EP4093559A1 - Dispositif de nettoyage de l'event d'une matrice de forgeage et procede de mise en oeuvre de ce dispositif - Google Patents
Dispositif de nettoyage de l'event d'une matrice de forgeage et procede de mise en oeuvre de ce dispositifInfo
- Publication number
- EP4093559A1 EP4093559A1 EP21705248.9A EP21705248A EP4093559A1 EP 4093559 A1 EP4093559 A1 EP 4093559A1 EP 21705248 A EP21705248 A EP 21705248A EP 4093559 A1 EP4093559 A1 EP 4093559A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- vent
- aqueous solution
- cleaning
- die
- outlet
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C35/00—Removing work or waste from extruding presses; Drawing-off extruded work; Cleaning dies, ducts, containers, or mandrels
- B21C35/06—Cleaning dies, ducts, containers or mandrels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/0082—Dust eliminating means; Mould or press ram cleaning means
Definitions
- the present invention relates to a device for cleaning the vent of a forging die for removing residues causing plugs in the vent. It also relates to a method of implementing this cleaning device.
- the invention finds applications in the field of forging metal parts and, in particular, in the fields of forging, stamping or extrusion of metal parts such as parts of aeronautical turbomachines.
- the manufacture of metal parts by forging consists in shaping a piece of metal, called a slug or blank, by means of a pair of dies closed and pressed against each other by means of a tool. compression such as a press or pestle.
- Each of the dies generally metallic, has an outer face intended to be in contact with the compression tool and an inner face intended to be in contact with the metal slug.
- the inner face of each die of the pair of dies generally comprises the imprint of the shape chosen for the metal part, the inner faces of the dies of a pair of dies being positioned opposite each other, during the compression.
- Air pockets can, for example, cause filling problems, which lead to inaccurate part geometry metal and therefore rejects, metallurgical risks due for example to heating of the metal piece, risks of premature damage to the dies or die impressions, etc. All these problems have, of course, consequences on the cost and the manufacturing time.
- vent is an orifice that passes right through the wall of the die to allow the air trapped between the two dies to escape.
- FIG. 1 An example of a pair of dies with a vent is shown in FIG. 1.
- the pair of dies 10 comprises: a first die 11, or upper die, the inner face 11 a of which is provided with a first cavity 13, and a second die 12, or lower die, the inner face 12a of which is provided with a second recess 14.
- one of the dies for example the upper die 11, comprises a vent 20 which extends over the entire thickness of said die so as to create an exhaust channel between the inner face 11 a and the outer face 11 b of the die 11.
- This vent 20 generally produced by drilling, comprises an air inlet 21 opening onto the inner face 11a of the die 11, preferably at a place where the air is trapped. on the impression (for example a place where the impression forms an acute angle).
- the vent 20 also has an air outlet 22 opening onto the outer face 11b of said die 11, which is a free surface unimpeded to the flow of air.
- the two dies 11 and 12 are assembled and pressed against each other, for example by means of their side handles 30 or a press or a pestle, etc. .
- the air trapped between the metal slug and the dies 11, 12 at the time of the assembly of the dies can flow through the air inlet 21 of the vent 20 to the air outlet 22 of the 'vent then escape out of the matrix.
- a lubricant layer for example an aqueous graphite solution
- FIG. 2 shows schematically an example of a vent 20 in which residues 41 have accumulated, to form a plug making it difficult, if not impossible, the flow of air.
- the lack of air flow creates, upstream of the accumulated residues, an air pocket 42 which induces all the risks and drawbacks already mentioned above for the case of dies without a vent.
- FIG. 3 schematically represents an example of a metal part 40 formed from a metal piece in a die 11.
- This example shows a protuberance 43 formed on the metal part 40 at the location of the mouth 21 of the vent 20 by the metal piece cast in the vent on the surface of the cavity.
- Such a protrusion not only results in a loss of metal, but in addition causes blocking of the part in the cavity, necessitates shearing of the protuberance in the vent and weakens the die.
- the vent is often difficult to spot on a hot, lubricant-coated die, resulting in a relatively long procedure.
