CN110681755B - High-performance seamless copper pipe stretch forming processing method - Google Patents
High-performance seamless copper pipe stretch forming processing method Download PDFInfo
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- CN110681755B CN110681755B CN201911141208.4A CN201911141208A CN110681755B CN 110681755 B CN110681755 B CN 110681755B CN 201911141208 A CN201911141208 A CN 201911141208A CN 110681755 B CN110681755 B CN 110681755B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
- B21D22/208—Deep-drawing by heating the blank or deep-drawing associated with heat treatment
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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
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
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Abstract
The invention discloses a drawing forming processing method of a high-performance seamless copper pipe, which comprises the following specific process steps of S1, casting, melting a finished copper plate material into molten copper by using a high-temperature smelting furnace, S2, extruding, forming and cooling the molten copper into a copper pipe blank by using a pipe-shaped die, forming an oxidation layer on the outer surface of the pipe blank, carrying out oxidation scouring treatment on the oxidation surface of the pipe blank, S3, rolling, putting the copper pipe blank into a core head, pushing the core head into a four-roller planetary rolling mill for rolling, and preparing a half-layer copper pipe A, wherein the rolling speed is 45-50 r/min, and the feeding amount is 4500 + 4700 mm/time. Compared with the prior art, the invention has the beneficial effects that: compared with the conventional copper pipe, the copper pipe has the advantages of short process flow, high automation degree, simple and convenient operation, high hardness, high smoothness and high precision, and has low impurity content and low oxygen content, so that the qualification rate of the product is greatly improved, the waste of the production cost of an enterprise is avoided, and the copper pipe is beneficial to wide popularization and application.
Description
Technical Field
The invention relates to the technical field of copper pipe stretch forming processing, in particular to a high-performance seamless copper pipe stretch forming processing method.
Background
At present, a high-precision copper pipe is an important material for air-conditioning refrigeration equipment and cable communication equipment and is widely applied, and the equipment has high precision requirement on the copper pipe, so that the requirement on each procedure on a production line is also high in the process of manufacturing the high-precision copper pipe, but the common copper pipe has low performance in the manufacturing process, has high impurity content and cannot achieve high precision and high smoothness, so that the high-performance seamless copper pipe stretch forming processing method is provided.
Disclosure of Invention
The invention aims to provide a high-performance seamless copper pipe stretch forming processing method to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a high-performance seamless copper pipe stretch forming processing method comprises the following specific process steps:
s1, casting, namely melting the finished copper plate material into molten copper by using a high-temperature melting furnace;
s2, extruding, molding and cooling the molten copper through a tubular mold to form a copper pipe blank, forming an oxide layer on the outer surface of the pipe blank, and carrying out oxidation scouring treatment on the oxidized surface of the pipe blank;
s3, rolling, namely putting the copper tube blank into a core print, pushing the core print into a four-roller planetary rolling mill for rolling to prepare a half-layer copper tube A, wherein the rolling speed is 45-50 r/min, the feeding amount is 4500 plus 4700 mm/time, and in the rolling process, the feeding amount and the rolling speed are adjusted to ensure that the tube has no flash;
s4, putting the semi-layer copper tube A into an annealing furnace for annealing, wherein the annealing temperature is 450-600 ℃, the annealing time is 3-8 hours, and the cooling time is 4-12 hours, so as to obtain a semi-finished copper tube B;
s5, using a copper tube drawing machine, drawing the semi-finished copper tube B by using the drawing machine, wherein the first drawing force is 350-400KN, the drawing speed is 150-180m/min, preparing a semi-finished copper tube C, conveying the semi-finished copper tube C into drawing equipment for secondary drawing, the drawing speed is 1300-1500m/min, the drawing force is 15-20KN, drawing the copper tube into different diameters according to requirements, and preparing the copper tube A after drawing is completed;
s6, polishing the surface of the copper pipe A, detecting after polishing, polishing the inner cavity of the copper pipe A after surface polishing after qualified detection, and obtaining a copper pipe B after polishing;
s7, after the copper pipe B penetrates through the sawing device, straightening and sawing are carried out through the sawing device, and then burrs at the sawing end are removed to obtain a copper pipe C;
s8, the straightness of the finished product can be guaranteed by using a precision hydraulic drawing machine for the copper pipe C, the damage to the precision of the inner hole after the copper pipe C is straightened by using a straightening machine is avoided, the precision is high, and the stability is good;
s9, putting the copper pipe processed in the step S8 into cleaning equipment for cleaning treatment;
s10, drying the cleaned copper pipe;
s11, inspecting the dried product, and checking whether the product is qualified;
and S12, packaging the qualified copper tubes and warehousing.
