TW201117949A - Method of forming shell mold and high strength ceramic or metal-ceramic composite prototype using such shell mold - Google Patents

Abstract

The invention provides a forming method of forming a shell mold and a method of forming a high strength ceramic or metal-ceramic composite prototype using such shell mold. The shell mold according to the invention is constituted by a plurality of successive solidified forming material films. The method of forming the shell mold according to the invention is first to pave a plurality of layers of forming material in sequence on or above a working platform; after paving of each layer of forming material, to proceed irradiation of a radiation beam on said layer of forming material according to a corresponding sectional pattern to form said solidified forming material film; and eventually, to remove the retained forming material on the plurality of solidified forming material films to obtain the shell mold.

Description

201117949 6. DISCLOSURE OF THE INVENTION: TECHNICAL FIELD The present invention relates to a forming method for forming a shell mold and forming a high-strength ceramic or cermet composite using the shell mold The method of material prototype, or the molding method of using the shell mold to make a > [Prior Art] Rapid prototyping (RP) forming technology uses layered processing technology to automatically create 3D solid objects in accordance with the three-dimensional geometry constructed by computer-aided design (CAD). Rapid prototyping technology overcomes geometric corners that cannot be machined by tooling, automating solid freeform fabrication (SFF), and molding prototypes without shape constraints. So 'rapid prototyping technology is especially suitable for forming workpieces with complex contours. The materials that can be used for rapid prototyping are divided into photosensitive resin, enamel, metal, ceramics and composite materials. However, ceramic materials are particularly worthy of development because of their high strength, high melting point, corrosion resistance, and low cost. So far, the rapid prototyping technologies that can be used to make ceramic products are: (1) stereolithography apparatus (SLA), (2) selective laser sintering (SLS), and (3) stack manufacturing. (Laminated object manufacturing, LOM), (4) three-dimensional printing (3DP), (5) fused deposition modeling (FDM), etc., all of the above methods are directly laminated to produce ceramic workpieces. However, it is not easy to manufacture high-density, high-strength, complex-shaped ceramic products.

4 6Lunghwa/200904TW 201117949 +: = It has high hardness and _ so that it is not easy to process, because it uses the fast type 2 technology department. Because of the one-fan gas, it provides a molding type for shell molding. The strength of Tao or the metal ceramics is the original composite. In this case, in the present invention, rapid prototyping is used. ^ ^ The slurry is pressed into the mold cavity of the shell mold, and the L-movement is filled with the space and the void of the cavity to create the interior. Complex shapes _£ workpieces, no need to make support structures. Structure. The model used in the invention is rapid prototyping; the branch is mounted as a shell-shaped shell mold, so that a large number of prototypes can be produced quickly and quickly. The other part of the invention is to provide a shell mold that is manufactured by rapid prototyping technology, and then cooperate with vibration, vacuum, and other techniques to make a manufacturing method of Tao Jing products. This is a ceramic workpiece with 4:^, degree (300 MPa or more), high density (95% or more), and high precision (U 25em or less). Further, another aspect of the present invention is to provide a method of molding a high strength cermet composite using a shell mold manufactured by a rapid prototyping technique. Further, another aspect of the present invention is to provide a molding method for turning a silicone mold by using a shell mold manufactured by a rapid prototyping technique. Thereby, the ceramic slurry or the cermet composite slurry is pressurized and injected into the hole of the silicone mold, and after drying, the ceramic green workpiece or the cermet composite composite material workpiece can be obtained. In addition, you can add chocolate, juice, syrup or formable dishes.

