CN110358895A - A kind of superhigh pressure turbine alloy ring forging and its manufacturing method - Google Patents

A kind of superhigh pressure turbine alloy ring forging and its manufacturing method Download PDF

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Publication number
CN110358895A
CN110358895A CN201910639396.7A CN201910639396A CN110358895A CN 110358895 A CN110358895 A CN 110358895A CN 201910639396 A CN201910639396 A CN 201910639396A CN 110358895 A CN110358895 A CN 110358895A
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forging
temperature
ring
heated
heating rate
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Inventor
承立新
周洪亮
张伟
孙峰
周敏
蒋费龙
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JIANGYIN HENGRUN RING FORGING CO Ltd
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JIANGYIN HENGRUN RING FORGING CO Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/76—Making machine elements elements not mentioned in one of the preceding groups
    • B21K1/761—Making machine elements elements not mentioned in one of the preceding groups rings
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C21D1/25—Hardening, combined with annealing between 300 degrees Celsius and 600 degrees Celsius, i.e. heat refining ("Vergüten")
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    • C21—METALLURGY OF IRON
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    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing
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    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing
    • C21D1/30—Stress-relieving
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    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
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    • C21—METALLURGY OF IRON
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    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/005—Heat treatment of ferrous alloys containing Mn
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/007—Heat treatment of ferrous alloys containing Co
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/008—Heat treatment of ferrous alloys containing Si
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/40—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rings; for bearing races
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
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    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
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    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
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    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
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    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
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    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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    • C22C38/52—Ferrous alloys, e.g. steel alloys containing chromium with nickel with cobalt
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    • C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
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    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/001—Austenite
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    • C21D2211/00—Microstructure comprising significant phases
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Abstract

The invention discloses a kind of superhigh pressure turbine alloy ring forgings and its manufacturing method, chemical analysis includes: carbon, nitrogen, manganese, chromium, nickel, silicon, copper, aluminium, tantalum, niobium, hafnium, cobalt, tungsten, molybdenum, titanium, tin, tellurium, lutetium, scandium and iron, and forging is 2Cr11MoVNbN forging.Manufacturing method includes the following steps: blanking, heating, forging, machining, Tempering and Quenching and stress relief annealing.Modulation treatment includes: that a, the laser beam issued with laser heat-treatment machine are scanned formula irradiation to the surface that type ring part is made is ground；B, 620~640 DEG C are heated to≤150 DEG C/h heating rate to the ring after laser scanning irradiation, temperature is kept to carry out primary tempering 16h, it is air-cooled；C, 620~640 DEG C are heated to≤150 DEG C/h heating rate again, temperature is kept to carry out double tempering 16h, it is air-cooled.The ring forging has high voltage performance good, is remarkably improved ring mechanical property, fabricates the features such as cost is relatively low, and processing technology is simple.

Description

A kind of superhigh pressure turbine alloy ring forging and its manufacturing method
Technical field
The present invention relates to steam turbine Special annular part manufacturing technology fields, and in particular to a kind of superhigh pressure turbine alloy Ring forging and its manufacturing method.
Background technique
In the prior art steam turbine with high pressure resistant forgings its ingredients be mainly C:0.18-0.24%, Si:0.10-0.50%, Mn:0.30-0.80%, P :≤0.025%, S :≤0.020%, Cr:11.00-12.5%, Mo:0.80-1.20%, Ni: 0.30-0.80%, V:0.25-0.35%, W≤0.60%, existing ingredient are unable to satisfy the mechanicalness of product in three directions Can, furthermore existing steam turbine high pressure resistant forgings, such steel grade material high pressure hardness height, malleability are poor.Forging range It is 1150-950 DEG C small, it forges and is easy cracking.And 2Cr11MoVNbN forging is mainly used in steam turbine, it is required that high, alloying element Height is easy to crack in forging and heat treatment process, and the lasting difficulty of high pressure reaches requirement.
Furthermore as demand of the society to Austriaization body stainless steel is growing day by day, people are even more to the body stainless steel of Austria containing Ni Preference；But the earth is limited for the nickel resources for manufacturing Austriaization body stainless steel, while nickel resources belong to strategic material, so currently Section nickel Austria body stainless steel is all being developed in countries in the world, to meet the needs of social development.
