CN113823435A - Composite electrode wire, preparation method and application of composite electrode wire - Google Patents
Composite electrode wire, preparation method and application of composite electrode wire Download PDFInfo
- Publication number
- CN113823435A CN113823435A CN202111048250.9A CN202111048250A CN113823435A CN 113823435 A CN113823435 A CN 113823435A CN 202111048250 A CN202111048250 A CN 202111048250A CN 113823435 A CN113823435 A CN 113823435A
- Authority
- CN
- China
- Prior art keywords
- core material
- outer material
- composite
- namely
- wire
- 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.)
- Granted
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 101
- 238000002360 preparation method Methods 0.000 title abstract description 8
- 239000011162 core material Substances 0.000 claims description 144
- 239000000463 material Substances 0.000 claims description 135
- 229910001369 Brass Inorganic materials 0.000 claims description 55
- 239000010951 brass Substances 0.000 claims description 55
- 238000000137 annealing Methods 0.000 claims description 38
- 238000005096 rolling process Methods 0.000 claims description 34
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 33
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 31
- 238000000034 method Methods 0.000 claims description 31
- 239000011701 zinc Substances 0.000 claims description 31
- 229910052725 zinc Inorganic materials 0.000 claims description 31
- 238000001125 extrusion Methods 0.000 claims description 25
- 239000007787 solid Substances 0.000 claims description 24
- 239000000956 alloy Substances 0.000 claims description 19
- 229910045601 alloy Inorganic materials 0.000 claims description 18
- 238000005520 cutting process Methods 0.000 claims description 17
- 238000003825 pressing Methods 0.000 claims description 16
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims description 15
- 239000011248 coating agent Substances 0.000 claims description 15
- 238000000576 coating method Methods 0.000 claims description 15
- 238000007670 refining Methods 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 11
- 230000009467 reduction Effects 0.000 claims description 11
- 238000005491 wire drawing Methods 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 4
- GNFTZDOKVXKIBK-UHFFFAOYSA-N 3-(2-methoxyethoxy)benzohydrazide Chemical compound COCCOC1=CC=CC(C(=O)NN)=C1 GNFTZDOKVXKIBK-UHFFFAOYSA-N 0.000 claims description 3
- 238000005246 galvanizing Methods 0.000 claims description 3
- 238000005098 hot rolling Methods 0.000 claims description 3
- 238000007731 hot pressing Methods 0.000 claims 2
- 238000007781 pre-processing Methods 0.000 claims 1
- 239000010410 layer Substances 0.000 description 17
- 230000000052 comparative effect Effects 0.000 description 9
- 238000005253 cladding Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 230000006872 improvement Effects 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 238000002309 gasification Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 230000003746 surface roughness Effects 0.000 description 3
- 241001391944 Commicarpus scandens Species 0.000 description 2
- 229910001297 Zn alloy Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
- H01B1/026—Alloys based on copper
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
- H01B5/02—Single bars, rods, wires, or strips
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Metal Extraction Processes (AREA)
Abstract
The invention relates to the technical field of electrode wire processing, in particular to a composite electrode wire, a preparation method and application of the composite electrode wire.
Description
Technical Field
The invention relates to the technical field of electrode wire processing, in particular to a composite electrode wire, a preparation method and application of the composite electrode wire.
Background
The composite conductor combines the characteristics of a plurality of different materials, and good adaptability is an obvious advantage of the composite conductor, so that the composite conductor not only has ideal electromechanical properties, but also has a wide application range. At present, in the domestic precision machining field, slow-speed wire feeding equipment is widely adopted for precision cutting of materials. The electrode wire for cutting adopted by the slow-moving wire is mainly made of brass, and the zinc element in the brass is gasified at high temperature to flush the fine scraps so as to improve the precision of the cutting surface. However, brass has high hardness, is difficult to process into a brass with a diameter of less than 0.2mm, has limited conductivity which is basically about 20 percent, and limits the utilization efficiency of electric pulse energy.
The patent application number of CN202010509917.X discloses an electrode wire for micro electric discharge machining, which comprises a core material and a surface layer coated outside the core material, wherein the core material is made of brass, the surface layer comprises an inner layer coated on the outer surface of the core material and an outer layer coated on the outer surface of the inner layer, and the outer layer is an amorphous layer. Through the short-range ordered and long-range disordered amorphous layer, the electrode wire can improve the processing precision, eliminate stress and reduce deformation, so that the processed surface is free of burn, smooth and free of microcracks, and the purpose of improving the on-line processing precision and the surface quality of the micro tool electrode is achieved.
Although the above patent discloses a wire electrode prepared by coating a brass core material, a copper-zinc alloy inner layer and an amorphous outer layer, the wire electrode is coated by plating the copper-zinc alloy inner layer on the surface of the brass core material, which is very likely to cause surface unevenness during wire drawing, and has low strength, thereby having a great adverse effect on the quality of subsequent electric discharge cutting.
Disclosure of Invention
Aiming at the problems, the invention provides a composite wire electrode, a preparation method and application of the composite wire electrode, wherein a brass tubular outer material is directly sleeved outside a conductive alloy core material, then pressure cold cladding is carried out, so that the conductive alloy core material and the brass outer material are directly and concentrically coated into a whole, then drawing, annealing and wire drawing are carried out, so that the core material and the outer material form a final composite wire electrode, a zinc material coating can be sprayed on the surface of the composite wire electrode, and the technical problems of non-gloss surface and low overall strength of the conventional composite wire electrode are solved.
In order to achieve the purpose, the invention provides the following technical scheme:
a composite wire electrode comprising:
the core material and the outer material concentrically coated outside the core material;
the core material is conductive alloy;
the outer material is brass.
