CN102806394A - Skin-core structure wire for molybdenum-copper alloy wire electrical discharge machining - Google Patents
Skin-core structure wire for molybdenum-copper alloy wire electrical discharge machining Download PDFInfo
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- CN102806394A CN102806394A CN2011101426328A CN201110142632A CN102806394A CN 102806394 A CN102806394 A CN 102806394A CN 2011101426328 A CN2011101426328 A CN 2011101426328A CN 201110142632 A CN201110142632 A CN 201110142632A CN 102806394 A CN102806394 A CN 102806394A
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Abstract
The invention discloses a skin-core structure wire for molybdenum-copper alloy wire electrical discharge machining. The skin-core structure wire is characterized in that an outer skin layer of the skin-core structure is a metal molybdenum layer, an inner core layer of the skin-core structure is a metal wire layer, and the metal wire layer comprises the components of Cu, Ni, Fe, Zn, Si and Mo. The skin-core structure wire is used for wire electrical discharge machining, the corrosion resistance and cutting speed of an electrode wire in working fluid can be improved, and the surface roughness is reduced.
Description
Technical field
The present invention relates to a kind of skin-core structure silk material, concrete, the present invention relates to a kind of Wire EDM with skin-core structure silk material.
Background technology
The principle of spark machined is in certain medium, loses based on the galvano-cautery phenomenon of pulse feature spark discharge between instrument and the workpiece (positive and negative electrode) and removes unnecessary metal, thereby reach the predetermined processing request such as size, shape and surface quality to part.Wire-cut Electrical Discharge Machining (being called for short WEDM) is a kind of new process form that on the spark machined basis, grows up as far back as the Soviet Union in late 1950s; The basic principle of Wire-cut Electrical Discharge Machining is to utilize the thin plain conductor that constantly moves as tool-electrode, forms pulse feature discharge corrosion workpiece between itself and the workpiece and realizes processing.Wire-cut Electrical Discharge Machining has that allowance is little, machining accuracy is high, with short production cycle, outstanding advantage such as processing cost is low.
Use wire electrode for Wire-cut Electrical Discharge Machining, it is desirable to it and have that process velocity is fast, tensile strength is high, toughness is strong, good conductivity, characteristic such as cheap.Existing Wire-cut Electrical Discharge Machining can be divided into two big types with wire electrode, promptly hurry up the thread feed electric spark line cutting electrode silk and the thread feed electric spark line cutting electrode silk of being careful.The thread feed electric spark line cutting electrode silk of hurrying up that prior art is known has molybdenum filament, tungsten filament, tungsten silk etc.; Through the workpiece of fast wire wire electrode processing, its precision, fineness are all poor.When to the precision of processing parts, when fineness is had relatively high expectations, such as the parts of precision die, precision instrument, the demanding part of surface quality etc., the thread feed electric spark line of hurrying up cutting can not be satisfied its instructions for use.
Summary of the invention
Inventor of the present invention has proposed a kind of skin-core structure wire rod through long-term experiment and practice, as the electrode wires material of Wire EDM.Electrode wires material of the present invention can guarantee that the Surface Machining roughness of precision die, precision instrument is low and described skin-core structure wire rod cost is cheap relatively in the cutting processing speed of thread feed electric spark line cutting metal wire that guarantees to hurry up.
The technical scheme that the present invention adopted is: a kind of molybdenum-copper Wire EDM is with skin-core structure silk material; The exodermis that it is characterized in that skin-core structure is a metal molybdenum; Inner sandwich layer is a metal wire layer, and the component of described metal wire layer comprises: Cu, Ni, Fe, Zn, Si and Mo.
Preferably, the quality of said exodermis is the 10-20% of inner sandwich layer quality.
Preferably, the component and the ratio of described alloy are respectively: Cu 35%-41%, and Ni 8.0%-9.6%, Fe 2.1-2.5%, Zn 1.5-2.5%, Si 0.30-0.60%, surplus is molybdenum and unavoidable impurities.
In addition, the invention also discloses the preparation method of above-mentioned molybdenum-copper Wire EDM, it is characterized in that comprising following processing step with skin-core structure silk material:
(1) in vacuum induction melting furnace according to the composition of the alloy of inner sandwich layer and form reinforcedly, and make its fusing, obtain melt metal liquid;
(2) melt metal liquid is imported in the continuous casting installation for casting preparation alloy wire base;
(3) the alloy preform material is stretched and online annealing through cooling, process the wire that diameter is 2-3mm;
(4) utilize 0.2-0.4mm thick Mo thin slice parcel described wire of step (3) and compacting, stretch through the wire drawing machine multi-pass, obtaining diameter is the silk material of 0.20-0.25mm;
(5) stress relief annealing obtains skin-core structure silk material.
