CN105154697A - Production system of intermediate alloy wires and production technology of intermediate alloy wires - Google Patents
Production system of intermediate alloy wires and production technology of intermediate alloy wires Download PDFInfo
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- CN105154697A CN105154697A CN201510628622.3A CN201510628622A CN105154697A CN 105154697 A CN105154697 A CN 105154697A CN 201510628622 A CN201510628622 A CN 201510628622A CN 105154697 A CN105154697 A CN 105154697A
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Abstract
The invention relates to a production system of intermediate alloy wires and a production technology of the intermediate alloy wires. According to the technology, an aluminum ingot is thrown into a smelting device to be heated and melted, the temperature of a melt is adjusted, degassing refining is conducted, other metal is added for alloying, and secondary degassing refining is conducted; finally, the temperature of the melt is adjusted for casting, and the casting speed and the cooling speed are controlled, so that the melt can be rapidly set to obtain a cast bar; and the generated cast bar can be extruded continuously, the cast bar can also be sheared into sections firstly, then after cold extrusion or heat treatment is conducted, batched extrusion is conducted, and the intermediate alloy wires in different shapes such as a round shape or a square shape can be obtained by controlling the extruding speed and the cooling speed and are directly wound into rolls or sheared into intermediate alloy rods. According to the production system of the intermediate alloy wires and the production technology of the intermediate alloy wires, high-alloying continuous wire production of products which are difficult to machine and deform is conducted mainly through the technologies of degassing refining, cast bar rapid setting and continuous extrusion, and the requirements for even tissue and high mechanical performance of the products are met.
Description
Technical field
The invention belongs to master alloy and manufacture field, relate to master alloy wire rod, the production system of the master alloy wire rod of high, the difficult deformation processing of especially a kind of alloy content and production technique thereof.
Background technology
In modernization metal smelting process, the effects such as master alloy mainly plays that element interpolation, grain refining, crystal grain are rotten, deoxidation desulfurization and cleaning molten, can significantly improve product purity and mechanical property.Wherein, master alloy wire rod due to have homogeneity high, add the developing direction that the advantage such as accurate becomes high-end master alloy gradually, but general master alloy is higher due to its alloying element content, be out of shape difficulty greatly, conventional production method does not meet the processing request of master alloy product.
Traditional wire production method is rolling or extruding, the master alloy wire rod poor for plasticity generally adopts pressing method, first to cast specifically master alloy bar, then extrude after thermal pretreatment being carried out to bar, the master alloy wire rod that the method obtains constantly changes due to the temperature in container in extrusion process and squeeze, causes primary phase in master alloy wire microstructure thick and skewness.Also very easily there is crackle, cut and disconnected bar in product, is difficult to carry out spooling.
By retrieval, find following Patents bibliographical information:
A kind of continuous casting continuous extrusion apparatus of metal and production technique (CN102303057A), described equipment comprises smelting furnace, holding furnace, continuous caster, continuous extruder, anti-oxidation thermal insulation device and looper.Molten metal is poured in the pool of molten metal of continuous casting installation for casting, make molten metal cool in the crystallizer of Forced water cooling and solidify; Tractor pulls out strand with certain speed from crystallizer; Continuously extruded unit sent into by the strand be drawn out after anti-oxidation thermal insulation device.Due to the present invention, to make the metal after casting directly be with waste heat to carry out continuously extruded, and now metal has higher plasticity, and resistance to deformation is lower, therefore can obtain larger distortion, conserve energy with less energy; Be particularly useful for the metal and the alloy thereof that need preheating before continuously extruded, continuously extruded processing alloy kind is expanded.Multiple working procedure merges by the present invention, achieves short route, makes the production cycle shorten more than 50%, improves production efficiency.
By contrast, the difference of the application and above-mentioned patent documentation is:
1, be master alloy in the application, master alloy is high due to alloying element content, has different with deformation performance from ordinary metallic material character.
The application's emphasis is melting and the castingprocesses of master alloy, particularly the technique of master alloy product melting manufacturing processed and parameter.After alloying, generate master alloy continuously after casting, whole technical process is more continuous, and from start to finish quality product is adjustable controlled, and the raising of this tissue to product, mechanical property, outward appearance serves significant effect.
2, the application improves the purity of master alloy wire rod by twice refinery by de-gassing, is once be once that in the chute transmitting procedure before casting, above-mentioned patent application does not relate to the content of refinery by de-gassing and melt treatment in fusion process.
