Shaped charge liner, method of making same, and shaped charge incorporating same

Patent metadata

Field	Value
Publication number	US-9862027-B1
Application number	US-201715499408-A
Country	US
Kind code	B1
Filing date	Apr 27, 2017
Priority date	Jan 12, 2017
Publication date	Jan 9, 2018
Grant date	Jan 9, 2018

Abstract

A shaped charge liner including a composition of powders. The composition may include one or more of an aluminum metal powder and a titanium metal powder, a bronze metal powder, a tungsten metal powder and a graphite powder. Each powder of the composition may include grain size ranges that are different from one or more other powder grain size ranges. The bronze metal powder may include two or more different grain size ranges, and in some instances three or four different grain size ranges. A method of making the shaped charge liner and shaped charge with such liner having the composition of powders is also disclosed, as is a shaped charge including such shaped charge liner.

First claim

What is claimed is:

1. A shaped charge liner having a composition comprising metal powders, the composition comprising:
one or more of an aluminum metal powder and a titanium metal powder, wherein each of the aluminum metal powder and the titanium metal powder comprise a grain size range from 50 micrometers to 150 micrometers;
a bronze metal powder comprising two or more different grain size ranges, the grain size ranges being selected from the ranges comprising 50 micrometers to 150 micrometers, 100 micrometers to 124 micrometers, 125 micrometers to 159 micrometers, 160 micrometers to 179 micrometers, and 180 micrometers to 250 micrometers;
a tungsten metal powder comprising a grain size up to 200 micrometers; and
a graphite powder comprising a grain size up to 100 micrometers.

2. The shaped charge liner of claim 1 , wherein at least one of the titanium metal powder and the aluminum metal powder is present in an amount up to 10% w/w of the composition.

3. The shaped charge liner of claim 1 , wherein the bronze metal powder is present in an amount up to 35% w/w of the composition.

4. The shaped charge liner of claim 1 , wherein the bronze metal powder comprises three or more different grain size ranges.

5. The shaped charge liner of claim 1 , wherein at least 5% to 15% w/w of the composition is the bronze metal powder comprising a grain size range between 180 micrometers to 250 micrometers, at least 2% to 10% w/w of the composition is the bronze metal powder comprising a grain size range between 160 micrometers to 179 micrometers, and at least 2% to 10% w/w of the composition is the bronze metal powder comprising a grain size range between 125 micrometers to 159 micrometers.

6. The shaped charge liner of claim 1 , wherein the tungsten metal powder is present in an amount up to 70% w/w of the composition.

7. The shaped charge liner of claim 1 , wherein the composition further comprises a lead metal powder, the lead metal powder comprising one or more of a first grain size range from between 150 micrometers to 300 micrometers and a second grain size of up to 120 micrometers.

8. The shaped charge liner of claim 7 , wherein the lead metal powder is present in an amount between 10% w/w and 30% w/w of the composition.

9. The shaped charge liner of claim 1 , wherein the aluminum metal powder comprises a grain size range between 50 micrometers and 125 micrometers, and is present in an amount up to 5% w/w of the composition.

10. The shaped charge liner of claim 1 , wherein the composition comprises the titanium metal powder in an amount of 5% to 10% w/w of the composition.

11. The shaped charge liner of claim 1 , wherein the composition comprises the aluminum metal powder and the titanium metal powder, the aluminum metal powder being present in an amount of less than or equal to 5% w/w of the composition and comprising a grain size range between 50 micrometers and 75 micrometers, and the titanium metal powder being present in an amount of 5% to 10% w/w of the composition.

12. A shaped charge comprising:
a case having a cavity;
an explosive load disposed within the cavity of the case; and
a liner disposed adjacent the explosive load and configured for retaining the explosive load within the cavity of the case, the liner having a composition comprising metal powders, the composition comprising:
one or more of an aluminum metal powder and a titanium metal powder, wherein each of the aluminum metal powder and the titanium metal powder comprises a grain size range from 50 micrometers to 150 micrometers;
a bronze metal powder having two or more different grain size ranges, the grain size ranges being selected from the ranges comprising 50 micrometers to 150 micrometers, 100 micrometers to 124 micrometers, 125 micrometers to 159 micrometers, 160 micrometers to 179 micrometers, and 180 micrometers to 250 micrometers;
a tungsten metal powder comprising a grain size up to 200 micrometers; and
a graphite powder comprising a grain size up to 100 micrometers.

13. The shaped charge of claim 12 , wherein at least one of the titanium metal powder and the aluminum is present in an amount up to 10% w/w of the composition.

14. The shaped charge of claim 12 , wherein the bronze metal powder is present in an amount up to 35% w/w of the composition.

15. The shaped charge of claim 12 , wherein the bronze metal powder comprises three or more different grain size ranges.

16. The shaped charge of claim 12 , wherein the composition comprises the aluminum metal powder and the titanium metal powder, the aluminum metal powder being present in an amount of up to 5% w/w of the composition and having a grain size range between 50 micrometers and 125 micrometers, and the titanium metal powder being present in an amount of 5% to 10% w/w of the composition.

17. The shaped charge of claim 12 , wherein the composition further comprises a lead metal powder, the lead metal powder comprising one or more of a first grain size and a second grain size.

18. A method of forming a shaped charge liner, the method comprising the steps of:
providing a composition comprising metal powders, the composition comprising,
one or more of an aluminum metal powder and a titanium metal powder, wherein each of the aluminum metal powder and the titanium metal powder comprises a grain size range from 50 micrometers to 150 micrometers,
a bronze metal powder having two or more different grain size ranges, the grain size ranges being selected from the ranges comprising 50 micrometers to 150 micrometers, 100 micrometers to 124 micrometers, 125 micrometers to 159 micrometers, 160 micrometers to 179 micrometers, and 180 micrometers to 250 micrometers,
a tungsten metal powder having a grain size up to 200 micrometers
a graphite powder having a grain size up to 100 micrometers;

mixing the composition to form a homogenous metal powder blend;
forming the homogenous powder blend into a desired liner shape.

19. The method of claim 18 , wherein the homogenous powder blend is subjected to one or more of a vibrational and a rotational force.

20. The method of claim 18 , wherein the mixing or blending process comprises separately mixing the bronze metal powder having the two or more different grain size ranges, prior to mixing the composition.

Assignees

• Dynaenergetics Gmbh & Co Kg

Inventors

• Loehken Joern Olaf

Classifications

• E21B43/117

  Shaped-charge perforators (E21B43/118 takes precedence) · CPC title

• B22F3/16

  in successive or repeated steps · CPC title

• B22F3/06

  by centrifugal forces · CPC title

• B22F5/106

  Tube or ring forms · CPC title

• B22F3/093

  using vibrations {or friction} · CPC title