CN100374612C - Process and apparatus for continuous producing double-metal thin plate, thin band by atomized metal ejection - Google Patents
Process and apparatus for continuous producing double-metal thin plate, thin band by atomized metal ejection Download PDFInfo
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- CN100374612C CN100374612C CNB2005101325196A CN200510132519A CN100374612C CN 100374612 C CN100374612 C CN 100374612C CN B2005101325196 A CNB2005101325196 A CN B2005101325196A CN 200510132519 A CN200510132519 A CN 200510132519A CN 100374612 C CN100374612 C CN 100374612C
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Abstract
The present invention relates to a technology and equipment for continuously producing double-metal thin plates and thin bands by atomized metal ejection, which belong to the field of metallurgy. The equipment of the present invention is characterized in that nozzles are arranged above two rollers horizontally placed; water can be injected in each of the rollers for cooling; both side faces above a roller gap of each of the rollers is respectively provided with a side seal plate. After fluent metal flow is crushed by the air current of high-speed inert gases in the atomizing nozzles, the fluent metal flow forms dispersed metal granules which are in a semi-solidified state and are jet between a pre-tightening and preprocessed metal mother band and one of the rollers, wherein the pre-tightening and preprocessed metal mother band passes round the other roller; owing to the characteristic that the deposited metal granules are easy to be combined with the mother band at high temperature, the deposited metal granules can firmly adhere to the mother band. Double metal which is composed of the mother band and deposited metal is further combined under the action of the rolling force of the rotation of the two rollers; a good double-metal thin plate (band) is formed. The present invention has the advantages of short technical process and compact equipment structure; after jetting, the directly rolled and produced double-metal thin plate (band) has the advantages of high bond strength, small rolling force, low energy consumption, etc.
Description
One, technical field
The present invention relates to a kind of metal atomization and spray continuous production bimetal thin plate, strip Processes and apparatus, belong to field of metallurgy.
Two, background technology
Compoundization of metallic substance and functionalization are new millennium metallic substance main development tendency.Ply-metal (band) is the novel metal matrix material that will be combined by two kinds of metallic substance with suitable performance by temperature and pressure.It can give full play to the performance speciality of each component by design requirements, and satisfies modern industry to the multiple performance demands of material with its engineering property such as mechanics, physics, chemistry such as high-strength, wear-resisting, against corrosion.Single metal sheet is incomparable with it.Double metallic composite material can play effects such as measurement, overload protection and mechanism's adjusting, has been widely used in fields such as aviation, instrument, electromechanics, household electrical appliances, and will have replaced traditional single metal material in a large number, becomes the fresh combatants of modern material.
The main production method of ply-metal (band) material is admittedly-solid phase is compound, and as the solid phase composite rolling, roll compacting, explosion is rolling etc.These solid-solid phase complex methods are owing to exist operation many, and installed capacity is big, and problem such as the product lumber recovery is low, restricted the application of composite metal plate (band) material.Employing is hot, cold depresses rolling greatly and diffusion annealing process (compression method), is difficult to produce the high metal sheet (band) of alloy content, because in castingprocesses, very easily produces component segregation and cracking; More easy to crack in the operation of rolling.In addition, adopt compression method to make two metal plates (band), though adopted diffusion annealing process, the bonding force of the two is still strong inadequately, complex process, and productivity is low.For this reason, new more economical more advanced production technique is all being sought in countries in the world, to advance the development of composite metal plate (band).
By " the rolling ply-metal of liquid-solid phase " technology of professor Cui Jianzhong of Northeast China university research and development, compare with the solid-solid phase rolling composite plate that generally adopts both at home and abroad, have clear superiority.This technology is with metal hot dipping and rolling casting technology combination dexterously, utilizes the high diffusibility of liquid metal and high pressure when rolling, makes material realize metallurgical binding.It enter the ply-metal production field, but two kinds of metals is the relations of coating with advantages such as low input, high production, low cost, high benefit, casual labourer's preface, high combined strength bination and good quality production quality.
Spray forming technology is an emerging advanced metallurgical processing technology, this technology can be produced high alloy or superelevation alloy material, and this class material that can overcome common process preparation very easily produces macrosegregation in casting, in the operation of rolling material fatal shortcoming of rimose very easily; Not only homogeneous microstructure is tiny for the material that obtains, no macrosegregation, and also have good processing properties.
