JPS62158524A - Working method for shell structure member - Google Patents

Abstract

PURPOSE:To perform the labor saving of the work of a shell structure member by holding the temp. constantly by limiting the heating range, by press-forming the heating part with a press by laterally moving the necessary part of a steel stock by heating it in the optimum temp. by a high frequency induction heating device. CONSTITUTION:The coil of a high frequency induction heating device is placed on a steel plate 4 at the place spart by the fixed distance (l) from the metal dies 8, 9 of a press 3 for forming an extruding aggregate. The necessary part 6 of the steel plate 4 is heated to the given temp. by electrifying the coil. Then, an extruding aggregate is formed by pressing with a press 3 by placing the heating part 6 of the steel plate 4 just under the metal die 8 of the press 3 by laterally moving the steel plate 4 by the distance (l) on a feeding roller 5.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field) The present invention relates to a method for processing inner tank members such as floors, girders, and transformer materials of structural members of ships or offshore structures.

(Prior art and its problems) Conventionally, as shown in FIG. It took a lot of time and effort to increase the number of parts through the various processes of arranging materials, mounting, welding, warping, and inspecting them.Additionally, a silver plate was required as a protection material.

In addition, conventional heating bending processing generally involves heating with a gas flame, but it is difficult to adjust the heating temperature. That is, the heating temperature is adjusted using a gas drift, but since it is affected by the outside temperature, it is adjusted manually, and the heating condition is also visually checked, so the heating temperature varies from one lawn to the next.

(Purpose of Blue History) The purpose of the present invention is to solve the problems of the prior art listed in 1.
) K provides a machining method that saves labor in machining structural members.

(Structure of the Invention) That is, according to the present invention, after that, a required portion of the steel plate is heated to the optimum temperature by 7.0 degrees using a 1δ1 group rJ5 conduction heating device, and then the M plate is heated by 1g horizontally to form a paddy steel plate. Processing of parts that require pressure and molding of the heating part with a press,
is questioned.

Next, the present invention will be explained with reference to the drawings.

Figure 1 (al is a perspective view of the extruded shape, same <tb+ is f
al's A-AiFM surface diagram, 1 <[clkXfal
2 is a cross-sectional view taken along I3-r3 of FIG.

In order to produce the extruded aggregate 1 shown in Fig. 1 (at),
Processing is performed using a high-frequency induction heating device 2 and a brace 3 shown in Fig. 2. The coil of the high frequency induction heating device 2 is placed on the steel plate 4 at a certain distance away from the mold 3a of the press 3,
The optimum r that determined the required portion 6 of the steel plate 40 by energizing K! Heat to FA degree.

Next, the heated steel plate 4 is slid on the feed roller 5 and moved laterally by a distance of 2, the heated part 6 of the steel plate 4 is placed directly under the mold 3a of the brace 3, and is extruded by pressing with the press 3. Produce aggregate 1. Note that the shape and arrangement of the extruded aggregate 1 are not limited.

(Effects of the Invention) By adopting the above configuration, the present invention brings about the following effects.

(1) Conventional processes such as marking, cutting, sorting, distribution, mounting, welding, strain relief, and inspection of anti-crushing materials can be omitted, making it possible to save labor in processing.

(21) The method of the present invention is a thermoforming method that combines a high-frequency induction heating method and a pressure method using a breather, and has the following advantages.

lal Can be processed in a short time. That is, since the heating N and range can be limited, the temperature can be kept constant.

The regulations for ibl processing are easy. That is,
Since it can be used electrically, it is possible to make it self-contained.

fcl　It is not a separate steel plate for the stiffener.

[Brief explanation of drawings]

Figure 1 (at is a perspective view of the shape of extruded aggregate as a defense material of the present invention, same < (b) is a sectional view taken along A-A of fal, same < (c) is a B-B cross section of (al) 2 is a front view of the heating press device used in the present invention, and FIG. 3 is a perspective view of an example of the shape of a conventional stiffener. In the figures, 1-111 extruded aggregate 2 -1--High-frequency conductive heating device 3-11-Press 3a----Press mold 4-111 Steel plate 5-111 Feed roller 6---Heating section 7--- - Cylinder 8 - 111 female type 9 - 111 male type 101 --- One stiffener 102 - Single shaft transformer material

Claims (1)

[Claims] (1) A grain structural member characterized by heating a required portion of a steel plate to an optimum temperature using a high-frequency induction heating device, then moving the steel plate laterally, and pressurizing and forming the heated portion of the steel plate with a press. processing method.