Additive manufacturing device and additive manufacturing method

Abstract

The invention relates to an additive manufacturing device and an additive manufacturing method, and relates to the technical field of metallurgy. The additive manufacturing device comprises a spraying module, a crystallization module and a traction module, the spraying module comprises a first cavity, and at least one nozzle is arranged on the first cavity; the crystallization module comprises a second chamber, and the second chamber is provided with a second feeding hole; the traction module comprises a dummy bar head, and the dummy bar head is configured to be capable of moving in the second cavity; the nozzle penetrates through the second feeding port and extends into the second cavity, and the spraying direction of the nozzle faces the dummy bar head. Therefore, metal casting can be carried out in an additive manufacturing mode, and the quality of cast ingots is improved.

Description

technical field [0001] The present application relates to the technical field of metallurgy, in particular, to an additive manufacturing device and an additive manufacturing method. Background technique [0002] In the prior art, semi-continuous casting is a manufacturing method of large-sized aluminum alloy ingots routinely used in industry, mainly including two methods: one is hot top casting, and the other is direct chill casting. The advantage of hot-top casting is that the liquid level is stable during the casting process, but deep liquid pockets are formed in the center of the ingot, and the solidification structure contains a large area of ​​columnar crystal regions, and the macro-segregation from the center to the edge of the ingot is serious, and there is a high Internal stress remains, the ingot is easy to crack, and the yield is low, so it is not suitable for the production of aluminum alloy ingots with high alloy content. The advantage of direct chill casting is...

AI Technical Summary

Problems solved by technology

The advantage of hot-top casting is that the liquid level is stable during the casting process, but deep liquid pockets are formed in the center of the ingot, and the solidification structure contains a large area of ​​columnar crystal regions, and the macro-segregation from the center to the edge of the ingot is serious, and there is a high Internal stress remains, the ingot is easy to crack, and the yield is low, so it is not suitable for the production of aluminum alloy ingots with high alloy content

The advantage of direct chill casting is that it can greatly reduce the depth of the liquid cavity at the center of the ingot, thereby reducing the macro-segregation and internal stress of the ingot; also inevitable

Therefore, it is extremely difficult to prepare large-size ingots with good homogeneity by conventional processes

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