CN113369826A - Production process of copper pipe for pier mouth - Google Patents
Production process of copper pipe for pier mouth Download PDFInfo
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- CN113369826A CN113369826A CN202110738838.0A CN202110738838A CN113369826A CN 113369826 A CN113369826 A CN 113369826A CN 202110738838 A CN202110738838 A CN 202110738838A CN 113369826 A CN113369826 A CN 113369826A
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- 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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Abstract
The invention relates to a production process of a copper pipe for a pier mouth, which comprises the following steps: step S1: and (3) melting the blank: smelting the cathode copper blank into a metal solution, and introducing the metal solution into a horizontal continuous casting machine; in the process, P is added into the metal solution, the weight content of Cu is controlled to be 99.95 percent, and the weight content of P is controlled to be 0.025-0.030 percent; step S2: horizontal continuous casting; step S3: milling a surface; step S4: rolling by three rollers; step S5: continuously pulling; step S6: pulling the disc; step S7: cleaning and finishing; step S8: and (4) annealing the finished product, namely annealing the coiled material with the weight specified by the customer through an annealing furnace at 550-570 ℃ at a beat of 45-55min to wait for the product which accords with the post-processing of the customer. The subsequent processing performance of the copper pipe is improved, the radial elongation of the copper pipe is improved, and the problem that the diameter increment is insufficient when the pier mouth of the copper pipe is processed is solved.
Description
Technical Field
The invention relates to the technical field of copper pipe processing, in particular to a production process of a copper pipe for a pier mouth.
Background
The copper pipe is also called a copper pipe, which is one of nonferrous metal pipes, and is a pressed and drawn seamless pipe. The copper pipe has the characteristics of good electrical conductivity and thermal conductivity, and the main materials of the conductive fittings and the heat dissipation fittings of electronic products are the first choice for modern contractors to install tap water pipelines, heat supply pipelines and refrigeration pipelines in all residential commodity rooms. The copper pipe has strong corrosion resistance, is not easy to oxidize, does not easily react with some liquid substances, and is easy to be manufactured by bright bending.
In the prior art, the problem of insufficient diameter increment during processing of a copper pipe at a pier opening is solved, and researches show that the reason for insufficient diameter increment during processing of the pier opening mainly is that the fluidity of the copper pipe needs to be improved, and the reason is that the elongation of the copper pipe is low. As is known, the processing performance of a metal material is closely related to the annealing process of a finished product thereof, the traditional annealing process of the finished product of the copper pipe comprises 520 ℃/32min, 530 ℃/32min, 540 ℃/32min, 550 ℃/32min and the like, the elongation of the copper pipe produced by adopting the four processes is 46-48%, the grain size is 0.23-0.25 mm, and the yield of a copper pipe pier mouth is only 50%. However, the elongation of good products is not less than 49%, the grain size range is 0.28-0.30 mm, and the comparison still has obvious difference.
On the basis of the prior art, the annealing is carried out by simply increasing the temperature, but the effect of the copper tube pier mouth is not improved, but the adverse phenomena of coarse grain size and rough surface occur, and the subsequent processing quality of the copper tube is seriously influenced. Simply prolonging the annealing time will affect the production efficiency and increase the production cost of the unit, so a reasonable and practical annealing process is urgently needed.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a production process of a copper pipe for a pier nose, which improves the subsequent processing performance of the copper pipe, improves the radial elongation of the copper pipe and solves the problem of insufficient diameter increment when the pier nose is processed on the copper pipe.
