The invention relates to a heat treatment technique of an aluminum alloy casting part, which comprises the following steps: A. feeding: melting non-remolten foundry returns and remolten foundry returns, stirring uniformly, and adding 10Mg at 680-700 DEG C; B. refinement: refining in argon, standing for 12-15 minutes, and drossing; and C. modification: carrying out modification by using a long-acting modifier. The technique provided by the invention lowers the material cost by about 10%, is free from the restriction of the alloy material market, and effectively ensures the normal proceeding of the production.
Description
technical field [0001] The invention relates to a pouring process, in particular to a heat treatment process for aluminum alloy castings. Background technique [0002] The heat treatment process of aluminum alloy castings mainly includes solution treatment and complete artificial aging treatment, that is, T6 treatment, and the corresponding aluminum alloy material is ZL101A. Under T6 treatment conditions, it is generally required that the solid solution heating temperature in the heat treatment furnace is 535±5°C, and the holding time is 6-12 hours; after the treatment, immediately perform cold foot treatment, the cooling medium is water, and the temperature is 65-100°C , followed by complete artificial aging treatment, the heating temperature is 180±5°C, the holding time is 3-8 hours, and air cooling is sufficient after artificial aging treatment. In actual operation, the solid solution treatment is carried out according to the standard 535±5°C, but overheating phenomenon ...
Claims
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IPC IPC(8): C22F1/04C22C1/02
Inventor 刘强
Owner 刘强