CN103498075B - Preparation method of deformation-resistant high-temperature alloy and deformation-resistant high-temperature alloy part - Google Patents
Preparation method of deformation-resistant high-temperature alloy and deformation-resistant high-temperature alloy part Download PDFInfo
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- CN103498075B CN103498075B CN201310395183.7A CN201310395183A CN103498075B CN 103498075 B CN103498075 B CN 103498075B CN 201310395183 A CN201310395183 A CN 201310395183A CN 103498075 B CN103498075 B CN 103498075B
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- 238000002360 preparation method Methods 0.000 title claims abstract description 31
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical class data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 17
- 239000000956 alloy Substances 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 34
- 238000005242 forging Methods 0.000 claims abstract description 22
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 18
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 15
- 239000012535 impurity Substances 0.000 claims abstract description 11
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 10
- 229910052803 cobalt Inorganic materials 0.000 claims abstract description 10
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 10
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 10
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 8
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 7
- 229910052742 iron Inorganic materials 0.000 claims abstract description 7
- 238000002844 melting Methods 0.000 claims description 28
- 229910000831 Steel Inorganic materials 0.000 claims description 24
- 239000010959 steel Substances 0.000 claims description 24
- 238000005266 casting Methods 0.000 claims description 15
- 239000002994 raw material Substances 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 10
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials 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[Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 8
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- 229910052734 helium Inorganic materials 0.000 claims description 8
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium(0) Chemical compound 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Abstract
The invention provides a deformation-resistant high-temperature alloy and a preparation method thereof. With the preparation method, quality of a deformation-resistant high-temperature alloy ingot is improved, thermo-plasticity of the deformation-resistant high-temperature alloy is improved, and cracking during a forging thermal processing process is prevented. The deformation-resistant high-temperature alloy comprises the contents of, by weight: no less than 0% and no more than 0.1% of C, no less than 16.5% and no more than 19.5% of Cr, no less than 13.5% and no more than 16.0% of Co, no less than 1.0% and no more than 2.0% of W, no less than 2.5% and no more than 3.5% of Mo, no less than 2.0% and no more than 3.0% of Al, no less than 4.5% and no more than 5.5% of Ti, no less than 0% and no more than 1.0% of Fe, no less than 0.01% and no more than 0.03% of B, no less than 0% and no more than 0.06% of Zr, no less than 0% and no more than 0.002% of S, no less than 0% and no more than 0.15% of Si, no less than 0% and no more than 0.15% of Mn, and balance of Ni and inevitable impurities.
Description
Technical field
The present invention relates to alloy smelting field, specifically, relate to the preparation method of a kind of male sportsman and a kind of male sportsman part, this preparation method can improve the cracking in the quality of male sportsman part, the thermoplasticity improving male sportsman part and prevention forging hot procedure.
Background technology
When preparing male sportsman part, specifically, in the forging hot procedure of male sportsman part, resistance to deformation is large, and texturing temperature interval is narrow, hot-workability is poor, easily ftracture in thermal processing distortion process, need increase polishing number of times and hot-work fire just can become a useful person, thus reduce the lumber recovery of male sportsman part, add energy consumption and labour cost, even cause scrapping of whole steel ingot or blank, cause huge financial loss.
Summary of the invention
For the deficiencies in the prior art, an object of the present invention is to solve in above-mentioned prior art the one or more problems existed.
The object of the invention is to improve male sportsman clarity by optimizing smelting, casting process parameters and ingot shape, improve ingot quality, thus improve male sportsman thermoplasticity, and isothermal holding technique is carried out in forging hot procedure, adopt arc anvil (or V-type anvil) draw out technique and die forging jumping-up moulding process prevention forging hot procedure cracking, to reduce production cost and to improve lumber recovery, prepare qualified product.
According to an aspect of the present invention, provide a kind of male sportsman, the composition of described male sportsman is by weight percentage: 0%≤C≤0.1%, 16.5%≤Cr≤19.5%, 13.5%≤Co≤16.0%, 1.0%≤W≤2.0%, 2.5%≤Mo≤3.5%, 2.0%≤Al≤3.0%, 4.5%≤Ti≤5.5%, 0%≤Fe≤1.0%, 0.01%≤B≤0.03%, 0%≤Zr≤0.06%, 0%≤S≤0.002%, 0%≤Si≤0.15%, 0%≤Mn≤0.15%, surplus is Ni and other inevitable impurity.