- the vapors emanating from materials and tools can obstruct the visibility of the operator, further increasing the duration of the intervention. The productivity of the metal parts is therefore greatly reduced by these cleaning operations.
- a forging tool which comprises forging dies and a device for cleaning the vents of the dies by injection of aqueous solution and ultrasound in each vent.
- the invention relates to a device for cleaning a vent of a first forging die adapted to receive, between said first die and a second die, a piece of metal to be shaped to produce a metal part, said cleaning device comprising: an injection pump for an aqueous solution, suitable for injecting the aqueous solution into the vent, an ultrasound generator, suitable for generating ultrasonic waves in the vent, an air intake suitable for ensuring to the open air of the vent, and a valve system for alternately controlling at least the injection of aqueous solution and ultrasound and the venting of the vent.
- This cleaning device makes it possible to regularly and easily clean the die vent in order to remove residues therefrom before they create, by accumulation, a plug.
- the cleaning device may have one or more additional characteristics among the following, considered individually or in any technically possible combination: 'vent extending between an inlet flowing into the interior of the die and an outlet opening out into the exterior of the die, the injection pump is installed at the outlet of the vent to project the aqueous solution from the outlet to the inlet of said vent .
- the cleaning device comprises an evacuation device suitable for evacuating, out of the vent, residues resulting from the forging of the metal part, the evacuation of the residues being controlled, after the injection of aqueous solution and ultrasound, by means of the valve system, the evacuation device comprises an air blowing device installed at the outlet of the vent and ensuring an injection of air into the interior of the vent from the outlet of said vent.
- the evacuation device comprises a suction device installed at the outlet of the vent and ensuring suction of the aqueous solution with the residues.
- the ultrasound generator has a plurality of ultrasound transducers mounted axisymmetrically around the outlet of the vent the ultrasound generator has an annular ultrasound transducer, mounted, through a central opening, around the outlet of the vent vent.
- the valve system comprises a first valve connected to the discharge device, a second valve connected to the injection pump and a third valve connected to the air intake.
- the aqueous solution injected by the injection pump contains a corrosion inhibitor. it comprises a pressure probe suitable for detecting the pressure of the aqueous solution injected, said probe being connected to an automatic processing unit capable of automatically controlling the valve system and the ultrasound generator.
- Another aspect of the invention relates to a method for cleaning a vent of a forging die using the device defined above.
- This process comprises, at the end of an operation of forging a metal part, the following operations: opening of the injection pump and starting of the ultrasound generator in order to insert the aqueous solution and ultrasound in the vent, after detachment and detachment of the residues, closing of the injection pump and the ultrasound generator and opening of the air intake.
- This method has the advantage of being able to be implemented during an inter-operation period so that it does not generate any loss of time and therefore no drop in productivity.
- This cleaning process may have one or more additional characteristics among the following, considered individually or in any technically possible combination: it comprises, after closing the injection pump and the ultrasound generator, an operation of opening of the discharge device in order to discharge the aqueous solution and the residues, said discharge device being closed before the opening of the air intake.
- the opening / closing of the injection pump, the opening / closing of the discharge device and the opening / closing of the air intake are controlled from a valve system in which a first valve controls the evacuation device, a second valve controls the injection pump and a third valve controls the air intake. it is implemented during an interoperative period to put in place the materials and tools necessary for forging the new metal part. it is implemented at the end of each forging operation of a predefined series of metal parts.
- Figure 1 already described, shows a schematic sectional view of an example of forging dies with a vent
- Figure 2 already described, shows a schematic view of a metal part being forged when residues have accumulated in the vent;
- Figure 3 already described, shows a schematic view of a metal part being forged when the die vent is of large diameter;
- Figure 4 shows a schematic view of an example of a cleaning device according to the invention.
- Figure 5 schematically shows the cleaning device of Figure 4 during different phases of cleaning
- Figure 6 shows, in the form of a functional diagram, the various operations of the method of implementing the cleaning device of Figure 4.
