JPS5855184A - Explosion press-welding method to base material having groove part - Google Patents

Abstract

PURPOSE:To manufacture a sound explosion press-welded cladding having a hollow part, by putting a filler into a groove part of a base material, placing a cover whose material quality is same as or similar to a clad material, on said filler, and after that, press-welding the clad material by explosion. CONSTITUTION:In a groove part 4 of a base material 1, a filler 3 is placed, on which a cover 8 whose material quality is same as or similar to a clad material for preventing the filler from jumping out is placed. On this base material 1, a clad material 2 is placed with a gap 5, and on its clad material 2, an explosive 6 is loaded. This explosive 6 is initiated by a detonator, and the clad material 2 is press-welded to the base material 1 by explosion. After press-welding, the clad material 2 and the cover 8 are entirely unified by removing the filler 3, and a sound cladding having a hollow part 7 is obtained. In this case, as for the filler 3, a low melting point metal, paraffin, asphalt, etc. can be used.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an explosive crimping method for manufacturing a metal solid having a hollow portion, such as a cooling device or an air brake.

Conventionally, as a manufacturing method of this type, a method is known in which a composite material is explosively bonded to a base material having grooves (British Patent No. 11).
28144)) In this case, a method is used in which a low melting point metal is placed in the groove of the base material, but due to the conditions of explosive crimping, the filling material may fly out during explosive crimping, causing the groove to become damaged. If the periphery becomes non-pressure bonded, the filler may become trapped at the bonding interface between the composite material and the base material, resulting in a decrease in bonding strength.

Specifically, it is as shown in FIG. That is, in FIG. 1, 1 is a base material, 2 is a composite material, and 8 is a filler placed in a groove 4 of the base material. A gap 6 is created above the base material 1 in the state of
When the explosive 6 is placed on the composite material 2 and detonated by a detonator, the base material 1 and the composite material 2 are crimped together. By removing the filler 8 from the groove 4, an explosive crimp clad steel having a hollow portion 7 as shown in FIG. 2 is manufactured. However, in this case, the filler 8 placed in the groove 4 of the base material 1 may fly out due to the energy of the explosive crimping, resulting in incomplete crimping at the corners a and b shown in FIG.

The present invention solves these conventional problems and relates to an improved method for preventing the filler from flying out of the groove during explosive crimping.

That is, in the present invention, when explosively crimping a composite material to a base material having a groove, (1) a filler is placed in the groove of the base material, and a lid made of the same or similar material as the composite material is placed on top of the filler; (2) Fitting a pipe with the same shape as the groove filled with a filler into the groove of the base material, and explosively crimping the composite material over it. This is an explosive crimping method for base metals with different grooves.

To explain this using drawings, in Fig. 8 (1
Parts with the same names as those in the figures are indicated with the same symbols. )
, filler 8 is placed in groove 4 of base material 1, and filler 8 is placed on top of the filler 8.
A lid 8 made of the same or similar material as the composite material is placed to prevent the mixture from flying out, and the composite material 2 is placed on top of the base material 1 with a gap 5, and the explosive 6 is placed on top of the composite material 2. The composite material 2 is explosively crimped onto the base material 1 by detonating it with a detonator.

By removing the filler 8 after crimping, a sound explosive crimped cladding having a hollow portion 7 in which the composite material 2 and the lid 8 are completely integrated as shown in FIG. 4 is manufactured.

FIG. 5 shows another embodiment in which a square tube 9 made of the same or similar material as the composite material 2 and having the same shape as the hollow part with a filler 8 inside is fitted into the groove 4 of the base material 1. Explosive crimping is performed in the same manner as in the case shown in Fig. 8, and by removing the filler 8 after crimping, the square tube 9 and the composite material 2 are integrated into a single piece, as shown in Fig. Explosive crimp cladding is produced.

The purpose of the lid 8 shown in FIG. 8 and the square tube 9 shown in FIG. 5 is to prevent the filler 8 from flying out during explosive crimping. It is made of a material that has a cooling effect, such as copper. In such cases, if the lid 8 or the square tube 9 does not join with the composite material 2, or if the lid 8 or the square tube 9 is made of a different material from the composite material 2, and the thermal conductivity is poor, the cooling effect may be affected. In addition, it is advantageous to use the same or similar material as the composite material for the lid 8 and the square tube 9, both from the physical properties of the cladding and from the viewpoint of ease of explosive crimping.

