CN105154697B - A kind of production system of intermediate alloy wire rod and its production technology - Google Patents
A kind of production system of intermediate alloy wire rod and its production technology Download PDFInfo
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Abstract
The present invention relates to a kind of production system of intermediate alloy wire rod and its production technology, described technique is that aluminium ingot is put into the fusing that heats up after smelting equipment, and adjustment melt temperature carries out refinery by de-gassing, adds other metallic alloying, then carries out secondary refinery by de-gassing；Finally adjustment melt temperature is cast, and controls casting speed and rate of cooling, makes melt rapid solidification obtain cast bar；The cast bar generating can be continuously extruded, also first cast bar can be cut into section, extrude after carrying out cold-extruded or heat treatment more in batches, obtain the intermediate alloy wire rods of different shapes such as round shape, square shape by controlling extrusion speed and rate of cooling, and directly twine rolling or cut into intermediate alloy bar.Emphasis of the present invention passes through refinery by de-gassing, cast bar rapid solidification and continual extruding technology, carries out high-alloying, the wire rod of difficult machining deformation product continuously produces, and meets the even tissue of product and the requirement of higher force performance.
Description
Technical field
The invention belongs to intermediate alloy manufactures field, it is related to intermediate alloy wire rod, especially a kind of alloy content is high, difficult change
The production system of intermediate alloy wire rod of shape processing and its production technology.
Background technology
In modernization metal smelting process, intermediate alloy primarily serves element interpolation, crystal grain refinement, crystal grain go bad, go
Oxygen desulfurization and cleaning molten etc. act on, and can significantly improve product degree of purity and mechanical property.Wherein, intermediate alloy wire rod due to
Have the advantages that uniformity is high, add the accurate developing direction being increasingly becoming high-end intermediate alloy, but general intermediate alloy by
Higher in its alloying element content, deformation difficulty is big, and conventional production method is unsatisfactory for the processing request of intermediate alloy product.
Traditional wire production method is rolling or extrudes, for the poor intermediate alloy wire rod of plasticity typically using extruding
Method, intermediate alloy bar of specifically casting first, then bar is carried out with extruding, the centre that the method obtains after the pre-heat treatment
Alloy wire is constantly changed due to the temperature in recipient in extrusion process and extruding force, leads to intermediate alloy wire rod micro-
In tissue, primary phase is thick and skewness.Also easily crackle, cut and disconnected bar it is difficult to carry out spooling in product.
By retrieval, find following Patents documents report：
A kind of continuously casting continuous extrusion apparatus of metal and production technology (CN102303057A), described equipment includes
Melting furnace, holding furnace, conticaster, continuous extruder, anti-oxidation thermal insulation device and looper.Motlten metal is poured into continuous casting set
In standby pool of molten metal, motlten metal is made to cool down in the crystallizer of Forced water cooling and solidify；Traction machine is with certain speed
Strand is pulled out from crystallizer；Continuously extruded unit sent into after anti-oxidation thermal insulation device by the strand being drawn out.Due to this
It is continuously extruded that invention makes the metal after casting can directly carry waste heat to carry out, and now metal has higher plasticity, and resistance of deformation is relatively
Low, therefore can obtain larger deformation with less energy, save energy；It is particularly suited for needing preheating before continuously extruded
Metal and its alloy, make continuously extruded processing alloy kind expand.The present invention merges multiple working procedure it is achieved that short route, makes
Production cycle can shorten more than 50%, improves production efficiency.
By contrast, the application is with the difference of above-mentioned patent documentation：
1st, it is intermediate alloy in the application, intermediate alloy is high due to alloying element content, has and ordinary metallic material
Matter is different with deformation performance.
The application emphasis is the melting of intermediate alloy and casting process, particularly intermediate alloy product melting manufacture process
Technique and parameter.After alloying, after being cast, continuously generate intermediate alloy, whole technological process is more continuous, from the beginning
Adjustable controlled to finished product quality, this serves obvious action to the raising of the tissue of product, mechanical property, outward appearance.