Summary of the invention
It is an object of the present invention to overcome defect existing in the prior art, it is good to provide a kind of high voltage performance, can be significant Improve ring mechanical property, processing and manufacturing cost is relatively low, processing technology simple superhigh pressure turbine alloy ring forging and its Manufacturing method.
To achieve the above object, the technical scheme is to design a kind of superhigh pressure turbine alloy ring forging, institutes Alloy ring forging is stated, by mass percentage, chemical analysis includes: carbon≤0.015%, nitrogen 0.1~0.3%, manganese 0.6~ 0.9%, chromium 10~15%, nickel 0.3~0.6%, silicon 0.2~0.6%, copper 0.1~0.2%, aluminium 0.4~0.6%, tantalum 0.8~ 2.3%, niobium 1.1~1.4%, hafnium 1.5~3.2%, cobalt 0.1~0.3%, tungsten 1~3%, molybdenum 0.7~1%, titanium 0.01~ 0.04%, tin≤0.04%, tellurium 0.3~0.6%, lutetium 0.002~0.003%, scandium 0.001~0.002%, surplus is for iron and not Removable impurity.
Preferred technical solution is that the forging is 2Cr11MoVNbN forging, and the forging's block dimension is Φ 1317mm × Φ 647mm×123mm。
Carbon content in steel alloy is arranged 0.015% hereinafter, to prevent intercrystalline corrosion the present invention；It adds simultaneously Nitrogen can be cooperateed with carbon with make up because carbon content reduce caused by stainless hardness of steel deficiency problem, nitrogen is also that austenite is formed Element plays an important role to the stability of austenite structure；The addition of nitrogen can also improve the corrosion resistance of steel alloy.
Chromium content in steel alloy is set slightly above 15% by the present invention, is improving the intensity of steel alloy, hardness and resistance to While mill property, high chrome contents is avoided to influence the plasticity and toughness of steel alloy.Nickel is as strong austenite former, with chromium to close Can make steel alloy at room temperature after the ratio mixing of reason has stable austenite structure.Nickel can also improve with chromium coordinated Resistance to stress corrosion resistance, high-temperature oxidation resistance and the intensity of steel alloy.
Silicon is added in steel alloy of the invention, silicon can make steel alloy have certain corrosion resistance to concentrated nitric acid.
Aluminium is added in steel alloy of the invention, aluminium is as a kind of ferrite former, under additive amount appropriate, energy Promote evolution reaction to occur and form nickel aluminium precipitated phase, strengthens steel alloy, further increase the intensity of steel alloy.
Molybdenum is added in steel alloy of the invention, molybdenum makes steel alloy be resistant to sulfuric acid, phosphoric acid, formic acid, acetic acid, urea etc. Corrosion.
Niobium is added in steel alloy of the invention, niobium can form niobium carbide with the preferential chemical combination of carbon, avoid because being formed Cr23C6And Cr depletion zone is caused, effectively improve the intergranular corrosion resistance ability of steel alloy.
The present invention is creatively added to tantalum, hafnium and tungsten also in steel alloy, and wherein tantalum has high corrosion resistance, nothing By will not be reacted with hydrochloric acid, concentrated nitric acid and chloroazotic acid under cold or heat condition；At 150 DEG C, tantalum will not be by The concentrated sulfuric acid and inorganic salts are corroded；At normal temperature, aqueous slkali, chlorine, bromine water, dilute sulfuric acid and other many medicaments will not be with Tantalum works.The addition of tantalum can not only effectively improve corrosion-resistant effect of the steel alloy to all kinds of corrosive substances, keep steel alloy rich There are high ductibility and toughness, avoids generating brittle crack；Tantalum can also form solid solution and carbide with carbon, with niobium coordinated into The intergranular corrosion resistance ability of one step raising steel alloy；Tantalum can also form solid solution and nitride with nitrogen, further increase improvement and close The corrosion resistance and intensity of Jin Gang.
The addition of hafnium can equally improve corrosion resistance, hardness, intensity and the high temperature resistance of steel alloy；Energy after tungsten is added Tungsten carbide is formed with carbon, tungsten carbide can further increase the hardness, wearability and high temperature resistance of steel alloy；And cobalt is not only Austenite former, moreover it is possible to the intensity for further increasing steel alloy is cooperateed with tungsten carbide.
Tantalum cooperates with the intensity and heat-resisting quantity that can be further improved steel alloy with hafnium, tantalum with tungsten or tantalum with tungsten and hafnium Energy.