Wherein, in described step (1), preferred fusion temperature is 1200-1350 ℃, and temperature retention time is 10-200 minute; Preferred, described fusion temperature is 1250-1300 ℃, and temperature retention time is 20-100 minute.
Wherein, in described step (2), preferred, casting temperature is 1100-1200 ℃, and the crystallizer cooling water pressure is 0.6-0.9MPa during continuous casting, and cold in-water temperature is 5-30 ℃, and casting speed is 1250-1350mm/min, obtains the alloy preform material; Preferred, casting temperature is 1100-1150 ℃, and the crystallizer cooling water pressure is 0.7-0.8MPa during continuous casting.
Wherein, in described step (3), described online annealing temperature is 600-650 ℃, and annealing time is 10-50 second, so that crystallization again takes place the wire rod that alloy material line base obtains after stretched, is convenient to follow-up stretch process.
Wherein, in described step (4), the quality of described Mo thin slice is the 10-20% of described wire quality.
Wherein, in described step (5), described stress relief annealing temperature is 250-350 ℃, and corresponding annealing time is 10-30 second, to eliminate the machining stress of final electrode wires finished product.
The existing thread feed electric spark electrode wires of hurrying up is compared in the present invention and the prior art, has following remarkable advantage and beneficial effect:
The silk of the skin-core structure that (1) the application adopted is just compared with traditional electrode wires, has improved the corrosion resistance of wire in working fluid, and has reduced the surface roughness after the processing.
(2) its crystal property of wire of employing the application's copper alloy manufacturing is good, has stable tensile strength, has improved cutting speed.
Description of drawings
Fig. 1 is the thread feed electric spark line cutting electrode silk processing sketch map of hurrying up.
The specific embodiment
Hereinafter will combine concrete embodiment that technical scheme of the present invention is done further detailed explanation.
Embodiment 1
Prepare the alloy raw material (can be the high pure raw material of bulk or powder) that adds up to 100Kg by following quality, wherein, Cu:35.0Kg; Ni:8.0Kg; Fe:2.1Kg; Zn:1.5Kg; Si:0.30Kg; Mo with surplus; The alloy raw material of preparation is put into induction melting furnace make its fusing, fusion temperature is 1350 ℃, and temperature retention time is 50 minutes; The alloy liquid of fusion is imported in the horizontal casting stove; Adopt continuous cast method to prepare the alloy wire base; Casting parameters is: casting temperature: 1200 ℃, the crystallizer cooling water pressure is 0.7～0.8MPa during continuous casting, cold in-water temperature 5-30 ℃; The Inlet and outlet water temperature difference is 5～15 ℃, and casting speed is 1250mm/min; With prepared alloy preform through multiple tracks cold stretch and online annealing, annealing temperature: 650 ℃, annealing time: 25 seconds; The diameter wiry for preparing is 2.5mm.Described chemical composition wiry with consist of: Cu:35.0%; Ni:8.0%; Fe:2.1%; Zn:1.5%; Si:0.30%; Mo with surplus.
Prepare the alloy raw material (can be the high pure raw material of bulk or powder) that adds up to 100Kg by following quality, wherein, Cu:41.0Kg; Ni:9.6Kg; Fe:2.5Kg; Zn:2.5Kg; Si:0.60Kg; Mo with surplus; The alloy raw material of preparation is put into induction melting furnace make its fusing, fusion temperature is 1200 ℃, and temperature retention time is 200 minutes; The alloy liquid of fusion is imported in the horizontal casting stove; Adopt continuous cast method to prepare the alloy wire base; Casting parameters is: casting temperature: 1100 ℃, the crystallizer cooling water pressure is 0.7～0.8MPa during continuous casting, cold in-water temperature 5-30 ℃; The Inlet and outlet water temperature difference is 5～15 ℃, and casting speed is 1350mm/min; With prepared alloy preform through multiple tracks cold stretch and online annealing, annealing temperature: 600 ℃, annealing time: 50 seconds; The diameter wiry for preparing is 2.5mm.Described molybdenum-copper chemical composition wiry with consist of: Cu:41.0%; Ni:9.6%; Fe:2.5%; Zn:2.5%; Si:0.60%; Mo with surplus.
Embodiment 3
Prepare the alloy raw material (can be the high pure raw material of bulk or powder) that adds up to 100Kg by following quality, wherein, Cu:41.0Kg; Ni:9.6Kg; Fe:2.1Kg; Zn:1.5Kg; Si:0.30Kg; Mo with surplus; The alloy raw material of preparation is put into induction melting furnace make its fusing, fusion temperature is 1250 ℃, and temperature retention time is 150 minutes; The alloy liquid of fusion is imported in the horizontal casting stove; Adopt continuous cast method to prepare the alloy wire base; Casting parameters is: casting temperature: 1150 ℃, the crystallizer cooling water pressure is 0.7～0.8MPa during continuous casting, cold in-water temperature 5-30 ℃; The Inlet and outlet water temperature difference is 5～15 ℃, and casting speed is 1300mm/min; With prepared alloy preform through multiple tracks cold stretch and online annealing, annealing temperature: 630 ℃, annealing time: 30 seconds; The diameter wiry for preparing is 2.5mm.Described molybdenum-copper chemical composition wiry with consist of: Cu:41.0%; Ni:9.6%; Fe:2.1%; Zn:1.5%; Si:0.30%; Mo with surplus.
