1272182 九、發明說明： 【發明所屬之技術領域】 本發明係為一種以不同尺寸之粉粒製作複層成品之 方法，特別是指一種依模製品不同部位所需不同之模壁 緻密度，藉由不同尺寸之金屬粉粒製作複層成品之方法 者。 【先前技術】 按，一般之金屬粉粒燒結為金屬塊，係依模製品所 ® 需要之緻密度不同，而以不同粗細之金屬粉粒來燒結成 不同緻密度之模具，然，緻密度要求高的須以較細之金 屬粉粒燒結一體成型，而緻密度要求低的則以較粗之金 屬粉粒燒結一體成型，但模製品之成型，只要在模穴表 面達到所需之緻密度，其模穴成型之模製品即可達到所 需之緻密度，而模具外部之緻密度則較不要求，故模具 整體若以高緻密度之金屬粉粒製成，其成本極高，而若 Φ 以緻密度較低之金屬粉粒製成，雖可降低成本，但模製 品成型之緻密度則無法達到要求，較不合經濟效益。 【發明内容】 本發明係一種以不同尺寸之粉粒製作複層成品之方 法，主要係在製成具有不同透氣性或不同緻密度之複層 成品，其方法為·· (a) 以高分子材料形成一個以上之容納空間，各容 納空間之間具有薄層的高分子材料隔離壁； (b) 選擇不同粒徑但相同材料的金屬粉粒為原料； 1272182 (c) 使不同粒徑的金屬粉料分別置入相鄰的容納空 間中； (d) 取離隔離壁； (e) 進行燒結，使金屬粉粒成型，且高分子材料被 氣化； (f) 冷卻； (g) 完成。 【實施方式】 本發明係關於一種以不同尺寸之粉粒製作複層成品 之方法，如第一、二圖所示，主要方法為： (a) 以高分子材料（1)形成一個以上之容納空間 (11)，各容納空間（11)之間具有薄層的高分子材料隔離 壁⑵； (b) 選擇不同粒徑但相同材料的粒徑大之金屬粉粒 (3)與粒徑小之金屬粉粒（4)為原料； (c) 將粒徑大之金屬粉粒（3)置入容納空間（11) 内，而粒徑小之金屬粉粒（4)則置入相鄰的隔離壁（2)中； (d) 將隔離壁（2)自容納空間（11)抽離，再將金屬 粉粒（3)、（4)施以壓力，使其更為密實； (e) 再進行燒結，使金屬粉粒（3)、（4)成型，且高 分子材料（1)則被氣化； (Ο冷卻； (g)完成。 當使用於微精密射出成型之模具時，請參閱第三圖 1272182 所不□杈製。口之不同部位可能需要不同模壁條件，如 透氣性及平面度等，可於模具⑸之模穴（51)表面設為粒 徑較小之金屬粉粒⑷，㈣具⑸之外部⑽則設為相 同材質且粒彳讀大之金屬粉粒⑶，模具⑸經燒結後， 可將粒徑=金屬純⑷與粒徑大之金屬餘⑶結合 為體形成核具’其粒徑不同但材質相同，燒結後可以 穩定成型，而藉由模具⑸之模穴（51)表面呈較高緻密之 模壁，其模壁粗糖度小，而模具⑸之外部（即非模 部位）則不需高緻密度，其_度大，雜徑大之金屬粉 粒⑶杈粒妈之金屬粉粒⑷價格便宜，將不要求緻^ 度之部位以粒徑大之金屬粉粒⑶成型，可降低模具整體 之成本’因模具⑸之模穴⑸）與外部（52)之金屬二 (3)、（4)之粗細不同，其透氣性亦不同，故可楹 製成產品之品質，本發明可提供具有不同透氣性= 緻密度之模具材料，極具經濟效益；又，本發明1 2 3 : 成型不限於®筒形，可依賴設為方形錢他^材料 【圖式簡單說明】 ^、° 第一圖係本發明之流程圖。 第二圖係本發明之製程流程示意圖。 第三圖係本發明之模具製成之示意圖。 【主要元件符號說明】 (11)容納空間 ⑶金屬粉板 (5)模具 1 南分子材料 2 隔離壁 3 ⑷金屬粉粒 1272182 (51)模六 （52)外部1272182 IX. Description of the invention: [Technical field to which the invention pertains] The present invention relates to a method for producing a multi-layer finished product from powders of different sizes, in particular to a different density of the mold wall required for different parts of the molded article. A method for making a finished product from metal granules of different sizes. [Prior Art] According to the general metal powder granules sintered into metal blocks, depending on the density required by the molding products, the metal powders of different thicknesses are sintered into different density molds. The high one must be sintered and formed into a fine metal powder, and the low density requirement is to form a coarse metal powder, but the molding is formed as long as the desired density is achieved on the surface of the cavity. The molded part of the cavity can achieve the required density, and the density outside the mold is less required, so if the whole mold is made of high-density metal powder, the cost is extremely high, and if Φ Therefore, the metal powder particles with lower density can be used to reduce the cost, but the density of molding products cannot meet the requirements and is less economical. SUMMARY OF THE INVENTION The present invention is a method for producing a multi-layer finished product from powders of different sizes, mainly in the production of a multi-layer finished product having different gas permeability or different densities, wherein the method is (a) The material forms more than one accommodating space, and a thin layer of polymer material partition wall between each accommodating space; (b) selecting metal powder particles of different particle sizes but the same material as raw materials; 1272182 (c) making metal of different particle sizes The powder is placed in the adjacent receiving space; (d) the