For these reasons, in the present invention, the lid and the square tube are made of the same material as the composite material or a similar material, and the composite material, the lid, and the square tube are completely crimped and made into one body. 0 Fillers include low melting point metals and paraffin.

In addition to thermoplastic materials such as asphalt, it can be used to seal ice, salts, fluids, and gel-like materials.

Next, a specific example will be described.Example 1 In FIG. 8, the base material 1 is an aluminum plate with a thickness of 80 mm.
m, width is 500 mm, length is 1,000 m, depth is 10 m, e width is 20 m, length is 800 m.
+ grooves 4 were machined at intervals of 20 m, and steps 21111 were added to the top of the grooves 4. The groove 4 is filled with a filling 8.
Paraffin was added as a filler, and an aluminum lid 8 with a thickness of 2 wm was placed on top of the paraffin so that it ran across the tiers so that there were no gaps. Next, with a gap 5, a composite material 2 made of aluminum with a thickness of 10mm and slightly larger than the base material 1 is installed, and on top of it a composite material 2 with an explosive speed of 2,000rn//Be
When the explosive 6 of c was loaded and detonated with a detonator, the explosion was crimped and the filler was removed, as shown in Figure 4, the mixture 2 and the lid 8 became one, leaving a hollow space with no trace of the filler flying out. An aluminum cladding having section 7 was obtained.

Example 2 In Fig. 5, the base material 1 is a mild steel plate with a thickness of 40 mm, a width of 500 mm, and a length of 1,000 mm, and a groove portion with a depth of 10 mm, a width of 2011 IIB, and a length of 800 + a+. 4 at intervals of 20 pieces, and fill the grooves 4 with filling 3.
A square tube 9 with a thickness of 2 sieves, a height of 10 gourds, a width of 200 meters, and a length of 800 m + is inserted into the tube, and then a square tube 9 with a gap of 5 is made and a copper plate with a thickness of 15 fi is inserted. A composite material 2 of a slightly larger size than the base material 1 was placed, and an explosive 6 with a detonation velocity of 2,000 tn/BeC0 was placed on top of it, detonated with a detonator, and the explosive was crimped and the filler was removed, as shown in Figure 6. As shown in the figure, the composite material 2 and the square tube 9 were integrated to form a clad steel of copper and mild steel having a hollow portion 7.

The method of the present invention relating to explosive crimping to a base metal having grooves has been described above, but in addition to this, for example, as shown in FIG. It can also be applied to obtain hollow clad metal by explosive crimping. Further, as shown in FIGS. 8 and 9, a hollow clad metal is obtained by explosively bonding the composite material 2 to the surface of a hollow member 11 made of extruded hollow aluminum or hollow metal obtained by a casting method. It is also applicable to

[Brief explanation of the drawing]

1 and 2 are explanatory diagrams of the conventional method, FIGS. 8 to 6 are detailed explanatory diagrams of the present invention, and FIGS. 7 to 9 are explanatory diagrams of applied examples. 1... Base material 2... Composite material 8... Filler 4... Groove portion 5... Gap 6... Explosive 7... Hollow part 8... Lid 9...・Square tube 10...Hollow square metal tube 11...Space component patent applicant Asahi Kasei Industries Co., Ltd. agent Patent attorney Hide Komatsu Figure 1 Figure 2 Figure 3 Figure 5 Figure 7 Figure 8 Figure 9

Claims (1)

[Scope of Claims] 1. A method for explosively crimping a composite material onto a base material having a groove, by placing a filler in the groove of the base material and placing a lid made of the same or similar material as the composite material. A method of explosive crimping onto a base material having grooves, which is characterized by explosive crimping a composite material from a base material. 2. When explosively crimping a composite material to a base material having a groove, a tube with the same shape as the groove filled with a filler is fitted into the groove of the base material, and the composite material is exploded from above. Explosive crimping method for base material having grooves characterized by crimping.