2nd, the application improves the degree of purity of intermediate alloy wire rod by refinery by de-gassing twice, is once in fusion process
In, it is once in the chute transmitting procedure before casting, above-mentioned patent application does not relate to refinery by de-gassing and melt treatment
Content.
In the application, casting formed cast bar, the species according to product and prescription, can continuously extruded it is also possible to
Cast bar is carried out with extruding after room temperature or heat treatment.
3rd, the whole technological process of the application is different from above-mentioned patent, simpler, compact, takes up room little.
Content of the invention
It is an object of the invention in place of overcoming the deficiencies in the prior art, providing a kind of production procedure simple, and can show
Write cleanliness factor, the production system of the intermediate alloy wire rod of microscopic structure quality, mechanical property and application performance index improving product
System and its production technology.
The present invention solves technical problem and be employed technical scheme comprise that：
A kind of production system of intermediate alloy wire rod, including smelting equipment, chute, casting machine and extruder, smelting equipment, casting
Machine, extruder arranged for interval successively, is connected chute between the outlet of smelting equipment and casting machine, in the dog-house peace of smelting equipment
Dress getter, meets melt degasification and refine requirement.
And, connect in the stage casing of chute and connect a degasification tank, secondary getter is installed above degasification tank.(permissible
Select use, some products without)
And, in the outlet of extruder, arranged for interval has cooling water tank, length meter counter and admission machine successively, it is possible to achieve
Casting machine speed, speed of extruder are consistent with the coupling of admission machine.
And, described casting machine crystallizing wheel material is red copper, and the cross sectional shape of groove is trapezoidal, can make melt rapid solidification
Form trapezoidal web.
And, described smelting equipment is resistance furnace or induction furnace.
A kind of production technology of intermediate alloy wire rod, step is as follows：
(1) aluminium ingot is put into the fusing that heats up after smelting equipment, adjustment melt temperature is to 700-900 after aluminium ingot fusing finishes
DEG C carry out refinery by de-gassing, the degasification time is more than 10 minutes, degasification adds refining agent to carry out scarfing cinder process, at aluminium liquid surface after finishing
After reason is clean, at 700-1200 DEG C, add second metal, after alloying 15-120 minute, according to alloy species or feature,
Adjust temperature again and carry out secondary refinery by de-gassing to 700-1200 DEG C, the degasification time is more than 10 minutes, degasification finish after by melt table
Edema over the face slag is cleaned out；
(2) adjustment melt temperature is cast to 700-1200 DEG C, by the online temperature control technique of chute by front case melt temperature
Control more than 700 DEG C, cooling water flow controls in 30-60m3/ h, casting machine rotating speed is 6-10r/min, makes cast bar rapid solidification；
(3) it is less than 500 DEG C by the control of crystallizing wheel shower water is made with cast bar temperature, extrusion wheel velocity is 3-10r/min,
Cooling water flow controls in 30-60m3/ h, carries out continuously extruded or first cast bar is cut into section, then after carrying out cold-extruded or heat treatment
Extruding, finally gives the intermediate alloy wire rod of different cross section shape, and the wire rod being extruded into, through supercooling, directly twines into intermediate alloy volume
Or cut into intermediate alloy bar.
And, Al >=99.7% in described aluminium ingot, weight/mass percentage composition.
And, described second metal is strontium or calcium, wherein Sr >=99%, Ca >=99%, weight/mass percentage composition.
And, weight/mass percentage composition in aluminum for the second metal is 1-25%, weighs respectively, appropriate refining agent.
Advantages of the present invention and good effect are：
1st, the present invention passes through refinery by de-gassing, cast bar rapid solidification and continual extruding technology twice, simplifies production procedure, carries
High production efficiency；
2nd, the present invention improves the degree of purity of intermediate alloy wire rod by degasification twice and refine.
3rd, the present invention is in alloying and casting cycle, by technological temperature and setting rate it is achieved that in intermediate alloy
The even dispersion distribution of particle.Make whole technological process more continuous, from start to finish product quality is adjustable controlled, improves centre
The tensile strength of alloy wire and elongation percentage.
