1250913 九、發明說明： 【發明所屬之技術領域】 本發明係關於熱導管之製造方法，特別地指一種先以固 定尺寸製成規格一致之熱導管半成品，再依客戶需求長度進 行後續製程，而能提高生產效率及大幅縮短交貨期。 【先前技術】 近年來隨著資訊、通信及光電產業的快速發展，電子產 品逐漸走向高階化及輕薄化，在高速度、高頻率及小型化之1250913 IX. Description of the Invention: [Technical Field] The present invention relates to a method for manufacturing a heat pipe, and particularly to a heat pipe semi-finished product which is first made in a fixed size and then subjected to a subsequent process according to the length of the customer's demand. Can improve production efficiency and significantly shorten delivery time. [Prior Art] In recent years, with the rapid development of the information, communication and optoelectronic industries, electronic products have gradually become higher-order and lighter, at high speed, high frequency and miniaturization.
需求下，電子元件的發熱密度愈來愈高，因此散熱效率已經 成爲決定電子產品穩定性的重要因素；由於熱導管具有高效 率的熱傳導特性，已是電子產品中廣泛應用的導熱元件之 一。導熱管主要藉由在其內壁燒結有毛細層之密閉的真空銅 管’利用管內之工作流體在蒸發端吸收熱源（如C P U等） 而·化’受熱端之蒸氣壓力因此昇高而流向壓力較低的冷凝 端’該蒸氣在冷凝端經散熱（例如以散熱鰭片及風扇等）後 凝結成液體而受毛細層之毛細力作用迴流到蒸發端，構成一 密閉循環。 習知熱導管之製造方法，例如第丨、^及ib圖所示 其包括下列步驟： 依客戶需求之尺寸裁切 備料步驟：準備空銅管（1〇)， 成預定長度（如第la圖之步驟一，） 1 0 a )封口，並在此 ，並自另一端（l〇b) 一次封口步驟：將空銅管之一端（ 封口端點焊（如第1 a圖之步驟二，）。 塡粉步驟：將一中心棒（丨丨）定位 1250913 將金屬粉（1 2 )充塡入銅管（1 ο )內（如第1 a圖之步驟三，）。 燒結步驟：將銅管（10 )加熱，使金屬粉（i 2 )在該銅 管（1 〇 )內壁形成一毛細層（1 2 ’）（如第1 a圖之步騾四，）。 ' 縮脖步驟：取出中心棒（1 1)，將銅管（10 )之開放端 1 〇b ’藉由模具（1 3 )縮小管徑（如第1 a圖έ步驟五，）。 真空注液步驟··將該銅管（1 0 )內部抽真空，並注入工 作流體（1 4 )(如第1 a圖之步驟六’）。 二次封口步驟：將該銅管（1 0 )縮脖端（1 0b，）密封及 # 壓合（如第lb圖之步驟七，）。 定長步驟：將兩端封閉之銅管（1 0 )依客戶需要之尺寸 裁疋長度’及將裁切處加以點焊（如第1 b圖之步驟八，）。 塑型步驟：將裁定長度之銅管（1 0 )，依客戶需求之形 狀彎折或壓平而完成熱導管成品（1 0 ’）（如第1 b圖之步驟 九，）。 上述習知製法，乃依客戶需求以批次之預定長度製造， 製程上每一批次之長度不一，自動化製程不易控管，且製程 ^ 耗時較長，不但影響生產效率、不良率高，且延長交貨期。 此外，對於銅粉燒結式導熱管而言，在後續加工製程 中，是依據客戶所需之長度進行裁切，裁切時必須保持熱導 管的密閉性，若密閉性一但破壞將喪失導熱管之功能，因此 封口後的半成品熱導管要在不破壞密閉性的情形下進行裁 斷，通常需先將裁斷部位縮小管徑，再進行壓合及裁斷較能 確保裁斷面之密合性。上述習知製程中，即需先確定長度， 再如步驟五’將導熱管之一端推入旋轉中之模具（1 3 )逐歩 1250913 縮小管徑至裁斷處，再進行真空注液、二次封口、定長及塑 形等步驟，故無法預先做成半成品來因應父貨期。 或許，熟習此項技術者容易思及，取一加長的最大長度 値預先做成熱導管半成品，再依客戶需求尺寸將半成品從邊 端縮脖加工來定長度，以改善傳統製法之缺點；惟’從上述 習知之熱導管之製程中，歸納邊端縮脖加工製程的缺點如 下： 1 )從任一封口端進行邊端縮小管徑加工，在加工過程中容 易對封口結構造成破壞，而導致熱導管失效。 2 )從任一封口端進行邊端縮小管徑加工，若須要裁掉較長 的長度時，則需耗費較長的工時來縮管至裁斷處，且耗 費材料。 3 )從任一封口端進行邊端縮小管徑加工，若須要裁掉較長 的長度時，加工過程中銅管容易產生彎曲變形，影響加 工品質。 4 )從任一封口端進行邊端縮小管徑加工，縮管的距離愈長 產生的銅粉屑愈多，並且不容易排除會殘留於熱導管中 影響導熱品質。 【發明內容】 因鑑於傳統熱導管製程之缺點，本發明之主要目的在於 提供一種熱導管之製造方法’除了易於進行自動化製程、簡 化管理之外，可提高生產效率及大幅縮短交貨期。 爲/達成上述目的及其他目的，本發明熱導管之製造方 法，至少包括下列步驟： 1250913 備料步驟（步驟一）：準備固定尺寸之空銅管。 一次封口步驟（步驟二）：將空銅管之一端封口，及在 此封口端點焊。 塡粉步驟（步驟三）：將一中心棒定位在該銅管內，並 自另一端充塡入金屬粉。 燒結步驟（步驟四）··將銅管加熱使金屬粉在該銅管內 壁形成一毛細層，然後取出中心棒。 真空注液步驟（步驟五）：將銅管內部抽真空，並注入 Φ 熱傳介質。 二次封口步驟（步驟六）：將該銅管另一端封口、壓合， 完成半成品。 縮脖步驟（步驟七）：依客戶需要之尺寸在半成品銅管 之定點上局部縮小孔徑。 定長步驟（步驟八）：將半成品銅管加熱，同時在縮脖 處裁斷並加以點焊。 塑型步驟（步驟九）：將裁斷之銅管依客戶需求之形狀 ®彎折或壓平。 根據本發明之製程，步驟一至步驟六係先做成固定標準 長度的熱導管半成品，步驟七至步驟九再依據客戶要求之規 格將半成品進行後續加工製成熱導管成品。以銅粉燒結式熱 導管而言’從備料至半成品之製程耗時較長，因此以規格一 至夕β銅管製造半成品，除了易於進行自動化製程、簡化管 理、提高良率及生產效率之外，並且以標準的熱導管半成品 因應客戶需求進行後續加工，可大幅縮短交貨期。此爲本發 1250913 明之主要目的。 根據本發明，在半成品後續的加工製程中，係在已封口 之熱導管除了邊端以外之定點上進行縮小管徑加工，可避免 直接碰觸封口端，封口結構不會受到破壞，能保持封口良好 的密合性。並且，此種縮脖加工方式僅需縮管約i 〇〜3 0mm 一小段距離即可’能節省工時提高加工效率；此外，在縮脖 過程中於銅管內部產生的銅粉屑量很小，且易於排到廢料端 切除。此爲本發明之次一目的。 ®【實施方式】 以下將配合實施例對本發明技術特點作進一步地說 明，該實施例僅爲較佳代表的範例並非用來限定本發明之實 施範圍，謹藉由參考附圖結合下列詳細說明而獲致最好的理 解。 首先，請參考第2〜2b圖，根據本發明熱導管之製造方 法，至少包括下列步驟： 備料步驟··準備固定尺寸之空銅管1 0 0 (如第2 a圖之步 • 驟一），該空銅管100通常大於客戶需求之長度。 一次封口步驟：將空銅管1 〇 〇之一端1 〇 〇 a封口，及在 此封口端點焊（如第2 a圖之步驟二）。 塡粉步驟：先將一中心棒101定位在該銅管100內之中 心準位上，再將金屬粉102自該銅管100另一端100b充塡 入管內，使中心棒101外周形成一均等厚度的金屬粉102層 (如第2a圖之步驟二）。 燒結步驟：將銅管100加熱’使該金屬粉102在銅管 1250913 100內壁形成一等厚的毛細層102,（如第2a圖之步驟四）， 冷卻後取出中心棒1 0 1形成一空心管道。 真空注液步驟：將銅管1 00內部抽真空，並注入熱傳介 質103(如弟2a圖之步驟五），該熱傳介質103視熱導管之 用途及工作溫度而定，在本實施例中該熱傳介質1 〇 3以水作 爲代表說明。 二次封口步驟：將該銅管1 〇 〇另一端i 0 〇b封口並壓合， 完成熱導管半成品1〇〇’（如第2a圖之步驟六）。 縮脖步驟：藉由模具104依客戶需要之尺寸在熱導管半 成品1 00 ’邊端以外之定點上縮小管徑，例如以旋轉中同時往 中心方向相對移動之兩片式的模具1 04來局部縮小管徑，形 成一約10〜3 0mm的頸部105 (如第2b圖之步驟七）。 定長步驟：將縮脖完成之熱導管半成品1 0 〇，加熱，使管 內之熱傳介質1 0 3成均壓、均溫及均濕之飽和態，並從該頸 部1 〇 5裁斷壓合，及在此裁斷處加以點焊（如第2 b圖之步 驟八）。 塑型步驟：將裁斷之熱導管半成品100’依客戶需求之形 狀彎折或壓平，而完成熱導管成品1 0 0，，（如第2 b圖之步驟 九）。 另外，第3〜3 b圖係根據本發明熱導管之製造方法之另 一種實施例，本實施例不同之處係以加長的空銅管，例如足 以载切成兩單元或兩單元以上之固定尺寸的空銅管，先做成 標準長度的熱導管半成品，再依據客戶要求之規格將半成品 進行後續加工製成熱導管成品。根據本實施例之製造方法， 1250913 至少包括下列步驟： 備料步驟：準備加長之固定尺寸之空銅管i 〇 〇 (如第3 a 圖之步驟一 ”），該空銅管1〇〇之長度足以裁切成兩單元或 ' 兩單元以上之熱導管需求長度。 一次封口步驟：將空銅管1 〇 〇之一端1 〇 〇 a封口，及在 此封口端點焊（如第3 a圖之步驟二，，）。 塡粉步驟：先將一中心棒1 0 1定位在該銅管1 〇 〇內之中 心準位上，再將金屬粉102自該銅管10〇另一端l〇〇b充塡 Φ 入管內，使中心棒1 〇 1外周形成一均等厚度的金屬粉1 02層 (如第3 a圖之步驟三”）。 燒結步驟：將銅管100加熱，使該金屬粉102在銅管 1〇〇內壁形成一等厚的毛細層102’（如第3a圖之步驟四，，）， 冷卻後取出中心棒1 0 1形成一空心管道。 真空注液步驟：將銅管1 0 0內部抽真空，並注入熱傳介 質103 (如第3a圖之步驟五”），該熱傳介質103視熱導管 之用途及工作溫度而定，在本實施例中該熱傳介質1 03以水 # 作爲代表說明。 二次封口步驟··將該銅管100另一端100b封口並壓合， 完成熱導管半成品100’（如第3a圖之步驟六”）。 縮脖步驟：藉由模具104依客戶需要之尺寸在熱導管半 成品1 00 ’邊端以外之複數個定點上縮小管徑，例如以旋轉中 同時往中心方向相對移動之兩片式的模具1 〇4來局部縮小管 徑，形成複數個約10〜3 0mm的頸部105 (如第3b圖之步驟 七，，）。 -11- 1250913 定長步驟：將縮脖完成之熱導管半成品1 ο ο，加熱，使管 內之熱傳介質1 0 3成均壓、均溫及均濕之飽和態，及從該頸 部1〇5裁斷分離成複數段熱導管1〇〇，，並在裁斷處壓合及加 以點焊（如第3 b圖之步驟八”）。 塑型步驟：將裁斷之複數段熱導管100’依客戶需求之形 狀彎折或壓平，而完成熱導管成品100”（如第3b圖之步驟 九，，）。 根據本發明，前述兩實施例之製程中，從備料步驟至二 • 次封口步驟係先做成固定標準長度的熱導管半成品1 00，，然 後再依據客戶要求之規格將熱導管半成品1 00 ’進行縮脖步 、 驟至塑型步驟的後續加工，而製成熱導管成品1 00”。一般而 言’銅粉燒結式之熱導管從備料至半成品之製程耗時較長， 本發明以規格一致之銅管製造半成品，容易以自動化製程來 進行，不但簡化管控、提高良率與生產效率之外，並且以標 準的熱導管半成品因應客戶需求進行後續加工，可大幅縮短 交貨期。 # 根據本發明，上述熱導管半成品100’的後續製程中，係 在除了邊端以外之定點上進行縮小管徑加工，歸納該非邊端 縮脖加工製程之優點如下列： 1 )在已封口之熱導管除了邊端以外之定點上進行縮小管徑 加工，可避免直接碰觸封口端，其封口結構不會受到破 壞，能保持封口之良好密合性。 2 )在已封口之熱導管除了邊端以外之定點上進行縮小管徑 加工，僅需縮小約1 0〜3 Omm —小段距離即可，能節省工 !25〇9i3 時提高加工效率。 • 3 3 # &封口之熱導管除了邊端以外之定點上進行縮小管徑 . 加工’於銅管內部產生的銅粉屑量很小，並且易於排到 ®料端。 4 >如第二種加長型之實施例，在已封口之熱導管除了邊端 &外之定點上進行縮小管徑加工，複數段相鄰熱導管之 胃僅需要一個共同的縮小頸部，不但能簡化製程、減少 耗材’更可提高生產效率。 ^ &上僅爲本發明代表說明的較佳實施例，並不侷限本發 Μ實施範圍’即不偏離本發明申請專利範圍所作之均等變化 與修飾’應仍屬本發明之涵蓋範圍。 【圖式簡單說明】 第1圖爲習知技術，其顯示一種傳統熱導管製造方法之 流程方塊圖。 第la圖爲顯示第1圖傳統熱導管製造方法之製程示意 圖。 # 第lb圖爲接續第la圖之製程示意圖。 第2圖爲本發明熱導管之製造方法之流程方塊圖。 第2a圖爲顯示第2圖熱導管製造方法之製程示意圖。 第2b圖爲接續第2a圖之製程示意圖。 第3圖爲本發明熱導管之製造方法之另一種實施例之 流程方塊圖。 第3a圖爲顯不第3圖熱導管製造方法之製程示意圖。 第3 b圖爲接續第3 a圖之製程示意圖。 1250913 【主要元件符號說明 1 00 ... 銅管 1 0 (Γ…熱導管半成品 • 100”...熱導管成品 1 0 1 ... 中心棒 1 0 2 ... 金屬粉 1 02 5…毛細層 103.. .熱傳介質 1 〇 4 ...模具 105.. .頸部Under the demand, the heat density of electronic components is getting higher and higher, so the heat dissipation efficiency has become an important factor determining the stability of electronic products; because of the high heat transfer characteristics of heat pipes, it has become one of the widely used heat conduction components in electronic products. The heat pipe is mainly formed by a closed vacuum copper pipe in which a capillary layer is sintered on the inner wall thereof. The working fluid in the pipe absorbs a heat source (such as a CPU) at the evaporation end, and the vapor pressure of the heated end is increased. The lower pressure condensing end 'the vapor is condensed into a liquid at the condensation end (for example, by fins and fans, etc.) and is returned to the evaporation end by the capillary force of the capillary layer to form a closed cycle. The manufacturing method of the conventional heat pipe, such as the figures ^, ^ and ib, includes the following steps: Cutting the material according to the size required by the customer: preparing an empty copper tube (1〇) to a predetermined length (such as the first drawing) Step 1)) 1 0 a) Sealing, and here, and sealing step from the other end (l〇b): one end of the empty copper tube (end sealing of the sealing end (as in step 2 of Figure 1a) Powdering step: Position a center rod (丨丨) 1250913 Fill the metal powder (1 2 ) into the copper tube (1 ο ) (as in step 3 of Figure 1 a). Sintering step: copper tube (10) heating so that the metal powder (i 2 ) forms a capillary layer (1 2 ') on the inner wall of the copper tube (1 如) (as in step 4 of Figure 1). The center rod (1 1), the open end 1 〇b ' of the copper tube (10) is reduced by the mold (1 3 ) (as in Figure 1 a, step 5). Vacuum filling step · The inside of the copper tube (10) is evacuated and injected with the working fluid (14) (as in step 6 of Figure 1a). Secondary sealing step: the copper tube (10) is narrowed to the neck end (10b, )dense Seal and #压合 (such as step VII in Figure lb). Fixed length steps: Cut the copper tube (10) at both ends to the length required by the customer's size and spot weld the cut (eg Step 8 of Figure 1 b). Molding step: The copper pipe (10) of the determined length is bent or flattened according to the shape of the customer to complete the finished heat pipe (1 0 ') (such as 1 b) Step 9 of the figure, the above-mentioned conventional method is manufactured according to the customer's requirements in the predetermined length of the batch. The length of each batch in the process is different, the automated process is not easy to control, and the process ^ takes a long time, which not only affects In addition, for the copper powder sintered heat pipe, in the subsequent processing process, it is cut according to the length required by the customer, and the heat pipe must be kept during cutting. Airtightness, if the airtightness will destroy the function of the heat pipe, the sealed semi-finished heat pipe should be cut without breaking the airtightness. Usually, the cutting part should be reduced in diameter and then pressed and Cutting can ensure the cutting section Adhesion. In the above conventional process, the length must be determined first, and then step one is to push one end of the heat pipe into the rotating mold (1 3) to reduce the pipe diameter to the cutting point, and then vacuum injection. Liquid, secondary sealing, fixed length and shaping, so it is impossible to make semi-finished products in advance to meet the parent's delivery period. Perhaps, familiar with this technology, it is easy to think about it, take a length of the length of the length, pre-made as a heat pipe semi-finished product. According to the customer's demand size, the semi-finished products are processed from the edge of the neck to length, in order to improve the shortcomings of the traditional method; but from the above-mentioned conventional heat pipe process, the disadvantages of the inductive edge neck processing process are as follows: 1) The narrowing of the pipe diameter from the edge of any one of the mouth ends makes it easy to damage the sealing structure during the processing, which causes the heat pipe to fail. 2) If the length of the pipe is reduced from any end of the mouth, if it is necessary to cut a long length, it takes a long time to shrink the pipe to the cutting point and consume materials. 