The above object of the present invention is achieved by the following technical solutions:
a production process of a copper pipe for a pier mouth comprises the following steps:
step S1: and (3) melting the blank: smelting the cathode copper blank into a metal solution, and introducing the metal solution into a horizontal continuous casting machine;
in the process, P is added into the metal solution, the weight content of Cu is controlled to be 99.95 percent, and the weight content of P is controlled to be 0.025-0.030 percent;
step S2: horizontal continuous casting, in which the metal solution is cast into a hollow casting blank by a horizontal continuous casting machine, and the size of the casting blank is set as
Step S3: milling the surface of the hollow casting blank by adopting annular surface milling equipment to remove casting defects on the surface of the hollow casting blank;
step S4: rolling the milled hollow casting blank by three rollers to change the wall thickness and the outer diameter to obtain the hollow casting blank with the specification of
The thick pipe of (2);
step S5: continuously pulling the specification to
The thick tube is continuously drawn to the specification of
The medium-sized pipe of (1);
step S6: coiling, adopting copper pipe coiling equipment to coil the specification into
The medium-sized pipe is drawn into a required finished product, and the specification of the finished product is
Step S7: cleaning and finishing to obtain the final product
Cleaning, rounding and online flaw detection are carried out on the copper pipe until a coil stock with the weight specified by a customer is formed;
step S8: and (4) annealing the finished product, namely annealing the coiled material with the weight specified by the customer through an annealing furnace at 550-570 ℃ in a beat 45-55min to wait for the product which accords with the post-processing of the customer.
The present invention in a preferred example may be further configured to: in the step S1, the weight content of P is controlled to be 0.0275%.
The present invention in a preferred example may be further configured to: in the step S8, the temperature of the annealing furnace is set to 560 ℃.
The present invention in a preferred example may be further configured to: in the step S8, the tact time of annealing is set to 50 min.
The present invention in a preferred example may be further configured to: in step S8, the final annealing process uses a gas cushion furnace to perform heat treatment annealing on the product.
The present invention in a preferred example may be further configured to: in the step S3, a flaw detector is further installed at the front end of the annular surface milling device to realize online flaw detection so as to remove casting flaws on the surface of the hollow casting blank.
The present invention in a preferred example may be further configured to: in the step S7, the cleaning speed is 60-70 m/min, and the grinding brush current is 0.6-1.3A.
The present invention in a preferred example may be further configured to: in step S7, a numerical control rounding machine is used to round the copper tube.
In summary, the invention includes at least one of the following beneficial technical effects:
1. the invention uses the annealing temperature of 560 ℃ which is similar to the specification annealing temperature of 520 ℃ and 540 ℃ before, but the high temperature is not excessively increased, and the excessive energy waste can not be generated. The annealing time of the process is 50min, compared with the annealing time of 32min in the prior similar specification, the annealing time is increased by 18 min, and the production efficiency is not obviously influenced. The yield of the copper pipe pier mouth produced by the method reaches 98.3 percent, and the yield of the copper pipe pier mouth produced by the prior process is only 50 percent. The subsequent processing performance of the copper pipe is improved, the radial elongation of the copper pipe is improved, and the problem that the diameter increment is insufficient when the copper pipe is processed at a pier opening is effectively solved.
2. According to the invention, the elongation of the finished product of the copper pipe is improved by a reasonable annealing process, and the grain size is not obviously large, for example, the annealing time of the copper pipe is prolonged under the condition of not obviously improving the annealing temperature, so that the grain size of the copper pipe is uniform enough, and the quality of subsequent processing of the copper pipe is effectively ensured.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The first embodiment is as follows:
referring to fig. 1, the invention discloses a production process of a copper pipe for a pier mouth, which comprises the following steps:
step S1: and (3) melting the blank: smelting the cathode copper blank into a metal solution, and introducing the metal solution into a horizontal continuous casting machine;
in the process, P is added into the metal solution, the weight content of Cu is controlled to be 99.95 percent, and the weight content of P is controlled to be 0.025-0.030 percent;
step S2: horizontal continuous casting, in which the metal solution is cast into a hollow casting blank by a horizontal continuous casting machine, and the size of the casting blank is set as
Step S3: milling a surface, wherein the hollow casting blank is milled by adopting annular surface milling equipment so as to remove casting defects on the surface of the hollow casting blank;
step S4: rolling by three rollers, namely rolling the milled hollow casting blank to change the wall thickness and the outer diameter to obtain the product with the specification of
The thick pipe of (2);
step S5: continuously pulling the specification to
The thick tube is continuously drawn to the specification of
The medium-sized pipe of (1);
step S6: coiling, adopting copper pipe coiling equipment to coil the specification into
The medium-sized pipe is drawn into a required finished product, and the specification of the finished product is
Step S7: cleaning and finishing to obtain the final product
Cleaning, rounding and online flaw detection are carried out on the copper pipe until a coil stock with the weight specified by a customer is formed;
step S8: and (4) annealing the finished product, namely annealing the coiled material with the weight specified by the customer through an annealing furnace at 550-570 ℃ in a beat 45-55min to wait for the product which accords with the post-processing of the customer.