4th, the present invention can continuously produce intermediate alloy wire rod of different shapes, and directly twine into intermediate alloy volume or shear
Become intermediate alloy bar.
5th, this production technology can be used for the continuous production that product elongation percentage is less than 10% intermediate alloy class wire product.
Brief description
Fig. 1 is the structural representation of this production system；
Fig. 2 is the flow chart of this production technology；
Fig. 3 is conventionally produced AlSr10 wire microstructure figure；
Fig. 4 is the AlSr10 wire microstructure figure of this technique productions；
Fig. 5 is the AlSr10 wire rod mechanical property figure that traditional casting rod extrusion process produces；
Fig. 6 is the AlSr10 wire rod mechanical property figure of this method technique productions；
Fig. 7 is the micro-organization chart that embodiment 2 produces product；
Fig. 8 is the micro-organization chart that embodiment 3 produces product；
Fig. 9 is the micro-organization chart that embodiment 4 produces product.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings and by specific embodiment, and following examples are descriptive
, it is not determinate it is impossible to protection scope of the present invention is limited with this.
A kind of production system of intermediate alloy wire rod, including smelting equipment 1, insulation chute 3, casting machine 14 and extruder 10,
Smelting equipment, casting machine, extruder arranged for interval successively, installs a getter 2 in the dog-house of smelting equipment, in smelting equipment
Outlet and casting machine between be connected chute, the stage casing of chute connect connect a degasification tank 4, install secondary above degasification tank
Getter 5, connects a diversion box 13 in the rear of chute, diversion box is located at the top of casting machine crystallizing wheel 12.Here crystallizing wheel
A diameter of 1.2-1.5 rice, in the outlet of extruder, arranged for interval has cooling water tank 9, length meter counter 8 and admission machine 7 successively.
The workflow of this production system is：
Online production intermediate alloy in smelting equipment, and carry out degasification slagging-off, intermediate alloy melt is through chute
And diversion box enters casting machine, before entering casting machine, carry out second degasification slagging-off in the degasification tank in chute stage casing it is ensured that melt
Degree of purity.Melt is quickly cast into cast bar 11 after entering casting machine, and is transferred directly to extrude by cast bar by the access bridge of casting machine
Machine carries out continuously extruded, and intermediate alloy wire rod 6 after extruding directly twines into intermediate alloy volume by admission machine.
Described smelting equipment is resistance furnace or induction furnace.
Being shaped as of the section of described casting machine crystallization race is trapezoidal.
A kind of production technology of intermediate alloy wire rod, step is as follows：
(1) aluminium ingot is put into the fusing that heats up after smelting equipment, adjustment melt temperature is to 700-900 after aluminium ingot fusing finishes
DEG C carry out refinery by de-gassing, the degasification time is more than 10 minutes, degasification adds refining agent to carry out scarfing cinder process, at aluminium liquid surface after finishing
After reason is clean, at 700-1200 DEG C, add second metal, after alloying 15-120 minute, according to alloy species or feature,
Adjust temperature again and carry out secondary refinery by de-gassing to 700-1200 DEG C, the degasification time is more than 10 minutes, degasification finish after by melt table
Edema over the face slag is cleaned out；
(2) adjustment melt temperature is cast to 700-1200 DEG C, by the online temperature control technique of chute by front case melt temperature
Control more than 700 DEG C, cooling water flow controls in 30-60m3/ h, casting machine rotating speed is 6-10r/min, makes cast bar rapid solidification；
(3) it is less than 500 DEG C by the control of crystallizing wheel shower water is made with cast bar temperature, extrusion wheel velocity is 3-10r/min,
Cooling water flow controls in 30-60m3/ h, carries out continuously extruded or first cast bar is cut into section, then after carrying out cold-extruded or heat treatment
Extruding, finally gives the intermediate alloy wire rod of different cross section shape, and the wire rod being extruded into, through supercooling, directly twines into intermediate alloy volume
Or cut into intermediate alloy bar.
Al >=99.7% in described aluminium ingot, weight/mass percentage composition.Described second metal is strontium or calcium, wherein Sr >=
99%, Ca >=99%, weight/mass percentage composition.Weight/mass percentage composition in aluminum for the second metal is 1-25%, weighs respectively, essence
Refining agent is appropriate.
