EP0490763A1 - Vorrichtung zum Halbwarmschmieden eines Metallwerkstückes und Verfahren zur Anwendung solcher Vorrichtung - Google Patents

Vorrichtung zum Halbwarmschmieden eines Metallwerkstückes und Verfahren zur Anwendung solcher Vorrichtung Download PDF

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Publication number
EP0490763A1
EP0490763A1 EP91403359A EP91403359A EP0490763A1 EP 0490763 A1 EP0490763 A1 EP 0490763A1 EP 91403359 A EP91403359 A EP 91403359A EP 91403359 A EP91403359 A EP 91403359A EP 0490763 A1 EP0490763 A1 EP 0490763A1
Authority
EP
European Patent Office
Prior art keywords
ejector
matrix
distribution chamber
cooling
circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP91403359A
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English (en)
French (fr)
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EP0490763B1 (de
Inventor
Nérée Canonne
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ascometal SA
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Ascometal SA
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Filing date
Publication date
Application filed by Ascometal SA filed Critical Ascometal SA
Publication of EP0490763A1 publication Critical patent/EP0490763A1/de
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Publication of EP0490763B1 publication Critical patent/EP0490763B1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K29/00—Arrangements for heating or cooling during processing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00—Details of machines for forging, pressing, or hammering
    • B21J13/08—Accessories for handling work or tools
    • B21J13/14—Ejecting devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J3/00—Lubricating during forging or pressing