In the application, the cast bar that casting is formed, according to kind and the specification of quality of product, can be continuously extruded, extrude after also can carrying out normal temperature or thermal treatment to cast bar.
3, the whole technical process of the application is different from above-mentioned patent, more simply, compact, takes up room little.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art part, there is provided a kind of Production Flow Chart simple, and production system and the production technique thereof of the master alloy wire rod of the cleanliness factor of product, microstructure quality, mechanical property and application performance index can be significantly improved.
The technical scheme that technical solution problem of the present invention adopts is:
A kind of production system of master alloy wire rod, comprise melting equipment, chute, casting machine and extrusion machine, melting equipment, casting machine, extrusion machine successively interval are arranged, chute is connected with between casting machine in the outlet of melting equipment, at the dog-house of melting equipment, getter is installed, meets melt degasification and refining requirement.
And, be communicated with connection one degasification tank in the stage casing of chute, secondary getter is installed above degasification tank.(can choice for use, some product need not)
And, be furnished with cooling water tank, length meter counter and wire coiler in interval successively in the outlet of extrusion machine, casting machine speed can be realized, speed of extruder is consistent with the coupling of wire coiler.
And described casting machine crystallizing wheel material is red copper, the cross-sectional shape of groove is trapezoidal, and melt rapid solidification can be made to form trapezoidal web.
And described melting equipment is resistance furnace or induction furnace.
A production technique for master alloy wire rod, step is as follows:
(1) heat up after aluminium ingot being dropped into melting equipment fusing, adjust melt temperature after treating aluminium ingot fusing and carry out refinery by de-gassing to 700-900 DEG C, the degasification time is greater than 10 minutes, add refining agent after degasification and carry out scarfing cinder process, after the surface treatment of aluminium liquid is clean, at 700-1200 DEG C, add the 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 greater than 10 minutes, is cleaned out by dross on surface of fusant after degasification;
(2) adjust melt temperature to cast to 700-1200 DEG C, controlled more than 700 DEG C by front case melt temperature by the online temperature control technique of chute, cooling water flow controls at 30-60m
3/ h, casting machine rotating speed is 6-10r/min, makes cast bar rapid solidification;
(3), by making cast bar temperature lower than 500 DEG C to the control of crystallizing wheel spray water, extrusion wheel velocity is 3-10r/min, and cooling water flow controls at 30-60m
3/ h, carries out continuously extruded or first by the cast bar section of cutting into, then extrudes after carrying out cold-extruded or thermal treatment, finally obtain the master alloy wire rod of different cross section shape, and the wire rod be extruded into, through overcooling, directly twines into master alloy volume or cuts into master alloy bar.
And, Al >=99.7% in described aluminium ingot, mass percentage.
And described the second metal is strontium or calcium, wherein Sr >=99%, Ca >=99%, mass percentage.
And the mass percentage of the second metal in aluminium is 1-25%, and take respectively, refining agent is appropriate.
Advantage of the present invention and positively effect are:
1, the present invention is by twice refinery by de-gassing, cast bar rapid solidification and continual extruding technology, simplifies Production Flow Chart, improves production efficiency;
2, the present invention improves the purity of master alloy wire rod by twice degasification and refining.
3, the present invention is in alloying and casting cycle, by technological temperature and setting rate, achieves the even dispersion distribution of particle in master alloy.Make whole technical process more continuous, from start to finish quality product is adjustable controlled, improves tensile strength and the unit elongation of master alloy wire rod.
4, the present invention can the difform master alloy wire rod of continuous seepage, and directly twines into master alloy volume or cut into master alloy bar.
5, this production technique can be used for the continuous seepage that product unit elongation is less than the master alloy class wire product of 10%.
Accompanying drawing explanation
Fig. 1 is the structural representation of this production system;
Fig. 2 is the schema of this production technique;
Fig. 3 is the AlSr10 wire microstructure figure that traditional technology is produced;
Fig. 4 is the AlSr10 wire microstructure figure of this explained hereafter;
Fig. 5 is the AlSr10 wire rod mechanical property figure that traditional casting rod extrusion process is produced;
Fig. 6 is the AlSr10 wire rod mechanical property figure of present method explained hereafter;
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.
Embodiment
Below in conjunction with accompanying drawing, also by specific embodiment, the invention will be further described, and following examples are descriptive, are not determinate, can not limit protection scope of the present invention with this.