Preferably, the time of the scouring treatment is 20 to 30 minutes.
Preferably, the drying treatment temperature is 90-110 ℃ and the time is 40-60 s.
Preferably, the rolling speed is 45 r/min, the feeding amount is 4500 mm/time, the annealing temperature is 400 ℃, the annealing time is 3 hours, the cooling time is 4 hours, the first stretching force is 350KN, the stretching speed is 150m/min, the second stretching speed is 1300m/min, and the stretching force is 15 KN.
Preferably, the rolling speed is 48 r/min, the feeding amount is 4600 mm/time, the annealing temperature is 500 ℃, the annealing time is 5 hours, the cooling time is 8 hours, the first stretching force is 380KN, the stretching speed is 160m/min, the second stretching speed is 1400m/min, and the stretching force is 18 KN.
Preferably, the rolling speed is 50 r/min, the feeding amount is 4700 mm/time, the annealing temperature is 600 ℃, the annealing time is 8 hours, the cooling time is 12 hours, the first stretching force is 400KN, the stretching speed is 180m/min, the second stretching speed is 1500m/min, and the stretching force is 20 KN.
Compared with the prior art, the invention has the beneficial effects that: compared with the conventional copper pipe, the copper pipe has the advantages of short process flow, high automation degree, simple and convenient operation, high hardness, high smoothness and high precision, and has low impurity content and low oxygen content, so that the qualification rate of the product is greatly improved, the waste of the production cost of an enterprise is avoided, and the copper pipe is beneficial to wide popularization and application.
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.
The invention provides a technical scheme that: a high-performance seamless copper pipe stretch forming processing method comprises the following specific process steps:
example 1
S1, casting, namely melting the finished copper plate material into molten copper by using a high-temperature melting furnace;
s2, extruding, molding and cooling the molten copper through a tubular mold to form a copper pipe blank, forming an oxide layer on the outer surface of the pipe blank, and carrying out oxidation scouring treatment on the oxidized surface of the pipe blank for 20-30 minutes;
s3, rolling, namely putting the copper tube blank into a core print, pushing the core print into a four-roller planetary rolling mill for rolling to prepare a half-layer copper tube A, wherein the rolling speed is 45 r/min, the feeding amount is 4500 mm/time, and the feeding amount and the rolling speed are adjusted in the rolling process to ensure that the tube has no flash;
s4, putting the semi-layer copper tube A into an annealing furnace for annealing, wherein the annealing temperature is 400 ℃, the annealing time is 3 hours, and the cooling time is 4 hours, so as to obtain a semi-finished copper tube B;
s5, using a copper tube stretcher, stretching a semi-finished copper tube B by using the stretcher, wherein the first stretching force is 350KN, the stretching speed is 150m/min, preparing a semi-finished copper tube C, conveying the semi-finished copper tube C into stretching equipment for secondary stretching, the stretching speed is 1300m/min, the stretching force is 15KN, the copper tubes can be stretched into different diameters according to requirements, and the copper tube A is prepared after stretching is completed;
s6, polishing the surface of the copper pipe A, detecting after polishing, polishing the inner cavity of the copper pipe A after surface polishing after qualified detection, and obtaining a copper pipe B after polishing;
s7, after the copper pipe B penetrates through the sawing device, straightening and sawing are carried out through the sawing device, and then burrs at the sawing end are removed to obtain a copper pipe C;
s8, the straightness of the finished product can be guaranteed by using a precision hydraulic drawing machine for the copper pipe C, the damage to the precision of the inner hole after the copper pipe C is straightened by using a straightening machine is avoided, the precision is high, and the stability is good;
s9, putting the copper pipe processed in the step S8 into cleaning equipment for cleaning treatment;
s10, drying the cleaned copper pipe, wherein the drying temperature is 90-110 ℃ and the drying time is 40-60S;
s11, inspecting the dried product, and checking whether the product is qualified;
and S12, packaging the qualified copper tubes and warehousing.
From example 1, it can be seen that: the copper pipe prepared by the processing method has the advantages of general precision, high impurity content and high smoothness.
