TW495396B - Method for manufacturing seamless aluminium pipes - Google Patents

Abstract

A die set for producing a variety of seamless aluminum and aluminum alloy pipes, includes a charging die (1) and forming die (2), characterized in that, the guide-in portion (1-1) of the charging die (1) is provided thereon with a divided extrusion charge port (1-4) having an oblique angle alpha of 30 to 35 degrees, a tapering section (1-2) with a tapering angle beta of 7 to 8 degrees at a center segment thereof, and a column end segment (1-3). The forming die (2) includes a right-side annular aperture segment (2-1) having a left side engaging the left side of the guide-in segment (1-1), and a center tapering aperture segment (2-2) having a tapering aperture with a tapering angle gamma of 9 to 10 degrees, and a left side column aperture segment (2-3). Using such a die set on a horizontal, single actuating extrusion machine, a variety of seamless aluminum and aluminum alloy pipes of a high passing rate may be produced directly while reducing the manufacturing cost.

Description

V. Description of the invention α) The present invention relates to Minghe extruder for producing various kinds of aluminum. At present, the single-action extruder produced by various dynamic extruders in the world is heated by the south mold and the rod holes are divided into blocks and semi-solid. The design of the shunt hole of the welded pipe material enters into the mold cavity. When it is shunted and welded, the congenital welding line is a permanent welding line. Then, the pipe is taken out with an alkaline chemical solution and washed with water. The vertical welding line is clearly symbolized as shown in Figure 1. This kind of seamed pipe cannot stand the tensile strength and cracking. This means that there are seams to make seam pipes in special industries. For example, light weight, food, aerospace industry various inscriptions and alloys, various gold hot-extrusion collars, and the combination of gold beneficial aluminum and aluminum alloy 'the largest design in the design of the extruder Shao and I Lu' Figure 1 When the material is shown, it cannot be eliminated between the tube walls divided by the holes. The method is to first warm the tube to 70 ° C ~ clean, the tube is clearly visible, or #inch is about horizontal single moving joints. Official material method and corresponding mold. The reason why gold seamless pipes cannot be left to rest is because ... alloy = shown in Figure 3, during extrusion, G is divided by the straight feed of Figure 3 and the alloy is subjected to high pressure in the mixing chamber. It is precisely because the traditional mold is straight into the inner hole of the pipe forming the direction of the cantilever wall parallel to the block-shaped semi-solid I Lu metal. The remaining several pieces are as flat as the shunt holes. Polished, invaded at 80 ° C | Insect for 10 ~ 15 minutes, and after the surface is alkali-etched, there are several smooth lines. Some dry lines are the seam pipe that passed the% bending process and received the internal pressure test. The mechanical properties test of elongation and the performance of the second pipe by the welding line have not been widely adopted by the industry: 'In the field,' is a large number of new bicycle heads and triangular bracket materials that require a variety of aluminum and aluminum convenience. Thermal industry, mechanical equipment The required resistance to internal pressure and acid resistance seamless pipe, as shown in Figure 2. Worm

