CN101704020A - Method for producing aluminum alloy complex plate strip foil blank for brazing heat exchanger - Google Patents

Method for producing aluminum alloy complex plate strip foil blank for brazing heat exchanger Download PDF

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Publication number
CN101704020A
CN101704020A CN200910304659A CN200910304659A CN101704020A CN 101704020 A CN101704020 A CN 101704020A CN 200910304659 A CN200910304659 A CN 200910304659A CN 200910304659 A CN200910304659 A CN 200910304659A CN 101704020 A CN101704020 A CN 101704020A
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aluminum alloy
rolling
plate strip
heat exchanger
casting
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CN200910304659A
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郑樟玲
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郑樟玲
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Priority to CN200910304659A priority Critical patent/CN101704020A/en
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Abstract

The invention relates to a method for producing an aluminum alloy complex plate strip foil blank for a brazing heat exchanger, which comprises the following steps: smelting raw materials; continuously casting and continuously rolling core materials; raising temperature; rolling and welding a composite layer; and coiling the blank. Compared with the prior art, the method adopts continuous casting and continuous rolling to produce the aluminum alloy complex plate strip foil blank for the brazing heat exchanger, and adopts continuous casting and rolling to produce the core materials; and the core materials and the composite layer (of which the double surfaces are coated with a Al-Si alloy or other alloy with the thickness between 5 and 15 percent) are subjected to temperature rise on line, are rolled by a single stand rolling mill or tandem rolling mill, and are welded into coils for cold-rolling blank supply. Compared with hot rolling blank supply (in the prior art), the method has simple production process, and saves production procedures such as semicontinuous casting, sawing, homogeneous heating, face milling and surface treatment on cast ingots, and fixed welding, heating and hot rolling on the composite layer, and has the advantages of high yield, even coating layers, low energy consumption, low cost, little production equipment, small occupied area, short construction period, quick effect and the like.