3) If the length of the pipe is reduced from any end of the mouth, if the length is required to be cut, the copper pipe is prone to bending deformation during the machining process, which affects the quality of the processing. 4) Reduce the diameter of the pipe from any end of the mouth. The longer the distance of the shrinkage pipe, the more copper dust is generated, and it is not easy to rule out that it will remain in the heat pipe and affect the thermal conductivity. SUMMARY OF THE INVENTION In view of the shortcomings of the conventional heat pipe process, the main object of the present invention is to provide a method for manufacturing a heat pipe, which is capable of improving production efficiency and drastically shortening delivery time, in addition to facilitating automated process and simplified management. For the above and other objects, the method for manufacturing the heat pipe of the present invention comprises at least the following steps: 1250913 Preparation step (Step 1): preparing a hollow copper tube of a fixed size. One sealing step (step two): Seal one end of the empty copper tube and weld it at the end of the sealing. Powdering step (Step 3): Position a center rod in the copper tube and fill the metal powder from the other end. Sintering step (Step 4) · The copper tube is heated to form a fine layer of metal powder on the inner wall of the copper tube, and then the center rod is taken out. Vacuum injection step (step 5): evacuate the inside of the copper tube and inject Φ heat transfer medium. Secondary sealing step (Step 6): The other end of the copper tube is sealed and pressed to complete the semi-finished product. The neck reduction step (step 7): the aperture is partially reduced at the fixed point of the semi-finished copper tube according to the size required by the customer. Fixed length step (step 8): Heat the semi-finished copper tube while cutting and spot welding at the neck. Molding step (Step 9): Bend or flatten the cut copper tube according to the shape of the customer's needs. According to the process of the present invention, steps 1 to 6 are first made into a fixed length of heat pipe semi-finished product, and steps 7 to 9 are followed by subsequent processing of the semi-finished product into a heat pipe finished product according to the specifications of the customer. In the case of copper powder sintered heat pipes, the process from preparation to semi-finished products takes a long time. Therefore, semi-finished products are manufactured from the specifications of the first-to-last beta copper tubes, in addition to facilitating automated processes, simplifying management, improving yield and production efficiency. And the standard heat pipe semi-finished products can be processed in accordance with the customer's needs, which can greatly shorten the delivery time. This is the main purpose of this is 1250913. According to the present invention, in the subsequent processing of the semi-finished product, the reduced diameter