495396 V. Description of the invention (2) As for the traditional production method of Ming and aluminum alloy seamless pipes: <一> As shown in Figure 4, the aluminum solution enters the rotary centrifugal casting machine (4) from the inlet (4-1) ~ 2) Centrifugal casting, casting into a hollow tube blank (4-3) in the machine, casting abutment: The motor (4-4) drives the transmission mechanism (4-5) to drive the rotation to rotate the centrifugal cast aluminum and Aluminum seamless round tube material. <II> Figure 5 shows the process of casting round solid bars of aluminum and aluminum alloy. Aluminum is first dissolved in the melting furnace (5 _ 丨), and then enters the heat preservation purification furnace (5-3) through the aluminum solution channel (5-2). ) For heat preservation and purification, enter the deep well water cooling pond through the aluminum melt outlet (5-4)-cooling, and obtain a water-cooled continuous casting solid aluminum rod (5-6). <3> Figure 6 shows the process of manufacturing a hollow seamless round tube blank material with a cobalt hole in the middle of the round rod. 〈四〉 No.7, the more advanced method is to use horizontal continuous hollow casting aluminum and aluminum 3 gold round billet materials. The figure shows an aluminum melting furnace (7- 丨) and an aluminum melt insulation and purification furnace. (7_3), annular graphite high-pressure water-cooled mold transmission system, wheeled gravitational travelling mechanism (7_5), hollow tube blank (7 — β) pulled out after condensing under high-pressure cooling water, Li County A, * — ^ , W column sequence, from right to left in the figure c, Method 放置 A high-temperature graphite hollow mold is placed at the bottom of the furnace The pressure of the S alloy solution makes m = the ring-shaped circulating high-pressure cooling water at the outlet of the ink mold. The horizontal direction is continuously pulled forward to become aluminum material. <Five> Figure 8 shows the current world ^ &amp; one side eunuch billet meter, the world's most advanced is the cradle crater 丨 crater machine, after heating the aluminum rod to pressure the factory hole After shaping, the main cylinder of the extruder is fast: the first 2 pressures will penetrate the Ming rod into a seamless circular tube material. The disadvantages of the above four production methods are: cover seam circle 瞢 wipe #… ,, the total finished product of W &amp;

TF895693.ptd Page 5 495396 V. Description of the invention (3) The rate is low, because in the production process, the lack of high-precision mold-shaped buried concentric circles is not accurate enough to affect the uneven thickness of the subsequent processing of the pipe wall and become waste. Therefore, it is an important factor that affects the yield. Γ The above three production buttons of Figure 4, Figure 5, plus Figure 6, and Figure γ are two. The only circle produced by the pipe is the seamless circle of the seam pipe = :: J. However, as shown in Figure 8 and the technical requirements are high, the concentric circle of the pipe can be guaranteed. — In several production processes of ΛΛ, the process is that the above ingots are melted in the primary dazzle furnace, and then the natural liquid flows through the primary to the second constant temperature smelting furnace. In force ... he :: ditch: heart valley and need When the temperature is constant to the casting temperature, it is even more necessary to remove the gas and oxygen in the liquid after fine = 5 gold element:: in: gas edge chemical blank material.嚯 ®-shaped seamless aluminum and aluminum alloy round tube The eight-dimensional substructure of this round seamless tube blank material needs to go through continuous looseness: as-built looseness Various aluminum and aluminum alloy seamless tube blank materials. Acoustic processing can be used to make the machine using hole-type variable roll processing. The σ method is based on the tube rolling plant 7Γ: 屮, which continuously slides out after pressure processing, or 疒 0 Lu billet is subject to rotation forming. Using three-roller rotary M-force processing, l = t = f rolls are shown in Figure 10, f mechanism is pushed forward, and cold pressure is applied:: wall: 1? ':, The processing rate is transmitted to change the tube blank itself. Loose eight =, in order to quickly use the order of the metal molecule group caused by the time of production;, ;;:, more need to change the casting density 'before the next-subsequent processing, must go through :: tube; molecular γ-annealed form