After traditional casting rod extruding, the particle of AlSr10 wire rod be broken bulk, size averagely more than 50 microns,
Big more than 200 microns, and skewness, as shown in Figure 3；And the particle average size adopted new technology 30 microns with
Under, maximum generally 50 microns, particle is evenly distributed, as shown in Figure 4.
Fig. 5, Fig. 6 be contrast using the intensity of AlSr10 product of traditional casting rod pressing method and the production of this patent method and
Elongation percentage, traditional as can be seen from Figure 5 casting rod extrusion process, the tensile strength of material is 65-75MPa, and elongation percentage is 7%-
8%；Utilize product tensile strength 105-125Mpa of new technology, elongation percentage 9%-11% as can be seen from Figure 6, intensity raising connects
Nearly 1 times, elongation percentage also improves 30% about.
Embodiment 1：
A kind of production technology of intermediate alloy wire rod, step is as follows：
(1) weigh 400kg raw aluminum liquid and 45kg Preparation of Metallic Strontium respectively according to the dispensing requirements of AlSr10 alloy；
(2) aluminium liquid is proceeded to adjustment temperature after electric furnace and carry out refinery by de-gassing to 708 DEG C, 24 minutes degasification time, degasification finishes
Refining agent is added to carry out scarfing cinder process afterwards, aluminium liquid surface treatment totally adds Preparation of Metallic Strontium afterwards, then adjustment temperature is protected to 1008 DEG C
Temperature, and carry out secondary refinery by de-gassing, 25 minutes degasification time, dross on surface of fusant is cleaned out after finishing by degasification；
(3) adjustment melt temperature is cast to 91050 DEG C, by the online temperature control technique of chute by front case melt temperature control
At 837 DEG C, cooling water flow controls in 36m system3/ h, casting machine velocity of rotation is 7r/min, a diameter of 1.2 meters of casting machine crystallizing wheel.
(4) cast bar temperature is controlled to 239 DEG C by online spraying technique, extrusion wheel velocity 8r/min, cooling water flow controls
In 37m3/ h, extruding obtains aluminum strontium wire rod, and twines into aluminum strontium rouleau.
Embodiment 2：700-710 DEG C of cast temperature, remaining condition is constant, and product microscopic structure is shown in Fig. 7：As seen from the figure,
Al in AlSr10 wire microstructure4Sr phase average size does not surpass 20 microns, and full-size does not surpass 40 microns, and particle distribution is all
Even, no blank tape.
Embodiment 3：900-920 DEG C of cast temperature, remaining condition is constant, and product microscopic structure is shown in Fig. 8：As seen from the figure,
Al in AlSr10 wire microstructure4Sr phase average size does not surpass 15 microns, and full-size does not surpass 30 microns, and particle distribution is all
Even, no blank tape.
Embodiment 4：1050-1200 DEG C of cast temperature, remaining condition is constant, and product microscopic structure is shown in Fig. 9：As seen from the figure,
Al in AlSr10 wire microstructure4Sr phase average size does not surpass 15 microns, and full-size does not surpass 30 microns, and particle distribution is all
Even, no blank tape.
Embodiment 5：
(1) weigh 500kg raw aluminum liquid and 27kg calcium metal respectively according to the dispensing requirements of AlCa5 alloy；
(2) aluminium liquid is proceeded to adjustment temperature after electric furnace and carry out refinery by de-gassing to 700 DEG C, 10 minutes degasification time, degasification finishes
Add refining agent to carry out scarfing cinder process afterwards, when 820 DEG C, aluminium liquid surface treatment is totally added calcium metal afterwards, adds calcium metal
Alloying 20 minutes afterwards, add cooling material, adjust 750 DEG C of temperature；
(3) adjustment melt temperature is cast to 750 DEG C, is controlled front case melt temperature by the online temperature control technique of chute
At 700 DEG C, cooling water flow controls in 33m3/ h, casting machine velocity of rotation is 7r/min.