Tellurium is added in steel alloy of the invention, tellurium has good heat transfer and electric conductivity, can not only improve alloy The machinability of steel, moreover it is possible to improve the hardness of steel alloy.
Rare earth element lutetium and scandium are added in steel alloy of the invention, Lutetium can improve the processing performance of steel, improve Intensity, toughness, corrosion resistance and inoxidizability etc..Metal scandium has good high temperature resistance, is remarkably improved steel alloy High-temperature-resistant high-pressure-resistant performance.
A kind of manufacturing method of superhigh pressure turbine alloy ring forging, the manufacturing method comprise the technical steps that:
(1), blanking, steel ingot is electroslag billet, having a size of 600 × 680mm of Φ；
(2), it heats, controls charging temperature less than 600 DEG C, and preheat 2 hours；It is heated to≤150 DEG C/h heating rate It 830~850 DEG C, is kept for temperature 3 hours；1150~1180 DEG C are heated to≤150 DEG C/h heating rate, is kept for temperature 5 hours； It is cooling；
(3), it forges, control temperature is at 1100 DEG C or less after blank is come out of the stove；
Upsetting pull base is pulled out using three upsettings two, to forge interior tissue, comprising:
S1, blank jumping-up to 420mm；
It pulls out after s2, blank chamfered edge are round as a ball to 600mm；
S3, blank are upset to 420mm；
It pulls out after s4, blank chamfered edge are round as a ball to 600mm；
S5, blank are upset to 200mm；
S6, round as a ball shaping punching；
It is transferred to ring rolls after the completion of base grind and type is made, then carry out forging rear annealing: being heated up speed with≤150 DEG C/h Degree is heated to 420~460 DEG C, keeps temperature 2h, is heated to 750~800 DEG C with≤150 DEG C/h heating rate, keeps temperature 8h, Furnace be as cold as 550 DEG C it is air-cooled；Conditioning treatment: partial annealing is heated to 890~940 DEG C with≤150 DEG C/h heating rate, protects Hold temperature 8h, furnace be as cold as 550 DEG C it is air-cooled；
(4), it machines, turnery processing, including rough turn and smart car is carried out to ring by size as defined in drawing；
(5), Tempering and Quenching
A, the surface that type ring part is made to stone roller in the laser beam issued with laser heat-treatment machine is scanned formula irradiation；
B, 850~1060 DEG C are heated to≤150 DEG C/h heating rate to the ring after laser scanning irradiation, keep temperature Primary tempering 16h is carried out, it is air-cooled；
C, 620~640 DEG C are heated to≤150 DEG C/h heating rate again, temperature is kept to carry out double tempering 16h, it is air-cooled；
(6), stress relief annealing: 580~620 DEG C are heated to≤150 DEG C/h heating rate, keeps temperature 8h, furnace is as cold as 450 DEG C air-cooled.
Preferred technical solution is, in the step (3), during upsetting pull base, once blank temperature is lower than 1050 DEG C, Heat preservation need to be melted down 1~2 hour.
Preferred technical solution in addition, in the step (5) a, sweep by the laser beam for being scanned formula irradiation to ring surface Retouching speed is 3~8mm/s, and positive out of focus amount is 15mm, overlapping rate 20-50%；1200 watts of the laser power of use；Laser makes workpiece Surface, which reaches, returns temperature in RRA.
Preferred technical solution in addition, carry out mechanical property to the ring after the step (6) stress relief annealing process again Test, test index include: yield strength, tensile strength, elongation percentage, proper shellfish ballistic work, impact.
Further preferred technical solution in addition, carry out ultrasonic examination again to by the forging after Mechanics Performance Testing, Ultrasonic examination is carried out by the regulation of EN10308 credit rating 3.
