A7 A7 經濟部智慧財產局員工消費合作社印製 五、發明說明（/ j 之背景： 本發明係有關壓鑄用鋁合金，特別是關於一種壓鑄極 薄:件用之鋁合金。 近年來3 C產業發展迅速，對如筆記型電腦、數値相 機及通訊手機等之機殼，要求輕、薄及防電磁輻射之特性 乃廣泛使用鎂合金及鋁合金高壓壓鑄成型件。而且這兩年 來的趨勢是大量走向鎂合金，因其相同厚度之鑄件比鋁合 金者要輕約30%。另一因素是現有世界各國鋁合金成份之 流動性均較有限，即使在高壓壓鑄下亦難做到以下諸 如筆記型電腦之機殼鑄件。 目前鎂合金雖是這方面應用的主流，但使用鎂合金有 以下諸多缺點及代價： 1·鎂:合金原料價格每公斤將近是銘合金的兩倍。 2·鎂合金鑄件料頭等廢料（約為成品重量1.5_2倍）由 於雜質（如鐵、鎳、銅、矽）含量的提高及氧化物增加很 難在廠内回收再熔使用，而是以賤價賣回給原廠處理，因 此鎂合金由進料到成品件重量比例極低，約35 %〜4〇%左 右，形成極大的資源及能源浪費。反觀鋁合金廢料嚴内再 生使用幾乎達到10 0 % ’因此相對原料成本銘合金縳件要 比鎂合金鑄件減少40%〜60 %。 3.鎂合金比鋁合金對空氣氧反應（氧化）更活潑，其 湯液形成的氧化物極易造成鑄件夾渣缺陷，因此一般鐵人 金壓鑄鑄件不良率往往要比鋁合金者高一倍以上。 基於以上因素要降低3 C機殼壓鑄鑄件成本乃需大 I-------^ .1 I---I-- (請先閲讀背面之注意事項再填寫本頁) 五^發明說明（丄） 讀用銘合金。但如前述現有世界各國銘合金之流動性均 較有限，很難做到1 mm以下薄件。 ‘主發明之概沭 、本發明75 #開發出特殊鋁合金成份，克服這方面困 難:知用本發明合金，配合適當銘湯處理及壓鱗機台設備 人操作將可在问良品率下生產0·6〜0·9咖壁厚之鱗件。這 將，目前市面上採用熱室壓轉法錢合金缚件ι〇〜ΐ2_ ，厚要薄25〜30%，因而彌補鋁合金比鎂合金密度高約45 =的，點。根據估計本發明用於3 c機殼·件將可比錢合 至者即名成本15〜25%左右，其間也包括對能源電力的節 省1 5 %以上。 本發明之壓鑄極薄件用之銘合金，其主成份大致包括 ⑷銘，其重量百分比為77·5_85 5〇/〇 ;(b)石夕，其重量百分比 為1〇·〇-15·0% ;(c)錳，其重量百分比為〇6丄4%，· 鎂：其重量百分比為0-0.5% ;⑷銅，其重量百分比為〇_4 〇 % ;以及(e)雜質，其重量百分比為0-1.0%。 其中，較佳的，含鎂重量百分比為0.25-0.50%。另外， 較佳的，含銅重量百分比為3 0_4 0%。 本發明雖是針對3 C機殼需求而開發，但同樣可應用 於一般鋁合金壓鑄件上，因此一個鋁壓鑄廠將可能採用單 一合金生產各式鑄件。 主發明之具體實施例盏昍 A7 ---— —__B7____ 五、發明說明（>) 目前世界現有高壓壓鑄用鋁合金較常用者及其成份和 基本機械性能如下表· 合金 代號 矽 鐵 鐵 銅 鋅 其他 鋁 抗張 強度 (ksi) 降伏 強度 (ksi) —-----—| 伸長率 (%)標距 長 C/Λ A360 9.0- 10.0 <1.5 0.4- 0.6 一 <0.6 一 — balance 46 24 50mm 5.0 364 8.0- 9.0 <1.5 0.2- 0.4 一 <0.2 <0.15 0.35Cr 0.03Be balance 43 23 7.5 A380 8.0- 9.0 <1.3 <0.1 一 3.0-4.0 <3.0 0.35Cr 0.03Be balance 47 23 4.0 383 10.0- 11.0 <0.13 <0.1 - 2.0-3.0 <3.0 — balance 43 21 8.0 A384 10.5- 12 <0.13 <0.1 — 3.2-4.2 <3.0 - balance 47 23 4.0 365 9.5- 11.5 <0.15 0.1- 0.6 0.40- 0.60 一 一 — balance 34 18 15* 鎂+金 AZ91D <0.01 0.005 balanc e 0.15- 0.50 <0.03 0.35- 1.0 一. 8.3-9.7 34 23 3.0 附註：以上表列及本文均使用重量百分比（wt . % )， 空白未註明者一般代表<〇」％雜質含量。 附註：該等合金代號（A360至AZ91D)之合金係為 習知之合金，為此項技藝人是所熟知，於此不再——贅述。 *係在眞空壓鑄下並作T6熱處理的機械性質。 本發明特色在使用相當南之碎含量以增加流動性，特 適鑄薄件；同時使用相當高含量之錳以防止黏模現象（即 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閲讀背面之注意Ϋ項再填寫本頁) 裝 —^丨訂·，-------- 經濟部智慧財產局員工消費合作社印製 483938 經濟部智慧財產局員工消費合作社印製 A7 五、*發明說明（+ ) 麵^部銲接*具上）。傳統上壓鑄用銘合金大都採用高 $含量（0.5〜l.5wt·% )以防止黏模現象，但含鐵量高將 ^，·害伸長率及耐衝擊性、耐疲勞性等機械性能◦本發明用 取代鐵將不會有這方面缺點。同時短還能提供固溶強化 的作用。 /小、加0.6-1.2\¥1:.%4孟於壓铸銘合金是本發明最大特 色。縱觀美國、日本、歐洲有關鋁_矽_鎂及鋁·矽-銅合金專 利均未發現有類似之添加者。以最接近的美國八“瓜丨仙㈤ Association出版的365合金（原系德國鋁公司 在歐洲申請的專利^68774^ )亦僅含〇4_〇6糾％錳。 故本發明不會與現有世界鋁合金專利有所衝突。 本發明合金除包含HM4%矽外，可使用添加〇25_ 〇.50wt·%鎂以達到或超過其他壓鑄鋁合金性能，亦可添加 3.〇-4.〇wt·%銅達到相同目妁。前者優點在於其伸長率及耐 衝擊性較佳。後者相對於前者優點在於其共晶點較低（後 者約477。(：；前者約5551)，可使用較低壓鑄湯液溫度， 減低能耗，但缺點在其抗蝕性稍差。不過在許多應用上， 這項缺點並不是顧慮。 習知鋁-矽合金類的鑄造合金，可添加至多〇25糾％鈦 及至多0.05wt%鳃以使鑄件微觀組織能再進一步的細化而 有助於機械性質的提升’所以本發明合金在必要需求下亦 可添加此兩元素加以改善。 本發明合金，其中該雜質允許含有鐵重量百分比為 0-0.5%，鈥重量百分比為〇-〇·25%，鋅重量百分比〇一 ---— — — — — — — — — — — ——I— ^ ·11111111 — — — — — —I! (請先閲讀背面之注意事項再填寫本頁)A7 A7 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. 