CN1257302C - Process for preparing Fe3Si base alloy sheet containing B, Ti, Zr and V - Google Patents

Abstract

The present invention belongs to the field of metal materials, particularly to a process for preparing a Fe3Si base alloy sheet containing B, Ti, Zr and V. The content of Fe in the sheet is from 92 to 93%, and the content of Si is from 6 to 7%. The present invention is characterized in that 200 to 580 ppm of boron and 0.5 to 1% of Ti, Zr and V are added into the alloy. The measures, such as casting ingot annealing, control forging, hot rolling, the annealing of hot rolled plates, warm rolling temperature, time, etc., are adopted in the aspect of process control, and a traditional forging and rolling device is utilized to successfully prepare the base alloy sheet containing the thickness of 0.10 to 0.30mm of Fe3Si. The sheet material has the advantages of favorable surface quality, small crystal grains, favorable bending properties and favorable tensile properties, and a certain plasticity exists. Accordingly, the application area of the alloy used as soft magnetic materials is widened.

Description

Silicon three iron-based lattens of a kind of boracic, titanium, zirconium, vanadium and preparation method thereof

Technical field

The invention belongs to metal material field, the Fe of particularly a kind of intermetallic compound base soft magnetic materials-boracic, titanium, zirconium, vanadium ₃Ultra-thin plate of Si base alloy and preparation method thereof.

Background technology

Fe ₃Si base alloy has excellent soft magnetic performance, and not only be hopeful to substitute the ordinary silicon steel disc, but also be widely used as Voice ﹠ Video magnetic head materials and card reader magnetic head materials, in recent years, be the research focus of the energy and field of information processing always.Magnetics parameter that it is generally acknowledged the Fe-Si alloy changes along with the Si amount, can obtain good soft magnetic performance, the saturation magnetostriction coefficient lambda when the about 6.5wt.% of Si amount _SAlmost nil, maximum permeability μ _mReach the highest, it is minimum that iron loss reaches, and resistivity is 82 μ Ω cm, and magnetocrystalline anisotropy constant K ₁Be about half of 3%Si-Fe alloy.

Can improve magnetic property and reduce iron loss though increase the content of Si in the Fe-Si alloy,, when Si content is increased to 6.5wt.%, will inevitably produce Fe along with the increase of Si amount structure ordering occurs and is difficult to mechanical workout ₃The Si intermetallic compound, Fe ₃Si base alloy is not only crisp but also hard, is difficult to be shaped and be rolled into thin plate, and it is very crucial therefore solving its processing problems.From the long-term perspective of development and exploitation, must solve its brittle problem.If the understanding to its fragility mechanism has breakthrough, and then improve rolling and new technology preparation technology, improve the product processing characteristics, will widen its Application Areas greatly, and aspect conserve energy, can produce effect difficult to the appraisal.In today of energy growing tension, have low iron loss and low noise owing to contain the Fe-Si alloy of the about 6.5wt.% of Si, especially in the high-frequency information field, this alloy is reconsidered the equivalent material into the ordinary silicon steel disc.Given this, people make great efforts to utilize traditional forging and rolling technology successfully to make good Fe always ₃Its latten of Si is furtherd investigate the intrinsic fragility and the environment fragility mechanism of alloy, and then is found out and improve Fe ₃The approach of Si base alloy plasticity improves preparation technology, thereby improves the processing characteristics of product.

Owing to aspect fragility, also do not make great progress, utilize traditional rolling technique to prepare Fe ₃The development of Si base alloy is relatively slow.1966, (stone slope wise man youth etc. such as the Tetsuro Ishizaka of Japan, cold calendering of 6.5%Si-Fe alloy と magnetism characteristic, Japan's Metallkunde meeting will, 1966,30:552-558) delivered the experimental result of utilizing hot rolling-cold-rolling practice can prepare 0.3mm Fe-6.5wt.%Si latten first.After 23 years, 1989, the Yoshikazu Takada etc. of Japan delivered their result of study of the 6.5%Si latten of commercial mass production non orientation for the first time in the world again.But the method for their usefulness has two kinds: first kind is general hot rolling technology, is used to produce thick relatively thin plate, and second kind is the thin plate that the CVD method is used for the production relative thin.

