201039941 六、發明說明： C ^^明戶斤屬軒々貝】 發明領域 本發明係有關一種用以形成一液態鍛造物品的方法與 裝置，且特別是但非唯獨地有關形成一具有高縱橫比之細 構的液態鍛造近網狀物品之方法及裝置。 C先前技術3 0 發明背景 具有高縱橫比之特徵細構的物品傳統上係以包括機 製、擠押、鍛造、或鑄造一金屬例如鋁(A1)等方法來製成。 機製係為一種製法其可製成具有高容差控制和良好表面加 工的物品。然而，其乃耗時且昂貴的，且會造成大量的材 料浪費，令其不適合作為一種量產的製法。擠押和鍛造係 為能製成具有良好結構整體性的物品之製法。但是，傳統 的擠押和鍛造不能形成需要一高密度之具有高縱橫比的細 〇 構之物品’譬如具有緊鄰靠近之凸片和凸銷的散熱器等， 如第1和2圖所示。 模鑄（咼壓和低壓)係為一種競爭技術，其在材料固化時 具有某些形式的間接壓力，而被廣泛使用於工業中。重力 鑄造或模鑄容許物品在很小或沒有壓力下固化。但是，由 重力鑄造或模鑄法製成的物品時常受到限制，譬如在該物 品結構中的多孔性，此乃例如因高壓橫鑄時的淹口内之高 紊流’或在重力鑄造時的氣體滞陷所致，而會造成不佳的 機械性質。模鑄亦不能沒有扭曲變形地形成具有高縱橫比 3 201039941 、=構的網狀物品，例如第丨圖所示之具有高縱橫比凸片1〇的 圓形放熱ι§，其中該各凸片10的高度(h)對厚度⑴之比係大 於40比1 ’即h : t>4〇 :卜又’材料選擇會自然地僅限於铸 化口金’而針對一要被用作為熱管理構件例如散熱器的物 σ 5 〇π乃期望其係由低矽精鍊的鋁合金或純鋁所形成，因為 匕們有較尚的散熱性能。但是，該等材料會由於鑄造過程 斤^5成的收縮缺陷而不能被成功地鑄造。 鑄造或液態锻造係使用至少部份熔化的金屬於-^員和杈組中在直接壓力下來成形物品。具有最小化的材 和收縮缺陷之改良的物品容差將能被獲得。但是， 仍合氣體'仏所產生之多孔性和不完全的部件成形等問題 2存在’尤其是在形成具有高縱橫比之細構的物品時。 f該等高縱橫比的細構必須是尺寸較小之時，例如，若該 =的厚度為2mm<更小時’則此恐將會是—個大問題， <在^等]、細構中的細孔會構成該細構之-相當大比 例’而造成材料破裂及/_件破壞。 【發明内容】 發明概要 依據弟一 Ϋ %ih Yxl σ . . 、 係在提供一種形成一液態鍛造物 扣的方法。該方法包含將 H動㈣ 3將—熔料注人-模穴中；相對於該 =動-衝頭，而使該稼料進入該衝頭内之至少一高縱 年汽比的空穴中，且处翁 u,,, 二軋會經由該衝頭内的至少一通氣道插 砍物釋出；及當該熔料 任6亥咼縱檢比的空穴内固化時施加 —成形壓力於該熔料上。 201039941 該方法可更包含當該物品扣持於該模穴中時，將該衝 頭相對地移離該模穴。該物品較好係藉在一設於一包含該 模穴的模中之一扣持銷中所提供的凹槽内形成該物品之一 扣持部而被扣持於該模穴中。 依據一第二舉例態樣，係提供一種用以形成一液態鍛 造物品的裝置。該裝置包含一模穴用以容納一熔料；及一 衝頭構製成可施加一成形壓力於該熔料上，該衝頭包含至 少一高縱橫比的空穴可供該熔料容納其中，及至少一通氣 Ο 道插嵌物可容許空氣被由該高縱橫比的空穴釋出。 對該二種態樣而言，空氣較好係穿過一由該通氣道插 嵌物與該高縱橫比之空穴所界定的排氣通道釋出。空氣更 ' 可經由至少一設在該通氣道插嵌物中的通氣孔釋出，該通 ' 氣孔係與該排氣通道呈流體導通。 該通氣道插嵌物較好包含一頭部及一插入部，該頭部 係被構製成可相對於該高縱橫比空穴來定位該通氣道插嵌 物，且該插入部係構製成可伸入該高縱橫比空穴中。該插 〇 入部可為推拔狀，而在其伸入該高縱橫比空穴内時具有一 逐漸減少的截面積。 該通氣道插嵌物可設有至少一通氣孔，該通氣孔係與 該排氣通道呈流體導通。該至少一通氣孔較好是設在該頭 部中。 請排氣通道較好係被定寸成可阻止過多的熔料流入其 中，以避免該排氣通道被固化的熔料所阻塞。該排氣通道 可具有一長度介於2mm至6mm之間，且在該通氣道插欲物 5 201039941 與該高縱橫比空穴之一壁間有一至少20mm的餘隙。 該裝置可更包含一扣持銷用以在由該模穴相對地移離 該衝頭時將該物品扣持於該板穴中’該扣持鎖係被設在一 包含該模穴的模中。該扣持銷較好包含一凹槽可供該熔料 固化於其中，而在該凹槽内形成該物品之一扣持部。 該裝置可包含多數個高縱橫比空穴及對應的多數個通 氣道插欲物。該多數個通氣道插嵌物可被個別地提供。 依據一第三舉例態樣，係在提供一種以第一態樣之方 法所形成之具有高縱橫比細構的液態鍛造物品。 依據一第四舉例態樣，係在提供一種以第二態樣之裝 置所製成之具有高縱橫比細構的液態鍛造物品。 圖式簡單說明 為使本發明能被完全地瞭解並容易地進入實際應用， 現將藉由本發明之非限制性的實施例來描述說明，該等描 述係參照所附的說明性圖式。 在該等圖式中： 第1(a)圖係為一具有高縱橫比細構之物品，即一具有推 拔凸片的圓形散熱器之一側視示意圖； 第1(b)圖係為第1(a)圖的散熱器之一頂視示意圖； 第2圖係為數個具有高縱橫比細構的典型物品，即具有 推拔凸片、凸銷和徑向凸片等之散熱器的立體示意圖； 第3圖係為一形成液態鍛造物品之舉例方法的流程圖； 第4圖為一用以形成液態鍛造物品之舉例裝置在一將 一熔料注入一模穴内的形成步驟之側視截面示意圖； 201039941 • 第5®^40之裝置在—將1頭移人該模穴中的形 成步驟之側視截面示意圖； 第6圖為通氣道插嵌物在第4圖的裝置之衝頭中的側視 截面示意圖； 第7圖為第6圖之-通氣道杨嵌物的放大圖； 第8圖為第4圖之裝置在—將該衝頭由模穴相對地移離 的形成步驟之示意圖； 〇 帛9SIΜ4圖之裝£在~由該模穴逐出-成形物品的 形成步驟之示意圖； 第帅Hb)圖為除去該成形物品的_部份之側視示意圖； 帛11®為被形成具有毛邊的高縱横比細構之側視示意圖； 帛12圖為由本發明的舉例方法和裝置所形成之舉例物 品的立體像片； 第13⑻圖為由傳統鑄造所獲得之材料晶粒尺寸的顯微 像片；及 〇 第13(_為由本發明所獲得之材料晶粒尺寸_微像片。 C實施方式j 較佳實施例之詳細說明 ""〇圖中所示，一舉例的方法1〇〇和裝置20係被 用於形成液態锻造物品，其具有至少—高縱橫比的 特徵細構而有較好大於4():丨的高度對寬度之比率。 〇妓該裝置:°包含—衝頭22具有至少—個高縱橫比空穴24 ^ 二墙造物品30中形成一高縱橫比細構物34。針 匕、有夕數個馬縱橫比細構物34的物品，會有對應多數個 7 201039941 高縱橫比空穴24等被提供於該衝頭22中。各高縱橫比空穴 2 4皆具有一内部空穴形狀對應於一要被形成於該物品3 〇中 的所需細構物，例如一被示於第2圖之散熱器中的凸銷或凸 片。該等高縱橫比空穴24可由設在該衝頭22中之對應的高 縱橫比細構物25等來界定。 該裝置20更包含一底拉件或扣持銷44設在一模42中可 供部件扣持和逐出。在一實施例中’該底拉件或扣持銷44 係設有一T形的凹槽46’可供使用一鳩尾套合方式來扣持一 形成的物品。該衝頭22和模42較好係被定向且設成一上衝 頭22和一底下模42。 如第4圖所示，在該舉例方法1〇〇之—第一步驟時，一 熔料52包含一用以形成該物品30之至少部份熔化的材料， 會被例如經由一導槽50注入該模42之一模穴41中（1〇2)。該 熔料溫度可由710°C至750。(：，乃視所選擇的材料而定。 嗣，如第5圖中所示，該衝頭22會被相對於該模穴41移 動以接觸該模穴41中的熔料52(1〇4)，而使該熔料52進入該 扣持銷44的凹槽46内，俾在該液態鍛造物品3〇中形成一扣 持部36。該熔料52亦會被強迫流動而進入該衝頭”的高縱 橫比空穴24内。此較好係將該衝頭22帶向該模穴41如箭號 60所示地來達成。