The composition of described male sportsman is by weight percentage: C is 0.075%, Cr be 18.0%, Co be 15.0%, W be 1.5%, Mo be 3.0%, Al be 2.5%, Ti be 5%, B be 0.02%, Zr is 0.04%, and surplus is Ni and other inevitable impurity.
According to an aspect of the present invention, described in the preparation method providing a kind of male sportsman part, method comprises the steps: (a) melting, melting obtains the alloy of following composition: 0%≤C≤0.1%, 16.5%≤Cr≤19.5%, 13.5%≤Co≤16.0%, 1.0%≤W≤2.0%, 2.5%≤Mo≤3.5%, 2.0%≤Al≤3.0%, 4.5%≤Ti≤5.5%, 0%≤Fe≤1.0%, 0.01%≤B≤0.03%, 0%≤Zr≤0.06%, 0%≤S≤0.002%, 0%≤Si≤0.15%, 0%≤Mn≤0.15%, surplus is Ni and other inevitable impurity; B () is cast, adopt top teeming process casting; (c) remelting, melting voltage is 22V-30V, and melting electric current is 2000A-3000A, molten drop speed is that 3/s-6 drips/s, and adopts water-cooled and the type of cooling of filling helium gas cooling and combining, and is that 100Pa-200Pa explained hereafter goes out remelted ingot with helium pressure; D () hot-work is forged: after Heating Steel Ingots is come out of the stove, arrange isothermal holding technique before forging, described isothermal holding technique for sprinkle one deck glass powder in pure aluminium silicate insulating cotton, surface of steel ingot is bondd after one deck pure aluminium silicate insulating cotton carries out isothermal holding, adopt, without tensile stress arc anvil, draw out is carried out to steel ingot.
Melting step in described preparation method comprises charging by batches step, in the charging by batches step of described melting, except the C of 1/3 of easy scaling loss pantogen material C block weight and Al, Ti of 1/3 of starting material Al bar weight and micro alloying element B, Zr raw material, homogeneous the shove charge of other element raw material, unslaked lime is loaded with stove, after desulfurization removing nitric deoxygenation refining completes, add the C of 1/3 of easy scaling loss pantogen material C block weight and Al, Ti of 1/3 of starting material Al bar weight, tap and add B, Zr raw material in first 5 minutes.
Ingot shape in casting step process in described preparation method is
The ingot mould molten steel used in casting step process in described preparation method scalded, and top adds hot topping, and sprue gate and insulated feeder distance are less than 300mm, under keeping molten steel to become plume.
Reflow step in described preparation method obtains
remelted ingot.
Hot-work forging step in described preparation method comprises carrying out carrying out time repetition of many fire without the step of tensile stress arc anvil draw out after carrying out isothermal holding.
After described preparation method has also been included in hot-work forging, by steel ingot draw out extremely
2mm, Linear cut goes steel ingot end to end and segmentation, obtains
blank, with R=20mm car chamfering, after described isothermal holding technique, adopt swage collar pier thick, obtain
the blank of 2mm × 100 ± 2mm, is of a size of after preparing machining
the little diskware of male sportsman.
Accompanying drawing explanation
Fig. 1 is the vacuum induction melting graphic representation according to the embodiment of the present invention.
Embodiment
Below, embodiments of the invention are described in detail with reference to concrete example.
Exemplary embodiment of the present invention provides a kind of male sportsman.The composition of this male sportsman is by weight percentage: 0%≤C≤0.1%, 16.5%≤Cr≤19.5%, 13.5%≤Co≤16.0%, 1.0%≤W≤2.0%, 2.5%≤Mo≤3.5%, 2.0%≤Al≤3.0%, 4.5%≤Ti≤5.5%, 0%≤Fe≤1.0%, 0.01%≤B≤0.03%, 0%≤Zr≤0.06%, 0%≤S≤0.002%, 0%≤Si≤0.15%, 0%≤Mn≤0.15%, surplus is Ni and other inevitable impurity.
Preferably, the composition of male sportsman of the present invention is by weight percentage: C is 0.075%, Cr be 18.0%, Co is 15.0%, W is 1.5%, Mo be 3.0%, Al be 2.5%, Ti is 5%, B is 0.02%, Zr is 0.04%, and surplus is Ni and other inevitable impurity.