Wherein, in step S1, the weight content of P is controlled to be 0.0275%. In step S3, a flaw detector is further installed at the front end of the annular surface milling device to perform online flaw detection to remove casting flaws on the surface of the hollow casting blank. In step S7, the copper pipe was subjected to a rounding treatment by a numerical control rounding machine at a cleaning speed of 65 m/min and a brush current of 0.95A. Further, in step S8, the temperature of the annealing furnace is set to 560 ℃, the annealing cycle is set to 50min, and the finished product annealing process adopts an air cushion furnace to perform heat treatment annealing on the product.
Example two:
referring to fig. 1, the invention discloses a production process of a copper pipe for a pier mouth, which comprises the following steps:
step S1: and (3) melting the blank: smelting the cathode copper blank into a metal solution, and introducing the metal solution into a horizontal continuous casting machine;
in the process, P is added into the metal solution, the weight content of Cu is controlled to be 99.95 percent, and the weight content of P is controlled to be 0.025-0.030 percent;
step S2: horizontal continuous casting, in which the metal solution is cast into a hollow casting blank by a horizontal continuous casting machine, and the size of the casting blank is set as
Step S3: milling a surface, wherein the hollow casting blank is milled by adopting annular surface milling equipment so as to remove casting defects on the surface of the hollow casting blank;
step S4: rolling by three rollers, namely rolling the milled hollow casting blank to change the wall thickness and the outer diameter to obtain the product with the specification of
The thick pipe of (2);
step S5: continuously pulling the specification to
The thick tube is continuously drawn to the specification of
The medium-sized pipe of (1);
step S6: coiling, adopting copper pipe coiling equipment to coil the specification into
The medium-sized pipe is drawn into a required finished product, and the specification of the finished product is
Step S7: cleaning and finishing to obtain the final product
Cleaning, rounding and online flaw detection are carried out on the copper pipe until a coil stock with the weight specified by a customer is formed;
step S8: and (4) annealing the finished product, namely annealing the coiled material with the weight specified by the customer through an annealing furnace at 550-570 ℃ in a beat 45-55min to wait for the product which accords with the post-processing of the customer.
In step S1, the content of P is controlled to be 0.025% by weight. In step S3, a flaw detector is further installed at the front end of the annular surface milling device to perform online flaw detection to remove casting flaws on the surface of the hollow casting blank. In step S7, the copper pipe is subjected to a rounding treatment by a numerical control rounding machine at a cleaning speed of 60 m/min and a grinding brush current of 0.6A. Further, in step S8, the temperature of the annealing furnace is set to 550 ℃, the annealing cycle is set to 45min, and the finished product annealing process adopts an air cushion furnace to perform heat treatment annealing on the product.
