EP1186847B1 - Method for repairing the damage in coatings or the damage caused by erosion - Google Patents
Method for repairing the damage in coatings or the damage caused by erosion Download PDFInfo
- Publication number
- EP1186847B1 EP1186847B1 EP20010116287 EP01116287A EP1186847B1 EP 1186847 B1 EP1186847 B1 EP 1186847B1 EP 20010116287 EP20010116287 EP 20010116287 EP 01116287 A EP01116287 A EP 01116287A EP 1186847 B1 EP1186847 B1 EP 1186847B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coating material
- coating
- barrel
- sio
- damage
- 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.)
- Expired - Lifetime
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
- F41A21/00—Barrels; Gun tubes; Muzzle attachments; Barrel mounting means
- F41A21/22—Barrels which have undergone surface treatment, e.g. phosphating
Definitions
- the invention relates to a method for removing coating and / or erosion damage located on the inner surface of a weapon barrel.
- the invention has for its object to provide a method by which Be coating and erosion damage containing weapons tubes can be repaired in a simple and cost-effective manner, without causing a significant reduction of the supporting pipe cross-section is connected.
- the invention is based essentially on the idea that the defective pipe sections are filled by a corresponding coating material, so that a closed pipe surface is formed.
- the coating process and the coating material are coordinated so that the inner surface of the pipe can be repaired locally, without changing the mechanical, metallographic and metallurgical material properties (Autofrettageeigenschreiben, material composition, microstructure) of the material of the gun barrel.
- the inner surface of the gun barrel can then be mechanically reworked by means of turning, grinding or honing in order to smooth the surface of the repaired areas.
- the coating material can be supplied as a powder, tape or wire and melted by means of flame, detonation, arc or plasma discharge and accelerated to the pipe surface to be coated, where it solidifies to a solid layer.
- the surface of the weapon barrel to be coated / repaired is not melted.
- the plasma discharge or the arc is not transferred to the component. It only serves to melt the filler material. There is no alloy formation. It should even be avoided.
- the coating material is to be selected such that it has a high adhesive strength on the pipe material, not by the propellant charge gases is removed and is not mechanically destroyed due to the pipe expansion and the abrasive load through the floor.
- materials such as SiO 2 or ZrSiO 4, Mg 2 SiO 4 or SiO 2 50 / Zr SiO 4 40 / Al 2 O 3 10 have proven to be suitable as coating materials. Such materials are characterized by very high thermal shock resistance and low thermal expansion. In addition, cracks that occur in the repair site, healed by brief melting of the near-surface areas during the shot. However, it is also possible to use other ceramic or metallic coating materials, such as Fe 64 / Ni 36 and their mixtures, such as WC 90 / Co 10.
- an adhesion promoter can additionally be applied to the workpiece surface to be coated during the application of the coating material.
- Suitable adhesion promoters include, inter alia, molybdenum or nickel alloys.
- the gun barrel is preheated to a total of 200 to 300 ° C in the areas to be coated, since then compressive stresses occur in the respective repair site during solidification and subsequent cooling. These are due to the low thermal expansion coefficients of the ceramic coating materials (eg SiO 2 0.54 ⁇ 10 -6 K -1 ).
- the preheated tube expands more than the coating material. Ie. that it contracts more strongly on cooling, shrinks and thus generates residual compressive stresses in the layer material.
- 1 denotes a section of a weapon barrel whose inner surface is coated with a hard chrome layer 2.
- the chromium layer 2 has flaked off and damaged the weapon barrel 1 by erosion, so that a depression 4 is formed.
- the weapon barrel 1 is first, e.g. using sandblasting, cleaned in the area to be repaired 3. Subsequently, a coating head 5 is inserted into the interior of the weapon barrel 1.
- the coating head 5 is connected via a displacement device 6 to a manipulator device, not shown for reasons of clarity, for translatory and rotational movement.
- the coating head 5 can be, for example, a gas, plasma or welding torch, but also a detonation gun. Both a conduit 7 for supplying energy and a conduit 8 for supplying a protective gas are connected to the coating head 5. In addition, the powder, wire or belt-shaped coating material is fed to the coating head 5 via a corresponding feed device 9.
- the coating head 5 is above the depression 4 positioned and the example of a material of SiO 2 or ZrSiO4, Mg 2 SiO 4 or SiO 2 50 / Zr SiO 4 40 / Al 2 O 3 10 existing coating material is melted and accelerated to be coated to the tube surface.