As an improvement, the core material is conductive copper alloy which is subjected to grain refining treatment, the treatment method is one of continuous extrusion or hot rolling, and the conductivity of the core material is more than 50% IACS.
As an improvement, the outer material is zinc-containing brass, the content of zinc in the outer material is 30% -50%, and the balance is copper and inevitable impurities.
As an improvement, the surface galvanizing treatment of the outer material after the core material is coated is completed.
A method for preparing a composite wire electrode according to any one of the above claims, comprising the steps of:
step a, pretreatment, namely performing grain refining treatment on the core material to obtain a solid and round rod-shaped core material.
Step b, sleeving, namely cleaning a solid core material and a tubular outer material and sleeving the solid core material and the tubular outer material, wherein the cross-sectional area ratio of the outer material to the core material is 1:4-7: 3;
step c, cold pressing, namely performing annular extrusion on the core material and the outer material sleeved in the step b to enable the core material and the outer material to axially extend, wherein the annular extrusion pressure is 500-1000MPa, and the diameter reduction deformation of the core material and the outer material after axial extension is 20-40%;
d, hot ring-rolling, namely performing hot ring-rolling on the core material and the outer material obtained in the step c at the temperature of 500-700 ℃ and the deformation rate of more than 40%, and rapidly cooling to ensure that the core material and the outer material both obtain fine grains;
e, drawing, namely drawing the core material and the outer material which are extended in the step d to reduce the diameter;
step f, annealing, namely annealing the core material and the outer material subjected to the drawing for multiple times in the step e, wherein the annealing temperature is 200-700 ℃;
and g, drawing, namely drawing the core material and the outer material annealed in the step f to form the composite electrode wire with the diameter of 0.03-0.3mm, wherein the tensile strength of the composite electrode wire is more than 800MPa, and the electric conductivity of the composite electrode wire is more than 30% IACS.
In the step b, the core material is sleeved for a plurality of times, and a plurality of layers of outer materials are sleeved on the outer surface.
In the step f, a zinc material coating is coated on the surface of the outer material after annealing treatment, and the thickness of the coating is 0.5-50 um.
In the step g, a zinc material coating is coated on the surface of the outer material after wire drawing treatment, and the thickness of the coating is 0.5-50 um.
The composite electrode wire is applied to the cutting of a slow-speed wire.
The invention has the beneficial effects that:
(1) according to the invention, the brass tubular outer material is directly sleeved outside the core material of the conductive alloy, then pressure cold-wrapping is carried out, so that the conductive alloy core material and the brass outer material are directly and concentrically coated into a whole, then drawing, annealing and wire drawing are carried out, so that the core material and the outer material form a final composite electrode wire, and a zinc material coating can be sprayed on the surface of the composite electrode wire, thereby solving the technical problems of the existing composite electrode wire that the surface is not glossy and the overall strength is low;
(2) according to the invention, brass with the zinc content of 30-50% is used as the outer material, and the strength of the outer material is originally superior to that of the core material conductive alloy in the process of forming the composite electrode wire, so that the composite electrode wire with thinner diameter and better stability can be pulled out while the integral toughness of the formed composite electrode wire is ensured;
(3) according to the invention, in the cutting use process of the composite electrode wire, the zinc metal material contained in the outer material can be melted by high temperature of discharge in the discharge cutting process, and the molten slag adhered to the composite electrode wire is cracked due to the gasification of zinc particles, so that the smooth use of the composite electrode wire is ensured;
(4) according to the invention, the conductive alloy with the conductivity of more than 50% IACS is used as the core material, and the high conductivity of the core material of the conductive alloy is utilized to ensure the excellent conductivity of the whole composite electrode wire in the discharge cutting process, so that the condition that the composite electrode wire is broken due to the low conductivity of the core material is avoided.
In conclusion, the invention has the advantages of excellent conductivity, better toughness, thinner diameter and the like, and is particularly suitable for the technical field of electrode wire processing.
Drawings
FIG. 1 is a schematic cross-sectional view of a wire electrode according to the present invention;
FIG. 2 is a schematic view of the process of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The first embodiment is as follows:
as shown in fig. 1, a composite wire electrode includes:
the core material 1 and the outer material 2 concentrically coated outside the core material 1;
the core material 1 is conductive alloy;
the outer material 2 is brass.
The core material 1 is conductive copper alloy subjected to grain refining treatment, the treatment method is one of continuous extrusion or hot rolling, and the conductivity of the core material 1 is more than 50% IACS.
Further, the outer material 2 is zinc-containing brass, the content of zinc in the outer material 2 is 30% -50%, and the balance is copper and inevitable impurities.
And finishing the surface galvanizing treatment of the outer material 2 after the core material 1 is coated.
Compared with the conventional composite electrode wire, the composite electrode wire in the invention is different from the conventional composite electrode wire in that the composite electrode wire takes the conductive alloy as the core material, preferably the conductive copper alloy, takes the zinc-containing brass as the outer material, preferably the brass with the zinc content of 30-50 percent, and the balance of copper and inevitable impurities.
Further, most of the existing composite electrode wires are made of brass as a core material, conductive alloy as an outer material and zinc material coating coated on the surface of the outer material, and the composite electrode wires with the structure are difficult to obtain the composite electrode wires with the diameter of less than 0.2mm by direct drawing in the preparation process due to the characteristics of high brass hardness and low conductive alloy hardness, and the conductive alloy on the outer layer is easy to break by direct drawing.
