CN108300913A - A kind of continuous casting and rolling process for production of 5356 aluminum alloy welding bar - Google Patents

A kind of continuous casting and rolling process for production of 5356 aluminum alloy welding bar Download PDF

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Publication number
CN108300913A
CN108300913A CN201810126651.3A CN201810126651A CN108300913A CN 108300913 A CN108300913 A CN 108300913A CN 201810126651 A CN201810126651 A CN 201810126651A CN 108300913 A CN108300913 A CN 108300913A
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rolling
aluminum alloy
aluminium
alloy welding
casting
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周天国
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Jiangsu Hetuo aluminum wire Co.,Ltd.
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周天国
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • C22C21/06Alloys based on aluminium with magnesium as the next major constituent
    • C22C21/08Alloys based on aluminium with magnesium as the next major constituent with silicon
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B1/00Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/46Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
    • B21B1/466Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a non-continuous process, i.e. the cast being cut before rolling
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making alloys
    • C22C1/02Making alloys by melting
    • C22C1/026Alloys based on aluminium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making alloys
    • C22C1/02Making alloys by melting
    • C22C1/03Making alloys by melting using master alloys
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making alloys
    • C22C1/06Making alloys with the use of special agents for refining or deoxidising
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/002Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • C22F1/047Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent

Abstract

The present invention relates to aluminum alloy welding pole technology field, especially a kind of continuous casting and rolling process for production of 5356 aluminum alloy welding bar;The production technology includes the following steps:(1) melting (2) continuous casting and rolling, pass through continuous casting cooling water constant temperature technology, roll temperature control technique, tandem rolling emulsion constant temperature technology, between control finishing temperature is 340 460 DEG C, and water quenching is carried out to the 5356 aluminum alloy welding bars of Φ 9.5mm with speed of the cooling velocity higher than 100 DEG C/min;(3) line bar draws bar water quenching system by oil-free, and the speed with cooling velocity higher than 100 DEG C/min is cooled to 100 DEG C, and under rear haulage and continuous around rod systemic effect, double frames are put away sports equipment in rolls, and bundle rolls into disk;The 5356 aluminum alloy welding bars that casting and rolling process proposed by the present invention is produced obtain the 5356 aluminum alloy welding bars that low hydrogen suboxides are mingled with surface-brightening stable quality even tissue by Controlled Rolling And Controlled Cooling.

Description

A kind of continuous casting and rolling process for production of 5356 aluminum alloy welding bar
Technical field
The present invention relates to aluminum alloy welding pole technology field, the continuous casting and rolling of especially a kind of 5356 aluminum alloy welding bar produces work Skill.
Background technology
In recent years, the fields such as China's aerospace, high ferro high speed development, wins a series of victories.This is also in aerospace, height More stringent requirements are proposed for non-ferrous metal-aluminium alloy that the fields such as iron, automobile are most widely used.It is with aluminium alloy with high ferro Example, compartment is formed by the wide thin-wall aluminum alloy Member Welding of Large Flat.And the feelings that the performance of welding structural element is certain in base material Under condition, the performance of welding wire is depended on.
High-performance aluminium alloy welding wire is the emphasis new material that China is badly in need of at present.China mainly uses semicontinuous casting at present - extrusion 5356 aluminium alloy welding wire line bars of production are made, by the continuously elongated Quality of Final Welding Wire produced at welding wire, this mode of line bar It is unstable, seriously affect the quality of weld seam.And after semi-continuous casting, need to carry out ingot homogenization annealing, time and effort consuming increases The consumption of the energy.
The present invention produces 5356 aluminum alloy welding bars using continuous casting and rolling method, by three big key technologies:When alloy at Point, second is that the cleaning molten technique in fusion process, third, in continuous rolling process temperature stringent control, obtain low hydrogen-suboxides It is mingled with -5356 aluminum alloy welding bars of surface-brightening-stable quality-even tissue.With current China's semi-continuous casting-extrusion phase Than this method eliminates ingot homogenization annealing steps, realizes 5356 aluminum alloy welding bar continuous casting and tandem rolling production technologies, energy saving drop Consumption, it is cost-effective.And continuous casting and rolling method can realize the molding of disposable weight aluminum alloy welding bar, and then when can reduce welding Connector avoids declining phenomenon because of performance caused by welding point.So the invention has important theory significance and practical valence Value.