Description

A kind of brazing heat exchanger production method of aluminum alloy complex plate strip foil blank
Technical field
The present invention relates to the production method of a kind of brazing heat exchanger with aluminum alloy complex plate strip foil blank.
Background technology
The brazing heat exchanger aluminum alloy complex plate strip foil blank is to be core with the Al-Mn alloy in the world at present, the Al-Si solder alloy of two-sided coating matrix thickness 5%-15% or other alloys, adopting that hot rolling technology is rolling to be composited, is the semi-continuous casting method for production provides ingot blank to use the most general method.This method adopts semicontinuous casting machine to produce aluminium alloy flat bloom, slab ingot is after sawing, milling face, heating and soaking, the Al-Si alloy of two-sided coating matrix thickness 5%-15% or other solder alloies, it is cold rolling for base becoming hot rolled coil by single chassis or multimachine frame hot mill rolling again.Characteristics are that yield rate is lower, equipment investment is big, and the investment payback time is long, and building time is long, and production process is many, and energy consumption is higher.Its technological process of production is as follows: hot rolling → rolling blank is closed in raw material melting → casting → sawing → homogenising → mill face → surface treatment → composite bed to fix → heat → hot weld.
Summary of the invention
Main purpose of the present invention is to overcome available technology adopting semi-continuous casting method and produces the brazing heat exchanger higher shortcoming of aluminum alloy complex plate strip foil blank production cost, a kind of production method that adopts the brazing heat exchanger of continuous casting and rolling method with aluminum alloy complex plate strip foil blank is provided, can cut down the consumption of energy greatly, reduce production costs.
The present invention adopts following technical scheme:
A kind of brazing heat exchanger production method of aluminum alloy complex plate strip foil blank, it is characterized in that comprising the steps: with the raw material melting core continuous casting and rolling, online intensification, the seam of composite bed on-line rolling obtains the rolling aluminum alloy complex plate strip foil blank at last.
Wherein, formula for raw stock is according to non-ferrous metal industry standard YS/T496-2005 of the People's Republic of China (PRC) or customer requirement proportioning.
Wherein, during the raw material melting, the furnace charge for preparing is added in the molten aluminium stove, stirs ash discharge when temperature of aluminum liquid reaches 720-750 ℃ and skim, sample analysis, alloy composition not to the time carry out the composition adjustment, and control temperature well.
Wherein, transfer to after raw material are melted and leave standstill stove and carry out refining, feed inert gas and refining flux during refining, refining time 15-25 minute, temperature of aluminum liquid 720-740 ℃, begin casting after time of repose 15-25 minute.
Wherein, online grain refinement, degasification, filtration are carried out in refining simultaneously; Online adding aluminium titanium boron wire fining agent, addition is the 0.1-0.3% of aluminium liquid weight; Feed inert gas deaeration; Aluminium liquid is by the ceramic filter plate filter cleaner.
Wherein, core molten aluminium alloy when continuous casting and rolling becomes the casting material of thickness 3-12mm, its roll casting speed 600-1200mm/min by the continuous casting and continuous rolling mill casting.
Further, with the casting material (core) of casting thickness 3-12mm and composite bed (the Al-Si alloy of two-sided coating matrix thickness 5%-15% or other alloy) is online is warming up to 460-550 ℃.
Further, casting material (core), composite bed (the Al-Si alloy of two-sided coating matrix thickness 5%-15% or other alloy) that intensification is good are compound by mill milling, obtain the aluminum alloy complex plate strip foil blank of thickness 3-10mm, its mill speed 600-1200mm/min.
By the above-mentioned description of this invention as can be known, compare with prior art, the present invention adopts the continuous casting and rolling method to produce the brazing heat exchanger aluminum alloy complex plate strip foil blank, be adopt continuous casting and rolling production alloy core material and and the online intensification of composite bed (the Al-Si alloy of two-sided coating matrix thickness 5%-15% or other alloy) after together by single chassis or multi-set of rolling mill, rolling seam rolling is cold rolling confession base.With hot rolling for base (prior art) mode simplified in comparison production technology, saved ingot casting semi-continuous casting, sawing, homogenising heating, milled face, surface treatment; Production processes such as fixedly welding of composite bed, heating, hot rolling have the yield rate height, clad is even, production equipment is few, production cost is low, energy consumption is low, advantages such as floor space is little, the construction period is short, instant effect.
The specific embodiment
A kind of brazing heat exchanger of the present invention comprises the steps: with the production method of aluminum alloy complex plate strip foil blank
(1) alloy formula: by the non-ferrous metal industry standard YS/T496-2005 of People's Republic of China (PRC) batching or customer requirement proportioning;
(2) melting: the furnace charge for preparing by (1) adds in the molten aluminium stove, stir ash discharge when temperature of aluminum liquid reaches 720-750 ℃ and skim, sample analysis, alloy composition not to the time carry out the composition adjustment, and control temperature well;
(3) leave standstill refining: melted aluminium liquid is transferred to left standstill stove and carry out refining, feed inert gas and refining flux during refining, refining time 15-25 minute, temperature of aluminum liquid 720-740 ℃, begin casting after time of repose 15-25 minute;
(4) online grain refinement, degasification, filtration: online adding aluminium titanium boron wire fining agent, addition is the 0.1-0.3% of aluminium liquid weight; Feed inert gas deaeration; Aluminium liquid is by the ceramic filter plate filter cleaner;
(5) continuous casting and rolling: molten aluminium alloy becomes 3-12mm casting material (core) by the continuous casting and continuous rolling mill casting, its roll casting speed 600-1200mm/min;
(6) heat up: with the casting material (core) of casting thickness 3-12mm and composite bed (the Al-Si alloy of two-sided coating matrix thickness 5%-15% or other alloy) is online is warming up to 460-550 ℃.
(7) composite rolling: casting material (core) that online intensification is good and composite bed (the Al-Si alloy of two-sided coating matrix thickness 5%-15% or other alloy) are compound by mill milling, obtain the aluminum alloy complex plate strip foil blank of thickness 3-10mm, its mill speed 600-1200mm/min.
Use aluminum alloy complex plate strip foil blank and adopt continuous casting and rolling of the present invention to produce brazing heat exchanger the energy consumption, the lumber recovery that consume with aluminum alloy complex plate strip foil blank to contrast as follows with adopting the semi-continuous casting method to produce brazing heat exchanger in the regular period:
Show half continuous casting process and produce brazing heat exchanger aluminum alloy complex plate strip foil blank energy consumption, lumber recovery
Energy consumption, the lumber recovery that brazing heat exchanger consumes with aluminum alloy complex plate strip foil blank produced in table two continuous casting and rolling
By above two tables as can be seen, adopt continuous casting and rolling of the present invention produce brazing heat exchanger with the energy consumption of aluminum alloy complex plate strip foil blank consumption reduce greatly, lumber recovery greatly improves.
Above-mentioned only is a specific embodiment of the present invention, but design concept of the present invention is not limited thereto, and allly utilizes this design that the present invention is carried out the change of unsubstantiality, all should belong to the behavior of invading protection domain of the present invention.

Claims (9)

