阅读说明：本技术 一种高表面质量、高强度镍合金带材的制备方法 (A kind of preparation method of great surface quality, high-intensity nickel alloy band ) 是由 陈存广 徐建勋 于 2019-09-20 设计创作，主要内容包括：本发明属于镍带材加工技术领域,具体涉及一种高表面质量、高强度镍合金带材的制备方法。本发明在精炼过程中添加脱氧剂,并将纯镍与纯钇真空熔铸成镍钇合金方坯,在空气中预热后进行热轧,表面生成Ni<Sub>2</Sub>O<Sub>3</Sub>/Y<Sub>2</Sub>O<Sub>3</Sub>复合氧化物,经氢气还原退火后生成Ni/Y<Sub>2</Sub>O<Sub>3</Sub>,冷轧成带材,镍钇合金方坯在空气中预热时表面生成纳米氧化钇,可提高表面硬度、基体强度及抗高温氧化能力,在热/冷轧加工过程中可提高板带材表面光洁度和表面精度,由于氧化钇颗粒尺寸为纳米级,含量很少(质量分数＜0.2%),对镍材的导热导电性能影响很小。制得的镍合金带材能够同时提高镍带材的强度、硬度和表面质量,以满足目前对高表面质量镍合金带材的市场需求。(The invention belongs to nickel strap material processing technique fields, and in particular to the preparation method of a kind of great surface quality, high-intensity nickel alloy band.The present invention adds deoxidier in refining process, and pure nickel and pure yttrium vacuum casting are carried out hot rolling, Surface Creation Ni after preheating in air at nickel yittrium alloy square billet 2 O 3 /Y 2 O 3 Composite oxides generate Ni/Y after hydrogen reducing is annealed 2 O 3 It is cold rolled to band, Surface Creation nano yttrium oxide when nickel yittrium alloy square billet preheats in air, surface hardness, matrix strength and oxidation-resistance property can be improved, Strip surface smoothness and surface accuracy can be improved in hot/cold rolled process, since yttria particles are having a size of nanoscale, content seldom (mass fraction < 0.2%), on the thermal conductivity of nickel material influences very little.Nickel alloy strip obtained can improve the intensity, hardness and surface quality of nickel strap material simultaneously, to meet at present to the market demand of great surface quality nickel alloy strip.)

1. the preparation method of a kind of great surface quality, high-intensity nickel alloy band, which comprises the following steps:

(1) prepared by nickel yittrium alloy square billet: in vacuum degree being (2~3) × 10 by pure nickel and pure yttrium raw metal^-2MPa and temperature To be melted to melt in 1430~1453 DEG C of vacuum induction melting furnaces and boiling refining 1 ~ 2 minute, vacuum sense is adjusted after refining It answers the temperature of smelting furnace to 1200~1250 DEG C, adds deoxidier, refine 8 ~ 12 minutes, alloy molten solution is cast in metal thereafter It is frozen into alloy square billet in pattern tool, the mass fraction of yttrium is 0.02% ~ 0.1% in alloy；

(2) square billet preheats: above-mentioned alloy square billet being preheated in air-heating furnace, heating temperature is 800 ~ 1200 DEG C, in alloy Surface Creation Ni₂O₃/Y₂O₃Composite oxides；

(3) hot rolling: above-mentioned preheating square billet is subjected to multistage hot deformation, rolls into the plate of required thickness；

(4) reduced anneal: hot rolled plate is heated in hydrogen reducing furnace, and reduction temperature is 400 ~ 800 DEG C, makes plate surface shape At the nanometer Y of high rigidity₂O₃Dispersion-strengtherning nickel thin layer；

(5) cold rolling: the plate after reduced anneal is subjected to cold rolling and is processed into great surface quality high duty metal band.

2. the preparation method of great surface quality according to claim 1, high-intensity nickel alloy band, which is characterized in that step Suddenly the melting stage of vacuum induction melting furnace described in (1) is appropriately extended, and extended range is 45~50 minutes.

3. the preparation method of great surface quality according to claim 1, high-intensity nickel alloy band, which is characterized in that step Suddenly it is filled with a small amount of inert gas before melt casting in (1), and carries out electrification casting, casting process is first quick and back slow.

4. the preparation method of great surface quality according to claim 1, high-intensity nickel alloy band, which is characterized in that institute The mass ratio for stating deoxidier and pure nickel is 0.31% ~ 0.45%, and wherein deoxidier is carbon, titanium, aluminium, nickel magnesium alloy and rare earth metal Mixture.

5. the preparation method of great surface quality according to claim 4, high-intensity nickel alloy band, which is characterized in that press Weight fraction meter includes 7.92% ~ 16.44% carbon, 6.93% ~ 15.07% titanium, 12.87% ~ 24.66% in the deoxidier Aluminium, 29.70% ~ 54.79% nickel magnesium alloy, 14.85% ~ 27.40% rare earth metal.

Technical field

The invention belongs to nickel material processing technique fields, and in particular to a kind of great surface quality, high-intensity nickel alloy band Preparation method.

Background technique

Pure nickel possesses excellent mechanical property, has higher function against corrosion in a variety of varying environments, also possesses mangneto The features such as retractility and magnetism, high thermal conductivity, high conductivity, low gas flow and low vapor pressure, has good spot welding characteristics, Tensile stress is high, and resistivity is low, mainly for the manufacture of nickel-metal hydride battery, lithium battery, assembled battery and electric tool, communication information, The industries such as special bulb.