Definitions

  • the present invention relates to a semi-hot forging device for a metal part and a method of using such a device.
  • Such a device is known in the field of hot forging, for example on high speed horizontal automatic machines of the HATEBUR or NATIONAL type in which cooling of the matrix is ensured by circulation in a closed circuit of pure water under pressure. of 4 Kg / cm2 with a flow rate between 60 and 120m3 per hour.
  • Hot forging makes it possible to produce parts whose dimensions have a tolerance of between ⁇ 0.4mm with a machining allowance of approximately 1mm. Such forging does not allow parts to be produced which have undergone certain type of deformation such as spinning due to a poor coefficient of friction between part and die.
  • a device is also known and commonly used in the field of mid-hot forging, forging which makes it possible to produce more complex parts than cold forging with dimensions having a tolerance of between ⁇ 0.1 mm, which thus allows the production of rough form parts.
  • Such a type of forging is particularly favorable for the spinning of parts of parts, which results in localized areas of the imprint of the matrix of significant heating by mechanical friction.
  • the cooling and lubrication member is fixed, and / or independent of the matrix body and of the ejector and a single water supply, generally containing a lubricant, is used for cooling and lubrication of the imprint of the matrix.
  • the cooling member can only be used, for cooling and lubricating the impression of the matrix, after the ejection of the part and before the introduction of the next part, which delays in time, the cooling of the imprint of said matrix.
  • the known semi-hot forging device works at a rate less than 20 pieces per minute for forgings of 0.5 to 2 kg by weight, although the presses currently in use accept a rate of about 40 pieces per minute.
  • a part is forged approximately every two press movements to ensure sufficient cooling of the tool.
  • a single cooling and lubrication circuit generates, on the one hand, a significant loss of lubricant and, on the other hand, fouling of the imprint of the matrix, by the lubricant continuously affixed in the imprint. during cooling, while it is still at a relatively high temperature, caused by the passage of the previous forged part, as well as fouling of all the organs located near the matrix.
  • the present invention aims to overcome these various drawbacks by proposing a mid-hot forging device allowing improved cooling of the matrix, a reduction in pollution by saving lubricant, an acceleration of the forging rate in number of forged parts per hour thanks to improved cooling, as well as cleaning ensuring the removal of the adherent lubricant on the impression and used during a previous forging.
  • Fig. 1 shows a forging tool of a device 1 for medium heat forging of a metal part 2.
  • the device comprises a matrix 3 in which is formed an imprint 4 of the part 2 forged by lukewarm shaping, using a not shown punch, which presses the preformed part 2 in the imprint 4 of the matrix 3.
  • the matrix 3 is inserted into a body 6 of the matrix in which is formed a circuit 7 for circulation of fluid, this circuit being for example arranged in a star.
  • the matrix 3 regularly undergoes a temperature increase in contact with the forged parts 2 during each forging operation.
  • the device is provided with a longitudinal ejector 8 secured to the die body 6 and to the die 3, and passing through a bore 9 formed in the body 6 of the matrix and a guide bore 10 formed in the matrix 3.
  • this ejector 8 has an end face 12 which forms part of the surface of the cavity 4 of the die 3.
  • the ejector 8 comprises, opposite the matrix 3, a rear part 13 forming the heel of said ejector and which has an end face 14 constituting a mechanical support for the movement of said ejector 8 and the ejection of part 2 .
  • the part 2 extraction force is communicated to the ejector 8, by means of a rod 15, mechanically linked to a means for ejecting said part, not shown in the figures.
  • the body 6 of the matrix is inserted into an envelope 16 in which are drilled inlets 7 for fluids and outlets 18 for said fluids.
  • the matrix body 6 is placed in abutment, on the one hand, on a shoulder 9 formed in the casing 16 and, on the other hand, blocked by a cover 20 fixed by means of screws 21.
  • the matrix body 6 comprises, in circuit 7, a distribution chamber 25 communicating with the fluid inlets 17 and communicating sequentially with the outlets 18 of said fluids.
  • the distribution chamber 25 is constituted by a cavity formed in the central part of the bore 9 of the matrix body 6, in which the rear part 13 of the ejector 8 slides.
  • the distribution chamber 25 and the ejector 8 are cylindrical and concentric.
  • the ejector 8 comprises a longitudinal duct 26, for example cylindrical, communicating with the distribution chamber 25 by at least one oblong and radial passage 27.
  • the ejector 8 comprises, at its front part 11, a fluid spraying member which is constituted by a series of radial orifices 28.
  • the radial orifices 28 are distributed over the front part 11 of the ejector 8 in different positions, orientations, densities, diameters, selectively to ensure adaptable cooling to each surface element of the cavity 4 of the matrix 3.
  • the front part 11 of the ejector 8, provided with the radial orifices 28, is located in the bore 9 of the matrix body 6, during the forging of a part 2 and communicates with the distribution chamber 25 and the circuit 7, which keeps said radial holes 28 in a liquid medium at each forging operation.
  • the radial orifices 28 form a nozzle which sprays each surface element of said cavity 4 with a pressurized fluid.
  • the device operates as follows.
  • the matrix 3 placed in the matrix body 6 is maintained at a temperature defined forging by means of the circuit 7 in which circulates a cooling fluid of the body 6 of the matrix and of the matrix 3.
  • the piece 2 forged is ejected by means of the ejector 8 sliding in the bore 9 of the die body 6 and in the bore 10 of the die 3.
  • the front face 12 of the ejector 8 is supported on the forged part 2, molded in the cavity 4 of the matrix 3 and said cavity 4 is cooled by means of the radial orifices 28.
  • the cooling fluid flows from the inlet 17 of fluids to the outlet 18 of the fluids, passing through, in this embodiment, the distribution chamber 25 and the circuit 7 in a star shape of the matrix body 6.
  • the outlet 18 of the fluids is obstructed by the rear part 13 of the ejector 8 which closes the circuit 17, at a point 29 as shown in Fig. 2, and drives the cooling fluid of the distribution chamber 25 through the radial orifices 28 and the imprint 4 of the matrix 3 passing through the radial hole 27 and the longitudinal duct 26.
  • the lubrication fluid passes through the inlets 17, the circuit 7, the distribution chamber 25, the radial hole 27, the longitudinal duct 26 and the radial orifices 28.
  • the nozzle formed by the radial orifices 28 sprinkle with lubricant the imprint 4 of the cooled matrix 3.
  • the essential role of the ejector 8, associated with the circuit 7, is the spraying of a high pressure cooling fluid into the cavity 4, via the radial orifices 28 so as to benefit from the thermal effect of vaporization of the fluid for cooling the matrix 3, the thermal effect of evaporative cooling is all the more effective as the spraying is carried out during the ejection of the part 2.
  • the distribution chamber 25 is supplied sequentially by different fluids which are constituted either by pure cooling water, or by water with the addition of a lubricant, or by a gas or by a mixture in determined proportion of pure water or added and a gas.
  • the gas may be compressed air circulating continuously in the circuit 7 to give the various fluids the necessary pressure.
  • the coolant is made up by a mist of fine droplets and the lubricating fluid consists of a mist of fine droplets of a fluid composed of water and lubricant.
  • the lubricant is chosen from a graphite oil, graphite water or a white product.
  • Such a device and its method of use allow an increase in the speed of production of semi-hot forgings.
  • cooling by spraying-spraying under pressure is extremely efficient and more precisely makes it possible to double the speed of production of forgings.
  • the separation of the coolant and the lubricant provides an advantage in the field of pollution, since the consumption of the lubricant is about twenty times lower than the consumption of the coolant and the economy. in lubricating product and in pollution of the rejected fluids are in proportion.
  • This separation allows the cleaning of the spray nozzle and the matrix cavity at each forging operation and efficient lubrication when the cavity is previously cooled.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
EP19910403359 1990-12-14 1991-12-11 Vorrichtung zum Halbwarmschmieden eines Metallwerkstückes und Verfahren zur Anwendung solcher Vorrichtung Expired - Lifetime EP0490763B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9015705A FR2670411B1 (fr) 1990-12-14 1990-12-14 Dispositif de forgeage a mi-chaud d'une piece metallique et procede d'utilisation d'un tel dispositif.
FR9015705 1990-12-14

