CN102441585A - Preparation method of aluminium alloy composite pipe - Google Patents

Preparation method of aluminium alloy composite pipe Download PDF

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Publication number
CN102441585A
CN102441585A CN2011103842173A CN201110384217A CN102441585A CN 102441585 A CN102441585 A CN 102441585A CN 2011103842173 A CN2011103842173 A CN 2011103842173A CN 201110384217 A CN201110384217 A CN 201110384217A CN 102441585 A CN102441585 A CN 102441585A
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CN
China
Prior art keywords
aluminium alloy
composite pipe
blank
alloy
aluminum alloy
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Pending
Application number
CN2011103842173A
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Chinese (zh)
Inventor
潘琰峰
赵解扬
张跃杰
杜志科
李炼
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Suzhou Nonferrous Metal Research Institute Co Ltd
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Suzhou Nonferrous Metal Research Institute Co Ltd
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Application filed by Suzhou Nonferrous Metal Research Institute Co Ltd filed Critical Suzhou Nonferrous Metal Research Institute Co Ltd
Priority to CN2011103842173A priority Critical patent/CN102441585A/en
Publication of CN102441585A publication Critical patent/CN102441585A/en
Pending legal-status Critical Current

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Abstract

The invention provides a preparation method of an aluminium alloy composite pipe, comprising the following steps of: firstly fusing and refining an aluminium alloy external layer, preheating a core material aluminium alloy rod in a heat treatment furnace to the temperature from room temperature to 620 DEG C, placing into a die or a crystallizer, centering; introducing the alloy melt into the die or the crystallizer by a casting tool to clad the core material aluminium alloy rod, taking out an ingot after the external alloy layer is solidified, so as to obtain an aluminium alloy composite ingot blank; making the aluminium alloy composite ingot blank to an extrusion specification dimension, heating to 400-500 DEG C, and filling into an extruder for extruding so as to prepare a composite pipe blank; and finally drilling the head of the composite pipe blank and carrying out multi-pass drawing by using a drawing machine to prepare the composite pipe material of different specifications. According to the invention, the internal and external layer thickness of the prepared aluminium alloy composite pipe is distributed uniformly, metallurgical bonding is realized, and strength of the pipe material is uniform in all directions.