The material that just is being based on the spray forming technology preparation is in the advantage that is had aspect microstructure and the follow-up deformation processing, the Singer that proposes reaction-injection moulding thought at first teaches in the patent (U.S. Patent number: 4 of invention in 1986,579,168) technology of related production metal strip, different with the mode of above-mentioned straight spray-horizontal drawstring.Its technological process is: atomization metal is directly injected between the roll gap of water-cooled roll of two horizontal positioned, under the effect of roll backwards rotation rolling load, is formed monometallic band (plate) by hot compaction.The characteristics of this patent are that rolling stress is less, but only are used to make monometallic band (plate), and require the atomization metal eject position must be directly over the roll gap of two rollers.
The patent No. is the mode that technology that 4,420,441 United States Patent (USP) provides also adopts straight spray-horizontal drawstring, has the two-phase of different melting points or the metal sheet band of heterogeneous composition (plate) with production.This technological process: when low-melting body material (as aluminium) is atomized, the dystectic second phase particle (as iron) introduce wherein form compound mutually after, deposit on the base band that is positioned at the below, by vertical placement but to depart from the double-roll rolling mill of atomization metal eject position equally rolling, realize that preparation has the purpose of the monometallic band (plate) of two-phase or polyphase structure again.As seen, described patent can only the manufacture order metal belt plate, and exists structure to owe the shortcoming compact and increase of rolling deformation stress.
The patent of people such as Watson invention (U.S. Patent number: 4,961,457) adopt the mode of spray-horizontal drawstring directly and track type transmission, on the base band that deposits to behind the metal atomization by the crawler belt transmission, realize that the preparation copper-based in-situ reacts the purpose of composite material tape.The characteristics of this technology are the Al that adds 0.1-0.5% weight in copper base alloy, Si, Ti, Cr, Zr or their mixture, these elements easily with atomizing with the nitrogen reaction and form tiny nitride, and disperse is distributed in the body material, this copper base composite alloy that obtains by reaction in forms composite material tape through being deposited on after the gas atomization to receive on the base band.The maximum deficiency of this patent is the existing space of metal strip itself that obtains owing to can not be in time rolling and can't make up, thereby influences its bonding strength.
Singer teaches and has invented combine with the double-roll rolling mill technology of explained hereafter metal compound belt (plate) of jet deposition of utilizing in 1973.This technical patent (U.S. Patent number: 3,775,156), adopt the directly mode of spray-horizontal drawstring.The metal with different densities that at first will come from two different ladle containers atomizes, deposit to then and be positioned at the below through on the Metal belt of preheating, it is rolling to pass through the vertical double-roll rolling mill of placing with the motion of braces again, form metal compound belt (plate), and utilize common method that it further is processed into bearing shell.Two ladle containers of this arts demand, and the different metal that requires two ladle containers to be equipped with is that difficulty is dissolved each other or partial miscibility in liquid state; In addition, because being used for rolling double-roll rolling mill departs from the atomization metal eject position, make bimetallic composite band when entering mill roll-gap, be in solid-state owing to the settled layer metal on the braces has experienced long cooling time, its result obviously increases rolling stress, and it is in time rolling owing to not obtaining to spray metal level and master tape, and the bonding force of the two is not enough and easy to crack.In addition, this patent is not provided with side seal mechanism between injection and braces, and the partly atomized molten drop will slip by to two edges of braces, can cause the low problem of recovery rate of edge quality, shape difference and the metal of settled layer.This shows that this patent has that structure owes compact, the settled layer metal cools time is long and causes bimetallic junction to make a concerted effort poor and rolling deformation is difficult and recovery rate of iron is low, the deficiency of quality of edges difference.
Three, summary of the invention
The technical problem that the present invention solves is: the explained hereafter flow process is short, compact equipment, product recovery rate height, rolling load is little, and the bimetal that obtains has a kind of metal atomization injection continuous production bimetal thin plate, the strip Processes and apparatus of excellent metallurgical combination and quality of edges
Technical solution of the present invention:
The present invention includes nozzle, two Rolling roller, master tape, nozzle places the top of two rolls of two horizontal positioned, but roll inside water flowing cooling, the two sides of top, roller gap crack are provided with side seal board, and the master tape that sprays rolling bimetal thin plate or band is by two Rolling rollers and pay-off roll or helps pay-off roll pre-tensioned.
Can adopt a plurality of nozzle placement of a row.
Can use a flat single nozzle;
Can adopt a scan-type nozzle or a plurality of scan-type nozzle.
Described atomizing nozzle can place two Rolling roller gaps directly over or upper right side and spraying on master tape.
Described master tape part looping is therein on roll.
Described master tape is through processing of rust removing and thermal pretreatment.