Invention content
The purpose of the present invention is:Overcome deficiency in the prior art, a kind of continuous casting and rolling of 5356 aluminum alloy welding bar is provided Production technology is mingled with -5356 aluminum alloy welding bars of surface-brightening-stable quality-even tissue for the follow-up low hydrogen-suboxides that obtain Good structure property basis is provided.
In order to solve the above technical problems, the technical solution adopted by the present invention is as follows:
A kind of continuous casting and rolling process for production of 5356 aluminum alloy welding bar, the production technology include the following steps:
(1) melting:Aluminium ingot is put into aluminum melting by the melting of a aluminium ingots and its alloying according to the aluminium ingot addition designed by dispensing Stove, smelting temperature are 730-750 DEG C, and aluminum melt is transferred to from aluminium melting furnace in holding furnace by aluminium material after being completely melt, according to design Intermediate alloy addition sequentially adds intermediate alloy while stirring to holding furnace;
B to after alloying in holding furnace melt degasification, clean, skim, cover, keep the temperature standing etc. purified treatments, specifically Refining route is:Injection refining and bottom blowing high-purity N2Or Ar2Refining, refining aluminium fusant use coverture uniform fold after skimming, so Afterwards to aluminum melt fast analyzing constituent, aluminum melt ingredient is adjusted according to analysis result, is by interior burning in holding furnace Temperature is adjusted to 720 DEG C~740 DEG C by system, in high-purity N2Or Ar2Protection under aluminum melt heat preservation stand 30-35 minutes;
(2) online processing, the warm stove of aluminium alloy melt, which fascinates, to be released, and hello silk system online is flowed successively through by releasing chute System, online off gas system, ceramic filter system;
(3) continuously casting, aluminium alloy melt after online processing flow successively through upper casting ladle through chute, intermediate casting ladle, finally Conticaster is poured by lower casting ladle level and carries out continuously casting aluminium alloy wire bar;
(4) continuous rolling, aluminium alloy wire bar enter active front haulage machine under the guiding of access bridge, and active front haulage machine is led Draw lower feeding slitting mill and cut off wire bar material head, through straightener alignment, frequency multiplication sensing heating stove heat, again by active feeding mechanism general Aluminium alloy wire bar is sent into Continuous mill train and carries out tandem rolling, and aluminium alloy line bar is made;
(5) line bar draws bar water quenching system by oil-free, and the speed with cooling velocity higher than 100 DEG C/min is cooled to 100 DEG C, Under the action of in rear haulage and continuously around lever system, double frames are put away sports equipment in rolls, and bundle rolls into disk.
Preferably, the chemical composition of the 5356 aluminum alloy welding bar and its percentage composition are as follows:Si 0.25%, Fe 0.4%, Cu 0.1%, Mg 4.5-5.5%, Zn 0.1%, Ti 0.06-0.1%, Mn 0.05-0.2%, Cr 0.05- 0.2%, surplus Al.
Preferably, the purity of melting aluminium ingot is 99.90% in the step (1), during the aluminum melt alloying is used Between alloy be Al-20%Cr, Al-20%Mn.
Preferably, purifying aluminium alloy melt uses refining agent for 45-55%KCl, 20-30%K in the step (1)2CO3、 10-15%AlF3, 5-15%C2Cl6, 10-15%LiCl uniform mixed powder.
Preferably, step (1) the midsole nitrogen blowing refining time is 25-35 minute, the purity of nitrogen is 99.999%, Pressure is 0.4-0.6MPa, and the aluminium alloy melt heat preservation time of repose is 30-35 minutes.
Preferably, the Al-5%Ti-1%B aluminium alloy line bars that silk is Φ 9.5 are fed in the step (2) online;The ceramics Filtering uses 50mm thickness, hole density for the twin-stage foamed ceramic filter plate of 60ppi;The online off gas system is filled with heating It sets.
Preferably, casting parameters are as follows in the step (3):
Cast temperature:710-720℃;
Cast cooling water temperature:30℃;
Casting speed:8-9m/min.