Description

The preparation method of aluminum alloy composite pipe
Technical field
The present invention relates to a kind of preparation method of aluminum alloy composite pipe, belong to the aluminum alloy processing technology field.
Background technology
The method that is used to make aluminum alloy composite pipe at present mainly contains two kinds:
Method one: adopt ratio-frequency welded tube technology, the aluminium alloy compound plate of preparing in advance is rolled into tubulose processes tubing through high-frequency welding.This processes operation is many and complicated, relates to the rolling and pipe rolling technique of aluminium alloy compound slab, and seam inspection, post-weld annealed etc., and cost is higher relatively, and production joint place intensity a little less than.In addition, equipment investment is big, and common ratio-frequency welded tube equipment price adds that basically millions of production line of corollary equipment needs up to ten million.
Method two: cover control composite ingot+extruding+drawing preparation method; Promptly prepare earlier the ingot blank of outer aluminium alloy and core aluminium alloy respectively; Again outer aluminium alloy ingot blank is squeezed into pipe; Be full of method or additive method through heat and be enclosed within the outer layer alloys pipe and process compound ingot blank on the core alloy bar, at last this compound ingot blank is pulled out and prepares aluminum alloy composite pipe through being crushed to the composite pipe blank post-tensioning.Relative method one, this method can shorten the process-cycle, reduces equipment investment cost.But still there is the problem that manufacturing procedure is more relatively, cost is high in this method, and the assembling of ectonexine aluminum alloy blank the time certainly existed the slit, and residual air can influence follow-up extruding of compound ingot blank and drawing quality in the slit.
Summary of the invention
The objective of the invention is to overcome the deficiency that prior art exists, a kind of preparation method of aluminum alloy composite pipe is provided.
The object of the invention is realized through following technical scheme:
The preparation method of aluminum alloy composite pipe may further comprise the steps:
1) with outer aluminum alloy melting, refining, the core aluminium alloy bars is put in mould or the crystallizer centering after in heat-treatment furnace, being preheated to room temperature~620 ℃; Through the cast instrument alloy melt is imported coating core aluminium alloy bars in mould or the crystallizer, treat to take out ingot casting after outer layer alloys is solidified, obtain the aluminium alloy compound ingot blank;
2) with aluminium alloy compound ingot blank railway carriage to the extruding specification, be heated to 400 ~ 500 ℃ again after filling advance in the extruder, push and prepare composite pipe blank;
3) composite pipe of different size is prepared through the drawing of drawbench multiple tracks in the composite pipe blank back of taking the lead.
Further, the preparation method of above-mentioned aluminum alloy composite pipe, the multiple tube of step 3) preparation, the wall thickness ratio that the thickness of its external composite layer accounts for whole multiple tube is 3 ~ 50%.
Further, the preparation method of above-mentioned aluminum alloy composite pipe, said outer aluminium alloy is the Al-Si alloy.
Substantive distinguishing features and obvious improvement that technical scheme of the present invention is outstanding are mainly reflected in:
Aluminum alloy composite pipe preparation technology of the present invention is simple, and aluminum alloy composite pipe ectonexine thickness distribution is even, realizes metallurgical binding, tubing intensity each to evenly.Only need smelting-casting equipment, extrusion equipment and drawing equipment and heat-treatment furnace, equipment investment is few, can effectively enhance productivity.With respect to the multiple tube preparation method of prior art, the present invention saves the sleeve pipe operation of outer aluminium alloy ingot blank and the processing of pipe, compound ingot blank, has shortened the preparation flow of multiple tube, saves mass energy, reduces production costs.The aluminum alloy composite pipe composite bed of preparing is wider than scope, alloy is wide in variety, tubing intensity each to evenly, can be widely used in the heat-exchanging part of automobile, air-conditioning, refrigerator etc., and other applications.
The specific embodiment
The present invention provides a kind of method that can simple and effectively prepare aluminum alloy composite pipe, can significantly improve production efficiency, reduces production costs.
Concrete processing step is:
1) with outer aluminum alloy melting, refining, outer aluminium alloy is the Al-Si alloy, and the core aluminium alloy bars is put in mould or the crystallizer centering after in heat-treatment furnace, being preheated to room temperature~620 ℃; Through the cast instrument alloy melt is imported coating core aluminium alloy bars in mould or the crystallizer, treat to take out ingot casting after outer layer alloys is solidified, outer aluminum alloy melt is coated on the core aluminium alloy bars base, obtains the aluminium alloy compound ingot blank;
2) with aluminium alloy compound ingot blank railway carriage to the extruding specification, be heated to 400 ~ 500 ℃ again after filling advance in the extruder, push and prepare composite pipe blank;
3) composite pipe of different size is prepared through the drawing of drawbench multiple tracks in the composite pipe blank back of taking the lead, the wall thickness ratio that the thickness of the composite bed of multiple tube accounts for whole multiple tube is 3 ~ 50%.
Through control composite bed thickness, drawing processing capacity and annealing schedule, can obtain the aluminum alloy composite pipe of all size, state, can satisfy the application requirements of different occasions.
Ectonexine aluminium alloy kind is selected extensively, can be used for the soldering occasion in the time of can selecting the Al-Si alloy for use according to compound billet base, especially outer layer alloys that various aluminium alloys combinations are prepared in different occasions requirements.The core aluminium alloy bars can be the solid bar base, also can be the hollow bar base.
Aluminum alloy composite pipe preparation technology of the present invention is simple, and aluminum alloy composite pipe ectonexine thickness distribution is even, realizes metallurgical binding, tubing intensity each to evenly.Only need smelting-casting equipment, extrusion equipment and drawing equipment and heat-treatment furnace, equipment investment is few, can effectively enhance productivity.With respect to the multiple tube preparation method of prior art, the present invention saves the sleeve pipe operation of outer aluminium alloy ingot blank and the processing of pipe, compound ingot blank, has shortened the preparation flow of multiple tube, saves mass energy, reduces production costs.This technology is not limited by the alloy kind, can prepare the multiple tube of various aluminium alloy combinations, can be used for the heat-exchanging part of automobile, air-conditioning, refrigerator etc., and other applications.
What need understand is: the above only is a preferred implementation of the present invention; For those skilled in the art; Under the prerequisite that does not break away from the principle of the invention, can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.