該衝職與敎41之間的衝壓速度或相 對速度較好係少於G_5ms.i，韓許料空幻4巾完全填滿 該炫料52。 ' 實質上沒有氣泡會被滞陷其中，或由該進 等高縱橫比空穴24雜料52所產生，因空氣會被釋放或被 201039941 容許經由提供於該衝頭22中的通氣道插嵌物8〇逃逸（1〇6)。 如第6圖所示，每一高縱橫比空穴24皆在該衝頭22中設有其 各自的通氣道插嵌物80，以容許空氣被由各高縱橫比空穴 24釋出。此可確保所有的空穴24等皆完全被該熔料52填 滿，而在成形時能實質上免除多孔性或有不完全部件形成 於該物品30中。 各通氣道插嵌物80較好具有一頭部82及一插入部84。 該頭部82和該插入部84係可互相整合成一體。該頭部82可 被容納於該衝頭22中之一對應形狀且較好係構設在該通氣 道插嵌物80相對於所對應之高縱橫比空穴24的位置之凹槽 23内。該插入部84係構製成可伸入該高縱橫比空穴24中， 而使該通氣道插嵌物80具有一概呈T形的截面，如第7圖中 所示。因此，該通氣道插嵌物8〇乃可包含例如一盤狀的頭 部82及一桿狀的插入部84以供形成一高縱橫比的凸銷；或 一伸長而實質上呈矩形的頭部82及一伸長而實質上呈矩形 的插入部84以供形成一高縱橫比的凸片，耑視要被形成的 所需南縱橫比細構而定。 該插入部84較好係為推拔的，當其伸入該高縱橫比空 八24中時會有一逐漸減少的截面積，而使該插入部會與 該高縱橫比空六24界定―排氣通道86。各通氣道插敌物 亦較好在該頭部80中設有至少一個通氣孔88，該通氣孔88 係與該排氣通道86呈流體地導通。該排氣通道86和通氣孔 88在該熔料52進入該高縱橫比空穴24内時，可容許空氣由 該空穴24内沿第7圖中之箭號66所示的方向逃逸。 9 201039941 該通氣道插嵌物80較好係由一高導熱性材料製成，孽 如一銅基類材料，俾使當該熔料52與該通氣道插嵌物8〇接 觸時，該熔料52會迅速地冷却。該熔料52的快速冷却會阻 止該傢料52過分地流入該排氣通道86中，其會導致該排氣 通道86或通氣孔88的堵窒或阻塞。因此，該排氣通道86應 被定十成能防止過多熔料流入其中’俾可避免被固化的熔 料52卩且塞，而仍可充分地容許空氣被釋出。針對於此，該 排氣通道86沿該空穴24可具有一介於2mm至6mm之間的長 度’且在該插入部84與該高縱橫比空穴24的一壁26之間具 有一至少20μηι的餘隙。 該衝頭2 2係構製成當該熔料5 2在該高縱橫比空穴2 4中 固化時，可施加一50MPa至120MPa之間的成形或直接壓力 於該熔料52上（108)。藉著在固化期間施加一直接成形壓 力，應力會均勻地分佈於該固化材料中，因此實質上所有 的收縮缺陷會在該形成的物品中被消除。經由該等通氣道 80來釋出空氣，及在該衝頭22的直接壓力下來固化該熔料 52 ’將可造成一具有高縱橫比細構物34且實質上沒有多孔 性或收縮缺陷之近似網狀物品30的形成。 在該熔料52已凝固之後，該衝頭22會相對於該模穴41 移動，以使該液態鍛造物品30與該衝頭22分開。例如在第8 圖中所示，該衝頭22可被由該模42縮回，如箭號62所示， 而留下該液態鍛造物品30在該模穴41中。該衝頭22能被缩 回而不會使該形成的物品30黏著於該衝頭22，因為在兮扣 持銷4 4中的凹槽4 6與形成於該物品3 〇中的扣持部3 6之間有 201039941 鳩尾套合。該液態锻造物品3〇嗣會藉該扣持銷44與模42之 間的相對移動而被由該模穴41移除或逐出，直到該所形成 的物品30完全離開模穴41為止。該相對移動較好係藉將該 扣持銷44沿第9圖中之箭號64所示的方向移入該模穴41 中’以使該形成物品30被推出該模穴41而來達成。 該物品30可被以機製加工來完成或切掉該扣持部36， 如第10(a)圖中的虛線所示，而形成一具有高縱橫比的細構 0 34之近網狀液態鍛造物品3〇，如第1〇⑻圖中所示。第^圖 示出舉例的高縱橫比之細構物70、72等，由於該熔料52在 排氣通道27中冷却的結果而形成具有擠壓餘料的毛邊71、 73等。一較厚的細構物7〇之毛邊如第u⑻圖中所示，可 被以噴砂或滚磨來除去。而一較薄細構物72如第11(b)圖中 所示者可能並非剛硬得足以承受噴砂或滚磨之力，故該等 毛邊73可被切掉或剪除。 由上述之舉例的方法1 〇 〇和裝置2 〇所形成之舉例的液 Q 態锻造物品譬如具有高縱橫比凸片92或凸銷94的散熱器90 係被示於第12圖中。如在第13(b)圖中可見，該等液態鍛造 物品的微結構晶粒尺寸係遠小於第13(a)圖中所示之以傳統 鑄造法形成的物品之晶粒尺寸。較小的晶粒尺寸以及幾乎 沒有細孔會造成該液態鍛造物品優於傳統鑄造物之改良的 韋刀性’而得強化所形成的高縱橫比細構物。 雖前在本發明之實施例的以上描述中已有說明，但精 習於該技術者應可瞭解許多設計、構造及/或操作上的細節 變化亦可能被達成而不超出本發明。例如，若有多數個高 11 201039941 縱橫比的空穴24被提供於該衝頭22中，201039941 VI. INSTRUCTIONS: C ^^明家斤轩轩贝] FIELD OF THE INVENTION The present invention relates to a method and apparatus for forming a liquid forged article, and particularly, but not exclusively, to form a high aspect A method and apparatus for forging a near mesh article in a liquid form. C. Prior Art 30 BACKGROUND OF THE INVENTION Articles having a high aspect ratio feature are conventionally made by a method including machine, extrusion, forging, or casting of a metal such as aluminum (A1). The mechanism is a method that can be made into articles with high tolerance control and good surface processing. However, it is time consuming and expensive, and it causes a large amount of material waste, making it unsuitable as a mass production method. Crowding and forging are methods for making articles with good structural integrity. However, conventional pinching and forging cannot form articles of a high-density structure having a high aspect ratio, such as a heat sink having a tab and a pin adjacent thereto, as shown in Figs. 1 and 2. Molding (rolling and low pressure) is a competitive technique that has some form of indirect pressure