5. Description of the invention (/ j Background: The present invention relates to aluminum alloys for die-casting, especially to an aluminum alloy for ultra-thin die-casting. In recent years, the 3 C industry The development is rapid. For the housings of notebook computers, digital cameras, and communication mobile phones, which require lightness, thinness, and electromagnetic radiation resistance, magnesium alloy and aluminum alloy high-pressure die-casting parts are widely used. And the trend in the past two years is A large number of magnesium alloys are used, because the castings of the same thickness are about 30% lighter than those of aluminum alloys. Another factor is that the fluidity of aluminum alloy components in existing countries around the world is relatively limited, and it is difficult to achieve the following such as notes even under high pressure die casting The casing casting of the model computer. Although magnesium alloy is the mainstream in this application, the use of magnesium alloy has the following disadvantages and costs: 1. Magnesium: the price of alloy raw materials is nearly twice that of Ming alloy per kilogram. 2. Magnesium alloy Waste materials such as castings (about 1.5_2 times the weight of the finished product) are difficult to recycle in the factory due to the increase in impurities (such as iron, nickel, copper, silicon) and oxides. It is used, but sold back to the original factory for processing at a low price. Therefore, the weight ratio of the magnesium alloy from the feed to the finished product is extremely low, about 35% to 40%, which results in a great waste of resources and energy. In contrast, aluminum alloy waste is strict. The internal regeneration use is almost 100% 'so the relative raw material cost is less than 40% ~ 60% compared to magnesium alloy castings. 3. Magnesium alloys are more reactive to oxygen (oxidation) in air than aluminum alloys, and their soups form The oxides can easily cause slag inclusion defects in castings, so the defect rate of general iron man gold die castings is often more than double that of aluminum alloys. Based on the above factors, it is necessary to reduce the cost of 3 C casing die castings. --- ^ .1 I --- I-- (Please read the precautions on the back before filling out this page) 5 ^ Invention Note (丄) Read Ming alloy. But as mentioned above, the fluidity of Ming alloy in the world It is relatively limited, and it is difficult to achieve thin pieces below 1 mm. 'The main invention of the invention, this invention 75 # developed a special aluminum alloy composition to overcome this difficulty: know the use of the alloy of the invention, with appropriate soup treatment and squeezing Machine equipment operators will be able to ask for yield We will produce scales with a wall thickness of 0 · 6 ~ 0 · 9. This will currently use a hot-chamber pressure transfer method of alloy alloy bindings ι〇 ~ ΐ2_, which are 25 ~ 30% thinner, so they make up for the aluminum alloy ratio. The density of the magnesium alloy is about 45 = high, according to the estimation. According to the present invention, the comparable cost for a 3 c case and parts is 15 to 25%, which also includes a saving of more than 15% on energy and electricity. The main component of the Ming alloy for die-casting ultra-thin parts of the present