WO2017222485A2 - Procédé d'amélioration de matériau - Google Patents
Procédé d'amélioration de matériau Download PDFInfo
- Publication number
- WO2017222485A2 WO2017222485A2 PCT/TR2017/050273 TR2017050273W WO2017222485A2 WO 2017222485 A2 WO2017222485 A2 WO 2017222485A2 TR 2017050273 W TR2017050273 W TR 2017050273W WO 2017222485 A2 WO2017222485 A2 WO 2017222485A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- film
- sheet
- forming
- female part
- laying
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
- B21D22/022—Stamping using rigid devices or tools by heating the blank or stamping associated with heat treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
- B21D22/208—Deep-drawing by heating the blank or deep-drawing associated with heat treatment
Definitions
- the present invention relates to a material improvement method which is developed against wrinkling, thinning and rupture of the material that is being formed in material forming systems.
- plastic forming The forming performed by applying force so as to provide a permanent change of form in materials is called plastic forming or plastic deformation. Materials can be shaped into a desired form making use of this property thereof.
- the materials having the largest share in manufacturing sector are metals and alloys.
- Metallic materials which include metals and alloys such as steel, cast iron, aluminum, copper, zinc, titanium and nickel, generally have good thermal conductivity and good electrical conductivity.
- alloys made of metal mixtures In addition to use of pure metals for these materials, which have features of easy formability and impact resistance, they are also found in the sector as alloys made of metal mixtures in order to attain a development in a specific property and to achieve better features.
- the last form, size, dimension tolerances of the material to be formed, the number and properties of the pieces intended to be produced are important factors in selection of the forming methods. Plastic forming methods are preferred in cases where the number of the pieces intended to be produced is a lot, and production with other methods is impossible with respect to the shape and size.
- Cold forming is the plastic deformations under crystal temperature. Suitability of a metal for forming is very important in the industry. Cold forming is performed under the re-crystallization temperature of the metal. In many cases, limits of cold processes are small because the rupture feature of the metal gradually increases and then at some point it starts to break. A metal in such situation should be heated and cooled again in order to be subjected to cold forming again. During cold forming, grains constituting the metal elongate and they are deformed. In cases of severe deformation, it is very difficult to select the grains under a microscope. The outer surface of a cold formed piece is smooth and shiny due to friction. However if this surface is produced freely during cold forming, it becomes coarse and unsmooth due to the fact that each crystal making up the inner structure of the metal is deformed in a different manner.
- Chipless metal forming is performed by methods such as free and die forging-molding, extrusion, roll forming, plastic pipe manufacturing, wire drawing and plate work.
- the most widely used machines in chipless metal forming are as follows: presses, guillotine shears, bending presses and hooks (brace spots).
- Sheets of raw materials are formed by being pressed between male and female parts via cold or heating pressing method. Wrinkles, thinning and ruptures occur on the material during forming the material between the male and female parts.
- thermoplastic film is applied on the material and by means of the thermoplastic film used in cutting of the material, the corners are ensured to be clean-cut.
- US4239717 an application in the state of the art, discloses a thermoplastic resin material which is used for filling in the cavities occurring on the layer in the compression mold.
- the objective of the present invention is to provide a material improvement method which, during the process of forming the material between the male and female pieces, prevents wrinkling, thinning and rupture of the material.
- Another objective of the present invention is to provide a material improvement method which, during the process of forming the material, enables the material surface to be patterned.
- Figure 1 is a side sectional view of a mold.
- FIG. 1 is a schematic view of the material improvement method.
- the components shown in the figures are given reference numbers as follows:
- Film A mold (1) which is developed against wrinkling, thinning and rupture of the material that is being formed in material forming systems, basically comprises at least one male part (2) which is used for forming the material,
- Steps of the material improvement method (100) of the present invention are as follows:
- Molding (1) process is performed in the material improvement method (100) of the present invention.
- a sheet (4) is placed between the female part (3) and the male part (2) and the sheet (4) is formed between the male part (2) and the female part (3).
- a film (5) is laid on one surface of the sheet (4).
- the sheet (4) desired to be formed is heated until softening temperature of its raw material.
- a film (5) produced from thermoplastic material is laid on the female part (3).
- the heated sheet (4) is laid on the said film (5).
- the thermoplastic film (5) which reaches softening temperature due to the heated sheet (4), is compressed between the male part (2) and the female part (3) and formed under pressure.
- the cavity occurring when the mold (1), which is comprised of a female part (3) and a male part (2), is completely closed is smaller than the sum of thicknesses of the sheet (4) and the film (5).
- the selected thermoplastic film (5) fills in the cavities in the sheet (4) occurring during the molding process. This way, the thinning regions of the sheet (4) are not seen/noticed.
- the material improvement method (100) prevents wrinkling, thinning and rupture of the material during the process of forming the material between the male and female parts.
- a pattern is engraved on the mold (1) surface of the female part (3) or male part (2).
- the material improvement method (100) of the present invention firstly the sheet (4) is heated until the softening temperature of the film (5). Then the film (5) is placed on the sheet (4). The sheet (4) and the film (5), which are arranged one on top of the other, are placed between the female part (3) and the male part (2). The surface of the film (5) becomes patterned when the female part (3) or the male part (2) having a patterned surface is pressed with pressure.
- the material improvement method (100) enables to provide a pattern on the material surface during forming the material by engraving a pattern on the mold (1) surfaces.
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
Procédé d'amélioration de matériau (100) dans des systèmes de formation de matériau ; un moule (1) est utilisé, lequel est développé contre le plissement, l'amincissement et la rupture du matériau qui est formé et qui comprend une partie mâle (2), une partie femelle (3) et la pose d'un film (5) sur la feuille (4) ; et qui est caractérisé par les étapes de chauffage de la feuille (4) (101), de pose du film (5) sur la partie femelle (3) (102), de pose de la feuille chauffée (4) sur le film (5) (103), de compression du film (5) et de la feuille (4) entre la partie mâle (2) et la partie femelle (4) et de leur mise en forme sous pression (104).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TR2016/08390 | 2016-06-20 | ||
TR201608390 | 2016-06-20 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2017222485A2 true WO2017222485A2 (fr) | 2017-12-28 |
WO2017222485A3 WO2017222485A3 (fr) | 2018-04-12 |
Family
ID=60582644
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/TR2017/050273 WO2017222485A2 (fr) | 2016-06-20 | 2017-06-19 | Procédé d'amélioration de matériau |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO2017222485A2 (fr) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4239717A (en) | 1979-05-02 | 1980-12-16 | Paul Wintner | Compression molding procedure for liquid polyester resins |
JP2000167625A (ja) | 1998-12-02 | 2000-06-20 | Tsutsumi Yotaro | ブランクの打抜き方法とパンチ |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06328155A (ja) * | 1993-05-24 | 1994-11-29 | Nippon Steel Corp | マグネシウム薄板のプレス成形方法 |
DE102011116885B4 (de) * | 2011-10-25 | 2018-12-06 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren und Vorrichtung zum Warmumformen und insbesondere zum Presshärten eines mit einer metallischen Korrosionsschutzbeschichtung beschichteten Stahlblechmaterials unter Verwendung eines Schmiermittels |
DE102014215365A1 (de) * | 2014-08-05 | 2016-02-11 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zur Herstellung von warmumgeformten Bauteilen |
-
2017
- 2017-06-19 WO PCT/TR2017/050273 patent/WO2017222485A2/fr active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4239717A (en) | 1979-05-02 | 1980-12-16 | Paul Wintner | Compression molding procedure for liquid polyester resins |
JP2000167625A (ja) | 1998-12-02 | 2000-06-20 | Tsutsumi Yotaro | ブランクの打抜き方法とパンチ |
Also Published As
Publication number | Publication date |
---|---|
WO2017222485A3 (fr) | 2018-04-12 |
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