The existing methods for preparing the composite wire electrode below 0.2mm are mostly two, one is to plate a layer of conductive alloy material on the surface of a core material in an electroplating way, and then form the composite wire electrode through wire drawing, however, the composite electrode wire prepared by the method has rough surface and uneven distribution of the conductive metal layer, so that the composite electrode wire is uneven in discharge and easy to break in the discharge cutting process, the other processing mode is to wind a layer of conductive metal layer outside the core material, then coat the conductive metal layer outside the core material in a welding seam mode, then form the composite wire electrode through wire drawing, but the composite electrode wire prepared by the method has the conditions of uneven surface and easy breakage, therefore, when a composite wire electrode having a thickness of 0.2mm or less is manufactured, there is a problem in that the composite wire electrode has high toughness and stability.
And this application, exchange core material and outer material, directly use brass as outer material, and conductive alloy is the core material, in the preparation process, the toughness of brass, guaranteed to carry out the physics at composite electrode silk and draw the in-process, fracture can not appear, and the outer material of zinciferous brass when putting some cutting at composite electrode silk, can make zinc particle gasification, wash the tiny chip and improve the cutting plane precision, and, conductive copper alloy's high conductivity, make the core material in the cutting process that discharges, can provide very stable conductivity, make composite electrode silk in the cutting process that discharges, can not stretch out because of the rate of discharge is low, and conductive alloy is located the inlayer, can not because of the cutting process that discharges, the temperature rises, lead to alloy composition constantly gasification, make conductive alloy continuously descend.
The core member 1 may be fitted multiple times, and the outer surface of the core member may be fitted with a plurality of layers of the outer material 2.
Then, the core material 1 and the outer material 2 are integrated by cold pressing and are annealed, and the surface of the outer material 2 after the annealing treatment is coated with a zinc material coating.
Or a zinc material coating is coated on the surface of the outer material 2 after the composite electrode wire is formed through wire drawing treatment.
After solid core material 1 and tubular outer material 2 are cleaned, pipe penetration and sleeving are performed, and the core material 1 and the outer material 2 after pipe penetration and sleeving are combined in a normal-temperature cold pressing and cladding mode, so that the core material 1 and the outer material 2 are combined, the requirement is emphasized that the principle of cold pressing and cladding is to apply annular pressure on the outer side of the outer material 2, so that the outer material 2 is stretched and extended along the axial direction, because the outer material 2 is brass, the material hardness of the brass of the outer material 2 is far higher than that of the conductive copper alloy of the core material 1, and therefore, the core material 1 is forced by the outer material 2 to be uniformly stretched and extended along the axial direction in a mode of annular pressure application and axial stretching, and in addition, although the cold pressing and cladding are performed only in a normal-temperature state, in the cold pressing and cladding process, the generated heat can also enable the core material 1 and the outer material 2 to be tightly combined into a whole.
More specifically, in the cold-press cladding process, when pressure is applied to the outer material 2 in the circumferential direction, the pressure applied to the outer material 2 in the circumferential direction is all equal and all points to the center of the outer material 2, for example, a rolling mode may be adopted for rolling the outer surface of the outer material 2, and in the rolling process, the cold-press cladding process is performed on the outer material 2 and the core material 1 in a mode of gradually pushing towards the center of the outer material 2, so that the outer material 2 and the core material 1 are uniformly axially drawn and extended.
Example two:
as shown in fig. 2, a method for preparing a composite wire electrode comprises the following steps:
step a, pretreatment, namely performing grain refining treatment on the core material 1 to obtain a solid and round rod-shaped core material
Step b, sleeving, namely selecting solid conductive copper alloy with the conductivity of 60% IACS as a core material and respectively cleaning tubular brass outer material with the zinc content of 30% and sleeving the core material and the tubular brass outer material, wherein the cross-sectional area ratio of the outer material 2 to the core material 1 is 7: 3;
c, cold pressing, namely performing annular extrusion on the conductive copper alloy and the brass sleeved in the step a to ensure that the conductive copper alloy and the brass synchronously extend along the axial direction, wherein the annular extrusion pressure is 1000MPa, and the diameter reduction deformation of the core material 1 and the outer material 2 after the axial extension is 40 percent
D, hot ring rolling, namely performing hot ring rolling on the core material 1 and the outer material 2 obtained in the step c, wherein the hot ring rolling temperature is 500 ℃, the deformation rate is 41%, and cooling is performed to ensure that the core material 1 and the outer material 2 both obtain fine grain treatment
E, drawing, namely drawing the wire rod subjected to the extension forming in the step b to reduce the diameter;
step f, annealing, namely annealing the wire rod obtained in the step c at the annealing temperature of 200 ℃;
and g, drawing, namely drawing the wire annealed in the step d to form a composite electrode wire with the diameter of 0.03mm, wherein the tensile strength of the composite electrode wire is 850MPa, and the electric conductivity of the composite electrode wire is 35% IACS.
Example three:
as shown in fig. 2, a method for preparing a composite wire electrode comprises the following steps:
step a, pretreatment, namely performing grain refining treatment on the core material 1 to obtain a solid and round rod-shaped core material
B, sleeving, namely selecting solid conductive copper alloy with the conductivity of 60% IACS as a core material and tubular brass outer material with the zinc content of 40% to be respectively cleaned and sleeved, wherein the cross-sectional area ratio of the outer material 2 to the core material 1 is 1: 1;
step c, cold pressing, namely performing annular extrusion on the conductive copper alloy and the brass sleeved in the step a to ensure that the conductive copper alloy and the brass synchronously extend along the axial direction, wherein the annular extrusion pressure is 750MPa, and the diameter reduction deformation of the core material 1 and the outer material 2 after the axial extension is 30 percent
D, hot ring rolling, namely performing hot ring rolling on the core material 1 and the outer material 2 obtained in the step c, wherein the hot ring rolling temperature is 600 ℃, the deformation rate is 45%, and cooling is performed to ensure that the core material 1 and the outer material 2 both obtain fine grains
E, drawing, namely drawing the wire rod subjected to the extension forming in the step b to reduce the diameter;
step f, annealing, namely annealing the wire rod obtained in the step c at the annealing temperature of 500 ℃;
and g, drawing, namely drawing the wire rod annealed in the step d to form the composite electrode wire with the diameter of 0.15mm, wherein the tensile strength of the composite electrode wire is 950MPa, and the electric conductivity of the composite electrode wire is 45% IACS.
