TWI802848B - Forging method of standpipe - Google Patents

Forging method of standpipe Download PDF

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TWI802848B
TWI802848B TW110105631A TW110105631A TWI802848B TW I802848 B TWI802848 B TW I802848B TW 110105631 A TW110105631 A TW 110105631A TW 110105631 A TW110105631 A TW 110105631A TW I802848 B TWI802848 B TW I802848B
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forging
pipe
diameter
tap
end surface
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TW110105631A
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TW202233328A (en
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陳俊宏
陳垂雍
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陳俊宏
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Abstract

一種豎管之鍛造方法，依序利用第一鍛抽設備以及第二鍛抽設備將管材進行二段式鍛抽作業，以獲得二段式形變的豎管成品，除了將豎管成品的整體長度延長之外，豎管成品之外周面也具有較佳的薄度。 A forging method for a vertical pipe, which sequentially utilizes the first forging equipment and the second forging equipment to perform two-stage forging and drawing operations on the pipe to obtain a two-stage deformed vertical pipe product. In addition to changing the overall length of the vertical pipe product In addition to elongation, the outer peripheral surface of the finished standpipe also has better thinness.

Description

豎管之鍛造方法 Forging method of standpipe

本發明為一種豎管之鍛造方法，尤指一種依序透過第一鍛抽設備以及第二鍛抽設備進行加工的鍛造方法。 The invention relates to a forging method of a vertical pipe, especially a forging method in which the first forging equipment and the second forging equipment are sequentially processed.

習用揭露一種鋁合金管件的鍛抽方法： Conventionally discloses a forging and drawing method of aluminum alloy pipe fittings:

步驟A、首先將中空柱狀的原材料加工形成胚材，並將胚材延軸線延伸形成第一端面、沿著軸線相反於第一端面的第二端面，以及連接第一端面與第二端面的外周面，第一端面與第二端面之間形成原始長度。 Step A, first process the hollow columnar raw material to form a blank material, and extend the blank material along the axis to form a first end surface, a second end surface opposite to the first end surface along the axis, and a connection between the first end surface and the second end surface On the outer peripheral surface, an original length is formed between the first end surface and the second end surface.

步驟B、將胚材進行均質退火，將胚材加熱至410~510℃之後隨爐冷卻，以每小時爐內溫度下降10℃，冷卻至200~160℃時出爐。 Step B: Perform homogeneous annealing on the embryo material, heat the embryo material to 410-510°C and then cool it with the furnace, drop the temperature in the furnace by 10°C per hour, and release it when it is cooled to 200-160°C.

步驟C、檢測胚材的洛氏硬度標尺HRF的硬度值為60±5度。 Step C, detecting the hardness value of the Rockwell hardness scale HRF of the embryo material is 60±5 degrees.

步驟D、將胚材浸漬於潤滑液槽中，潤滑液槽中盛放的潤滑液游離總酸度為重量百分比濃度40~50%，工作溫度80~100℃，浸漬預定時間。 Step D, immerse the embryo material in a lubricating liquid tank, the free total acidity of the lubricating liquid contained in the lubricating liquid tank is 40-50% by weight, the working temperature is 80-100°C, and the soaking time is predetermined.

步驟E、進行鍛抽作業，將已浸漬過潤滑液的胚材放置於鍛抽模中，並且操作鍛抽頭相對於鍛抽模趨近，將胚材受鍛抽頭與鍛抽模的鍛抽作用而形成成品，成品沿著軸線呈中空管狀，並具有相交於軸線的第一側面、沿著軸向相反第一側面的第二側面，連著第一側面與第二側面的外環面，以及相反於外環面且圍繞周線可形成內孔的內環面，第一側面與 第二側面之間形成大於原始長度的延伸長度。 Step E, carry out the forging and drawing operation, place the blank material impregnated with the lubricating liquid in the forging drawing die, and operate the forging tap to approach the forging drawing die, and the blank material is subjected to the forging and drawing action of the forging tap and the forging drawing die And forming a finished product, the finished product is hollow tubular along the axis, and has a first side intersecting the axis, a second side along the axially opposite first side, an outer ring surface connecting the first side and the second side, and Opposite the outer annulus and around the inner annulus forming an inner hole around the circumference, the first side and An extended length greater than the original length is formed between the second sides.

