EP3969204A1 - Coated metal substrates that are susceptible to wear, and method for the manufacture thereof - Google Patents
Coated metal substrates that are susceptible to wear, and method for the manufacture thereofInfo
- Publication number
- EP3969204A1 EP3969204A1 EP20726089.4A EP20726089A EP3969204A1 EP 3969204 A1 EP3969204 A1 EP 3969204A1 EP 20726089 A EP20726089 A EP 20726089A EP 3969204 A1 EP3969204 A1 EP 3969204A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tungsten
- molybdenum
- filling chamber
- alloy
- wear
- 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
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/2015—Means for forcing the molten metal into the die
- B22D17/2023—Nozzles or shot sleeves
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
- C23C4/08—Metallic material containing only metal elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C27/00—Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/00 or C22C16/00
- C22C27/04—Alloys based on tungsten or molybdenum
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
- C23C4/073—Metallic material containing MCrAl or MCrAlY alloys, where M is nickel, cobalt or iron, with or without non-metal elements
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/131—Wire arc spraying
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/134—Plasma spraying
Definitions
- the invention relates to coated, wear-prone metal substrates and methods for their production.
- the invention relates to a modified filling chamber for a die casting machine.
- the inner surface of the filling chamber of a die casting machine is in the area of
- Feed opening most affected by wear The machine filling of hot casting material, such as. B. liquid aluminum, through the feed opening, this always hits the same point below the feed opening on the inner surface of the filling chamber. If the filling chamber has been used for a long time, this can be used for a long time.
- a filling chamber which consists of a casing body with a removable cylindrical insert.
- the insert extends from the outer end of the filling chamber to axially inside the feed opening and occurs at its inner end in a narrow ring area with its peripheral surface with the
- Inner wall of the filling chamber in contact, while at its outer end it is guided coaxially to the filling chamber by a centering ring engaging between its outer circumference and the inner wall of the filling chamber.
- Die-casting machine with a feed opening for liquid casting material in which in the filling chamber wall in the area opposite the feed opening a Cooling device is provided.
- the cooling device is formed from a disk which can be inserted into the filling chamber wall from the outside and which has at least one
- a guide channel for a coolant is provided. This measure is intended, among other things, to extend the service life of a filling chamber insert.
- EP 3 184 203 A1 also discloses a filling chamber for a die casting machine, the cylindrical inner surface of which serves as a sliding surface for a pressure piston and which has a feed opening for liquid casting material as well as a removable cylindrical insert, on the inner surface of which the pressure piston slides along and which has a radial, is provided with the feed opening of the filling chamber in communication opening of the jacket filling.
- the inner surface of this removable insert consists at least in part of molybdenum or a molybdenum alloy.
- the removable insert consists of a metallic casing (steel) and an internal socket made of molybdenum or a molybdenum alloy (Mo / Mo alloy).
- Feed opening or the filling chamber is used and which can be exchanged for a new insert when wear occurs, is a relatively quick remedy in the most common cases of wear of the sliding surface for the pressure piston.
- WO 00/10752 A1 relates to a casting tool for casting molded parts
- Non-ferrous metals e.g. from Al or Mg.
- the mold is made of one
- Heavy metal alloy e.g. W alloy
- the contact side of the molded part is coated accordingly.
- Heavy metal alloy used in the form of a sintered element used in the form of a sintered element.
- US 2017/0266719 A1 discloses die casting systems and corresponding casting methods. Certain parts of the system are provided with coatings that react far less chemically with the metals to be cast (such as Al, Cu, Ti and their alloys) than the iron alloys used in the prior art.
- the metals to be cast such as Al, Cu, Ti and their alloys
- the filling chamber in order to make the casting process as efficient as possible and without major interruptions.
- Filling chamber is completely or partially coated with tungsten or a tungsten alloy. This also applies generally to metal substrates that are prone to wear.
- the filling chamber which is usually made of steel, is preferably completely on its inner surface, but at least in the filling area, with tungsten or a
- the invention also encompasses lining the inner surface of an insert for the filling chamber, which is preferably made of steel, with tungsten or a tungsten alloy, which in turn can be done completely or partially.
- the present invention therefore comprises a filling chamber for a die casting machine, the cylindrical inner surface of which serves as a sliding surface for a pressure piston and which has a feed opening for liquid casting material, e.g. Aluminum at one
- the filling chamber has an insert, preferably made of steel, which is provided with an opening on its lateral surface that is connected to the feed opening of the filling chamber.
- the inner surface of the filling chamber or the inner surface of the said insert completely or partially, then preferably in the filling area, provided or coated with tungsten or a tungsten alloy.
- the insert has about% of the length and about half the wall thickness of the filling chamber.
- the insert according to the invention in contrast to the insert described in EP 3 184 203 A1, is not an interchangeable socket in the form of a sleeve system in which a molybdenum insert is inserted precisely into an outer sleeve made of steel, but the inner surface of the invention Insert, which is usually made of steel, is wholly or partly with tungsten or a
- the filling chamber according to the invention can correspond to that from EP 3 184 203 A1.
