TWI227176B - Manufacturing process of using microwave to heat for assist degreasing - Google Patents
Manufacturing process of using microwave to heat for assist degreasing Download PDFInfo
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1227176 五、發明說明（1) 【發明所屬之技術領域】 西r i t月係有關於一種以微波加熱輔助脫脂之製程，主 士 t力物末冶金製程中，其藉 對於脫脂之生胚進行加熱以快速脫脂，以減Ϊ 4: 除黏著劑、填充劑及淵滑劑等高分子材料及决逮去 【先前技術】 按目别在為末冶金製程中為了使金屬於太六且I ，生胚通常會添加高分子材斜你炎Λ、別、，屬叔末奋易成型 、界面活性劑、填充劑或潤滑劑:、金：：盘”黏結劑 混合後，可經模壓、锻造、•出、射出 生胚，再將生胚置入爐内脫脂。 工成尘 而金屬粉末射出成型具一般塑料射出 — 效率使用原料’大量的生產高複雜形狀之產品：尺寸= r, r; [;e： As；a!； ^ - 型編達，1%以上，缺陷容易在高分：：：== 現’因此脫脂為一相當重要之關鍵製程。 ^ 今，本發明暫不討論或評斷生胚成 材質或添加劑成分問題，特別僅針對一、粉末 問題提出另一製程方法。 、又的脫月曰處理製程 兩種方i現：ΐ為普遍的脫脂處理有溶劑脫脂與熱脫脂之 !2271761227176 V. Description of the invention (1) [Technical field to which the invention belongs] Xiritue is related to a process of microwave-assisted degreasing. In the metallurgical process of masters, it uses the heating of the degreased raw embryos to Quick degreasing to reduce Ϊ4: Remove polymer materials such as adhesives, fillers, and slip agents and remove them [prior art] In order to make the metal in Tailiu and I in the metallurgical process according to the purpose, raw embryos High-molecular materials are usually added to slant you, Λ, 、, 叔, 叔, easy-to-mold, surfactant, filler, or lubricant :, gold :: disk, and the adhesive can be mixed by molding, forging, and 1. Shoot the embryos and put them into the furnace for degreasing. The dust is produced and the metal powder is injected into the mold. General plastic injection — efficient use of raw materials' mass production of highly complex products: size = r, r; [; e : As; a !; ^-type designation, more than 1%, defects are easy to get high scores :: == Now 'so degreasing is a very important key process. ^ At present, the present invention does not discuss or judge the embryos Material or additive composition issues, especially only For a powder process issues another proposed method, and said de-month treatment process i now two ways:.! Ϊ́ universal degreasing and solvent degreasing of thermal debinding 227176
五、發明說明（2) 籌 取ΐ劑脫脂方法’主要步驟包括將試片浸入溶劑，萃 多貫穿外Η肉U 界 劑或潤滑’，形成許 脾& 〇Ι 卜°卩的連續開孔，便於後續利用加埶方法， 殘留的黏結劑以氣體或液體的形式，由孔道中逸出 ’ ^外，亦可將溶劑加壓成超臨界狀態〔s 1 成，但洛劑脫脂會有環保回收上的問題，並增加處 ，產2生氣：直；；經溶劑脫脂後將黏結劑移除 塑人體健廣ΐ二3 Γ 劑脫脂的環保、回收和影 此預熱時間、能量，加上持續：:曰：=進行脫脂’但 下來成本的浪費則相當的可觀，：；以；=長期 相當大的改進空間。 易產生缺陷，故仍存有 在現今這個注重環保的時、 收上，因③劑脫脂所使用的化學心既，源的使用及回 次數上的限制，又熱脫脂所使用6 衣保，且有使用 ，因此，開發出一種可以快速r 口 ：,又非常浪費能量 义犯知、減少能源 1227176 五、發明說明（3) 針對上述問題之改善，係已見於國内、外之專利公報 或相關的資料，例如中華民國公告第333482號「以射出成 型技術製作複雜形狀碳化鉻/氧化鋁陶瓷元件製程」之發 明專利案，但由該公告案中，卻可以看出脫脂步驟所衍生 出的*一些缺點’係有： 1 ·加熱爐升降溫緩慢，浪費時間：由室溫加熱至脫脂 所需溫度時間，以及完成脫脂後加熱爐降溫所需溫度時間 若能縮短，將可降低製造上的成本，而提高製程效率。 2 ·能量無法完全集中在生胚：一般加熱爐加熱時，多 數能量是經由爐體所吸收而消散於大氣中，實際上生胚所 需脫脂能量不到三成，為達脫脂目的而浪費如此多的能量 ，不符合經濟效益。 3 ·加熱爐佔空間，且欠缺機動性：加熱爐之爐體龐大 、重量重，不易搬動，一旦需要搬動時，則將是一大問題 〇 4·爐體a又備成本南·徒增支出負擔與維護費用，爐體 内若受到黏結劑分解物汙染時，加熱體和财火材料容易產 生問題。 5·化學溶劑有使用上時效之限制··若使用溶劑脫脂， 則化學溶劑使用一段時間或增加生胚量時，勢必降低其化 學萃取性，而失效後之化學溶劑的後續處理，也是一大 保問題。 6·傳統加熱的溫度分佈不均，缺陷易產生：以電阻式 發熱體加熱試片是以傳導和對流方式，將熱能由外而向内V. Description of the invention (2) Preparation of tincture degreasing method 'The main steps include immersing the test piece in a solvent, extracting more through the outer carcass U boundary agent or lubricating' to form a continuous opening of the spleen & 〇Ι Β ° 卩In order to facilitate the subsequent use of the method, the remaining adhesive escapes from the channel in the form of gas or liquid. In addition, the solvent can also be pressurized to a supercritical state [s 1%, but it will be environmentally friendly. Recycling problems, and increase the number of points, produce 2 angry: straight ;; after the solvent degreasing, remove the adhesive to shape the human body, health and health 2 3 Γ degreasing, environmental protection, recycling, and preheating time, energy, plus Sustaining :: Said: = to perform degreasing ', but the cost of waste is considerable,:; to; = long-term considerable improvement room. It is easy to produce defects, so it still exists in today's environmentally-conscious time. Because of the chemical heart used in ③ degreasing, the use of the source and the number of times of restrictions are limited, and thermal degreasing is used. 6 It is used, therefore, it has been developed a method that can quickly r mouth: but also waste energy energy, criminals know, reduce energy 1227176 V. Description of the invention (3) The improvement of the above problems has been seen in domestic and foreign patent bulletins or related Data, for example, the invention patent case of the Republic of China Announcement No. 333482 "Process of making complex shapes of chromium carbide / alumina ceramic components by injection molding technology", but from the announcement, it can be seen that the degreasing step is derived * Some of the disadvantages are: 1 · The heating furnace has a slow temperature rise and wastes time: heating from room temperature to the temperature required for degreasing, and shortening the temperature required for the furnace to cool down after degreasing can reduce manufacturing costs And improve process efficiency. 2 · Energy cannot be completely concentrated in raw embryos: When heating in a general heating furnace, most of the energy is absorbed by the furnace body and dissipated in the atmosphere. Actually, less than 30% of the degreasing energy required for raw embryos is wasted, so much is wasted for degreasing purposes. The energy is not economical. 3 · The heating furnace takes up space and lacks maneuverability: the furnace body of the heating furnace is huge, heavy and difficult to move. Once it needs to be moved, it will be a big problem. Increase the expenditure burden and maintenance costs. If the furnace body is contaminated by the decomposition products of the adhesive, the heating body and the fire and fire materials are prone to problems. 5. The use of chemical solvents has a limitation on aging. If the solvent is used for degreasing, the chemical solvent will be degraded when it is used for a period of time or the amount of raw embryos is increased. The subsequent treatment of the chemical solvent after the failure is also a major problem. Security issues. 6. The temperature distribution of traditional heating is uneven, and defects are easy to occur: heating the test piece with a resistive heating element is conducted and convective, and the thermal energy is from the outside to the inside