The advantages and beneficial effects of the present invention are:
(1) carbon content in steel alloy is arranged 0.015% hereinafter, to prevent intercrystalline corrosion the present invention；Simultaneously The nitrogen of addition can be cooperateed with carbon to make up the stainless hardness of steel deficiency problem because caused by reducing carbon content, and nitrogen is also austenite Formation element plays an important role to the stability of austenite structure；The addition of nitrogen can also improve the corrosion resistance of steel alloy；
(2) chromium content in steel alloy is set slightly above 18% by the present invention, improve steel alloy intensity, hardness and While wearability, high chrome contents is avoided to influence the plasticity and toughness of steel alloy；Nickel as strong austenite former, with chromium with Can make steel alloy at room temperature after reasonable ratio mixing has stable austenite structure；Nickel can also change with chromium coordinated Resistance to stress corrosion resistance, high-temperature oxidation resistance and the intensity of kind steel alloy；
(3) silicon is added in steel alloy of the invention, silicon can make steel alloy have certain corrosion resistance to concentrated nitric acid；
(4) aluminium is added in steel alloy of the invention, aluminium is as a kind of ferrite former, in additive amount appropriate Under, evolution reaction can be promoted to occur and form nickel aluminium precipitated phase, strengthen steel alloy, further increase the intensity of steel alloy；
(5) niobium is added in steel alloy of the invention, niobium can form niobium carbide with the preferential chemical combination of carbon, avoid because being formed Cr23C6And Cr depletion zone is caused, effectively improve the intergranular corrosion resistance ability of steel alloy；
(6) present invention is also creatively added to tantalum in steel alloy, and the addition of tantalum can not only effectively improve steel alloy pair The corrosion-resistant effect of all kinds of corrosive substances makes steel alloy rich in high ductibility and toughness, avoids generating brittle crack；Tantalum can also Solid solution and carbide are formed with carbon, the intergranular corrosion resistance ability of steel alloy is further increased with niobium coordinated；Tantalum can also be with Nitrogen forms solid solution and nitride, further increases the corrosion resistance and intensity for improving steel alloy；
(7) present invention is creatively added to hafnium, tungsten and cobalt also in steel alloy, and the addition of hafnium can improve the anti-of steel alloy Corrosive nature, hardness, intensity and high temperature resistance；Tungsten can form tungsten carbide with carbon after being added, and tungsten carbide can further increase Hardness, wearability and the high temperature resistance of steel alloy；And cobalt is not only austenite former, moreover it is possible to cooperateed with tungsten carbide into one Step improves the intensity of steel alloy；Moreover, tantalum is cooperateed with tungsten, tantalum with tungsten and hafnium with hafnium, tantalum can be further improved steel alloy Intensity and high temperature resistance.
(8) present invention is creatively added to rare earth element lutetium and scandium also in steel alloy, and Lutetium can improve steel Processing performance improves intensity, toughness, corrosion resistance and inoxidizability etc..Metal scandium has good high temperature resistance, can be significant Improve the high-temperature-resistant high-pressure-resistant performance of steel alloy.
(9) use forging method and heat treatment method in the present invention that blank can be made not easy to crack, high temperature resistant, resistance to height Press persistence long, product mechanical property meets requirement.Reduce previous superhigh pressure turbine alloy ring forging to special type A large amount of consumption of steel, reduce production cost, also product are enable to improve quality and grade.
Material mechanical performance testing result:
Specific embodiment
With reference to embodiment, the specific embodiment of the present invention is further described.Following embodiment is only used for more Add and clearly demonstrate technical solution of the present invention, and not intended to limit the protection scope of the present invention.
Embodiment 1
A kind of superhigh pressure turbine alloy ring forging, the alloy ring forging, by mass percentage, chemical analysis It include: carbon≤0.015%, nitrogen 0.1%, manganese 0.6%, chromium 10%, nickel 0.3%, silicon 0.2%, copper 0.1%, aluminium 0.4%, tantalum 0.8%, niobium 1.1%, hafnium 1.5%, cobalt 0.1%, tungsten 1%, molybdenum 0.7%, titanium 0.01%, tin≤0.04%, tellurium 0.3%, lutetium 0.002%, scandium 0.001%, surplus is iron and not removable impurity, and the forging is 2Cr11MoVNbN forging, the forging Having a size of Φ 1317mm × Φ 647mm × 123mm.