separation wall is removed; (e) sintering is performed to form the metal particles, and the polymer material is vaporized; (f) cooling; (g) completion. [Embodiment] The present invention relates to a method for producing a multi-layer finished product from powders of different sizes. As shown in the first and second figures, the main methods are as follows: (a) forming more than one material by the polymer material (1) a space (11) having a thin layer of a polymer material partition wall (2) between each of the accommodation spaces (11); (b) selecting a metal particle (3) having a different particle diameter but having a large particle diameter of the same material and having a small particle diameter The metal powder (4) is used as a raw material; (c) the metal powder particles (3) having a large particle diameter are placed in the accommodating space (11), and the metal powder particles (4) having a small particle size are placed adjacent to each other. (b) withdrawing the partition wall (2) from the accommodating space (11), and applying pressure to the metal powder particles (3) and (4) to make it denser; (e) Sintering is performed to form metal powders (3) and (4), and the polymer material (1) is vaporized; (Ο cooling; (g) completion. When used in micro-precision injection molding, please refer to The third figure 1272182 is not controlled. Different parts of the mouth may require different mold wall conditions, such as gas permeability and flatness, which can be set on the surface of the mold (51) of the mold (5). The metal powder particles with a small diameter (4), (4) the outer material (10) with the same material (10) are made of the same material and the large metal powder particles (3) are read. After the mold (5) is sintered, the particle size = metal purity (4) and particle size can be large. The metal remainder (3) is combined into a body forming fixture, which has different particle diameters but the same material, and can be stably formed after sintering, and the surface of the mold cavity (51) of the mold (5) is a highly dense mold wall, and the mold wall has a small sugar content. The outer part of the mold (5) (ie, the non-mold part) does not need high density, and its _ degree is large, the metal powder of the large diameter (3) 妈 妈 妈 妈 妈 妈 妈 妈 妈 妈 妈 妈 妈 妈 妈 妈 妈 妈 妈 妈The part is formed by metal powder particles (3) with a large particle size, which can reduce the cost of the whole mold. 'Because the mold hole (5) of the mold (5) is different from the thickness of the metal (2) and (4) of the outer part (52), the gas permeability is also different. Different, so can be made into the quality of the product, the present invention can provide mold materials with different gas permeability = density, which is very economical; further, the invention 1 2 3: molding is not limited to ® cylinder, can be set to rely on Square money he ^ material [schematic description] ^, ° The first picture is the flow of the invention Fig. The second drawing is a schematic diagram of the process flow of the present invention. The third figure is a schematic view of the mold made of the present invention. [Explanation of main component symbols] (11) Housing space (3) Metal powder plate (5) Mold 1 South molecular material 2 Partition wall 3 (4) Metal powder 1272182 (51) Mold six (52) Exterior