when the material cures and is widely used in the industry. Gravity casting or molding allows the article to cure with little or no pressure. However, articles made by gravity casting or die casting are often limited, such as porosity in the structure of the article, such as high turbulence in the flooding port during high pressure transverse casting or gas during gravity casting. Caused by stagnation, which can cause poor mechanical properties. Molding can also form a mesh-like article having a high aspect ratio 3 201039941, = without distortion, such as a circular heat release having a high aspect ratio tab 1 丨 shown in the figure, wherein the tabs The ratio of the height (h) to the thickness (1) of 10 is greater than 40 to 1 'that is h: t > 4 〇: 卜 and 'material selection will naturally be limited to casting gold' and for one to be used as a thermal management member, for example The radiator σ 5 〇 π is expected to be formed from low-grade refined aluminum or pure aluminum because of their superior heat dissipation properties. However, such materials cannot be successfully cast due to shrinkage defects in the casting process. Casting or liquid forging uses at least partially molten metal to form articles under direct pressure in a group of members and crucibles. Improved article tolerances with minimized material and shrinkage defects will be obtained. However, there are still problems such as the porosity generated by the gas '仏 and the incomplete part forming 2', especially when forming a fine structure having a high aspect ratio. f The fine aspect ratio of the structure must be small when the size is small, for example, if the thickness of the = 2 mm < less hours, then this will be a big problem, < in ^, etc., fine structure The pores in the structure will constitute a rather large proportion of the texture - resulting in material cracking and / / damage. SUMMARY OF THE INVENTION Summary of the Invention A method of forming a liquid forged buckle is provided by the method of %ih Yxl σ . The method comprises: moving H (4) 3 into a melt-injection cavity; and in relation to the = motion-punch, causing the crop to enter at least one high longitudinal steam ratio cavity in the punch And the second rolling is released through the at least one air passage in the punch; and the forming pressure is applied to the melting when the molten material is solidified in the cavity of the longitudinal ratio of 6 On the material. 201039941 The method can further include moving the punch relatively away from the cavity when the article is held in the cavity. Preferably, the article is retained in the cavity by forming a retaining portion of the article in a recess provided in one of the retaining pins of the mold containing the cavity. According to a second exemplary aspect, a device for forming a liquid forged article is provided. The device includes a cavity for receiving a melt; and a punch configured to apply a forming pressure to the melt, the punch including at least one high aspect ratio cavity for the melt to be contained therein And at least one venting insert insert allows air to be released by the high aspect ratio of the void. For both of these aspects, air is preferably released through an exhaust