U.S. patent application number 14/416437 was filed with the patent office on 2016-02-18 for a method for the manufacturing of metallic matrix composites.
This patent application is currently assigned to INSTYTUT OBROBKI PLASTYCZNEJ. The applicant listed for this patent is Andrzej KORBEL. Invention is credited to Andrzej KORBEL.
Application Number | 20160045958 14/416437 |
Document ID | / |
Family ID | 55301466 |
Filed Date | 2016-02-18 |
United States Patent
Application |
20160045958 |
Kind Code |
A1 |
KORBEL; Andrzej |
February 18, 2016 |
A METHOD FOR THE MANUFACTURING OF METALLIC MATRIX COMPOSITES
Abstract
A method for the manufacturing of metallic matrix composites
through plastic working is disclosed. In the method, the plastic
working charge is in the form of wires, tape or tapes or foil,
which is the first component being covered with the second
component or components with granulation less than 100 .mu.m, after
which they are connected by reciprocal surface contact, forming
weaved bundles, and then the connected elements which form the
charge material advantageously undergo initial rolling or drawing
and in all cases the principal process, which is extrusion
performed on a rolling mill with circumferential grooves, where
between rollers a closing matrix is placed, rotating in reverse to
its axis by an angle of .+-.20.degree. advantageously
.+-.12.degree., with a frequency up to 50 Hz, advantageously 15
Hz.
Inventors: |
KORBEL; Andrzej;
(US) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
KORBEL; Andrzej |
|
|
US |
|
|
Assignee: |
INSTYTUT OBROBKI
PLASTYCZNEJ
Poznan
PL
|
Family ID: |
55301466 |
Appl. No.: |
14/416437 |
Filed: |
November 3, 2014 |
PCT Filed: |
November 3, 2014 |
PCT NO: |
PCT/PL2014/000125 |
371 Date: |
January 22, 2015 |
Current U.S.
Class: |
419/67 |
Current CPC
Class: |
B22F 3/24 20130101; C22C
47/068 20130101; B22F 2003/242 20130101; B22F 3/20 20130101; B22F
5/12 20130101; C22C 47/04 20130101 |
International
Class: |
B22F 3/20 20060101
B22F003/20; B22F 5/00 20060101 B22F005/00; B22F 3/24 20060101
B22F003/24 |
Foreign Application Data
Date |
Code |
Application Number |
Aug 18, 2014 |
PL |
P.409195 A1 |
Claims
1. A method for the manufacturing of metallic matrix composites
through plastic working, advantageously in a continuous extrusion
process with oscillatory twisting, characterized in that the
plastic working charge in the form of wires, tape or tapes or foil,
which is the first component being covered with the second
component or components with granulation less than 100 .mu.m, after
which they are connected by reciprocal surface contact, forming
weaved bundles, and then the connected elements which form the
charge material advantageously undergo initial rolling or drawing
and in all cases the principal process, which is pressing performed
on a rolling mill with circumferential grooves, where between
rollers a closing matrix is placed, rotating in reverse to its axis
by an angle of .+-.20.degree. advantageously .+-.12.degree., with a
frequency up to 50 Hz, advantageously 15 Hz.
2. A method in accordance with claim 1 characterized in that the
wires covered by the second component are placed in a bundle and
twisted together with a twist of (0.8-0.2), advantageously 0.5
rotation per 100 mm of length.
3. A method in accordance with claim 1, characterized in that the
metal tape or foil covered by the second component is twisted in
spiral coils, and multiple coils are placed in a bundle and twisted
together.
4. A method in accordance with claim 1, characterized in that the
charge undergoing the main process of pressing is introduced into
the grooves between the rolling mill's rolls with the shorter axis
of its perpendicular cross-section parallel to the roll axis.
5. A method in accordance with claim 1, characterized in that the
first component is a metal tape or tapes.
6. A method in accordance with claim 1, characterized in that the
first component is a metal foil or foils.
7. A method in accordance with claim 1, characterized in that the
first component is joined wires and foil.
8. A method in accordance with claim 1, characterized in that the
first component is joined wires and metal tapes.
9. A method in accordance with claim 1, characterized in that the
first component is joined foil and metal tapes.
10. A method in accordance with claim 1, characterized in that the
metal foil covered by the second component is twisted in spiral
coils, and multiple coils are placed in a bundle and twisted
together.
Description
CROSS-REFERENCE TO RELATED U.S. APPLICATIONS
[0001] Not applicable.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
[0002] Not applicable.
NAMES OF PARTIES TO A JOINT RESEARCH AGREEMENT
[0003] Not applicable.
REFERENCE TO AN APPENDIX SUBMITTED ON COMPACT DISC
[0004] Not applicable.
BACKGROUND OF THE INVENTION
[0005] 1. Field of the Invention
[0006] The subject of the invention is a method for the
manufacturing of metallic matrix composites through plastic
working
[0007] 2. Description of Related Art Including Information
Disclosed Under 37 CFR 1.97 and 37 CFR 1.98.
[0008] Metallurgical methods of manufacturing of metallic matrix
composites consisting of adding to a liquid metal or alloy of small
metallic elements with a higher melting temperature or of ceramic
powder, mixing the bath and cooling it in order to obtain full
crystallisation.