Example three:
referring to fig. 1, the invention discloses a production process of a copper pipe for a pier mouth, which comprises the following steps:
step S1: and (3) melting the blank: smelting the cathode copper blank into a metal solution, and introducing the metal solution into a horizontal continuous casting machine;
in the process, P is added into the metal solution, the weight content of Cu is controlled to be 99.95 percent, and the weight content of P is controlled to be 0.025-0.030 percent;
step S2: horizontal continuous casting, in which the metal solution is cast into a hollow casting blank by a horizontal continuous casting machine, and the size of the casting blank is set as
Step S3: milling a surface, wherein the hollow casting blank is milled by adopting annular surface milling equipment so as to remove casting defects on the surface of the hollow casting blank;
step S4: rolling by three rollers, namely rolling the milled hollow casting blank to change the wall thickness and the outer diameter to obtain the product with the specification of
The thick pipe of (2);
step S5: continuously pulling the specification to
The thick tube is continuously drawn to the specification of
The medium-sized pipe of (1);
step S6: coiling, adopting copper pipe coiling equipment to coil the specification into
The medium-sized pipe is drawn into a required finished product, and the specification of the finished product is
Step S7: cleaning and finishing to obtain the final product
Cleaning, rounding and online flaw detection are carried out on the copper pipe until a coil stock with the weight specified by a customer is formed;
step S8: and (4) annealing the finished product, namely annealing the coiled material with the weight specified by the customer through an annealing furnace at 550-570 ℃ in a beat 45-55min to wait for the product which accords with the post-processing of the customer.
In step S1, the weight content of P is controlled to be 0.030%. In step S3, a flaw detector is further installed at the front end of the annular surface milling device to perform online flaw detection to remove casting flaws on the surface of the hollow casting blank. In step S7, the copper pipe is subjected to a rounding treatment by a numerical control rounding machine at a cleaning speed of 70 m/min and a grinding brush current of 1.3A. Further, in step S8, the temperature of the annealing furnace is set to 570 ℃, the annealing cycle is set to 55min, and the finished product annealing process adopts an air cushion furnace to perform heat treatment annealing on the product.
Referring to the above table, through experimental research, it was found that adding P according to the design requirement after melting the cathode copper blank into the copper liquid, controlling the weight content of Cu to be 99.95%, the weight content of P to be 0.025-0.030%, and using the annealing temperature of 560 ℃, the previous similar specification annealing temperature of 520-. The annealing time of the process is 50min, compared with the annealing time of 32min in the prior similar specification, the annealing time is increased by 18 min, and the production efficiency is not obviously influenced. The yield of the copper pipe pier mouth produced by the method reaches 98.3 percent, and the yield of the copper pipe pier mouth produced by the prior process is only 50 percent. The subsequent processing performance of the copper pipe is improved, the radial elongation of the copper pipe is improved, and the problem that the diameter increment is insufficient when the copper pipe is processed at a pier opening is effectively solved.
According to the invention, the elongation of the finished product of the copper pipe is improved by a reasonable annealing process, and the grain size is not obviously large, for example, the annealing time of the copper pipe is prolonged under the condition of not obviously improving the annealing temperature, so that the grain size of the copper pipe is uniform enough, and the quality of subsequent processing of the copper pipe is effectively ensured.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (8)
1. A production process of a copper pipe for a pier nose is characterized by comprising the following steps: the method comprises the following steps:
step S1: and (3) melting the blank: smelting the cathode copper blank into a metal solution, and introducing the metal solution into a horizontal continuous casting machine;
in the process, P is added into the metal solution, the weight content of Cu is controlled to be 99.95 percent, and the weight content of P is controlled to be 0.025-0.030 percent;
step S2: horizontal continuous casting, in which the metal solution is cast into a hollow casting blank by a horizontal continuous casting machine, and the size of the casting blank is set as
Step S3: milling the surface of the hollow casting blank by adopting annular surface milling equipment to remove casting defects on the surface of the hollow casting blank;
step S4: rolling the milled hollow casting blank by three rollers to change the wall thickness and the outer diameter to obtain the hollow casting blank with the specification of
The thick pipe of (2);
step S5: continuously pulling the specification to
The thick tube is continuously drawn to the specification of
The medium-sized pipe of (1);
step S6: coiling, adopting copper pipe coiling equipment to coil the specification into
The medium-sized pipe is drawn into a required finished product, and the specification of the finished product is
Step S7: cleaning and finishing to obtain the final product
Cleaning, rounding and online flaw detection are carried out on the copper pipe until a coil stock with the weight specified by a customer is formed;
step S8: and (4) annealing the finished product, namely annealing the coiled material with the weight specified by the customer through an annealing furnace at 550-570 ℃ in a beat 45-55min to wait for the product which accords with the post-processing of the customer.
