CN111036882A - Method for processing special-shaped copper bar - Google Patents
Method for processing special-shaped copper bar Download PDFInfo
- Publication number
- CN111036882A CN111036882A CN201911300823.5A CN201911300823A CN111036882A CN 111036882 A CN111036882 A CN 111036882A CN 201911300823 A CN201911300823 A CN 201911300823A CN 111036882 A CN111036882 A CN 111036882A
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- China
- Prior art keywords
- copper bar
- special
- shaped copper
- phosphating
- saponification
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- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/02—Pressure casting making use of mechanical pressure devices, e.g. cast-forging
-
- 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
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/07—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing phosphates
- C23C22/08—Orthophosphates
- C23C22/12—Orthophosphates containing zinc cations
- C23C22/17—Orthophosphates containing zinc cations containing also organic acids
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/82—After-treatment
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/10—Other heavy metals
- C23G1/103—Other heavy metals copper or alloys of copper
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- ing And Chemical Polishing (AREA)
Abstract
The invention discloses a method for processing a special-shaped copper bar, which is processed by smelting, ingot casting, extrusion, low-temperature annealing, drawing, acid washing, phosphating and saponification; the special-shaped copper bar has the advantages that the toughness of the special-shaped copper bar after production and molding is enhanced, the elongation is improved, the heat conduction and the heat dissipation performance of the special-shaped copper bar are effectively improved through low-temperature annealing, and the use effect is ensured; the acid washing, phosphating and saponification treatments of the invention effectively improve the lubricating condition of the special-shaped copper bar, greatly reduce the friction coefficient and prolong the service life of the special-shaped copper bar.
Description
Technical Field
The invention relates to a method for processing a special-shaped copper bar, and belongs to the technical field of copper bar manufacturing.
Background
Compared with the common copper bar, the special-shaped copper bar has various shapes, including L-shaped, T-shaped, trapezoidal and polygonal shapes, and has a cross section which is not square or rectangular, and is different according to the design requirements of specific products of manufacturers; traditional abnormal shape copper bar is in process of production, and the copper bar of production is soft partially, and is easy to split when using on the filament cutter, even can use but the result of use not good reluctantly.
At present, the special-shaped copper bar is mainly manufactured by a machining method in China, however, the special-shaped copper bar in the outer circle is manufactured by machining, the machining difficulty is high, the yield and the production efficiency are low, the material consumption is high, the cost is high, the material deformation is extremely uneven in the machining process, the technical problems of the production process, the design and the like have high requirements, but the technical problems are blank in China, and technicians in the field are also eagerly seeking a better manufacturing and distribution to meet the requirements of the current market.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a method for processing a special-shaped copper bar, so as to solve the problems of reducing the cost, improving the productivity, reducing the cutting amount of parts, and the like.
In order to achieve the purpose, the invention adopts the following technical scheme:
the processing method of the special-shaped copper bar comprises the following steps:
(1) smelting: smelting a copper raw material metal block for 3-5 hours by a medium frequency induction furnace to form molten steel, and controlling the smelting temperature to 1150-1330 ℃;
(2) casting ingot and extruding: pouring the molten steel in the step (1) into a continuous extruder for molding, and adding a die hole by adopting a balance force die hole during extrusion to enable metals on two sides of the section to flow out of the balance die hole, thereby obtaining a molded part;
(3) low-temperature annealing: placing the copper bar after cold drawing into an annealing furnace, slowly heating to 250-300 ℃, controlling the heating rate to 15-20 ℃/min, preserving heat for 2.0-2.5 hours, slowly heating to 680-750 ℃, controlling the heating rate to 25-30 ℃/min, preserving heat for 40-50 minutes, and slowly cooling to room temperature;
(4) drawing: according to the required dimensional tolerance of the finished product, designing an external mold and an internal mold of the drawing mold to ensure that the size and the quality of the drawn special-shaped copper bar reach the standard;
(5) acid washing, phosphating and saponification: and (4) sequentially carrying out acid washing, phosphating and saponification treatment on the special-shaped copper bar drawn in the step (4).
The smelting temperature in the step (1) is 1250-1300 ℃.
The copper bar is put into an annealing furnace to be slowly heated to 300 ℃, the heating rate is controlled to be 15 ℃/min, the heat preservation time is 2.0 hours, then the copper bar is slowly heated to 720 ℃, the heating rate is controlled to be 30 ℃/min, and the heat preservation time is 45 minutes.
The acid washing is carried out for 10 to 30 minutes by adopting 10 to 12 percent dilute hydrochloric acid solution; and then washing the special-shaped copper bar with water.
The phosphating treatment is to soak the special-shaped copper bar in phosphating solution for 25-30 minutes, wherein the phosphating solution consists of the following components in concentration: 20-50g/L of zinc dihydrogen phosphate, 80-100g/L of phosphoric acid, 50-60g/L of sodium dihydrogen phosphate and 60-80 g/L of tartaric acid.
