Combined smelting device capable of increasing yield of alloy castings and application of combined smelting device

Abstract

The invention relates to a combined smelting device capable of increasing the yield of alloy castings and application of the combined smelting device, and belongs to the technical field of vacuum induction melting and investment casting. A crucible used for primary smelting and an ingot mold used for primary smelting are matched to prepare mother alloy cast ingots in a vacuum induction furnace, the outer surface of each mother alloy cast ingot is polished, and riser parts are cut off; and afterwards, a crucible used for secondary smelting and a refined casting mold shell used for secondary smelting are used for investment casting in the vacuum induction furnace, and thus, a precision casting is obtained. According to the combined smelting device capable of increasing the yield of the alloycastings and the application of the combined smelting device, a distribution disc is adopted for a sprue for primary smelting so that multiple mother alloy ingots can be cast at a time, ingot molds with different sizes can be used and the number of the ingot molds can be selected according to the quantity of molten materials, and the size of the ingot molds is matched with that of the crucible for secondary smelting and the material quantity. On the one hand, material waste is reduced, and the yield of materials is increased; and on the other hand, axial enlarged areas are designed at the twoends connected with the precision casting, so that sufficient feeding of the precision casting is achieved at the later casting solidification stage, and casting defects such as shrinkage cavities and shrinkage porosities are reduced.

Description

technical field [0001] The invention relates to an ingot mold for improving the yield of high-silicon-nickel-copper alloy castings, a precision casting mold shell and an application thereof, belonging to the technical field of vacuum induction melting and investment casting. Background technique [0002] Vacuum induction melting is closely related to investment casting technology. For castings with high purity requirements, two or more meltings are required to improve their cleanliness. For multiple smelting, it involves the ingredients before the second or multiple smelting. If the size of the master alloy ingot prepared in the previous time is not conducive to the next smelting, it is necessary to cut the master alloy ingot. Cutting will cause serious waste of materials, especially in industrial production, cutting uses grinding wheels, which will cause a lot of waste of materials. [0003] Now many castings can be prepared by precision casting, and the prepared cast prod...

AI Technical Summary

Problems solved by technology

However, during the preparation of precision castings, defects in as-cast structures and low yields are often encountered.

Especially during the solidification process, alloys with a large shrinkage rate are prone to shrinkage of the solidified structure caused by insufficient feeding during the solidification process, and the main consideration for solving this problem is to increase investment casting The amount of material used in the process, try to make the material fully fed during the solidification process, which further increases the waste of material

Images