I TF895693.ptd ill Page 6 495396 V. Description of the invention (4) The principle is to eliminate the stress of the round pipe blank and restore the soft state diagram, as shown in the figure, and then use the drawing machine to stretch the tungsten carbide alloy mold shown in Figure 12 The figure shows the pipe entering direction (12-1), which is stretched by the stretching die (12-2), and the aluminum and aluminum alloy that meet the requirements of size and accuracy are pulled out from the right discharge direction (12-3). After being stretched, the joint material must be subjected to an intermediate annealing process, and so on. By analogy, the various shapes of the Ming and Shao alloy seamless pipes required by f are processed several times. V must be replaced with a mold of the same shape so that The tube is moulded and deformed step by step to achieve the other shape required. The complicated steps in the continuous processing of the fork and the complicated process flow, the direct stretching of d? F and the length of the fixed-length loss also cause the reduction of the yield; due to the existing traditional production of various aluminum and It is conceivable that the aluminum alloy seamless pipe is super cheap, and the production cost cannot be reduced. ,-Cheng-leather is not low: this item: supply-a kind of simple and high efficiency limited to circular "Γ-type early-action extruder to produce Shao alloy, but also disrespectful of the shape of a variety of seamless pipes and the corresponding mold set. The plan is the clever use of the traditional tube mold design of the original tube extrusion machine in the mold for the production of seamless tubes. To the horizontal single-action extruder: 3 pressurized cavities, and then this mold set is installed and produced. Package IΓ Kaiϊΐ 'You can produce a variety of inscriptions and ingot alloy seamless pipes in a simple and efficient manner at a low cost. Produce 22 mold sets' can use the simplest production method to directly produce ΐ: lattice seamless pipes, greatly improving Efficiency, greatly reducing health

495396 V. Description of the invention (5) Figures 1 to 12 have been added in the front as the content of the prior art. The mold set of the present invention will be described below with reference to Figures 13 to 18, and its features will be described. Brother and method please refer to FIG. 13 to FIG. 18, these drawings include the mold set ㈣ :: view, where FIG. 13 and FIG. 14 are the mold set: ST7 and FIG. 18 are parts drawings of the feeding mold and the forming mold, respectively: Referring to FIG. 13 and FIG. 14, FIG. 13 is a sectional view of the present invention == direction, that is, along the longitudinal axis axial direction =: view from the perspective of viewing the mold set of the present invention,: == ;; = yes; And forming die ⑺, the structure of which can be formed by the forming die (2; 利 ^ :::: adopts a cylindrical structure, advance positioning, and is characterized by: the shoulders are inlaid with each other and phase ^ is the lead-in section (1 -1 ), Zhongqiu /, and Guangke s 彳 are divided into two parts, that is, the left end of the right side is a short cylindrical segment ° (1 疋: a long axis of the cone segment (&quot;), a part drawing, where, Guide ^) ,,,, &quot;: Ling Yue Figure 15 and Figure 16 The feed die has three feeds in the axial direction — it is a short thick cylinder that feeds and guides the flow: holes (1 ()), The feed split holes 0-4) have the same starting and are not connected to each other. The 3 / mega feature is the size and shape of the three feed split holes. The three holes are along the longitudinal direction along the feeding side. The shape is along the radial direction. Axial evenly arranged, the angle α sound between the side and the longitudinal axis Ξ is inclined upward, the inclination can be taken from the bottom of the hole. The included angle α is-a = W α I angle. As can be seen from Figure 13 and Figure 15, the hole (1-4) is along the feeding direction 疋, the angle, and then One feature is that the area of the hole is gradually increased by the feed splitting until the introduction section (1-1)

The intersection with the cone segment (1-2), the cone segment (1_2) is an axis running from right to "V, H edges are connected. The cone of the cone segment (1_2) changes along the longitudinal generatrix Thin, longest cantilever structure. The two Λ degree angles of the cone masterbatch mold are shown in Fig. 15. The cylindrical section (1-3) of a short cylinder is very narrow when you enter Shishan and take the work. ) Are connected to the left and the sides, the diameter of the short cylinder is equal to the inner body of the aluminum or aluminum alloy seamless pipe ^? Into the section (η) and the cone section (Bu 2) and

In production: a piece of mold material is cut directly to make holes, etc., so the strength and stiffness are guaranteed. The mouth forming mold (2) is a cylindrical steel mold and the part drawing of FIG. 18, using the Dou Liuhu μ battle, and mouth mouth reading Figure 17, you 4 doors, talents ”, / right and inside edge and The feed mold (1) is engaged with each other and fixed:: 5 The cost of the mold set of the invention 'forming mold (2) has a through hole in the middle of the axis, according to the shape of the hollow through hole rw eight days.丄 y ^ forming 梹 is also divided into three ^ ^ ^ ^ ^ ^ clothes holes 1 and 2 (the inner hole of 2-D is cylindrical, the diameter of the circle-shaped inner hole is slightly larger than the feed hibiscus n