第7頁 I227176 、---— 一 五、發明說明（4) " " -- $導至試片，除了爐體内溫度不易分佈均句，試、θ =:均’缺陷則易因而伴隨著熱脫脂製程產生，而可能發 2裂：變形、泡腫和崩塌等缺陷，冑波如果同時加熱‘ 的彳政波吸收體，如高分子材料和金屬粉末等，試片内 卜均溫，將可大幅減少缺陷產生。 此外’另有中華民國公告第1 67 524號專利案，其所提 ，以微波加熱熱處理不穩定陶瓷之方法，主要係將微波技 :f用於陶莞之燒結過程’在該案中係以適量之粉末底床 /^ 一微波感受器，該粉末底床必須依需要而具備加熱、 ，j、除氧及熱傳導等特性，該等特性，皆係針對陶瓷之 &、、、°」過私所需而設，然而，對於燒結過程前之陶瓷生 胚=「脫脂」製程，該案則完全未予探討，因此，前述之 脫脂處理製造〔溶劑脫脂、熱脫脂〕等諸問題，該公告第 1 67524號專利案並未能予以解決。 【發明内容】 人本發明係有鑑於習用脫脂方法，溶劑處理相當麻煩、 a乎、、、二濟效盈及環保要求，而熱脫脂的加熱爐則是浪費 升IV二日守間等缺失，而提出的一種改良製程，旨在改善習 用脫月曰没備成本高、無機動性及能量無法完全集中等弊端 〇 /本發明係有關於一種以微波加熱輔助脫脂之製程，主 ，係應用於粉末冶金製程中，其藉適當的微波功率和作用 日守間對待脫脂之生胚進行加熱以快速脫脂。 本I明之主要目的，乃是在提供一種可以加快製造流Page 7 I227176, ----- One, five, description of the invention (4) " "-$ lead to the test piece, in addition to the furnace body temperature is not easy to distribute uniform sentence, test, θ =: all 'defects are easy to cause With the thermal degreasing process, two cracks may occur: defects such as deformation, edema, and collapse. If the wave is heated at the same time, the temperature absorption of the wave absorber, such as polymer materials and metal powder, will be uniform. Will greatly reduce the occurrence of defects. In addition, 'there is another patent case of the Republic of China Announcement No. 1 67 524, which mentions that the method of heat-treating unstable ceramics by microwave heating is mainly using microwave technology: f for the sintering process of Taowan'. In this case, an appropriate amount of Powder bed / ^ A microwave susceptor, the powder bed must have the characteristics of heating, heating, deoxidation, and heat conduction, etc., as required. These properties are all for private use of ceramics & ,,, °. However, for the ceramic green embryo before the sintering process = "degreasing" process, this case has not been discussed at all. Therefore, the aforementioned degreasing treatment manufacturing [solvent degreasing, thermal degreasing] and other issues, the bulletin No. 1 67524 The patent case has not been resolved. [Summary of the invention] The present invention is in view of the conventional degreasing method, the solvent treatment is quite troublesome, and the benefits of environmental protection and environmental protection requirements, while the heating degreasing furnace is a waste of IV, two days, and so on. An improved manufacturing process is proposed to improve the disadvantages of conventional equipment such as high cost, lack of mobility, and inability to fully concentrate energy. The present invention relates to a process for assisting degreasing by microwave heating. In the powder metallurgy process, it uses the appropriate microwave power and action to heat the degreased raw embryos for rapid degreasing. The main purpose of this document is to provide a way to speed up the manufacturing process.