Example four:
as shown in fig. 2, a method for preparing a composite wire electrode comprises the following steps:
step a, pretreatment, namely performing grain refining treatment on the core material 1 to obtain a solid and round rod-shaped core material
B, sleeving, namely selecting solid conductive copper alloy with the conductivity of 60% IACS as a core material and tubular brass outer material with the zinc content of 50% to be respectively cleaned and sleeved, wherein the cross-sectional area ratio of the outer material 2 to the core material 1 is 1: 4;
step c, cold pressing, namely performing annular extrusion on the conductive copper alloy and the brass sleeved in the step a to ensure that the conductive copper alloy and the brass synchronously extend along the axial direction, wherein the annular extrusion pressure is 500MPa, and the diameter reduction deformation of the core material 1 and the outer material 2 after the axial extension is 20 percent
D, hot ring rolling, namely performing hot ring rolling on the core material 1 and the outer material 2 obtained in the step c, wherein the temperature of the hot ring rolling is 700 ℃, the deformation rate is 45%, and cooling is performed to ensure that the core material 1 and the outer material 2 both obtain fine grains
E, drawing, namely drawing the wire rod subjected to the extension forming in the step b to reduce the diameter;
step f, annealing, namely annealing the wire rod obtained in the step c at the annealing temperature of 700 ℃;
and g, drawing, namely drawing the wire rod annealed in the step d to form a composite electrode wire with the diameter of 0.30mm, wherein the tensile strength of the composite electrode wire is 1050MPa, and the electric conductivity of the composite electrode wire is 55% IACS.
Example five:
as shown in fig. 2, a method for preparing a composite wire electrode comprises the following steps:
step a, pretreatment, namely performing grain refining treatment on the core material 1 to obtain a solid and round rod-shaped core material
Step b, sleeving, namely selecting solid conductive copper alloy with 55% of IACS conductivity as a core material and tubular brass outer material with 30% of zinc content, respectively cleaning and sleeving, wherein the cross-sectional area ratio of the outer material 2 to the core material 1 is 7: 3;
c, cold pressing, namely performing annular extrusion on the conductive copper alloy and the brass sleeved in the step a to ensure that the conductive copper alloy and the brass synchronously extend along the axial direction, wherein the annular extrusion pressure is 1000MPa, and the diameter reduction deformation of the core material 1 and the outer material 2 after the axial extension is 40 percent
D, hot ring rolling, namely performing hot ring rolling on the core material 1 and the outer material 2 obtained in the step c, wherein the hot ring rolling temperature is 500 ℃, the deformation rate is 45%, and cooling is performed to ensure that the core material 1 and the outer material 2 both obtain fine grains
E, drawing, namely drawing the wire rod subjected to the extension forming in the step b to reduce the diameter;
step f, annealing, namely annealing the wire rod obtained in the step c at the annealing temperature of 200 ℃;
and g, drawing, namely drawing the wire rod annealed in the step d to form the composite electrode wire with the diameter of 0.031mm, wherein the tensile strength of the composite electrode wire is 823MPa, and the electric conductivity of the composite electrode wire is 33% IACS.
Example six:
as shown in fig. 2, a method for preparing a composite wire electrode comprises the following steps:
step a, pretreatment, namely performing grain refining treatment on the core material 1 to obtain a solid and round rod-shaped core material
B, sleeving, namely selecting solid conductive copper alloy with 55% of IACS conductivity as a core material and tubular brass outer material with 40% of zinc content, respectively cleaning and sleeving, wherein the cross-sectional area ratio of the outer material 2 to the core material 1 is 1: 1;
step c, cold pressing, namely performing annular extrusion on the conductive copper alloy and the brass sleeved in the step a to ensure that the conductive copper alloy and the brass synchronously extend along the axial direction, wherein the annular extrusion pressure is 1000MPa, and the diameter reduction deformation of the core material 1 and the outer material 2 after the axial extension is 35 percent
D, hot ring rolling, namely performing hot ring rolling on the core material 1 and the outer material 2 obtained in the step c, wherein the hot ring rolling temperature is 600 ℃, the deformation rate is 45%, and cooling is performed to ensure that the core material 1 and the outer material 2 both obtain fine grains
E, drawing, namely drawing the wire rod subjected to the extension forming in the step b to reduce the diameter;
step f, annealing, namely annealing the wire rod obtained in the step c at the annealing temperature of 500 ℃;
and g, drawing, namely drawing the wire rod annealed in the step d to form a composite wire electrode with the diameter of 0.152mm, wherein the tensile strength of the composite wire electrode is 856MPa, and the conductivity of the composite wire electrode is 42% IACS.