- FIG. 4 An example of a forging tool comprising forging dies and a device for cleaning the vents of these dies according to the invention is shown schematically in FIG. 4, at the outlet of a forging die vent.
- the vent 20 can be made in the upper die or in the lower die.
- a vent - or more vents - can also be made in each of the two dies of the pair of dies.
- the vent 20 is produced by drilling in the die 11 and extends throughout the thickness of the die, between the inner face 11a and the outer face 11b of said die.
- the matrix can include several vents distributed at different locations in the cavity, each of these vents being cleaned successively or simultaneously by the cleaning device as will be described below.
- the vent 20 has an air inlet 21 opening onto the inner face 11a of the die 11 and an air outlet 22 opening onto the outer face 11b of said die and called also outer through-end.
- the vent 20 can have various shapes such as, for example, a section of various shape (for example circular, square, triangular, etc.) or of various size (for example of a diameter of between 0.2 to 7mm in surface area and, preferably, between 0.5 to 5 mm
- the vent 20 can also have a section whose shape and size vary along its length between its inlet 21 and its outlet 22.
- the cleaning device 100 of the vent 20, called more simply the cleaning device, comprises an injection pump 110 suitable for injecting an aqueous solution into the vent 20.
- the injection pump 110 comprises: a pipe reception 111 of the aqueous solution, connected to a container 113 containing the aqueous solution or to a source or to any other device making it possible to supply the injection pump 110 with aqueous solution, an ejection line 112 of the aqueous solution, connected to the outlet 22 of the vent 20, via a valve system 130 described later, and a set of components ensuring the pressurization of the aqueous solution so that the aqueous solution injected into the outlet of the vent 20 through the ejection line 112 is at a pressure greater than the pressure of the aqueous solution in the receiving line 111.
- the injection pump 110 has a capacity adapted to the amount of aqueous solution injectable into the vent 20.
- This aqueous solution may include, in addition to water, compounds offering various advantageous properties. for cleaning the vent, such as a solvent or an anti-lime compound.
- the choice of detergent may depend in particular on the temperature of the billet and / or the dies as well as on the metallic material of the vent.
- the aqueous solution may include, for example, a predefined content of a detergent such as glycol, alkaline sodium hydroxide, alcohol, nonionic surfactants, alkaline surfactants, etc., which by its properties surfactant properties, participates in the elimination of residues lodged in the vent.
- the proportion of detergent in the aqueous solution can vary, for example, between 2 and 10% by mass and, more preferably, between 4 and 5%.
- the aqueous solution may comprise a corrosion inhibitor agent, such as, for example, amines, an alkaline solution, ammonia, de-chlorinated water, etc., which, when the matrix is metal, avoids any risk of rust forming inside the vent.
- a corrosion inhibitor agent such as, for example, amines, an alkaline solution, ammonia, de-chlorinated water, etc.
- This corrosion inhibitor can be mixed with the aqueous solution, preferably basic (PH> 7), with or without detergent.
- said solution can be injected at room temperature, that is to say at the temperature of the place, generally a workshop. It can also vary, with respect to the ambient temperature, from a few degrees Celsius (in winter conditions, for example, taking the precaution not to allow the aqueous solution to freeze) up to about sixty degrees Celsius (in conditions summer, for example, in a forge workshop with surrounding kilns).
- room temperature that is to say at the temperature of the place, generally a workshop. It can also vary, with respect to the ambient temperature, from a few degrees Celsius (in winter conditions, for example, taking the precaution not to allow the aqueous solution to freeze) up to about sixty degrees Celsius (in conditions summer, for example, in a forge workshop with surrounding kilns).
- it is possible to thermostate the aqueous solution between 20 ° C and 60 ° C and, advantageously, between 40 ° C and 55 ° C.
- the aqueous solution can be stirred continuously or at regular intervals, for example by means of a stirrer,
- the injection pump 110 can be a conventional pump, sized according to, for example the pressure drop calculated in the ejection pipe and in the vent. According to non-exhaustive examples, the injection pump 110 can be chosen so as to meet the following properties:
- the cleaning device 100 also includes an ultrasound generator 150, an evacuation device 120, an air intake 140 and a valve system 130.