passage defined by the airway insert and the high aspect ratio cavity. The air more can be released via at least one vent provided in the air vent insert, the through venting system being in fluid communication with the venting passage. Preferably, the airway insert includes a head and an insertion portion, the head being configured to position the airway insert relative to the high aspect ratio cavity, and the insertion portion is constructed The protrusion can extend into the high aspect ratio cavity. The insertion portion may be of a push-up shape and have a gradually decreasing cross-sectional area as it projects into the high aspect ratio cavity. The airway insert may be provided with at least one venting opening that is in fluid communication with the venting passage. Preferably, the at least one vent is provided in the head. Preferably, the venting passage is sized to prevent excess melt from flowing into it to prevent the venting passage from being blocked by the solidified melt. The exhaust passage may have a length of between 2 mm and 6 mm and a clearance of at least 20 mm between the air passage insert 5 201039941 and one of the walls of the high aspect ratio cavity. The device may further include a latching pin for holding the article in the pocket when the punch is relatively moved away from the punch. The latching lock is disposed in a die containing the cavity in. Preferably, the retaining pin includes a recess for the melt to solidify therein, and a retaining portion of the article is formed in the recess. The device can include a plurality of high aspect ratio cavities and a corresponding plurality of venting channels. The plurality of airway inserts can be provided individually. According to a third exemplary aspect, there is provided a liquid forged article having a high aspect ratio fine structure formed by the method of the first aspect. According to a fourth exemplary aspect, there is provided a liquid forged article having a high aspect ratio fine structure made in a second aspect. BRIEF DESCRIPTION OF THE DRAWINGS In order that the present invention can be fully understood and readily put into practice, the description will now be described by way of non-limiting embodiments of the invention. In the drawings: Figure 1(a) is a side view of a material having a high aspect ratio and fine structure, that is, a circular heat sink having a push-out tab; Figure 1(b) A top view of one of the heat sinks of Figure 1(a); Figure 2 is a typical article with a high aspect ratio and fine structure, that is, a heat sink with push-out tabs, lugs, and radial tabs. 3 is a flow chart of an exemplary method of forming a liquid forged article; and FIG. 4 is an exemplary apparatus for forming a liquid forged article on the side of a forming step of injecting a melt into a cavity Schematic cross-sectional view; 201039941 • Side view of the 5®^40 device in the step of forming a head in the cavity; Figure 6 is a view of the device in the airway insert in Figure 4. A side cross-sectional view of the head; Fig. 7 is an enlarged view of the airway poplar in Fig. 6; Fig. 8 is a view of the apparatus of Fig. 4 in which the punch is relatively moved away from the cavity Schematic diagram of the steps; 〇帛9SIΜ4 