- the molten coating material 10 strikes the workpiece surface to be repaired, where it forms a solidified closed layer 11. In this case, no melting of the pipe material takes place, so that no structural transformation zone is formed in the pipe material and the mechanical, metallurgical and metallographic properties of the weapon barrel 1 are not affected.
- the process is carried out under a protective gas atmosphere or even in a vacuum in order to prevent a reaction of the molten coating material 10 with the ambient atmosphere.
- the coating head 5 moves to the next damaged pipe region with the aid of the manipulator device, not shown, and likewise fills the corresponding depression with the coating material.
- the coating head 5 Upon completion of the coating of all defective tube portions, the coating head 5 is removed from the gun barrel 1 and the areas filled with coating material 11 are post-processed by a machining process (e.g., turning).
- a machining process e.g., turning
- the invention is not limited to the embodiment described above.
- the acceleration of the particles of the coating material can be supported by the supply of gas.
- the coating head still has a connection for a corresponding gas line.
- the coating head can also be supplied with an adhesion promoter, which is then melted and, together with the coating material, impinges on the surface of the weapon barrel to be coated.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Coating By Spraying Or Casting (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Description
Die Erfindung betrifft ein Verfahren zur Beseitigung von an der inneren Oberfläche eines Waffenrohres befindlichen Beschichtungs- und/oder Erosionsschäden.The invention relates to a method for removing coating and / or erosion damage located on the inner surface of a weapon barrel.
Insbesondere aus Stahl bestehende Waffenrohre großkalibriger Rohrwaffen zeigen beim Verschießen leistungsgesteigerter Munitionsarten aufgrund ihrer beim Abschuß entstehenden hohen Gastemperaturen und Strömungsgeschwindigkeiten starke Erosionen, die das jeweilige Waffenrohr bereits vor Erreichen seiner Ermüdungslebensdauer verschleißen.In particular steel existing weapons tubes large-caliber guns show when shooting performance-enhanced ammunition due to their high temperatures resulting from the launch gas temperatures and flow velocities strong erosion that wear the respective gun barrel before reaching its fatigue life.
Es ist bereits bekannt, die innere Oberfläche von Waffenrohren zwecks Vermeidung von Erosionen mit einer Hartchromschicht zu versehen. Allerdings kommt es bei derartigen verchromten Waffenrohren immer wieder zu einer partiellen Ablösung der Chromschicht. An diesen Chromausbrüchen entstehen dann nach und nach starke Erosionsschäden, so daß auch diese Rohre bereits vor Erreichen ihrer Ermüdungslebensdauer ausgesondert werden müssen.It is already known to provide the inner surface of gun barrels with a hard chrome layer to avoid erosion. However, it comes with such chrome-plated weapon tubes again and again to a partial detachment of the chrome layer. At these chrome outbreaks then gradually caused severe erosion damage, so that these pipes must be discarded before reaching their fatigue life.
Es ist bereits vorgeschlagen worden, das jeweilige Waffenrohr bis in den Bereich, in dem die Chrom- und Erosionsschäden auftreten, aufzubohren und anschließend eine Buchse in den aufgebohrten Bereich zu montieren. Nachteilig bei einem derartigen Verfahren ist allerdings, daß es einerseits zeit- und kostenaufwendig ist und daß andererseits hierdurch der tragende Rohrquerschnitt des Waffenrohres verkleinert wird, was zu einer Reduzierung des zulässigen Maximalgasdruckes bzw. der Ermüdungslebensdauer führt. Außerdem wird das Schwingungsverhalten des jeweiligen Waffenrohres beeinflußt, was sich negativ auf das Treffverhalten der entsprechenden Waffe auswirken kann.It has already been proposed to drill the respective weapon barrel into the area in which the chromium and erosion damage occurs, and then to mount a bush in the drilled area. The disadvantage of such a method, however, is that on the one hand it is time-consuming and costly and on the other hand, this reduces the load-bearing tube cross-section of the weapon barrel, which leads to a reduction of the permissible maximum gas pressure or the fatigue life. In addition, the vibration behavior of the respective barrel is affected, which can negatively affect the meeting behavior of the corresponding weapon.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren anzugeben, mit dem Be schichtungs- und Erosionsschäden aufweisende Waffenrohre auf einfache und kostengünstige Weise repariert werden können, ohne daß damit eine nennenswerte Reduzierung des tragenden Rohrquerschnittes verbunden ist.The invention has for its object to provide a method by which Be coating and erosion damage containing weapons tubes can be repaired in a simple and cost-effective manner, without causing a significant reduction of the supporting pipe cross-section is connected.
Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruchs 1 gelöst. Weitere, besonders vorteilhafte Ausgestaltungen der Erfindung offenbaren die Unteransprüche.This object is achieved by the features of
Die Erfindung beruht im wesentlichen auf dem Gedanken, daß die schadhaften Rohrbereiche durch ein entsprechendes Beschichtungsmaterial ausgefüllt werden, so daß eine geschlossene Rohroberfläche entsteht. Das Beschichtungsverfahren und der Beschichtungswerkstoff sind dabei derart aufeinander abgestimmt, daß die Rohrinnenoberfläche lokal repariert werden kann, ohne daß sich die mechanischen, metallographischen und metallurgischen Werkstoffeigenschaften (Autofrettageeigenspannungen, Werkstoffzusammensetzung, Gefüge) des Werkstoffes des Waffenrohres verändern. Nach dem Aufbringen des Beschichtungsmaterials kann die innere Oberfläche des Waffenrohres dann mittels Drehen, Schleifen oder Honen mechanisch nachbearbeitet werden, um die Oberfläche der reparierten Bereiche zu glätten.The invention is based essentially on the idea that the defective pipe sections are filled by a corresponding coating material, so that a closed pipe surface is formed. The coating process and the coating material are coordinated so that the inner surface of the pipe can be repaired locally, without changing the mechanical, metallographic and metallurgical material properties (Autofrettageeigenspannungen, material composition, microstructure) of the material of the gun barrel. After application of the coating material, the inner surface of the gun barrel can then be mechanically reworked by means of turning, grinding or honing in order to smooth the surface of the repaired areas.
Der Beschichtungswerkstoff kann als Pulver, Band oder Draht zugeführt und mittels Flamme, Detonation, Lichtbogen oder Plasmaentladung aufgeschmolzen und auf die zu beschichtende Rohroberfläche beschleunigt werden, wo er zu einer festen Schicht erstarrt. Im Gegensatz zur früheren Druckschrift DE 199 19 687.7 wird die zu beschichtende / zu reparierende Oberfläche des Waffenrohres nicht aufgeschmolzen. Die Plasmaentladung bzw. der Lichtbogen wird nicht auf das Bauteil übertragen. Er dient nur dazu, den Zusatzwerkstoff aufzuschmelzen. Es findet keine Legierungsbildung statt. Sie soll sogar vermieden werden. Der Beschichtungswerkstoff ist dabei derart zu wählen, daß er eine hohe Haftfestigkeit auf dem Rohrwerkstoff besitzt, nicht durch die Treibladungsgase abgetragen wird und aufgrund der Rohrdehnung und der abrasiven Belastung durch das Geschoß nicht mechanisch zerstört wird.The coating material can be supplied as a powder, tape or wire and melted by means of flame, detonation, arc or plasma discharge and accelerated to the pipe surface to be coated, where it solidifies to a solid layer. In contrast to the earlier document DE 199 19 687.7, the surface of the weapon barrel to be coated / repaired is not melted. The plasma discharge or the arc is not transferred to the component. It only serves to melt the filler material. There is no alloy formation. It should even be avoided. The coating material is to be selected such that it has a high adhesive strength on the pipe material, not by the propellant charge gases is removed and is not mechanically destroyed due to the pipe expansion and the abrasive load through the floor.
Als Beschichtungswerkstoffe haben sich insbesondere Werkstoffe wie SiO2 oder ZrSiO4, Mg2 SiO4 oder SiO2 50 / Zr SiO4 40 / Al2O3 10 bewährt. Derartige Werkstoffe zeichnen sich durch sehr hohe Thermoschockbeständigkeit und eine geringe Wärmeausdehnung aus. Außerdem werden Risse, die in der Reparaturstelle entstehen, durch kurzzeitiges Anschmelzen der oberflächennahen Bereiche während des Schusses ausgeheilt. Es können aber auch andere keramische oder metallische Beschichtungswerkstoffe wie Fe 64 / Ni 36 und deren Gemenge wie WC 90 / Co 10 verwendet werden.In particular, materials such as SiO 2 or ZrSiO 4, Mg 2 SiO 4 or SiO 2 50 / Zr SiO 4 40 / Al 2 O 3 10 have proven to be suitable as coating materials. Such materials are characterized by very high thermal shock resistance and low thermal expansion. In addition, cracks that occur in the repair site, healed by brief melting of the near-surface areas during the shot. However, it is also possible to use other ceramic or metallic coating materials, such as Fe 64 / Ni 36 and their mixtures, such as WC 90 / Co 10.