Male sportsman of the present invention is a kind of nickel base superalloy of difficulty distortion of high A1, Ti content, there is good tensile strength, high temperature resistant persistence and resistance to fatigue, particularly more than 900 DEG C, there is high strength, oxidation-resistance and structure stability, be mainly used to manufacture high thrust-weight ratio, high-efficiency engine turbine diskware, also can be used to manufacture overall gas turbine rotor, working temperature can reach 980 DEG C.Because the alloying level of male sportsman is high, especially itself A1 and Ti content summation can up to 7.5%, and the γ ' phase content of formation reaches about 45%, and this causes the easy component segregation of male sportsman and thermal processing distortion is difficult, easy to crack.
Present invention also offers a kind of preparation method of male sportsman part, this preparation method comprises melting, casting, remelting and hot-work forging.
First, melting obtains the alloy of following composition: 0%≤C≤0.1%, 16.5%≤Cr≤19.5%, 13.5%≤Co≤16.0%, 1.0%≤W≤2.0%, 2.5%≤Mo≤3.5%, 2.0%≤Al≤3.0%, 4.5%≤Ti≤5.5%, 0%≤Fe≤1.0%, 0.01%≤B≤0.03%, 0%≤Zr≤0.06%, 0%≤S≤0.002%, 0%≤Si≤0.15%, 0%≤Mn≤0.15%, surplus is Ni and other inevitable impurity.
Preferably, the electrode melting type of furnace adopted in fusion process can be 3000 pounds of vacuum induction furnaces, the selected high-quality high pure metal starting material when vacuum induction melting, and object is the harmful element content that minimizing starting material are brought into.
Preferably, to when filling with substance in smelting furnace, except the C of 1/3 of easy scaling loss pantogen material C block weight and the Al(of 1/3 of starting material Al bar weight is hereinafter referred to as 1/3C and 1/3Al), except Ti and micro alloying element (B, Zr etc.) raw material, homogeneous the shove charge of other element raw material, unslaked lime is loaded with stove, and press the principle charging of tight upper pine, prevent from building bridge in fusion process.Until suction reach≤1Pa time to electrification material, and adopt low power material.After starting material fusing completely, carry out great-power electromagnetic stirring, 1520 DEG C of-1540 DEG C of high temperature desulfurizings, extend soaking time, to reach the object of denitrogenation deoxidation.In the melting later stage, after desulfurization removing nitric deoxygenation refining completes, add easy scaling loss element 1/3C, 1/3Al, Ti, tap and add micro alloying element (B, Zr etc.) raw material in first 5 minutes, specifically see Fig. 1.
Specifically, as can be seen from the vacuum induction melting process curve shown in Fig. 1, add raw material in batches, and heat up to low power step type in fusion process.Specifically, temperature raises by the power in point some stages, often raises a temperature for some time, and such as, insulation 20min, this can make alloy raw material material well under low power, improves smelting quality when not increasing cost.
In the charging by batches step of described melting, except the raw materials such as easy scaling loss element 1/3C, 1/3Al, Ti and micro alloying element B, Zr, homogeneous the shove charge of other element raw material, unslaked lime is loaded with stove, temperature is increased to smelting temperature subsequently, treats that raw material carries out refining after all melting under the superpower of about 300KW.
Specifically, as shown in fig. 1, at 1520 DEG C-1540 DEG C, complete the refining of desulfurization removing nitric deoxidation.In the melting later stage, add easy scaling loss element 1/3C, extend soaking time, 60 minutes are incubated subsequently under the power condition of 150 ± 5KW, carrying out first time subsequently has a power failure conjunctiva, 60 minutes are incubated under the power condition of 150 ± 5KW, object is deoxidation, denitrogenation, and improve steel clarity at night, reach the object of refining, first time power failure conjunctiva is because the Al in subsequent smelting operation, it is the process of a fierce heat release that Ti adds, power failure conjunctiva object allows temperature lower, make Al, Ti adds fashionable, reduce its severity, prevent splash and temperature too high, follow-up smelting operation temperature is caused to control difficulty.After power failure conjunctiva the past period first time, continue to heat up, at 1520 DEG C-1540 DEG C, add 1/3Al, Ti element, be incubated 5 minutes, after being incubated under the power condition of the 150 ± 5KW of 20 minutes subsequently, carrying out second time subsequently and to have a power failure temperature adjustment.Under the power condition of the 150 ± 5KW of 20 minutes, insulation can slough the impurity element such as oxygen, nitrogen further, improve molten steel purity, second time power failure temperature adjustment is for the temperature of subsequent operations tapping is prepared, and then adjustment molten steel temperature is that follow-up charged tapping creates conditions.After this, applying argon gas, after treating that argon gas reaches 26665Pa, prepares tapping, within first 5 minutes, adds B, Zr raw material, charged tapping at the temperature of 1400 DEG C-1430 DEG C in tapping.