1. a brazing heat exchanger is with the production method of aluminum alloy complex plate strip foil blank, it is characterized in that comprising the steps: with the raw material melting core continuous casting and rolling, online intensification, the seam of composite bed on-line rolling obtains the rolling aluminum alloy complex plate strip foil blank at last.
2. a kind of brazing heat exchanger as claimed in claim 1 production method of aluminum alloy complex plate strip foil blank is characterized in that: formula for raw stock is according to pressing non-ferrous metal industry standard YS/T496-2005 of the People's Republic of China (PRC) or customer requirement proportioning.
3. a kind of brazing heat exchanger as claimed in claim 1 production method of aluminum alloy complex plate strip foil blank, it is characterized in that: during the raw material melting, the furnace charge for preparing is added in the molten aluminium stove, stirring ash discharge when temperature of aluminum liquid reaches 720-750 ℃ skims, sample analysis, alloy composition not to the time carry out the composition adjustment, and control temperature well.
4. a kind of brazing heat exchanger as claimed in claim 1 production method of aluminum alloy complex plate strip foil blank, it is characterized in that: transfer to after raw material are melted and leave standstill stove and carry out refining, feed inert gas and refining flux during refining, refining time 15-25 minute, temperature of aluminum liquid 720-740 ℃, begin casting after time of repose 15-25 minute.
5. a kind of brazing heat exchanger as claimed in claim 4 production method of aluminum alloy complex plate strip foil blank, it is characterized in that: online grain refinement, degasification, filtration are carried out in refining simultaneously; Online adding aluminium titanium boron wire fining agent, addition is the 0.1-0.3% of aluminium liquid weight; Feed inert gas deaeration; Aluminium liquid is by the ceramic filter plate filter cleaner.
6. a kind of brazing heat exchanger as claimed in claim 1 production method of aluminum alloy complex plate strip foil blank, it is characterized in that: core molten aluminium alloy when continuous casting and rolling becomes 3-12mm casting material by the continuous casting and continuous rolling mill casting, its roll casting speed 600-1200mm/min.
7. a kind of brazing heat exchanger as claimed in claim 6 is characterized in that with the production method of aluminum alloy complex plate strip foil blank: the online 460-550 of being warming up to of casting material, composite bed ℃ of the 3-12mm that casting is become.
8. a kind of brazing heat exchanger as claimed in claim 7 production method of aluminum alloy complex plate strip foil blank, it is characterized in that: described composite bed is Al-Si alloy or other alloy of two-sided coating matrix thickness 5%-15%.
9. a kind of brazing heat exchanger as claimed in claim 7 production method of aluminum alloy complex plate strip foil blank, it is characterized in that: the casting material that online intensification is good, composite bed are compound by mill milling, obtain the aluminum alloy complex plate strip foil blank of thickness 3-10mm, its mill speed 600-1200mm/min.
CN200910304659A 2009-07-22 2009-07-22 Method for producing aluminum alloy complex plate strip foil blank for brazing heat exchanger Pending CN101704020A (en)

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CN200910304659A CN101704020A (en) 2009-07-22 2009-07-22 Method for producing aluminum alloy complex plate strip foil blank for brazing heat exchanger

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Application Number Priority Date Filing Date Title
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101885001A (en) * 2010-07-15 2010-11-17 徐州财发铝热传输有限公司 Continuous cast-rolling method of aluminum/aluminum composite boards
CN102836875A (en) * 2012-08-29 2012-12-26 三门峡天一铝业有限公司 Continuous composite rolling process of aluminum plate, aluminum foil and aluminum band for automobile heat exchanger
CN104139217A (en) * 2014-08-01 2014-11-12 中色科技股份有限公司 Production method for cladding plate for brazing type aluminum alloy composite plate strip foil
CN105499270A (en) * 2014-09-25 2016-04-20 上海六晶科技股份有限公司 Preparation method by employing double-face coated jacketing plates to roll foil
CN110983126A (en) * 2020-01-10 2020-04-10 广西百矿润泰铝业有限公司 Preparation method of 5754 alloy aluminum plate for automobile
CN111347735A (en) * 2020-04-03 2020-06-30 江苏鼎胜新能源材料股份有限公司 Composite board for brazing and manufacturing method thereof
CN112611249A (en) * 2020-12-04 2021-04-06 无锡市禹江铝热科技有限公司 Folding dotting flat pipe, water tank core body and manufacturing method of folding dotting flat pipe and water tank core body

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101885001A (en) * 2010-07-15 2010-11-17 徐州财发铝热传输有限公司 Continuous cast-rolling method of aluminum/aluminum composite boards
CN102836875A (en) * 2012-08-29 2012-12-26 三门峡天一铝业有限公司 Continuous composite rolling process of aluminum plate, aluminum foil and aluminum band for automobile heat exchanger
CN102836875B (en) * 2012-08-29 2015-09-02 三门峡天一铝业有限公司 The continuous composite rolling technique of car heat exchanger aluminium sheet, aluminium foil, aluminium strip
CN104139217A (en) * 2014-08-01 2014-11-12 中色科技股份有限公司 Production method for cladding plate for brazing type aluminum alloy composite plate strip foil
CN105499270A (en) * 2014-09-25 2016-04-20 上海六晶科技股份有限公司 Preparation method by employing double-face coated jacketing plates to roll foil
CN110983126A (en) * 2020-01-10 2020-04-10 广西百矿润泰铝业有限公司 Preparation method of 5754 alloy aluminum plate for automobile
CN110983126B (en) * 2020-01-10 2021-06-04 广西百矿润泰铝业有限公司 Preparation method of 5754 alloy aluminum plate for automobile
CN111347735A (en) * 2020-04-03 2020-06-30 江苏鼎胜新能源材料股份有限公司 Composite board for brazing and manufacturing method thereof
CN112611249A (en) * 2020-12-04 2021-04-06 无锡市禹江铝热科技有限公司 Folding dotting flat pipe, water tank core body and manufacturing method of folding dotting flat pipe and water tank core body

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