Tanya Ros (the Tanya Ros that calendar year 2001 is Belgian and German, Yvan Houbaert, et al.Thermomechanical Processing of High Si-steel (Up to 6.3%Si), IEEE Transactions onMgnetics, Vol.37, No.4, July 2001,2321-2324), J.Schneider (T.Ros

Y.Houbaert, et al.Experimental Thermomechanical Processing of High Si-Steels (upto 6.5%Si) .Materials Science Forum Vol.373-376,2001,773-776) prepare the 6.3wt.%Si thin plate of 0.5mm with hot rolling-cold rolling process, they proposed to cast back hot rolling and cold rolling this latten that can obtain 0.4mm in 2003.

But in above-mentioned alloy, be not worked into up to now, the example of the thin plate of 0.10～0.30mm.

Summary of the invention

The present invention seeks to find a kind of Fe of improvement ₃The approach of Si base alloy plasticity improves preparation technology, thereby improves the processing characteristics of product, and rolling thinner steel plate is widened Fe ₃Si base alloy is as the Application Areas of soft magnetic materials.

Boron is at metal or Ni ₃Can strengthen intercrystalline combination in the alloy of intermetallic compounds such as Al, grain-size and aspect of performance are had very big influence.Trace alloying elements such as Ti, Zr, V can improve Fe ₃The hot rolling performance of Si base alloy.At Fe ₃The unmanageable feature of Si base alloy adopts suitable boron content and micro-alloy element can realize grain refining and grain-boundary strengthening to this alloy, improves toughness, ductility and the processing characteristics of this alloy.

The Fe of a kind of boracic, titanium, zirconium, vanadium ₃Si base latten, Fe content is 92～93% in the thin plate, Si content is 6～7%, it is characterized in that having added in the alloy boron of 200～580ppm and 0.5～1% Ti, Zr and V.

Produce the Fe of boracic, titanium, zirconium, vanadium ₃The processing condition of Si base latten are as follows

(1) raw material is prepared: the amount of pure iron, silicon, ferro-boron and trace element, the scope of the silicone content that obtain are that the content of 6.0～7.0% (weight ratios), boron is that the total content of 200～580ppm, Ti, Zr and V is 0.5～1% (weight ratio).

(2) smelt: use vacuum melting furnace, pack into earlier pure iron and ferro-boron, the casting of fusing back reinstalled trace alloying element in the past.

(3) ingot casting annealing: 1050 ℃-1200 ℃ following 50-100 hour.

(4) forge: forge into the slab that thickness is 12～14mm at 1000 ℃～800 ℃.

(5) hot rolling: roll to 5～3mm at 1000 ℃～800 ℃, roll to 2.5～1.5mm at 780～700 ℃ then.

(6) hot-rolled sheet annealing: be put into cooling fast in the icy salt solution after 1.5～2.5 hours 780～740 ℃ of insulations.

(7) warm-rolling:, obtain the Fe that thickness is 0.1～0.30mm at 500～350 ℃ of warm-rollings ₃Si base latten.

The present invention adopts alloyage process and improves the processing characteristics that hot rolling, warm-rolling and thermal treatment process have improved this alloy, and utilizes traditional forging and rolling equipment successfully to prepare the Fe that thickness is 0.10～0.30mm ₃Si base latten, the plate surface quality is good, and crystal grain is tiny, bending property and tensile property are good, and has certain plasticity.Thereby widened the Application Areas of this alloy as soft magnetic material.

Description of drawings

Fig. 1 is the warm-rolling thin sheet surface quality front view of 0.1mm～0.3mm for thickness

Fig. 2 is the warm-rolling thin sheet surface quality side-view of 0.1mm～0.3mm for thickness

Fig. 3 is the microtexture of 0.1mm～0.30mm warm-rolling plate for thickness

Embodiment

Embodiment 1, (1) raw material prepare: the amount of pure iron, silicon, ferro-boron and trace element, the scope of the silicone content that obtain are that the content of 6.0% (weight ratio), boron is that the total content of 200ppm, Ti, Zr and V is 0.5～1% (weight ratio).

(2) smelt: use vacuum melting furnace, pack into earlier pure iron and ferro-boron, the casting of fusing back reinstalled trace alloying element in the past.

(3) ingot casting annealing: 1050 ℃ following 50 hours.

(4) forge: forge into the slab that thickness is 12～14mm at 850 ℃.

(5) hot rolling: roll to 5～3mm at 850 ℃, roll to 2.5～1.5mm at 780～700 ℃ then.

(6) hot-rolled sheet annealing: be put into cooling fast in the icy salt solution after 1.5 hours 740 ℃ of insulations.

(7) warm-rolling:, obtain the Fe that thickness is 0.1～0.30mm at 450 ℃ of warm-rollings ₃Si base latten.

