CN1255565C - Low beryllium content copper alloy for crystallizing roller for continuously casting thin band and its production - Google Patents
Low beryllium content copper alloy for crystallizing roller for continuously casting thin band and its production Download PDFInfo
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- CN1255565C CN1255565C CN 02136307 CN02136307A CN1255565C CN 1255565 C CN1255565 C CN 1255565C CN 02136307 CN02136307 CN 02136307 CN 02136307 A CN02136307 A CN 02136307A CN 1255565 C CN1255565 C CN 1255565C
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Abstract
The present invention provides a low-Be copper alloy for continuous casting thin-band crystallizing rollers and production technology thereof. Elements, such as Ni, Si, Zr and Re, are added on the basis of the low-Be copper alloy to perform the function that alloy elements react with each other; the smelted alloy is cast into a cast ingot or a cast blank, and the cast blank is forged in the hot state; solution treatment is carried out to the forged cast ingot in the hot state; the cast blank is quenched in water; and then, processing steps of cold deformation, heat preservation and aging treatment are carried out to the cast blank. A low-Be copper alloy material which has high intensity and high heat conductivity and accords with continuous casting thin-band crystallizing rollers is obtained.
Description
Technical field
The present invention relates to a kind of low beryllium content copper alloy and production technique thereof, relate in particular to a kind of low beryllium content copper alloy for crystallizing roller for continuously casting thin band and production technique thereof.
Background technology
Thin strap continuous casting is exactly the crystallization roller of molten steel through high speed rotating, and is frozen into the 1-5mm Cast Strip under the effect of rolling load.Overheated and the crystallization latent heat of molten steel will be taken away heat through water-cooled crystallization roller, and solidifies on the crystallization roller, and the effect that two solidified shell locate to merge rolling load " point coincide " down and the formation Cast Strip.Crystallization roller one side contacts with molten steel; Another side is the water-cooled face, stands the effect of rolling load simultaneously.This requires crystallization roller material to have: 1) good thermal conductivity; 2) high strength and high rigidity; 3) emergency heat and cooling property resistance chilling performance; 4) anti-fatigue performance of heat-resisting alternation.
For the contradiction that exists between copper alloy intensity and heat conduction, electroconductibility.According to the alloying theory, alloying level is high more, and the intensity of alloy is just high, but heat conduction and poorly conductive; Otherwise specific conductivity raises, and intensity then reduces.Be widely applied to the intensity HBS:120-135Mpa of alloy series such as the Cu-Ag alloy of continuous cast mold and Cr-Zr-Cu, can not satisfy the requirement of strength of thin band continuous casting crystallization roller far away.
Beraloy is an ageing strengthening effect highly significant, and also the hardest copper alloy is as QBe
2, QBe
1.9, QBe
1.7Deng Be content 1.5-2.8% copper alloy series.This series copper alloy has high strength, and HBS can reach 350-400MPa, because the atomic radius of Be much smaller than copper atom, therefore adds more Be, has reduced thermal conductivity and electroconductibility.Therefore to add a spot of other alloying element, by the interaction between alloying element, form compound or multiple strengthenings such as solution strengthening, crystal grain thinning reinforcement, cold deformation and ageing strengthening, when reducing the Be consumption, improve intensity and conduction, thermal conductivity.
U.S. Pat 6,083,328 disclose a kind of thin strap continuous casting crystallization roller copper alloy material, the composition range of its alloy is: Be content 0.1-0.45%, Ni or Co content 1-2.6%, add the Zr of 0.05-0.25%, Ce, Cr simultaneously, Ta, in the elements such as Ha one or more, its hardness of alloy＞HBS200, electric conductivity＞60%IACS.Owing to need to add Zr, Ce, Cr, Ta, one or more make and smelt the production operation complexity in the Ha metal, and recovery rate of iron is difficult to guarantee, and cause expensive.
Summary of the invention
In view of existing situation, the object of the present invention is to provide a kind of low beryllium content copper alloy for crystallizing roller for continuously casting thin band and production technique thereof.The present invention adds Ni on low Be copper alloy basis, Si, Zr, Re element, and the interactional advantage of performance alloying element, and by proper heat treatment technology, obtain high strength and high thermal conductivity and reach copper alloy material cheaply.