The left end face of the inner hole is related to the longitudinal axis: vertical first circle :: degree. The bottom surface of the taper hole's generatrix I surface and the taper hole section (2-2) can be deepened into a Φ since Miscellaneous: The inner hole of Fl Hall (2 ^ 2) is a small tapered hole on the right side and a small head on the right side. The inner hole of the right ring spot section (2 -1) communicates. The diameter of the bottom face of the corresponding part of the tadpole is slightly smaller]], the gap allows the feeding

V. Description of the invention (7) Passed smoothly, the angle formed by the left vertical axis is, the generatrix of the tapered hole of the tapered hole section (2 ~ 2) and cooperation, forming a step two cone section (&quot;) The right side of the taper phase (2-2) of the taper phase (2-2) seamlessly passes through the forming cavity, and the right end taper of the taper hole section (M): the enlarged quilt :, 2-1) The mother jet of the tapered hole of the hole section surface is connected to the inner hole fillet of the annular hole section (2 ~ 1), and the bottom end is set to Γ ;; Shaft: straight annular hole section (2- The left side of the inner hole is a slightly inclined recessed ring ：:: 3: The gap: to make the space here-column hole section (2-3), ^ // 料 门 腔 'forming mold is opened inside The left end part of ⑺ is made of Shao or two:? .Circle ^ inner hole 'inner hole Qing ^ Duan ㈣ left end: the outer diameter of the pipe that passes through the seamless pipe, the right end and the tapered hole are ii 枓 =) mold When i = f (2) is combined into a mold group, the cylindrical section (ι-1) and the cone section (b) which can be s 枓 () from Fig. 13 are obtained from Chengyu Wu &amp;% hole section (2_1). Insert into the forming die (2) and insert a composite die set. In 2 dimensions, the length of the cone section (1_2) of the feeding die (1) is approximately equal to the branch (2 \ circle hole section (2_1)). The sum of the length and the length of the tapered hole section (2-2), and the cylindrical section (1-3) of the / feeding die (1) is a short cylinder, which has entered the forming die (2) from right to left along the feeding direction. ) The right end of the column hole section (2_3), in the radial °, the corresponding hole of the cone section (1-2) and the cylindrical section (1-3) of the feeding die (1) and the forming die (2) By forming the material flow channel, the material flow flows from right to left into the through-tool group. If the above-mentioned mold group of the present invention is obtained through experiments, the inclination angle α between the feed distribution hole (丨) and the vertical axis is taken from 30 degrees to 35 In the range of degrees, the angle between the conical generatrix and the longitudinal axis of the tapered surface section (1-2) of the feeding die (1) is taken from 7 degrees to 8 degrees, and the forming die (2)

TF895693.ptd Page 10 cut out 6 Fifth, the description of the invention (8), the $ angle at the bottom generatrix of the tapered segment (2-2) is 3 degrees, and the tapered segment (2_2) == the generatrix and vertical axis of the hole The included angle 7 is 9 degrees to 0 degrees. At this time, the above-mentioned mold set of t Γ is particularly suitable for a horizontal single-acting extruder, and the invented mold set 'and the use of the mold set for a horizontal single-acting extruder' can be produced. Produce high-efficiency, low-cost Shao and Shao alloy beneficial seam pipes. …, $ The production of aluminum and aluminum alloy seamless pipes of various geometric shapes, as long as the inner hole shape of the column hole section (2-3) of card 幵 乂 f (2) is changed, and the inner hole shape is pressed as p. The shape and size of the seamless pipe with geometric shapes and sizes can be made. In 15.1, the mold set of the invention was formed from the right to the left to form an upwardly-inclined slotted pipe, a braided and bevel-shaped recessed mixing cavity, and a tunnel-shaped conical non-high-pressure molding zone. The second molding zone, and the leftmost one Seamless pipe standard outer diameter 30. During the advancement, the heated high-temperature Ming stick was placed in the orifice hole cutting 13 shown in Figure 1 3. The micro-pour / solid evil 1 Lu and Ming alloys are poured into the figure in the same direction as the spiral, and then the concave screw is poured into the bad-shaped mixing cavity, and is blocked to prevent the metal molecular structure toward the figure, and continues to be stressed. The seamless tube on the left end of the flow chart η: standard; the high pressure of the extruder is pushed to the 疋 type, at this time it becomes the required qualification and inscription