A kind of production system of master alloy wire rod, comprise melting equipment 1, insulation chute 3, casting machine 14 and extrusion machine 10, melting equipment, casting machine, extrusion machine successively interval are arranged, at the dog-house of melting equipment, a getter 2 is installed, be connected chute in the outlet of melting equipment with between casting machine, be communicated with connection one degasification tank 4 in the stage casing of chute, secondary getter 5 is installed above degasification tank, connect a diversion box 13 at the rear of chute, diversion box is positioned at the top of casting machine crystallizing wheel 12.Here the diameter of crystallizing wheel is 1.2-1.5 rice, is furnished with cooling water tank 9, length meter counter 8 and wire coiler 7 in interval successively in the outlet of extrusion machine.
The workflow of this production system is:
Online production master alloy in melting equipment, and carry out degasification slagging-off, intermediate alloy melt enters casting machine through chute and diversion box, before entering casting machine, carries out second time degasification slagging-off, ensure the purity of melt in the degasification tank in chute stage casing.Be cast into cast bar 11 fast after melt enters casting machine, and by the access bridge of casting machine, cast bar be directly sent to extrusion machine and carry out continuously extruded, the master alloy wire rod 6 after extruding directly twines into master alloy volume by wire coiler.
Described melting equipment is resistance furnace or induction furnace.
The shape in the cross section of described casting machine crystallization race is trapezoidal.
A production technique for master alloy wire rod, step is as follows:
(1) heat up after aluminium ingot being dropped into melting equipment fusing, adjust melt temperature after treating aluminium ingot fusing and carry out refinery by de-gassing to 700-900 DEG C, the degasification time is greater than 10 minutes, add refining agent after degasification and carry out scarfing cinder process, after the surface treatment of aluminium liquid is clean, at 700-1200 DEG C, add the 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 greater than 10 minutes, is cleaned out by dross on surface of fusant after degasification;
(2) adjust melt temperature to cast to 700-1200 DEG C, controlled more than 700 DEG C by front case melt temperature by the online temperature control technique of chute, cooling water flow controls at 30-60m
3/ h, casting machine rotating speed is 6-10r/min, makes cast bar rapid solidification;
(3), by making cast bar temperature lower than 500 DEG C to the control of crystallizing wheel spray water, extrusion wheel velocity is 3-10r/min, and cooling water flow controls at 30-60m
3/ h, carries out continuously extruded or first by the cast bar section of cutting into, then extrudes after carrying out cold-extruded or thermal treatment, finally obtain the master alloy wire rod of different cross section shape, and the wire rod be extruded into, through overcooling, directly twines into master alloy volume or cuts into master alloy bar.
Al >=99.7% in described aluminium ingot, mass percentage.Described the second metal is strontium or calcium, wherein Sr >=99%, Ca >=99%, mass percentage.The mass percentage of the second metal in aluminium is 1-25%, and take respectively, refining agent is appropriate.
After traditional casting rod extruding, the particle of AlSr10 wire rod be broken bulk, size on average more than 50 microns, maximum more than 200 microns, and skewness, as shown in Figure 3; And the particle average size of adopting new technology is below 30 microns, be maximumly generally 50 microns, particle distribution is even, as shown in Figure 4.
Fig. 5, Fig. 6 are the intensity and the unit elongation that contrast the AlSr10 product utilizing traditional casting rod pressing method and this patent method to produce, casting rod extrusion process traditional as can be seen from Figure 5, and the tensile strength of material is 65-75MPa, and unit elongation is 7%-8%; Utilize the product tensile strength 105-125Mpa of novel process as can be seen from Figure 6, unit elongation 9%-11%, intensity improves close to 1 times, and unit elongation also improves about 30%.
Embodiment 1:
A production technique for master alloy wire rod, step is as follows:
(1) take 400kg raw aluminum liquid and 45kg Preparation of Metallic Strontium respectively according to the dispensing requirements of AlSr10 alloy;
(2) adjust temperature to 708 DEG C after aluminium liquid being proceeded to electric furnace and carry out refinery by de-gassing, 24 minutes degasification time, add refining agent after degasification and carry out scarfing cinder process, Preparation of Metallic Strontium is added after the surface treatment of aluminium liquid is clean, then temperature to 1008 DEG C insulation is adjusted, and carry out secondary refinery by de-gassing, 25 minutes degasification time, after degasification, dross on surface of fusant is cleaned out;
(3) adjust melt temperature to 91050 DEG C to cast, controlled front case melt temperature at 837 DEG C by the online temperature control technique of chute, cooling water flow controls at 36m
3/ h, casting machine velocity of rotation is 7r/min, and casting machine crystallizing wheel diameter is 1.2 meters.