pipe diameter is processed at a fixed point other than the edge end of the sealed heat pipe, so as to avoid direct contact with the sealing end, the sealing structure is not damaged, and the sealing can be maintained. Good adhesion. Moreover, the shrinking neck processing method only needs to shrink the tube about i 〇~3 0mm for a small distance to 'can save man-hours and improve the processing efficiency; in addition, the amount of copper dust generated inside the copper tube during the neck narrowing process is very Small and easy to remove to the waste end. This is the second object of the invention. The embodiments of the present invention will be further described with reference to the embodiments, which are merely preferred examples and are not intended to limit the scope of the present invention. Get the best understanding. First, please refer to Figures 2 to 2b. According to the method for manufacturing a heat pipe according to the present invention, at least the following steps are included: Preparation step··Preparation of a fixed-size empty copper tube 1 0 0 (as in step 2 a) • Step 1 The empty copper tube 100 is typically larger than the length required by the customer. One sealing step: seal one end of the empty copper tube 1 〇 1 1 and seal the end of the sealing tube (as in step 2 of Figure 2 a). The powdering step: firstly positioning a center rod 101 at a center level in the copper tube 100, and then filling the metal powder 102 from the other end 100b of the copper tube 100 into the tube, so that the outer circumference of the center rod 101 forms an equal thickness. 102 layers of metal powder (as in step 2 of Figure 2a). Sintering step: heating the copper tube 100 so that the metal powder 102 forms an equal thickness of the capillary layer 102 on the inner wall of the copper tube 1250913 100 (as in step 4 of FIG. 2a), after cooling, the center rod 10 1 is taken out to form a Hollow pipe. Vacuum injection step: vacuuming the inside of the copper tube 100 and injecting the heat transfer medium 103 (step 5 of FIG. 2a), the heat transfer medium 103 depends on the use of the heat pipe and the operating temperature, in this embodiment The heat transfer medium 1 〇 3 is represented by water. Secondary sealing step: sealing and pressing the copper tube 1 〇 〇 the other end i 0 〇b to complete the heat pipe semi-finished product 1〇〇 (step 6 of Figure 2a). The neck-retracting step: the diameter of the tube is reduced at a fixed point other than the side end of the heat-conducting semi-finished product by the mold 104 according to the size of the customer's request, for example, a two-piece mold 104 which is relatively moved in the center direction while rotating. The diameter of the tube is reduced to form a neck 105 of about 10 to 30 mm (step 7 of Figure 2b). The fixed length step: the heat pipe semi-finished product completed by the neck is 10 〇, heated, so that the heat transfer medium in the tube is 10 0 into a pressure equalization state, a uniform temperature and a saturated state, and is cut from the neck 1 〇 5 Press fit and spot weld at this cut (as in step 8 of Figure 2b). Molding step: The cut heat pipe semi-finished product 100' is bent or flattened according to the shape of the customer, and the finished heat pipe 1000 is completed (as in step IX of Figure 