藉由上述方法，利用冷鍛作業製得成品，可以節省能源、減少模具消耗以及降低整體製造成本；然而，習用技術僅有揭露單次加工胚材的鍛抽作業，鍛抽頭以及鍛抽模單次加工的胚材長度以及表面有限，僅能進行簡單加工。 By the above method, cold forging is used to make finished products, which can save energy, reduce mold consumption and reduce overall manufacturing costs; however, the conventional technology only discloses the forging and drawing operations of a single processing blank, forging taps and forging drawing orders The length and surface of the blank material for secondary processing are limited, and only simple processing can be performed.

本發明揭露一種豎管之鍛造方法，包含下列步驟： The invention discloses a forging method of a standpipe, which includes the following steps:

步驟1. 取得經退火熱處理及表面潤滑的一管材、一第一鍛抽設備以及一第二鍛抽設備，該管材為無縫隙且一體成形，該管材延著軸線延伸，並具有相交於上述軸線的一第一端面，以及與該第一端面相互平行的一第二端面，該第一端面與該第二端面之間連接一外周面，該第一端面具有一第一直徑，該第二端面具有一第二直徑，該管材中心具有一貫孔，該第一鍛抽設備包括一第一鍛抽模以及對應該第一鍛抽模的一第一鍛抽頭，該第一鍛抽頭一端具有呈等徑的一第一凸部，該第一凸部之直徑小於該貫孔的直徑，該第二鍛抽設備包括一第二鍛抽模以及對應該第二鍛抽模的一第二鍛抽頭，該第二鍛抽頭一端具有一第二凸部，該第二凸部由一漸縮段延伸一等徑段而成，該漸縮段的最小直徑等於該等徑段的直徑，該等徑段與該第一凸部的長度及直徑均相等。 Step 1. Obtain a pipe material that has been annealed, heat-treated and surface lubricated, a first forging device, and a second forging device. The pipe material is seamless and integrally formed. The pipe material extends along the axis and has a a first end surface, and a second end surface parallel to the first end surface, an outer peripheral surface is connected between the first end surface and the second end surface, the first end surface has a first diameter, and the second end surface It has a second diameter, and the center of the pipe has a through hole. The first forging device includes a first forging die and a first forging tap corresponding to the first forging die. One end of the first forging tap has a shape of a diameter of a first protrusion, the diameter of the first protrusion is smaller than the diameter of the through hole, the second forging equipment includes a second forging die and a second forging tap corresponding to the second forging die, One end of the second forging tap has a second convex portion, the second convex portion is formed by extending a tapered section and an equal-diameter section, the minimum diameter of the tapered section is equal to the diameter of the equal-diameter section, and the equal-diameter section It is equal to the length and diameter of the first protrusion.

步驟2. 將該管材放置於該第一鍛抽模內，且該第二端面係朝向該第一鍛抽模的方向進行放置，該第一鍛抽頭之該第一凸部穿伸至該管材之該貫孔。 Step 2. Place the pipe in the first forging die, and place the second end face in the direction of the first forging die, and the first protrusion of the first forging tap extends to the pipe It should be pierced.

步驟3. 施力於該第一鍛抽頭用以加壓該管材之該第一端 面，使該管材鄰近該第二端面之該外周面以及該第二端面產生第一階段的形變，使該第二直徑小於該第一直徑，抽出該第一鍛抽頭，使該第一鍛抽頭之該第一凸部脫離該管材之該貫孔，接著將該管材經退火熱處理及表面潤滑。 Step 3. Apply force to the first swage to pressurize the first end of the tubing surface, make the outer peripheral surface of the pipe adjacent to the second end surface and the second end surface produce the first-stage deformation, make the second diameter smaller than the first diameter, pull out the first forging tap, and make the first forging tap The first protrusion is separated from the through hole of the pipe, and then the pipe is subjected to annealing heat treatment and surface lubrication.

