Roller casting method based on temperature control

Abstract

The invention relates to a roller casting method based on temperature control. The method is characterized by specifically comprising the following steps: S1, carrying out designing for a roller part drawing according to roller requirements; S2, carrying out calculation and designing of a riser according to the feeding volume; S3, simulating and analyzing the solidification process, and calculating the solidification time of a roller body, a roller neck and the position of the dead head; S4, sleeving the roller neck of the roller and the outer side of the riser with an induction heating device after casting is completed; S5, in the solidification stage, starting the induction heating device, heating the roller neck and molten metal in the riser continuously through induction coils, and prolonging the solidification time of the roller neck and the riser; and S6, cutting off power sources of the induction coils on the outer sides of the roller neck and the riser in sequence after the roller body is solidified to let the roller neck and the riser of the roller be solidified in sequence. According to the roller casting method based on temperature control, by adopting induction heating, it is guaranteed that the smooth solidification effect is achieved when metal of the roller body is solidified, the thick and large part of the roller body is fully fed, consumption of molten metal is reduced, and the follow-up machining workload is reduced.

Description

technical field [0001] The invention relates to the field of rolls and casting processing thereof, in particular to a method for energy-saving casting of roll castings with light weight and less surplus. Background technique [0002] The roll is an important part of the rolling mill in the rolling mill. It is a consumable product and is used in a large amount. According to different processing objects, the shape varies greatly. After the conventional casting roll is poured, the surface of the riser needs to be kept warm to ensure that the molten metal at the riser end solidifies sequentially and feeds shrinkage, thereby obtaining a dense internal structure of the roll. If the riser surface is not insulated, the entire riser end and the riser neck connected to it will have defects such as shrinkage cavities, shrinkage porosity and even pores, which will cause the entire roll to be scrapped. The roll neck size of the roll is generally smaller than the roll body, and the conve...

AI Technical Summary

Problems solved by technology

If the riser surface is not insulated, the entire riser end and the riser neck connected to it will have defects such as shrinkage cavities, shrinkage porosity and even pores, which will cause the entire roll to be scrapped

The roll neck size of the roll is generally smaller than the roll body, and the conventional heat preservation or heating riser method has limited effect, and it is difficult to adjust the process to the sequential solidification; during casting, for the purpose of feeding the roll body, prevent internal defects of the roll body , the roll neck needs to be artificially enlarged, otherwise the roll body has not yet solidified, the riser neck and riser will solidify first, and the roll body will have serious defects such as shrinkage cavities

The enlarged roll neck and riser need to be processed in the post-processing process, which not only causes a waste of metal material resources, but also causes a longer solidification time, increases the difficulty of the casting process, and increases the processing workload and additional costs.

Images