2b). In addition, the third to third embodiments are another embodiment of the method for manufacturing a heat pipe according to the present invention. The difference in this embodiment is an elongated hollow copper tube, for example, sufficient to be cut into two units or more than two units. The empty copper tube of the size is first made into a standard length of heat pipe semi-finished product, and then the semi-finished product is processed into a finished heat pipe according to the specifications required by the customer. According to the manufacturing method of the embodiment, 1250913 includes at least the following steps: Preparation step: preparing an elongated fixed-size empty copper tube i 〇〇 (step 1 of FIG. 3 a), the length of the empty copper tube 1 〇〇 Sufficient length to cut into two units or more than two units of heat pipe. One sealing step: seal one end of the empty copper tube 1 〇〇a, and weld at the end of the seal (as shown in Figure 3a) Step 2,,). 塡 powder step: first position a center rod 1 0 1 at the center level of the copper tube 1 ,, and then the metal powder 102 from the copper tube 10 〇 the other end l 〇〇 b Fill the Φ into the tube, so that the outer circumference of the center rod 1 〇1 forms a layer of metal powder of equal thickness (step 3 of Figure 3a). Sintering step: heating the copper tube 100 to form an equal thickness capillary layer 102' on the inner wall of the copper tube 1 (as in step 4 of FIG. 3a), after cooling, the center rod 10 is taken out. 1 forms a hollow pipe. Vacuum injection step: vacuuming the inside of the copper tube 100 and injecting the heat transfer medium 103 (step 5 of FIG. 3a), the heat transfer medium 103 depending on the use of the heat pipe and the operating temperature, In the embodiment, the heat transfer medium 103 is represented by water #. Secondary sealing step · Sealing and pressing the other end 100b of the copper tube 100 to complete the heat pipe semi-finished product 100' (step 6 of Figure 3a) ). The neck-retracting step: the diameter of the tube is reduced by a plurality of fixed points other than the side of the hollow end of the heat-conducting semi-finished product by the mold 104, for example, a two-piece mold 1 which is relatively moved in the center direction while rotating. 4 to locally reduce the diameter of the tube to form a plurality of necks 105 of about 10 to 30 mm (step 7 of Figure 3b). -11- 1250913 Fixed-length step: heat the semi-finished product of the heat-conduit finished 1 ο ο, heat, so that the heat transfer medium in the tube is 10 0 into a pressure equalization state, a uniform temperature and a saturated state, and from the neck 1〇5 cutting into a plurality of sections of heat pipe 1〇〇, and pressing at the cutting point and spot welding (such as step 8 of Figure 3b). Molding step: cutting multiple sections of heat pipe 100' The heat pipe finished product 100" is completed by bending or flattening according to the shape of the customer's demand (as in step IX of Figure 3b). According to the present invention, in the process of the foregoing two embodiments, from the preparation step to the second sealing step, the heat pipe semi-finished product of the standard length is first made to be 100, and then the heat pipe semi-finished product is 100 00 according to the specifications