CN108034891A - A kind of corrosion resistant type valve forging method - Google Patents

A kind of corrosion resistant type valve forging method Download PDF

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Publication number
CN108034891A
CN108034891A CN201711370733.4A CN201711370733A CN108034891A CN 108034891 A CN108034891 A CN 108034891A CN 201711370733 A CN201711370733 A CN 201711370733A CN 108034891 A CN108034891 A CN 108034891A
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forging
mould
parts
powder
corrosion
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孔维方
张文敏
田辉
李国富
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Development Valve Plant Of Wenzhou City
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Development Valve Plant Of Wenzhou City
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Priority to CN201711370733.4A priority Critical patent/CN108034891A/en
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    • 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
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/14—Treatment of metallic powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/17—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by forging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24—After-treatment of workpieces or articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C16/00—Alloys based on zirconium
    • 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
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • 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
    • C22C38/18—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
    • 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
    • C22C38/18—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
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
    • 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
    • C22C38/18—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
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/52—Ferrous alloys, e.g. steel alloys containing chromium with nickel with cobalt
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24—After-treatment of workpieces or articles
    • B22F2003/241—Chemical after-treatment on the surface
    • B22F2003/242—Coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy

Abstract

The invention discloses a kind of corrosion resistant type valve forging method, includes the following steps to choose the steel ingot with following parts by weight：Carbon, silicon, nickel, chromium, manganese, copper, molybdenum, titanium, vanadium, cobalt, tantalum, iron, steel ingot is put into vaccum sensitive stove and is heated, metal liquid is atomized into powder by the metal of molten condition in argon gas atomising device with high pressure argon gas, after the powder obtained is screened impurity is removed through electrostatic separation, powder after removal impurity is loaded into mould, mould is heated, mould after heating is cooled down, and metal product after cooling is deviate from into mould, the metal product obtained is forged by forging machine, the forging forged is heat-treated, it will be cooled to the forging corrosion-resistant finishes after room temperature, it is final to obtain valve.The present invention can strengthen the corrosion resistance of valve, be conducive to improve the service life of valve.

