A method for processing a hyperbolic plate and a pyrotechnic tool used in the method

Abstract

The invention provides a method for processing a hyperbolic plate, which comprises the following steps: drawing a transverse heating line according to the process of the hyperbolic plate; fixing the hyperbolic plate on a pyrotechnic tool, heating along the transverse heating line, and Apply pressure to the hyperbolic plate through the ejector pin of the pyrotechnic tool; heat along the transverse heating line until the forming effect of the hyperbolic plate decreases significantly, stop heating along the transverse heating line; increase the diagonal heating line according to the forming effect of the hyperbolic plate ;Heat along the diagonal heating line, and at the same time apply pressure to the double curvature plate through the ejector pin, and stop heating after processing to the target forming effect. The invention also provides the pyrotechnic tool used in the method, including a base and a door frame, the door frame is arranged on the base, a drive unit is slidably arranged on the door frame, the drive unit is installed with a push rod, and the drive unit is electrically connected to an electric control system. The above-mentioned tooling is easy to operate and has a good fastening effect on the double curvature plate; and the processing method has a good processing effect and high processing efficiency.

Description

technical field [0001] The invention relates to the technical field of ships, in particular to a method for processing a hyperbolic plate and a pyrotechnic tool used in the method. Background technique [0002] Water and fire bending refers to heating the plate in a local linear shape with oxygen-acetylene or laser heat source along the predetermined heating line, and tracking cooling with water (or allowing it to cool naturally), so that the plate produces local plastic deformation, so that the plate is bent into the desired shape. A method of bending a plate to a desired surface shape. Water and fire bending is currently the main process method for most shipbuilding, steel structure and other heavy industry enterprises to bend complex curvature plates and large internal components of the hull. [0003] At present, when the water and fire bending plate is heated, the plate is processed on the traditional portal frame. It is necessary to temporarily install a jack on the be...

AI Technical Summary

Problems solved by technology

[0003] At present, when the water and fire bending plate is heated, the plate is processed on the traditional portal frame. It is necessary to temporarily install a jack on the beam of the portal frame to facilitate the fastening of the plate after processing and deformation. The traditional portal frame needs to manually adjust the jack. For thick and large double-curvature plates, the pressure of the traditional portal frame is small, and the processing capacity is limited. At the same time, the process is more cumbersome, the construction process is time-consuming and labor-intensive, and the benefit is low

In addition, the traditional water and fire bending process is to linearly heat the plate along a row of parallel transverse heating lines, so that the steel plate produces the required bending deformation during the expansion and compression process. The processing effect is better, but for the two-way curvature steel plate, due to its large curvature and two bending directions, after the thermal deformation of the water-fired bending plate reaches a certain level, continue to heat along the direction of its transverse heating line, and the thermal deformation effect will be reduced. Gradually decreasing, the processing effect is not good and the processing efficiency is low. At the same time, repeated heating of the same area will lead to serious carbonization of the surface of the plate, affecting its appearance and structural strength

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