- the assembly of these devices can be mounted in a frame, for example mobile and adapted to be moved up to the die or fixed and mounted on the outer face of the die. Whether movable or stationary, this cleaning device is designed to be installed at the outlet of the vent, that is, at the outward opening end of the vent.
- the ultrasound generator 150 is a device which produces ultrasound making it possible to take off, from the walls of the vent 20, the residues resulting from the forging of the metal part.
- the ultrasound generator generates ultrasound with successive phases of compression and decompression.
- the decompression phases generate a multitude of microscopic bubbles in the aqueous solution.
- the Ultrasound can be produced, for example, with a frequency between approximately 25 and 90 kHz, in particular between 30 and 60 kHz, and more particularly between 40 and 50kHz.
- the ultrasound generator 150 may include at least two ultrasound transducers positioned axisymmetrically around the outlet 22 of the vent, for example attached to the outer face 11b of the matrix.
- the ultrasound generator 150 may comprise a single ultrasound transducer, of annular type, positioned permanently or almost permanently around the outlet 22 of the vent, or fixed on the outer face 11b of the matrix, or directly nested around the outlet of the vent.
- the evacuation device 120 is a device intended to rid the vent 20 of the aqueous solution and of the residues detached by the aqueous solution with the addition of ultrasound.
- This evacuation device 120 includes an evacuation pipe 121 connected to the outlet of the vent 20 via a valve system 130 described later.
- the discharge device 120 may include a residue retention tank 122 in order to recover said residue and the aqueous solution.
- the air intake 140 is an air inlet pipe connected to the outlet of the vent 22 and leading to the open air. This air intake 140 provides venting to the vent 20 when the aqueous solution with the residues has been evacuated, this venting allowing the vent to dry before a new part metal is forged.
- the valve system 150 comprises several valves connected to each other and making it possible to alternately control the injection of the aqueous solution with ultrasound, the evacuation of the residues and the venting of the vent.
- the valve system 150 has a first valve V1 connected to the discharge device 120, a second valve V2 connected to the injection pump 110 and a third valve V3 connected to the air intake 140.
- the second valve V2 is provided to control the opening or closing of the ejection pipe 112 connecting the injection pump 110 to the vent 20.
- the pump injection 110 does not turn and when the second valve V2 is open, the injection pump turns and sends aqueous solution into the vent 20.
- the first valve V1 is provided to control the opening or closing of the discharge pipe 121 connecting the discharge device 120 to the vent 20.
- the device evacuation does not work and when the first valve V1 is open, the evacuation device 120 operates and discharges the aqueous solution with the residues out of the vent 20.
- the third valve V3 is provided to control the opening or closing of the air inlet pipe connecting the air intake to the vent 20. When the third valve V3 is closed, no air enters in the vent and when the third valve V3 is open, air enters the vent 20.
- one and the same pipe is mounted in the outlet of the vent 20, this single pipe replacing the ejection pipe 112, the air inlet pipe and a pipe of discharge 121 in the portion located between the outlet of the vent 20 and the valve system 130.
- This pipe like all the other pipes of the cleaning device, can be for example a tube, a pipe or any other closed pipe which can be inserted into the outlet of the vent 20 or fixed around the outlet of the vent 20 to ensure a passage of fluid - aqueous solution and / or air - between said vent and the cleaning device.
- this single pipe is connected to a "pipe node" serving the discharge pipe 121 of the discharge device 120, the drain pipe. air inlet of the air intake 140 and the ejection pipe 112 of the injection pump 110.
- This embodiment has the advantage of allowing a single and unique connection of the cleaning device to the outlet of the 'vent 20 to carry out all the cleaning operations which will be described later.
- the outlet 22 of the vent is equipped with a seal 160 making the junction between the pipe hermetic - for example the single pipe or the discharge pipe, the inlet pipe d 'air or pipeline ejection.
- This seal 160 is chosen so as to have properties and stability compatible with the heating temperature of the matrix.