Description

A kind of corrosion resistant type valve forging method
Technical field
The present invention relates to valve technical field of forging, more particularly to a kind of corrosion resistant type valve forging method.
Background technology
The manufacture of valve is divided into two kinds of casting and forging, and relative to the valve of casting, the valve of forging has dense structure Property is good, intensity is high, impact resistance, endurance the advantages that, but during traditional valve of valve, the selection of valve material is deposited In more impurity, and the corrosion resistant degree of corrosion on its surface of valve after forging is low, therefore causes valve in the process used In, its surface is easily corroded, and is unfavorable for the long-time service of valve.For this reason, we have proposed a kind of forging of corrosion resistant type valve Make method.
The content of the invention
The present invention proposes a kind of corrosion resistant type valve forging method, to solve the problems mentioned in the above background technology.
The present invention proposes a kind of corrosion resistant type valve forging method, includes the following steps：
S1：Choose the steel ingot with following parts by weight：0.05-0.15 parts of carbon, 0.08-0.14 parts of silicon, 1.4-2.2 parts of nickel, chromium 2.6-3.2 parts, 0.3-0.8 parts of manganese, 0.06-0.14 parts of copper, 0.5-0.9 parts of molybdenum, 0.6-1.2 parts of titanium, 0.8-1.6 parts of vanadium, cobalt 0.01-0.04 parts, 0.02-0.06 parts of tantalum, 80-90 parts of iron；
S2：Steel ingot selected by S1 is put into vaccum sensitive stove and is heated, and causes the state of steel ingot to be changed into molten condition Metal liquid；
S3：The metal liquid of molten condition in S2 is flowed into argon gas atomising device by stem bar, with height in argon gas atomising device Metal liquid is atomized into powder by pressure argon gas；
S4：After the powder screening that S3 is obtained impurity is removed through electrostatic separation；
S5：Powder after removal impurity in S4 is loaded into mould, and carries out application of vacuum, and vacuum is carried out to the powder in mould After processing, mould is sealed, and mould is heated, the temperature control of heating is at 1600-1800 DEG C, and continuous heating 50min；
S6：Mould after heating is cooled down, and metal product after cooling is deviate from into mould；
S7：The metal product obtained to S6 is forged by forging machine, and is forged into forging, and in the forging to being forged Outer surface carries out sanding and polishing processing；
S8：Forging after S7 polishing treatments is heat-treated, forging is heated to 900-1100 DEG C, and in 900-1100 DEG C of degree In the case of keep the temperature 4-6 it is small when, then by forging cooled to room temperature；
S9：Forging corrosion-resistant finishes after being cooled to room temperature in S8, finally obtains valve.
Preferably, the heating and temperature control of steel ingot at 1350 DEG C -1450 DEG C, and continues 60min-120min in S1, and To carrying out uniform stirring in the metal liquid of molten condition.
Preferably, the cooling of mould is stagewise cooling in S6, and the control of each level is at 150 DEG C -300 DEG C, each layer The duration of level is 10min, and causes mould to be finally reduced to room temperature.
Preferably, the diameier after being screened in S4 is controlled in 50um-100um, and the powder screening in S4 is in vacuum Under environment.
Preferably, corrosion-resistant finishes is specially zircaloy, changes the tin of zircaloy 0.5-2.0wt, the iron of 0.05-0.2wt, The chromium of 0.02-0.1wt, remaining is zirconium.
A kind of corrosion resistant type valve forging method proposed by the present invention, beneficial effect are：Pass through control valve in this programme The degree of purity of door raw material, and cause the even mixing between raw material between different metal material so that raw material are being forged into Its structural strength and anticorrosive intensity enhancing after valve, and its surface spraying corrosion-resistant finishes again after valve is forged into, because This valve when in use can be corrosion-resistant, enhances the service life of valve.
Embodiment
With reference to specific embodiment, the present invention will be further described.
Embodiment 1
The present invention proposes a kind of corrosion resistant type valve forging method, includes the following steps：
S1：Choose the steel ingot with following parts by weight：0.05 part of carbon, 0.08 part of silicon, 1.4 parts of nickel, 2.6 parts of chromium, 0.3 part of manganese, copper 0.06 part, 0.5 part of molybdenum, 0.6 part of titanium, 0.8 part of vanadium, 0.01 part of cobalt, 0.02 part of tantalum, 80 parts of iron；
S2：Steel ingot selected by S1 is put into vaccum sensitive stove and is heated, and causes the state of steel ingot to be changed into molten condition Metal liquid；
S3：The metal liquid of molten condition in S2 is flowed into argon gas atomising device by stem bar, with height in argon gas atomising device Metal liquid is atomized into powder by pressure argon gas；
S4：Impurity is removed through electrostatic separation after the powder screening that S3 is obtained, therefore ensure that the degree of purity between powder；
S5：Powder after removal impurity in S4 is loaded into mould, and carries out application of vacuum, and vacuum is carried out to the powder in mould After processing, mould is sealed, and mould is heated, the temperature control of heating is at 1600 DEG C, and continuous heating 50min, the chemical element avoided between powdered metal and air react；
S6：Mould after heating is cooled down, and metal product after cooling is deviate from into mould；
S7：The metal product obtained to S6 is forged by forging machine, and is forged into forging, and in the forging to being forged Outer surface carries out sanding and polishing processing；
S8：Forging after S7 polishing treatments is heat-treated, forging is heated to 900 DEG C, and protected in the case of being spent at 900 DEG C When temperature 4 is small, then by forging cooled to room temperature；
S9：Forging corrosion-resistant finishes after being cooled to room temperature in S8, finally obtains valve.
The heating and temperature control of steel ingot is at 1350 DEG C in S1, and continues 60min, and to the metal liquid in molten condition Carry out uniform stirring.
The cooling of mould cools down for stagewise in S6, and each level control is in 150 DEG C, the duration of each level 10min, and cause mould to be finally reduced to room temperature.
Diameier after being screened in S4 is controlled in 50um, and the powder screening in S4 is under vacuum environment.
Corrosion-resistant finishes is specially zircaloy, changes the tin of zircaloy 0.5wt, the iron of 0.05wt, the chromium of 0.02wt, remaining is Zirconium.
Embodiment 2
The present invention proposes a kind of corrosion resistant type valve forging method, includes the following steps：
S1：Choose the steel ingot with following parts by weight：0.08 part of carbon, 0.1 part of silicon, 1.7 parts of nickel, 2.8 parts of chromium, 0.45 part of manganese, copper 0.09 part, 0.65 part of molybdenum, 0.8 part of titanium, 1.1 parts of vanadium, 0.02 part of cobalt, 0.035 part of tantalum, 83 parts of iron；
