CN212264200U - Multilayer metal-coated electric spark cutting wire - Google Patents
Multilayer metal-coated electric spark cutting wire Download PDFInfo
- Publication number
- CN212264200U CN212264200U CN202021965306.8U CN202021965306U CN212264200U CN 212264200 U CN212264200 U CN 212264200U CN 202021965306 U CN202021965306 U CN 202021965306U CN 212264200 U CN212264200 U CN 212264200U
- Authority
- CN
- China
- Prior art keywords
- layer
- cutting wire
- electric spark
- brass
- spark cutting
- 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.)
- Active
Links
Images
Landscapes
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
The utility model relates to a multilayer metal cladding electric spark cutting wire, this electric spark cutting wire comprises iron alloy inner core, the purple copper layer of cladding in the inner core outside and the brass layer of cladding in the purple copper layer outside. The utility model discloses have good machining performance and tensile strength for prior art, the electric conductivity can reach 30% -50%, can realize walking the silk processing soon, can also obtain the bright and clean, level and smooth cutting plane in surface simultaneously, in addition, can be used to the meticulous processing of small work piece.
Description
Technical Field
The present invention relates to a wire electrode for a metal conductive member by using electric discharge machining, and more particularly, to a wire electrode made of a double-layer or multi-layer composite metal material.
Background
Electric discharge machining is a method of machining a workpiece by the electroerosion action of pulse discharge between an electric discharge cutting wire electrode and a workpiece electrode. At present, wire cutting electrode wires are divided into slow-moving wires and fast-moving wires, wherein the fast-moving wires are made of molybdenum wires and tungsten wires, the electric conductivity of the molybdenum wires is about 30%, the molybdenum wires and the tungsten wires are high in strength and can be cut relatively fast, but the two materials are noble metals, on one hand, the material cost is high, on the other hand, the drawing difficulty is high, no gasified metal exists on the surfaces of the molybdenum wires and the tungsten wires, the cutting surfaces are rough, and after the fast-moving wires are processed, the slow-moving wires are required to be used for carrying out surface finish machining; the brass wire is adopted in one half of the slow-moving wire, the conductivity of the brass wire is about 20%, the material strength is low, the drawing performance is poor, the wire diameter of the cutting wire is thick and easy to break, the difficulty in drawing the micro-wire with high zinc content is high, and extremely fine parts cannot be machined.
In addition, a part of the electrode wires are made of copper-clad steel composite wires, but the electrode wires generally have the defects of low conductivity (generally 15-25%) and poor pulse current stability. In addition, the copper-clad steel composite material commonly used in the market is mainly produced by an electroplating method, toxic cyanide is required in the electroplating process, the production process can cause serious pollution to the environment, toxic substances can be remained in a finished product, the bonding force of the copper and the steel is poor, the copper and the steel are easy to lose, and copper powder is easy to fall off in the cutting process, so that the smoothness of the surface of a cut workpiece is influenced.
The above information is presented merely as background information to aid in understanding the present disclosure. No determination is made as to whether any of the above can be used as prior art against the present disclosure, nor is an assertion made.
Disclosure of Invention
The utility model aims at solving the problems of poor surface smoothness, high cost, slow cutting speed, poor fineness and the like of the fast-moving wire cutting wire in the prior art. Therefore, the utility model provides a multilayer metal-coated electric spark cutting wire.
In order to achieve the above purpose, the utility model adopts the technical scheme that: the utility model provides a multilayer metal cladding electric spark cutting wire, is including providing the ferroalloy inner core that supports high strength, cladding in succession the red copper layer and the continuous cladding in the inner core outside the red copper layer outside the brass layer, the red copper layer with combine closely and form the copper infiltration layer between the inner core, brass with the red copper layer between form the atom interlock, the electric conductivity of red copper layer be higher than inner core and brass layer, the brass layer have the melting and gasification temperature that are less than red copper layer and inner core.
In the technical scheme, the thickness of the red copper layer is 0.01-0.1mm, and the area ratio of the red copper layer in the cross section of the multilayer metal-coated electric spark cutting wire is 15-40%.
Optionally, the brass layer contains 30-50 wt% of zinc, and the thickness of the brass layer is 0.01-0.1 mm.
Optionally, the inner core is one of high carbon steel, medium carbon steel, low carbon steel, alloy steel or stainless steel.
Optionally, the diameter of the multilayer metal-clad electric spark cutting wire is between 0.01 and 0.50 mm.
Optionally, the brass layer is made of H62 or H70 brass.
Optionally, the thickness of the copper infiltrated layer is 100-1500 nm.
The utility model discloses a cladding method is with two kinds of red copper and brass cladding in proper order on the steel surface, makes red copper and steel surface combine closely, forms the effectual physical property anchor coat of one deck, forms the atom interlock between red copper and the brass, and three kinds of metal complex respectively have the characteristic, and the steel can provide tensile strength, makes the tensile strength of double-deck cladding line can reach 2000-2600MPa, makes the spark cutting wire easily machining, further can accomplish the microwire about 0.02mm diameter; the red copper can improve the electric conductivity of the electric spark cutting wire and has stable electric conductivity which can reach 30-50 percent at most; the brass layer on the surface has a lower melting point, and during online cutting, zinc in the brass is gasified to form air flow to take away corrosion chips on the surface of an object, so that the cutting surface is kept smooth and clean.
The utility model discloses have good machining performance and tensile strength for prior art, the electric conductivity can reach 30% -50%, can realize walking the silk processing soon, can also obtain the bright and clean, level and smooth cutting plane in surface simultaneously, in addition, can be used to the meticulous processing of small work piece.
Drawings
FIG. 1 is a process flow diagram of the present invention;
fig. 2 is a schematic structural view of the multi-layer metal-coated electric spark cutting wire of the present invention.
Wherein: 1. a steel inner core; 2. a layer of violet copper; 3. a layer of brass.
Detailed Description
The manufacturing method of the present invention will be further described with reference to the drawings and the embodiments.
Referring first to fig. 2, which shows a cross-section of a multilayer metal-clad electrical discharge cutting wire according to the present invention, it can be seen that the wire comprises: the iron alloy composite metal structure comprises an iron alloy inner core 1 capable of providing supporting strength, a red copper layer 2 compounded on the outer side of the inner core, and a brass layer 3 coated on the outer side of the red copper layer 2, wherein the red copper layer 2, the brass layer 3 and the inner core 1 form a double-layer coated composite metal structure. The inner core 1 can be made of high-carbon steel, medium-carbon steel, low-carbon steel, alloy steel or stainless steel, and mainly plays a role in supporting and increasing the tensile strength of the electric spark cutting wire, so that the machining performance and the wire moving speed of the electric spark cutting wire are improved, meanwhile, the electric spark cutting wire can be machined into micro wires with the diameter of about 0.02mm, and the fine machining of micro workpieces is realized.
The thickness of the red copper layer is 0.01-0.1mm, the area ratio of the red copper layer in the section of the electric spark cutting wire is 15-40%, the red copper can remarkably improve the conductivity of the composite wire, improve the stability of the conductivity of the electric spark cutting wire and save precious metal materials such as molybdenum wires, tungsten wires and the like. The purple copper layer 2 and the inner core 1 are tightly combined to form a copper infiltrated layer, and the thickness of the copper infiltrated layer is about 100-1500nm, so that the purple copper layer 2 and the inner core 1 can be firmly combined and cannot be peeled off during cutting.
The thickness of the brass layer 3 is 0.01-0.1mm, and the brass layer 3 contains 30-50 wt% of zinc, such as brass of types H62 and H70. The brass layer and the red copper layer are tightly combined to form atomic occlusion. During cutting, zinc in the brass layer is gasified, and scraps on the cutting surface are taken away, so that a smooth and clean cutting surface can be obtained, meanwhile, the brass layer is tightly combined with the red copper layer and is not easy to peel off, and the uneven cutting surface caused by the peeling of the copper layer can not be formed.
Since the structure and properties of spark cutting wires vary according to the heat treatment to which they are subjected during their manufacture. The utility model discloses an electric spark cutting wire is through thermal treatment in the course of working, and the copper atom in the purple copper layer forms the copper layer that oozes in entering into the steel through the diffusion. In the case of interdiffusion, the diffused metal content increases from the core to the surface of the spark-cutting wire, i.e. from the core to the surface it becomes increasingly copper-rich, and correspondingly, from the core to the surface brass it becomes increasingly zinc-rich. Since each phase of brass has different properties, this gives a series of layers of varying properties along the radius of the spark cutting wire. In order to adapt the concentration profile to the properties required at each depth, zinc enrichment at the surface and deeper down copper enrichment. Thus, with the present invention, steel, copper and zinc can be deposited alternately in a plurality of fine layers, i.e. of the order of 0.1-1.5 microns. The different phases of the brass obtained after the heat treatment then appear in a plurality of fine layers (about 0.1-0.5 or 1.5 microns). Thereby obtaining satisfactory mechanical strength, electrical conductivity, breaking strength, and high resistance to fretting.