Claims (3)

1. the preparation method of aluminum alloy composite pipe is characterized in that may further comprise the steps:
1) with outer aluminum alloy melting, refining, the core aluminium alloy bars is put in mould or the crystallizer centering after in heat-treatment furnace, being preheated to room temperature~620 ℃; Through the cast instrument alloy melt is imported coating core aluminium alloy bars in mould or the crystallizer, treat to take out ingot casting after outer layer alloys is solidified, obtain the aluminium alloy compound ingot blank;
2) with aluminium alloy compound ingot blank railway carriage to the extruding specification, be heated to 400 ~ 500 ℃ again after filling advance in the extruder, push and prepare composite pipe blank;
3) composite pipe of different size is prepared through the drawing of drawbench multiple tracks in the composite pipe blank back of taking the lead.
2. the preparation method of aluminum alloy composite pipe according to claim 1 is characterized in that: the multiple tube of step 3) preparation, the wall thickness ratio that the thickness of its external composite layer accounts for whole multiple tube is 3 ~ 50%.
3. the preparation method of aluminum alloy composite pipe according to claim 1, it is characterized in that: said outer aluminium alloy is the Al-Si alloy.
CN2011103842173A 2011-11-28 2011-11-28 Preparation method of aluminium alloy composite pipe Pending CN102441585A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN2011103842173A CN102441585A (en) 2011-11-28 2011-11-28 Preparation method of aluminium alloy composite pipe

Publications (1)

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CN102441585A true CN102441585A (en) 2012-05-09

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102825099A (en) * 2012-09-20 2012-12-19 江苏金源锻造股份有限公司 Manufacturing method of GH4145 alloy pipe
CN102873241A (en) * 2012-09-20 2013-01-16 江苏金源锻造股份有限公司 GH4145 alloy ribbon manufacturing method
CN104476128A (en) * 2014-11-21 2015-04-01 西安邦信特种金属材料科技有限公司 Method of manufacturing high-temperature alloy pipe blanks
CN105562662A (en) * 2015-12-23 2016-05-11 上海交通大学 Method for preparing bimetallic composite through combination of solid-liquid compounding and drawing of solid aluminum materials
CN112658053A (en) * 2020-12-02 2021-04-16 中南大学 Method for manufacturing fire extinguisher bottle body through pultrusion

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3455372A (en) * 1967-03-08 1969-07-15 Hidesuke Yamamoto Continuous padding method using high frequency current
CN1396017A (en) * 2002-08-20 2003-02-12 江苏兴荣高新科技股份有限公司 Technology for conticasting composite hollow pipe blank
CN1857826A (en) * 2006-05-22 2006-11-08 辽宁工学院 Composite ingot set for continuous casting of Cu-Al bimetal in down-pulling reverse solidification process
CN101112717A (en) * 2006-07-28 2008-01-30 孙爱忠 Method for preparation of trilaminar aluminum or aluminum alloy composite material and the blank-casting device
CN101575214A (en) * 2009-06-16 2009-11-11 中国矿业大学(北京) Method for preparing ceramic powder through microwave-initiated gel
CN101829704A (en) * 2010-05-21 2010-09-15 江苏亚太轻合金科技股份有限公司 Method for processing aluminum alloy composite pipe

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3455372A (en) * 1967-03-08 1969-07-15 Hidesuke Yamamoto Continuous padding method using high frequency current
CN1396017A (en) * 2002-08-20 2003-02-12 江苏兴荣高新科技股份有限公司 Technology for conticasting composite hollow pipe blank
CN1857826A (en) * 2006-05-22 2006-11-08 辽宁工学院 Composite ingot set for continuous casting of Cu-Al bimetal in down-pulling reverse solidification process
CN101112717A (en) * 2006-07-28 2008-01-30 孙爱忠 Method for preparation of trilaminar aluminum or aluminum alloy composite material and the blank-casting device
CN101575214A (en) * 2009-06-16 2009-11-11 中国矿业大学(北京) Method for preparing ceramic powder through microwave-initiated gel
CN101829704A (en) * 2010-05-21 2010-09-15 江苏亚太轻合金科技股份有限公司 Method for processing aluminum alloy composite pipe

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102825099A (en) * 2012-09-20 2012-12-19 江苏金源锻造股份有限公司 Manufacturing method of GH4145 alloy pipe
CN102873241A (en) * 2012-09-20 2013-01-16 江苏金源锻造股份有限公司 GH4145 alloy ribbon manufacturing method
CN104476128A (en) * 2014-11-21 2015-04-01 西安邦信特种金属材料科技有限公司 Method of manufacturing high-temperature alloy pipe blanks
CN105562662A (en) * 2015-12-23 2016-05-11 上海交通大学 Method for preparing bimetallic composite through combination of solid-liquid compounding and drawing of solid aluminum materials
CN112658053A (en) * 2020-12-02 2021-04-16 中南大学 Method for manufacturing fire extinguisher bottle body through pultrusion

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Application publication date: 20120509