CN103567252B - The manufacture craft of heavy wall copper pipe - Google Patents
The manufacture craft of heavy wall copper pipe Download PDFInfo
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- CN103567252B CN103567252B CN201210251652.3A CN201210251652A CN103567252B CN 103567252 B CN103567252 B CN 103567252B CN 201210251652 A CN201210251652 A CN 201210251652A CN 103567252 B CN103567252 B CN 103567252B
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- copper pipe
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Abstract
The invention discloses a kind of manufacture craft of heavy wall copper pipe, comprise the following steps: 1. forge and press: furnace temperature is elevated to 850 ~ 900 DEG C and copper ingot is forged and pressed, be then incubated 2 ~ 7 hours; 2. backward extrusion: by spacing for copper ingot external mold, carries out backward extrusion by internal mold to copper rod and forms the copper pipe bottom band, then the copper pipe squeezed out being cooled to normal temperature; 3. cold extrusion: copper pipe is elongated to the size required through cold extrusion, is incubated 3 ~ 4 hours.Process for making of the present invention is clear, by the isoparametric conservative control of temperature, can go out satisfactory heavy wall copper pipe, and quality is very good by simple, usual explained hereafter.
Description
Technical field
The present invention relates to a kind of manufacture craft of crystallizer copper pipe, particularly a kind of manufacture craft of heavy wall copper pipe.
Background technology
Casting process injects in crystallizer by molten steel, obtains the process of strand continuously, and it is the intermediate link connecting refining steel and rolled steel, is the important component part of STEELMAKING PRODUCTION.Crystallizer is the important component part of smeltery's conticaster, and crystallizer copper pipe is the vitals of crystallizer.Because high-temperature molten steel directly flows through crystallizer copper pipe, for making continuous casting work process stabilization, support equipment and operator safety again, just requires that crystallizer copper pipe has good high temperature resistant, wear-resistant and decay resistance.In order to improve the cooling effect of crystallizer, can consider to offer multiple groove at copper pipe outer surface, Cooling Water flows through, and this just must need the wall thickness of copper pipe to increase.The wall thickness of existing copper pipe is generally 25 millimeters or 30 millimeters, such thickness cannot carry out the technique of slotting at all in aft-loaded airfoil, and once wall thickness is increased to more than 57 millimeters, when being even 70 millimeters, because wall thickness increases, when carrying out backward extrusion technology step, easily there is cracking in copper ingot, causes scrapping.
Summary of the invention
The object of the invention is the defect solving prior art existence, providing a kind of does not have particular/special requirement to production equipment, can produce the manufacture craft of high-quality heavy wall copper pipe.
The technical scheme realizing the object of the invention is a kind of manufacture craft of heavy wall copper pipe, comprises the following steps:
1. forge and press: furnace temperature is elevated to 850 ~ 900 DEG C, and copper ingot is forged into copper rod, is then incubated 6 ~ 7 hours;
2. backward extrusion: by spacing for copper ingot external mold, carries out backward extrusion by internal mold to copper rod and forms the copper pipe bottom band, then the copper pipe squeezed out being cooled to normal temperature;
3. cold extrusion: copper pipe is elongated to the size required through cold extrusion, is incubated 3 ~ 4 hours.
Described the cold extrusion 3. in step adopts repeatedly cold-stamped technique, and be specially: the monolateral wall thickness of copper pipe often reduces 5 ~ 6 millimeters, once, temperature is 600 ~ 650 DEG C in tempering, till copper pipe wall thickness reaches requirement; Calculate required dimension of inner and outer diameters as requested during aforementioned each cold extrusion, and guarantee each cold-stamped precision by the mode that correspondence changes inside and outside mould.
After have employed technique scheme, the present invention has following useful effect: (1) process for making of the present invention is clear, by the isoparametric conservative control of temperature, satisfactory heavy wall copper pipe can be gone out by simple, usual explained hereafter, and quality is very good.
(2) because the more general copper pipe of heavy wall copper pipe tube wall is much thick, if adopt common cold-extrusion technology to carry out disposable extruding, likely can be long because of the time of required extruding, copper rod cooling is fast, cause easily occurring cracking, and be not easy control dynamics and speed ensures once to extrude to put in place, and the present invention is when carrying out cold extrusion, adopt repeatedly the form of cold-extruded, just can solve this problem, control the time of each backward extrusion, make its cooling slow, thus stopped copper pipe problem of Cracking.
Detailed description of the invention
The manufacture craft of a kind of heavy wall copper pipe of the present embodiment, comprises the following steps:
1. forge and press: furnace temperature is elevated to 850 ~ 900 DEG C, and copper ingot is forged into copper rod, is then incubated 6 ~ 7 hours;
2. backward extrusion: by spacing for copper ingot external mold, carries out backward extrusion by internal mold to copper rod and forms the copper pipe bottom band, then the copper pipe squeezed out being cooled to normal temperature;
3. cold extrusion: copper pipe is elongated to the size required through cold extrusion, is incubated 3 ~ 4 hours.Cold extrusion adopts repeatedly cold-stamped technique, is specially: the monolateral wall thickness of copper pipe often reduces 5 ~ 6 millimeters, and once, temperature is 600 ~ 650 DEG C, till copper pipe wall thickness reaches requirement in tempering; Calculate required dimension of inner and outer diameters as requested during aforementioned each cold extrusion, and guarantee each cold-stamped precision by the mode that correspondence changes inside and outside mould.Cold extrusion, is commonly called as cold moulding, and the copper pipe that namely stretches under normal temperature is to improve the technique of the hardness of copper pipe.
Be the thick-walled pipe of 800 for model, so-called model is the thick-walled pipe of 800, refer to that internal diameter is roughly the copper pipe of 800 millimeters, the concrete internal diameter size of the finished product that final production is determined is 817 millimeters, wall thickness is 70 millimeters, external diameter is 957 millimeters, during fabrication, select diameter to be the copper ingot of 380 millimeters, forge and press to diameter be 1001 millimeters, in backward extrusion step, 817 millimeters that reach needed for finished product with internal model control internal diameter, external diameter is still 1001 millimeters, by repeatedly cold extrusion, final reduced outside diameter and wall thickness, make to reach requirement.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (1)
1. a manufacture craft for heavy wall copper pipe, is characterized in that comprising the following steps:
1. forge and press: furnace temperature is elevated to 850 ~ 900 DEG C, and copper ingot is forged into copper rod, is then incubated 6 ~ 7 hours;
2. backward extrusion: by spacing for copper rod external mold, carries out backward extrusion by internal mold to copper rod and forms the copper pipe bottom band, then the copper pipe squeezed out being cooled to normal temperature;
3. cold extrusion: copper pipe is elongated to the size required through cold extrusion, is incubated 3 ~ 4 hours; Described the cold extrusion 3. in step adopts repeatedly cold-stamped technique, and be specially: the monolateral wall thickness of copper pipe often reduces 5 ~ 6 millimeters, once, temperature is 600 ~ 650 DEG C in tempering, till copper pipe wall thickness reaches requirement; Calculate required dimension of inner and outer diameters as requested during aforementioned each cold extrusion, and guarantee each cold-stamped precision by the mode that correspondence changes inside and outside mould.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210251652.3A CN103567252B (en) | 2012-07-19 | 2012-07-19 | The manufacture craft of heavy wall copper pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210251652.3A CN103567252B (en) | 2012-07-19 | 2012-07-19 | The manufacture craft of heavy wall copper pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103567252A CN103567252A (en) | 2014-02-12 |
| CN103567252B true CN103567252B (en) | 2015-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210251652.3A Active CN103567252B (en) | 2012-07-19 | 2012-07-19 | The manufacture craft of heavy wall copper pipe |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107008769B (en) * | 2017-05-10 | 2019-02-19 | 常州市武进长虹结晶器有限公司 | The preparation method of crystallizer copper pipe |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1199420A1 (en) * | 1983-11-18 | 1985-12-23 | Предприятие П/Я Г-4708 | Method of producing articles of sleeve type |
| JP2004211115A (en) * | 2002-12-27 | 2004-07-29 | Kobe Steel Ltd | Method for producing copper pipe |
| JP2005009673A (en) * | 2003-05-22 | 2005-01-13 | Furukawa Sky Kk | Method of manufacture of pressure vessel |
| CN1799721A (en) * | 2005-12-29 | 2006-07-12 | 大连冶金结晶器有限公司 | Adjustable mold employing reverse extrusion and draw forming for raw copper tube of mould, reverse extrusion and draw forming method thereof |
| CN102240890A (en) * | 2011-05-20 | 2011-11-16 | 西部钛业有限责任公司 | Manufacturing method of thick-walled titanium tube |
| CN102492868A (en) * | 2011-12-26 | 2012-06-13 | 昆明理工大学 | Cu-Bi alloy and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007063643B4 (en) * | 2007-06-28 | 2012-07-26 | Wieland-Werke Ag | Copper-zinc alloy, method of manufacture and use |
-
2012
- 2012-07-19 CN CN201210251652.3A patent/CN103567252B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1199420A1 (en) * | 1983-11-18 | 1985-12-23 | Предприятие П/Я Г-4708 | Method of producing articles of sleeve type |
| JP2004211115A (en) * | 2002-12-27 | 2004-07-29 | Kobe Steel Ltd | Method for producing copper pipe |
| JP2005009673A (en) * | 2003-05-22 | 2005-01-13 | Furukawa Sky Kk | Method of manufacture of pressure vessel |
| CN1799721A (en) * | 2005-12-29 | 2006-07-12 | 大连冶金结晶器有限公司 | Adjustable mold employing reverse extrusion and draw forming for raw copper tube of mould, reverse extrusion and draw forming method thereof |
| CN102240890A (en) * | 2011-05-20 | 2011-11-16 | 西部钛业有限责任公司 | Manufacturing method of thick-walled titanium tube |
| CN102492868A (en) * | 2011-12-26 | 2012-06-13 | 昆明理工大学 | Cu-Bi alloy and preparation method thereof |
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| CN103567252A (en) | 2014-02-12 |
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