- Tungsten or a tungsten alloy is used as the coating material for the inner surface of the filling chamber or the insert according to the invention, the inner surface of the filling chamber and insert preferably being completely coated.
- the alloy can be a binary, ternary or quaternary or an alloy with further (metallic) components. Examples of this are WNiFe alloys with preferably more than 50% by weight of tungsten (W) or WMoNiFe alloys in which the sum of W and Mo is more than 50% by weight of the finished alloy.
- Particularly suitable alloys contain more than 50% by weight of tungsten.
- Particularly suitable forms for tungsten and tungsten alloys are wire and powder forms. The production takes place according to the person skilled in the art
- Tungsten alloys from various manufacturers and metal trading companies, etc. a. offered on the Internet.
- Coating materials also apply to the coating of metal substrates in general.
- the surface coating process of thermal spraying has proven to be particularly suitable for the purposes of the invention.
- this method leads to a very strong hardening of the sprayed layer of typically> 800 HV Vickers hardness, while e.g. Otherwise tungsten alloys only have a hardness between 280 and 400 HV.
- the surface coatings applied by thermal spraying are also characterized by e.g. due to their special resistance to liquid aluminum and are therefore preferred and particularly suitable for use in aluminum die-casting systems.
- Thermal spray processes include the following processes:
- the invention thus also relates to the coating method with which the materials are applied.
- the methods of thermal spraying are
- the surface condition also has an influence on quality features such as adhesive strength.
- Electric arcs arc spraying
- plasma jets plasma spraying
- Fuel-oxygen flame or fuel-oxygen high-speed flame (conventional and high-speed flame spraying), fast, preheated gases (cold gas spraying) and laser beam (laser beam spraying).
- the spraying processes are classified according to these criteria.
- the preferred method is wire arc spraying.
- Plasma spraying is particularly suitable for powdery W / W alloys.
- the applied coatings lead.
- thermal spraying processes and also the process for welding the coating materials on are preferred according to the invention.
- the thermal spray processes offer a wide range of applications for
- arc spraying is particularly preferred according to the invention, which is used both in the so-called two-wire process and particularly preferably in the so-called single-wire process.
- the preferred coating material is tungsten or tungsten alloys. The preferred coating or spraying process is described in greater detail below by way of example with reference to FIG. 1, without the subject matter of the present invention
- Figure 1 shows the spray head of a
- the electrode is 4
- the arc is between two wires and in
- the plasma 4 consists of a gas mixture of protective gas 1, that is argon or argon / hydrogen (Ar / ArFh) with atomizer gas 3.
- the electrode 1 remains exclusively surrounded by protective gas 2 and thus protected.
- the arc 4 melts the spray wire 7 before the atomizing gas 5 atomizes the melted droplets of the spray wire 7 at very high pressure or at very high speed.
- the atomized spray wire with atomizer and protective gas is with
- Reference numeral 8 denotes.
- the atomizer gas flow does not have to be as with the
- Plasma welding run in a ring around the shielding gas 2, it can e.g. can also be flowed in through nozzles. In this case, the one shown in FIG.
- Atomizer gas nozzle 6 is omitted and replaced by individual nozzles.
- the spatial separation between electrode 1 and wire 7, with the electrode 1 being able to rotate around wire 7, enables cheaper nitrogen gas to be used instead of noble gases.
- the hardness can be increased to approx. 600 HV compared to the starting material with approx. 300 HV. It has been shown that with air as the atomizer gas 5, a further substantial increase in hardness to approx. 900 HV can be achieved.
- currents in the range of 60-159 A are preferably used.
- the present invention results in particular in longer service lives of the heavily used filling chamber and thus also in longer service lives of a
- corresponding die casting system and comprises a coated filling chamber or a corresponding insert, a method for coating these components, the correspondingly equipped die casting system and the use of tungsten or tungsten alloys for coating (wholly or partially) the filling chamber or filling chamber insert.
- Metal substrates coated according to the invention in general.
- W / W alloys are less brittle and they are also less sensitive to oxidation.
- Thermal spraying preferred according to the invention allows not only an insert to be protected, but the entire filling chamber.
- the injection molding hardens the materials, which means not just one
- welding or welding of a W / W alloy onto the substrate to be protected also improves the thermal, chemical and mechanical properties of its (coated) surface.
- the hardness of the welded-on W / W alloy is also significantly improved compared to the normal value, but usually does not reach the values that can be achieved by thermal spraying.