Because the key technical node of metal composite lies in the complex cohesion of two kinds and two kinds above materials, requires that the copper layer will be even, and multilayer intermetallic cohesion is strong, consequently the utility model discloses a this electric spark cutting wire is prepared to following step (refer to fig. 1):
(1) selecting a steel rod with the diameter of 7-15mm, and cleaning the surface of the steel rod to remove stains and oxide layers on the surface of the steel rod, wherein the steel rod can be high-carbon steel, medium-carbon steel, low-carbon steel, alloy steel or stainless steel, and the high-carbon steel, the alloy steel, the stainless steel and the medium-carbon steel are subjected to heat treatment at the early stage to soften the material;
(2) polishing the steel rod by using an abrasive belt machine to replace the traditional pickling;
(3) washing with high-pressure water, namely washing surface impurities with water with the pressure of 15-35 MPa;
(4) drying to remove the moisture on the surface of the wire;
(5) drawing to the required wire size;
(6) degreasing, namely removing drawing powder and grease remained in wire drawing, and sanding the surface;
(7) washing the wire rod surface by high-pressure water under the pressure of 15-35 MPa;
(8) drying the steel rod on line for later use;
(9) the copper strips are configured according to 20-50% of the volume of the drawn steel rod, and in the embodiment, the copper strips with the thickness of 0.2-0.9mm are adopted for manufacturing;
(10) continuously and longitudinally deforming the copper strip by using a cladding machine with the diameter of 10mm-14mm, continuously cladding the copper strip on the outer side of the steel rod along the longitudinal direction, and continuously welding the seam of the copper strip by using argon arc welding to form a copper-clad steel rod;
(11) drawing the copper-clad steel rod by using a die, wherein the compression amount is 10-30%, and obtaining a red copper-clad steel blank with the diameter of 5-10 mm;
(12) carrying out wire drawing powder removing and cleaning treatment on the surface of the red copper-clad steel blank and sanding the surface by using an abrasive belt machine;
(13) preparing a brass band according to 20-50% of the volume of the red copper-clad steel blank, wherein the zinc content of the brass band is 30-50%, and in the embodiment, the thickness of the brass band is 0.2-0.9 mm;
(14) continuously deforming the brass band by using a cladding machine with the diameter of 8mm-12mm, continuously cladding the brass band on the surface of the red copper clad steel blank along the longitudinal direction, and continuously welding two side edges of the brass band to form a double-layer copper clad steel rod;
(15) drawing the coated double-layer copper-clad steel rod by using a die with 10-30% of compression amount to ensure that red copper and brass form atomic occlusion to obtain a double-layer copper-clad steel blank;
(16) annealing the double-layer copper-clad steel blank at 500-700 ℃, and then continuously drawing to 0.02mm to obtain the multilayer metal-clad electric spark cutting wire.
Preferably, before the material cladding welding, the raw material is subjected to surface roughening by using an abrasive belt machine, so that the combination of two metal contact surfaces in the cladding process can be facilitated, and the atom penetration range is larger and deeper. The above steps, such as welding, drawing, heat treatment, etc., are always performed under the protection of inert gas such as argon, nitrogen, etc.
The electric spark cutting wire with the wire diameter of 0.02mm is finally obtained through the steps, the area ratio of the red copper layer in the section of the electric spark cutting wire is 25%, the tensile strength of the electric spark cutting wire can reach 2500MPa, the electric conductivity of the electric spark cutting wire reaches 40%, and the brass layer contains 30-50% of zinc, so that the air flow of the cutting surface can be increased, the surface of a workpiece is smoother and smoother after being cut, the cutting speed is improved, the pulse current is stabilized, and the wire moving speed can reach 8-10 m/s.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present application are intended to be covered by the scope of the present invention.
Claims (7)
1. A multilayer metal-clad electric spark cutting wire is characterized in that: including providing the iron alloy inner core that supports high strength, continuous cladding the inner core outside red copper layer and continuous cladding be in red copper outer brass layer, red copper layer with between the inner core closely combine and form the copper infiltration layer, brass with red copper layer between form the atom interlock, red copper layer the conductivity be higher than inner core and brass layer, the brass layer melting and gasification temperature that are less than red copper layer and inner core have.
2. The multi-layer metal-clad electric spark cutting wire according to claim 1, wherein: the thickness of the red copper layer is 0.01-0.1mm, and the area ratio of the red copper layer in the cross section of the multilayer metal-coated electric spark cutting wire is 15-40%.
3. The multi-layer metal-clad electric spark cutting wire according to claim 1, wherein: the thickness of the brass layer is 0.01-0.1 mm.
4. The multi-layer metal-clad electric spark cutting wire according to claim 1, wherein: the inner core is one of high carbon steel, medium carbon steel, low carbon steel, alloy steel or stainless steel.
5. The multi-layer metal-clad electric spark cutting wire according to claim 1, wherein: the diameter of the multilayer metal-clad electric spark cutting wire is between 0.01 and 0.50 mm.
6. The multi-layer metal-clad electric spark cutting wire according to claim 1, wherein: the brass layer is made of H62 brass or H70 brass.
7. The multi-layer metal-clad electric spark cutting wire according to claim 1, wherein: the thickness of the copper infiltrated layer is 100-1500 nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021965306.8U CN212264200U (en) | 2020-09-10 | 2020-09-10 | Multilayer metal-coated electric spark cutting wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021965306.8U CN212264200U (en) | 2020-09-10 | 2020-09-10 | Multilayer metal-coated electric spark cutting wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212264200U true CN212264200U (en) | 2021-01-01 |
Family
ID=73871227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021965306.8U Active CN212264200U (en) | 2020-09-10 | 2020-09-10 | Multilayer metal-coated electric spark cutting wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212264200U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113823435A (en) * | 2021-09-08 | 2021-12-21 | 湖州金钛导体技术有限公司 | Composite electrode wire, preparation method and application of composite electrode wire |
-
2020
- 2020-09-10 CN CN202021965306.8U patent/CN212264200U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113823435A (en) * | 2021-09-08 | 2021-12-21 | 湖州金钛导体技术有限公司 | Composite electrode wire, preparation method and application of composite electrode wire |
| CN113823435B (en) * | 2021-09-08 | 2024-04-23 | 湖州金钛导体技术有限公司 | Composite electrode wire, preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6029778B1 (en) | High-precision zinc-based alloy electrode wire and manufacturing method thereof | |
| CA2302202C (en) | Electrode wire for use in electric discharge machining and process for preparing same | |
| US6781081B2 (en) | Wire electrode for spark erosion cutting | |
| Kapoor et al. | Recent developments in wire electrodes for high performance WEDM | |
| EP3251777B1 (en) | Scale-style micro-texture electrode wire material and preparation method therefor and use thereof | |
| KR101486028B1 (en) | Electrode wire for electrical discharge machining | |
| KR20130016522A (en) | Wire electrode for electro discharge machining and thesame methode | |
| CN110125499B (en) | Carbon-containing electrode wire for slow-moving wire electric spark machining on surface layer and preparation method thereof | |
| CN102275046A (en) | Resistance brazing method for zinc-coated steel plate | |
| CN103537768A (en) | Wire electrode for WEDM-LS electrical discharge machining and preparation method of wire electrode | |
| CN212264200U (en) | Multilayer metal-coated electric spark cutting wire | |
| US11766728B2 (en) | Manufacturing method of textured and coated electrode wire | |
| JP3389612B2 (en) | Electrode wire for wire cut electric discharge machining | |
| CN111906163A (en) | Multilayer metal-coated electric spark cutting wire and manufacturing method thereof | |
| JP3627626B2 (en) | Electrode wire for wire electrical discharge machining | |
| JPH04370613A (en) | Electric contact material and its manufacture | |
| CN1089047C (en) | Preparation of welding wire of low Cr and high Mn austenitic steel | |
| KR101051884B1 (en) | Manufacturing method of welding tip | |
| JP2713350B2 (en) | Electrode wire for wire electric discharge machining | |
| CN113823435B (en) | Composite electrode wire, preparation method and application thereof | |
| KR20140100796A (en) | Wire electrode for electro discharge machining and thesame methode | |
| JPS6099526A (en) | Electrode wire for wire-cut electric spark machine | |
| JP3948166B2 (en) | Electrode wire for electric discharge machining | |
| JP2001334415A (en) | Electrode wire for wire cutting electric discharge machining | |
| Kapoor et al. | Current research trends on wire electrodes for wire electrical discharge machining |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |