CN111215856A - Steel core wire electrode wire plated with copper and then plated with zinc and production process - Google Patents
Steel core wire electrode wire plated with copper and then plated with zinc and production process Download PDFInfo
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- CN111215856A CN111215856A CN202010109331.4A CN202010109331A CN111215856A CN 111215856 A CN111215856 A CN 111215856A CN 202010109331 A CN202010109331 A CN 202010109331A CN 111215856 A CN111215856 A CN 111215856A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/04—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire
- B21C37/042—Manufacture of coated wire or bars
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/525—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length for wire, for rods
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/38—Electroplating: Baths therefor from solutions of copper
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
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Abstract
The invention discloses a steel core wire electrode wire plated with copper and then plated with zinc and a production process, which is characterized by comprising the following steps: the first step is as follows: carrying out surface pretreatment on the steel wire subjected to heat treatment; the second step is that: washing with water after surface pretreatment is finished; the third step: after cleaning, pyrophosphate is adopted for pre-plating; the fourth step: after the pre-plating is finished, washing with water, and then plating copper; the fifth step: after copper plating is finished, washing with water, and then galvanizing; and a sixth step: and (3) carrying out water cleaning after the galvanization is finished, carrying out drying treatment after the cleaning is finished, and carrying out the seventh step: drawing the electrode wire into electrode wires with different specifications through a water tank after drying; eighth step: and (5) carrying out internal stress elimination treatment, and finishing the processing of the electrode wire after the completion. According to the invention, the steel core wire is adopted to replace a brass wire electrode, so that the cost is low, the tensile strength is high, the wire is not easy to break, copper is plated on the steel core and then zinc is plated, the conductivity is better than that of the brass wire, the cutting performance of the electrode wire is better, and the service life is longer.
Description
Technical Field
The invention relates to a wire electrode, in particular to a wire electrode with a steel core wire plated with copper and then plated with zinc and a production process.
Background
In recent years, machining technology is changing day by day, and wire cut electrical discharge machining has also been rapidly developed as a special precision machining technology. The development of wire cutting technology has relied, in important part, on the development of wire electrode technology. With the expansion of the production field of the electrode wire, the requirements on the breakage and the strength of the electrode wire are gradually improved besides the higher requirement on the electrical conductivity of the electrode wire, the common electrode wire is formed by drawing pure brass and is limited by the material, the steel wire is easy to break and has lower strength and high cost. Therefore, the steel core wire electrode wire plated with copper and then plated with zinc and the production process are provided.
Disclosure of Invention
The invention aims to solve the problems and provides a wire electrode with a steel core wire plated with copper and then plated with zinc and a production process.
In order to achieve the purpose, the invention provides the following technical scheme of a steel core wire electrode wire plated with copper and then plated with zinc and a production process, and the production process is characterized by comprising the following steps of:
the first step is as follows: carrying out surface pretreatment on the steel wire subjected to heat treatment;
the second step is that: after the surface pretreatment is finished, water washing is carried out to clean the residues of the previous working procedure;
the third step: after cleaning, pyrophosphate is adopted for pre-plating, so as to ensure the binding force of sulfate copper plating;
the fourth step: after the pre-plating is finished, water washing is carried out, copper plating is carried out, the sulfate copper plating process is simple, the current efficiency is high, the cost is low, and a thicker copper plating layer can be obtained;
the fifth step: after copper plating is finished, water is washed, and then zinc plating is carried out, and as zinc with a low melting point has an obvious effect on improving the discharge performance of the electrode wire, the cutting speed, and the processing precision and the finish degree of a cut surface can be improved;
and a sixth step: water cleaning is carried out after the galvanization is finished, drying treatment is carried out after the cleaning is finished,
the seventh step: drawing the electrode wire into electrode wires with different specifications through a water tank after drying;
eighth step: the wire electrode has internal stress after being drawn, the internal stress is eliminated in order to properly improve the plasticity of the wire electrode, and the wire electrode is processed after the treatment.
Further preferably, the steel wire can adopt one of high carbon, medium carbon and low carbon steel wires.
Preferably, the surface pretreatment is to remove an oxide layer on the surface of the steel wire subjected to heat treatment and a phosphating film on the steel wire subjected to phosphating treatment, and the surface pretreatment mainly adopts sulfuric acid with the proportion of 100-300 g/L and is carried out at normal temperature.
Further preferably, the pre-plating is pyrophosphate copper plating, and the main components are as follows: 25-70 g/L copper pyrophosphate, 250-350 g/L potassium pyrophosphate, 15-65 ℃ temperature and 8.5-9.0 PH value.
Preferably, the electrode wire needs to ensure certain conductivity and certain copper plating thickness, and sulfate copper plating can ensure the conductivity of the electrode wire; the copper plating adopts sulfate copper plating at the temperature of 10-40 ℃, and comprises the following main components: 180-220 g/L of copper sulfate and 50-70 g/L of sulfuric acid.
Further preferably, the zinc has lower hardness than brass, so that the loss of the guide wire part in the device can be reduced during cutting; the zinc plating adopts zinc sulfate to perform zinc plating at normal temperature, and the zinc plating comprises the following main components: 300-600 g/l of zinc sulfate.
Further preferably, when the residual moisture on the galvanized wire electrode is dried, the wire electrode is placed into an oven for drying, and the temperature of the oven is 100-200 ℃ in order to ensure the product quality.
Preferably, the electrode wire is tempered for eliminating internal stress, and the tempering temperature is 200-650 ℃.
Further preferably, the electrode wire comprises a steel wire layer 1, a copper plating layer 2 and a zinc plating layer 3 from inside to outside in sequence.
According to the invention, the steel core wire is adopted to replace a brass wire electrode, so that the cost is low, the tensile strength is high, the wire is not easy to break, copper is plated on the steel core and then zinc is plated, the conductivity is better than that of the brass wire, the cutting performance of the electrode wire is better, and the service life is longer.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention in use.
Illustration of the drawings: 1. a steel wire layer; 2. plating a copper layer; 3. and (4) a zinc coating.
Detailed Description
The steel core wire electrode wire plated with copper and then plated with zinc and the production process thereof according to the present invention will be further described with reference to the accompanying drawings and embodiments 1 to 3.
As shown in figure 1, the electrode wire processed by the invention comprises a steel wire layer 1, a copper plating layer 2 and a zinc plating layer 3 from inside to outside.
Example 1:
the first step is as follows: carrying out surface pretreatment on the steel wire subjected to heat treatment; the method is carried out at normal temperature by adopting 100 g/l of sulfuric acid;
the second step is that: after the surface pretreatment is finished, water washing is carried out to clean the residues of the previous working procedure;
the third step: after cleaning, pyrophosphate is adopted for pre-plating, so as to ensure the binding force of sulfate copper plating; pyrophosphate is adopted for copper plating, and the main components are as follows: 25 g/L of copper pyrophosphate and 250 g/L of potassium pyrophosphate; the temperature is 15-65 ℃ and the PH value is 8.5-9.0;
the fourth step: after the pre-plating is finished, water washing is carried out, copper plating is carried out, the sulfate copper plating process is simple, the current efficiency is high, the cost is low, and a thicker copper plating layer can be obtained; the copper plating temperature is 10-40 ℃, sulfate copper is adopted, and the copper plating solution mainly comprises the following components: 180 g/L copper sulfate and 50 g/L sulfuric acid
The fifth step: after copper plating is finished, water is washed, and then zinc plating is carried out, and as zinc with a low melting point has an obvious effect on improving the discharge performance of the electrode wire, the cutting speed, and the processing precision and the finish degree of a cut surface can be improved; zinc sulfate is adopted for zinc plating at normal temperature, and the zinc plating solution comprises the following main components: zinc sulfate 300 g/l;
and a sixth step: after the galvanization is finished, water cleaning is carried out, and drying treatment is carried out after the cleaning is finished; the temperature of the oven is 100-200 ℃;
the seventh step: drawing the electrode wire into electrode wires with different specifications through a water tank after drying;
eighth step: internal stress exists in the electrode wire after drawing, internal stress elimination treatment is needed to improve the plasticity of the electrode wire properly, and the electrode wire is processed after the treatment; carrying out internal stress elimination through tempering treatment, wherein the tempering temperature is 200-650 ℃; the processed electrode wire comprises a steel wire layer 1, a copper plating layer 2 and a zinc plating layer 3 from inside to outside in sequence.
Example 2:
the first step is as follows: carrying out surface pretreatment on the steel wire subjected to heat treatment; adopting sulfuric acid 300 g/l, and carrying out the reaction at normal temperature;
the second step is that: after the surface pretreatment is finished, water washing is carried out to clean the residues of the previous working procedure;
the third step: after cleaning, pyrophosphate is adopted for pre-plating, so as to ensure the binding force of sulfate copper plating; pyrophosphate is adopted for copper plating, and the main components are as follows: 75 g/L of copper pyrophosphate and 350 g/L of potassium pyrophosphate; the temperature is 15-65 ℃ and the PH value is 8.5-9.0;
the fourth step: after the pre-plating is finished, water washing is carried out, copper plating is carried out, the sulfate copper plating process is simple, the current efficiency is high, the cost is low, and a thicker copper plating layer can be obtained; the copper plating temperature is 10-40 ℃, sulfate copper is adopted, and the copper plating solution mainly comprises the following components: 220 g/L copper sulfate and 70 g/L sulfuric acid
The fifth step: after copper plating is finished, water is washed, and then zinc plating is carried out, and as zinc with a low melting point has an obvious effect on improving the discharge performance of the electrode wire, the cutting speed, and the processing precision and the finish degree of a cut surface can be improved; zinc sulfate is adopted for zinc plating at normal temperature, and the zinc plating solution comprises the following main components: zinc sulfate 600 g/l;
and a sixth step: after the galvanization is finished, water cleaning is carried out, and drying treatment is carried out after the cleaning is finished; the temperature of the oven is 100-200 ℃;
the seventh step: drawing the electrode wire into electrode wires with different specifications through a water tank after drying;
eighth step: internal stress exists in the electrode wire after drawing, internal stress elimination treatment is needed to improve the plasticity of the electrode wire properly, and the electrode wire is processed after the treatment; and (4) carrying out internal stress elimination through tempering treatment, wherein the tempering temperature is 200-650 ℃.
Example 3
The first step is as follows: carrying out surface pretreatment on the steel wire subjected to heat treatment; 200 g/l of sulfuric acid is adopted and the reaction is carried out at normal temperature;
the second step is that: after the surface pretreatment is finished, water washing is carried out to clean the residues of the previous working procedure;
the third step: after cleaning, pyrophosphate is adopted for pre-plating, so as to ensure the binding force of sulfate copper plating; pyrophosphate is adopted for copper plating, and the main components are as follows: 40 g/L of copper pyrophosphate and 310 g/L of potassium pyrophosphate; the temperature is 15-65 ℃ and the PH value is 8.5-9.0;
the fourth step: after the pre-plating is finished, water washing is carried out, copper plating is carried out, the sulfate copper plating process is simple, the current efficiency is high, the cost is low, and a thicker copper plating layer can be obtained; the copper plating temperature is 10-40 ℃, sulfate copper is adopted, and the copper plating solution mainly comprises the following components: 190 g/L copper sulfate and 58 g/L sulfuric acid
The fifth step: after copper plating is finished, water is washed, and then zinc plating is carried out, and as zinc with a low melting point has an obvious effect on improving the discharge performance of the electrode wire, the cutting speed, and the processing precision and the finish degree of a cut surface can be improved; zinc sulfate is adopted for zinc plating at normal temperature, and the zinc plating solution comprises the following main components: zinc sulfate 450 g/l;
and a sixth step: after the galvanization is finished, water cleaning is carried out, and drying treatment is carried out after the cleaning is finished; the temperature of the oven is 100-200 ℃;
the seventh step: drawing the electrode wire into electrode wires with different specifications through a water tank after drying;
eighth step: internal stress exists in the electrode wire after drawing, internal stress elimination treatment is needed to improve the plasticity of the electrode wire properly, and the electrode wire is processed after the treatment; and (4) carrying out internal stress elimination through tempering treatment, wherein the tempering temperature is 200-650 ℃.
The invention has the beneficial effects that: the steel core wire is adopted to replace a brass wire electrode wire, so that the cost is low, the tensile strength is high, the wire is not easy to break, copper plating and zinc plating are carried out on the steel core, the electric conductivity is better than that of the brass wire, the cutting performance of the electrode wire is better, and the service life is longer; in order to ensure the tensile strength, the steel wire can be one of high, medium and low carbon steel wires; the steel wire is firstly preplated before copper plating so as to ensure the binding force of sulfate copper plating and ensure that the binding force of copper and the steel wire is better; the sulfate copper plating is adopted because the sulfate copper plating process is simple, the current efficiency is high, the deposition speed is high, the cost is low, and a thicker copper plating layer can be obtained; by plating zinc after copper plating, the discharge performance of the electrode wire is improved, the cutting speed of the electrode wire is improved, the machining precision and the smoothness of the cutting surface are improved, the hardness of zinc is lower than that of brass, and the abrasion of parts such as a guide wire and the like in cutting equipment can be reduced; the wire electrode can be drawn into wire electrodes with different specifications by drawing through a water tank, and the outer diameter tolerance and the finish of the wire electrode can be ensured by utilizing the precision, the finish and the lubricating property of a wire drawing die; compared with the common brass electrode wire, the electric conductivity of the steel core plated with copper and then galvanized is better.
The scope of protection of the invention is not limited to the above embodiments and variations thereof. The present invention is not limited to the above embodiments, but may be modified in various ways.
Claims (9)
1. A production process of a steel core wire electrode wire plated with copper and then galvanized is characterized by comprising the following steps:
the first step is as follows: carrying out surface pretreatment on the steel wire subjected to heat treatment;
the second step is that: after the surface pretreatment is finished, water washing is carried out to clean the residues of the previous working procedure;
the third step: after cleaning, pyrophosphate is adopted for pre-plating, so as to ensure the binding force of sulfate copper plating;
the fourth step: after the pre-plating is finished, water washing is carried out, copper plating is carried out, the sulfate copper plating process is simple, the current efficiency is high, the cost is low, and a thicker copper plating layer can be obtained;
the fifth step: after copper plating is finished, water is washed, and then zinc plating is carried out, and as zinc with a low melting point has an obvious effect on improving the discharge performance of the electrode wire, the cutting speed, and the processing precision and the finish degree of a cut surface can be improved;
and a sixth step: water cleaning is carried out after the galvanization is finished, drying treatment is carried out after the cleaning is finished,
the seventh step: drawing the electrode wire into electrode wires with different specifications through a water tank after drying;
eighth step: the wire electrode has internal stress after being drawn, the internal stress is eliminated in order to properly improve the plasticity of the wire electrode, and the wire electrode is processed after the treatment.
2. The steel cored wire electrode production process plated with copper and then galvanized according to claim 1, wherein the steel cored wire electrode production process comprises the following steps: the steel wire is any one of high-carbon, medium-carbon and low-carbon steel wires.
3. The steel cored wire electrode production process plated with copper and then galvanized according to claim 1, wherein the steel cored wire electrode production process comprises the following steps: the surface pretreatment is to remove an oxide layer on the surface of the steel wire subjected to heat treatment and a phosphating film on the steel wire subjected to phosphating treatment, and the surface pretreatment mainly adopts sulfuric acid with the proportion of 100-300 g/L and is carried out at normal temperature.
4. The steel cored wire electrode production process plated with copper and then galvanized according to claim 1, wherein the steel cored wire electrode production process comprises the following steps: the preplating step adopts pyrophosphate copper plating, and comprises the following main components: 25-70 g/L copper pyrophosphate, 250-350 g/L potassium pyrophosphate, 15-65 ℃ temperature and 8.5-9.0 PH value.
5. The steel cored wire electrode production process plated with copper and then galvanized according to claim 1, wherein the steel cored wire electrode production process comprises the following steps: the electrode wire needs to ensure certain conductivity and certain copper plating thickness, and sulfate copper plating can ensure the conductivity of the electrode wire; the copper plating adopts sulfate copper plating at the temperature of 10-40 ℃, and comprises the following main components: 180-220 g/L of copper sulfate and 50-70 g/L of sulfuric acid.
6. The steel cored wire electrode production process plated with copper and then galvanized according to claim 1, wherein the steel cored wire electrode production process comprises the following steps: the zinc has lower hardness than brass, so that the loss of a guide wire part in the equipment can be reduced during cutting; the zinc plating adopts zinc sulfate to perform zinc plating at normal temperature, and the zinc plating comprises the following main components: 300-600 g/l of zinc sulfate.
7. The steel cored wire electrode production process plated with copper and then galvanized according to claim 1, wherein the steel cored wire electrode production process comprises the following steps: when residual moisture on the galvanized wire electrode is dried, the wire electrode is placed into an oven to be dried, and the temperature of the oven is 100-200 ℃ in order to ensure the product quality.
8. The steel cored wire electrode production process plated with copper and then galvanized according to claim 1, wherein the steel cored wire electrode production process comprises the following steps: the electrode wire is subjected to tempering treatment for eliminating the internal stress, and the tempering temperature is 200-650 ℃.
9. The wire electrode produced by the wire electrode production process of steel core wire copper plating and zinc plating according to any one of claims 1 to 8, wherein the wire electrode is characterized in that: the electrode wire comprises a steel wire layer (1), a copper-plated layer (2) and a zinc-plated layer (3) from inside to outside in sequence.
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| CN113500252A (en) * | 2021-07-20 | 2021-10-15 | 江苏聚成金刚石科技有限公司 | Method for reducing wire breakage rate of fine-diameter diamond wire |
| CN114345976A (en) * | 2021-12-30 | 2022-04-15 | 镇江原轼新型材料有限公司 | Novel preparation process capable of improving heat conductivity and electric conductivity of wire saw |
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