Low beryllium content copper alloy for crystallizing roller for continuously casting thin band of the present invention, its composition weight percent is: a kind of low beryllium content copper alloy for crystallizing roller for continuously casting thin band, and its composition weight percent is: Be:0.10～0.30%, Ni:1.0～2.5%, Si:0.05～0.30%, Zr:0.01～0.20%, compound Re＜0.05%, all the other are Cu; Wherein, 8: 1＜Ni/Si＜20: 1;
Pour into ingot casting or strand by the alloy after the mentioned component smelting, ingot casting or strand are carried out forge hot, the hot forging temperature interval is 900～600 ℃, forge hot draft＞40%; Ingot casting after the forge hot or strand are carried out solution treatment, and treatment temp is 900～1080 ℃, and the treatment time is 5～10h; Ingot casting or strand are at quenching-in water; Ingot casting or strand are carried out 25～35% cold deformations; And insulation, ageing treatment, under 400～550 ℃ of temperature, be incubated 8～30h, carry out ageing treatment.
Further, described low beryllium content copper alloy composition weight percent is: Be:0.10～0.20%, Ni:1.0～2.5%, Si:0.05～0.30%, Zr:0.01～0.10%, compound Re＜0.05%, all the other are Cu; Wherein, 10: 1＜Ni/Si＜20: 1.
The production technique of low beryllium content copper alloy for crystallizing roller for continuously casting thin band of the present invention comprises:
The composition weight percent of low beryllium content copper alloy is: Be:0.10～0.30%, Ni:1.0～2.5%, Si:0.05～0.30%, Zr:0.01～0.20%, compound Re＜0.05%, all the other are Cu; Wherein, 8: 1＜Ni/Si＜20: 1;
Pour into ingot casting or strand by the alloy after the mentioned component smelting, ingot casting or strand are carried out forge hot, the hot forging temperature interval is 900～600 ℃, forge hot draft＞40%; Ingot casting after the forge hot or strand are carried out solution treatment, and treatment temp is 900～1080 ℃, and the treatment time is 5～10h; Ingot casting or strand carry out 25～35% cold deformations to ingot casting or strand after quenching-in water; Again to ingot casting or strand be incubated, ageing treatment, under 400～550 ℃ of temperature, be incubated 8～30h.
Again, the production technique of low beryllium content copper alloy for crystallizing roller for continuously casting thin band of the present invention can also be, the alloy after smelting by mentioned component pours into ingot casting or strand, and ingot casting or strand are carried out forge hot, and the hot forging temperature interval is 900～600 ℃, forge hot draft＞40%; Ingot casting after the forge hot or strand are carried out solution treatment, and treatment temp is 900～1080 ℃, and the treatment time is 5～10h; Ingot casting or strand are after quenching-in water, and ingot casting or strand are incubated, ageing treatment, are incubated 8～30h under 400～550 ℃ of temperature; Again ingot casting or strand are carried out 25～35% cold deformations.
In the production technique of low beryllium content copper alloy for crystallizing roller for continuously casting thin band of the present invention, described low beryllium content copper alloy composition weight percent can also for:
Be：0.1～0.2％
Ni：1.0～～2.5％
Si：0.05～～0.30％
Zr：0.01～0.10％
Compound Re＜0.05%
All the other are Cu;
Wherein, 10: 1＜Ni/Si＜20: 1.
The present invention adds Ni on low Be copper alloy basis, Si, Zr, the interactional advantage of Re element performance alloying element, and, obtain the copper alloy material of high strength and high thermal conductivity by proper heat treatment technology.Both utilized the very strong solution strengthening effect of Be element, and added Ni simultaneously and suppress the crystal boundary reaction, slowed down ag(e)ing process, further strengthened; Add Si and make that the timeliness precipitate has δ-Ni in the alloy
2The crystalline structure that Si is similar plays strengthening effect.Simultaneously must the suitable Ni/Si ratio of control, when Si for a long time, unnecessary strengthening element will exist with the solid solution atomic form.Solid solution attitude Si element is very big to conduction, the thermal conductivity infringement of copper alloy, and solid solution attitude Ni is less to conduction, the thermal conductivity infringement of copper alloy.Zr also is that actual effect is strengthened element clearly, can increase the plasticity of alloy.Add Re and play the crystal grain thinning effect.