S2：Steel ingot selected by S1 is put into vaccum sensitive stove and is heated, and causes the state of steel ingot to be changed into molten condition Metal liquid；
S3：The metal liquid of molten condition in S2 is flowed into argon gas atomising device by stem bar, with height in argon gas atomising device Metal liquid is atomized into powder by pressure argon gas；
S4：Impurity is removed through electrostatic separation after the powder screening that S3 is obtained, therefore ensure that the degree of purity between powder；
S5：Powder after removal impurity in S4 is loaded into mould, and carries out application of vacuum, and vacuum is carried out to the powder in mould After processing, mould is sealed, and mould is heated, the temperature control of heating is at 1670 DEG C, and continuous heating 50min, the chemical element avoided between powdered metal and air react；
S6：Mould after heating is cooled down, and metal product after cooling is deviate from into mould；
S7：The metal product obtained to S6 is forged by forging machine, and is forged into forging, and in the forging to being forged Outer surface carries out sanding and polishing processing；
S8：Forging after S7 polishing treatments is heat-treated, forging is heated to 970 DEG C, and protected in the case of being spent at 970 DEG C When temperature 4.7 is small, then by forging cooled to room temperature；
S9：Forging corrosion-resistant finishes after being cooled to room temperature in S8, finally obtains valve.
The heating and temperature control of steel ingot is at 1380 DEG C in S1, and continues 80min, and to the metal liquid in molten condition Carry out uniform stirring.
The cooling of mould cools down for stagewise in S6, and each level control is in 200 DEG C, the duration of each level 10min, and cause mould to be finally reduced to room temperature.
Diameier after being screened in S4 is controlled in 65um, and the powder screening in S4 is under vacuum environment.
Corrosion-resistant finishes is specially zircaloy, changes the tin of zircaloy 1.0wt, the iron of 0.1wt, the chromium of 0.05wt, remaining is Zirconium.
Embodiment 3
The present invention proposes a kind of corrosion resistant type valve forging method, includes the following steps：
S1：Choose the steel ingot with following parts by weight：0.11 part of carbon, 0.12 part of silicon, 2.0 parts of nickel, 3.0 parts of chromium, 0.6 part of manganese, copper 0.11 part, 0.8 part of molybdenum, 1.0 parts of titanium, 1.3 parts of vanadium, 0.03 part of cobalt, 0.045 part of tantalum, 86 parts of iron；
S2：Steel ingot selected by S1 is put into vaccum sensitive stove and is heated, and causes the state of steel ingot to be changed into molten condition Metal liquid；
S3：The metal liquid of molten condition in S2 is flowed into argon gas atomising device by stem bar, with height in argon gas atomising device Metal liquid is atomized into powder by pressure argon gas；
S4：Impurity is removed through electrostatic separation after the powder screening that S3 is obtained, therefore ensure that the degree of purity between powder；
S5：Powder after removal impurity in S4 is loaded into mould, and carries out application of vacuum, and vacuum is carried out to the powder in mould After processing, mould is sealed, and mould is heated, the temperature control of heating is at 1730 DEG C, and continuous heating 50min, the chemical element avoided between powdered metal and air react；
S6：Mould after heating is cooled down, and metal product after cooling is deviate from into mould；
S7：The metal product obtained to S6 is forged by forging machine, and is forged into forging, and in the forging to being forged Outer surface carries out sanding and polishing processing；
S8：Forging after S7 polishing treatments is heat-treated, forging is heated to 1030 DEG C, and in the case where 1030 DEG C are spent Keep the temperature 5.3 it is small when, then by forging cooled to room temperature；
S9：Forging corrosion-resistant finishes after being cooled to room temperature in S8, finally obtains valve.
The heating and temperature control of steel ingot is at 1400 DEG C in S1, and continues 100min, and to the molten metal in molten condition Body carries out uniform stirring.
The cooling of mould cools down for stagewise in S6, and each level control is in 250 DEG C, the duration of each level 10min, and cause mould to be finally reduced to room temperature.
Diameier after being screened in S4 is controlled in 85um, and the powder screening in S4 is under vacuum environment.
Corrosion-resistant finishes is specially zircaloy, changes the tin of zircaloy 1.5wt, the iron of 0.15wt, the chromium of 0.08wt, remaining is Zirconium.
Embodiment 4
S1：Choose the steel ingot with following parts by weight：0.15 part of carbon, 0.14 part of silicon, 2.2 parts of nickel, 3.2 parts of chromium, 0.8 part of manganese, copper 0.14 part, 0.9 part of molybdenum, 1.2 parts of titanium, 1.6 parts of vanadium, 0.04 part of cobalt, 0.06 part of tantalum, 90 parts of iron；
S2：Steel ingot selected by S1 is put into vaccum sensitive stove and is heated, and causes the state of steel ingot to be changed into molten condition Metal liquid；
S3：The metal liquid of molten condition in S2 is flowed into argon gas atomising device by stem bar, with height in argon gas atomising device Metal liquid is atomized into powder by pressure argon gas；
S4：Impurity is removed through electrostatic separation after the powder screening that S3 is obtained, therefore ensure that the degree of purity between powder；
S5：Powder after removal impurity in S4 is loaded into mould, and carries out application of vacuum, and vacuum is carried out to the powder in mould After processing, mould is sealed, and mould is heated, the temperature control of heating is at 1800 DEG C, and continuous heating 50min, the chemical element avoided between powdered metal and air react；
S6：Mould after heating is cooled down, and metal product after cooling is deviate from into mould；
S7：The metal product obtained to S6 is forged by forging machine, and is forged into forging, and in the forging to being forged Outer surface carries out sanding and polishing processing；
S8：Forging after S7 polishing treatments is heat-treated, forging is heated to 1100 DEG C, and in the case where 1100 DEG C are spent Keep the temperature 6 it is small when, then by forging cooled to room temperature；
S9：Forging corrosion-resistant finishes after being cooled to room temperature in S8, finally obtains valve.
The heating and temperature control of steel ingot is at 1450 DEG C in S1, and continues 120min, and to the molten metal in molten condition Body carries out uniform stirring.
The cooling of mould cools down for stagewise in S6, and each level control is in 300 DEG C, the duration of each level 10min, and cause mould to be finally reduced to room temperature.
Diameier after being screened in S4 is controlled in 100um, and the powder screening in S4 is under vacuum environment.
Corrosion-resistant finishes is specially zircaloy, changes the tin of zircaloy 2.0wt, the iron of 0.2wt, the chromium of 0.1wt, remaining is Zirconium.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto, Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.