Example seven:
as shown in fig. 2, a method for preparing a composite wire electrode comprises the following steps:
step a, pretreatment, namely performing grain refining treatment on the core material 1 to obtain a solid and round rod-shaped core material
B, sleeving, namely selecting solid conductive copper alloy with the conductivity of 60% IACS as a core material and tubular brass outer material with the zinc content of 50% to be respectively cleaned and sleeved, wherein the cross-sectional area ratio of the outer material 2 to the core material 1 is 1: 4;
step c, cold pressing, namely performing annular extrusion on the conductive copper alloy and the brass sleeved in the step a to ensure that the conductive copper alloy and the brass synchronously extend along the axial direction, wherein the annular extrusion pressure is 500MPa, and the diameter reduction deformation of the core material 1 and the outer material 2 after the axial extension is 20 percent
D, hot ring rolling, namely performing hot ring rolling on the core material 1 and the outer material 2 obtained in the step c, wherein the temperature of the hot ring rolling is 700 ℃, the deformation rate is 45%, and cooling is performed to ensure that the core material 1 and the outer material 2 both obtain fine grains
E, drawing, namely drawing the wire rod subjected to the extension forming in the step b to reduce the diameter;
step f, annealing, namely annealing the wire rod obtained in the step c at the annealing temperature of 700 ℃;
and g, drawing, namely drawing the wire rod annealed in the step d to form the composite electrode wire with the diameter of 0.32mm, wherein the tensile strength of the composite electrode wire is 900MPa, and the electric conductivity of the composite electrode wire is 52% IACS.
Example eight:
as shown in fig. 2, a method for preparing a composite wire electrode comprises the following steps:
step a, pretreatment, namely performing grain refining treatment on the core material 1 to obtain a solid and round rod-shaped core material
Step b, sheathing, namely selecting solid conductive copper alloy with the conductivity of 51 percent IACS as a core material and respectively cleaning tubular brass outer material with the zinc content of 30 percent, and then sheathing, wherein the cross-sectional area ratio of the outer material 2 to the core material 1 is 7: 3;
c, cold pressing, namely performing annular extrusion on the conductive copper alloy and the brass sleeved in the step a to ensure that the conductive copper alloy and the brass synchronously extend along the axial direction, wherein the annular extrusion pressure is 1000MPa, and the diameter reduction deformation of the core material 1 and the outer material 2 after the axial extension is 40 percent
D, hot ring rolling, namely performing hot ring rolling on the core material 1 and the outer material 2 obtained in the step c, wherein the hot ring rolling temperature is 600 ℃, the deformation rate is 45%, and cooling is performed to ensure that the core material 1 and the outer material 2 both obtain fine grains
E, drawing, namely drawing the wire rod subjected to the extension forming in the step b to reduce the diameter;
step f, annealing, namely annealing the wire rod obtained in the step c at the annealing temperature of 200 ℃;
and g, drawing, namely drawing the wire rod annealed in the step d to form the composite electrode wire with the diameter of 0.031mm, wherein the tensile strength of the composite electrode wire is 800MPa, and the electric conductivity of the composite electrode wire is 31% IACS.
Example nine:
as shown in fig. 2, a method for preparing a composite wire electrode comprises the following steps:
step a, pretreatment, namely performing grain refining treatment on the core material 1 to obtain a solid and round rod-shaped core material
B, sheathing, namely selecting solid conductive copper alloy with the conductivity of 51 percent IACS as a core material and respectively cleaning tubular brass outer material with the zinc content of 30 percent, and then sheathing, wherein the cross-sectional area ratio of the outer material 2 to the core material 1 is 1: 1;
step c, cold pressing, namely performing annular extrusion on the conductive copper alloy and the brass sleeved in the step a to ensure that the conductive copper alloy and the brass synchronously extend along the axial direction, wherein the annular extrusion pressure is 700MPa, and the diameter reduction deformation of the core material 1 and the outer material 2 after the axial extension is 40 percent
D, hot ring rolling, namely performing hot ring rolling on the core material 1 and the outer material 2 obtained in the step c, wherein the temperature of the hot ring rolling is 550 ℃, the deformation rate is 45%, and cooling is performed to ensure that the core material 1 and the outer material 2 both obtain fine grains
E, drawing, namely drawing the wire rod subjected to the extension forming in the step b to reduce the diameter;
step f, annealing, namely annealing the wire rod obtained in the step c at the annealing temperature of 500 ℃;
and g, drawing, namely drawing the wire rod annealed in the step d to form the composite electrode wire with the diameter of 0.15mm, wherein the tensile strength of the composite electrode wire is 850MPa, and the electric conductivity of the composite electrode wire is 40% IACS.
Example ten:
as shown in fig. 2, a method for preparing a composite wire electrode comprises the following steps:
step a, pretreatment, namely performing grain refining treatment on the core material 1 to obtain a solid and round rod-shaped core material
Step b, sleeving, namely selecting solid conductive copper alloy with the conductivity of 51% IACS as a core material and tubular brass outer material with the zinc content of 30% to be respectively cleaned and sleeved, wherein the cross-sectional area ratio of the outer material 2 to the core material 1 is 1: 4;
step c, cold pressing, namely performing annular extrusion on the conductive copper alloy and the brass sleeved in the step a to ensure that the conductive copper alloy and the brass synchronously extend along the axial direction, wherein the annular extrusion pressure is 500MPa, and the diameter reduction deformation of the core material 1 and the outer material 2 after the axial extension is 40 percent
D, hot ring rolling, namely performing hot ring rolling on the core material 1 and the outer material 2 obtained in the step c, wherein the hot ring rolling temperature is 600 ℃, the deformation rate is 45%, and cooling is performed to ensure that the core material 1 and the outer material 2 both obtain fine grains
E, drawing, namely drawing the wire rod subjected to the extension forming in the step b to reduce the diameter;
step f, annealing, namely annealing the wire rod obtained in the step c at the annealing temperature of 200 ℃;
and g, drawing, namely drawing the wire rod annealed in the step d to form a composite electrode wire with the diameter of 0.31mm, wherein the tensile strength of the composite electrode wire is 905MPa, and the electric conductivity of the composite electrode wire is 50% IACS.
Comparative example one:
electrode wire prepared in the patent of invention with patent application number cn202010509917.x mentioned in the background.
Comparative example two:
the electrode wire prepared in the invention patent with the patent application number of CN 201910172529.
Comparative example three:
the electrode wire prepared in the invention patent with the patent application number of CN 201510458831.
Experimental example:
the diameters, concentricity, electric conductivity, tensile strength, cutting speed, cut surface roughness, damage of a cutter and breakage rate during wire drawing of the electrode wires prepared in the preparation methods of examples 2 to 10 and comparative examples 1 to 3 were statistically analyzed, and the results are shown in table 1:
| diameter mm | Conductivity% IACS | Tensile strength MPa | Cutting surface roughness Ra/mum | |
| Example 2 | 0.03 | 35 | 850 | 0.015 |
| Example 3 | 0.15 | 45 | 950 | 0.020 |
| Example 4 | 0.30 | 55 | 1050 | 0.030 |
| Example 5 | 0.031 | 33 | 823 | 0.015 |
| Example 6 | 0.152 | 42 | 856 | 0.020 |
| Example 7 | 0.32 | 52 | 970 | 0.030 |
| Example 8 | 0.034 | 31 | 800 | 0.015 |
| Example 9 | 0.151 | 40 | 842 | 0.020 |
| Example 10 | 0.31 | 50 | 905 | 0.030 |
| Comparative example 1 | 0.5-1.5 | 22.1-23.6 | 970-1020 | 0.05-0.07 |
| Comparative example 2 | 0.2-12 | 20-50 | 900-3500 | 0.05-0.50 |
| Comparative example 3 | 0.2-0.35 | 22-25 | 930-1000 | 0.03-0.05 |
And (4) conclusion: .
By comparing examples 2 to 10 with comparative examples 1 to 3, it is obvious that the electric conductivity, tensile strength and cut surface roughness of the electrode wire in the invention are far better than those of the electrode wire in the comparative examples under the same diameter, and in addition, the electrode wire with the diameter of less than 0.2mm can be prepared, the electric conductivity of the electrode wire with the diameter of less than 0.2mm is still more than 30% IACS, and the tensile strength is more than 800 MPa.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A composite wire electrode, comprising:
the core material (1) and the outer material (2) concentrically coated outside the core material (1);
the core material (1) is a conductive alloy;
the outer material (2) is brass.
2. A composite wire electrode according to claim 1, wherein:
the core material (1) is conductive copper alloy subjected to grain refining treatment, the treatment method is one of continuous extrusion or hot rolling, and the conductivity of the core material (1) is more than 50% IACS.
3. The composite wire electrode of claim 1, wherein:
the outer material (2) is zinc-containing brass, the content of zinc in the outer material (2) is 30% -50%, and the balance is copper and inevitable impurities.
4. A composite wire electrode according to claim 1, wherein: and finishing the surface galvanizing treatment of the outer material (2) coated on the core material (1).
5. A method for preparing a composite wire electrode according to any one of claims 1 to 4, comprising the steps of:
step a, preprocessing, namely performing grain refining treatment on the core material (1) to obtain a solid and round rod-shaped core material;
step b, sleeving, namely cleaning a solid core material (1) and a tubular outer material (2) and sleeving, wherein the cross-sectional area ratio of the outer material (2) to the core material (1) is 1:4-7: 3;
c, cold pressing, namely performing annular extrusion on the core material (1) and the outer material (2) sleeved in the step b to enable the core material (1) and the outer material (2) to axially extend, wherein the annular extrusion pressure is 500-1000MPa, and the diameter reduction deformation of the core material (1) and the outer material (2) after axial extension is 20-40%;
d, performing hot-pressing ring rolling, namely performing hot-pressing ring rolling on the core material (1) and the outer material (2) obtained in the step c at the temperature of 500 ℃ and 700 ℃, wherein the deformation rate is more than 40%, and cooling to ensure that the core material (1) and the outer material (2) both obtain fine grains;
e, drawing, namely drawing the core material (1) and the outer material (2) which are extended in the step d to reduce the diameter;
step f, annealing, namely annealing the core material (1) and the outer material (2) which are subjected to the drawing for multiple times in the step e, wherein the annealing temperature is 200-700 ℃;
step g, drawing, namely drawing the core material (1) and the outer material (2) annealed in the step f to form the composite wire electrode with the diameter of 0.03-0.3mm, wherein the tensile strength of the composite wire electrode is more than 800MPa, and the electric conductivity of the composite wire electrode is more than 30% IACS.
6. The method for preparing the composite electrode wire according to claim 5, wherein the method comprises the following steps:
in the step b, the core material (1) is sleeved for a plurality of times, and a plurality of layers of outer materials (2) are sleeved on the outer surface.
7. The method for preparing the composite electrode wire according to claim 5, wherein the method comprises the following steps:
in the step f, a zinc material coating is coated on the surface of the outer material (2) after annealing treatment, and the thickness of the coating is 0.5-50 um.
8. The method for preparing the composite electrode wire according to claim 5, wherein the method comprises the following steps:
and in the step g, coating a zinc material coating on the surface of the outer material (2) subjected to wire drawing treatment, wherein the thickness of the coating is 0.5-50 um.