The present invention can access the low beryllium content copper alloy for crystallizing roller for continuously casting thin band product of high conductivity, thermal conductivity and high strength and high softening temperature by rational heat treatment technology and suitable Ni/Si ratio.Production technique of the present invention has satisfactory stability advantage cheaply simultaneously.
The performance of product reaches: HBS＞200; Softening temperature＞600 ℃; Electric conductivity IACS%:55～70%.
Embodiment
Embodiment
Production technique (1)
Copper alloy after smelting is poured into ingot casting or strand, with 900～600 ℃ of temperature range forge hots of strand (rolling), forge hot (rolling) draft＞40%; 900～1080 ℃ of solution treatment, the treatment time is 5～10h with the ingot casting after the forge hot (base); With ingot casting (base) at quenching-in water; Strand or ingot casting are heated to 400～550 ℃, and insulation 8～30h carries out ageing treatment; Ingot casting (base) is carried out 25～35% cold deformations.
Production technique (2)
Copper alloy after smelting is poured into ingot casting or strand, with 900～600 ℃ of temperature range heat of strand, forge (rolling), forge hot (rolling) draft＞40%: 900～1080 ℃ of solution treatment, the treatment time is 5～10h with the ingot casting after the forge hot (base); With strand at quenching-in water; Strand is carried out 25～35% cold deformations; Then strand or ingot casting are heated to 400～550 ℃, insulation 8～30h carries out ageing treatment;
Produce low beryllium content copper alloy for crystallizing roller for continuously casting thin band of the present invention by each alloying constituent in the following table 1 respectively, aforesaid production technique of method (1) or production technique (2)
Table 1
| Sequence number | Be | Ni | Si | Zr | Re | Cu | Production technique | Hardness HBS | Electric conductivity ACS% | Softening temperature ℃ |
| Embodiment 1 | 0.10 | 1.60 | 0.20 | 0.10 | ＜0.05 | Surplus | (1) | 203 | 66 | 680 |
| Embodiment 2 | 0.10 | 2.00 | 0.10 | 0.20 | ＜0.05 | Surplus | (1) | 213 | 59 | 680 |
| Embodiment 3 | 0.17 | 2.10 | 0.20 | 0.15 | ＜0.05 | Surplus | (2) | 245 | 65.6 | 650 |
| Embodiment 4 | 0.17 | 2.10 | 0.15 | 0.14 | ＜0.05 | Surplus | (2) | 251 | 60 | 600 |
| Embodiment 5 | 0.28 | 2.56 | 0.18 | 0.12 | ＜0.05 | Surplus | (1) | 258 | 55 | 600 |
| Embodiment 6 | 0.22 | 2.45 | 0.25 | 0.10 | ＜0.05 | Surplus | (1) | 241 | 55.6 | 600 |
| Comparative Examples US6,083,328 (N) | 0.32 | 2.07 | 0 | 0.18 | 0 | Surplus | 220 | 62 |
As shown in Table 1, the low beryllium content copper alloy of processing method production of the present invention meets thin band continuous casting crystallization roller alloy requirement fully.
Claims (4)
1. low beryllium content copper alloy for crystallizing roller for continuously casting thin band, its composition weight percent is: Be:0.1～0.3%, Ni:1.0～2.5%, Si:0.05～0.30%, Zr:0.01～0.20%, compound Re＜0.05%, all the other are Cu; Wherein, 8: 1＜Ni/Si＜20: 1;
Pour into ingot casting or strand by the alloy after the mentioned component smelting, ingot casting or strand are carried out forge hot, the hot forging temperature interval is 900～600 ℃, forge hot draft＞40%; Ingot casting after the forge hot or strand are carried out solution treatment, and treatment temp is 900～1080 ℃, and the treatment time is 5～10h, and ingot casting or strand are at quenching-in water; Ingot casting or strand are carried out 25～35% cold deformations; And insulation, ageing treatment, be incubated 8～30h under 400～550 ℃ of temperature.