Zur Verbesserung der Haftung des Beschichtungswerkstoffes an dem Waffenrohr kann zusätzlich ein Haftvermittler bei der Aufbringung des Beschichtungswerkstoffes mit auf die zu beschichtende Werkstückoberfläche aufgebracht werden. Als derartige Haftvermittler kommen unter anderem Molybdän- oder Nickel-Legierungen in Betracht.In order to improve the adhesion of the coating material to the gun barrel, an adhesion promoter can additionally be applied to the workpiece surface to be coated during the application of the coating material. Suitable adhesion promoters include, inter alia, molybdenum or nickel alloys.
Als vorteilhaft hat es sich ferner erwiesen, wenn das Waffenrohr insgesamt oder in den zu beschichtenden Bereichen auf 200 bis 300°C vorgewärmt wird, da dann bei der Erstarrung und anschließenden Abkühlung Druckeigenspannungen in der jeweiligen Reparaturstelle entstehen. Diese sind auf die geringen Wärmeausdehnungskoeffizienten der keramischen Schichtwerkstoffe zurückzuführen (z. B. SiO2 0,54 x 10-6 K-1). Das vorgewärmte Rohr dehnt sich stärker als der Schichtwerkstoff. D. h. daß er sich beim Erkalten stärker zusammenzieht, schrumpft und so Druckeigenspannungen im Schichtwerkstoff erzeugt.It has also proved to be advantageous if the gun barrel is preheated to a total of 200 to 300 ° C in the areas to be coated, since then compressive stresses occur in the respective repair site during solidification and subsequent cooling. These are due to the low thermal expansion coefficients of the ceramic coating materials (eg SiO 2 0.54 × 10 -6 K -1 ). The preheated tube expands more than the coating material. Ie. that it contracts more strongly on cooling, shrinks and thus generates residual compressive stresses in the layer material.
Zweckmäßig kann es sein, mehrere Schichten gleicher oder unterschiedlicher Schichtwerkstoffe nacheinander auf die schadhaften Rohrbereiche aufzutragen.It may be expedient to apply several layers of the same or different layer materials one after the other onto the defective tube regions.
Sofern erforderlich, können die Reparaturarbeiten an dem gleichen Waffenrohr mehrmals wiederholt werden.If necessary, the repair work on the same barrel can be repeated several times.
Weitere Einzelheiten und Vorteile der Erfindung ergeben sich aus den folgenden anhand von Figuren erläuterten Ausführungsbeispielen. Es zeigen:
- Fig.1
- den Querschnitt eines zu beschichtenden Waffenrohrabschnittes während der Durchführung der Beschichtung;
- Fig.2
- den in Fig.1 dargestellten Waffenrohrabschnitt nach Durchführung der Beschichtung und
- Fig.3
- den in Fig.2 dargestellten Rohrabschnitt nach einer mechanischen Nachbearbeitung.
- Fig.1
- the cross section of a weapon tube section to be coated during the performance of the coating;
- Fig.2
- the weapon tube section shown in Figure 1 after performing the coating and
- Figure 3
- the pipe section shown in Figure 2 after a mechanical reworking.