A kind of manufacturing method of superhigh pressure turbine alloy ring forging, the manufacturing method comprise the technical steps that:
(1), blanking, steel ingot is electroslag billet, having a size of 600 × 680mm of Φ；
(2), it heats, controls charging temperature less than 600 DEG C, and preheat 2 hours；It is heated to≤150 DEG C/h heating rate It 830 DEG C, is kept for temperature 3 hours；1150 DEG C are heated to≤150 DEG C/h heating rate, is kept for temperature 5 hours；It is cooling；
(3), it forges, control temperature is at 1100 DEG C or less after blank is come out of the stove；
Upsetting pull base is pulled out using three upsettings two, to forge interior tissue, comprising:
S1, blank jumping-up to 420mm；
It pulls out after s2, blank chamfered edge are round as a ball to 600mm；
S3, blank are upset to 420mm；
It pulls out after s4, blank chamfered edge are round as a ball to 600mm；
S5, blank are upset to 200mm；
S6, round as a ball shaping punching；
It is transferred to ring rolls after the completion of base grind and type is made, then carry out forging rear annealing: being heated up speed with≤150 DEG C/h Degree is heated to 420 DEG C, keeps temperature 2h, is heated to 750 DEG C with≤150 DEG C/h heating rate, keeps temperature 8h, furnace is as cold as 550 It is DEG C air-cooled；Conditioning treatment: partial annealing is heated to 890 DEG C with≤150 DEG C/h heating rate, keeps temperature 8h, and furnace is as cold as 550 DEG C air-cooled；
(4), it machines, turnery processing, including rough turn and smart car is carried out to ring by size as defined in drawing；
(5), Tempering and Quenching
A, the surface that type ring part is made to stone roller in the laser beam issued with laser heat-treatment machine is scanned formula irradiation, to ring The laser beam scanning speed that surface is scanned formula irradiation is 3mm/s, and positive out of focus amount is 15mm, overlapping rate 20%；What is used swashs 1200 watts of optical power；Laser reaches workpiece surface to return temperature in RRA；
B, 850 DEG C are heated to≤150 DEG C/h heating rate to the ring after laser scanning irradiation, temperature is kept to carry out one Secondary tempering 16h, it is air-cooled；
C, 620 DEG C are heated to≤150 DEG C/h heating rate again, temperature is kept to carry out double tempering 16h, it is air-cooled；
(6), stress relief annealing: 580 DEG C are heated to≤150 DEG C/h heating rate, keeps temperature 8h, furnace is as cold as 450 DEG C It is air-cooled.
Ring after stress relief annealing process carries out Mechanics Performance Testing again, and test index includes: that yield strength, tension are strong Degree, elongation percentage, proper shellfish ballistic work, impact.
Ultrasonic examination is carried out again to by the forging after Mechanics Performance Testing, and ultrasonic examination is by EN10308 mass etc. The regulation of grade 3 carries out.
Embodiment 2
A kind of superhigh pressure turbine alloy ring forging, the alloy ring forging, by mass percentage, chemical analysis It include: carbon≤0.015%, nitrogen 0.2%, manganese 0.75%, chromium 12.5%, nickel 0.45%, silicon 0.4%, copper 0.15%, aluminium 0.5%, Tantalum 1.5%, niobium 1.25%, hafnium 2.35%, cobalt 0.2%, tungsten 2%, molybdenum 0.85%, titanium 0.01~0.04%, tin≤0.04%, tellurium 0.3~0.6%, lutetium 0.002~0.003%, scandium 0.001~0.002%, surplus is iron and not removable impurity.
Preferred technical solution is that the forging is 2Cr11MoVNbN forging, and the forging's block dimension is Φ 1317mm × Φ 647mm×123mm。
A kind of manufacturing method of superhigh pressure turbine alloy ring forging, the manufacturing method comprise the technical steps that:
(1), blanking, steel ingot is electroslag billet, having a size of 600 × 680mm of Φ；
(2), it heats, controls charging temperature less than 600 DEG C, and preheat 2 hours；It is heated to≤150 DEG C/h heating rate It 840 DEG C, is kept for temperature 3 hours；1165 DEG C are heated to≤150 DEG C/h heating rate, is kept for temperature 5 hours；It is cooling；
(3), it forges, control temperature is at 1100 DEG C or less after blank is come out of the stove；
Upsetting pull base is pulled out using three upsettings two, to forge interior tissue, comprising:
S1, blank jumping-up to 420mm；
It pulls out after s2, blank chamfered edge are round as a ball to 600mm；
S3, blank are upset to 420mm；
It pulls out after s4, blank chamfered edge are round as a ball to 600mm；
S5, blank are upset to 200mm；
S6, round as a ball shaping punching；