495396 V. Description of the invention (9) Gold seamless pipe. The invention obviously adopts a simple method and only needs a one-time production process. The process flow of traditional production of various aluminum and aluminum alloy seamless pipes was greatly reduced, the product yield was significantly increased by more than 90%, and the manufacturing costs were significantly reduced accordingly. The present invention successfully produces various aluminum and aluminum alloy seamless pipes that cannot currently be produced by traditional molds by means of a leap-type single-action spreader. [Description of component numbers] 1 Feeding mold 1-1 Leading section 1-2 Cone section 1-3 Cylindrical section 1--4 Feeding split hole 2 Forming mold 2--1 Right ring hole section 2 --2 Middle cone section 2- -3 Column hole section 4- -1 into π 4- -2 Centrifugal casting machine 4- -3 Hollow tube 4- -4 Motor 4 ·-5 Transmission mechanism 5 · -1 Melting Furnace 5- -2 Aluminum solution channel 5--3 Insulation purifying furnace Φ «

TF895693.ptd Page 12 495396

TF895693.ptd Page 13 495396 Schematic description This specification includes the following drawings: Illustrative drawing Figure 1 无缝 Seamless pipe produced by the technology will produce a longitudinal weld line Figure 2 is using the invention, + u month The method and the seamless pipe produced by the mold set illustrate the traditional two-element original rotary centrifugal casting inscription of the i-type single-action extrusion of the alloy and the explanatory diagram, processing 'become needed The principle of the seamless pipe is shown in Figure 7. It is a clear picture of _ t 44_, a tube of material &amp; technical continuous hollow casting to produce aluminum and aluminum alloy hollow, Figure 8 is, Figure 9 is incineration type perforation extrusion Illustrative drawing of the press, Fig. 1 〇 η material hardened hole-shaped double-roller cold-pressing principle, Fig. 疋 planetary three-roller cold-rolling pressure-machining principle] 1 e Fig. 1 2 ^ 将Illustrative drawing of annealing of cymbals, Fig. 13 and schematic drawing of a straight drawing machine for processing &amp; sized materials to the required hole diameter, Fig. 15 and 囝 14 Figures, Figures 16 and 16 are the front views of the feed molds in the mold set of the present invention. And FIG. 18 is a right mold molding die set of the present invention in a front view and a right

495396

TF895693.ptd Page 15

Claims (1)