In Fig.1 ist mit 1 ein Abschnitt eines Waffenrohres bezeichnet, dessen innere Oberfläche mit einer Hartchromschicht 2 beschichtet ist. In dem mit 3 bezeichneten Bereich ist die Chromschicht 2 abgeplatzt und das Waffenrohr 1 durch Erosion beschädigt, so daß eine Vertiefung 4 entstanden ist.In FIG. 1, 1 denotes a section of a weapon barrel whose inner surface is coated with a
Zur Beseitigung der Vertiefung 4 wird das Waffenrohr 1 zunächst, z.B. mittels Sandstrahlen, in dem zu reparierenden Bereich 3 gereinigt. Anschließend wird ein Beschichtungskopf 5 in das Innere des Waffenrohres 1 eingeführt. Der Beschichtungskopf 5 ist hierzu über eine Verfahreinrichtung 6 mit einer aus Übersichtlichkeitsgründen nicht dargestellten Manipulatoreinrichtung zur translatorischen und rotatorischen Bewegung verbunden.To remove the recess 4, the
Bei dem Beschichtungskopf 5 kann es sich beispielsweise um einen Gas-, Plasma- oder Schweißbrenner, aber auch um eine Detonationskanone handeln. Mit dem Beschichtungskopf 5 sind sowohl eine Leitung 7 zur Energiezufuhr als auch eine Rohrleitung 8 zur Zufuhr eines Schutzgases verbunden. Außerdem wird der pulver-, draht- oder bandförmige Beschichtungswerkstoff über eine entsprechende Zuführeinrichtung 9 dem Beschichtungskopf 5 zugeführt.The
Zur Reparatur des Waffenrohres 1 wird der Beschichtungskopf 5 über der Vertiefung 4 positioniert und der z.B. aus einem Werkstoff aus SiO2 oder ZrSiO4, Mg2 SiO4 oder SiO2 50 / Zr SiO4 40 / Al2O3 10 bestehende Beschichtungswerkstoff wird aufgeschmolzen und auf die zu beschichtende Rohroberfläche beschleunigt. Der schmelzflüssige Beschichtungswerkstoff 10 trifft auf die zu reparierende Werkstückoberfläche und bildet dort eine erstarrte geschlossene Schicht 11. Hierbei findet kein Aufschmelzen des Rohrwerkstoffes statt, so daß sich keine Gefügeumwandlungszone im Rohrwerkstoff ausbildet und die mechanischen, metallurgischen und metallographischen Eigenschaften des Waffenrohres 1 nicht beeinflußt werden.To repair the
Das Verfahren wird unter Schutzgasatmosphäre oder auch im Vakuum durchgeführt, um eine Reaktion des schmelzflüssigen Beschichtungswerkstoffes 10 mit der Umgebungsatmosphäre zu verhindern.The process is carried out under a protective gas atmosphere or even in a vacuum in order to prevent a reaction of the
Nach dem Auffüllen der Vertiefung 4 (Fig.2) fährt der Beschichtungskopf 5 mit Hilfe der nicht dargestellten Manipulatoreinrichtung den nächsten schadhaften Rohrbereich an und füllt die entsprechende Vertiefung ebenfalls mit dem Beschichtungswerkstoff auf.After filling the depression 4 (FIG. 2), the
Nach Abschluß der Beschichtung aller schadhaften Rohrbereiche wird der Beschichtungskopf 5 aus dem Waffenrohr 1 entfernt und die mit Beschichtungswerkstoff 11 aufgefüllten Bereiche werden mittels eines spanabhebenden Verfahrens (z.B. Drehen) nachbearbeitet.Upon completion of the coating of all defective tube portions, the
Die Erfindung ist selbstverständlich nicht auf das vorstehend beschriebene Ausführungsbeispiel beschränkt. So kann die Beschleunigung der Partikel des Beschichtungswerkstoffes durch die Zufuhr von Gas unterstützt werden. In diesem Fall weist der Beschichtungskopf noch einen Anschluß für eine entsprechende Gasleitung auf. Ferner kann dem Beschichtungskopf auch ein Haftvermittler zusätzlich zugeführt werden, der dann geschmolzen und zusammen mit dem Beschichtungswerkstoff auf die zu beschichtende Oberfläche des Waffenrohres auftrifft.Of course, the invention is not limited to the embodiment described above. Thus, the acceleration of the particles of the coating material can be supported by the supply of gas. In this case, the coating head still has a connection for a corresponding gas line. Furthermore, the coating head can also be supplied with an adhesion promoter, which is then melted and, together with the coating material, impinges on the surface of the weapon barrel to be coated.
- 11
- Waffenrohr, AbschnittGun barrel, section
- 22
- Hartchromschicht, ChromschichtHard chrome layer, chrome layer
- 33
- Bereich, RohrbereichArea, pipe area
- 44
- Vertiefungdeepening
- 55
- Beschichtungskopf, VorrichtungCoating head, device
- 66
- Verfahreinrichtungtraversing
- 77
- Leitungmanagement
- 88th
- Rohrleitungpipeline
- 99
- Zuführeinrichtungfeeding
- 1010
- BeschichtungswerkstoffCoating material
- 1111
- Beschichtungswerkstoff, SchichtCoating material, layer
Claims (5)
- Method for repairing coating and/or erosion damage on the inner surface of a weapon barrel (1), characterized in that after the inner surface of the weapon barrel (1) has been cleaned, the damaged barrel regions (3) are filled by a suitable coating material (11), and in that the inner surface of the weapon barrel (1) is then remachined by turning, grinding or honing.