2. The production process of the copper pipe for the pier mouth according to claim 1, wherein the production process comprises the following steps: in the step S1, the weight content of P is controlled to be 0.0275%.
3. The production process of the copper pipe for the pier mouth according to claim 1, wherein the production process comprises the following steps: in the step S8, the temperature of the annealing furnace is set to 560 ℃.
4. The production process of the copper pipe for the pier mouth according to claim 1, wherein the production process comprises the following steps: in the step S8, the tact time of annealing is set to 50 min.
5. The production process of the copper pipe for the pier mouth according to claim 1, wherein the production process comprises the following steps: in step S8, the final annealing process uses a gas cushion furnace to perform heat treatment annealing on the product.
6. The production process of the copper pipe for the pier mouth according to claim 1, wherein the production process comprises the following steps: in the step S3, a flaw detector is further installed at the front end of the annular surface milling device to realize online flaw detection so as to remove casting flaws on the surface of the hollow casting blank.
7. The production process of the copper pipe for the pier mouth according to claim 1, wherein the production process comprises the following steps: in the step S7, the cleaning speed is 60-70 m/min, and the grinding brush current is 0.6-1.3A.
8. The production process of the copper pipe for the pier mouth according to claim 1, wherein the production process comprises the following steps: in step S7, a numerical control rounding machine is used to round the copper tube.
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| CN202110738838.0A CN113369826A (en) | 2021-06-30 | 2021-06-30 | Production process of copper pipe for pier mouth |
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| CN202110738838.0A CN113369826A (en) | 2021-06-30 | 2021-06-30 | Production process of copper pipe for pier mouth |
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| JP2014001418A (en) * | 2012-06-18 | 2014-01-09 | Sumitomo Light Metal Ind Ltd | Annealing method of level wound coil |
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| CN109402424A (en) * | 2018-12-06 | 2019-03-01 | 江苏隆达超合金航材有限公司 | Copper and the high temperature alloy plug of copper alloy and preparation method thereof are rolled applied to planetary rolling |
| CN110814069A (en) * | 2019-11-18 | 2020-02-21 | 龙口市龙蓬精密铜管有限公司 | Production method of semi-hard copper straight pipe and drawing die thereof |
| CN112251616A (en) * | 2020-10-23 | 2021-01-22 | 江西金叶大铜科技有限公司 | Process method for producing red copper pipe by refining, continuous casting, continuous rolling and stretching waste copper |
-
2021
- 2021-06-30 CN CN202110738838.0A patent/CN113369826A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11204247A (en) * | 1989-02-08 | 1999-07-30 | Asaba:Kk | High-frequency heating coil for horizontal continuous casting |
| CN101058142A (en) * | 2007-05-29 | 2007-10-24 | 江阴新华宏铜业有限公司 | Method for preparing copper and nickel alloy seamless copper tube |
| CN101698207A (en) * | 2009-10-20 | 2010-04-28 | 无锡隆达金属材料有限公司 | Method for producing copper alloy coil pipe |
| JP2014001418A (en) * | 2012-06-18 | 2014-01-09 | Sumitomo Light Metal Ind Ltd | Annealing method of level wound coil |
| CN104723023A (en) * | 2013-12-20 | 2015-06-24 | 青岛蓝图文化传播有限公司市南分公司 | Machining process of copper pipe for ultrathin-walled air conditioner |
| CN103866157A (en) * | 2014-03-11 | 2014-06-18 | 宁波金田铜管有限公司 | High-strength corrosion-resistant micro-alloying copper pipe and manufacturing method thereof |
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| CN112251616A (en) * | 2020-10-23 | 2021-01-22 | 江西金叶大铜科技有限公司 | Process method for producing red copper pipe by refining, continuous casting, continuous rolling and stretching waste copper |
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Application publication date: 20210910 |