It is transferred to ring rolls after the completion of base grind and type is made, then carry out forging rear annealing: being heated up speed with≤150 DEG C/h Degree is heated to 440 DEG C, keeps temperature 2h, is heated to 775 DEG C with≤150 DEG C/h heating rate, keeps temperature 8h, furnace is as cold as 550 It is DEG C air-cooled；Conditioning treatment: partial annealing is heated to 910 DEG C with≤150 DEG C/h heating rate, keeps temperature 8h, and furnace is as cold as 550 DEG C air-cooled；
(4), it machines, turnery processing, including rough turn and smart car is carried out to ring by size as defined in drawing；
(5), Tempering and Quenching
A, the surface that type ring part is made to stone roller in the laser beam issued with laser heat-treatment machine is scanned formula irradiation, to ring The laser beam scanning speed that surface is scanned formula irradiation is 3~8mm/s, and positive out of focus amount is 15mm, overlapping rate 20-50%；It adopts 1200 watts of laser power；Laser reaches workpiece surface to return temperature in RRA；
B, 950 DEG C are heated to≤150 DEG C/h heating rate to the ring after laser scanning irradiation, temperature is kept to carry out one Secondary tempering 16h, it is air-cooled；
C, 620~640 DEG C are heated to≤150 DEG C/h heating rate again, temperature is kept to carry out double tempering 16h, it is air-cooled；
(6), stress relief annealing: 580~620 DEG C are heated to≤150 DEG C/h heating rate, keeps temperature 8h, furnace is as cold as 450 DEG C air-cooled.
Ring after stress relief annealing process carries out Mechanics Performance Testing again, and test index includes: that yield strength, tension are strong Degree, elongation percentage, proper shellfish ballistic work, impact.
Ultrasonic examination is carried out again to by the forging after Mechanics Performance Testing, and ultrasonic examination is by EN10308 mass etc. The regulation of grade 3 carries out.
Embodiment 3
A kind of superhigh pressure turbine alloy ring forging, the alloy ring forging, by mass percentage, chemical analysis It include: carbon≤0.015%, nitrogen 0.1%, manganese 0.6%, chromium 10%, nickel 0.3%, silicon 0.2%, copper 0.1%, aluminium 0.4%, tantalum 0.8%, niobium 1.1%, hafnium 1.5%, cobalt 0.1%, tungsten 1%, molybdenum 0.7%, titanium 0.01%, tin≤0.04%, tellurium 0.3%, lutetium 0.002%, scandium 0.001%, surplus is iron and not removable impurity, and the forging is 2Cr11MoVNbN forging, the forging Having a size of Φ 1317mm × Φ 647mm × 123mm.
A kind of manufacturing method of superhigh pressure turbine alloy ring forging, the manufacturing method comprise the technical steps that:
(1), blanking, steel ingot is electroslag billet, having a size of 600 × 680mm of Φ；
(2), it heats, controls charging temperature less than 600 DEG C, and preheat 2 hours；It is heated to≤150 DEG C/h heating rate It 850 DEG C, is kept for temperature 3 hours；1180 DEG C are heated to≤150 DEG C/h heating rate, is kept for temperature 5 hours；It is cooling；
(3), it forges, control temperature is at 1100 DEG C or less after blank is come out of the stove；
Upsetting pull base is pulled out using three upsettings two, to forge interior tissue, comprising:
S1, blank jumping-up to 420mm；
It pulls out after s2, blank chamfered edge are round as a ball to 600mm；
S3, blank are upset to 420mm；
It pulls out after s4, blank chamfered edge are round as a ball to 600mm；
S5, blank are upset to 200mm；
S6, round as a ball shaping punching；
It is transferred to ring rolls after the completion of base grind and type is made, then carry out forging rear annealing: being heated up speed with≤150 DEG C/h Degree is heated to 460 DEG C, keeps temperature 2h, is heated to 800 DEG C with≤150 DEG C/h heating rate, keeps temperature 8h, furnace is as cold as 550 It is DEG C air-cooled；Conditioning treatment: partial annealing is heated to 940 DEG C with≤150 DEG C/h heating rate, keeps temperature 8h, and furnace is as cold as 550 DEG C air-cooled；
(4), it machines, turnery processing, including rough turn and smart car is carried out to ring by size as defined in drawing；
(5), Tempering and Quenching
A, the surface that type ring part is made to stone roller in the laser beam issued with laser heat-treatment machine is scanned formula irradiation, to ring The laser beam scanning speed that surface is scanned formula irradiation is 3~8mm/s, and positive out of focus amount is 15mm, overlapping rate 20-50%；It adopts 1200 watts of laser power；Laser reaches workpiece surface to return temperature in RRA；
B, 1060 DEG C are heated to≤150 DEG C/h heating rate to the ring after laser scanning irradiation, temperature is kept to carry out Primary tempering 16h, it is air-cooled；
C, 620~640 DEG C are heated to≤150 DEG C/h heating rate again, temperature is kept to carry out double tempering 16h, it is air-cooled；
(6), stress relief annealing: 580~620 DEG C are heated to≤150 DEG C/h heating rate, keeps temperature 8h, furnace is as cold as 450 DEG C air-cooled.