diagram installed in the ~ from the cavity - the formation steps of the shaped article Figure Hb) is a side view showing the portion of the formed article removed; 帛11® is a side view showing a high aspect ratio fine structure having a burr; 帛12 is illustrated by the exemplary method and apparatus of the present invention. A stereoscopic image of the formed article is formed; Figure 13(8) is a photomicrograph of the grain size of the material obtained by conventional casting; and 〇13 (_ is the grain size_micrograph of the material obtained by the present invention. C. EMBODIMENT j DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT As shown in the drawings, an exemplary method 1 and apparatus 20 are used to form a liquid forged article having at least a high aspect ratio characteristic. The structure has a height to width ratio of preferably greater than 4 (): 丨. The device: ° includes - the punch 22 has at least one high aspect ratio cavity 24 ^ a high aspect is formed in the second wall article 30 The ratio of the fine structure 34. The needles and the articles having the horse-horizontal ratio of the horse-length ratio 34 have a corresponding number of 7 201039941 high aspect ratio holes 24 and the like are provided in the punch 22. Each high aspect ratio The holes 2 4 each have an internal cavity shape corresponding to one to be formed in the The desired microstructure in the article 3, such as a lug or tab shown in the heat sink of Figure 2. The equal aspect ratio cavity 24 can be correspondingly high in the punch 22. The aspect ratio is defined by a fine structure 25, etc. The device 20 further includes a bottom pull member or a catching pin 44 disposed in a mold 42 for holding and ejecting the component. In an embodiment, the bottom pull member or The retaining pin 44 is provided with a T-shaped recess 46' for holding a formed article using a dovetail fit. The punch 22 and the die 42 are preferably oriented and configured as an upper punch 22 And a bottom mold 42. As shown in Fig. 4, in the first step of the exemplary method, a melt 52 includes a material for forming at least a portion of the article 30 to be melted, for example, It is injected into one of the cavities 41 of the mold 42 via a guide groove 50 (1〇2). The melt temperature can range from 710 °C to 750. (:, depending on the material selected. 嗣, as shown in Fig. 5, the punch 22 is moved relative to the cavity 41 to contact the melt 52 in the cavity 41 (1〇4) And the melt 52 enters the recess 46 of the retaining pin 44, and a catch portion 36 is formed in the liquid forged article 3〇. The melt 52 is also forced to flow into the punch. The high aspect ratio cavity 24 is preferred. This is preferably achieved by bringing the punch 22 toward the cavity 41 as indicated by arrow 60. The stamping speed or relative speed between the punch and the sill 41 is relatively high. It’s better than G_5ms.i, and Han Xu’s empty 4th towel completely fills the slab 52. 