JPS62263835A - Manufacture of heavy expanding metal - Google Patents

Abstract

PURPOSE:To reduce the production cost by executing a hot rolling by coating a release agent on the plural through holes formed on a metal made thick plate and expanding the crashed through hole. CONSTITUTION:Plural through holes 2 are formed in the width direction of a metal made thick plate 1 and a release agent is coated on the inner face. After heating the thick plate 1 upto about 1,200 deg.C, a hot rolling is executed so as to crush an oblong hole 2 with a rolling roller to remove the trimming part 1a of both ends by cutting. The thick plate 1 is then cut in plural sheets by selecting the cutting thickness (t) according to the thickness of the expanding metal of the final product. A hole making cutting tool is pushed into the slit 4 of the thick plate 1n of after cutting to subject each slit 4 to an opening in hexagonal shape. In this way the working of the aperture part can integrally be performed and the work process and amount can be reduced. Consequently the production cost can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] 111 relates to a method for manufacturing a kiss band metal. Unexploded is also a method that can also produce frameless gratings or honeycomb structures.

[Conventional technology] Conventionally, the method for manufacturing expanded metal is to form a large number of cuts (slits) in a steel plate in a staggered manner, and after forming the cuts, the steel plate is expanded by pulling it from its surroundings. The lever cuts were expanded to form a tortoiseshell-shaped mesh.

[Problems to be solved by the invention] However, according to this method, the thickness of the steel plate needs to be approximately 8 mm or less in order to form the slits, and it has been impossible to manufacture a steel plate thicker than this. .

Therefore, expanded metal manufactured using conventional technology has a limited scope of use, and is extremely costly compared to wire mesh manufactured from wire, especially for applications such as fences and lightweight floor netting. Therefore, demand was low.

Therefore, the present invention makes it possible to arbitrarily select the plate thickness when manufacturing baby expanded band metal, and also allows hole processing to be performed at once when manufacturing multiple baby expanded band metals. was created with the aim of providing a method for manufacturing heavy expanded metal that made it possible to reduce the amount of processing and processing steps.

[Means for solving problems] The present invention consists of the following two inventions.

The first invention includes a step of forming a plurality of through holes in the width direction of a thick metal plate, a step of applying a release agent to the inner surface of the through holes, and a step of forming a plurality of through holes in the width direction of the metal thick plate, and removing the metal plate through the above steps in the thickness direction. The present invention relates to a method for producing heavy expanded metal, which comprises a step of crushing the through hole by hot rolling, and a step of expanding and opening the crushed through hole.

The second invention is a laminate made by alternately stacking metal plates with zones coated with an adhesive on both sides and zones coated with a release agent alternately in the longitudinal direction and a metal plate with a raw material. The process of
The present invention relates to a method for manufacturing heavy expanded metal, which comprises a step of expanding a release agent coated zone in the laminate.

Both inventions share the final step of expanding and opening holes to produce heavy expanded bands and metals, but while the first invention expands crushed through holes, the second invention The difference is that it is not necessary to form through holes in the metal thick plates at the initial stage, and the non-adhered portions of the metal plates are pushed apart.

[Effect] Each step of the first invention plays the following role.

The process of forming multiple through holes in the width direction of a metal thick plate is
This is a primitive method for drilling holes in heavy expanded metal. In this case, if the through-holes are provided in a staggered manner, the alignment during the subsequent bid opening process will be better.

The step of applying a release agent to the inner surface of the through-hole is a step after expanding the crushed through-hole to open the hole, and the inner surface of the hole is not welded due to the crushing, and the release agent is easily peeled off and the opening is closed. This is to make it possible to do so smoothly.

The step of crushing the through hole by hot rolling the metal thick plate in the thickness direction removes the processing strain caused by the formation of the through hole, and also expands and opens the crushed through hole. This prevents cracks from forming on the inner surface of the hole in the process after drilling, and also allows the crushed corners of the hole to widen at a sharp angle.

In addition, since the release agent applied in the previous step may peel off due to heating at this stage, it is desirable to mix water glass in the step of applying the release agent.

The process of expanding and opening the crushed through hole forms a hole in the heavy expanded metal as the final product. In addition, if the through holes are installed in a staggered manner as described above, when opening a through hole that is crushed by -, the adjacent through holes will also open smoothly.
Inserting the drilling tool becomes very easy.

Each step of the second invention plays the following role.