The 5356 strand cross sections product of the above continuous casting process production is 2000-2400mm2;The a diameter of Φ 1500- of copper wheel 1800mm;
Preferably, continuous rolling process parameter is as follows in the step (4):
Enter to roll temperature:480-530℃;
Finishing temperature:340-460℃;
Enter to roll speed:11.5-13.8m/min
Finish to gauge speed:5.3-6.4m/s;
Emulsion temperature:60-65℃;
Concentration of emulsion used:20-25%;
Emulsify flow quantity:20-50L/min;
Rolling pass is distributed:13-14 passages;
Yield:3.7-4.5T/h;
5356 aluminum alloy welding bar sizes of the above continuous rolling process production are Φ 9.5mm.
The advantageous effect of technical solution using the present invention is:
1, by the composition design to 5356 aluminum alloy welding bars, the content of alloying element is controlled, is regulated and controled between each element Optimum Matching, to ensure the quality of alloy.
2, the temperature control of each node is to realize the core technology of high quality aluminium bar, in this regard, 5356 aluminium alloy smelting temperature Degree is 730-750 DEG C, 720-740 DEG C of refining temperature, and filtration temperature is 710-720 DEG C.
3, the aluminum melt twin-stage of online degasification and optimization outside the furnace refining, special stove based on no sodium solvent+halide Ceramic filter purifies the advanced purification techniques of technique, to reduce oxide inclusion and hydrogen content, controls hydrogen content≤0.12ml/ 100gAl。
4, the present invention produces 5356 aluminum alloy welding bars using continuous casting and rolling method, and chief technology embodies as follows:Casting Temperature:710-720℃;Cast cooling water temperature:30℃;Casting speed:8-9m/min;Enter to roll temperature:480-530℃;Finish to gauge Temperature:340-460℃;Enter to roll speed:11.5-13.8m/min, finish to gauge speed:5.3-6.4m/s;Emulsion temperature:60-65 ℃;Concentration of emulsion used:20-25%;Emulsify flow quantity:20-50L/min.Rolling pass is distributed:2000-2400mm2Strand warp 5356 aluminum alloy welding bars of the 13-14 passes to Φ 9.5mm.
By continuous casting cooling water constant temperature technology, roll temperature control technique, tandem rolling emulsion constant temperature technology etc. ensure finishing temperature Between 340-460 DEG C, and the 5356 aluminum alloy welding bars of Φ 9.5mm are carried out with speed of the cooling velocity higher than 100 DEG C/min Water quenching,
The 5356 aluminum alloy welding bars of Φ 9.5mm produced according to this technique, mechanical property are:Tensile strength 295- 320MPa, elongation 18-20%.
To sum up, the 5356 aluminum alloy welding bars that casting and rolling process proposed by the present invention is produced, by Controlled Rolling And Controlled Cooling, Be mingled with subsequently to obtain low hydrogen-suboxides -5356 aluminium alloy welding wires of surface-brightening-stable quality provide good structure property Basis.And continuous casting and rolling method can realize the molding of disposable weight aluminum alloy welding bar, and then connector when welding can be reduced, it keeps away Exempt to decline phenomenon because of performance caused by welding point.Solve the problems, such as the Quality of Final Welding Wire difference that China is produced and unstable, band Come certain theory value and social benefit.
Description of the drawings
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the overall structure diagram that continuous-casting continuous-rolling method of the present invention prepares 5356 aluminum alloy welding bars;
Fig. 2 is the process flow chart that continuous-casting continuous-rolling method of the present invention prepares 5356 aluminum alloy welding bars.
In figure:In figure:1, vertical melting furnace;2, turn of tidal stream chute;3, holding furnace;4, chute is released;5, silk is fed online;6, exist Line depassing unit;7, ceramic filter system;8, casting on flat system;9, conticaster;10, aluminium alloy wire bar, 11, access bridge;12, main Dynamic front haulage;13, waste material is cut;14, straightener;15 frequency multiplication heating furnaces;16 drawing-in devices;17 Continuous mill trains;18 quenching on line fill It sets;19 winding systems;20, at disk aluminum alloy welding lead screw.
Specific implementation mode
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with Illustration illustrates the basic structure of the present invention, therefore it only shows the composition relevant to the invention.
It is melted being put into vertical aluminium melting furnace 1 according to the good aluminium ingot of burdening calculation, smelting temperature is 730 DEG C~750 DEG C, when in vertical aluminium melting furnace 1 aluminium material thawing finish, by the aluminum melt in vertical aluminium melting furnace 1 through turn of tidal stream chute 2 import holding furnace 3 It is interior, aluminum melt alloying is completed in the holding furnace 3, to after alloying in holding furnace melt degasification, clean, skim, coverture The purified treatments such as covering, heat preservation standing, keep the temperature the aluminum melt after standing, are released, put from holding furnace by chute 4 is released It flows in chute 4 after line feeds silk 5, aluminum melt successively flows through the online off gas system 6 for being connected on back and ceramic mistake through chute successively Filter system 7, aluminum melt by 8 level of casting on flat system by after line degasification and ceramic filter, being poured into conticaster 9 and being connected Continuous casting, is made aluminium alloy wire bar 10 under the cooling effect of cooling water;Conticaster picks brilliant device by aluminium alloy wire bar from conticaster Upper disengaging, aluminium alloy wire bar enter active front haulage machine 12 under the guiding of access bridge 11, are sent under the traction of active front haulage machine Waste material cuts 13 and cuts off wire bar material head, is straightened through straightener 14, frequency multiplication induction heater 15 heats, again will by active feeding mechanism 16 Aluminium alloy wire bar is sent into Continuous mill train 17 and carries out tandem rolling, and aluminium alloy line bar is made;Aluminium alloy line bar passes through quenching on line device 18 At disk aluminum alloy welding lead screw 20 under the action of 19 winding system after cooling.
Continuous-casting continuous-rolling method prepares 5356 aluminum alloy welding bars and is as follows:
Embodiment 1
Product chemical composition
(1) melting:Aluminium melting furnace is added in the aluminium ingot that 8 tons of percentage compositions are Al99.90% by the melting of a aluminium ingots and its alloying, Smelting temperature is 750 DEG C, and aluminum melt is transferred to from aluminium melting furnace in holding furnace by aluminium material after being completely melt, according to the intermediate alloy of design Addition sequentially adds intermediate alloy while stirring to holding furnace.Cr, Mn are with intermediate alloy Al-20%Cr, the shape of Al-20%Mn Formula is added.
B to after alloying in holding furnace melt degasification, clean, skim, cover, keep the temperature standing etc. purified treatments.Specifically Refining route is:Injection refining and bottom blowing high-purity N2Or Ar2Refining.Refining aluminium fusant uses coverture uniform fold after skimming, so Afterwards to aluminum melt fast analyzing constituent, aluminum melt ingredient is adjusted according to analysis result, is by interior burning in holding furnace Temperature is adjusted to 730 DEG C by system, in high-purity N2Or Ar2Protection under aluminum melt heat preservation stand 30-35 minutes;
The purifying aluminium alloy melt uses refining agent for 45%KCl, 20%K2CO3, 10%AlF3, 15%C2Cl6, 10% The uniform mixed powder of LiCl, the bottom blowing nitrogen refining time are 30 minutes, and the purity of nitrogen is 99.999%, pressure 0.4- 0.6MPa, the aluminium alloy melt heat preservation time of repose is 30 minutes.
(2) online processing, the warm stove of aluminium alloy melt, which fascinates, to be released, and hello silk system online is flowed successively through by releasing chute System, online off gas system, ceramic filter system.
The online Al-5%Ti-1%B aluminium alloy line bars fed silk and be adopted as Φ 9.5;The ceramic filter uses 50mm Thick, hole density is the twin-stage foamed ceramic filter plate of 60ppi;The online off gas system carries heating device, avoids aluminum melt Temperature reduces.
(3) continuously casting, aluminium alloy melt after online processing flow successively through upper casting ladle through chute, intermediate casting ladle, finally Conticaster is poured by lower casting ladle level and carries out continuously casting aluminium alloy wire bar.
The cast temperature is 720 DEG C, casts 30 DEG C of cooling water temperature, casting speed 8m/min, copper wheel and steel band are formed Cavity cross-sectional area be 2000mm2, a diameter of Φ 1500mm of copper wheel.