'In essence, no bubbles will be trapped in it, or it will be generated by the high aspect ratio cavity 24, 52. Since the air is released or allowed by 201039941 to escape through the air channel insert 8 provided in the punch 22, as shown in Fig. 6, each high aspect ratio cavity 24 is in the The respective air passage inserts 80 are provided in the punch 22 to allow air to be released from the respective high aspect ratio cavities 24. This ensures that all of the cavities 24 and the like are completely filled by the melt 52. The porosity can be substantially eliminated during molding or an incomplete component can be formed in the article 30. Each airway insert 80 preferably has a head portion 82 and an insertion portion 84. The head portion 82 and the insertion portion 84 are formed. The heads 82 can be integrated into one another. The head 82 can be received in a corresponding shape of the punch 22 and preferably configured in the airway insert 80 relative to the corresponding high aspect ratio cavity 24. Positioned in the recess 23. The insertion portion 84 is configured to extend into the high aspect ratio cavity 24 such that the air channel insert 80 has a generally T-shaped cross section, as shown in FIG. Therefore, the air channel insert 8 can include, for example, a disk-shaped head 82 and a rod-shaped insertion portion 84 for forming a high aspect ratio bump; or an elongated and substantially rectangular shape The head portion 82 and an elongated and substantially rectangular insertion portion 84 for forming a high aspect ratio tab, depending on the desired south aspect ratio to be formed. The insertion portion 84 is preferably For pushing, when it is inserted into the high aspect ratio space 24, there will be a gradually decreasing cross-sectional area, and the insertion portion will be The high aspect ratio space 64 defines an "exhaust passage 86." Preferably, each air passage inserting enemy is provided with at least one venting opening 88 in the head portion 80, the venting opening 88 being fluid with the exhaust passage 86. The exhaust passage 86 and the venting opening 88 allow air to pass from the inside of the cavity 24 in the direction indicated by arrow 66 in FIG. 7 when the melt 52 enters the high aspect ratio cavity 24. 9 201039941 The airway insert 80 is preferably made of a highly thermally conductive material, such as a copper based material, such that when the melt 52 is in contact with the air channel insert 8 The melt 52 is rapidly cooled. The rapid cooling of the melt 52 prevents the home material 52 from flowing excessively into the exhaust passage 86, which can cause blockage or blockage of the exhaust passage 86 or vent 88. Therefore, the exhaust passage 86 should be fixed to prevent excessive melt from flowing into it. The crucible can be prevented from being clogged and solidified, while still allowing the air to be released. To this end, the exhaust passage 86 may have a length 'between 2 mm and 6 mm along the cavity 24 and have at least 20 μm between the insertion portion 84 and a wall 26 of the high aspect ratio cavity 24. Clearance. The punch 2 2 is configured to apply a forming or direct pressure between the 50 MPa and 120 MPa to the melt 52 when the melt 5 2 is solidified in the high aspect ratio cavity 24 (108) . By applying a direct forming pressure during curing, the stress is evenly distributed in the cured material, so substantially all of the shrinkage defects are eliminated in the formed article. The release of air through the air