- the welding is carried out with the usual welding processes such as TIG, MIG, MAG welding.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Coating By Spraying Or Casting (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019112586.3A DE102019112586A1 (en) | 2019-05-14 | 2019-05-14 | Modified filling chamber for a die casting machine |
PCT/EP2020/063439 WO2020229588A1 (en) | 2019-05-14 | 2020-05-14 | Coated metal substrates that are susceptible to wear, and method for the manufacture thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3969204A1 true EP3969204A1 (en) | 2022-03-23 |
Family
ID=70738558
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20726089.4A Pending EP3969204A1 (en) | 2019-05-14 | 2020-05-14 | Coated metal substrates that are susceptible to wear, and method for the manufacture thereof |
Country Status (9)
Country | Link |
---|---|
US (1) | US20220243313A1 (en) |
EP (1) | EP3969204A1 (en) |
JP (1) | JP2022532658A (en) |
KR (1) | KR20220020254A (en) |
CN (1) | CN113966255A (en) |
BR (1) | BR112021022625A2 (en) |
DE (1) | DE102019112586A1 (en) |
MX (1) | MX2021013760A (en) |
WO (1) | WO2020229588A1 (en) |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3786552A (en) * | 1971-06-30 | 1974-01-22 | Mitsubishi Metal Mining Co Ltd | Method of manufacturing a composite bimetallic sleeve for a die-casting machine |
US4853513A (en) * | 1988-04-28 | 1989-08-01 | The Perkin-Elmer Corporation | Arc spray gun for coating confined areas |
GB2227027A (en) * | 1989-01-14 | 1990-07-18 | Ford Motor Co | Plasma arc spraying of metal onto a surface |
US5296667A (en) * | 1990-08-31 | 1994-03-22 | Flame-Spray Industries, Inc. | High velocity electric-arc spray apparatus and method of forming materials |
DE4229338C2 (en) | 1992-09-02 | 2000-07-06 | Hugo Kunz | Filling chamber for a die casting machine |
US6001426A (en) * | 1996-07-25 | 1999-12-14 | Utron Inc. | High velocity pulsed wire-arc spray |
DE19838561A1 (en) * | 1998-08-25 | 2000-03-02 | Wolfram Ind Mbh Ges | Casting mold for casting molded parts made of non-ferrous metals |
US6534196B2 (en) * | 2001-02-26 | 2003-03-18 | Cincinnati Thermal Spray | Refractory metal coated articles for use in molten metal environments |
DE10205246B4 (en) | 2002-02-08 | 2004-04-15 | Wieland-Werke Ag | Filling chamber for a die casting machine |
US20110008532A1 (en) * | 2007-12-21 | 2011-01-13 | Mold-Masters (2007) Limited | Method of manufacturing hot-runner component and hot-runner components thereof |
CN101564767A (en) * | 2009-06-01 | 2009-10-28 | 燕山大学 | Electrode material with anti-corrosion coating formed on surface of die-casting aluminum metal die |
US9731348B1 (en) * | 2012-03-30 | 2017-08-15 | Brunswick Corporation | Method and apparatus for avoiding erosion in a high pressure die casting shot sleeve for use with low iron aluminum silicon alloys |
US20160024628A1 (en) * | 2014-07-24 | 2016-01-28 | Scoperta, Inc. | Chromium free hardfacing materials |
AT14988U1 (en) * | 2015-10-05 | 2016-10-15 | Plansee Se | Component of a plastic processing machine |
DE102015016756A1 (en) * | 2015-12-23 | 2017-06-29 | Wieland-Werke Ag | Filling chamber for a die casting machine |
US20170266719A1 (en) * | 2016-03-21 | 2017-09-21 | Purdue Research Foundation | Hot-chamber die casting systems and methods |
US10556269B1 (en) * | 2017-03-29 | 2020-02-11 | United Technologies Corporation | Apparatus for and method of making multi-walled passages in components |
KR102463833B1 (en) * | 2017-12-13 | 2022-11-07 | 현대자동차주식회사 | Wear resistance coated friction part and coating method thereof |
CN108044079B (en) * | 2017-12-22 | 2020-03-17 | 西安交通大学 | Die-casting die for high-strength alloy and heat-resistant ceramic laminated coating and preparation method thereof |
-
2019
- 2019-05-14 DE DE102019112586.3A patent/DE102019112586A1/en active Pending
-
2020
- 2020-05-14 CN CN202080043684.7A patent/CN113966255A/en active Pending
- 2020-05-14 KR KR1020217037267A patent/KR20220020254A/en active Search and Examination
- 2020-05-14 EP EP20726089.4A patent/EP3969204A1/en active Pending
- 2020-05-14 BR BR112021022625A patent/BR112021022625A2/en unknown
- 2020-05-14 MX MX2021013760A patent/MX2021013760A/en unknown
- 2020-05-14 JP JP2021568374A patent/JP2022532658A/en active Pending
- 2020-05-14 WO PCT/EP2020/063439 patent/WO2020229588A1/en unknown
- 2020-05-14 US US17/610,937 patent/US20220243313A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
CN113966255A (en) | 2022-01-21 |
DE102019112586A1 (en) | 2020-11-19 |
JP2022532658A (en) | 2022-07-15 |
US20220243313A1 (en) | 2022-08-04 |
KR20220020254A (en) | 2022-02-18 |
BR112021022625A2 (en) | 2022-01-04 |
MX2021013760A (en) | 2022-02-21 |
WO2020229588A1 (en) | 2020-11-19 |
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