步驟4. 將步驟3處理過的該管材放置於該第二鍛抽模內，且該第二端面係朝向該第二鍛抽模的方向進行放置，該第二鍛抽頭之該第二凸部穿伸至該管材之該貫孔。 Step 4. Place the pipe processed in step 3 in the second forging die, and place the second end face in the direction of the second forging die, and place the second convex part of the second forging tap Extend to the through hole of the pipe.

步驟5. 施力於該第二鍛抽頭用以加壓該管材之該第一端面，使該管材之該外周面受推擠而產生第二階段的形變，該外周面整體厚度變薄，並形成漸縮式的錐面，接著抽出該第二鍛抽頭，使該第二鍛抽頭之該第二凸部脫離該管材之該貫孔，即完成一豎管成品。 Step 5. Apply force to the second forging tap to pressurize the first end surface of the pipe, so that the outer peripheral surface of the pipe is pushed to produce a second stage of deformation, the overall thickness of the outer peripheral surface becomes thinner, and A tapered tapered surface is formed, and then the second forging tap is pulled out, so that the second protrusion of the second forging tap is separated from the through hole of the pipe, and a vertical pipe is completed.

藉由上述步驟，本發明揭露一種豎管之鍛造方法，透過將該管材依序經由該第一鍛抽設備以及該第二鍛抽設備的鍛抽作業，以獲得二段式形變的該豎管成品，除了將該豎管成品的長度延長之外，該豎管成品之該外周面也具有較佳的薄度。 Through the above-mentioned steps, the present invention discloses a forging method of a vertical pipe, by sequentially passing the pipe material through the forging operation of the first forging equipment and the second forging equipment, to obtain the vertical pipe deformed in two stages In the finished product, in addition to extending the length of the finished vertical pipe, the outer peripheral surface of the finished vertical pipe also has a better thickness.

S1:步驟1 S1: Step 1

S2:步驟2 S2: Step 2

S3:步驟3 S3: step 3

S4:步驟4 S4: Step 4

S5:步驟5 S5: Step 5

10:管材 10: pipe

101:豎管成品 101: Finished standpipe

11:第一端面 11: The first end face

111:第一直徑 111: first diameter

12:第二端面 12: Second end face

121:第二直徑 121: second diameter

13:外周面 13: Outer peripheral surface

131:第一外周面 131: the first outer peripheral surface

132:漸縮外周面 132: tapered peripheral surface

133:第二外周面 133: the second outer peripheral surface

14:貫孔 14: Through hole

20:第一鍛抽設備 20: The first forging equipment

21:第一鍛抽模 21: The first forging die drawing

22:第一鍛抽頭 22: The first forging tap

221:第一凸部 221: The first convex part

30:第二鍛抽設備 30: Second forging and pumping equipment

31:第二鍛抽模 31: Second forging die drawing

32:第二鍛抽頭 32: The second forging tap

321:第二凸部 321: second convex part

322:漸縮段 322: tapering segment

323:等徑段 323: equal diameter section

〔圖1〕為本發明之鍛造方法的步驟流程圖。 [Fig. 1] is a flowchart of the steps of the forging method of the present invention.

〔圖2〕為本發明之第一鍛抽設備與管材的立體剖面及分解示意圖。 [Fig. 2] is a three-dimensional section and an exploded schematic view of the first forging equipment and pipes of the present invention.

〔圖3〕為本發明之管材放置於第一鍛抽設備的剖面示意圖。 [Fig. 3] is a schematic cross-sectional view of the pipe of the present invention placed in the first forging equipment.

〔圖4〕為本發明之管材透過第一鍛抽頭加工的剖面示意圖。 [Fig. 4] is a schematic cross-sectional view of the pipe of the present invention processed through the first forging tap.

〔圖5〕為本發明之管材放置於第二鍛抽設備的剖面示意圖。 [Fig. 5] is a schematic cross-sectional view of the pipe of the present invention placed in the second forging and drawing equipment.