2. low beryllium content copper alloy for crystallizing roller for continuously casting thin band as claimed in claim 1, it is characterized in that described low beryllium content copper alloy composition weight percent is: Be:0.10～0.20%, Ni:1.0～2.5%, Si:0.05～0.30%, Zr:0.01～0.10%, compound Re＜0.05%, all the other are Cu; Wherein, 10: 1＜Ni/Si＜20: 1.
3. the production technique of a low beryllium content copper alloy for crystallizing roller for continuously casting thin band comprises:
The composition weight percent of low beryllium content copper alloy is: Be:0.1～0.3%, Ni:1～2.5%, Si:0.05～0.3%, Zr:0.01～0.2%, compound Re＜0.05%, all the other are Cu; Wherein, 8: 1＜Ni/Si＜20: 1
Pour into ingot casting or strand by the alloy after the mentioned component smelting, ingot casting or strand are carried out forge hot, the hot forging temperature interval is 900～600 ℃, forge hot draft＞40%; Ingot casting after the forge hot or strand are carried out solution treatment, and treatment temp is 900～1080 ℃, and the treatment time is 5～10h; Ingot casting or strand carry out 25～35% cold deformations at quenching-in water to ingot casting or strand, again to ingot casting or strand be incubated, ageing treatment, be incubated 8～30h under 400～550 ℃ of temperature.
4. the production technique of a low beryllium content copper alloy for crystallizing roller for continuously casting thin band comprises:
The composition weight percent of low beryllium content copper alloy is: Be:0.1～0.3%, Ni:1～2.5%, Si:0.05～0.3%, Zr:0.01～0.2%, compound Re＜0.05%, all the other are Cu; Wherein, 8: 1＜Ni/Si＜20: 1;
Pour into ingot casting or strand by the alloy after the mentioned component smelting, ingot casting or strand are carried out forge hot, the hot forging temperature interval is 900～600 ℃, forge hot draft＞40%; Ingot casting after the forge hot or strand are carried out solution treatment, and treatment temp is 900～1080 ℃, and the treatment time is 5～10h; Ingot casting or strand are at quenching-in water, and quenching is incubated afterwards, ageing treatment, is incubated 8～30h under 400～550 ℃ of temperature, again ingot casting or strand is carried out 25～35% cold deformations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02136307 CN1255565C (en) | 2002-07-30 | 2002-07-30 | Low beryllium content copper alloy for crystallizing roller for continuously casting thin band and its production |
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| CN 02136307 CN1255565C (en) | 2002-07-30 | 2002-07-30 | Low beryllium content copper alloy for crystallizing roller for continuously casting thin band and its production |
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| CN1472352A CN1472352A (en) | 2004-02-04 |
| CN1255565C true CN1255565C (en) | 2006-05-10 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100486756C (en) * | 2004-11-19 | 2009-05-13 | 杨庆来 | Die forging production technology for hard copper alloy explosion-proof instrument |
| CN102212712A (en) * | 2011-05-20 | 2011-10-12 | 李希涛 | Beryllium copper alloy, copper bush for amorphous and/or nano crystal strip production equipment and preparation method |
| CN102220512A (en) * | 2011-05-30 | 2011-10-19 | 北京中钢贸科技发展有限公司 | Chilling roll sleeve and method for producing the same through rapid solidification |
| CN102527961B (en) * | 2011-12-28 | 2016-06-01 | 烟台万隆真空冶金股份有限公司 | A kind of copper sleeve for strip continuous casting crystallization roller and manufacture method thereof |
| CN107574334A (en) * | 2016-07-04 | 2018-01-12 | 遵义拓特铸锻有限公司 | A kind of beallon and preparation method thereof |
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