invention, the main component of which is roughly composed of Ming, its weight percentage is 77 · 5_85 5〇 / 〇; (b) Shi Xi, its weight percentage is 10 · 0-15 · 0%; (c) manganese, whose weight percentage is 06.4%, magnesium: its weight percentage is 0-0.5%, ytterbium copper, whose weight percentage is 0-4.0%, and (e) impurities, which The weight percentage is 0-1.0%. Among them, preferably, the weight percentage of magnesium is 0.25-0.50%. In addition, preferably, the copper-containing weight percentage is 30 to 40%. Although the present invention was developed to meet the requirements of the 3 C chassis, it can also be applied to general aluminum alloy die castings. Therefore, an aluminum die casting plant may use a single alloy to produce various types of castings. Specific examples of the main invention A7 ----- --__ B7____ 5. Description of the invention (>) At present, the most commonly used aluminum alloys for high-pressure die casting in the world, their components and basic mechanical properties are shown in the following table. Zinc and other aluminum Tensile strength (ksi) Falling strength (ksi) —-----— | Elongation (%) Gage length C / Λ A360 9.0- 10.0 < 1.5 0.4- 0.6 one < 0.6 one- balance 46 24 50mm 5.0 364 8.0- 9.0 < 1.5 0.2- 0.4 one < 0.2 < 0.15 0.35Cr 0.03Be balance 43 23 7.5 A380 8.0- 9.0 < 1.3 < 0.1 one 3.0-4.0 < 3.0 0.35Cr 0.03Be balance 47 23 4.0 383 10.0- 11.0 < 0.13 < 0.1-2.0-3.0 < 3.0 — balance 43 21 8.0 A384 10.5- 12 < 0.13 < 0.1 — 3.2-4.2 < 3.0-balance 47 23 4.0 365 9.5 -11.5 < 0.15 0.1- 0.6 0.40- 0.60-one-balance 34 18 15 * magnesium + gold AZ91D < 0.01 0.005 balanc e 0.15- 0.50 < 0.03 0.35- 1.0 I. 8.3-9.7 34 23 3.0 Note: The above table The weight percentages (wt.%) Are used in this column and in this article. Those not indicated in the blank generally represent < 〇 "% impurity content. Note: The alloys of these alloy codes (A360 to AZ91D) are well-known alloys, which are well known to those skilled in the art, and will not be repeated here. * Mechanical properties of T6 heat treatment under vacuum die casting. The present invention is characterized by using a relatively small amount of crushed content to increase fluidity, and is suitable for casting thin parts; at the same time, a relatively high content of manganese is used to prevent mold sticking (that is, this paper size applies Chinese National Standard (CNS) A4 specification (210 X 297 mm) (Please read the note on the back before filling out this page) Pack — ^ 丨 Order ·, -------- Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economy 483938 Employees of the Intellectual Property Bureau of the Ministry of Economic Affairs Printed by the Consumer Cooperatives A7 V. * Invention description (+) Surface welding (*). Traditionally, most Ming alloys for die casting use high $ content (0.5 ~ 1.5wt ·%) to prevent sticking, but high iron content will damage mechanical properties such as elongation and impact resistance and fatigue resistance. The substitution of iron according to the invention will not have this disadvantage. At the same time, it also provides a solid solution strengthening effect. / Small, plus 0.6-1.2 \ ¥ 1:.