〔圖6〕為本發明之管材透過第二鍛抽頭加工的剖面示意圖。 [Fig. 6] is a schematic cross-sectional view of the pipe of the present invention processed through the second forging tap.

〔圖7〕為本發明之豎管成品的立體示意圖。 [Fig. 7] is a three-dimensional schematic view of the finished vertical pipe of the present invention.

本發明揭露一種豎管之鍛造方法，包含下列步驟： The invention discloses a forging method of a standpipe, which includes the following steps:

參閱圖1~圖6，步驟1 S1揭露取得經退火熱處理及表面潤滑的一管材10、一第一鍛抽設備20以及一第二鍛抽設備30，該管材10為無縫隙且一體成形，步驟1的該管材10之外徑為35~50±0.1mm，內徑為20~30±0.1mm，該管材10延著軸線延伸，並具有相交於上述軸線的一第一端面11，以及與該第一端面11相互平行的一第二端面12，該第一端面11與該第二端面12之間連接一外周面13，該第一端面11具有一第一直徑111，該第二端面12具有一第二直徑121，該管材10中心具有一貫孔14，該第一鍛抽設備20包括一第一鍛抽模21以及對應該第一鍛抽模21的一第一鍛抽頭22，該第一鍛抽頭22一端具有呈等徑的一第一凸部221，該第一凸部221之直徑小於該貫孔14的直徑，該第二鍛抽設備30包括一第二鍛抽模31以及對應該第二鍛抽模31的一第二鍛抽頭32，該第二鍛抽頭32一端具有一第二凸部321，該第二凸部321由一漸縮段322延伸一等徑段323而成，該漸縮段322的最小直徑等於該等徑段323的直徑，該第二鍛抽頭32之該等徑段323與該第一鍛抽頭22之該第一凸部221的長度及直徑均相等；上述退火熱處理係為先將該管材10加熱至380~450℃後進行保溫8~12小時，接著再透過爐冷以每小時降低10~20℃直至溫度到230℃後出爐進行空冷，此時的該管材10檢測導電度(EC值)為40~70，由於導電度與硬度值係呈線性正比，故使用導電度可間接測試該管材10硬度，且又不會破壞該管材10的結構。 Referring to Figures 1 to 6, step 1 S1 discloses obtaining a pipe 10, a first forging equipment 20 and a second forging equipment 30 after annealing heat treatment and surface lubrication, the pipe 10 is seamless and integrally formed, step The outer diameter of the pipe 10 in 1 is 35~50±0.1mm, the inner diameter is 20~30±0.1mm, the pipe 10 extends along the axis, and has a first end surface 11 intersecting the above axis, and with the The first end surface 11 is parallel to a second end surface 12, an outer peripheral surface 13 is connected between the first end surface 11 and the second end surface 12, the first end surface 11 has a first diameter 111, and the second end surface 12 has A second diameter 121, the pipe 10 has a through hole 14 in the center, the first forging equipment 20 includes a first forging die 21 and a first forging tap 22 corresponding to the first forging die 21, the first One end of the forging tap 22 has a first protruding portion 221 with an equal diameter. The diameter of the first protruding portion 221 is smaller than the diameter of the through hole 14. The second forging and drawing device 30 includes a second forging and drawing die 31 and corresponding A second forging tap 32 of the second forging die 31, one end of the second forging tap 32 has a second convex portion 321, the second convex portion 321 is formed by extending a tapered section 322 to an equal diameter section 323, The minimum diameter of the tapered section 322 is equal to the diameter of the equal-diameter section 323, and the length and diameter of the equal-diameter section 323 of the second forging tap 32 and the first protrusion 221 of the first forging tap 22 are equal; The above-mentioned annealing heat treatment system is to first heat the pipe 10 to 380-450°C and then keep it warm for 8-12 hours, and then cool it through the furnace to lower it by 10-20°C per hour until the temperature reaches 230°C and then take it out of the furnace for air cooling. The electrical conductivity (EC value) of the pipe 10 is 40-70. Since the electrical conductivity is linearly proportional to the hardness value, the hardness of the pipe 10 can be indirectly tested by using the electrical conductivity without damaging the structure of the pipe 10 .

參閱圖3並搭配圖1及圖2，步驟2 S2揭露將該管材10放置於該第一鍛抽模21內，且該第二端面12係朝向該第一鍛抽模21的方向進行放置，該第一鍛抽頭22之該第一凸部221穿伸至該管材10之該貫孔14。 Referring to Fig. 3 together with Fig. 1 and Fig. 2, step 2 S2 discloses that the pipe 10 is placed in the first forging die 21, and the second end surface 12 is placed in the direction of the first forging die 21, The first protrusion 221 of the first forging tap 22 extends to the through hole 14 of the pipe 10 .

參閱圖4並搭配圖1及圖2，步驟3 S3揭露施力於該第一鍛抽頭22用以加壓該管材10之該第一端面11，使該管材10鄰近該第二端面12之該外周面13以及該第二端面12產生第一階段的形變，使該第二直徑121小於該第一直徑111，抽出該第一鍛抽頭22，使該第一鍛抽頭22之該第一凸部221脫離該管材10之該貫孔14，接著將該管材10經退火熱處理及表面潤滑；上述退火熱處理係為先將該管材10加熱至230~400℃後進行保溫4~12小時，接著再透過爐冷以每小時降低10~20℃直至溫度到230℃後出爐進行空冷，此時的該管材10檢測導電度(EC值)為40~70，由於導電度與硬度值係呈線性正比，故使用導電度可間接測試該管材10硬度，且又不會破壞該管材10的結構。 Referring to FIG. 4 together with FIG. 1 and FIG. 2 , step 3 S3 discloses applying force to the first forging tap 22 to pressurize the first end face 11 of the pipe 10 so that the pipe 10 is adjacent to the second end face 12 The outer peripheral surface 13 and the second end surface 12 produce the first-stage deformation, so that the second diameter 121 is smaller than the first diameter 111, and the first forging tap 22 is pulled out so that the first convex portion of the first forging tap 22 221 is separated from the through hole 14 of the pipe 10, and then the pipe 10 is subjected to annealing heat treatment and surface lubrication; the above annealing heat treatment is to first heat the pipe 10 to 230~400°C and then keep it warm for 4~12 hours, and then pass through The furnace is cooled by 10~20°C per hour until the temperature reaches 230°C and then air-cooled. At this time, the conductivity (EC value) of the pipe 10 is 40~70. Since the conductivity is linearly proportional to the hardness value, it is The hardness of the pipe 10 can be tested indirectly by using the electrical conductivity without damaging the structure of the pipe 10 .

參閱圖5並搭配圖1，步驟4 S4揭露將步驟3處理過的該管材10放置於該第二鍛抽模31內，且該第二端面12係朝向該第二鍛抽模31的方向進行放置，該第二鍛抽頭32之該第二凸部321穿伸至該管材10之該貫孔14。 Referring to FIG. 5 together with FIG. 1, step 4 S4 discloses that the pipe 10 processed in step 3 is placed in the second forging die 31, and the second end surface 12 is directed toward the second forging die 31. Placed, the second protrusion 321 of the second forging tap 32 penetrates to the through hole 14 of the pipe 10 .

參閱圖6、圖7並搭配圖1，步驟5 S5揭露施力於該第二鍛抽頭用32以加壓該管材10之該第一端面11，使該管材10之該外周面13受推擠而產生第二階段的形變，該外周面13整體厚度變薄，並形成漸縮式的錐面，接著抽出該第二鍛抽頭32，使該第二鍛抽頭32之該第二凸部321脫離該管材10之該貫孔14，即完成一豎管成品101。 Referring to Fig. 6 and Fig. 7 together with Fig. 1, step 5 S5 discloses applying force to the second forging tap 32 to pressurize the first end surface 11 of the pipe material 10, so that the outer peripheral surface 13 of the pipe material 10 is pushed And the deformation of the second stage occurs, the overall thickness of the outer peripheral surface 13 becomes thinner, and forms a tapered tapered surface, and then the second forging tap 32 is pulled out to disengage the second convex portion 321 of the second forging tap 32 The through hole 14 of the pipe material 10 completes a vertical pipe product 101 .

上述之該管材10進行加工時會先檢查該外周面13之最大粗糙度的Rz值為0.2um，該管材10重量為200~600g，該管材10重量之誤差值為+5g，該管材10之同心度公差小於±0.1mm。 When the above-mentioned pipe 10 is processed, it will first check that the Rz value of the maximum roughness of the outer peripheral surface 13 is 0.2um. The weight of the pipe 10 is 200~600g. The concentricity tolerance is less than ±0.1mm.

參閱圖7，揭露一種豎管，包括一豎管成品101，該豎管成品101中心貫設一貫孔14，該豎管成品101延著軸線延伸，並具有相交於上述軸線的一第一端面11，以及與該第一端面11相互平行的一第二端面12，該第一端面11具有一第一直徑111，該第二端面12具有一第二直徑121，該第一直徑111大於該第二直徑121，該第一端面11與該第二端面12之間連接一外周面13，該外周面13為一第一外周面131、一漸縮外周面132及一第二外周面133相連接而成，該第一外周面131連接該第一端面11，該漸縮外周面132兩端分別連接該第一外周面131以及該第二外周面133，且該漸縮外周面132係朝向該第二端面12呈漸縮，該第二外周面133連接該第二端面12，該第一外周面131的徑向剖面直徑係大於該第二外周面133的徑向剖面直徑，該第一外周面131的徑向剖面直徑大於等於該漸縮外周面132的徑向剖面直徑，該漸縮外周面132的徑向剖面直徑係大於等於該第二端面12之徑向剖面直徑。 Referring to Fig. 7, a vertical pipe is disclosed, which includes a vertical pipe finished product 101, a through hole 14 is formed in the center of the vertical pipe finished product 101, the vertical pipe finished product 101 extends along the axis, and has a first end surface 11 intersecting the above-mentioned axis , and a second end face 12 parallel to the first end face 11, the first end face 11 has a first diameter 111, the second end face 12 has a second diameter 121, the first diameter 111 is larger than the second Diameter 121, an outer peripheral surface 13 is connected between the first end surface 11 and the second end surface 12, and the outer peripheral surface 13 is connected by a first outer peripheral surface 131, a tapered outer peripheral surface 132 and a second outer peripheral surface 133. In this way, the first outer peripheral surface 131 is connected to the first end surface 11, the two ends of the tapered outer peripheral surface 132 are respectively connected to the first outer peripheral surface 131 and the second outer peripheral surface 133, and the tapered outer peripheral surface 132 is directed towards the second outer peripheral surface 132. The two end surfaces 12 are tapered, the second outer peripheral surface 133 is connected to the second end surface 12, the radial cross-sectional diameter of the first outer peripheral surface 131 is larger than the radial cross-sectional diameter of the second outer peripheral surface 133, and the first outer peripheral surface The radial cross-sectional diameter of 131 is greater than or equal to the radial cross-sectional diameter of the tapered outer peripheral surface 132 , and the radial cross-sectional diameter of the tapered outer peripheral surface 132 is greater than or equal to the radial cross-sectional diameter of the second end surface 12 .

需注意的是，上述實施例僅為例示性說明本發明之原理及其功效，而非用於限制本發明之範圍。任何熟於此項技術之人均可在不違背本發明之技術原理及精神下，對實施例作修改與變化。因此本發明之權利保護範圍應如後述之申請專利範圍所述。 It should be noted that the above-mentioned embodiments are only illustrative to illustrate the principles and effects of the present invention, and are not intended to limit the scope of the present invention. Anyone who is familiar with this technology can modify and change the embodiments without violating the technical principle and spirit of the present invention. Therefore, the protection scope of the present invention should be described in the scope of patent application described later.