495396 All media = group ^ f, can be used to produce various aluminum and aluminum alloy seamless pipes, into ^ d) dagger® tongue has a feeding fork (1) and forming die (2), feeding die (1) and forming The branch (2) uses the shoulders that touch each other to inlay and position each other, which lies in the / a feeding mold 0) can be divided into three parts' the right-hand lead-in section, and the once-conical cone section (1-2) ) And the cylindrical section (丨 -3) at the left end, which is equal to two. In the introduction section (丨 -1), there are three feed split holes (1-4) and three feeds. m = (14) the same size and shape, not connected to each other, two β in the radial and axial directions are placed again and the angle along the longitudinal axis along the feeding direction is inclined by an angle of α degrees, the feeding point = hole U—σ4) along the feeding The area of the hole is gradually increased in the direction. The cone section (1-2) is a truncated cone. The bottom of the right side of the cone is connected along the side of the feed distribution hole (1-4), and the cone section (1-) 2) The generatrical line along the vertical axis from right to left: the angle between the cone-shaped generatrix and the vertical axis is the sum, the cone segment (1-2) is the cylinder segment (1-2) 3) is a short cylindrical structure, the right end of which is connected to the left end surface of the cone segment (1-2), the diameter of the short cylinder is equal to the inner diameter of the aluminum or aluminum alloy seamless pipe to be manufactured, and the feeding mold (丨) is integrated The T-die (2) has a hollow through hole in the axial direction. The forming die (2) can be divided into three wounds, namely the ring hole section (2-1) on the right and the tapered hole section (2-1) in the middle. 2) Column hole section (2-3), in which the ring hole section (the inner hole of 2-0 is a round 胄 shape, the circle ^: the diameter of the inner hole is slightly larger than the feed shunt hole (丨-4 of the feed mold (1)) ), The inner hole of the tapered hole section (2-2) is a large truncated tapered hole on the right side and the small one on the right side. The hole diameter on the right side is smaller than the inner hole diameter of the ring hole section (2-1). The tapered hole section (2 — 2) The generatrix of the tapered hole is at a τ degree angle with the longitudinal axis. The left end of the forming die (2) is a column hole section (2 3). There is a thin cylindrical inner hole. The diameter of the inner hole is to be made. The outer diameter of the cylindrical pipe section of the seamless pipe of aluminum or aluminum alloy, the right end is connected with the cone and the hole section 495396. 6. The patent application scope (2-2) is connected to the left end. The feed mold (1) is composed of the cylindrical section (1_3). ) And cone section (1_2) Insert the forming mold (2) into the forming mold group from the annular hole section (2-1) of the forming mold (2). In the axial dimension, the cone of the feeding mold (1) The length of the segment (1__2) is approximately equal to the sum of the length of the bad hole segment (2 -1) of the forming branch (2) and the length of the tapered hole segment (2 _ 2), and the cylindrical segment (1_3) of the feed die (1) It is a short cylinder, which has just entered the column hole of the forming die (2) from the right to the left along the feeding direction. The right end of (2_3) 'in the radial direction, the cone section (1_2) and cylinder section (1_3) of the feeding die (1) and the corresponding apertures of the forming branch (2) form a flow channel, so that the flow from the right to the The left inflow passes through the mold group. 2 · If the scope of the patent application is 箆 1 苜 gt> y P 0 ΛΑ ^ younger page 1 group, the right end of the tapered hole section (2-2) of the forming die (2) is mixed: ? 丨 Although 4 »phase drawing ^ tapered hole, father big, and rounded corners of the inner hole section (2-1), the female winding and I of the tapered hole on the bottom surface. The hole &amp; produces π and &amp; $ Λ, + ,, spring # ”The h of the annular hole segment (2-1) whose vertical axis is perpendicular is h. The gap is 9 degrees. Among them, the angle P is 3 4 · For example, the patent application range is from 130 to 35 degrees. The puller group, where the inclination angle α is 5. · The patent application range is from 1 °. The member's puller group, where the angle / 3 is 7- 8 6. If the scope of patent application is from 19 to 10 degrees, and the tool set, where the angle r is among them, the mold group 7. If the mold of the scope of application for the patent application item 丨, do not apply to horizontal single action On the extruder. The forming die (2) δ. For the mold set of the first patent application scope, TF895693.ptd $ 17, page 495396 6. The shape of the inner hole of the column hole section (2-3) of the patent application scope can be changed as required. The shape and size of seamless pipes that require geometric shapes and sizes. 9. A production method of Shao-ming alloy seamless pipes, characterized in that the mold set described in item 1 of the patent application scope is used, and the mold set is used On horizontal single-action extruder. TF895693.ptd Page 18