% 4Meng Yu die-casting alloy is the biggest feature of the present invention. Throughout the United States, Japan, and Europe, patents related to aluminum_silicon_magnesium and aluminum-silicon-copper alloys have not found similar additions. The closest 365 alloy (the original patent filed by Deutsche Aluminium in Europe ^ 68774 ^) published by the closest American eight "Melon 丨 Sinhala Association" also contains only 〇4_〇6% manganese. Therefore, the present invention will not be compared with the existing There are conflicts in world aluminum alloy patents. In addition to HM4% silicon, the alloy of the present invention can use the addition of 0.25_0.50wt ·% magnesium to achieve or exceed the performance of other die-cast aluminum alloys, and 3.00-4.〇wt can also be added. ·% Copper achieves the same purpose. The former has the advantages of better elongation and impact resistance. The latter has the advantage over the former in that the eutectic point is lower (the latter is about 477. (:; the former is about 5551), which can be used lower The temperature of the die-casting soup reduces energy consumption, but its disadvantage is slightly worse in corrosion resistance. However, in many applications, this disadvantage is not a concern. It is known that aluminum-silicon alloy casting alloys can be added up to 25%. Titanium and at most 0.05wt% gills can further refine the microstructure of the casting and contribute to the improvement of mechanical properties', so the alloy of the present invention can also be improved by adding these two elements if necessary. The alloy of the present invention, where the Impurities are allowed to contain iron by weight The fraction is 0-0.5%, the weight percentage is 0-0.25%, the weight percentage of zinc is one ---- — — — — — — — — — — — — — 11111111 — — — — — —I! (Please read the notes on the back before filling this page)
A7 五、發明說明（_ , 1·〇%，鳃重量音分比為0 — 0.05%及其他未説明之雜質元素 每個皆小於O.lwt.%。 為使本發明之技術思想具體化，乃以實驗加以證明， 以下兩實施例即説明此一技術思想是正確的。 實施例一： 依下列成份範圍，以純鋁、純矽、純鎂及鋁_錳母合金在 電熱之坩堝爐中熔解，除氣除渣後以壓鑄機壓鑄成厚度為 〇.8mm、面積為200x3 00mm之鑄片，經切片分割成2〇片 2〇mmxl5〇mm之矩形，再車削成片狀拉伸試片2〇支，每支 試片皆具有寬度12.5mm長50mm之標距（gage)，所得機 械性質平均値如表中所示。 矽 鐵 鎂 錳 銅 鋅 鋁 抗張 強度 (ksi) 降伏 強度 (ksi) 伸長率 (%)標距 長 50mm 10-14 <0.5 0.25-0.50 0.6-1.4 <0.2 <1.0 balance 46 25 6.5 狂：使用重量百分比（wt·% ) 實施例 依下列成份範圍，以純鋁、純矽、純銅及鋁-錳母合金在 電熱之坩堝爐中熔解，除氣除渣後以壓鑄機壓鑄成厚度 〇.8mm、面積為200x300mm之鑄片，經切片分割成2〇片 2〇mmxl5〇mm之矩形，再車削成片狀拉伸試片2〇支，每支 (锖先閱讀背面之注意事項再填窝本頁) · mmme ϋ I I 1«^eJ· ϋ n A— 拳 經 濟 部 智 慧 財 產 局 員 工 消 費 合 作 社 印 製 A7 五、發明說明（k ) 忒片皆具有寬度12.5mm長50mm之標距（gage)，所得機械 性質平均値如表中所示。 矽 鐵 鎂 錳 鋼 鋅 鋁 抗張強 度(ksi) 降伏強 度(ksi) 伸長率 (%)標距 10-14 <0.5 <0.2 0.6-1.4 3.0-4.0 <1.0 balance 45 24 Tv jumm 5.0 註：使用重量百分比（wt· % ) 由以上兩個實施例合金即可知本發明合金不但能獲得 大面積肉薄的鑄件，同時可獲得優秀的機械性質，兩者均 較目前使用的AZ91D鎂合金之抗張強度、降伏強度及伸長 率為佳。 综上所述，可知本發明之『壓鑄極薄件用之鋁合金』 不但具有新穎性、進步性，而且可供產業利用性，與發明 要件相符。惟，以上所述者，僅為本發明之實施例而已，凡 依據本發明之各種修飾與變化，仍應包含於本申請專利之 範圍内。 ---------Μ-------J_tri-------- (請先閲讀背面之注意事項再填寫本頁} 經濟部智慧財產局員工消費合作社印製 8A7 V. Description of the invention (_, 1.0%, gill weight cent ratio is 0-0.05% and other unspecified impurity elements are each less than 0.1 wt.