S1:步驟1 S1: Step 1

S2:步驟2 S2: Step 2

S3:步驟3 S3: step 3

S4:步驟4 S4: Step 4

S5:步驟5 S5: Step 5

Claims (6)

一種豎管之鍛造方法，包含下列步驟：步驟1. 取得經退火熱處理及表面潤滑的一管材、一第一鍛抽設備以及一第二鍛抽設備，該管材為無縫隙且一體成形，該管材延著軸線延伸，並具有相交於上述軸線的一第一端面，以及與該第一端面相互平行的一第二端面，該第一端面與該第二端面之間連接一外周面，該第一端面具有一第一直徑，該第二端面具有一第二直徑，該管材中心具有一貫孔，該第一鍛抽設備包括一第一鍛抽模以及對應該第一鍛抽模的一第一鍛抽頭，該第一鍛抽頭一端具有呈等徑的一第一凸部，該第一凸部之直徑小於該貫孔的直徑，該第二鍛抽設備包括一第二鍛抽模以及對應該第二鍛抽模的一第二鍛抽頭，該第二鍛抽頭一端具有一第二凸部，該第二凸部由一漸縮段延伸一等徑段而成，該漸縮段的最小直徑等於該等徑段的直徑，該等徑段與該第一凸部的長度及直徑均相等；步驟2. 將該管材放置於該第一鍛抽模內，且該第二端面係朝向該第一鍛抽模的方向進行放置，該第一鍛抽頭之該第一凸部穿伸至該管材之該貫孔；步驟3. 施力於該第一鍛抽頭用以加壓該管材之該第一端面，使該管材鄰近該第二端面之該外周面以及該第二端面產生第一階段的形變，使該第二直徑小於該第一直徑，抽出該第一鍛抽頭，使該第一鍛抽頭之該第一凸部脫離該管材之該貫孔，接著將該管材經退火熱處理及表面潤滑；步驟4. 將步驟3處理過的該管材放置於該第二鍛抽模內，且該第二端面係朝向該第二鍛抽模的方向進行放置，該第二鍛抽頭之該第二凸部穿伸至該管材之該貫孔；步驟5. 施力於該第二鍛抽頭用以加壓該管材之該第一端面，使該管材之該外周面受推擠而產生第二階段的形變，該外周面整體厚度變薄，並形成漸縮式的錐面，接著抽出該第二鍛抽頭，使該第二鍛抽頭之該第二凸部脫離該管材之該貫孔，即完成一豎管成品。 A forging method for a vertical pipe, comprising the following steps: Step 1. Obtain a pipe, a first forging device and a second forging device that have been annealed and heat-treated and surface-lubricated, the pipe is seamless and integrally formed, the pipe Extending along the axis, and having a first end surface intersecting the above-mentioned axis, and a second end surface parallel to the first end surface, an outer peripheral surface is connected between the first end surface and the second end surface, the first end surface The end surface has a first diameter, the second end surface has a second diameter, and the center of the pipe has a through hole. The first forging equipment includes a first forging die and a first forging die corresponding to the first forging die. Tap, one end of the first forging tap has a first protrusion with an equal diameter, the diameter of the first protrusion is smaller than the diameter of the through hole, the second forging equipment includes a second forging die and corresponding to the first A second forging tap of the second forging drawing die, one end of the second forging tap has a second convex portion, the second convex portion is formed by extending a tapered section and an equal diameter section, the minimum diameter of the tapered section is equal to The diameter of the equal-diameter section, the length and diameter of the equal-diameter section and the first protrusion are equal; Step 2. Place the pipe in the first forging die, and the second end face is facing the first Place it in the direction of the forging die, and the first protrusion of the first forging tap penetrates to the through hole of the pipe; Step 3. Apply force to the first forging tap to pressurize the first forging tap. end face, make the outer peripheral surface of the pipe adjacent to the second end face and the second end face produce the first-stage deformation, make the second diameter smaller than the first diameter, extract the first forging tap, and make the first forging tap The first convex part of the pipe is separated from the through hole of the pipe, and then the pipe is subjected to annealing heat treatment and surface lubrication; step 4. The pipe processed in step 3 is placed in the second forging die, and the second The end face is placed towards the direction of the second forging die, and the second protrusion of the second forging tap penetrates to the through hole of the pipe; Step 5. Apply force to the second forging tap for pressurization The first end surface of the pipe material pushes the outer peripheral surface of the pipe material to produce a second-stage deformation, the overall thickness of the outer peripheral surface becomes thinner, and a tapered tapered surface is formed, and then the second forging tap is drawn out , the second protrusion of the second forging tap is separated from the through hole of the pipe, and a vertical pipe product is completed. 如請求項1之豎管之鍛造方法，其中步驟1之退火熱處理係 為先將該管材加熱至380~450℃後進行保溫8~12小時，接著再透過爐冷以每小時降低10~20℃直至溫度到230℃後出爐進行空冷，此時的該管材檢測導電度(EC值)為40~70。 The forging method of the standpipe as claimed in item 1, wherein the annealing heat treatment in step 1 is First heat the pipe to 380~450°C and keep it warm for 8~12 hours, then cool it down by 10~20°C per hour until the temperature reaches 230°C, then take it out of the furnace for air cooling. At this time, the pipe is tested for electrical conductivity (EC value) is 40~70. 如請求項1之豎管之鍛造方法，其中步驟3之退火熱處理係為先將該管材加熱至230~400℃後進行保溫4~12小時，接著再透過爐冷以每小時降低10~20℃直至溫度到230℃後出爐進行空冷，此時的該管材檢測導電度(EC值)為40~70。 Such as the forging method of vertical pipe in claim 1, wherein the annealing heat treatment in step 3 is to first heat the pipe to 230~400°C and then keep it warm for 4~12 hours, and then cool it through the furnace to lower the temperature by 10~20°C per hour After the temperature reaches 230°C, it is taken out of the furnace for air cooling. At this time, the detected electrical conductivity (EC value) of the pipe is 40~70. 如請求項1之豎管之鍛造方法，其中該管材進行加工時會先檢查該外周面之最大粗糙度的Rz值為0.2um，該管材重量為200~600g，該管材重量之誤差值為+5g。 Such as the forging method of the vertical pipe in claim item 1, wherein when the pipe is processed, the Rz value of the maximum roughness of the outer peripheral surface is 0.2um, the weight of the pipe is 200~600g, and the error value of the pipe weight is + 5g. 如請求項1之豎管之鍛造方法，其中步驟1的該管材之外徑為35~50±0.1mm，內徑為20~30±0.1mm。 The forging method of the vertical pipe as claimed in item 1, wherein the outer diameter of the pipe in step 1 is 35~50±0.1mm, and the inner diameter is 20~30±0.1mm. 如請求項5之豎管之鍛造方法，其中該管材之同心度公差為±0.1mm。 The forging method of the vertical pipe as claimed in item 5, wherein the concentricity tolerance of the pipe is ±0.1mm.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104826890A (en) * 2015-05-09 2015-08-12 山西太钢不锈钢股份有限公司 Manufacturing method of super austenitic stainless steel seamless tube
KR20170061731A (en) * 2015-11-26 2017-06-07 주식회사 세림티앤디 Vehicle Brake Chamber Push Rod Frging Producing Method and Mold
TW202037421A (en) * 2019-04-09 2020-10-16 金允成企業股份有限公司 Forging-drawing forming method for aluminum alloy pipe fitting
WO2020253550A1 (en) * 2019-06-18 2020-12-24 常熟希那基汽车零件有限公司 Novel hollow shaft manufacturing method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104826890A (en) * 2015-05-09 2015-08-12 山西太钢不锈钢股份有限公司 Manufacturing method of super austenitic stainless steel seamless tube
KR20170061731A (en) * 2015-11-26 2017-06-07 주식회사 세림티앤디 Vehicle Brake Chamber Push Rod Frging Producing Method and Mold
TW202037421A (en) * 2019-04-09 2020-10-16 金允成企業股份有限公司 Forging-drawing forming method for aluminum alloy pipe fitting
WO2020253550A1 (en) * 2019-06-18 2020-12-24 常熟希那基汽车零件有限公司 Novel hollow shaft manufacturing method

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