passages 80 and the solidification of the melt 52' under the direct pressure of the punch 22 will result in an approximation of a high aspect ratio microstructure 34 with substantially no porosity or shrinkage defects. The formation of the mesh article 30. After the melt 52 has solidified, the punch 22 will move relative to the cavity 41 to separate the liquid forged article 30 from the punch 22. For example, as shown in FIG. 8, the punch 22 can be retracted by the die 42, as indicated by arrow 62, leaving the liquid forged article 30 in the cavity 41. The punch 22 can be retracted without adhering the formed article 30 to the punch 22 because of the recess 46 in the latching pin 44 and the latch formed in the article 3 There is a 201039941 appendix fit between 3 and 6. The liquid forged article 3 is removed or ejected by the cavity 41 by the relative movement between the retaining pin 44 and the die 42 until the formed article 30 is completely removed from the cavity 41. Preferably, the relative movement is achieved by moving the retaining pin 44 into the cavity 41 in the direction indicated by arrow 64 in Figure 9 to cause the formed article 30 to be pushed out of the cavity 41. The article 30 can be machined to complete or cut the retaining portion 36, as shown by the dashed line in Figure 10(a), to form a near-mesh liquid forging of a finely structured 0 34 having a high aspect ratio. Item 3〇, as shown in Figure 1(8). The figure shows an example high aspect ratio fine structure 70, 72, etc., and as a result of the cooling of the melt 52 in the exhaust passage 27, burrs 71, 73 and the like having a squeeze residue are formed. A thicker finish 7 burr can be removed by sandblasting or barreling as shown in Figure u(8). While a thinner, thinner structure 72, as shown in Fig. 11(b), may not be rigid enough to withstand the forces of sand blasting or barreling, the burrs 73 may be cut or cut. An example of a liquid Q-state forged article formed by the method 1 〇 and the apparatus 2 exemplified above, such as a heat sink 90 having a high aspect ratio tab 92 or a lug 94, is shown in Fig. 12. As can be seen in Fig. 13(b), the microstructure grain size of the liquid forged articles is much smaller than the grain size of the article formed by the conventional casting method shown in Fig. 13(a). The smaller grain size and the absence of fine pores result in an improved aspect ratio of the liquid forged article over conventional castings. Although the foregoing description of the embodiments of the invention has been described, it is understood by those skilled in the art that many details of the design, construction, and/or operation can be made without departing from the invention. For example, if a plurality of holes 24 having an aspect ratio of 2010 201041 are provided in the punch 22,