Embodiment 2, (1) raw material prepare: the amount of pure iron, silicon, ferro-boron and trace element, the scope of the silicone content that obtain are that the content of 6.5% (weight ratio), boron is that the total content of 300ppm, Ti, Zr and V is 0.5～1% (weight ratio).

(2) smelt: use vacuum melting furnace, pack into earlier pure iron and ferro-boron, the casting of fusing back reinstalled trace alloying element in the past.

(3) ingot casting annealing: 1100 ℃ following 70 hours.

(4) forge: forge into the slab that thickness is 12～14mm at 900 ℃.

(5) hot rolling: roll to 5～3mm at 900 ℃, roll to 2.5～1.5mm at 780～700 ℃ then.

(6) hot-rolled sheet annealing: be put into cooling fast in the icy salt solution after 2 hours 760 ℃ of insulations.

(7) warm-rolling:, obtain the Fe that thickness is 0.1～0.30mm at 500 ℃ of warm-rollings ₃Si base latten.

Embodiment 3, (1) raw material prepare: the amount of pure iron, silicon, ferro-boron and trace element, the scope of the silicone content that obtain are that the content of 7.0% (weight ratio), boron is that the total content of 500ppm, Ti, Zr and V is 0.5～1% (weight ratio).

(2) smelt: use vacuum melting furnace, pack into earlier pure iron and ferro-boron, the casting of fusing back reinstalled trace alloying element in the past.

(3) ingot casting annealing: 1100 ℃ following 100 hours.

(4) forge: forge into the slab that thickness is 12～14mm at 950 ℃.

(5) hot rolling: roll to 5～3mm at 950 ℃, roll to 2.5～1.5mm at 780～700 ℃ then.

(6) hot-rolled sheet annealing: be put into cooling fast in the icy salt solution after 2 hours 780 ℃ of insulations.

(7) warm-rolling:, obtain the Fe that thickness is 0.1～0.30mm at 450 ℃ of warm-rollings ₃Si base latten.

Embodiment 4, (1) raw material prepare: the amount of pure iron, silicon, ferro-boron and trace element, the scope of the silicone content that obtain are that the content of 6.8% (weight ratio), boron is that the total content of 550ppm, Ti, Zr and V is 0.5～1% (weight ratio).

(2) smelt: use vacuum melting furnace, pack into earlier pure iron and ferro-boron, the casting of fusing back reinstalled trace alloying element in the past.

(3) ingot casting annealing: 1200 ℃ following 100 hours.

(4) forge: forge into the slab that thickness is 12～14mm at 1000 ℃.

(5) hot rolling: roll to 5～3mm at 100 ℃, roll to 2.5～1.5mm at 780～700 ℃ then.

(6) hot-rolled sheet annealing: be put into cooling fast in the icy salt solution after 2 hours 760 ℃ of insulations.

(7) warm-rolling:, obtain the Fe that thickness is 0.1～0.30mm at 500 ℃ of warm-rollings ₃Si base latten.

Claims (2)

1. the Fe of a boracic, titanium, zirconium, vanadium ₃Si base latten, Fe content is 92～93% in the thin plate, Si content is 6～7%, it is characterized in that having added in the alloy boron of 200～580ppm and 0.5～1% Ti, Zr and V.

2. the Fe of boracic as claimed in claim 1, titanium, zirconium, vanadium ₃The preparation method of Si base latten is characterized in that processing condition are

(1) raw material is prepared: the amount of pure iron, silicon, ferro-boron and trace element, the scope of the silicone content that obtain are that the content of 6.0～7.0% (weight ratios), boron is that the total content of 200～580ppm, Ti, Zr and V is 0.5～1% (weight ratio);

(2) smelt: use vacuum melting furnace, pack into earlier pure iron and ferro-boron, the casting of fusing back reinstalled trace alloying element in the past;

(3) ingot annealing: 1050 ℃-1200 ℃ following 50-100 hour;

(4) forge: forge into the slab that thickness is 12～14mm at 1000 ℃～800 ℃;

(5) hot rolling: roll to 5～3mm at 1000 ℃～800 ℃, roll to 2.5～1.5mm at 780～700 ℃ then;

(6) hot-rolled sheet annealing: be put into cooling fast in the icy salt solution after 1.5～2.5 hours 780～740 ℃ of insulations;

(7) warm-rolling:, obtain the Fe that thickness is 0.1～0.30mm at 500～350 ℃ of warm-rollings ₃Si base latten.

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