Publications (2)

Publication Number Publication Date
EP0490763A1 true EP0490763A1 (de) 1992-06-17
EP0490763B1 EP0490763B1 (de) 1994-06-22

Family

ID=9403268

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910403359 Expired - Lifetime EP0490763B1 (de) 1990-12-14 1991-12-11 Vorrichtung zum Halbwarmschmieden eines Metallwerkstückes und Verfahren zur Anwendung solcher Vorrichtung

Country Status (3)

Country Link
EP (1) EP0490763B1 (de)
DE (1) DE69102618T2 (de)
FR (1) FR2670411B1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1378303A2 (de) * 2002-07-05 2004-01-07 Eifelwerk Heinrich Stein GmbH &Co.KG Vorrichtung zum Warmumformen
CN104226809A (zh) * 2014-08-29 2014-12-24 如皋市大生线路器材有限公司 一种铁路高压线路用支撑单耳模具
EP2656941A4 (de) * 2010-12-21 2017-07-26 Showa Denko K.K. Schmiedevorrichtung
CN108637156A (zh) * 2018-05-24 2018-10-12 泉州市三业智能科技有限公司 锻造模具
CN111036821A (zh) * 2019-12-17 2020-04-21 江苏理研科技股份有限公司 一种可内部冷却润滑的模具及其冷却润滑方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105598353A (zh) * 2016-02-17 2016-05-25 浙江德润重工机械有限公司 一种用于锻造水冷却的虹吸桶

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE611132C (de) * 1933-10-07 1935-03-22 Carl Heinrich Kuhne Auswerfvorrichtung fuer Bolzen-, insbesondere Bolzenwarmpressen
FR2094073A1 (de) * 1970-06-05 1972-02-04 Hatebur Ag F B
US4028918A (en) * 1976-01-14 1977-06-14 Hatebur Umformmaschinen Ag Assembly for applying lubricant to the working area of a punching device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE611132C (de) * 1933-10-07 1935-03-22 Carl Heinrich Kuhne Auswerfvorrichtung fuer Bolzen-, insbesondere Bolzenwarmpressen
FR2094073A1 (de) * 1970-06-05 1972-02-04 Hatebur Ag F B
US4028918A (en) * 1976-01-14 1977-06-14 Hatebur Umformmaschinen Ag Assembly for applying lubricant to the working area of a punching device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1378303A2 (de) * 2002-07-05 2004-01-07 Eifelwerk Heinrich Stein GmbH &Co.KG Vorrichtung zum Warmumformen
EP1378303A3 (de) * 2002-07-05 2004-05-06 Eifelwerk Heinrich Stein GmbH &Co.KG Vorrichtung zum Warmumformen
EP2656941A4 (de) * 2010-12-21 2017-07-26 Showa Denko K.K. Schmiedevorrichtung
CN104226809A (zh) * 2014-08-29 2014-12-24 如皋市大生线路器材有限公司 一种铁路高压线路用支撑单耳模具
CN104226809B (zh) * 2014-08-29 2016-06-08 如皋市大生线路器材有限公司 一种铁路高压线路用支撑单耳模具
CN108637156A (zh) * 2018-05-24 2018-10-12 泉州市三业智能科技有限公司 锻造模具
CN108637156B (zh) * 2018-05-24 2024-04-12 泉州市三业智能科技有限公司 锻造模具
CN111036821A (zh) * 2019-12-17 2020-04-21 江苏理研科技股份有限公司 一种可内部冷却润滑的模具及其冷却润滑方法

Also Published As

Publication number Publication date
DE69102618D1 (de) 1994-07-28
DE69102618T2 (de) 1995-02-23
FR2670411A1 (fr) 1992-06-19
FR2670411B1 (fr) 1993-04-09
EP0490763B1 (de) 1994-06-22

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