Preferably, the parameter adopted according to the casting process of the optimization of the embodiment of the present invention can be as follows: ingot shape is
top teeming process is poured into a mould; Ingot mould must scald with molten steel, and clean rustless, top adds hot topping; Casting charged tapping under vacuo, pouring gate and insulated feeder distance are less than 300mm, under keeping molten steel to become plume, control casting rate and filling quality; Casting rear mold cool time need be greater than 1h.
So far, exemplary embodiment according to the present invention by optimizing melting, that casting process parameter obtains low-sulfur low nitrogen hypoxemia high clarity is the second best in quality
electrode bar.
Electrode bar needs polishing, carries out vacuum arc remelting after can carrying out surperficial car light and the appropriate filled end of excision when being optionally necessary.According to the present invention, model can be adopted to be the vacuum arc remelting furnace of VAR660P7Ti.
The technique means that polishing and the method for car light can use those skilled in the art to commonly use, as long as can meet the demand of the quality to steel.
Preferably, in vacuum arc remelting process, control that melting voltage is 22V-30V, melting electric current is 2000A-3000A, molten drop speed is that 3/s-6 drips/s, and adopt water-cooled and fill the type of cooling that helium gas cooling combines and cool, wherein, helium pressure is 100Pa-200Pa, produces the second best in quality of the tiny and low component segregation of original structure crystal grain after remelting
vacuum arc remelting steel ingot.
Subsequently, steel ingot is of a size of after pulling out skin
left and right, carries out the thermal treatment of 1150 DEG C × 40h homogenizing and makes ingot composition even further, reduce microsegregation.
In ensuing hot-work forging process, 2000 tons of fast forging forging equipments can be adopted to forge after Heating Steel Ingots is come out of the stove before, pure aluminium silicate insulating cotton sprinkles the glass powder that one deck fusing point is about 1000 DEG C, surface of steel ingot one deck pure aluminium silicate insulating cotton that bonds is made to carry out isothermal holding, to slow down the radiating rate of steel ingot, make in the temperature range resting on applicable hot-work forging deformation of steel ingot energy long period, insulation increases every fire time deflection, and employing carries out draw out without tensile stress arc anvil (or V-type anvil) to steel ingot, prevention surface cracking.Many fire, draw out extremely to there is no tensile stress arc anvil (or V-type anvil) after repeating isothermal holding
left and right.Then Linear cut go steel ingot end to end with segmentation (
± 2mm), after car chamfering (R=20mm), isothermal holding (the same), adopt swage collar pier thick (
± 2mm × 100 ± 2mm), improve male sportsman thermoplasticity and prevention hot procedure cracking, prepare qualified product, size after machining
Pass through to carry out isothermal holding technique in forging hot procedure according to the preparation method of the embodiment of the present invention, adopt the cracking in arc anvil (or V-type anvil) draw out technique and die forging jumping-up moulding process prevention forging hot procedure, reduce production cost and improve lumber recovery, preparing qualified product.
Preparation method according to the embodiment of the present invention is improved male sportsman clarity by the processing parameter optimized in melting, casting process parameter and hot-work forging process, is improved ingot quality, thus improves male sportsman thermoplasticity.
Although specifically describe exemplary embodiment of the present invention with reference to embodiments of the invention, those skilled in the art will appreciate that without departing from the spirit and scope of the present invention, various forms of change can be made to embodiment.