The saponification treatment is to soak the phosphated special-shaped copper bar in saponification liquid for 20-30 minutes, wherein the saponification liquid is composed of the following raw materials: 8-10 parts of petroleum sodium sulfonate, 6-8 parts of triethanolamine, 5-8 parts of oleic acid, 1-2 parts of fatty acid alcohol ester, 0.5-1 part of benzotriazole and 30-40 parts of base oil.
The invention has the beneficial effects that:
the invention adopts smelting, ingot casting, extrusion, low-temperature annealing, drawing, acid washing, phosphating and saponification; the toughness of the shaped copper bar after production and molding is enhanced, the elongation is improved, the heat conduction and the heat dissipation performance of the shaped copper bar are effectively improved through low-temperature annealing, and the use effect of the shaped copper bar is ensured; the acid washing, phosphating and saponification treatments of the invention effectively improve the lubricating condition of the special-shaped copper bar, greatly reduce the friction coefficient and prolong the service life of the special-shaped copper bar.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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.
Example 1: the processing method of the special-shaped copper bar comprises the following steps:
(1) smelting: smelting a copper raw material metal block for 3 hours by a medium frequency induction furnace to form molten steel, and controlling the smelting temperature to 1150 ℃;
(2) casting ingot and extruding: pouring the molten steel in the step (1) into a continuous extruder for molding, and adding a die hole by adopting a balance force die hole during extrusion to enable metals on two sides of the section to flow out of the balance die hole, thereby obtaining a molded part;
(3) low-temperature annealing: placing the copper bar subjected to cold drawing into an annealing furnace, slowly heating to 250 ℃, controlling the heating rate to be 15 ℃/min, preserving heat for 2.0 hours, then slowly heating to 680 ℃, controlling the heating rate to be 25 ℃/min, preserving heat for 40 minutes, and slowly cooling to room temperature;
(4) drawing: according to the required dimensional tolerance of the finished product, designing an external mold and an internal mold of the drawing mold to ensure that the size and the quality of the drawn special-shaped copper bar reach the standard;
(5) acid washing, phosphating and saponification: and (4) sequentially carrying out acid washing, phosphating and saponification treatment on the special-shaped copper bar drawn in the step (4).
Acid washing is carried out for 20 minutes by adopting 10 percent dilute hydrochloric acid solution; then washing the special-shaped copper bar with water; the phosphating treatment is to soak the special-shaped copper bar in phosphating solution for 25 minutes, and the phosphating solution consists of the following components in concentration: 35g/L zinc dihydrogen phosphate, 90g/L phosphoric acid, 55g/L sodium dihydrogen phosphate and 70/L tartaric acid; the saponification treatment is to soak the phosphatized special-shaped copper bar in saponification liquid for 25 minutes, wherein the saponification liquid is composed of the following raw materials: 10 parts of petroleum sodium sulfonate, 7 parts of triethanolamine, 6 parts of oleic acid, 1.5 parts of fatty acid alcohol ester, 0.8 part of benzotriazole and 35 parts of base oil.
Example 2: the processing method of the special-shaped copper bar comprises the following steps:
(1) smelting: smelting a copper raw material metal block for 4 hours by a medium-frequency induction furnace to form molten steel, and controlling the smelting temperature to 1250 ℃;
(2) casting ingot and extruding: pouring the molten steel in the step (1) into a continuous extruder for molding, and adding a die hole by adopting a balance force die hole during extrusion to enable metals on two sides of the section to flow out of the balance die hole, thereby obtaining a molded part;
(3) low-temperature annealing: placing the copper bar subjected to cold drawing into an annealing furnace, slowly heating to 280 ℃, controlling the heating rate to be 18 ℃/min, preserving heat for 2.5 hours, then slowly heating to 720 ℃, controlling the heating rate to be 28 ℃/min, preserving heat for 45 minutes, and slowly cooling to room temperature;
(4) drawing: according to the required dimensional tolerance of the finished product, designing an external mold and an internal mold of the drawing mold to ensure that the size and the quality of the drawn special-shaped copper bar reach the standard;
(5) acid washing, phosphating and saponification: and (4) sequentially carrying out acid washing, phosphating and saponification treatment on the special-shaped copper bar drawn in the step (4).
The acid washing, phosphating and saponification processes were as in example 1.