Metal atomization sprays continuous production bimetal thin plate, strip technology, and processing step is as follows:
1) preparation of liquid alloy: smelting is sprayed metal, and superheating temperature is controlled between 50～200 ℃;
2) preparation of master tape: master tape is hot rolling winding or cold rolling winding;
3) master tape is carried out uncoiling and smooth processing;
A) scrubbing: the greasy dirt of removing the master tape surface;
B) remove zone of oxidation: employing shot-peening or sandblast or other mechanical treatment mode are removed the zone of oxidation on the master tape;
C) master tape heating: by to the master tape heating process to it below solidus temperature between 50～250 ℃, with further raising master tape and spray bonding force between the layer.
4) master tape carries out tensioning to master tape and walks around a roll rotation by helping winding up roller, with master tape be transported to two horizontal positioned roll and between;
5) high velocity air from the atomizing nozzle ejection is broken into tiny metallic particles with liquid metal;
6) metallic particles is cooled off in motion gradually with high velocity air, and formation sprays layer in the zone that surrounds through the master tape of surface treatment and preheating and another roll and side seal mechanism spraying with higher speed under the semi-solid state situation;
7) spray master tape and the Rolling roller motion of layer, by the Rolling roller of two backwards rotation with preheating;
8) master tape with preheating is rolled with the bimetal that sprays layer composition, forms the bimetal thin plate or the band of good combination;
9) again bimetal thin plate or band are carried out subsequent heat treatment, rolling, spray cooling, batch rolling by helping volume to enter into reeling machine.
10) can continuous production bimetal thin plate or band by above-mentioned steps.
The present invention combines reaction-injection moulding, the continuous rolling of multiple nozzle and the advantage of setting up side seal mechanism in two Rolling roller roll gap both sides, adopts injection-compound-rolling technology mode of finishing simultaneously at same station, prepares bimetal thin plate (band).The present invention has compact construction, and bonding strength height, the surface quality of the bimetal thin plate (band) of production is excellent, quality of edges good, recovery rate is high, rolling load is low and can continuous production bimetal thin plate characteristics such as (bands).
Major advantage of the present invention is:
Can continuous production bimetal thin plate (band);
Technical process is short, compact equipment;
Be rolled immediately after spraying;
Rolling load stress is less;
The bimetal thin plate (band) that obtains has high bonding strength;
Spray the recovery rate of iron height;
Bimetal thin plate (band) quality of edges is good;
Technology is easy to control.
Four, description of drawings
Fig. 1 is for spraying rolling bimetal thin plate strip continuous structure synoptic diagram;
Fig. 2 sprays bimetal thin plate strip process schematic representation for rolling section;
Fig. 3 sprays bimetal thin plate strip process schematic representation for horizontal section;
Fig. 4 is for spraying the full process program synoptic diagram of rolling bimetal thin plate strip.
Five, embodiment
Described atomizing nozzle can place two Rolling roller gaps directly over and spray on master tape 11.
Processing step is as follows:
1) preparation of liquid alloy: smelting is sprayed metal, and superheating temperature is controlled between 50～200 ℃;
2) preparation of master tape: master tape 11 is hot rolling winding or cold rolling winding;
3) master tape 11 is carried out uncoiling and smooth processing;
A) scrubbing: the greasy dirt of removing master tape 11 surfaces;
B) remove zone of oxidation: employing sandblast 12 or other mechanical treatment mode are removed the zone of oxidation on the master tape 11;
C) master tape heating: by to the heating process 13 of master tape 11 to it below solidus temperature between 50～250 ℃, with further raising master tape and the bonding force that sprays between layers 3.
4) master tape 11 carries out tensioning to master tape 11 and walks around a roll rotation by helping winding up roller, master tape 11 is transported between the roll 4 and 41 of two horizontal positioned;
5) high velocity air from atomizing nozzle 1 ejection is broken into tiny metallic particles 2 with liquid metal;
6) metallic particles 2 is cooled off in motion gradually with high velocity air, sprays layers 3 spraying with higher speed under the semi-solid state situation to form in the zone that surrounds through the master tape 14 of surface treatment and preheating and another roll and side seal mechanism;
7) spray master tape 14 and the Rolling roller motion of layer 3, by the Rolling roller 4 and 41 of two backwards rotation with preheating;
8) master tape 14 with preheating is rolled with the bimetal that sprays layer 3 composition, forms the bimetal thin plate of good combination or is with 5;
9) again to the bimetal thin plate or be with 5 to carry out subsequent heat treatment 6, rolling 7, spray cooling 8, batch rolling by helping volume 9 to enter into reeling machine 10.
10) get final product continuous production bimetal thin plate or be with 5 by above-mentioned steps.