1227176 五、發明說明（5) 程、節省成 劑、填充劑 填充劑或潤 以避免升降 Ο 本發明 之製程設備 波吸收介質 製程設備和 成本低、機 成本支出負 其特徵 置於微波環 行脫脂者。 【實施方式 粉末冶 脂、C ·燒結 輔助脫脂之 驟為： a·生胚 = 90:6:4 酸乙烯基共 12:61:15 練後經射出1227176 V. Description of the invention (5) Process, saving agents, fillers, fillers, or lubricants to avoid lifting. The process equipment of the present invention, the wave absorbing medium process equipment and the low cost, the machine cost is negative. Its characteristics are placed in the microwave degreasing. By. [Implementation The powder smelting, C · sintering assisted degreasing steps are: a · raw embryo = 90: 6: 4 acid vinyl total 12:61:15 injection after training
本、減少 或潤滑劑 滑劑等混 溫所浪費 之另 目 缺陷產 之目的 練後之 的能量 的，乃 以提两 免環境 而達到 機動性 人貝搬 該生胚 整微波 ，並、_ ί達到乾燥及去除黏結 成型^ 5金屬粉末與黏結劑、 及設備笨重所面臨的各種問： ί在提供一種節省升降溫時間 =私/文率，並可重複使用的微 及長1供一種能量集中之 :省能」的目標，而具有設備 兩之製程設備和方法，以降低 動、移動之優點。 進入脫脂程序時，係將生胚放 功率與設定微波作用時間以進 和方法， ’ ·達到避 方法，進 體輕便、 擔及方便 係在於·· 境中，調 ] 金之流程如第一圖所示，其包括a.生胚、b.脫 、d•成品等步驟，本發明即係一種以微波加熱 製程’本發明應用於粉末冶金之流程時，其步 •將金屬粉末以鐵粉：鎳粉：銅粉重量百分比 ’再與黏結劑以低密度聚乙烯（LDPE):乙烯醋 聚物（EVA):石油臘（PW):硬脂酸（SA) =12 : 的重量百分比，預混練溫度在1 2 0〜1 6 0 °C，混 成型方式製成生胚（1)。上述之金屬粉末亦可The energy of training, reduction, or lubricant and lubricant mixing and other wasteful purposes of wasted energy is used to improve the environment and to achieve mobility and mobility, and _ ί ί Achieve drying and removal of cohesive molding ^ 5 metal powders and adhesives, and various problems faced by the heavy equipment: ί in providing a saving of heating time = private / text rate, and reusable micro and long 1 for an energy concentration ": Energy saving" goal, and has the equipment and two process equipment and methods to reduce the advantages of movement and movement. When entering the degreasing program, the power of the raw embryo and the setting of the microwave action time are used to synthesize the method. “The method of avoiding, the lightness, convenience and convenience of the body lies in the environment. The flow of gold is as shown in the first figure. As shown, it includes a. Raw embryo, b. Stripping, d. Finished product, etc. The present invention is a microwave heating process. When the present invention is applied to the powder metallurgy process, the steps are: • metal powder to iron powder: Nickel powder: Copper powder weight percentage 'and then binder with low density polyethylene (LDPE): ethylene vinegar polymer (EVA): petroleum wax (PW): stearic acid (SA) = 12: weight percentage, pre-kneaded The temperature is between 120 ° and 160 ° C, and the raw embryo (1) is made by mixing molding. The above metal powders are also available
第9頁 1227176 五、發明說明（6) » 為鐵（Fe)、鈦（Ti)、銅（Cu)、鋁（A1)、鎂（Mg)、鎳（Ni)、 絡（Cr)、猛（Μη)之純金屬或其合金。 b·脫脂：將待脫脂之生胚（丨）置入載具（3)内，並連同 於載具（3)直接進行脫脂；或者，將生胚（〇另予外覆氧化 結（ZrO)之粉體床（2)後，再予以加熱脫脂，粉體床的（2) 功能為提供維持生胚（1 )形狀和避免生胚（丨）間接觸（當生 胚（1)為數個時），上述之粉體床（2 )之粉末可為氧化鋁 (A 1 2 0 3 )或氧化矽（s i 〇 2 )或氧化錯（z r 〇)之任意比例集合。 c ·燒結：將脫脂後之半成品（6 )放置於燒結爐（5 )Page 9 1227176 V. Description of the invention (6) »For iron (Fe), titanium (Ti), copper (Cu), aluminum (A1), magnesium (Mg), nickel (Ni), complex (Cr), fierce ( Mη) pure metals or alloys thereof. b. Degreasing: Place the raw embryo (丨) to be degreased into the carrier (3), and directly degrease it together with the carrier (3); or, place the raw embryo (0 and cover it with oxidized junction (ZrO)) After the powder bed (2) is heated and degreased, the function of the powder bed (2) is to provide maintenance of the shape of the embryo (1) and avoid contact between the embryo (丨) (when there are several embryos (1)) ), The powder of the above powder bed (2) may be alumina (A 1 2 0 3) or silicon oxide (si 〇 2) or oxide (zr 〇) in any ratio set. C · sintering: after degreasing The semi-finished product (6) is placed in the sintering furnace (5)
内，將δ亥脫月曰後之半成品（6 )予以燒結。 d·成品：按一般程序降溫，即可形成一成品（7 )，而 可將其取出。 本發明之特徵係在於〔請配合第二圖〕：上述生胚 (1)進入脫脂程序時，係在微波環境中本實施例為微波爐 (4))利用微波加熱進行脫脂，其中，微波作用時間可設 定為10分鐘〜15小時，微波功率為30〜2000W之間，在脫脂 過程中，可以透過視窗（41)直接觀察，以便於掌控脫脂結Then, the semi-finished product (6) after the δHelt month is sintered. d. Finished product: According to the general procedure, the finished product (7) can be formed by cooling down, and it can be taken out. The feature of the present invention is that [please cooperate with the second figure]: when the above-mentioned raw embryo (1) enters the degreasing program, it is in a microwave environment. This embodiment is a microwave oven (4). The microwave is used for degreasing. Among them, the microwave action time It can be set to 10 minutes to 15 hours, and the microwave power is between 30 to 2000W. During the degreasing process, you can directly observe through the window (41) to control the degreasing structure.
果；而有關生胚（1 )置入微波環境之方式，可為下列任一 種： 1 ·生胚（1 )直接裸置於微波環境中； 2. ^胚（1)置放於載具（3)中，復將之共同置於微波環 境中〔本實施例之載具（3 )係為坩堝〕； 3. 生胚（1)置放於载具（3)中，生胚（1)之全部或部份 埋入在粉體床（2)之粉末裡，復共同置於微波環境The method of placing the raw embryo (1) into the microwave environment can be any of the following: 1 · The raw embryo (1) is directly placed in a microwave environment; 2. The embryo (1) is placed on a carrier ( 3), put it together in a microwave environment [the carrier (3) of this embodiment is a crucible]; 3. The green embryo (1) is placed in the carrier (3), and the green embryo (1) All or part of the powder is buried in the powder of the powder bed (2), and then put together in a microwave environment.