成一整體單元地提供而包含多數個插 的頭部82上，用以減低機具成本。該 甲，則斟應的多數個通 出，或者亦可形 插入部84佈設在一單獨 該多數個高縱橫比空穴 叫及它們的對應道插絲8〇)可為相同或不同的，乃視 要被形成之所需高縱橫比細構物34而定。軸_造物品 30可為對稱或不是對稱的。 C圖式簡單說明】 第1(a)圖係為一具有高縱橫比細構之物品，即一具有推 拔凸片的圓形散熱器之一側視示意圖； 第1(b)圖係為第1(a)圖的散熱器之—頂視示音圖； 第2圖係為數個具有高縱橫比細構的典型物品，即具有 推拔凸片、凸銷和徑向凸片等之散熱器的立體示意圖； 第3圖係為-形成液態锻造物品之舉例方法的流程圖； 第4圖為一用以形成液態鍛造物品之舉例裝置在一將 〜熔料注入一模穴内的形成步驟之側視截面示意圖； 第5圖為第4圖之裝置在—將一衝頭移入該模穴中的形 成步驟之側視截面示意圖； 第6圖為通氣道插嵌物在第4圖的裝置之衝頭中的側視 戴面示意圖； 第7圖為第6圖之一通氣道插嵌物的放大圖； 第8圖為第4圖之裝置在一將該衝頭由模穴相對地移離 的形成步驟之示意圖； 第9圖為第4圖之裝置在—由該模穴逐出一成形物品的 12 201039941 形成步驟之示意圖； 第10(a)-(b)圖為除去該成形物品的一部份之側視示意圖； 第11圖為被形成具有毛邊的高縱橫比細構之側視示意圖； 第12圖為由本發明的舉例方法和裝置所形成之舉例物 品的立體像片， 第13 (a)圖為由傳統鑄造所獲得之材料晶粒尺寸的顯微 像片；及 第13(b)圖為由本發明所獲得之材料晶粒尺寸的顯微像片。 【主要元件符號說明】 10...凸片 46...凹槽 20...形成裝置 50…導槽 22…衝頭 52···熔料 23.··凹槽 60...衝壓方向 24...空穴 62...縮回方向 25，70，72."細構物 64...移入方向 26...壁 66...排氣方向 30...液態鍛造物品 71，73...毛邊 34...細構物 80...通氣道插嵌物 36...扣持部 82...頭部 41...模穴 84".插入部 42···模 86…排氣通道 44...扣持銷 88...通氣孔 13 201039941 90.. .散熱器 92.. .凸片 94.. .凸銷 100.. .形成方法 102〜108...各步驟 h.._尚度 t...厚度 14It is provided in a unitary unit and includes a plurality of inserted heads 82 for reducing the cost of the implement. The armor may be the same or different, or the shape inserting portion 84 may be disposed in a single plurality of high aspect ratio cavities and their corresponding splice wires 8). Depending on the desired high aspect ratio microstructure 34 to be formed. The axis_article 30 can be symmetrical or not symmetrical. Brief Description of Drawing C] Figure 1(a) is a side view of a circular heat sink with a high aspect ratio, that is, a circular heat sink with push-pull tabs; Figure 1 (a) shows the top view of the heat sink; Figure 2 shows several typical items with high aspect ratio and fine structure, that is, heat dissipation with push tabs, lugs and radial tabs. 3 is a flow chart of an exemplary method of forming a liquid forged article; FIG. 4 is an exemplary device for forming a liquid forged article in a forming step of injecting a melt into a cavity. Figure 5 is a side cross-sectional view of the apparatus of Figure 4 in the step of forming a punch into the cavity; Figure 6 is a view of the device of the airway insert in Figure 4. A side view of the punch in the punch; Fig. 7 is an enlarged view of the airway insert in Fig. 6; Fig. 8 is a view of the device of Fig. 4 in which the punch is relatively moved away from the cavity A schematic diagram of the forming step; Figure 9 is a device of Figure 4 in which the forming of the shaped article is ejected from the mold hole 12 201039941 BRIEF DESCRIPTION OF THE DRAWINGS Fig. 10(a)-(b) is a side elevational view showing a portion of the shaped article removed; and Fig. 11 is a side elevational view showing a high aspect ratio fine structure having a burr; Fig. 12 For a stereoscopic image of an exemplary article formed by the exemplary method and apparatus of the present invention, Figure 13(a) is a photomicrograph of the grain size of the material obtained by conventional casting; and Figure 13(b) is a A microscopic image of the grain size of the material obtained by the invention. [Description of main component symbols] 10...protrusion 46...groove 20...forming device 50...guide groove 22...punch 52···melt 23···groove 60...punching direction 24...hole 62...retraction direction 25,70,72."thinning 64...shifting direction 26...wall 66...exhaust direction 30...liquid forged item 71 , 73... Burr 34... Fine structure 80... Air passage insert 36... Buckle 82... Head 41... Cavity 84". Insert 42··· Die 86...exhaust passage 44...holding pin 88...venting hole 13 201039941 90...heatsink 92..protruding 94..prosthetic pin 100..forming method 102~108.. Each step h.._尚度 t...thickness 14