Example 2
S1, casting, namely melting the finished copper plate material into molten copper by using a high-temperature melting furnace;
s2, extruding, molding and cooling the molten copper through a tubular mold to form a copper pipe blank, forming an oxide layer on the outer surface of the pipe blank, and carrying out oxidation scouring treatment on the oxidized surface of the pipe blank for 20-30 minutes;
s3, rolling, namely putting the copper tube blank into a core print, pushing the core print into a four-roller planetary rolling mill for rolling to prepare a half-layer copper tube A, wherein the rolling speed is 48 r/min, the feeding amount is 4600 mm/time, and in the rolling process, the feeding amount and the rolling speed are adjusted to ensure that the tube has no flash;
s4, putting the semi-layer copper tube A into an annealing furnace for annealing, wherein the annealing temperature is 500 ℃, the annealing time is 5 hours, and the cooling time is 8 hours, so as to obtain a semi-finished copper tube B;
s5, using a copper tube stretcher, stretching a semi-finished copper tube B by using the stretcher, wherein the first stretching force is 380KN, the stretching speed is 160m/min, preparing a semi-finished copper tube C, conveying the semi-finished copper tube C into stretching equipment for secondary stretching, the stretching speed is 1400m/min, the stretching force is 18KN, the copper tubes can be stretched into different diameters according to requirements, and the copper tube A is prepared after stretching is completed;
s6, polishing the surface of the copper pipe A, detecting after polishing, polishing the inner cavity of the copper pipe A after surface polishing after qualified detection, and obtaining a copper pipe B after polishing;
s7, after the copper pipe B penetrates through the sawing device, straightening and sawing are carried out through the sawing device, and then burrs at the sawing end are removed to obtain a copper pipe C;
s8, the straightness of the finished product can be guaranteed by using a precision hydraulic drawing machine for the copper pipe C, the damage to the precision of the inner hole after the copper pipe C is straightened by using a straightening machine is avoided, the precision is high, and the stability is good;
s9, putting the copper pipe processed in the step S8 into cleaning equipment for cleaning treatment;
s10, drying the cleaned copper pipe, wherein the drying temperature is 90-110 ℃ and the drying time is 40-60S;
s11, inspecting the dried product, and checking whether the product is qualified;
and S12, packaging the qualified copper tubes and warehousing.
From example 2, it can be seen that: the copper pipe prepared by the processing method has high precision, low impurity content and high smoothness.
Example 3
S1, casting, namely melting the finished copper plate material into molten copper by using a high-temperature melting furnace;
s2, extruding, molding and cooling the molten copper through a tubular mold to form a copper pipe blank, forming an oxide layer on the outer surface of the pipe blank, and carrying out oxidation scouring treatment on the oxidized surface of the pipe blank for 20-30 minutes;
s3, rolling, namely putting the copper tube blank into a core print, pushing the core print into a four-roller planetary rolling mill for rolling to prepare a half-layer copper tube A, wherein the rolling speed is 50 revolutions per minute, the feeding amount is 4700mm per time, and in the rolling process, the feeding amount and the rolling speed are adjusted to ensure that the tube has no flash;
s4, putting the semi-layer copper tube A into an annealing furnace for annealing, wherein the annealing temperature is 600 ℃, the annealing time is 8 hours, and the cooling time is 12 hours, so as to obtain a semi-finished copper tube B;
s5, using a copper tube stretcher, stretching a semi-finished copper tube B by using the stretcher, wherein the first stretching force is 400KN, the stretching speed is 180m/min, preparing a semi-finished copper tube C, conveying the semi-finished copper tube C into stretching equipment for secondary stretching, the stretching speed is 1500m/min, the stretching force is 20KN, the copper tubes can be stretched into different diameters according to requirements, and the copper tube A is prepared after stretching is completed;
s6, polishing the surface of the copper pipe A, detecting after polishing, polishing the inner cavity of the copper pipe A after surface polishing after qualified detection, and obtaining a copper pipe B after polishing;
s7, after the copper pipe B penetrates through the sawing device, straightening and sawing are carried out through the sawing device, and then burrs at the sawing end are removed to obtain a copper pipe C;
s8, the straightness of the finished product can be guaranteed by using a precision hydraulic drawing machine for the copper pipe C, the damage to the precision of the inner hole after the copper pipe C is straightened by using a straightening machine is avoided, the precision is high, and the stability is good;
s9, putting the copper pipe processed in the step S8 into cleaning equipment for cleaning treatment;
s10, drying the cleaned copper pipe, wherein the drying temperature is 90-110 ℃ and the drying time is 40-60S;
s11, inspecting the dried product, and checking whether the product is qualified;
and S12, packaging the qualified copper tubes and warehousing.
From example 3, it can be seen that: the copper pipe prepared by the processing method has the advantages of low precision, low impurity content and low smoothness, and the embodiment 2 is the optimal preparation method.