For nickel strap material after perfect recrystallization is heat-treated, it is low to show as intensity, transport it is easily-deformable in manufacturing process, become it is deep plus Work a great problem.Meanwhile in nickel material rolling process, it may appear that heating temperature is higher, and severe oxidation problem occurs in surface, In addition surface hardness is low, causes nickel surface quality of strips to decline in rolling process, cause defect rate to improve, seriously affect Business Economic Benefit.It has been reported that at present through trace alloying element solution strengthening and improves nickel strap intensity and hardness, improve surface Quality, but have little effect.The defect of inside ingot includes shrinkage cavity, loose, stomata, be mingled with, crackle, coarse grains etc., these are lacked Fall into that influence to product quality is extremely serious, be cause processing layered, roll split, the root of peeling, the waste products such as open one's mouth, often make At scrapping for a large amount of finished products, founding condition is to determine the key factor of casting quality.

Summary of the invention

Technical problem to be solved by the present invention lies in view of the above shortcomings of the prior art, provide a kind of high surface matter Amount, the preparation method of high-intensity nickel alloy band.The present invention adds deoxidier in refining process, and by pure nickel and pure yttrium vacuum Founding carries out hot rolling, Surface Creation Ni after preheating in air at nickel yittrium alloy square billet₂O₃/Y₂O₃Composite oxides, through hydrogen Ni/Y is generated after reduced anneal₂O₃, be cold rolled to band, nickel alloy strip obtained can improve simultaneously nickel strap material mechanical strength, Hardness and surface quality, to meet at present to the market demand of great surface quality nickel alloy strip.

In order to solve the above technical problems, the technical solution adopted by the present invention is that: a kind of great surface quality, high-intensity nickel alloy The preparation method of band, which is characterized in that the nickel alloy strip preparation method has the feature that

A kind of preparation method of great surface quality, high-intensity nickel alloy band, comprising the following steps:

(1) prepared by nickel yittrium alloy square billet: in vacuum degree being (2~3) × 10 by pure nickel and pure yttrium raw metal^-2MPa and temperature To be melted to melt in 1430~1453 DEG C of vacuum induction melting furnaces and boiling refining 1 ~ 2 minute, vacuum sense is adjusted after refining It answers the temperature of smelting furnace to 1200~1250 DEG C, adds deoxidier, refine 8 ~ 12 minutes, alloy molten solution is cast in metal thereafter It is frozen into alloy square billet in pattern tool, the mass fraction of yttrium is 0.02% ~ 0.1% in alloy；

(2) square billet preheats: above-mentioned alloy square billet being preheated in air-heating furnace, heating temperature is 800 ~ 1200 DEG C, in alloy Surface Creation Ni₂O₃/Y₂O₃Composite oxides；

(3) hot rolling: above-mentioned preheating square billet is subjected to multistage hot deformation, rolls into the plate of required thickness；

(4) reduced anneal: hot rolled plate is heated in hydrogen reducing furnace, and reduction temperature is 400 ~ 800 DEG C, makes plate surface shape At the nanometer Y of high rigidity₂O₃Dispersion-strengtherning nickel thin layer；

(5) cold rolling: the plate after reduced anneal is subjected to cold rolling and is processed into great surface quality high duty metal band.

The melting stage of vacuum induction melting furnace described in step (1) is appropriately extended, and extended range is 45~50 minutes.

It is filled with a small amount of inert gas before melt casting in step (1), and carries out electrification casting, casting process is first quick and back slow.

The mass ratio of the deoxidier and pure nickel be 0.31% ~ 0.45%, wherein deoxidier be carbon, titanium, aluminium, nickel magnesium alloy and The mixture of rare earth metal.

Score meter by weight includes 7.92% ~ 16.44% carbon, 6.93% ~ 15.07% titanium, 12.87% in the deoxidier ~ 24.66% aluminium, 29.70% ~ 54.79% nickel magnesium alloy, 14.85% ~ 27.40% rare earth metal.

Compared with prior art, the invention has the following advantages that

For the present invention by pure nickel and pure yttrium vacuum casting at nickel yittrium alloy square billet, nickel yittrium alloy square billet carries out heat after preheating in air It rolls, Surface Creation Ni₂O₃/Y₂O₃Composite oxides generate Ni/Y after hydrogen reducing is annealed₂O₃, it is cold rolled to band, nickel yittrium alloy Surface hardness, matrix strength and oxidation-resistance property can be improved in Surface Creation nano yttrium oxide when square billet preheats in air, Strip surface smoothness and surface accuracy can be improved in hot/cold rolling process, be mainly manifested in following aspect:

(1) present invention improves surface hardness, favorably by forming high hardness nanocomposite yttria dispersion strengthening nickel in nickel plate material In improving surface smoothness and surface accuracy in rolling process, to improve yield rate.

(2) dispersion-strengthened action of nano yttrium oxide makes nickel strap material have excellent oxidation resistance, improves substrate Mechanical property influences the performances such as conductive and heat-conductive little.Since yttria particles are having a size of nanoscale, content seldom (quality point Number < 0.2%), therefore very little is influenced on the thermal conductivity of nickel material.

(3) effect of addition deoxidation, degassing and the impurity removal of refining period novel deoxidizer for use is more preferable, the densification of cast structure Property is improved, and further improves the mechanical strength and hardness of nickel strap material.

(4) it is filled with a small amount of inert gas before casting, it is miscellaneous in cylinder liquid stream when can prevent casting from splashing and casting is sucked out Gas, the cylinder water under vacuum has higher liquid fluidity, therefore ingot casting becomes more closely knit, can pour to cast out and meets quality and want The billet asked provides qualified billet for subsequent production.

Technical solution of the present invention is described in further detail below by specific embodiment.

Specific embodiment