(4) continuous rolling, aluminium alloy wire bar enter active front haulage machine under the guiding of access bridge, and active front haulage machine is led Draw lower feeding slitting mill and cut off wire bar material head, through straightener alignment, frequency multiplication sensing heating stove heat, again by active feeding mechanism general Aluminium alloy wire bar is sent into Continuous mill train and carries out tandem rolling, and aluminium alloy line bar is made;
The continuous rolling, enters to roll 510 DEG C of temperature, and 390 DEG C of finishing temperature enters to roll speed 13.8m/min, finish to gauge speed The technique of 6.4m/s, emulsion temperature 60 C, concentration of emulsion used 20%, emulsification flow quantity 20L/min are arrived by 13 passage tandem rollings The 5356 aluminum alloy welding bars of Φ 9.5mm,
(5) bar water quenching system is drawn by oil-free, the speed with cooling velocity higher than 100 DEG C/min is cooled to 100 DEG C, rear Traction and continuously under the action of lever system, double frames are put away sports equipment in rolls, are tied and are rolled into disk, yield 4.5T/h.
The 5356 aluminium alloy welding wires line bar mechanical property of Φ 9.5mm:Tensile strength 298MPa, elongation 19.8%.
Embodiment 2
Product chemical composition
Smelting technology is the same as embodiment 1.
Continuous casting and rolling:Using 720 DEG C of cast temperature, 30 DEG C, casting speed 8m/min of cooling water temperature, copper wheel and steel are cast Cross-sectional area with the cavity formed is 2200mm2, a diameter of Φ 1600mm of copper wheel.
Then it uses to enter to roll 510 DEG C of temperature, 390 DEG C of finishing temperature enters to roll speed 11.5m/min, finish to gauge speed 5.95m/ S, emulsion temperature 60 C, concentration of emulsion used 20%, the technique of emulsification flow quantity 20L/min is by 13 passage tandem rollings to Φ The 5356 aluminum alloy welding bars of 9.5mm, draw bar water quenching system by oil-free, and the speed with cooling velocity higher than 100 DEG C/min cools down To 100 DEG C, under rear haulage and continuous around rod systemic effect, double frames are put away sports equipment in rolls, and bundle rolls into disk, yield 4.1T/h.
The 5356 aluminum alloy welding bar mechanical properties of Φ 9.5mm:Tensile strength 311MPa, elongation 19.2%.
Embodiment 3
Product chemical composition
Smelting technology is the same as embodiment 1.
Continuous casting and rolling:Using 720 DEG C of cast temperature, 30 DEG C of cooling water temperature, casting speed 8m/min copper wheels and steel are cast Cross-sectional area with the cavity formed is 2200mm2, a diameter of Φ 1800mm of copper wheel.
Then it using to enter to roll 510 DEG C of temperature, 390 DEG C of finishing temperature enters to roll speed 11.5m/min, finish to gauge speed 5.3m/s, Emulsion temperature 60 C, concentration of emulsion used 20%, the technique of emulsification flow quantity 20L/min is by 14 passage tandem rollings to Φ 9.5mm 5356 aluminum alloy welding bars, bar water quenching system is drawn by oil-free, 100 are cooled to higher than the speed of 100 DEG C/min with cooling velocity DEG C, under rear haulage and the effect of continuous around rod machine, double frames are put away sports equipment in rolls, and bundle rolls into disk, yield 3.7T/h.
The 5356 aluminum alloy welding bar mechanical properties of Φ 9.5mm:Tensile strength 315MPa, elongation 18.1%.
1, by the composition design to 5356 aluminum alloy welding bars, the content of alloying element is controlled, is regulated and controled between each element Optimum Matching, to ensure the quality of alloy.
2, the temperature control of each node is to realize the core technology of high quality aluminium bar, in this regard, 5356 aluminium alloy smelting temperature Degree is 730-750 DEG C, 720-740 DEG C of refining temperature, and filtration temperature is 710-720 DEG C.
3, the aluminum melt twin-stage of online degasification and optimization outside the furnace refining, special stove based on no sodium solvent+halide Ceramic filter purifies the advanced purification techniques of technique, to reduce oxide inclusion and hydrogen content, controls hydrogen content≤0.12ml/ 100gAl。
4, the present invention produces 5356 aluminum alloy welding bars using continuous casting and rolling method, and chief technology embodies as follows:Casting Temperature:710-720℃;Cast cooling water temperature:30℃;Casting speed:8-9m/min;Enter to roll temperature:480-530℃;Finish to gauge Temperature:340-460℃;Enter to roll speed:11.5-13.8m/min, finish to gauge speed:5.3-6.4m/s;Emulsion temperature:60-65 ℃;Concentration of emulsion used:20-25%;Emulsify flow quantity:20-50L/min.Rolling pass is distributed:2000-2400mm2Strand warp 5356 aluminum alloy welding bars of the 13-14 passes to Φ 9.5mm.