Embodiment 4
Prepare the alloy raw material (can be the high pure raw material of bulk or powder) that adds up to 100Kg by following quality, wherein, Cu:35.0Kg; Ni:8.0Kg; Fe:2.5Kg; Zn:2.5Kg; Si:0.60Kg; Mo with surplus; The alloy raw material of preparation is put into induction melting furnace make its fusing, fusion temperature is 1250 ℃, and temperature retention time is 100 minutes; The alloy liquid of fusion is imported in the horizontal casting stove; Adopt continuous cast method to prepare the alloy wire base; Casting parameters is: casting temperature: 1150 ℃, the crystallizer cooling water pressure is 0.7～0.8MPa during continuous casting, cold in-water temperature 5-30 ℃; The Inlet and outlet water temperature difference is 5～15 ℃, and casting speed is 1300mm/min; With prepared alloy preform through multiple tracks cold stretch and online annealing, annealing temperature: 625 ℃, annealing time: 25 seconds; The diameter wiry for preparing is 2.5mm.Described molybdenum copper chemical composition wiry with consist of: Cu:35.0%; Ni:8.0%; Fe:2.5%; Zn:2.5%; Si:0.60%; Mo with surplus.
Embodiment 5
Prepare the alloy raw material (can be the high pure raw material of bulk or powder) that adds up to 100Kg by following quality, wherein, Cu:38.0Kg; Ni:9.0Kg; Fe:2.3Kg; Zn:2.3Kg; Si:0.45Kg; Mo with surplus; The alloy raw material of preparation is put into induction melting furnace make its fusing, fusion temperature is 1280 ℃, and temperature retention time is 100 minutes; The alloy liquid of fusion is imported in the horizontal casting stove; Adopt continuous cast method to prepare the alloy wire base; Casting parameters is: casting temperature: 1150 ℃, the crystallizer cooling water pressure is 0.7～0.8MPa during continuous casting, cold in-water temperature 5-30 ℃; The Inlet and outlet water temperature difference is 5～15 ℃, and casting speed is 1300mm/min; With prepared alloy preform through multiple tracks cold stretch and online annealing, annealing temperature: 625 ℃, annealing time: 25 seconds; The diameter wiry for preparing is 2.5mm.Described molybdenum-copper chemical composition wiry with consist of: Cu:38.0%; Ni:9.0%; Fe:2.3%; Zn:2.3%; Si:0.45%; Mo with surplus.
Skin-core structure silk material finished product
Utilize the thick Mo thin slice of 0.2mm to wrap up wire and the compacting that is obtained by embodiment 1-5 respectively successively, stretch through the wire drawing machine multi-pass, obtaining diameter is the silk material of 0.25mm, and the quality of described Mo thin slice is 12% of a described wire quality; At last under 250 ℃ condition, carry out stress relief annealing 30 seconds, obtain numbering the skin-core structure silk material that is followed successively by A1-A5.
Test No. is followed successively by the tensile strength and the percentage elongation of the skin-core structure silk material of A1-A5 on the universal electrical tensilometer; Adopt its conductance of TX-300A intelligence electric lead resistivity measurement appearance test; Test described Wire EDM speed wiry with No. 45 steel as workpiece, adopt the surface roughness after tracer method is measured processing.
Comparative example 1
Normally used Mo wire electrode in the prior art; The tensile strength and the percentage elongation of this wire electrode of test on the universal electrical tensilometer; Adopt its conductance of TX-300A intelligence electric lead resistivity measurement appearance test; With the Wire EDM speed that No. 45 steel are tested described wire electrode as workpiece, adopt the surface roughness after tracer method is measured processing.The result of the foregoing description and comparative example is listed in the table 1.
Experimental result data
The data performance of table 1 embodiment and comparative example
Claims (9)
1. a molybdenum-copper Wire EDM is with skin-core structure silk material, and the exodermis that it is characterized in that skin-core structure is a metal molybdenum, and inner sandwich layer is a metal wire layer, and the component of described metal wire layer comprises: Cu, Ni, Fe, Zn, Si and Mo.
2. the described molybdenum alloy Wire EDM of claim 1 is with skin-core structure silk material; It is characterized in that described component wiry and ratio are respectively: Cu 35%-41%; Ni 8.0%-9.6%, Fe 2.1-2.5%, Zn 1.5-2.5%; Si 0.30-0.60%, surplus is molybdenum and unavoidable impurities.