Ring after stress relief annealing process carries out Mechanics Performance Testing again, and test index includes: that yield strength, tension are strong Degree, elongation percentage, proper shellfish ballistic work, impact.
Ultrasonic examination is carried out again to by the forging after Mechanics Performance Testing, and ultrasonic examination is by EN10308 mass etc. The regulation of grade 3 carries out.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art For member, without departing from the technical principles of the invention, several improvements and modifications can also be made, these improvements and modifications Also it should be regarded as protection scope of the present invention.

Claims (7)

1. a kind of superhigh pressure turbine alloy ring forging, which is characterized in that the alloy ring forging, by mass percentage, Its chemical analysis includes: carbon≤0.015%, nitrogen 0.1~0.3%, manganese 0.6~0.9%, chromium 10~15%, nickel 0.3~0.6%, Silicon 0.2~0.6%, copper 0.1~0.2%, aluminium 0.4~0.6%, tantalum 0.8~2.3%, niobium 1.1~1.4%, hafnium 1.5~ 3.2%, cobalt 0.1~0.3%, tungsten 1~3%, molybdenum 0.7~1%, titanium 0.01~0.04%, tin≤0.04%, tellurium 0.3~ 0.6%, lutetium 0.002~0.003%, scandium 0.001~0.002%, surplus is iron and not removable impurity.
2. superhigh pressure turbine as described in claim 1 alloy ring forging, which is characterized in that the forging is 2Cr11MoVNbN forging, the forging's block dimension are Φ 1317mm × Φ 647mm × 123mm.
3. a kind of superhigh pressure turbine manufacturing method of alloy ring forging, which is characterized in that the manufacturing method includes as follows Processing step:
(1), blanking, steel ingot is electroslag billet, having a size of 600 × 680mm of Φ；
(2), it heats, controls charging temperature less than 600 DEG C, and preheat 2 hours；830 are heated to≤150 DEG C/h heating rate~ It 850 DEG C, is kept for temperature 3 hours；1150~1180 DEG C are heated to≤150 DEG C/h heating rate, is kept for temperature 5 hours；It is cooling；
(3), it forges, control temperature is at 1100 DEG C or less after blank is come out of the stove；
Upsetting pull base is pulled out using three upsettings two, to forge interior tissue, comprising:
S1, blank jumping-up to 420mm；
It pulls out after s2, blank chamfered edge are round as a ball to 600mm；
S3, blank are upset to 420mm；
It pulls out after s4, blank chamfered edge are round as a ball to 600mm；
S5, blank are upset to 200mm；
S6, round as a ball shaping punching；
It is transferred to ring rolls after the completion of base grind and type is made, then carries out forging rear annealing: being added with≤150 DEG C/h heating rate Heat keeps temperature 2h to 420~460 DEG C, is heated to 750~800 DEG C with≤150 DEG C/h heating rate, keeps temperature 8h, furnace is cold It is air-cooled to 550 DEG C；Conditioning treatment: partial annealing is heated to 890~940 DEG C with≤150 DEG C/h heating rate, keeps temperature Spend 8h, furnace be as cold as 550 DEG C it is air-cooled；
(4), it machines, turnery processing, including rough turn and smart car is carried out to ring by size as defined in drawing；
(5), Tempering and Quenching
A, the surface that type ring part is made to stone roller in the laser beam issued with laser heat-treatment machine is scanned formula irradiation；
B, 850~1060 DEG C are heated to≤150 DEG C/h heating rate to the ring after laser scanning irradiation, temperature is kept to carry out Primary tempering 16h, it is air-cooled；
C, 620~640 DEG C are heated to≤150 DEG C/h heating rate again, temperature is kept to carry out double tempering 16h, it is air-cooled；
(6), stress relief annealing: 580~620 DEG C are heated to≤150 DEG C/h heating rate, keeps temperature 8h, furnace is as cold as 450 DEG C It is air-cooled.