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. A high-performance seamless copper pipe stretch forming processing method is characterized in that: the specific process steps are as follows:
s1, casting, namely melting the finished copper plate material into molten copper by using a high-temperature melting furnace;
s2, extruding, molding and cooling the molten copper through a tubular mold to form a copper pipe blank, forming an oxide layer on the outer surface of the pipe blank, and carrying out oxidation scouring treatment on the oxidized surface of the pipe blank;
s3, rolling, namely putting the copper tube blank into a core print, pushing the core print into a four-roller planetary rolling mill for rolling to prepare a semi-finished copper tube A, wherein the rolling speed is 45-50 r/min, the feeding amount is 4500 plus material 4700 mm/time, and in the rolling process, the feeding amount and the rolling speed are adjusted to ensure that the tube has no flash;
s4, putting the semi-finished copper tube A into an annealing furnace for annealing at the annealing temperature of 400-600 ℃, the annealing time of 3-8 hours and the cooling time of 4-12 hours to obtain a semi-finished copper tube B;
s5, using a copper tube drawing machine, drawing the semi-finished copper tube B by using the drawing machine, wherein the first drawing force is 350-400KN, the drawing speed is 150-180m/min, preparing a semi-finished copper tube C, conveying the semi-finished copper tube C into drawing equipment for secondary drawing, the drawing speed is 1300-1500m/min, the drawing force is 15-20KN, drawing the copper tube into different diameters according to requirements, and preparing the copper tube A after drawing is completed;
s6, polishing the surface of the copper pipe A, detecting after polishing, polishing the inner cavity of the copper pipe A after surface polishing after qualified detection, and obtaining a copper pipe B after polishing;
s7, after the copper pipe B penetrates through the sawing device, straightening and sawing are carried out through the sawing device, and then burrs at the sawing end are removed to obtain a copper pipe C;
s8, the straightness of the finished product can be guaranteed by using a precision hydraulic drawing machine for the copper pipe C, the damage to the precision of the inner hole after the copper pipe C is straightened by using a straightening machine is avoided, the precision is high, and the stability is good;
s9, putting the copper pipe processed in the step S8 into cleaning equipment for cleaning treatment;
s10, drying the cleaned copper pipe;
s11, inspecting the dried product, and checking whether the product is qualified;
and S12, packaging the qualified copper tubes and warehousing.
2. The stretch forming processing method of the high-performance seamless copper pipe according to claim 1, characterized in that: the time of the scouring treatment is 20-30 minutes.
3. The stretch forming processing method of the high-performance seamless copper pipe according to claim 1, characterized in that: the drying temperature is 90-110 deg.C, and the drying time is 40-60 s.
4. The stretch forming processing method of the high-performance seamless copper pipe according to claim 1, characterized in that: the rolling speed is 45 r/min, the feeding amount is 4500 mm/time, the annealing temperature is 400 ℃, the annealing time is 3 hours, the cooling time is 4 hours, the first stretching force is 350KN, the stretching speed is 150m/min, the second stretching speed is 1300m/min, and the stretching force is 15 KN.
5. The stretch forming processing method of the high-performance seamless copper pipe according to claim 1, characterized in that: the rolling speed is 48 r/min, the feeding amount is 4600 mm/time, the annealing temperature is 500 ℃, the annealing time is 5 hours, the cooling time is 8 hours, the first stretching force is 380KN, the stretching speed is 160m/min, the second stretching speed is 1400m/min, and the stretching force is 18 KN.
6. The stretch forming processing method of the high-performance seamless copper pipe according to claim 1, characterized in that: the rolling speed is 50 r/min, the feeding amount is 4700 mm/time, the annealing temperature is 600 ℃, the annealing time is 8 hours, the cooling time is 12 hours, the first stretching force is 400KN, the stretching speed is 180m/min, the second stretching speed is 1500m/min, and the stretching force is 20 KN.
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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 |
| CN114085978A (en) * | 2021-10-15 | 2022-02-25 | 福建捷思金属科技发展有限公司 | Ultrahigh-pressure-resistant copper-iron alloy pipe fitting for refrigeration system and preparation method |
| CN114850238B (en) * | 2022-04-27 | 2023-12-05 | 上海海亮铜业有限公司 | Preparation method of iron bronze pipe |
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| US8479549B1 (en) * | 2009-08-17 | 2013-07-09 | Dynamic Flowform Corp. | Method of producing cold-worked centrifugal cast tubular products |
| CN201978963U (en) * | 2010-12-03 | 2011-09-21 | 金川集团有限公司 | Horizontal continuous casting-rolling-annealing-stretching equipment for yellow brass alloy condensation pipe |
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