3. claim 1 or 2 described skin-core structure silk materials, the quality of said exodermis is the 10-20% of inner sandwich layer quality.
4. each described molybdenum-copper Wire EDM of claim 1-3 is characterized in that comprising following processing step with the preparation method of skin-core structure silk material:
(1) in vacuum induction melting furnace according to the composition of the alloy of inner sandwich layer and form reinforcedly, and make its fusing, obtain melt metal liquid;
(2) melt metal liquid is imported in the continuous casting installation for casting preparation alloy wire base;
(3) the alloy preform material is stretched and online annealing through cooling, process the wire that diameter is 2-3mm;
(4) utilize 0.2-0.4mm thick Mo thin slice parcel described wire of step (3) and compacting, stretch through the wire drawing machine multi-pass, obtaining diameter is the silk material of 0.20-0.25mm;
(5) stress relief annealing obtains skin-core structure silk material.
5. the described preparation method of claim 4, in described step (1), preferred fusion temperature is 1200-1350 ℃, temperature retention time is 10-200 minute.
6. the described preparation method of claim 4, in described step (2), casting temperature is 1100-1200 ℃, and the crystallizer cooling water pressure is 0.6-0.9MPa during continuous casting, and cold in-water temperature is 5-30 ℃, and casting speed is 1250-1350mm/min.
7. the described preparation method of claim 4, in described step (3), described online annealing temperature is 600-650 ℃, annealing time is 10-50 second.
8. the described preparation method of claim 4, in described step (4), the quality of described Mo thin slice is the 10-20% of described wire quality.
9. the described preparation method of claim 4, in described step (5), described stress relief annealing temperature is 250-350 ℃, corresponding annealing time is 10-30 second.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101426328A CN102806394A (en) | 2011-05-30 | 2011-05-30 | Skin-core structure wire for molybdenum-copper alloy wire electrical discharge machining |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011101426328A CN102806394A (en) | 2011-05-30 | 2011-05-30 | Skin-core structure wire for molybdenum-copper alloy wire electrical discharge machining |
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| CN102806394A true CN102806394A (en) | 2012-12-05 |
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| CN2011101426328A Pending CN102806394A (en) | 2011-05-30 | 2011-05-30 | Skin-core structure wire for molybdenum-copper alloy wire electrical discharge machining |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103447641A (en) * | 2013-08-30 | 2013-12-18 | 广西锦新科技有限公司 | Low-speed wire cut electrical discharge machining metal wire and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59127921A (en) * | 1983-01-11 | 1984-07-23 | Sumitomo Electric Ind Ltd | Production of composite electrode wire for wire cut electric discharge machining |
| JPH07156021A (en) * | 1993-12-06 | 1995-06-20 | Hitachi Cable Ltd | Electrode wire for electrical discharge machining |
| CN1255167A (en) * | 1997-04-18 | 2000-05-31 | 奥林公司 | Grain refined tin brass |
| US6495788B1 (en) * | 1999-12-09 | 2002-12-17 | Charmilles Technologies Sa | Electrode for machining a piece by electro-erosion and its process for production |
| JP2005329504A (en) * | 2004-05-20 | 2005-12-02 | Hitachi Cable Ltd | Electrode wire for wire electric discharge machining and electric discharge machined product manufactured using the same |
| CN201239836Y (en) * | 2008-07-16 | 2009-05-20 | 金劲 | Composite wire electrode for fast wire winding |
-
2011
- 2011-05-30 CN CN2011101426328A patent/CN102806394A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59127921A (en) * | 1983-01-11 | 1984-07-23 | Sumitomo Electric Ind Ltd | Production of composite electrode wire for wire cut electric discharge machining |
| JPH07156021A (en) * | 1993-12-06 | 1995-06-20 | Hitachi Cable Ltd | Electrode wire for electrical discharge machining |
| CN1255167A (en) * | 1997-04-18 | 2000-05-31 | 奥林公司 | Grain refined tin brass |
| US6495788B1 (en) * | 1999-12-09 | 2002-12-17 | Charmilles Technologies Sa | Electrode for machining a piece by electro-erosion and its process for production |
| JP2005329504A (en) * | 2004-05-20 | 2005-12-02 | Hitachi Cable Ltd | Electrode wire for wire electric discharge machining and electric discharge machined product manufactured using the same |
| CN201239836Y (en) * | 2008-07-16 | 2009-05-20 | 金劲 | Composite wire electrode for fast wire winding |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103447641A (en) * | 2013-08-30 | 2013-12-18 | 广西锦新科技有限公司 | Low-speed wire cut electrical discharge machining metal wire and preparation method thereof |
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Application publication date: 20121205 |