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1227176 五、發明說明1227176 V. Description of the invention
中〔構成粕體床（2 )之粉末，係一種可吸收微波之 介質〕； h配〇弟三圖，經過脫脂後，半成品（6)亦可以 在微波環境中續加熱至燒結溫度，之後再放入已達到燒結 μ度之燒詰爐（5 )爐體中進行燒結以獲得成品（7 ); ， 將半成品（6)留置在微波環境〔微波爐（4)〕中，直 Μ波燒結而獲得成品⑺。如此，則可以省去漸進加溫的 時間與能源。 ^本發明與習用技術加熱至燒結溫度之耗費時間效率比 較即如第，圖，圖表資料所示，在燒結溫度分別為以1 2 〇 〇 C與1 2 5 0 °C做试驗，而燒結時間為2小時之條件下，比較 本發明與習知技術燒結後之相對密度時，顯示本案所獲之 製成品，其燒結密度甚佳，又，其製作流程中之脫脂程序 所花費時間之差異可參閱第五圖所示，本發明之脫脂時間 僅為習知技術的一半，可有效節省製造時間。 藉由本發明之以微波加熱輔助脫脂之技術，可有效改 良習用脫t旨之方法所存在之爐體升降溫緩慢、製程時間矣 、加熱能量1集中、不符經濟效益、爐體佔空間、機動性 差、>谷劑效犯不佳與有害環保等缺失。利用本發明之製造 方法，可達成「種可以加快製造流程、減少缺陷產生、節 省成本、快j達到去除黏著劑、填充劑或潤滑劑之功效， 極適合金屬粉末與黏結劑、填充劑或潤滑劑混練後之成型 生胚的脫脂夕驟。 前述之高分子材料係為黏結劑、填充劑或潤滑劑等Medium [The powder constituting the meal bed (2) is a medium capable of absorbing microwaves]; h with the third figure, after degreasing, the semi-finished product (6) can also be continuously heated to the sintering temperature in a microwave environment, and then Put it into the furnace body (5) which has reached the sintering μ degree and sinter to obtain the finished product (7); leave the semi-finished product (6) in a microwave environment [microwave oven (4)] and sinter by direct wave Finished product. In this way, time and energy for gradual heating can be saved. ^ The time efficiency comparison between the present invention and the conventional technology for heating to the sintering temperature is as shown in the figure, the graph and the graph. The sintering temperature is tested at 12,000 ° C and 1250 ° C, and the sintering is performed. When the relative density after sintering of the present invention and the conventional technology is compared under the condition of 2 hours, it shows that the finished product obtained in this case has a very good sintering density, and the difference in the time spent in the degreasing process in the manufacturing process As shown in the fifth figure, the degreasing time of the present invention is only half of the conventional technology, which can effectively save the manufacturing time. The microwave heating assisted degreasing technology of the present invention can effectively improve the slow temperature rise and fall of the furnace body, the processing time is short, the heating energy is concentrated, it is not economical, the furnace takes up space, and the mobility is poor. , ≫ Deficiency of cereals and lack of harmful environmental protection. By using the manufacturing method of the present invention, it is possible to achieve "a kind of method that can speed up the manufacturing process, reduce the occurrence of defects, save costs, quickly reach the effect of removing adhesives, fillers or lubricants, and is very suitable for metal powders and adhesives, fillers or lubricants. The degreasing step of the shaped raw embryo after the mixing of the agent. The aforementioned polymer materials are binders, fillers, lubricants, etc.