%. In order to make the technical idea of the present invention concrete, It is proved by experiments that the following two examples show that this technical idea is correct. Example 1: According to the following composition range, pure aluminum, pure silicon, pure magnesium and aluminum-manganese master alloy are melted in an electric heating crucible furnace After degassing and slag removal, a die-casting machine is used to die-cast a slab with a thickness of 0.8mm and an area of 200x300mm. After slicing, it is divided into 20 pieces of 20mmx150mm rectangles, and then turned into sheet-shaped tensile test pieces 2 〇, each test piece has a gage with a width of 12.5mm and a length of 50mm, and the average mechanical properties obtained are as shown in the table. Silicon iron magnesium manganese copper zinc aluminum tensile strength (ksi) Falling strength (ksi) Elongation (%) Gage length 50mm 10-14 < 0.5 0.25-0.50 0.6-1.4 < 0.2 < 1.0 balance 46 25 6.5 Crazy: Use weight percentage (wt ·%) The examples are based on the following composition range, using pure aluminum , Pure silicon, pure copper and aluminum-manganese master alloy are melted in an electric heating crucible furnace, after degassing and slag removal The die-casting machine is die-cast into a slab with a thickness of 0.8mm and an area of 200x300mm. After slicing, it is divided into 20 rectangular pieces of 20mmx150mm, and then turned into 20 pieces of sheet-shaped tensile test pieces, each of which (read first) Note on the back, fill in this page again.) · Mmme ϋ II 1 «^ eJ · ϋ n A— printed by A7 of the Intellectual Property Bureau of the Ministry of Economic Affairs and Staff Consumer Cooperatives. 5. Description of invention (k) The cymbals have a width of 12.5mm. Gage of 50mm (gage), the average mechanical properties obtained are as shown in the table: Silicon iron magnesium manganese steel zinc aluminum tensile strength (ksi) yield strength (ksi) elongation (%) gage 10-14 < 0.5 < 0.2 0.6-1.4 3.0-4.0 < 1.0 balance 45 24 Tv jumm 5.0 Note: Using weight percent (wt ·%) From the alloys of the above two examples, it can be known that the alloy of the present invention can not only obtain large-area thin castings, but also Excellent mechanical properties can be obtained, both of which are better than the currently used AZ91D magnesium alloy in tensile strength, yield strength, and elongation. In summary, it can be seen that the "aluminum alloy for die-casting extremely thin parts" of the present invention not only Novel, progressive, and available The industrial applicability is in accordance with the requirements of the invention. However, the above are only examples of the present invention, and various modifications and changes according to the present invention should still be included in the scope of the patent of this application. ---- ----- Μ ------- J_tri -------- (Please read the notes on the back before filling out this page} Printed by the Employees' Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 8