Hoisting overturning method for ring brick of RH vacuum impregnation pipe

Abstract

The invention relates to a hoisting overturning method for a ring brick of an RH vacuum impregnation pipe. The hoisting overturning method comprises the following steps: (1) manufacturing a ring brick hoisting device; (2) processing one side surface of the ring brick on a grinder, then hoisting the whole ring brick hoisting device by a crane, and sleeving the ring brick externally with a fallen hanger; (3) locking each group of locking devices, and fixedly connecting the ring brick and the hanger to form a whole body; (4) starting the crane, hoisting the ring brick and the ring brick hoisting device to an open place, and turning over by 180 degrees integrally; and (5) hoisting again, putting the ring brick hoisted horizontally on the grinder, moving the ring brick hoisting device away, grinding the other side surface of the ring brick, repeating the steps from (2) to (4), and hoisting the processed ring brick to a storage place. According to the invention, the specific ring brick hoisting device is adopted, circumferential six points are locked uniformly, and the locking is firm and reliable; the hanger is used for overturning, and thus the work efficiency and the safety during hoisting and overturning of the ring brick are improved greatly; the hoisting overturning method is suitable for ring bricks of various specifications, and is economic and convenient.

Description

technical field [0001] The invention relates to the technical field of hoisting, in particular to a hoisting and turning method for RH vacuum impregnated pipe ring bricks. Background technique [0002] In recent decades, RH refining technology has made great progress, from the original single degassing function to the current vacuum degassing, decarburization, oxygen blowing decarburization, powder spraying desulfurization, temperature compensation, removal of inclusions, uniform temperature It has become the most commonly used secondary refining metallurgical method for smelting high-quality steel. [0003] In RH vacuum refining equipment, RH impregnated pipe is one of the most important refractory materials, such as figure 1 As shown, the RH dipping tube is sequentially composed of magnesia-chromium (chromium-free) ring brick 1, self-flowing material 4, steel structure 2 and outer layer castable material 3 from the inside to the outside, and the ring brick 1 is also provi...

AI Technical Summary

Problems solved by technology

[0005] After the upper surface of the ring brick is processed on the grinding machine, it is necessary to turn the ring brick as a whole before processing the lower surface. However, due to the large size and weight of the ring brick (due to different specifications, the general weight of each group of ring bricks is between 0.5 and 2.2 tons) ), the method of directly hoisting the ring bricks is generally adopted in the process of turning the ring bricks, but the wire rope is easy to slide, and it is difficult to maintain the balance of the ring bricks during the lifting and turning process, and the stability and safety of the hoisting and turning ring bricks are poor. , if you are not careful, the ring brick will be damaged, and there is also a hidden danger of personal accidental injury

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