JPS6033497A - Panel with header - Google Patents

Abstract

PURPOSE:To facilitate the manufacture of the panel by a method wherein a steel plate is worked to manufacture half-split headers, stubs are drawn out, tubes are abutted against the stubs to weld them, thereafter, the other half-split headers are drawn out to weld it to the half-cut headers having the stubs. CONSTITUTION:After a preliminary hole for the drawing of the stub 7 is worked on the steel plate 1, the steel plate 1 is bent to a predetermined shape and the stub 7 is drawn out by burring work, then, the expanding work of the upper surface is effected. On the other hand, the half-cut header 2 is manufactured by bending the steel plate into a predetermined shape. Next, both ends of tubes 3 are bevel-worked while the bevel ends are abutted against the bevelled ends of the drawn stub 7 of the half-split header 1 to weld them from the inside of the header 1 by an automatic circumference welding machine TIG or hand welding. The header 1 is abutted against half-split header 2 to weld them in the lengthwise direction thereof by an automatic welding machine or hand welding, thereafter, end plates 4 are incorporated thereinto to weld and complete the panel.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a panel with a header, and the present invention relates to a panel with a header, and the present invention relates to a panel with a header and a half plate having a drawing-out tap, which is suitable for eliminating the saddle shape of the header and tube, improving the quality of the welded part, and applying automatic welding. This invention relates to a panel with a header using a split header.

In conventional panels having a welded structure composed of a header and a tube, a commercially available steel pipe or the like is used as the header. A hole for welding the tubes that make up the panel is made in this steel pipe, a saddle-shaped groove is made around the hole and in the tube, and the first layer is T I G welded by aligning them to form a butt joint. , Seal welding is performed using the MAG welding method for the second and subsequent layers to produce a panel with a header. In this method of manufacturing panels with headers, it is extremely difficult to process the saddle-shaped beveling of the header and the groove, and at the same time, the machining time is long (necessarily, discrepancies often occur when aligning the bevels for the grooves, so it is necessary to perform the actual alignment process each time. In addition, since the saddle-shaped shape is a three-dimensional curve, it is difficult to apply automatic welding machines, and the above-mentioned groove joints are manually welded. Since there are problems such as the conditions being unstable and depending on the operator, there are also drawbacks in terms of product quality, such as the tendency to cause welding defects such as insufficient penetration during welding.

The purpose of the present invention is to eliminate the above-mentioned drawbacks of conventional panels, to enable work under stable welding conditions by using a simple butt groove without changing the panel function during production, and to apply automatic welding. The purpose of the present invention is to provide a panel with a header that allows for.

According to the present invention, the above object is to process a steel plate to produce a half header, squeeze out a stud from the half header, weld a tube against the stud, and then attach it to the other half header. This is achieved by a panel with a header welded to a half header having the above-mentioned squeezing taps.

An embodiment of the present invention will be described below based on the drawings. 1st
The figure and FIG. 2 are a front view and a side view showing a completed panel with a header. The header-equipped panel includes half headers 1 and 2, and the half header 1 is provided with a squeezing tap 7, and further includes a tube 3 welded against the stud 7 and an end plate attached to the header. Be prepared.

The manufacturing sequence of the panel with the header will be described in detail with reference to FIGS. 3 to 8. A steel plate 1 which becomes a half-split header having a drawing-out tap has a pilot hole I for drawing out the tap 7.
After processing A, it is bent into a predetermined shape (FIG. 4), and the stud 7 is squeezed out by burring (FIG. 5), and its upper surface is beveled. Separately, a half header 2 is similarly produced by bending a steel plate (not shown) into a predetermined shape. Next, both ends of the tube 30 are beveled t7,
The half-split header 1 having the squeezing tap 7 and the tube 3 are butted together and the grooves are aligned to form the welded part f shown in FIG.
Automatic circumference TIG from the inner surface of the header 1 at it 5
Weld with a welding machine or by hand (Figure 6). The above-mentioned half-split header 2 is fitted to this header 1, and the longitudinal directions thereof are welded 6 using an automatic welding machine or by manual welding, and the end plate 4 is further assembled and welded to complete the panel. In addition, Fig. 7A shows the welding part where the stud 7 and the tube 3 are welded in half from the inner surface of the ladder 1, Fig. 7B shows the butt of the welded part without a groove, and Fig. 7C shows the welding part on the welding side. 05
Shows a butt with increased surface area of C.

The present invention focuses on the fact that panels with headers manufactured from steel pipes are subjected to saddle-shaped bevels and welding, and as a means to eliminate this saddle-shaped header, the headers are manufactured from copper plates, and the headers are manufactured using known drilling, bending, and welding techniques. The work efficiency is improved by using burring technology and various automatic welding machines, and a half-split header with a squeeze-out tap on the panel is used to obtain a high-quality welded joint.

Furthermore, according to one embodiment of the present invention, the plate thickness of the header is 6t.
, header outer diameter 76.2φ, squeezing tap outer diameter 38.
1φ, number of tap drawings 10, and tube size 3
In the production of 8.1φ panels, simple butt welding and automatic welding machines are used, reducing the amount of fitting work during production and improving work efficiency, reducing panel production time by approximately 20%. was completed. Furthermore, by applying automatic welding machines, we were able to establish welding conditions, obtain stable bead appearance and penetration, and improve quality.

According to the embodiment described above, a half header is manufactured by processing a steel plate, a stud is squeezed out from the half header, a tube is butted against the stud and welded, and then the other half header is attached to the squeezed stud. By welding it to a half-split header with 300 mm, it is possible to eliminate the conventional saddle-shaped bevel processing and saddle-shaped welding, and to perform simple butt welding, and an automatic welding machine can be applied to this welding, making it possible to reduce alignment during production. This has the effect of reducing panel production time by reducing work and improving work efficiency.

As shown above, according to the present invention, there is no need to change the function of the panel during manufacturing (by using a simple butt groove, work can be performed under stable welding conditions, automatic welding can be applied, etc.) It is possible to provide a panel with a header that has the following effects.

[Brief explanation of drawings]

Fig. 1 is a front view showing a panel with a header completed according to the present invention, Fig. 2 is a side view thereof, Figs. 3 to 8 show the procedure for manufacturing the panel with a header, and Fig. 3 4 is a cross-sectional view of a steel plate that becomes a half-split header with a drawing tap, and FIG. 4 is a cross-sectional view of the steel plate shown in FIG. 3 after being bent.
Figure 5 is a cross-sectional view of the tap drawn from Figure 4, Figure 6
The figure is a sectional view showing butt welding of a tube and a half header having a drawing tap, FIG. 7A is a sectional view showing the welded part, FIGS. 7B and 7C are sectional views showing the shape of the butt part, FIG. 8 is a sectional view showing further welding of the half header to the state shown in FIG. 6. 1... Squeezing tap half header, 2...
...Half header, 3...Tube, 7.
... Squeezing tap. 1st v! J 2nd W! J501

Claims (1)

[Claims] Process a steel plate to produce a half header, squeeze out a tap from the half header, butt the core stud with a chive and weld it, and after j, attach the other half header to the half header with the above squeezed tap. A panel with a header that is made by welding.