9. Use of a composite wire electrode according to any one of claims 1 to 4 in slow-speed wire cutting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111048250.9A CN113823435B (en) | 2021-09-08 | 2021-09-08 | Composite electrode wire, preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111048250.9A CN113823435B (en) | 2021-09-08 | 2021-09-08 | Composite electrode wire, preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113823435A true CN113823435A (en) | 2021-12-21 |
| CN113823435B CN113823435B (en) | 2024-04-23 |
Family
ID=78922203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111048250.9A Active CN113823435B (en) | 2021-09-08 | 2021-09-08 | Composite electrode wire, preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113823435B (en) |
Citations (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09323222A (en) * | 1996-06-04 | 1997-12-16 | Yazaki Corp | Manufacture of electrode wire for elector-discharge machining |
| JP2000052152A (en) * | 1998-08-11 | 2000-02-22 | Bridgestone Corp | Manufacture of electric discharge machining electrode wire |
| JP2000198027A (en) * | 1998-12-31 | 2000-07-18 | Bridgestone Corp | Electrode wire for electric discharge machining and manufacture of it |
| CN1269274A (en) * | 1999-03-25 | 2000-10-11 | 贝尔肯霍夫有限公司 | metal wire electrode |
| US6448527B1 (en) * | 1996-09-04 | 2002-09-10 | Berkenhoff Gmbh | High-strength erosion electrode |
| JP2005116486A (en) * | 2003-10-10 | 2005-04-28 | Hitachi Cable Ltd | Copper alloy wire material for electronic component |
| TW200635685A (en) * | 2005-02-11 | 2006-10-16 | Thermocompact Sa | Composite wire for electrical discharge machining |
| CN1996503A (en) * | 2007-01-05 | 2007-07-11 | 北京科技大学 | A high-performance silver coated aluminum compound silk material and its preparing technology |
| US20090025959A1 (en) * | 2005-12-01 | 2009-01-29 | Dandridge Tomalin | Edm wire |
| CN102239024A (en) * | 2008-12-03 | 2011-11-09 | 贝尔肯霍夫股份有限公司 | Wire electrode for electric discharge cutting processes |
| CN103325439A (en) * | 2013-05-14 | 2013-09-25 | 安徽旺达铜业发展有限公司 | Tin-plated copper-coated brass wire and production method thereof and tin plating device |
| CN203490967U (en) * | 2013-09-23 | 2014-03-19 | 江苏东强股份有限公司 | Alloy sheath through ground wire special for railway signal system |
| CN104148438A (en) * | 2014-07-03 | 2014-11-19 | 北京科技大学 | Preparation method of metal layered composite material by multi-head sleeve drawing composition |
| CN104464901A (en) * | 2013-09-23 | 2015-03-25 | 江苏东强股份有限公司 | Special alloy-sheathed through earth wire for railway signal system and manufacturing method for special alloy-sheathed through earth wire |
| CN105779828A (en) * | 2014-12-22 | 2016-07-20 | 北京有色金属研究总院 | Copper alloy and aluminum alloy composite wire and preparation processing method thereof |
| CN107785122A (en) * | 2017-09-20 | 2018-03-09 | 中天合金技术有限公司 | A kind of preparation technology of seamless Through ground wire |
| CN108320835A (en) * | 2018-02-01 | 2018-07-24 | 北京科技大学 | A kind of bimetallic railway run-through ground line and its short-flow production method |
| DE102017008325A1 (en) * | 2017-08-29 | 2019-02-28 | Heinrich Stamm Gmbh | Wire electrode for the spark erosive cutting of an object |
| CN110340164A (en) * | 2019-08-22 | 2019-10-18 | 芜湖楚江合金铜材有限公司 | A kind of production technology of brass wire |
| CN111906163A (en) * | 2020-09-10 | 2020-11-10 | 广德克莱德新材料技术有限公司 | Multilayer metal-coated electric spark cutting wire and manufacturing method thereof |
| CN212264200U (en) * | 2020-09-10 | 2021-01-01 | 广德克莱德新材料技术有限公司 | Multilayer metal-coated electric spark cutting wire |
| CN112222552A (en) * | 2020-09-07 | 2021-01-15 | 宁波康强微电子技术有限公司 | Gamma electrode wire and preparation method thereof |
| CN113223755A (en) * | 2021-04-13 | 2021-08-06 | 南京理工大学 | High-strength and high-corrosion-resistance copper-stainless steel composite wire and preparation method thereof |
-
2021
- 2021-09-08 CN CN202111048250.9A patent/CN113823435B/en active Active
Patent Citations (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09323222A (en) * | 1996-06-04 | 1997-12-16 | Yazaki Corp | Manufacture of electrode wire for elector-discharge machining |
| US6448527B1 (en) * | 1996-09-04 | 2002-09-10 | Berkenhoff Gmbh | High-strength erosion electrode |
| JP2000052152A (en) * | 1998-08-11 | 2000-02-22 | Bridgestone Corp | Manufacture of electric discharge machining electrode wire |
| JP2000198027A (en) * | 1998-12-31 | 2000-07-18 | Bridgestone Corp | Electrode wire for electric discharge machining and manufacture of it |
| CN1269274A (en) * | 1999-03-25 | 2000-10-11 | 贝尔肯霍夫有限公司 | metal wire electrode |
| JP2005116486A (en) * | 2003-10-10 | 2005-04-28 | Hitachi Cable Ltd | Copper alloy wire material for electronic component |
| TW200635685A (en) * | 2005-02-11 | 2006-10-16 | Thermocompact Sa | Composite wire for electrical discharge machining |
| US20090025959A1 (en) * | 2005-12-01 | 2009-01-29 | Dandridge Tomalin | Edm wire |
| CN1996503A (en) * | 2007-01-05 | 2007-07-11 | 北京科技大学 | A high-performance silver coated aluminum compound silk material and its preparing technology |
| CN102239024A (en) * | 2008-12-03 | 2011-11-09 | 贝尔肯霍夫股份有限公司 | Wire electrode for electric discharge cutting processes |