By continuous casting cooling water constant temperature technology, roll temperature control technique, tandem rolling emulsion constant temperature technology etc. ensure finishing temperature Between 340-460 DEG C, and the 5356 aluminum alloy welding bars of Φ 9.5mm are carried out with speed of the cooling velocity higher than 100 DEG C/min Water quenching,
The 5356 aluminum alloy welding bars of Φ 9.5mm produced according to this technique, mechanical property are:Tensile strength 295- 320MPa, elongation 18-20%.
To sum up, the 5356 aluminum alloy welding bars that casting and rolling process proposed by the present invention is produced, by Controlled Rolling And Controlled Cooling, Be mingled with subsequently to obtain low hydrogen-suboxides -5356 aluminium alloy welding wires of surface-brightening-stable quality provide good structure property Basis.And continuous casting and rolling method can realize the molding of disposable weight aluminum alloy welding bar, and then connector when welding can be reduced, it keeps away Exempt to decline phenomenon because of performance caused by welding point.Solve the problems, such as the Quality of Final Welding Wire difference that China is produced and unstable, band Come certain theory value and social benefit.
It is enlightenment with above-mentioned desirable embodiment according to the present invention, through the above description, relevant staff is complete Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention Property range is not limited to the contents of the specification, it is necessary to determine its technical scope according to right.

Claims (8)

1. a kind of continuous casting and rolling process for production of 5356 aluminum alloy welding bar, it is characterised in that:The production technology includes following step Suddenly:
(1) melting:Aluminium ingot is put into aluminium melting furnace by the melting of a aluminium ingots and its alloying according to the aluminium ingot addition designed by dispensing, is melted It is 730-750 DEG C to refine temperature, and aluminum melt is transferred to from aluminium melting furnace in holding furnace by aluminium material after being completely melt, intermediate according to design closes Golden addition sequentially adds intermediate alloy while stirring to holding furnace;
B to after alloying in holding furnace melt degasification, clean, skim, cover, keep the temperature the purified treatments such as standing, it is specific to refine Mode is:Injection refining and bottom blowing high-purity N2Or Ar2Refining, refining aluminium fusant use coverture uniform fold after skimming, then right Aluminum melt fast analyzing constituent is adjusted aluminum melt ingredient according to analysis result, will by combustion system in holding furnace Temperature is adjusted to 720 DEG C~740 DEG C, in high-purity N2Or Ar2Protection under aluminum melt heat preservation stand 30-35 minutes;
(2) online processing, the warm stove of aluminium alloy melt, which fascinates, to be released, and hello silk system online is flowed successively through by releasing chute, Line off gas system, ceramic filter system;
(3) continuously casting, the aluminium alloy melt after online processing flow successively through upper casting ladle, intermediate casting ladle, finally under through chute Casting ladle level pours into conticaster and carries out continuously casting aluminium alloy wire bar;
(4) continuous rolling, aluminium alloy wire bar enters active front haulage machine under the guiding of access bridge, under the traction of active front haulage machine It is sent into slitting mill and cuts off wire bar material head, through straightener alignment, frequency multiplication sensing heating stove heat, by active feeding mechanism closed aluminium again Gold thread ingot is sent into Continuous mill train and carries out tandem rolling, and aluminium alloy line bar is made;
(5) line bar draws bar water quenching system by oil-free, and the speed with cooling velocity higher than 100 DEG C/min is cooled to 100 DEG C, rear Traction and continuously under the action of lever system, double frames are put away sports equipment in rolls, are tied and are rolled into disk.
2. a kind of continuous casting and rolling process for production of 5356 aluminum alloy welding bar according to claim 1, it is characterised in that:It is described The chemical composition and its percentage composition of 5356 aluminum alloy welding bars are as follows:Si 0.25%, Fe 0.4%, Cu 0.1%, Mg 4.5- 5.5%, Zn 0.1%, Ti 0.06-0.1%, Mn 0.05-0.2%, Cr 0.05-0.2%, surplus Al.