The process of making a laminated board by alternately laminating metal plates with adhesive-coated zones and release agent-coated zones on both sides in the longitudinal direction and raw metal plates is a heavy-expanding process. This is a primitive form of connection between the holes in the metal and the mesh, and the release agent applied zone easily peels off and becomes holes, which has the same meaning as the crushed through holes in the first invention. , while the adhesive application zone becomes the bonding part of the mesh.

The step of expanding the release agent coated zone in the m-layer plate forms holes in the heavy expanded metal as the final product, similar to the final step of the first invention described above.

In addition, in the case of the first invention, if the release agent application zones are arranged in a staggered manner in each layer in the 't11 layer plate, the work in the hole-opening process is simplified, as in the case of the first invention.

In this second invention, each of the m-layered metal plates is not subjected to processing that would cause distortion until the final process, so no cracks or the like occur on the inner surface of the expanded hole. Furthermore, since the corners of the mesh form the boundaries with the adhesive application zone, they always form sharp angles.

[Example] Embodiments of the present invention will be described below with reference to the drawings.

Example of the first invention The first embodiment of this invention consists of the following four steps.

In the first step, as shown in FIG. 1, a plurality of through holes 2 are first formed in the width direction of the thick metal plate 1. In the actual implementation, the cross section was 50 mm x
6mm x 30m on a 50mm thick metal plate
It was decided that the long holes of m length would be penetrated in a staggered manner.

The second step is a step of applying a release agent to the inner surface of the through hole 2 formed in the previous step.

In the third step, the metal plate 1 coated with a release agent is
As shown in FIG. This becomes a slit 4 extending in the longitudinal direction of the thick plate 1. In the actual implementation, hot rolling resulted in a metal plate with a thickness of 15 mm and a width of 80 mm (rolling ratio of 1/3).
, - the length of the slits 4 was 47 mm.

By the way, in this hot rolling, the elongation of the central part in the thickness direction of the metal thick plate 1 is large, and on the contrary, it is less on the rolled surface, so the shape of the internal slit 4 is formed on the rolled surface of the metal thick plate 1. appears, but the portion where the planar shape of the slit 4 appears is removed.

Further, after hot rolling, there is one trim la (as seen from the arrow A-A in FIG. 2) at both ends of the thick metal plate 1, which is also cut.

The metal thick plate 1 formed in this manner is cut into a plurality of pieces along the plane shown by the dashed line in FIG. 2, if necessary. That is, the cutting thickness (1) is selected depending on the thickness of the heavy expanded metal that is the final product.

Therefore, by increasing the cutting thickness, it is possible to manufacture frameless gratings and honeycomb structural materials.

Each cut metal plate In has slits 4 appearing in a staggered layer on its cut surface, and in the fourth step, each slit 4 is cut using a perforating knife as shown in FIG. By pushing and inserting the tip 5a of the slit 5, each slit 4 is opened into a tortoise-shell-shaped hole. hole knife 5
This is because the cross section thereof gradually becomes hexagonal from the tip 5a.

As a result, each thick metal plate 1n is formed of heavy expanded e-metal as shown in FIG.

The second embodiment of the present invention undergoes the same manufacturing process as the first embodiment, but in the first process, as shown in FIG. The difference is that the through-holes 7 are formed in a single row at an angle, and when a release agent is applied to the inner surface of the through-holes 7 and hot rolled, the through-holes 7 become more An inclined slit 8 is formed, and when this hole is then punched with a punching knife (having a gradually rectangular cross section from the tip), the shape as shown in FIG. 7 is obtained.

A structure 9 that can be used as a modification of H-shaped steel can be manufactured.

The third embodiment is similar to the second embodiment,
As shown in Fig. t58, a plurality of through holes 11 are formed in double rows by slanting them in the width direction of a thick metal plate lO, and a release agent is applied to the inner surface of the through holes 11, and this is hot rolled. Then.

As shown in FIG. 9, the through hole 11 becomes a more inclined slit 12, and when this is then opened with a punching knife (one whose cross section gradually becomes rectangular from the tip), as shown in FIG. It becomes a shape! A frame-like structure 13 without one eye can be manufactured.

In the second and third embodiments, as explained in the first embodiment, the trim is cut after hot rolling, and also cut into a predetermined thickness in the longitudinal direction, and a plurality of metal sheets with a thickness The plates may be obtained and slits may be punched in each metal plate.