(4) cast bar temperature is controlled to 230 DEG C by online spraying technique, extrusion wheel velocity 8r/min, cooling water flow controls
In 37m3/ h, extruding obtains aluminum strontium wire rod, and twines into aluminum strontium rouleau.
The present invention produces AlSr10 wire rod by the way of continuous casting even squeezes, and needs the parameter of priority control to include casting temperature
Degree, intensity of cooling, extrusion speed and extruding force.
Cast temperature and intensity of cooling：Suitable cast temperature solidification effectively suppresses the increasing of melt metallographic particle size
Greatly, coordinate the chilling action of cooling water it is ensured that the precipitation of metallographic uniform particle disperse in casting cycle simultaneously, make simultaneously
AlSr10 cast bar has good flow stress and deformation behaviour.
Extrusion speed：On the basis of ensure that AlSr10 cast bar good fluidity, the suitable extrusion speed of cooperation can
Make metal that tension to occur at flash, so that the impurity of blank surface is flowed out from flash mouth, thus improving the surface quality of product,
Ensure AlSr10 wire rod presentation quality.Metallographic particle dispersion uniform AlSr10 cast bar, coordinates suitable extrusion speed can have
Effect shorten the metallographic particle growth time it is ensured that the fine uniform of metallographic particle.
Extruding force：The stress of deformable metal is better, and product tissue is finer and close, and microscopic particles granularity is less, and blank exists
Casting is in strong three compressive stress state during squeezing, and is conducive to improving the moulding of metal, eliminates casting flaw, occurs to tie again
Crystalline substance, improves metallization structure, refines internal grain, thus improving the mechanical property of metal.
Above-described is only the preferred embodiment of the present invention it is noted that for those of ordinary skill in the art
For, on the premise of without departing from inventive concept, some deformation can also be made and improve, these broadly fall into the protection of the present invention
Scope.
Claims (10)
1. a kind of production system of intermediate alloy wire rod, including smelting equipment, chute, casting machine and extruder, smelting equipment, casting
Machine, extruder arranged for interval successively, be connected chute between the outlet of smelting equipment and casting machine it is characterised in that：Set in melting
Standby dog-house installs getter, meets melt degasification and refine requirement.
2. intermediate alloy wire rod according to claim 1 production system it is characterised in that：Connect even in the stage casing of chute
Connect a degasification tank, secondary getter is installed above degasification tank.
3. intermediate alloy wire rod according to claim 1 production system it is characterised in that：Extruder outlet successively
Arranged for interval has cooling water tank, length meter counter and admission machine.
4. intermediate alloy wire rod according to claim 1 production system it is characterised in that：Described casting machine crystallizing wheel material
Matter is red copper, and the cross sectional shape of groove is trapezoidal.
5. intermediate alloy wire rod according to claim 1 production system it is characterised in that：Described smelting equipment is resistance
Stove or induction furnace.
6. a kind of production technology of intermediate alloy wire rod it is characterised in that：Step is as follows：
(1) aluminium ingot is put into the fusing that heats up after smelting equipment, adjustment melt temperature enters to 700-900 DEG C after aluminium ingot fusing finishes
Row refinery by de-gassing, the degasification time is more than 10 minutes, and degasification adds refining agent to carry out scarfing cinder process after finishing, aluminium liquid surface treatment is dry
After net, at 700-1200 DEG C, add second metal, after alloying 15-120 minute, according to alloy species or feature, then adjust
Whole temperature carries out secondary refinery by de-gassing to 700-1200 DEG C, and the degasification time is more than 10 minutes, and bath surface is floated after finishing by degasification
Slag is cleaned out；
(2) adjustment melt temperature is cast to 700-1200 DEG C, is controlled front case melt temperature by the online temperature control technique of chute
More than 700 DEG C, cooling water flow controls in 30-60m3/ h, casting machine rotating speed is 6-10r/min, makes cast bar rapid solidification；
(3) it is less than 500 DEG C by the control of crystallizing wheel shower water is made with cast bar temperature, extrusion wheel velocity is 3-10r/min, cooling
Discharge controls in 30-60m3/ h, carries out continuously extruded or first cast bar is cut into section, then carries out squeezing after cold-extruded or heat treatment
Pressure, finally give the intermediate alloy wire rod of different cross section shape, the wire rod being extruded into through supercooling, directly twine into intermediate alloy volume or
Cut into intermediate alloy bar.