Example 3: the processing method of the special-shaped copper bar comprises the following steps:
(1) smelting: smelting a copper raw material metal block for 5 hours by a medium frequency induction furnace to form molten steel, and controlling the smelting temperature to 1330 ℃;
(2) casting ingot and extruding: pouring the molten steel in the step (1) into a continuous extruder for molding, and adding a die hole by adopting a balance force die hole during extrusion to enable metals on two sides of the section to flow out of the balance die hole, thereby obtaining a molded part;
(3) low-temperature annealing: placing the copper bar after cold drawing into an annealing furnace, slowly heating to 300 ℃, controlling the heating rate to be 20 ℃/min, preserving heat for 2.5 hours, then slowly heating to 750 ℃, controlling the heating rate to be 30 ℃/min, preserving heat for 50 minutes, and slowly cooling to room temperature;
(4) drawing: according to the required dimensional tolerance of the finished product, designing an external mold and an internal mold of the drawing mold to ensure that the size and the quality of the drawn special-shaped copper bar reach the standard;
(5) acid washing, phosphating and saponification: and (4) sequentially carrying out acid washing, phosphating and saponification treatment on the special-shaped copper bar drawn in the step (4).
The acid washing, phosphating and saponification processes were as in example 1.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The processing method of the special-shaped copper bar is characterized by comprising the following steps:
(1) smelting: smelting a copper raw material metal block for 3-5 hours by a medium frequency induction furnace to form molten steel, and controlling the smelting temperature to 1150-1330 ℃;
(2) casting ingot and extruding: pouring the molten steel in the step (1) into a continuous extruder for molding, and adding a die hole by adopting a balance force die hole during extrusion to enable metals on two sides of the section to flow out of the balance die hole, thereby obtaining a molded part;
(3) low-temperature annealing: placing the copper bar after cold drawing into an annealing furnace, slowly heating to 250-300 ℃, controlling the heating rate to 15-20 ℃/min, preserving heat for 2.0-2.5 hours, slowly heating to 680-750 ℃, controlling the heating rate to 25-30 ℃/min, preserving heat for 40-50 minutes, and slowly cooling to room temperature;
(4) drawing: according to the required dimensional tolerance of the finished product, designing an external mold and an internal mold of the drawing mold to ensure that the size and the quality of the drawn special-shaped copper bar reach the standard;
(5) acid washing, phosphating and saponification: and (4) sequentially carrying out acid washing, phosphating and saponification treatment on the special-shaped copper bar drawn in the step (4).
2. The processing method of the special-shaped copper bars as claimed in claim 1, wherein the smelting temperature in the step (1) is 1250-1300 ℃.
3. The processing method of the special-shaped copper bar as claimed in claim 1, wherein the copper bar is placed into an annealing furnace to be slowly heated to 300 ℃, the heating rate is controlled to be 15 ℃/min, the temperature is kept for 2.0 hours, then the copper bar is slowly heated to 720 ℃, the heating rate is controlled to be 30 ℃/min, and the temperature is kept for 45 minutes.
4. The processing method of the special-shaped copper bar as claimed in claim 1, wherein the acid washing is carried out for 10-30 minutes by using 10% -12% diluted hydrochloric acid solution; and then washing the special-shaped copper bar with water.
5. The processing method of the special-shaped copper bar as claimed in claim 1, wherein the phosphating treatment is to soak the special-shaped copper bar in a phosphating solution for 25-30 minutes, and the phosphating solution comprises the following components in concentration: 20-50g/L of zinc dihydrogen phosphate, 80-100g/L of phosphoric acid, 50-60g/L of sodium dihydrogen phosphate and 60-80 g/L of tartaric acid.
6. The processing method of the special-shaped copper bar as claimed in claim 1, wherein the saponification treatment comprises soaking the phosphated special-shaped copper bar in a saponification solution for 20-30 minutes, wherein the saponification solution comprises the following raw materials: 8-10 parts of petroleum sodium sulfonate, 6-8 parts of triethanolamine, 5-8 parts of oleic acid, 1-2 parts of fatty acid alcohol ester, 0.5-1 part of benzotriazole and 30-40 parts of base oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911300823.5A CN111036882A (en) | 2019-12-17 | 2019-12-17 | Method for processing special-shaped copper bar |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911300823.5A CN111036882A (en) | 2019-12-17 | 2019-12-17 | Method for processing special-shaped copper bar |
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| CN111036882A true CN111036882A (en) | 2020-04-21 |
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| CN201911300823.5A Pending CN111036882A (en) | 2019-12-17 | 2019-12-17 | Method for processing special-shaped copper bar |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113981270A (en) * | 2021-10-26 | 2022-01-28 | 江西云泰铜业有限公司 | Preparation method of high-temperature-resistant copper wire |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113981270A (en) * | 2021-10-26 | 2022-01-28 | 江西云泰铜业有限公司 | Preparation method of high-temperature-resistant copper wire |
| CN113981270B (en) * | 2021-10-26 | 2022-07-12 | 江西云泰铜业有限公司 | Preparation method of high-temperature-resistant copper wire |
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Application publication date: 20200421 |