第11頁 1227176 五、發明說明（8) 其成分可為壓克力（acrylic)、乙基纖維素（ethyl cellulose)、羥丙基纖維素（hydroxypropyl cellulose )、聚丙烯（polypropylene)、聚縮醛（polyacetal polymer )、乙烯乙酸乙烯酯共聚合物（e t hy 1 e ne v i n y 1 acetate )、非晶質聚丙烯(atactic polypropylene )、橡膠（styrene-butadienecoplymer)、甲基纖維素 (methylcellulose )、聚乙烯（polyethylene )、氧化偶 合聚乙烯（oxidized polyethylene)、乙酸纖維素 (cellulose acetate)、尼龍（nylon)、聚苯乙烯 (polystyrenes)、聚丁烯（polybutylene)、聚石風 (polysulfone)、石油蝶（paraffin wax)、礦物油 (mineral oil)、植物油（vegetable oil )、月旨肪酸 (fatty acid)、脂肪族醇（fatty alcohols)、脂肪酯 (fatty ester)、碳氫化合蠟（hydr〇carb〇I1 wax)、環 氧化合物（epoxy)、聚氧化苯（p〇lyphenylene)、酚 (phenol)、硬脂酸（stearicacid)、酯蠟（ester wax )、油酸（oleicacid )、苯二甲酸乙酯（diethyl . phthalate )、曱醛（formaldehyde )之任意一種。 綜上所述，本發明已具有產業上之利用%生與進步性， 且本發明未見於任何刊物公開，亦具有新穎性，當符合發 明專利之申请要件，番依法描φ欢n口由 ^ ^ ^ ^ ^ ^ 友依法徒出發明專利申請，懇請貴 審查委貝心、准專利為禱。 唯以f : Ϊ ’僅為本發明之-較佳實施例而已，當 不能以此限定本發明膏絲夕鉻阁 伽 田 Θ^之耗圍，舉凡依本發明申請專Page 11 1227176 V. Description of the invention (8) Its composition may be acrylic, ethyl cellulose, hydroxypropyl cellulose, polypropylene, polyacetal (Polyacetal polymer), ethylene vinyl acetate copolymer (et hy 1 e ne viny 1 acetate), amorphous polypropylene (atactic polypropylene), rubber (styrene-butadienecoplymer), methyl cellulose (methylcellulose), polyethylene (Polyethylene), oxidized polyethylene, cellulose acetate, nylon, polystyrenes, polybutylene, polysulfone, petroleum butterfly ( paraffin wax, mineral oil, vegetable oil, fatty acid, fatty alcohols, fatty esters, hydrocarbon wax I1 wax), epoxy, polyphenylene, phenol, stearic acid, ester wax, oleicacid Any one of diethyl, phthalate, and formaldehyde. In summary, the present invention has industrial utilization and progress, and the present invention has not been disclosed in any publications, and it is also novel. When it meets the application requirements of the invention patent, Fan describes the law by n ^ ^ ^ ^ ^ You have made an application for an invention patent in accordance with the law. We urge you to examine the patent and quasi-patent for prayer. Only f: Ϊ ′ is only the preferred embodiment of the present invention. When this cannot be used to limit the consumption range of the invention, it is necessary to apply for a special application according to the present invention.
第12頁 1227176 五、發明說明（9) 利範圍所作之均等變化與修飾，皆應屬本發明專利所涵蓋 之範圍内。Page 12 1227176 V. Description of the invention (9) Equal changes and modifications made within the scope of the invention shall all fall within the scope of the invention patent.
第13頁 1227176 圖式簡單說明 第一圖：係為粉末冶金之製造流程圖。 第二圖：係為本發明之脫脂流程示意圖。 第三圖：係為本發明之燒結流程示意圖。 第四圖：係為本發明與習用技術在燒結後之成品密度比較 表。 第五圖：係為本發明與習用技術間脫脂過程之時間比較圖 【圖式符號說明】 (1) 生胚 (2) 粉體床 (3) 載具 (4) 微波爐 (41) 視窗 (5 ) 燒結爐 (6) 半成品 (7) 成品Page 13 1227176 Schematic illustration of the first picture: It is a manufacturing flow chart of powder metallurgy. The second figure is a schematic diagram of the degreasing process of the present invention. The third figure is a schematic diagram of the sintering process of the present invention. Figure 4: This is a comparison table of the density of the finished product after sintering according to the present invention and the conventional technology. Fifth picture: It is a time comparison chart of the degreasing process between the present invention and the conventional technology. [Illustration of the symbols] (1) Green embryo (2) Powder bed (3) Carrier (4) Microwave oven (41) Window (5) ) Sintering furnace (6) Semi-finished product (7) Finished product
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| TW92109948A TWI227176B (en) | 2003-04-29 | 2003-04-29 | Manufacturing process of using microwave to heat for assist degreasing |
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| TW92109948A TWI227176B (en) | 2003-04-29 | 2003-04-29 | Manufacturing process of using microwave to heat for assist degreasing |
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