3. a kind of continuous casting and rolling process for production of 5356 aluminum alloy welding bar according to claim 1, it is characterised in that:It is described The purity of melting aluminium ingot is 99.90% in step (1), and intermediate alloy used in the aluminum melt alloying is Al-20%Cr, Al-20%Mn.
4. a kind of continuous casting and rolling process for production of 5356 aluminum alloy welding bar according to claim 1, it is characterised in that:It is described Purifying aluminium alloy melt uses refining agent for 45-55%KCl, 20-30%K in step (1)2CO3, 10-15%AlF3, 5-15% C2Cl6, 10-15%LiCl uniform mixed powder.
5. a kind of continuous casting and rolling process for production of 5356 aluminum alloy welding bar according to claim 1, it is characterised in that:It is described Step (1) midsole nitrogen blowing refining time is 25-35 minutes, and the purity of nitrogen is 99.999%, pressure 0.4-0.6MPa, institute It is 30-35 minutes to state aluminium alloy melt heat preservation time of repose.
6. a kind of continuous casting and rolling process for production of 5356 aluminum alloy welding bar according to claim 1, it is characterised in that:It is described The Al-5%Ti-1%B aluminium alloy line bars that silk is Φ 9.5 are fed in step (2) online;The ceramic filter thick, Kong Mi using 50mm Degree is the twin-stage foamed ceramic filter plate of 60ppi;The online off gas system carries heating device.
7. a kind of continuous casting and rolling process for production of 5356 aluminum alloy welding bar according to claim 1, it is characterised in that:It is described Casting parameters are as follows in step (3):
Cast temperature:710-720℃;
Cast cooling water temperature:30℃;
Casting speed:8-9m/min;
The 5356 strand cross sections product of the above continuous casting process production is 2000-2400mm2;The a diameter of Φ 1500- of copper wheel 1800mm。
8. a kind of continuous casting and rolling process for production of 5356 aluminum alloy welding bar according to claim 1, it is characterised in that:It is described Continuous rolling process parameter is as follows in step (4):
Enter to roll temperature:480-530℃;
Finishing temperature:340-460℃;
Enter to roll speed:11.5-13.8m/min
Finish to gauge speed:5.3-6.4m/s;
Emulsion temperature:60-65℃;
Concentration of emulsion used:20-25%;
Emulsify flow quantity:20-50L/min;
Rolling pass is distributed:13-14 passages;
Yield:3.7-4.5T/h;
5356 aluminum alloy welding bar sizes of the above continuous rolling process production are Φ 9.5mm.
CN201810126651.3A 2018-02-08 2018-02-08 A kind of continuous casting and rolling process for production of 5356 aluminum alloy welding bar Pending CN108300913A (en)

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CN110014245A (en) * 2019-05-07 2019-07-16 哈焊所华通(常州)焊业股份有限公司 A kind of rail traffic aluminium alloy gas shield welding wire and bar technique processed
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Publication number Priority date Publication date Assignee Title
CN109487100A (en) * 2018-11-29 2019-03-19 长江师范学院 A kind of cond aluminium bar continuous casting and tandem rolling and borax treatment method and device
CN110014245A (en) * 2019-05-07 2019-07-16 哈焊所华通(常州)焊业股份有限公司 A kind of rail traffic aluminium alloy gas shield welding wire and bar technique processed
CN110102573A (en) * 2019-06-06 2019-08-09 四川久勋科技有限公司 A kind of aluminium bar continuous casting and rolling production line
CN110340162A (en) * 2019-06-06 2019-10-18 铜陵精迅特种漆包线有限责任公司 A kind of aluminium bar production system
CN111112875A (en) * 2019-12-31 2020-05-08 上海交通大学 Containing TiB2Granular aluminum alloy welding wire and preparation method thereof
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
CN111041296A (en) * 2020-02-17 2020-04-21 云南铝业股份有限公司 Method for producing phi 2.6mm5356 aluminum alloy welding wire by adopting non-annealing process
CN111041296B (en) * 2020-02-17 2021-09-03 云南铝业股份有限公司 Method for producing phi 2.6mm5356 aluminum alloy welding wire by adopting non-annealing process

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