# US 9,752,235 B2 · Workpiece comprising a laminate to protect against an impact stress

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- Number: US 9,752,235 B2
- Document ID: US9752235B2
- Status: Granted
- Kind: B2
- Application number: 14/235,454
- Filed: 2012-07-26
- Published: 2014-10-02
- Granted: 2017-09-05
- Earliest claimed: 2011-07-29
- Assignees: Fachhochschule Muenster
- Applicants: Juergen Peterseim; Denis Knust; Gerald Beermann
- Inventors: Juergen Peterseim; Denis Knust; Gerald Beermann
- Web page: https://patentgrep.com/patent/US9752235B2

## CPC

- C22C 19/00: Alloys based on nickel or cobalt
- B22F 7/04: with one or more layers not made from powder, e.g. made from solid metal
- B23K 35/025: {Pastes, creams or slurries}
- B23K 35/304: {with Cr as the next major constituent}
- B23K 35/3053: {Fe as the principal constituent}
- B32B 15/01: all layers being exclusively metallic {(making layered metal workpieces by pressure cladding B23K20/22; making coatings with a metallic material characterised by its composition C23C30/00)}
- B32B 15/011: {all layers being formed of iron alloys or steels}
- B32B 15/012: {one layer being formed of an iron alloy or steel, another layer being formed of aluminium or an aluminium alloy}
- B32B 15/015: {the said other metal being copper or nickel or an alloy thereof}
- B32B 15/04: comprising metal as the main or only constituent of a layer, {which is} next to another layer of {the same or of} a {different material (next to a bituminous or tarry layer B32B11/08; next to a water-setting substance layer B32B13/06; next to a glass layer B32B17/061; next to a cellulosic plastic layer B32B23/042)}
- B32B 15/043: {of metal (B32B15/01 takes precedence)}
- B32B 15/18: comprising iron or steel {(B32B15/011, B32B15/012 and B32B15/013 take precedence)}
- B65D 51/00: Closures not otherwise provided for
- C22C 19/03: based on nickel
- C22C 19/05: with chromium
- C22C 38/18: containing chromium
- C23D 5/02: by wet methods
- C23D 7/00: Treating the coatings, e.g. drying before burning
- B22F 1/107: containing organic material comprising solvents, e.g. for slip casting
- B22F 2007/047: {non-pressurised baking of the paste or slurry containing metal powder}
- Y10T 428/12: All metal or with adjacent metals
- Y10T 428/12014: having metal particles
- Y10T 428/12028: Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, etc.]
- Y10T 428/1266: O, S, or organic compound in metal component
- Y10T 428/12847: Cr-base component
- Y10T 428/12854: Next to Co-, Fe-, or Ni-base component
- Y10T 428/12944: Ni-base component
- Y10T 428/12965: Both containing 0.01-1.7% carbon [i.e., steel]
- Y10T 428/12972: Containing 0.01-1.7% carbon [i.e., steel]
- Y10T 428/12979: Containing more than 10% nonferrous elements [e.g., high alloy, stainless]
- C22C: ALLOYS (treatment of alloys C21D, C22F)
- B22F: WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER (making alloys by powder metallurgy C22C); APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B23K: SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B65D: CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- C23D: ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A method for applying a protective layer to protect against an impact stress includes mixing a sealing alloy in a powder form with a binder and water to form a pasty compound, applying the pasty compound on a surface to be protected, drying the applied pasty compound, and heating the dried applied pasty compound to a temperature of at least 800° C.

## Claims

### Claim 1

A workpiece comprising a laminate to protect against an impact stress, the laminate being applied by a method comprising:
mixing a sealing alloy in a powder form with a binder and water to form a pasty compound;
applying a first coating of the pasty compound on a surface to be protected;
applying a layer of a solid material to the first coating of the applied pasty compound;
applying a second coating of the pasty compound on a surface of the layer of the solid material so as to form a laminate which comprises at least two layers of the pasty material and at least one layer of the solid material, the at least one layer of the solid material being arranged between the two layers of the pasty compound; and
heating the laminate to a temperature of at least 800° C.,
wherein, the layer of the solid material is steel.

### Claim 2 (depends on 1)

The workpiece as recited in claim 1, wherein the workpiece is a locking box or a lock body of a lock or components thereof.

### Claim 3

A workpiece comprising a laminate to protect against an impact stress, the laminate being applied by a method comprising:
mixing a sealing alloy in a powder form with a binder and water to form a pasty compound;
applying a first coating of the pasty compound on a surface to be protected;
applying a layer of a solid material to the first coating of the applied pasty compound;
applying a second coating of the pasty compound on a surface of the layer of the solid material so as to form a laminate which comprises at least two layers of the pasty material and at least one layer of the solid material, the at least one layer of the solid material being arranged between the two layers of the pasty compound; and
heating the laminate to a temperature of at least 800° C.,
wherein,
the pasty compound comprises,
about 50 to <100 wt.-% of the sealing alloy, the sealing alloy being a chromium-containing nickel-based alloy comprising 0-4 wt.-% boron, 0-4 wt.-% silicon, and 0-1 wt.-% iron,
>0 to 40 wt.-% of a binder, the binder being an enamel selected from a fusion mixture of silicates, borates and fluorides and a metal selected from at least one of sodium, potassium, lead and aluminum, and
>0 to <10 wt.-% water,
the wt.-%'s of the sealing alloy, the binder and the water adding up to 100 wt.-%, and
the layer of the solid material is steel.

### Claim 4 (depends on 3)

The workpiece as recited in claim 3, wherein the workpiece is a locking box or a lock body of a lock or components thereof.