The present invention carries out preheating again by after the master tape volume is carried out uncoiling and sandblast or shot-peening pre-treatment earlier, then by helping winding up roller that master tape is carried out tensioning and walking around a roll rotation, realizes master tape is transported between the roll of two horizontal positioned.
The mode that atomization metal sprays can adopt foggyization nozzle to implement simultaneously to spray, and by each intersection of spraying the garden, is implemented in the purpose that can spray second kind of metal (or alloy) on the master tape more equably; Or adopt single atomizing scan nozzle or a plurality of atomizing scan nozzle, along spraying, be implemented in the purpose that sprays second kind of metal (or alloy) on the master tape equably perpendicular to the scan-type on the master tape working direction; Or, be implemented in the purpose that sprays second kind of metal (or alloy) on the master tape equably by the spraying of flat partially nozzle.
After the atomizing nozzle atomizing of the two Rolling rollers top of liquid metal by being positioned at horizontal positioned, form high-speed motion, partly solidify the molten drop of attitude.These molten drops deposit on the metal master tape, have very high temperature, and under the effect of two rolling system power, the metal master tape is formed excellent metallurgical with the high temperature deposition metal level by hot compaction and combines.Because master tape is preheated and deposits metal level on it and is in and partly solidifies attitude, thereby the bimetal that forms thus is by rolling, and its bonding strength is more much higher than the bimetallic strip that adopts conventional bimetal thin plate compression method to make.This is because the spray deposition metal is in the composite deposition process of just having finished under half curdled appearance with master tape, and the homogeneous microstructure that sprays metal is tiny, have good ductility, rolling through under hot timely again simultaneously, the metallurgical binding of the double metallic composite material of Xing Chenging is very good thus; Owing to realized rollingly under high-temperature very, rolling load is less.In addition, side seal mechanism is set, slips by to both sides and reduce the recovery rate of metal to reduce or eliminate trickle metallic particles, and can improve the quality of edges of bimetallic strip in the both sides of two rollers.
The method of spraying comprises:
Foggyization nozzle is implemented the method for spraying simultaneously, and by each reasonable intersection of spraying the garden, realization can spray second kind of metal (or alloy) more equably;
The scan-type of single atomizing nozzle or foggyization nozzle sprays method, to realize spraying second kind of metal (or alloy) more equably;
The method that sprays of single atomizing flat burner is to realize spraying second kind of metal (or alloy) more equably;
Flow into the metal flow of atomizing nozzle by control, control sprays layer thickness and sprays the amounts of thickness variation of layer and the pulling rate of bimetallic strip is controlled and stable rolling power, under rolling provide rational precondition and assurance are provided.
By both sides mechanical type or sealing gland formula or electromagnetic type side seal mechanism are set, slip by to both sides and reduce the recovery rate of metal to reduce or eliminate trickle metallic particles, and can improve the quality of edges of bimetallic strip at two rollers.
Rolling technology:
According to master tape and the physical property characteristic and the temperature conditions that spray layer metal, the draught during controlled rolling, the processing parameters such as pulling rate of metal strip, the bimetal composite strip of production specific thickness.
Online thermal treatment:
According to the characteristic of double layer of metal, carry out necessary online heating, to satisfy the requirement of subsequent fine roll process.
Finish-rolling process:
By the finish rolling of one or more frames, reach the finished product specification requirement.
Spray technology:
According to master tape with spray the material behavior of layer, carry out the necessary spray cooling or the thermal treatment of other form (as solid molten handle etc.) etc.
Coiling technique:
The thin plate of each operation (band) linear velocity is batched rolling with thin plate (band) on the control line.
High speed inert gas flow by atomizing nozzle with the liquid metal flow fragmentation after, what form disperse partly solidifies the shape metallic particles, be ejected into the pretension of walking around one of them roll, through between pretreated metal master tape and another roll, master tape and the easy associativity of metal refining particulate when utilizing high temperature can be bonded on the master tape it securely; Rotate at two rollers under the effect of rolling loads, the bimetal of master tape and metal refining composition further combined with, form good bimetal thin plate (band).Technical process of the present invention is short, compact equipment; And bimetal thin plate (band) directly rolling after spraying, that produce has high bonding strength; And rolling load is little, energy consumption is low etc.
By rolling bimetallic thin plate (band) technology that sprays provided by the invention, two gold that can continuously production high-quality Metal thin plate (band). This patent has technological process weak point, compact equipment, get final product Direct Rolling after spraying, Roll-force is little, technology is easy to control, and the bimetallic thin plate (band) that obtains has high bond strength etc. Characteristics.
