Disconnection device for punch refrigerant top

Abstract

The invention discloses a tube detaching device used in a perforator and being capable of cooling the piercing plug of a perforator, which relates to the device for cooling the piercing plug of a hot rolling perforator and tube detaching equipment. In prior art, a cooling water tank and a tube detaching device take up two positions respectively, after perforation, the length of a tubular billet is up to 10 meter with which a mandril and an outlet platform both with enough length are needed to be matched. The increased length of mandril not only results in the poor rigidity of the mandril, influences the quality of wall thickness of the tubular billet, but also results in lengthening of the outlet platform and enlarging the land occupation. In the invention, the cooling water tank and the tube detaching device are designed in integration; a water nozzle is positioned in the cooling water tank; the water nozzle is connected with flow pipe through a flange; an offlet is positioned at the bottom of the cooling water tank; therefore, one position can realize two functions that are tube detaching and piercing plug cooling, which not only reduces the length of the mandril, enhances the rigidity of the mandril, improves the uniformity of wall thickness of the tubular billet but also reduces the lengths of a first and a second segments of the outlet platform, thus ensuring the more compact structure of the device.

Description

technical field [0001] The invention belongs to hot-rolled piercing machine equipment, in particular to cooling and pipe-off equipment for a section of the hot-rolled piercing machine outlet platform in a seamless steel pipe production unit. Background technique [0002] Hot-rolled piercing is the most important process in the production of seamless steel pipes and the first process of metal deformation. The function of the hot-rolled piercing machine in the seamless steel pipe production line is to wear and roll the solid billet into a hollow capillary tube. The piercing process is that the rollers of the piercing machine rotate, and the ejector push trolley at the second section of the exit platform drives the plug and the ejector pin to the working position, and the ejector thrust trolley is locked at this position, and the heated tube blank is pushed by the entrance platform. The blank hydraulic cylinder pushes the tube blank into the main base of the piercing machine, ...

AI Technical Summary

Problems solved by technology

When the ejector rod becomes longer, not only its rigidity will become worse, but the plug will easily deviate from the rolling center line when piercing, resulting in uneven wall thickness of the capillary, and the first and second sections of the exit platform will be lengthened, occupying a large area

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