4. the superhigh pressure turbine as claimed in claim 3 manufacturing method of alloy ring forging, which is characterized in that the step (3) in, during upsetting pull base, once blank temperature is lower than 1050 DEG C, heat preservation need to be melted down 1~2 hour.
5. the superhigh pressure turbine as claimed in claim 3 manufacturing method of alloy ring forging, which is characterized in that the step It (5) is 3~8mm/s to the laser beam scanning speed that ring surface is scanned formula irradiation in a, positive out of focus amount is 15mm, overlap joint Rate 20-50%；1200 watts of the laser power of use；Laser reaches workpiece surface to return temperature in RRA.
6. the superhigh pressure turbine as claimed in claim 3 manufacturing method of alloy ring forging, which is characterized in that the step Suddenly the ring after (6) stress relief annealing process carries out Mechanics Performance Testing again, test index include: yield strength, tensile strength, Elongation percentage, proper shellfish ballistic work, impact.
7. the superhigh pressure turbine as claimed in claim 6 manufacturing method of alloy ring forging, which is characterized in that passing through power Forging after learning performance test carries out ultrasonic examination again, and ultrasonic examination is carried out by the regulation of EN10308 credit rating 3.
CN201910639396.7A 2019-07-16 2019-07-16 A kind of superhigh pressure turbine alloy ring forging and its manufacturing method Pending CN110358895A (en)

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CN110682065A (en) * 2019-11-06 2020-01-14 江阴市恒润重工股份有限公司 Method for processing high-temperature-resistant ring piece for steam turbine
CN110819782A (en) * 2019-11-06 2020-02-21 江阴市恒润环锻有限公司 Forging method of high-temperature-resistant ring piece for steam turbine
CN111167994A (en) * 2020-02-12 2020-05-19 山东宝鼎重工实业有限公司 Continuous forging production process for cylinder parts
CN111283384A (en) * 2020-02-21 2020-06-16 苏州市木冶机械锻造有限公司 Forging process of precision sealing element
CN116200684A (en) * 2023-03-14 2023-06-02 中航上大高温合金材料股份有限公司 Large-specification forging for steam turbine and forging method thereof
CN116713419A (en) * 2023-06-26 2023-09-08 重庆新承航锐科技股份有限公司 Thermal processing method and system for improving mechanical properties of 13Cr10Mo1W1VNbN gas turbine wheel disc forging
CN117553686A (en) * 2024-01-12 2024-02-13 成都航空职业技术学院 Laser radar point cloud-based carriage bulk cargo overrun detection method

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SE1650300A1 (en) * 2016-03-07 2017-09-08 Suzuki Garphyttan Ab Method of producing a cold drawn wire
CN106282836A (en) * 2016-08-31 2017-01-04 张家港中环海陆特锻股份有限公司 Steam turbine is by 2Cr11MoVNbN forging and manufacture method thereof

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110682065A (en) * 2019-11-06 2020-01-14 江阴市恒润重工股份有限公司 Method for processing high-temperature-resistant ring piece for steam turbine
CN110819782A (en) * 2019-11-06 2020-02-21 江阴市恒润环锻有限公司 Forging method of high-temperature-resistant ring piece for steam turbine
CN111167994A (en) * 2020-02-12 2020-05-19 山东宝鼎重工实业有限公司 Continuous forging production process for cylinder parts
CN111283384A (en) * 2020-02-21 2020-06-16 苏州市木冶机械锻造有限公司 Forging process of precision sealing element
CN116200684A (en) * 2023-03-14 2023-06-02 中航上大高温合金材料股份有限公司 Large-specification forging for steam turbine and forging method thereof
CN116713419A (en) * 2023-06-26 2023-09-08 重庆新承航锐科技股份有限公司 Thermal processing method and system for improving mechanical properties of 13Cr10Mo1W1VNbN gas turbine wheel disc forging
CN117553686A (en) * 2024-01-12 2024-02-13 成都航空职业技术学院 Laser radar point cloud-based carriage bulk cargo overrun detection method
CN117553686B (en) * 2024-01-12 2024-05-07 成都航空职业技术学院 Laser radar point cloud-based carriage bulk cargo overrun detection method

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