Claims (9)
1. a male sportsman, it is characterized in that, the composition of described male sportsman is by weight percentage: 0%≤C≤0.1%, 16.5%≤Cr≤19.5%, 13.5%≤Co≤16.0%, 1.0%≤W≤2.0%, 2.5%≤Mo≤3.5%, 2.0%≤Al≤3.0%, 4.5%≤Ti≤5.5%, 0%≤Fe≤1.0%, 0.01%≤B≤0.03%, 0%≤Zr≤0.06%, 0%≤S≤0.002%, 0%≤Si≤0.15%, 0%≤Mn≤0.15%, surplus is Ni and other inevitable impurity
Wherein, the preparation method of described male sportsman comprises melting, casting, remelting and hot-work forging, in reflow process, melting voltage is 22V-30V, melting electric current is 2000A-3000A, molten drop speed is that 3/s-6 drips/s, and adopt water-cooled and fill the type of cooling that helium gas cooling combines and produce remelted alloy ingot, wherein, helium pressure is 100Pa-200Pa.
2. male sportsman as claimed in claim 1, it is characterized in that, the composition of described male sportsman is by weight percentage: C is 0.075%, Cr is 18.0%, Co is 15.0%, W is 1.5%, Mo be 3.0%, Al is 2.5%, Ti is 5%, B is 0.02%, Zr is 0.04%, and surplus is Ni and other inevitable impurity.
3. a preparation method for male sportsman part, is characterized in that, described method comprises the steps:
(a) melting, melting obtains the alloy of following composition: 0%≤C≤0.1%, 16.5%≤Cr≤19.5%, 13.5%≤Co≤16.0%, 1.0%≤W≤2.0%, 2.5%≤Mo≤3.5%, 2.0%≤Al≤3.0%, 4.5%≤Ti≤5.5%, 0%≤Fe≤1.0%, 0.01%≤B≤0.03%, 0%≤Zr≤0.06%, 0%≤S≤0.002%, 0%≤Si≤0.15%, 0%≤Mn≤0.15%, surplus is Ni and other inevitable impurity;
B () is cast, adopt top teeming process casting;
(c) remelting, melting voltage is 22V-30V, melting electric current is 2000A-3000A, molten drop speed is that 3/s-6 drips/s, and adopts water-cooled and the type of cooling of filling helium gas cooling and combining, and is that 100Pa-200Pa explained hereafter goes out remelted alloy ingot with helium pressure;
D () hot-work is forged: after alloy pig heating is come out of the stove, arrange isothermal holding technique before forging, described isothermal holding technique for sprinkle one deck glass powder in pure aluminium silicate insulating cotton, after making alloy pig surface adhesion one deck pure aluminium silicate insulating cotton carry out isothermal holding, adopt and carry out draw out without the involutory ingot of tensile stress arc anvil.
4. preparation method as claimed in claim 3, melting step in described preparation method comprises charging by batches step, in the charging by batches step of described melting, except the C of 1/3 of easy scaling loss pantogen material C block weight and Al, Ti of 1/3 of starting material Al bar weight and micro alloying element B, Zr raw material, homogeneous the shove charge of other element raw material, unslaked lime is loaded with stove, after desulfurization removing nitric deoxygenation refining completes, add the C of 1/3 of easy scaling loss pantogen material C block weight and Al, Ti of 1/3 of starting material Al bar weight, tap and add B, Zr raw material in first 5 minutes.
5. preparation method as claimed in claim 3, it is characterized in that, the ingot shape in the casting step process in described preparation method is
6. preparation method as claimed in claim 5, it is characterized in that, the ingot mould molten steel used in the casting step process in described preparation method scalded, and top adds hot topping, and sprue gate and insulated feeder distance are less than 300mm, under keeping molten steel to become plume.
7. preparation method as claimed in claim 3, it is characterized in that, the reflow step in described preparation method obtains
remelted alloy ingot.
8. preparation method as claimed in claim 3, is characterized in that, the hot-work forging step in described preparation method comprises carrying out carrying out time repetition of many fire without the step of tensile stress arc anvil draw out after carrying out isothermal holding.
9. preparation method as claimed in claim 3, is characterized in that, after described preparation method has also been included in hot-work forging, by alloy pig draw out extremely
linear cut goes alloy pig end to end and segmentation, obtains
blank, with R=20mm car chamfering, after described isothermal holding technique, adopt swage collar pier thick, obtain
blank, be of a size of after preparing machining
the little diskware of male sportsman.
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| CN106424501A (en) * | 2016-07-26 | 2017-02-22 | 厦门虹鹭钨钼工业有限公司 | Sheath-based difficult-to-deform material multidirectional swaging method |
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