Embodiment of the second invention> The process of this invention is divided into a process of manufacturing a laminate and a process of opening holes.

As shown in FIG. 11, the laminated board is made of metal plates 16 in which zones 14 coated with adhesive and zones 15 coated with release agent are alternately provided in the longitudinal direction on both sides, and metal plates 17 made of raw material. Manufactured by layering. Note that it is desirable that the release agent application zones 15 of the metal plate 16 in the y1 layer plate be arranged in a staggered manner in the longitudinal direction.

In the hole-opening step, as in the fourth step in the embodiment of the first invention, the tip of the hole-opening blade is pushed into and inserted into the slit portion of the release agent application zone 15 on the laminated surface 18, thereby applying each release agent. Zone 15 is drilled.

In this way, when the holes are drilled, a heavy expanded Φ metal as shown in FIG. 4 can finally be obtained.

Furthermore, if the laminate is cut into a predetermined thickness in the longitudinal direction and divided into a plurality of VI laminates, and holes are drilled in the laminate, the thickness corresponding to thickness (1) in Fig. 4 can be freely selected. This is possible in the same way as in each of the embodiments described above.

[Effects of the Invention] As described above, the present invention makes it possible to arbitrarily select the plate thickness when manufacturing baby-extended metal, and furthermore, allows the thickness of the holes to be adjusted when manufacturing a plurality of baby-extended metal. Processing can be done all at once, making it possible to reduce the amount of processing and processing steps. As a result, Baby Exband Metal, which was limited in its use due to manufacturing restrictions on the thickness of the material and higher cost compared to conventional wire nets, has now been made available for that purpose. It is possible to manufacture the product at a low cost according to the standards that meet the requirements, thereby dramatically expanding the scope of its use.

Furthermore, in the present invention, the width of the metal thick plate used as the material is selected to be large,
Alternatively, by increasing the cutting interval during cutting after hot rolling, it is also possible to manufacture frameless gratings or honeycomb structural materials.

[Brief explanation of drawings]

Figure 1 is a perspective view of a metal plate with through holes formed;
Figure 2 is a perspective view of a metal plate after hot rolling, Figure 3 is a perspective view of a perforated cutter, Figure 4 is a perspective view of manufactured baby expanded metal, and Figure 5 is a perspective view of a through hole. FIG. 6 is a perspective view of a metal thick plate after hot rolling, FIG. 7 is a perspective view of a structure that can be used as a modification of H-shaped steel, FIG. 8 is a perspective view of a thick metal plate having double rows of through holes. FIG. 9 is a perspective view of a thick metal plate after hot rolling, FIG. 10 is a perspective view of a seamless frame-like structure, and FIG. 11 is a diagram showing the manufacturing process of an 11-layer plate.

Claims (6)

[Claims] (1) A process of forming a plurality of through holes in the width direction of a thick metal plate, a process of applying a release agent to the inner surface of the through holes, and a process of hot rolling the metal plate that has undergone the above steps in the thickness direction. A method for manufacturing heavy expanded metal comprising the steps of crushing the through hole by rolling, and expanding the crushed through hole to open it. (2) A method for manufacturing heavy expanded metal according to claim (1), wherein the through holes are arranged in a staggered manner in the width direction of the thick metal plate. (3) The metal thick plate that has gone through the process of hot rolling the metal thick plate in the thickness direction and crushing the through holes is cut into a predetermined thickness in the longitudinal direction, and each cut metal thickness is The method for producing heavy expanded metal according to claim 1 or 2, wherein the crushed through holes in the plate are expanded by being forced open. (4) forming a laminated plate by alternately laminating metal plates with adhesive-coated zones and release agent-coated zones on both sides alternately in the longitudinal direction and raw metal plates; A method for manufacturing heavy expanded metal comprising the step of expanding a release agent coated zone in the laminate. (5) In the process of forming a laminated plate by alternately piling metal plates with adhesive-coated zones and release agent-coated zones on both sides in the longitudinal direction and metal plates in their raw form, 4. A method for manufacturing heavy expanded metal according to claim 4, wherein the stripping agent application zones of the plate are arranged in a staggered manner in the longitudinal direction. (6) Claims (4) or (5) in which the laminate is cut into a predetermined thickness in its longitudinal direction, and the release agent coated zone of each cut laminate is expanded. The method of manufacturing the heavy expanded metal described.