| US20110290531A1 (en) * | 2008-12-03 | 2011-12-01 | Berkenhoff Gmbh | Wire electrode for electrical discharge cutting |
| CN103325439A (en) * | 2013-05-14 | 2013-09-25 | 安徽旺达铜业发展有限公司 | Tin-plated copper-coated brass wire and production method thereof and tin plating device |
| CN203490967U (en) * | 2013-09-23 | 2014-03-19 | 江苏东强股份有限公司 | Alloy sheath through ground wire special for railway signal system |
| CN104464901A (en) * | 2013-09-23 | 2015-03-25 | 江苏东强股份有限公司 | Special alloy-sheathed through earth wire for railway signal system and manufacturing method for special alloy-sheathed through earth wire |
| CN104148438A (en) * | 2014-07-03 | 2014-11-19 | 北京科技大学 | Preparation method of metal layered composite material by multi-head sleeve drawing composition |
| CN105779828A (en) * | 2014-12-22 | 2016-07-20 | 北京有色金属研究总院 | Copper alloy and aluminum alloy composite wire and preparation processing method thereof |
| DE102017008325A1 (en) * | 2017-08-29 | 2019-02-28 | Heinrich Stamm Gmbh | Wire electrode for the spark erosive cutting of an object |
| CN107785122A (en) * | 2017-09-20 | 2018-03-09 | 中天合金技术有限公司 | A kind of preparation technology of seamless Through ground wire |
| CN108320835A (en) * | 2018-02-01 | 2018-07-24 | 北京科技大学 | A kind of bimetallic railway run-through ground line and its short-flow production method |
| CN110340164A (en) * | 2019-08-22 | 2019-10-18 | 芜湖楚江合金铜材有限公司 | A kind of production technology of brass wire |
| CN112222552A (en) * | 2020-09-07 | 2021-01-15 | 宁波康强微电子技术有限公司 | Gamma electrode wire and preparation method thereof |
| CN111906163A (en) * | 2020-09-10 | 2020-11-10 | 广德克莱德新材料技术有限公司 | Multilayer metal-coated electric spark cutting wire and manufacturing method thereof |
| CN212264200U (en) * | 2020-09-10 | 2021-01-01 | 广德克莱德新材料技术有限公司 | Multilayer metal-coated electric spark cutting wire |
| CN113223755A (en) * | 2021-04-13 | 2021-08-06 | 南京理工大学 | High-strength and high-corrosion-resistance copper-stainless steel composite wire and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| S RAJAMANICKAM ET AL: "TOPSIS on High Aspect Ratio Electric Discharge Machining (EDM) of Ti-6Al-4V using 300 μm brass rotary tube electrodes", MATERIALS TODAY, 3 October 2018 (2018-10-03), pages 18489 * |
| 杨晓: "H62黄铜套管环境致裂行为分析", 理化检验(物理分册), 8 April 2015 (2015-04-08), pages 283 - 285 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113823435B (en) | 2024-04-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7530916B2 (en) | WIRE ELECTRODES FOR WIRE-CUT EDM WITH CARBON SURFACE LAYER AND METHOD FOR THEIR PREPARATION - Patent application | |
| EP2067560B1 (en) | System for manufacturing a base wire for an electrode wire for wire electrodischarge machining | |
| CN102922065B (en) | For the wire electrode of processing and the method for the manufacture of this wire electrode of discharging | |
| US11766728B2 (en) | Manufacturing method of textured and coated electrode wire | |
| KR102233844B1 (en) | Micro grain-texture electrode wire material and preparation method therefor and use thereof | |
| JP5231486B2 (en) | Electrode wire for electric discharge machining | |
| CN104805484B (en) | Production method for Cu-Ni/Ni-Ag double-composite coating extra-thin steel strip | |
| CN111799035B (en) | Processing technology of chromium-zirconium-copper contact line for high-speed electrified railway | |
| EP3597339B1 (en) | Electrode wire for electro-discharge machining and method for manufacturing the same | |
| CN104994984A (en) | Electrode wire for wire electric discharge machining, and method for producing same | |
| CN109801756B (en) | Preparation method of copper-aluminum composite wire | |
| CN115780934A (en) | Electrode wire and preparation method thereof | |
| CN1781652A (en) | Copper-free wires for gas-shielded arc welding | |
| CN113823435A (en) | Composite electrode wire, preparation method and application of composite electrode wire | |
| CN111215856B (en) | Steel core wire electrode wire plated with copper and then plated with zinc and production process | |
| JP3894501B2 (en) | Method for producing zinc coated electrode wire for electric discharge machine using hot dip galvanizing method | |
| JP3627626B2 (en) | Electrode wire for wire electrical discharge machining | |
| CN111001658B (en) | Steel-aluminum composite plate for automobile covering part and preparation method thereof | |
| CN107971591A (en) | Ultraprecise cuts the preparation method of superfine copper wires | |
| JPS59127921A (en) | Production of composite electrode wire for wire cut electric discharge machining | |
| JP2003291030A (en) | Electrode wire for wire electrical discharge machining | |
| CN108857286A (en) | Corrugated electric discharge machining electrode line and preparation method thereof | |
| KR20140100796A (en) | Wire electrode for electro discharge machining and thesame methode | |
| CN102527957A (en) | Hot-dipping coating polymetallic compound horizontal continuous casting copper-clad steel device | |
| JPS6171925A (en) | Method of producing composite electrode wire for electrospark machining |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |