TWI269814B - Method used to fabricate a gas-permeable steel mold - Google Patents

Abstract

This invention is about a method to fabricate a gas-permeable steel mold. The molding fixture is made by piling fixed blocks to form a disposable space wherein polymeric wires are arranged and fixed within it. Metallic powders and binders are mixed together and placed into the disposable space to completely embed the polymeric wires to form a green compact. The green compact is then heated in a sintering furnace to make the polymeric wires completely be evaporated. After the green compact is cooled, the solidified gas-permeable metallic product can be used as a steel mold.

Description

1269814

V. INSTRUCTIONS OF THE INVENTION (1) [Technical street field to which the invention belongs] The present invention relates to a method for manufacturing a gas permeable mold steel, which is mainly characterized in that a polymer wire is fixed in a molding die, and a raw embryo force is formed. After that, it can be made into a metal finished product with venting holes for use as a steel for the tool. ^ ^ [Prior Art]

According to the progress of the current precision manufacturing technology, the design of various electronic components has been developed to design with "micro-components". Therefore, the mold manufacturing of the parts is very important under the requirements of precision and reliability. However, since the mold for manufacturing the part has poor gas permeability, when the molded part is shot, it is easy to form a water wave-like ", 1 grain" on the surface of the part, which affects the appearance of the part, and is relatively thin in section. = When the mold is opened after molding, due to the pressure difference between the inside and outside of the mold, the f will cause cracking or breaking when it is ejected, so that the defective rate of the part is in the right direction, = the permeability of the puller is not good. Disadvantages, therefore, the production of breathable molds made of:: ί gas mold is mainly made of porous metal material with breathability": fine through hole manufacturing method, such as invention announcement No. 5 936 94 t final ί 全 金属 金属 金属 金属The patent case is mainly made up of the following operations-procedures using the 丨·matching chapter. The base material is selected from the powders of the pure metal or the alloy thereof, and the melting point of the filler or the fine powder of the test solvent is used as the filling material. 2. The sound α 2 ί must be higher than the sintering base material. Melting point. &~ Private a process: mixing the above sintering base with the filling

1269814 V. INSTRUCTIONS (2) Mixing and evenly distributing the filler in the mixed mixture, the water is good and has particles 3. Discharge the filling of the water or the alkaline solvent ultrasonic cleaning. 4. Residual solvent in the cleaning chamber 5. The porous metal in the through-hole hole wall of the drying work is such that the perforated metal can be arranged in a fine pore structure, and there is no between the cavities in the formation of the powder or the hole. Since the method is reached, it is used in this case. This is the chemical tank that has the above-mentioned addition of the sticky and dense pile, and then burns the tissue type filling, and removes it to take the finished product. Industry: Metal embryos with a bonding agent and an additive, and then a junction temperature: According to the above, an ultrasonic plasticizer is selected, and the sintering is dried and shaped and preheated to form a part. The metal blank is filled with a compatible solubilized toe, vortex effect, and the gold is used to form a clear water to form the porous semi-finished product: the water in the clearing room is further dried, and the product is manufactured by the above steps. Made of a transparent porous metal, the end of the metallurgical molding manufacturing f small, position and continuous continuous connection, but interrupted its ventilation function, still not ideal. The inventors have several shortcomings in the prior art, so that the rest of the production process produces a micro-cutter having a fine pore gas, and the venting hole system of the part is not effective, so once the condition is met, , the permeability is not 100% gas permeable, but the research is focused on the base material and the charge to remove the porous semi-perforated pore structure of the through-hole wall which is soluble and soluble in the fine through-holes in the genus Because of the irregularity - JjI, its breathable venting gas will not be guaranteed, porous metal, and more

Page 6 1269814 V. INSTRUCTION DESCRIPTION (3) Sub-test and improvement, [Explanation] The object of the present invention is to provide a pressure difference outside the mold, and to install the shape and the matching arrangement of the zero-mould mold at the time of manufacture and to The characteristics are fixed in the stack, and after the formation of the high-component agent is fixed in the inter-frame, the whole sheath is placed in the middle of the sintering furnace and the wire is completely evaporated. The heating of the finished metal is stopped for the first time. Please refer to 1 for the implementation steps as follows: A. Build the upper circumference of the constitutive shape, and use the arrangement of four accommodating spaces (2 1 ) to provide a number of micro-turns to create the system of the present invention. The present invention has a container wire for the solid, and is used for providing a mold for the cooling of the raw embryo, and does not set it, and a different venting mold is constructed to form the space; B• Forming the capacity of the block to form the raw embryo heating, after the formation of the embryo, and the coagulation steel makes the ventilated hole have the ventilation effect, resulting in the damage of the part forming tool The gas position can shorten the manufacturing method of the steel material. · The system uses the molding tool, and the raw embryo: the metal powder is placed in the space, and will be high; c. Heat molding: the raw embryo is covered with a venting hole; D · Solid form to have a transparent use of 0 I & amp amp 命 命 命 命 另外 另外 另外 另外 另外 另外 另外 另外 另外 另外 另外 另外 另外 另外 另外 另外 另外 分子 分子 分子 分子 分子 分子 分子 分子 分子 分子 分子 分子 分子 分子 分子 分子 分子 分子 分子 分子As shown in the figure, the main manufacturing method of the present invention is as follows: as shown in the second figure, the fixing block (2) of a flat plate (j) can be fixed relative to the stack, and the ring is formed into a molding tool, and the fixing blocks are arranged. (2) The upper system is relatively equidistant and small (2 2 ) [as shown in the third figure], and

Page 7 1269814 V. Description of invention (4)

固 Ϊΐ 2) and so on: each through hole (22) is connected with a polymer wire tamping two 2): a cross-interlaced polymer wire (2)), which can be densely covered in the (1) shape '俜 可 可 space (21) The shape of the fixing block (2) of the forming tool is set in accordance with the shape required for the mold. Β·Formation of raw embryos: As shown in the fourth figure, the metal powder and the adhesive are kneaded and placed in the accommodating space (21) of the fixed blocks (2), and the polymer is completely filled. The wire (23) is coated therein to form a green embryo (3). 0 C. Heat molding: the raw embryo (3) is placed in a sintering furnace for heating, as shown in the fifth figure, Increase the speed of 3 t in minutes, continue to heat to 30 ° C, then control the temperature of 3 ° ° C for 1 hour, then continue to increase at a rate of 3 ° C per minute, continue to heat to 600 ° C Then, control the temperature of 60 ° C for 1 hour, then continue to heat up to 900 ° C at a rate of 3 ° C per minute, then control the temperature of 900 ° C for 1 hour, then The heating is stopped, wherein when the temperature is heated to 6 〇〇 ° C in 3 ,, the polymer wire (23) coated in the green embryo (3) can be completely evaporated, and the green embryo (3) A venting hole (3 1) is formed in an equidistant arrangement (as shown in the sixth figure).

D. Metal finished product: When the heating is stopped, the raw metal (3) is gradually cooled, but is solidified at normal temperature to form a finished metal product (3A) having a vent hole (31). When in use, as shown in the seventh figure, the shape of the finished metal (3 A) is based on the shape of the mold (4) and the installation position, so it can be breathable. Metal finished product of hole (3 1)

1269814 V. INSTRUCTIONS (5) (,) After simple processing, it can be installed in the mold (4) for exhaust gas t ^ f, and through the metal finished product (3A) venting holes (31 ) Excellent, breathable 'will not have any obstruction to interrupt the exhaust situation, the disaster piece (5) has the function of releasing pressure when demoulding, without causing damage to the parts (5) due to the difference of internal and external pressure. According to another embodiment of the present invention, as shown in the eighth and ninth drawings, in the program for constructing the mold, the fixed block (6) of the frame can be stacked and fixed on a flat plate (丨). And a meshed polymer wire (7) is placed between each of the fixed blocks (6), and is stacked by the fixing block (6)_ff to form an accommodating space (61). The molding tool, and the non-reticulated polymer wire (7) can be equally stacked in the accommodating space (61). Thus, the same is formed through the B• forming the raw embryo, c•heat forming and D·forming. A finished product, etc., can also form a finished metal product with venting holes for use as a mold. According to still another embodiment of the present invention, as shown in the tenth and eleventh drawings, in the program of the A• building type tool, a plurality of molecular wires (8) can be vertically penetrated through a bottom plate (8). 1), using a plurality of frame-shaped fixing blocks (6) stacked and fixed, and between each fixed block (6), a mesh-like polymer wire (7) is placed, by means of a fixed block (6) After being stacked separately, and forming a molding tool having an accommodating space (61), the vertical high-dividing circle wires (8 1) and the mesh-shaped polymer wires (7) may be equidistantly vertical. When the metal powder and the bonding agent are kneaded in the accommodating space (61), the metal powder and the bonding agent are placed in the accommodating space (61), and then the top end is covered with a cover plate (9), the cover plate (9) A through hole (9 1 ) is provided on the polymer wire plate (81) for the polymer wire

Page 9 1269814 V. Inventive Note (6) (8 1 ) Through-fixing, so, through the same process of forming raw embryos, C. thermoforming and D. forming finished products, the same can be formed to have a venting hole. The finished metal is used for the manufacture of molds. Therefore, it can be seen from the above description that the embodiment of the present invention has the following advantages: 1. The invention is fixed by a fixed block to form a molding die with a receiving space, and a polymer wire is fixed between the fixing blocks. After the embryo is formed, it evaporates and disappears after heating, and a vent hole is formed for use as a mold steel. It can have a gas permeable effect to balance the pressure difference between the inside and the outside, so that the part can be demoulded without causing damage to the part. _ 2 · According to the invention, the shape of the mold can be designed according to the shape of the mold and the position of the exhaust, so as to fit the different exhaust positions of the mold, and the time and cost of the additional processing can be shortened. In summary, the present invention has indeed been available for industrial use, and the features of the same invention are not known and publicly available. Therefore, the present invention can meet the application requirements of the invention patent and file a patent application according to law. , I urge you to conclude as soon as possible and grant a patent to the 5th.

Page 10 1269814 BRIEF DESCRIPTION OF THE DRAWINGS The first figure is a manufacturing flow diagram of the present invention. The second figure is a schematic diagram of the stacking of the forming tool of the present invention. The third figure is a schematic view of the polymer wire of the present invention. The fourth figure is a schematic diagram of forming a green embryo according to the present invention. The fifth figure is a schematic diagram showing the relationship between the heating time and the temperature rise of the present invention. The sixth drawing is a cross-sectional view of the finished metal product of the present invention. The seventh figure is a schematic view of the metal finished product of the present invention placed in a mold. The eighth figure is an exploded perspective view of another embodiment of the present invention. Figure 9 is a cross-sectional view of a combination of another embodiment of the present invention. The tenth figure is a perspective exploded view of still another embodiment of the present invention. The eleventh diagram is a sectional view of a combination of still another embodiment of the present invention. [Description of component symbols] (1) Flat plate (2) Fixed block (21) Housing space (22) Through hole (23) Molecular wire (3) Raw metal (3A) Metal finished product (31) Vented hole (4) Mold ( 5) Parts (6) Fixing block (61) Housing space (7) Polymer wire (8) Base plate (81) Southern molecular wire (9) Cover plate (91) Through hole

Page 11

Claims (1)

12698i金六, the scope of application for patent A. has a magnetic wire rod B. fixed block to form C. to produce a transparent D. has a transparent method of manufacturing blocks relative to the solid fixed block 3 High polymer type 1. A ventilated mold steel construction constitutive tool: its space forming tool forms a raw material to produce raw embryos; heating into the embryo, the gas L-hole metal gas into the iL hole as applied, in which the stack is fixed Each sub-wire on the block is applied, in which the wire is piled up, the molecular line embryo: the metal space, and the type: the southern part of the coating: stop adding the metal product patent scope, the molding tool set, The manufacturing method of the circumference of the equidistant material is as follows: the system is formed by stacking and fixing the fixed block, and the high-divided powder and the adhesive are fixed in the accommodating space, and then placed at the height. The molecular wire is completely coated therein, and the raw embryo is placed in a sintering furnace for heating, the sub-wire is completely evaporated, and the heat is formed in the raw embryo, so that one item is arranged in one. A through-hole is connected to the high-solidity, which is densely attached to the patent range, and the molding tool is fixed, and is attached to each of the solid-state accommodating materials in one item, and is stacked at equal intervals to form an embryo cooling. After that, as a mold steel, the outer peripheral space of the gas-permeable flat plate has a tiny translucent molecular wire, and the fixed block can be formed on the gas-permeable flat plate, and the space is formed between the blocks. The solidified material is made of die steel, and is formed by forming and smelting, and the mold steel in the vertical space is placed in a frame shape with a metal mold, and the four molds are formed into a zero material, and the cross-cut coffin is made. Fixed mesh in the network space Page 12 1269814 VI. Patent Application No. 4: The method for manufacturing a gas permeable mold steel according to claim 1, wherein the molding tool is vertically fixed on a bottom plate and is divided into wires, and the frame shape is used. The fixing block is stacked on the upper and lower sides, and between each = block, a mesh-shaped polymer wire material is placed, and a molding tool with a receiving space is encircled, and a cover plate is covered at the top end to The fixed polymer wire 'is vertically and horizontally transverse to the accommodating space by the vertical polymer wire and the meshed polymer wire. 5. The method of manufacturing a gas permeable mold steel according to claim 1, wherein the heating molding process is increased by 3 per minute. The speed of the crucible is continuously heated to 300 °C, and then the constant temperature of 300 °C is controlled! After the hour, 're-continue to increase at a rate of 3 ° C per minute, continue to heat to 6 〇〇 ° ° ' and then control the constant temperature of 60 ° C for 1 hour, then continue to heat at a rate of 3 per minute. To 90 0 t, then control the temperature of 9 〇〇t after 1 hour 'then the heating can be stopped. Page 13