- the discharge device 120 only has a pipe allowing residues entrained by the aqueous solution to be discharged out of the vent.
- the exhaust device 120 includes an air blowing device installed at the outlet of the vent 20, after the first valve V1. This blower device is designed to inject a flow of air into the interior of the vent from the outlet of said vent. This blowing device may include, for example, a blower pump sized by means of a pressure drop calculation.
- the blower pump can be chosen so as to be stabilized in less than 1s with a hold of 10 to 20 seconds and to meet the following properties: a blowing pressure of 140 kPa minimum and an air flow of 10 l / minute over a length of 1 m; or a blowing pressure of at least 200 kPa and an air flow rate of 10 l / minute over a length of 1 m; or a blowing pressure of 142 kPa minimum and an air flow of 40 l / minute over a length of 1 m.
- valves V1 and V2 can be one and the same valve offering one closed position and two open positions, one for air, the other for the aqueous solution.
- the cleaning device may include a suction device installed at the outlet of the vent 20, after the first valve V1, and ensuring suction of the aqueous solution with the residues.
- the suction device can be chosen so as to be stabilized in less than 1 s with a hold of 10 to 20 seconds and to meet the following properties: a suction pressure of 40 kPa (depression of 110 kPa) and a flow rate of 10 l / minute over a length of 1 m; or a suction pressure of 40 kPa (depression of 110 kPa) and a flow rate of 40 l / minute over a length of 1m.
- the embodiments where the discharge device 120 comprises an air blowing device or a suction device have the advantage that the vent is dried before being reused for forging a new one. room. It is therefore not necessary to treat the aqueous solution against the lime.
- the cleaning device can be manually controlled by an operator who opens and closes the various valves V1, V2, V3 of the valve system 130 as the cleaning operations progress. .
- the operator also controls the ultrasonic generator by means of an on / off button.
- all of the valves of the valve system 130 are connected to an automatic processing unit, such as a computer, which controls the opening and closing of the valves and the running of the ultrasound generator. predetermined timing data function.
- the operator only controls the start of cleaning operations by pressing an on / off button.
- This pressure probe suitable for detecting the pressure of the aqueous solution injected into the vent 20, is connected to an automatic processing unit (for example a computer) which automatically controls the various valves of the valve system 130 and the generator. ultrasound, as soon as a predefined threshold pressure is detected.
- an automatic processing unit for example a computer
- the cleaning device 100 can be implemented after each forging operation of a metal part or after a predetermined number of forged metal parts or each time the operator deems necessary. Preferably, it will be implemented regularly during a parts forging campaign, for example after manufacturing 1 to 3 metal parts, to ensure regular evacuation of the air during each forging operation.
- FIG. 5 An example of a cleaning operation is shown in Figures 5 and 6.
- the cleaning device 100 is actuated, either automatically or manually by the operator.
- the second valve V2 opens, ensuring the start of the injection pump 110 and the generator of ultrasound 150.
- a predefined quantity of aqueous solution is then injected into the vent 20 and ultrasonic waves are pulsed into the aqueous solution inside the vent (phase A of FIG. 5).
- the aqueous solution and ultrasonic waves work together to dislodge the blocking plug or residue lodged in the vent and the accumulation of which could form a blocking plug.
- the vent 20, filled with aqueous solution under pressure acts as a wave vector.
- the ultrasonic waves successively trigger compression phases causing the creation of small bubbles (cavitation) and decompression phases during which the bubbles implode violently.
- the residue particles detach and detach from each other.
- the aqueous solution contains detergent, the detachment and separation of the residue particles is facilitated and accelerated.
- the duration of dislocation of the residues is of the order of a few seconds to one minute.
- phase C of the cleaning is initiated.
- the process is implemented manually by the operator, it is the operator who initiates phase C by closing the second valve V2 and opening the first valve V1, when he sees a micro-jet of aqueous solution.
- the process is implemented automatically, it is the drop in the pressure in the vent which causes the closing of the second valve V2 to be actuated and the opening of the first valve V1.