6Lunghwa/200904TW 5 201117949 'This is used to obtain a medium-sized food shape that is highly complex or multi-layered and that is injected into the mold. SUMMARY OF THE INVENTION According to the first aspect of the present invention, the method of forming a product is a shell mold. The shell mold is composed of a layer of a continuously cured M material, wherein N is a natural number. This fine method first prepares a clever material. Next, the molding method first coats the first layer molding material. Next, the molding method is to irradiate a part of the molding material of the first layer with a radiation beam according to a cross-sectional pattern of the layer corresponding to the curing of the first layer to cure the irradiated molding material, thereby forming the curing layer/layer. A thin layer of material. Next, the molding method is to apply the first/acoustic material to the (ζ·-ι) layer forming material, wherein f is in the range of from 2 to N; Then, the fine method is rooted in the cut-off of the thin layer of the first/layer-cured molding material, and the radiation is applied to the molding material of the first/layer molding material to cure the irradiated molding material, thereby forming a layer A thin layer of cured molding material. Next, the molding method is a step of repeatedly coating the Z-layer molding material and irradiating the second layer molding material with the radiation beam until the thin layer of the material layer which is cured by the enamel layer is completed. Finally, the method is to remove the residual g material 'attached to the thin layer of the formed molding material to obtain the shell mold. A molding method according to a second preferred embodiment of the present invention for molding a g ceramic green body by using a shell mold formed by the molding method of the present invention. The molding method firstly uniformly mixes a ceramic powder, a binder, and a county float agent in a ratio and stirs them into a slurry. Next, the molding party & poured the slurry into the cavity of the shell mold and filled the cavity of the shell mold. Next, the molding method performs an ultrasonic vibration process on the shell mold filled with the slurry to make the end of the pottery in the slurry denser. Next, the molding method is

6Lunghwa/200904TW 6 201117949 To fill the shell of the "view" - the line of the line to remove the bubble. Then 'the rich method of the scales look for the shell mold - add y program, so that The gamma of the slurry is heated to produce the chemical = reaction. Finally, the molding process removes the shell mold to obtain a prototype of the strength ceramic formed by the molding method of the present invention. "成冋根^ The third preferred embodiment of the present invention is a fine method for forming a lyophilized mold by the forming method of the invention - metal - Tao Jing ίί: suspending agent according to __ evenly mixed and wins H material Ii, the 模, the mold cavity of the shell mold and fill the mold of the shell mold > i method is to superimpose the shell mold filling the slurry and make the mass The composite powder is more dense. Then, the shell mold is filled with the slurry to perform a vacuuming process to the foam. Then the molding method is to fill the slurry: The bonding agent is heated to produce the gold material. The molding method removes the shell mold to obtain the utilization. A molding method according to a fourth preferred embodiment, which is formed by molding a shell mold formed by a molding method - a tantalum-eight method is manufactured by using a silicone material by a rewinding technique. The molding method is to form the male mold and the female mold into a mold, and the mold has a mold cavity. The advantages and spirit of the drawings can be further improved by the following detailed description of the invention and the state of the art. Understanding. [Embodiment]

6Lunghwa/200904TW 7 201117949 »Month of the reference picture and Figure 1A to 2D, Figure 1 is a metaphor for the forming method of the root 摅太路明1 ί used to form the mold 28 ° in particular, the shell mold is N a layer consisting of a thin layer of a continuously solidified molding material, wherein N is - the natural number indicates the use - fast · Cheng Wei 2 to form the shell mold _ =; the fiscal branch 1 Yang performs the steps and applies the 'axis type material An ultraviolet light-sensitive resin, i-ray laser 'ultraviolet light irradiated by ultraviolet light ί > Bu domain domain lining rhyme of the molding material = or miscellaneous. 5 face thickness' can be prevented in the follow-up In a specific embodiment, the molding material is a soil powder, and the light beam is a laser, and the laser powder irradiated by the laser is sintered together. The ultraviolet light photosensitive resin is used as the molding material of the shell mold, and the shell mold must have a thickness greater than or equal to 1 mm, and the wax shell mold can be directly heated and burned after the subsequent casting of the ceramic green ceramics. Next, as shown in Fig. 1 and Fig. 2A, the molding method 1 according to the present invention performs step S12' to coat the first layer of molding material onto a table 24 by the coating device 22. The table 24 has a plane and is actuated to move up and down along one of the axes perpendicular to the plane (i.e., parallel to one of the z-axis in Figure 2A). According to the present invention, the coating device 22 may include a funnel 222 containing the slurry SL and a squeegee 224 (or a cylindrical tumbler) for uniformly distributing the molding material SL on the table 24. The funnel 222 pushes a suitable molding material sl' to the table 24. The squeegee 224 coats the aforementioned molding material SL into a uniform thin layer molding material SL'. The thickness of each layer of molding material SL can be controlled to be about 〇 lmm. but

6Lunghwa/200904TW 8 201117949 This issue is _, _. And/or as shown in the '-- and FIG. 2B, the system according to the present invention performs step S14 'based on one of the formed thin layers sl which corresponds to the first layer of solidification, and the second shot is formed by the chemical forming device 26. Beam illuminating the portion of the forming material SL of the first layer into the t material SL', wherein the

The beam-irradiated molding material SL•cures, and then forms a thin layer SL of 3L material which is solidified by the = and 曰 (the dark part in Fig. 2). That is to say 'and stick together. As shown in Fig. 2B The cured thin layer forming device 26 includes a laser light generating device 262, a light guiding mechanism 264, and a focusing mirror 206. The laser "beam generating device 262 is configured to generate a laser beam, for example, c〇2 Laser,

Nd: YAG laser, He-Cd laser, Ar laser or UV laser. In a specific embodiment, a laser beam generating device 262 can be used to add a temperature sensor, and the field/drain sensor is used to cool the laser beam to generate a skirt 262. At ° C, the laser beam generating means 262 stops the excitation of the laser light. The light guiding mechanism 264 and the focusing mirror 266 are actuated in parallel according to the cross-sectional pattern of the thin layer SL" of the solidified layer corresponding to each layer, as shown in Fig. 2B. The light guiding mechanism 264 is configured to guide the laser beam to the focusing mirror 266. The focusing mirror 266 is used to focus the laser beam to each of the layer forming materials SL'. In one embodiment, the laser beam has a scan rate of 85 mm/s and a scan pitch of 0.1 mm. The laser power is i〇w. In a specific embodiment, a jet tube can be attached to the focusing mirror 266. The ejector tube is used to introduce low-pressure air and is quickly ejected through its nozzle, which prevents the molding material from splashing and attaching to the focusing lens during laser beam scanning, which affects the accuracy of laser beam scanning. 5 5;

6Lunghwa/200904TW 201117949 Also shown in Fig. 2B, the light guiding mechanism 264 according to the present invention includes a plurality of fixed counter-machines and a mirror that can move the χγ plane as shown in Fig. 2B. For example, reference numerals 264a and 264b in FIG. 2 denote fixed mirrors, and reference numeral 264c denotes a mirror that can be actuated to move along an axis of the X-axis shown in parallel with FIG. 2B, indicating that the 264d symbol can follow the mirror. 264c is actuated and is movable along a mirror that is parallel to one of the gamma axes shown in Figure 2B. The focusing mirror 266 moves with the mirror 264d. In a specific embodiment, the cured thin layer forming device 26 according to the present invention has a laser beam scanning operation range of 45 〇mm x 25 〇mm, a maximum speed of 3000 rmn/min or more, and a χγ axis repeatability design. Another method of ± 〇 = mm °, the present invention can also use galvanometer scanning to focus the laser beam on each layer of molding material SL. / Next, as shown in FIG. 1 and FIG. 2C, the molding method 1 according to the present invention performs step S16, and the table 24 is actuated to descend a distance along the axis of the z-axis in parallel with the second axis (a thickness of a thin layer). Therefore, it is not necessary to re-adjust the focus of the cured thin layer forming device 26 after the subsequent application of a new layer of the molding material. In addition, it should be emphasized that in practical applications, each layer of the forming material g layer is not necessary to have the same thickness. Next, as shown in FIG. 1, the molding method 1 according to the present invention performs step S18, and the coating device 22 applies the z-layer molding material to the material, "the system ranges from 2 to N. Integral index. Subsequently, the molding method 1 according to the present invention performs step S20, and irradiates with a laser beam emitted from the solidified layer forming device 26 according to the cross-sectional pattern of the thin layer SL of the molding material corresponding to the first layer. The z-th layer molding material SL, a part of the molding material. Similarly, the z-th layer molding material SL, which is partially irradiated by the laser beam, is added and subtracted to generate a hard 彳b reaction knot, thereby forming the

10 6Lunghwa/200904TW 201117949 22) The tantalum sheet forming device 26 heats each layer of the forming material 枓SL and further automates manufacturing. X 珂 珂 ΪΪ ΪΪ 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据If the result of the determination in step S22 is negative, the molding method of the present invention is executed in step S16, and the player is activated.

L is separated (thickness of a thin layer), and step S18 is followed: if the result of the determination in step S22 is affirmative, the molding method 1 according to the present invention performs step S24' with a removal device (not shown in FIG. A, FIG. 2B, and FIG. 1C) removing the residual molding material SL' attached to the n-layer cured molding material thin layer sl" to obtain the shell mold 28 as shown in FIG. 2D. The wiper of the embodiment is capable of spraying a liquid (for example, water) to remove the thin layer SL of the molding material adhered to the N layer, and the residual molding material SL/., see FIG. 3 and FIG. 4, FIG. A flow chart of a molding method 3 according to a second preferred embodiment of the present invention is shown. The molding method 3 according to the second preferred embodiment of the present invention is used to form a shell mold formed by the molding method according to the present invention. 28 is used to form a ceramic green body. Figure 4 is a schematic view showing the molding of the ceramic mold by using the shell mold 28. As shown in Fig. 3, the molding method 3 according to the present invention first performs step S30 to form a ceramic. Powder, a binder and a suspending agent The ratio is uniformly mixed and stirred into a slurry. In one embodiment, the ceramic powder may be bismuth carbide (Sic), titanium carbide (TiC), nitriding cerium (Si3N4), titanium oxide (Ti02), and oxidized smelting (A1203). ),

6Lunghwa/200904TW 201117949 Sodium carbonate, calcium carbonate, lead stannous acid (strontium), graphite, cerium oxide powder, titanium oxide powder, cerium oxide, cerium carbonate, barium titanate, mica powder, lead oxide, iron oxide, potassium oxide A powder of zinc oxide powder, tricalcium phosphate, hydroxyapatite, chitin, Na20, CaO, p205, Si〇2, MgO, or the like, or a mixed combination of the above materials. In one embodiment, the binder may be silica sol, titania sol, alumina sol, oxidized sol, and polyvinyl alcohol (PVA). , or a combination of the above ceramics sol. In one embodiment, the suspending agent may be particulate mica powder, polyacrylic acid (PAA), polymethacrylic acid (PMAA), polyethyleneimine (PEI), and polymethacrylate (PMAA-Na, ΡΜΑΑ- ΝΉ 4), cerium oxide, titanium oxide, oxidized wrong, sodium citrate or clay, and the like. In one embodiment, the composition of the material is 65 to 55 wt% of the powder, 40 to 30 wt% of the binder, and 3 to 5 wt% of the suspending agent. The Tauman powder, the binder and the suspending agent are mixed in proportion and stirred by a homogenizer to form a uniformly micronized ceramic slurry. The viscosity of the slurry is about 1500~6000mPa · s with proper fluidity and high proportion of ceramic components. The picker' is shown in Fig. 3 and Fig. 4'. The molding method 3 according to the present invention performs step S32, and the slurry 30 is poured into the cavity of the shell mold 28 and fills the cavity of the core 28. As shown in Fig. 4, the aggregate 30 is contained in a volume of 5|%29 and poured into the cavity of the shell mold 28. The shell mold 28 also has an auxiliary spout 282. Also shown in Fig. 4, the outside of the shell mold 28 is reinforced with a filler material 32 (e.g., 'foam resin) to keep the shell mold from deforming. Next, as shown in FIG. 3, the molding method 3 according to the present invention performs step S34 to perform an ultrasonic vibration program on the shell mold filling the slurry.

6Lunghwa/200904TW 12 201117949 The ceramic powder in the slurry is more dense. The density of the ceramic slurry can be increased to 95%. Next, as shown in Fig. 3, the molding method 3 according to the present invention performs step S36 to perform a vacuuming process on the shell mold filling the material to remove bubbles in the polymer. Next, as shown in FIG. 3, the molding method 3 according to the present invention performs step S38' to perform a heating process on the shell mold filling the slurry, so that the adhesive of the material is heated to generate the chemical condensation. Glue reaction. Added in ceramic slurry

The bonding agent is an oxide sol. The principle of bonding is a gel reaction. After the oxide sol is heated, the atomic bonds formed by the evaporation of the water molecules cause the oxide bath gel to bond the other ceramic particles in the early stage. together. Therefore, the slurry is slowly heated (heating rate l ° C / min) to evaporate water molecules, so that the ceramic slurry can be solidified. The faster heating rate causes the slurry to solidify rapidly into a ceramic green body, which causes the moisture in the slurry to not completely evaporate. The poor solidification effect will result in a decrease in the strength of the sintered ceramic product. In addition, the heating temperature cannot be directly raised to 1〇〇>c to facilitate evaporation of water, because the model made of the photosensitive resin starts to deform at 5 〇t or more, so the heating temperature should be below the scale pit, so that it gradually solidifies &; ceramic raw chain. Finally, as shown in Fig. 3, the molding method 3 according to the present invention performs the step S39' to remove the shell mold to obtain _£生&. After the transfer material is completely solidified, first, the filling reinforcement material on the outside of the model is recorded and the resin is molded to obtain a high-density shouting chain. Shouting "Before heat treatment, the strength of the part is increased by heat equalization to increase the density of the raw material, after sintering. It can be improved in the specific embodiment - in order to avoid squeezing the sputum in the sintering, you can put the pottery on the emulsified pure underlying pad - the graphite floor (also used in the oxidation base)

6Lunghwa/200904TW 13 201117949 board), and then placed in a high temperature furnace to first heat to 1UTC (heating rate 5t: / min) to remove residual moisture in the ceramic green body. Then, the temperature is raised to a temperature of HTC/min to maintain a temperature of 16 ° C or more for 2 hours to cause solid sintering between the ceramic particles, followed by cooling to room temperature in the furnace to obtain a high strength, high density Tauman product. (Strength reaches 300 MPa or more). In a specific embodiment, the ceramic green body has a minute feature size, and the shell mold has a fine exhaust slit corresponding to one of the minute feature sizes to discharge the minute feature size of the ceramic green body. gas. In practical applications, if the resin shell mold is used, the minimum thin layer thickness can reach 1〇vm, and with the “fine structure exhaust design, the residual gas at the fine size in the cavity can be excluded. So when the ceramic slurry ( The fineness of the fine ceramic powder in the slurry can be as follows: After the solidification molding, the micro-feature size of the ceramic green body can reach 20 // m or less. The specific implementation of the 'silk knot ship epoxy turning (ep) powder. , in 2〇0~3〇〇<5(:temperature, the inner ceramic powder is bonded into a hollow ιίην,,, to 1〇〇〇t> C for sintering and removing the epoxy resin, plus & ^^ is sintered into a ceramic finished product, and then the liquid mash is melted into the product; the pores left by the epoxy resin are used to enhance the ceramics, and the molding method is formed according to the molding method 3 of the present invention. The structure of the ceramic hole. After the ° can also be made to have a complex internal shape or internal fiber fiber can be attached to the secret and can be added carbon fiber wire, crane fiber, enamel fiber, so that the production of fiber _ effect to improve the edge Example 2® Five Series shows the third best example according to the present invention 'Is a flowchart according to a third specific preferred embodiment of the present invention

6Lunghwa/200904TW 14 201117949 The molding method 5 of the example is for molding a metal/ceramic composite green body by using a shell mold formed by the molding method according to the present invention. As shown in Fig. 5, the molding method 5 according to the present invention first performs step S50 to uniformly mix a metal powder, a binder and a suspending agent in a ratio and stir into a slurry. In one embodiment, the slurry is comprised of 87 to 75 wt% metal powder, 20 to 10 wt% binder, and 3 to 5 wt% suspension. In another embodiment, the composition of the slurry is 85 wt% of Lugang steel powder, 10% by weight of oxidized crushed gel binder, and 5 wt% of particulate cloud mastic suspension. After the slurry is prepared, it is placed in a sintering furnace and heated to a high temperature of 1200 ° C or higher for sintering treatment, and the tensile strength after the polishing treatment can reach 700 MPa or more. Next, as shown in Fig. 5, the molding method 5 according to the present invention performs the step S52, pouring the slurry into the cavity of the shell mold and filling the cavity of the shell mold. Next, as shown in FIG. 5, the molding method 5 according to the present invention performs step S54' to perform an ultrasonic vibration process on the shell mold filled with the slurry to make the composite powder in the slurry more dense. . Next, as shown in Fig. 5, the molding method 5 according to the present invention performs step S56 to perform a vacuuming process on the shell mold filling the slurry to remove bubbles in the slurry. Then, as shown in FIG. 5, the molding method 5 according to the present invention performs step S58, and performs a heating process on the shell mold filling the slurry, so that the binder of the slurry is heated to produce the chemical gel. reaction.

6Lunghwa/200904TW 15 201117949 Finally, as shown in Fig. 5, the molding method 5 according to the present invention performs step S59 to remove the shell mold 'to obtain the metal-ceramic composite green body. After the slurry is completely solidified, the shell mold is removed to obtain a high-density metal-ceramic composite green body. The metal-ceramic composite green body may also be subjected to thermal pressure equalization before heat treatment to increase the density of the green body, and the strength of the metal-ceramic composite material may be improved after sintering. The metal-ceramic composite green body can also be sintered in a vacuum furnace or a protective gas (e.g., nitrogen) environment to prevent oxidation of the metal and improve the mechanical properties of the product. According to another preferred embodiment of the invention, the metal powder is coated with a layer and the molecular material (e.g., PE, PP) is substituted for the binder. After the shell molding was carried out according to the present invention, the polymer material was removed by preheating and adding a quenching agent, and heated in a vacuum sintering furnace to 12 Torr. (: The above high temperature is subjected to sintering treatment, that is, a cermet composite product is obtained. Further, see the figure/, and Fig. 6 is a flow chart showing a molding method 6 according to a fourth preferred embodiment of the present invention. The fourth preferred embodiment 6' is used to form a diamond mold according to the shape mold formed by the molding method of the present invention. S60 if: Shougen County (4) is a financial method 6 Wei system execution step L Λ The technical household material is made into a public mold and a female i. The second receiving is shown in Fig. 6. According to the molding method 6 of the present invention, the step is performed, and the mold is completed by clamping the mold. Moulding the mold, the mold of the metal pottery new material slurry pressure injection mold, borrowing '

The above-mentioned ceramics and metal ceramic composite materials used in the present invention 6Lunghwa/200904TW 16 201117949 The slurry has good fluidity and can flow to various parts of the shell mold model (including complex shapes and small feature sizes) . After the ceramic slurry and the cermet composite slurry are solidified, the ceramic green or cermet composite green body having the same shape as the cavity can be reproduced and the same surface roughness as the mold surface can be achieved. It can be mass produced in a room temperature environment. In addition, the general model is a solid structure. The Lai type used in the present invention is made into a thin shell shape by rapid prototyping technology, so that the mold manufacturing time can be greatly reduced and the ceramic prototype can be quickly produced.

^ From the above detailed description of the preferred embodiment, it is desirable to be able to change the interpretation; ====

6Lunghwa/200904TW 17 201117949 BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a flow chart showing a molding method according to a first preferred embodiment of the present invention. Figure 2A is a schematic diagram of the use of rapid prototyping equipment to form a shell mold during the manufacturing process of the coating material. Figure 2B is a schematic diagram of the formation of a shell mold using a rapid prototyping apparatus during the radiation scanning curing process. Figure 2C is a schematic diagram of the use of rapid prototyping equipment to form a shell mold after laminating a multi-layer cured layer of formed material. Figure 2D is a schematic view of a shell mold in accordance with a molding method of a first preferred embodiment of the present invention. Figure 2 is a flow chart of a molding method in accordance with a second preferred embodiment of the present invention. Figure 4 is a schematic view showing the formation of a ceramic green body by using a shell mold according to the present invention. . Figure 5 is a flow chart showing a molding method in accordance with a third preferred embodiment of the present invention. A flow chart of a molding method according to a fourth preferred embodiment of the present invention. [Description of main component symbols] Bu 3, 5, 6: Molding method S10~S24: Method steps

18 6Lunghwa/2009〇4TW 201117949

2: molding apparatus 222: funnel 24: table 262: laser beam generating device 264a, 264b, 264c, 264d: 266: focusing mirror SL: molding material SL": cured molding material thin layer 282: auxiliary rinsing port 30 : Ceramic slurry S30 to S39: Method steps S60 to S62: Method step 22: Coating device 224: Scraper 26: Curing thin layer forming device 264: Light guiding mechanism mirror SL': Molding material layer 28: Shell mold 29 : Container 32: Filling material S50~S59: Method steps

19 6Lunghwa/200904TW

Claims (1)

201117949 VII. Patent application scope: 1. A molding method for forming a shell mold, which is composed of a thin layer of a continuously solidified N-layer molding material, N is a natural number, and the molding method comprises the following steps: (a) applying a first layer of molding material on a work surface; (b) illuminating a portion of the molding material of the first layer molding material with a radiation beam according to a cross-sectional pattern of the formed thin layer corresponding to the curing of the first layer To cure the irradiated molding material to form a thin layer of the first layer of the cured molding material; (c) coating the z-th layer molding material on the (n) layer molding material, the z. system ranges from 2 to N An integer index; (d) irradiating the molding material of the first layer molding material with the radiation beam according to a cross-sectional pattern of the layer of the molding material corresponding to the § hai/layer curing to cure the irradiated molding material, thereby forming The layer of the cured layer of the cured layer; (e) repeating the steps (d) and (e) until the thin layer of the cured material is completed; and (f) removing the adhesion to the layer of N Residual molding of a thin layer of molding material Material 'to obtain the shell mold. For example, the application is directed to a shank-like forming method, wherein the forming material is an ultraviolet photosensitive resin, and the radiation beam is an ultraviolet laser. The molding method of claim 2, wherein the shell mold has a thickness greater than or equal to 0.5 mm. The molding method of claim 1, wherein the molding material is a wax powder, and the radiation beam is a laser. The method of forming the invention of claim 4, wherein the shell mold has a thickness greater than or equal to 1 mm. 6. A molding method for molding a ceramic green body by using a shell mold formed by the molding method according to claim 1 of the patent application, the molding method comprising the following steps: a ceramic powder, a binder, and a suspending agent Mixing uniformly in a ratio and stirring into a slurry; ° pouring the slurry into the cavity of the shell mold and filling the cavity of the shell mold; performing an ultrasonic wave on the shell mold filling the slurry a vibration process to make the ceramic powder in the slurry more dense; a vacuuming process is performed on the shell mold filling the slurry to remove bubbles in the slurry; corresponding to the shell mold filling the slurry A heating process is performed to cause the binder of the polymer to be heated to produce the chemical gel reaction; and the shell mold is removed to obtain the ceramic body. 7. 方法ίΐ's method described in the 6th item, in which the end of the scorpion calculus is reversed = (S1C), titanium carbide (Tic), nitriding stone (§ surface), oxidized chin, helium (A1203), carbonic acid Nano, carbonate, mischin, 石墨τ), graphite, oxygen-cut powder, oxidized heterocycle, oxidized error, carbonic acid p rT cr milk-based discite, chitin, Na2〇, CaO, PA, SA, Mgo and a molding method according to the group of the powders of the mixed combination, wherein the binder is selected from the group consisting of a sol '. '合~二 TS〇1), a titanium oxide lysing tania sol), an oxidation / / umma s. ), the error-reducing sol 'polyvinyl alcohol (four) (four) & 〇! 6Lunghwa/200904TW 21 8, 201117949 PVA) and the combination of the Wei and the combination of the shattering group... 9. The molding method described therein, wherein the suspending agent is selected == granule mica powder, polyacrylic acid (ΡΑΑ), Polymethyl methacrylate (ρμαα), => olefinic amines and polymethacrylates (pMAA_Na, ρμαα_ into the group, oxidized chin, oxidized, sodium sulphate and clay) The molding method according to the item 6, wherein the composition of the slurry " plus / ° ceramic powder, 40 to 30 wt% of the binder and 3 to 5 wt% of the suspending agent 0 12, 13, H specifically her around the molding method described in Item 6, wherein the hybrid agent is ep〇xy powder, and the ceramic green body is bonded at 200~30 (TC temperature) Molding, and then heating to the surface ^: 瑕 sintering and removal, wailing, "remediation" and then heating to (four). The above is done into sintering - shouting the finished product, the stipulation into the person, the ceramic enamel finished towel The remaining pores are used to enhance the hardness and strength of the finished ceramic product. For example, please refer to the patent formula (4) 6 for the method of making money, wherein the slurry is added with carbon fiber wire, tungsten fiber wire or boron fiber wire. The molding method according to the item, wherein the ceramic green body has a minute feature size, and the shell mold has a fine exhaust slit corresponding to one of the minute feature sizes to discharge the minute feature size of the ceramic 14. The molding method according to claim 6, wherein the outer side of the shell mold is reinforced by a filler material. 15. A shell formed by the molding method according to claim 1 of the patent application. Molding a metal - The method for molding a green composite material, the molding method 6Lunghwa/200904TW 22 201117949 comprises the following steps: uniformly mixing a metal powder, a binder and a suspending agent into a slurry; Pour into the cavity of the shell mold and fill the cavity of the shell mold; perform an ultrasonic vibration program on the shell mold filled with the slurry to make the composite powder in the slurry more dense; Filling the shell mold of the slurry to perform a vacuuming process to remove bubbles in the slurry; and performing a heating process corresponding to the shell mold filling the slurry, so that the #-bonding agent of the slurry is Heating to produce the chemical gel reaction; and removing the mold to obtain the metal-ceramic composite material. The molding method according to claim 15, wherein the composition of the slurry is 87. 〜75wt% metal powder, 20~l% by weight of a binder, and 3~5% by weight of a suspending agent. The molding method according to claim 15, wherein the composition of the slurry is 85 wt% of 10/ Zm stainless steel powder, lOwt% oxidized stone a binder and a suspending agent of 5 wt% of the particulate mica powder. 18. A molding method for molding a metal-ceramic composite raw material by using a shell mold formed by the molding method according to claim 1 of the patent application, the molding The method comprises the following steps: uniformly mixing a metal powder coated with a polymer material with a suspension agent in a ratio and stirring into a slurry; ~~ pour the slurry into the cavity of the shell mold and fill it up a cavity of the shell mold; performing an ultrasonic vibration process on the shell mold filled with the slurry to make the composite material powder in the slurry more dense; 23 6 Lunghwa/200904TW 201117949 A vacuuming procedure is performed to remove the slurry and heat the material to remove the material from the shell mold to obtain the metal-ceramic composite material. 19. The molding method according to Item 18, wherein the knife material between the metal powder is polyethylene (ΡΕ) or polypropylene (ρρ). 20. The method for molding a shell mold plastic mold formed by the molding method according to the first aspect of the patent application, the method comprising the following steps: · using a refining technology to make a male mold And a master mold; and the silicone mold has a mold cavity formed by clamping the male mold with the master mold. , 24 6Lunghwa/200904TW