7. intermediate alloy wire rod according to claim 6 production technology it is characterised in that：Al in described aluminium ingot >=
99.7%, weight/mass percentage composition.
8. intermediate alloy wire rod according to claim 6 production technology it is characterised in that：Described second metal is strontium
Or calcium, wherein Sr >=99%, Ca >=99%, weight/mass percentage composition.
9. intermediate alloy wire rod according to claim 6 production technology it is characterised in that：Second metal is in aluminum
Weight/mass percentage composition is 1-25%, weighs respectively, appropriate refining agent.
10. intermediate alloy wire rod according to claim 6 production technology it is characterised in that：This technique is prolonged for product
The continuous production that rate of stretching is less than 10% intermediate alloy class wire product.
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| CN105695779B (en) * | 2016-04-29 | 2017-11-24 | 永城金联星铝合金有限公司 | A kind of preparation method of high accuracy and high-cleanness, high alloy aluminium bar |
| CN105964940B (en) * | 2016-06-17 | 2018-09-28 | 马鞍山奥特佳机电有限公司 | A kind of manufacturing process of the quiet disk blank of automobile air conditioner compressor aluminium alloy |
| CN108188365A (en) * | 2018-03-12 | 2018-06-22 | 河北四通新型金属材料股份有限公司 | Aluminium alloy pinpoints direct casting system |
| CN111101006A (en) * | 2020-01-06 | 2020-05-05 | 河北四通新型金属材料股份有限公司 | Production process of uniform intermediate alloy cast strip |
| CN111363939A (en) * | 2020-03-27 | 2020-07-03 | 山东滨州华创金属有限公司 | Preparation process of aluminum-strontium intermediate alloy wire rod |
| CN111958193B (en) * | 2020-09-14 | 2022-05-24 | 北京北冶功能材料有限公司 | Preparation method of alloy wire difficult to deform |
| CN114160579B (en) * | 2022-01-11 | 2023-07-07 | 大连交通大学 | Continuous casting continuous extrusion production line |
| CN115106521B (en) * | 2022-07-13 | 2024-02-02 | 昆明理工大学 | Preparation method of wire rod for additive manufacturing |
| CN115141945B (en) * | 2022-08-01 | 2023-10-31 | 立中四通轻合金集团股份有限公司 | Preparation method of aluminum-strontium intermediate alloy coiled material with strontium content being more than 10wt% |
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| FR2230438B1 (en) * | 1973-05-22 | 1979-04-13 | Michelin & Cie | |
| CN101805837B (en) * | 2010-04-27 | 2012-02-01 | 辽宁忠旺集团有限公司 | Manufacture method of aluminum alloy section for track traffic conductor rail |
| CN101890485B (en) * | 2010-06-08 | 2012-02-22 | 东北大学 | Continuous casting and extrusion forming method for magnesium alloy bar/wire rod |
| CN102303057B (en) * | 2011-09-19 | 2013-06-05 | 大连交通大学 | Continuous casting and continuous extrusion device and production method for metal |
| CN103674649A (en) * | 2013-12-13 | 2014-03-26 | 西南铝业（集团）有限责任公司 | Preparation method of spectrum standard sample for 1420 aluminum lithium alloy |
| CN104741571B (en) * | 2015-03-23 | 2016-08-24 | 昆明理工大学 | A kind of preparation method of wallboard section bar |
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Address after: 071000 No. 359, Fazhan West Street, Qingyuan District, Baoding City, Hebei Province Patentee after: Lizhong Sitong light alloy Group Co.,Ltd. Address before: 071100 No. 359, Fazhan West Street, Qingyuan County, Baoding City, Hebei Province Patentee before: HEBEI SITONG NEW METAL MATERIAL Co.,Ltd. |