- Method according to Claim 1, characterized in that the coating material is melted in a suitable apparatus (5) by means of a flame, a detonation, an arc or a plasma discharge and is accelerated onto the workpiece surface to be coated.
- Method according to Claim 2, characterized in that the coating material is fed to the apparatus in powder, strip or wire form.
- Method according to Claim 1 or 2, characterized in that the coating material used is a material such as SiO2 or ZrSiO4, Mg2SiO4 or SiO2 50/ZrSiO4 40/Al2O3 10.
- Method according to one of Claims 1 to 3, characterized in that a plurality of layers of the same or different layer materials are successively applied to the damaged barrel regions (3).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10041114 | 2000-08-22 | ||
| DE2000141114 DE10041114A1 (en) | 2000-08-22 | 2000-08-22 | Process for removing coating and / or erosion damage |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1186847A2 EP1186847A2 (en) | 2002-03-13 |
| EP1186847A3 EP1186847A3 (en) | 2003-11-19 |
| EP1186847B1 true EP1186847B1 (en) | 2006-03-29 |
Family
ID=7653341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20010116287 Expired - Lifetime EP1186847B1 (en) | 2000-08-22 | 2001-07-05 | Method for repairing the damage in coatings or the damage caused by erosion |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1186847B1 (en) |
| DE (2) | DE10041114A1 (en) |
| ES (1) | ES2258997T3 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2499968C1 (en) * | 2012-07-13 | 2013-11-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Самарский государственный технический университет" | Method of small arms barrel hardening |
| RU2706995C1 (en) * | 2019-06-24 | 2019-11-21 | Общество с ограниченной ответственностью "Уральский инженерный центр" (ООО "УИЦ") | Method of cleaning, recovery and hardening of the internal cylindrical surface of the rifled barrel of the weapon and device for its implementation |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10328450A1 (en) | 2003-06-25 | 2005-01-20 | Rheinmetall W & M Gmbh | Method for eliminating coating and / or erosion damage |
| CN106435457B (en) * | 2016-10-08 | 2019-04-05 | 无锡鸿海龙船机有限公司 | A kind of increasing of anti scuffing hydrocoupling inner sleeve rubs method |
| DE102016119984A1 (en) * | 2016-10-20 | 2018-04-26 | Röder Maschinenbau GmbH | Method and use for the reprocessing of wear parts of blast cutters and component for receiving an insert |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1521743C3 (en) * | 1965-04-09 | 1976-01-08 | Harry Fairlawn N.J. Friedman (V.St.A.) | Means and processes for dyeing gun barrels blue |
| DE1281771B (en) * | 1968-04-18 | 1968-10-31 | Berghaus Elektrophysik Anst | Method and device for ionitriding iron and steel pipes by means of an electric glow discharge |
| GB2070741B (en) * | 1980-02-06 | 1984-02-15 | Secr Defence | Reducing gun erosion by transfer and diffusion coating |
| IL120140A (en) * | 1997-02-04 | 2001-01-11 | Israel Atomic Energy Comm | Thermal spray coating element and method and apparatus for using same |
| DE19919687A1 (en) * | 1999-04-30 | 2000-11-02 | Rheinmetall W & M Gmbh | Process for coating the inside of a gun barrel |
-
2000
- 2000-08-22 DE DE2000141114 patent/DE10041114A1/en not_active Withdrawn
-
2001
- 2001-07-05 EP EP20010116287 patent/EP1186847B1/en not_active Expired - Lifetime
- 2001-07-05 DE DE50109351T patent/DE50109351D1/en not_active Expired - Lifetime
- 2001-07-05 ES ES01116287T patent/ES2258997T3/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2499968C1 (en) * | 2012-07-13 | 2013-11-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Самарский государственный технический университет" | Method of small arms barrel hardening |
| RU2706995C1 (en) * | 2019-06-24 | 2019-11-21 | Общество с ограниченной ответственностью "Уральский инженерный центр" (ООО "УИЦ") | Method of cleaning, recovery and hardening of the internal cylindrical surface of the rifled barrel of the weapon and device for its implementation |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1186847A3 (en) | 2003-11-19 |
| ES2258997T3 (en) | 2006-09-16 |
| DE50109351D1 (en) | 2006-05-18 |
| EP1186847A2 (en) | 2002-03-13 |
| DE10041114A1 (en) | 2002-03-07 |
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