(4) control cast bar temperature to 239 DEG C by online spraying technique, extrusion wheel velocity 8r/min, cooling water flow controls at 37m
3/ h, extruding obtains aluminium strontium wire rod, and twines into aluminium strontium rouleau.
Embodiment 2: pouring temperature 700-710 DEG C, all the other conditions are constant, and product microscopic structure is shown in Fig. 7: as seen from the figure, Al in AlSr10 wire microstructure
4sr phase average size does not surpass 20 microns, and overall dimension does not surpass 40 microns, and particle distribution is even, without dead zone.
Embodiment 3: pouring temperature 900-920 DEG C, all the other conditions are constant, and product microscopic structure is shown in Fig. 8: as seen from the figure, Al in AlSr10 wire microstructure
4sr phase average size does not surpass 15 microns, and overall dimension does not surpass 30 microns, and particle distribution is even, without dead zone.
Embodiment 4: pouring temperature 1050-1200 DEG C, all the other conditions are constant, and product microscopic structure is shown in Fig. 9: as seen from the figure, Al in AlSr10 wire microstructure
4sr phase average size does not surpass 15 microns, and overall dimension does not surpass 30 microns, and particle distribution is even, without dead zone.
Embodiment 5:
(1) take 500kg raw aluminum liquid and 27kg calcium metal respectively according to the dispensing requirements of AlCa5 alloy;
(2) adjust temperature to 700 DEG C after aluminium liquid being proceeded to electric furnace and carry out refinery by de-gassing, 10 minutes degasification time, add refining agent after degasification and carry out scarfing cinder process, 820 DEG C time, calcium metal is added after the surface treatment of aluminium liquid is clean, to add after calcium metal alloying 20 minutes, adding cooling material, adjustment temperature 750 DEG C;
(3) adjust melt temperature to 750 DEG C to cast, controlled front case melt temperature at 700 DEG C by the online temperature control technique of chute, cooling water flow controls at 33m
3/ h, casting machine velocity of rotation is 7r/min.
(4) control cast bar temperature to 230 DEG C by online spraying technique, extrusion wheel velocity 8r/min, cooling water flow controls at 37m
3/ h, extruding obtains aluminium strontium wire rod, and twines into aluminium strontium rouleau.
The present invention adopts continuous casting to connect the mode of squeezing and produces AlSr10 wire rod, needs the parameter of priority control to comprise pouring temperature, cooling intensity, extrusion speed and squeeze.
Pouring temperature and cooling intensity: suitable pouring temperature solidifies the effective increase suppressing melt metallographic size of particles, in casting cycle, coordinate the chilling action of water coolant simultaneously, ensure the precipitation of metallographic uniform particle disperse, make AlSr10 cast bar have good stress of fluidity and deformation behaviour simultaneously.
Extrusion speed: on the basis that ensure that AlSr10 cast bar good fluidity, coordinate suitable extrusion speed that metal can be made to occur tensile stress at flash place, the impurity of blank surface is flowed out from flash mouth, thus improves the surface quality of product, ensure AlSr10 wire rod visual appearance.The uniform AlSr10 cast bar of metallographic particle dispersion, coordinates suitable extrusion speed can effectively shorten the metallographic particle growth time, ensures the fine uniform of metallographic particle.
Squeeze: the strained condition of deformable metal is better, product is organized finer and close, microscopic particles granularity is less, blank pushes through in journey in casting and is in three strong compressive stress states, is conducive to improving the moulding of metal, eliminates casting flaw, there is recrystallize, improve metallization structure, refinement internal grain, thus improve the mechanical property of metal.
Above-described is only the preferred embodiment of the present invention, it should be pointed out that for the person of ordinary skill of the art, and under the prerequisite not departing from inventive concept, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (10)
1. the production system of a master alloy wire rod, comprise melting equipment, chute, casting machine and extrusion machine, melting equipment, casting machine, extrusion machine successively interval are arranged, chute is connected with between casting machine in the outlet of melting equipment, it is characterized in that: at the dog-house of melting equipment, getter is installed, meets melt degasification and refining requirement.