- the third valve V3 can be opened quickly after the opening of the first valve V1 (phase D) in order that the air coming from the air intake 140 can enter the vent 20 and dry said vent.
- the third valve V3 can be opened, for example, a few seconds (for example about ten seconds) after the first valve V1 has been opened.
- the discharge device 120 comprises a blowing device or a suction device
- the drying of the vent 20 is very rapid and can be carried out in about ten seconds. As soon as the cleaning operation is finished, the next operation of the forging campaign can be started, without wasting time.
- the third valve V3 remains open during the forging operation, this valve V3 not only allowing the passage of air from the air intake 140 to the vent 20, but also the passage of air from the vent 20 to the air intake 140.
- the fact that the third valve V3 is open allows the air trapped between the two dies to be evacuated, via the vent 20, to the outside of the dies and the cleaning device.
- the cleaning device is mobile, it suffices to move the cleaning device away from the die so that the vent again opens to the outside.
- the air trapped between the dies will be evacuated through the vent directly outside the dies.
- the cleaning operations implemented by the cleaning device of the invention have the advantage of being able to be performed relatively quickly, without taking time on the forging campaign. Indeed, between two forging operations, that is to say when a metal part has just been formed and before the next part can be forged, several tasks must be performed by the operator such as removing the part. formed, install it in its rack, remove dust from the die, deposit a layer of lubricant on the internal face of the die, open the oven, take a piece of metal and place it in the die, etc. These different "inter-operations" tasks take a significant and incompressible time. Since the vent cleaning operations are relatively quick, they can become lodged during these inter-operation periods so as not to disrupt the duration of a forging campaign.
- the device for cleaning the vent of a forging die according to the invention comprises various variants, modifications and improvements which will become apparent. obvious to those skilled in the art, it being understood that these variants, modifications and improvements form part of the scope of the invention.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning By Liquid Or Steam (AREA)
- Forging (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR2000590A FR3106288B1 (fr) | 2020-01-22 | 2020-01-22 | Dispositif de nettoyage de l’évent d’une matrice de forgeage et procédé de mise en œuvre de ce dispositif |
PCT/FR2021/050087 WO2021148748A1 (fr) | 2020-01-22 | 2021-01-18 | Dispositif de nettoyage de l'event d'une matrice de forgeage et procede de mise en oeuvre de ce dispositif |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4093559A1 true EP4093559A1 (fr) | 2022-11-30 |
Family
ID=70154674
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21705248.9A Pending EP4093559A1 (fr) | 2020-01-22 | 2021-01-18 | Dispositif de nettoyage de l'event d'une matrice de forgeage et procede de mise en oeuvre de ce dispositif |
Country Status (5)
Country | Link |
---|---|
US (1) | US20230083765A1 (fr) |
EP (1) | EP4093559A1 (fr) |
CN (1) | CN115023302A (fr) |
FR (1) | FR3106288B1 (fr) |
WO (1) | WO2021148748A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN116174638B (zh) * | 2022-12-06 | 2023-09-22 | 江苏珀然股份有限公司 | 一种车轮锻造模具清理装置 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CA2311650A1 (fr) * | 2000-06-14 | 2001-12-14 | Dynamotive Technologies Corporation | Methode et appareil de nettoyage ultrasonique d'une matrice de trefilage |
-
2020
- 2020-01-22 FR FR2000590A patent/FR3106288B1/fr active Active
-
2021
- 2021-01-18 WO PCT/FR2021/050087 patent/WO2021148748A1/fr unknown
- 2021-01-18 EP EP21705248.9A patent/EP4093559A1/fr active Pending
- 2021-01-18 CN CN202180010519.6A patent/CN115023302A/zh active Pending
- 2021-01-18 US US17/794,495 patent/US20230083765A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
FR3106288A1 (fr) | 2021-07-23 |
WO2021148748A1 (fr) | 2021-07-29 |
FR3106288B1 (fr) | 2021-12-17 |
CN115023302A (zh) | 2022-09-06 |
US20230083765A1 (en) | 2023-03-16 |
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