Claims (1)
1. metal atomization sprays continuous production bimetal thin plate, strip technology, it is characterized in that: processing step
As follows:
1) preparation of liquid alloy: smelting is sprayed metal, and superheating temperature is controlled between 50～200 ℃;
2) preparation of master tape: master tape (11) is hot rolling winding or cold rolling winding;
3) master tape (11) is carried out uncoiling and smooth processing;
A) scrubbing: the greasy dirt of removing master tape (11) surface;
B) remove zone of oxidation: employing sandblast (12) or other mechanical treatment mode are removed the zone of oxidation on the master tape (11);
C) master tape heating: by to the heating process (13) of master tape (11) between following 50～250 ℃ of its solidus temperature, with further raising master tape and the bonding force that sprays between layer (3);
4) master tape (11) carries out tensioning to master tape (11) and walks around a roll rotation by helping winding up roller, master tape (11) is transported between the roll (4,41) of two horizontal positioned;
5) high velocity air from atomizing nozzle (1) ejection is broken into tiny metallic particles (2) with liquid metal;
6) metallic particles (2) is cooled off in motion gradually with high velocity air, sprays layer (3) spraying with higher speed under the semi-solid state situation to form in the zone that surrounds through the master tape (14) of surface treatment and preheating and another roll and side seal mechanism;
7) spray master tape (14) and the roll motion of layer (3), by the roll (4,41) of two backwards rotation with preheating;
8) master tape (14) with preheating is rolled with the bimetal that sprays layer (3) composition, forms the bimetal thin plate or the band (5) of good combination;
9) again bimetal thin plate or band (5) are carried out subsequent heat treatment (6), rolling (7), spray cooling (8), batch rolling by helping volume (9) to enter into reeling machine (10);
10) can continuous production bimetal thin plate or band (5) by above-mentioned steps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101325196A CN100374612C (en) | 2005-12-26 | 2005-12-26 | Process and apparatus for continuous producing double-metal thin plate, thin band by atomized metal ejection |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005101325196A CN100374612C (en) | 2005-12-26 | 2005-12-26 | Process and apparatus for continuous producing double-metal thin plate, thin band by atomized metal ejection |
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| CN1788890A CN1788890A (en) | 2006-06-21 |
| CN100374612C true CN100374612C (en) | 2008-03-12 |
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| CN111230121B (en) * | 2020-01-20 | 2022-02-11 | 佛山峰合精密喷射成形科技有限公司 | Nozzle swing driving mechanism, and device and method for manufacturing bimetallic plate |
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|---|---|---|---|---|
| US3775156A (en) * | 1970-06-20 | 1973-11-27 | Vandervell Products Ltd | Method of forming composite metal strip |
| JPS59185553A (en) * | 1983-04-05 | 1984-10-22 | Mitsubishi Heavy Ind Ltd | Production of clad steel plate |
| US4579168A (en) * | 1984-03-07 | 1986-04-01 | National Research Development Corp. | Making metal strip and slab from spray |
| US5669436A (en) * | 1991-03-18 | 1997-09-23 | Aluminum Company Of America | Method of continuously casting composite strip |
| CN1334357A (en) * | 2000-07-19 | 2002-02-06 | 中国科学院金属研究所 | Process for preparing bimetal band with steel substrate |
| US20030165709A1 (en) * | 2001-04-09 | 2003-09-04 | Gazapo Jose L | Bright products obtained by continuous casting |
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- 2005-12-26 CN CNB2005101325196A patent/CN100374612C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3775156A (en) * | 1970-06-20 | 1973-11-27 | Vandervell Products Ltd | Method of forming composite metal strip |
| JPS59185553A (en) * | 1983-04-05 | 1984-10-22 | Mitsubishi Heavy Ind Ltd | Production of clad steel plate |
| US4579168A (en) * | 1984-03-07 | 1986-04-01 | National Research Development Corp. | Making metal strip and slab from spray |
| US5669436A (en) * | 1991-03-18 | 1997-09-23 | Aluminum Company Of America | Method of continuously casting composite strip |
| CN1334357A (en) * | 2000-07-19 | 2002-02-06 | 中国科学院金属研究所 | Process for preparing bimetal band with steel substrate |
| US20030165709A1 (en) * | 2001-04-09 | 2003-09-04 | Gazapo Jose L | Bright products obtained by continuous casting |
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| CN1788890A (en) | 2006-06-21 |
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Assignee: Baotou Hydraulic Machinery Co., Ltd. Assignor: University of Science and Technology of Inner Mongolia Contract record no.: 2010110000044 Denomination of invention: Process and apparatus for continuous producing double-metal thin plate, thin band by atomized metal ejection Granted publication date: 20080312 License type: Exclusive License Open date: 20060621 Record date: 20100428 |
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