2. the production system of master alloy wire rod according to claim 1, is characterized in that: be communicated with connection one degasification tank in the stage casing of chute, install secondary getter above degasification tank.
3. the production system of master alloy wire rod according to claim 1, is characterized in that: be furnished with cooling water tank, length meter counter and wire coiler in interval successively in the outlet of extrusion machine.
4. the production system of master alloy wire rod according to claim 1, is characterized in that: described casting machine crystallizing wheel material is red copper, and the cross-sectional shape of groove is trapezoidal.
5. the production technique of master alloy wire rod according to claim 1, is characterized in that: described melting equipment is resistance furnace or induction furnace.
6. a production technique for master alloy wire rod, is characterized in that: step is as follows:
(1) heat up after aluminium ingot being dropped into melting equipment fusing, adjust melt temperature after treating aluminium ingot fusing and carry out refinery by de-gassing to 700-900 DEG C, the degasification time is greater than 10 minutes, add refining agent after degasification and carry out scarfing cinder process, after the surface treatment of aluminium liquid is clean, at 700-1200 DEG C, add the 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 greater than 10 minutes, is cleaned out by dross on surface of fusant after degasification;
(2) adjust melt temperature to cast to 700-1200 DEG C, controlled more than 700 DEG C by front case melt temperature by the online temperature control technique of chute, cooling water flow controls at 30-60m
3/ h, casting machine rotating speed is 6-10r/min, makes cast bar rapid solidification;
(3), by making cast bar temperature lower than 500 DEG C to the control of crystallizing wheel spray water, extrusion wheel velocity is 3-10r/min, and cooling water flow controls at 30-60m
3/ h, carries out continuously extruded or first by the cast bar section of cutting into, then extrudes after carrying out cold-extruded or thermal treatment, finally obtain the master alloy wire rod of different cross section shape, and the wire rod be extruded into, through overcooling, directly twines into master alloy volume or cuts into master alloy bar.
7. the production technique of master alloy wire rod according to claim 6, is characterized in that: Al >=99.7% in described aluminium ingot, mass percentage.
8. the production technique of master alloy wire rod according to claim 6, is characterized in that: described the second metal is strontium or calcium, wherein Sr >=99%, Ca >=99%, mass percentage.
9. the production technique of master alloy wire rod according to claim 6, is characterized in that: the mass percentage of the second metal in aluminium is 1-25%, and take respectively, refining agent is appropriate.
10. the production technique of master alloy wire rod according to claim 6, is characterized in that: this technique is used for the continuous seepage that product unit elongation is less than the master alloy class wire product of 10%.
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Cited By (9)
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| CN105695779A (en) * | 2016-04-29 | 2016-06-22 | 永城金联星铝合金有限公司 | Preparation method of high-precision and high-cleanliness aluminum alloy rod |
| CN105964940A (en) * | 2016-06-17 | 2016-09-28 | 马鞍山奥特佳机电有限公司 | Manufacturing process of automobile air conditioner compressor aluminum alloy stator disk blank |
| 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 |
| CN111958193A (en) * | 2020-09-14 | 2020-11-20 | 北京北冶功能材料有限公司 | Preparation method of alloy wire difficult to deform |
| CN114160579A (en) * | 2022-01-11 | 2022-03-11 | 大连交通大学 | Continuous casting and continuous extrusion production line |
| CN115106521A (en) * | 2022-07-13 | 2022-09-27 | 昆明理工大学 | Preparation method of wire for additive manufacturing |
| CN115141945A (en) * | 2022-08-01 | 2022-10-04 | 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 of more than 10wt% |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN111958193A (en) * | 2020-09-14 | 2020-11-20 | 北京北冶功能材料有限公司 | Preparation method of alloy wire difficult to deform |
| 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 |
| CN114160579A (en) * | 2022-01-11 | 2022-03-11 | 大连交通大学 | Continuous casting and continuous extrusion production line |
| CN115106521A (en) * | 2022-07-13 | 2022-09-27 | 昆明理工大学 | Preparation method of wire for additive manufacturing |
| CN115106521B (en) * | 2022-07-13 | 2024-02-02 | 昆明理工大学 | Preparation method of wire rod for additive manufacturing |
| CN115141945A (en) * | 2022-08-01 | 2022-10-04 | 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 of more than 10wt% |
| 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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