[0009] A method is also known where liquid metal or alloy is poured
over one of the components in the form of a set of thin wires.
After setting, a compact composite is obtained.
[0010] The aforementioned methods may be used both for individual
manufacturing and in continuous processes.
[0011] Another method of composite manufacture is based on powder
metallurgy and consists of mixing powdered components with specific
chemical composition, size and shapes, mechanically compacting and
then sintering them.
[0012] There is a need for the manufacturing of composites from
components which do not mix to the required degree in known
processes, in particular metallurgic processes.
BRIEF SUMMARY OF THE INVENTION
[0013] The essence of the invention, which is a method for the
manufacturing of metallic matrix composites through plastic
working, advantageously in a continuous pressing extrusion process
with oscillatory twisting, consists of the plastic working charge
in the form of wires, tape or tapes or foil, which is the first
component being covered with the second component or components
with granulation less than 100 .mu.m, after which they are
connected by reciprocal surface contact, forming weaved bundles,
and then the connected elements which form the charge material
undergo initial rolling or drawing and the principal process, which
is pressing performed on a rolling mill with circumferential
grooves, where between rollers a closing matrix is placed, rotating
in reverse to its axis by an angle of .+-.20.degree. advantageously
.+-.12.degree., with a frequency up to 50 Hz, advantageously 15
Hz.
[0014] It is advantageous when the wires covered by the second
component are placed in a bundle and twisted together with a twist
of (0.8-0.2), advantageously 0.5 rotation per 100 mm of length.
[0015] It is also advantageous when the metal tape or foil covered
by the second component is twisted in spiral coils, and multiple
coils are placed in a bundle and twisted together.
[0016] Moreover it is advantageous when the charge undergoing the
main process of pressing is introduced into the grooves between the
rolling mill's rolls with the shorter axis of its perpendicular
cross-section parallel to the roll axis.
[0017] It is also advantageous when the first component is a metal
tape or tapes.
[0018] It is moreover advantageous when the first component is a
metal foil or foils.
[0019] Moreover it is advantageous when the first component is
connected wires and foil, connected wires and metal tape, connected
foil and metal tapes, and the second component is ground aluminium,
advantageously in the form of dust.
[0020] It is additionally advantageous when the metal foil covered
by the second component is twisted in spiral coils, and multiple
coils are placed in a bundle and twisted together.
[0021] The use of the solution presented in the invention enables
the following technical and utility effects: [0022] avoiding the
metallurgical stage for the manufacturing of composites, [0023] the
possibility of manufacturing composites from components which do
not join together in a metallurgical process, [0024] the
possibility of manufacturing composites using commonly available
components, regardless of their chemical composition and form,
[0025] obtaining composites by mechanical mixing and merging,
[0026] a power saving process with no negative environmental
impact.
DETAILED DESCRIPTION OF THE INVENTION
[0027] The method according to the invention requires the use of
charge composed of one component in the form of wire, tape or foil,
whereas the second or subsequent components may have the same form,
or alternatively any ground form, whereas it is advantageous when
at least one of the dimensions of one of the components does not
exceed 100 .mu.m. Charge preparation includes the placement of
wire, tape or foil, and alternatively placing on their surface at
least one component in ground form, or placing it in spaces between
these elements, which then should be twisted or braided
together.
[0028] Method according to the invention consists of plastic
working of a charge prepared in such a manner, advantageously in
the process of continuous pressing with oscillatory twisting,
whereas the deformed charge may be additionally covered,
advantageously with a tape or foil.
[0029] The composite is obtained during the deformation of the
charge, leading to its mechanical mixing and merging.
[0030] The advantage of the method presented in the invention is
bypassing the metallurgical stage and the use of commonly available
components in a solid state, both concerning their chemical
composition and their form.
Example
[0031] Copper wires with a diameter of 1.0 mm were covered on the
surface with aluminium powder with a grain size of 100 .mu.m
through gas injection. They were placed in a bundle, which was
twisted together by 0.5 of rotation for each 100 mm of their
length. A line with a diameter of 12 mm was obtained, which
underwent initial rolling on flat rolls, down to a thickness of 9.5
mm. The material thus prepared formed the charge for continuous
pressing with twisting. The process was conducted using a duo
rolling mill with a roll diameter of 260 mm rotating with a speed
of 0.2 s.sup.-1 with circumferentially cut groove on each of them,
which provide the closed rollers with a circular clearance with a
diameter of 10 mm. In this location a die was placed with a 4 mm
diameter opening, filling the opening between the rollers, and was
subjected to reversible rotations along its axis at an angle of
.+-.12.degree. with a frequency of 15 Hz. The final stage of the
composite manufacturing process on a copper matrix consisted of
entering the charge into the rolling mill in a manner that the
shorter axis of its cross-section was placed in parallel to the
axis of the rollers. The friction between the charge and the
rotating rollers directed it towards a reversibly rotating die,
which by transferring its movement inside the charge located in its
vicinity has caused the occurrence of a cyclic deformation path
effect, and as a consequence the permanent connection of charge
elements and reducing its flow stress, resulting in extruding the
charge through the die opening. Thus a compact composite was
manufactured in the shape of a 4 mm diameter wire.
* * * * *