required by the customer. The shrinking step and the subsequent processing of the molding step are performed to make the finished product of the heat pipe 100". Generally speaking, the process of the copper powder sintered heat pipe takes a long time from the preparation to the semi-finished product, and the specification of the invention is Consistent copper tubes for semi-finished products are easy to automate, simplifying control, improving yield and productivity, and standardizing the heat pipe semi-finished products for subsequent processing, which can significantly shorten lead times. According to the present invention, in the subsequent process of the heat pipe semi-finished product 100', the diameter reduction processing is performed at a fixed point other than the edge end, and the advantages of the non-edge end neck processing process are summarized as follows: 1) The heat pipe which has been sealed In addition to the narrowing of the pipe diameter at a fixed point other than the edge, it can avoid direct contact with the sealing end, and the sealing structure will not be damaged. Maintain good sealing of the seal. 2) Reduce the diameter of the pipe at the fixed point except the edge of the sealed heat pipe, only need to reduce the distance by about 10~3 Omm - a small distance can save labor! 25〇 9i3 improves processing efficiency. • 3 3 # & Sealed heat pipe reduces the diameter of the pipe at a fixed point other than the edge. The machining process produces a small amount of copper dust inside the copper pipe and is easy to discharge to the material end. 4 > As in the second lengthened embodiment, the reduced heat pipe is processed at a fixed point other than the edge & the stomach of the adjacent heat pipe of the plurality of segments only needs a common neck narrowing. Not only can the process be simplified, but the consumables can be reduced, and the production efficiency can be improved. ^ & is only a preferred embodiment described by the representative of the present invention, and is not limited to the scope of the present invention, that is, it does not deviate from the scope of the patent application scope of the present invention. Variations and modifications 'should still fall within the scope of the present invention. [Schematic Description of the Drawings] Figure 1 is a flow diagram of a conventional heat pipe manufacturing method, showing a conventional block diagram. Schematic diagram of the process of manufacturing the heat pipe. #图 lb is a schematic diagram of the process of connecting the first drawing. Fig. 2 is a block diagram of the manufacturing method of the heat pipe of the present invention. Fig. 2a is a diagram showing the manufacturing method of the heat pipe of Fig. 2. 2b is a flow chart of another embodiment of the method for manufacturing the heat pipe of the present invention. Fig. 3a is a diagram showing the heat pipe manufacturing method of the third drawing. Schematic diagram of the process. Fig. 3b is a schematic diagram of the process of connecting Fig. 3a. 1250913 [Main component symbol description 1 00 ... copper tube 1 0 (Γ...heat pipe semi-finished product • 100"...heat pipe finished product 1 0 1 ... center bar 1 0 2 ... metal powder 1 02 5... capillary layer 103.. heat transfer medium 1 〇 4 ... mold 105.. . neck