Claims (5)

1. a kind of corrosion resistant type valve forging method, it is characterised in that comprise the following steps：
S1 chooses the steel ingot with following parts by weight：0.05-0.15 parts of carbon, 0.08-0.14 parts of silicon, 1.4-2.2 parts of nickel, chromium 2.6- 3.2 parts, 0.3-0.8 parts of manganese, 0.06-0.14 parts of copper, 0.5-0.9 parts of molybdenum, 0.6-1.2 parts of titanium, 0.8-1.6 parts of vanadium, cobalt 0.01- 0.04 part, 0.02-0.06 parts of tantalum, 80-90 parts of iron；
S2：Steel ingot selected by S1 is put into vaccum sensitive stove and is heated, and causes the state of steel ingot to be changed into molten condition Metal liquid；
S3：The metal liquid of molten condition in S2 is flowed into argon gas atomising device by stem bar, with height in argon gas atomising device Metal liquid is atomized into powder by pressure argon gas；
S4：After the powder screening that S3 is obtained impurity is removed through electrostatic separation；
S5：Powder after removal impurity in S4 is loaded into mould, and carries out application of vacuum, and vacuum is carried out to the powder in mould After processing, mould is sealed, and mould is heated, the temperature control of heating is at 1600-1800 DEG C, and continuous heating 50min；
S6：Mould after heating is cooled down, and metal product after cooling is deviate from into mould；
S7：The metal product obtained to S6 is forged by forging machine, and is forged into forging, and in the forging to being forged Outer surface carries out sanding and polishing processing；
S8：Forging after S7 polishing treatments is heat-treated, forging is heated to 900-1100 DEG C, and in 900-1100 DEG C of degree In the case of keep the temperature 4-6 it is small when, then by forging cooled to room temperature；
S9：Forging corrosion-resistant finishes after being cooled to room temperature in S8, finally obtains valve.
A kind of 2. corrosion resistant type valve forging method according to claim 1, it is characterised in that：The heating of steel ingot in S1 Temperature control continues 60min-120min at 1350 DEG C -1450 DEG C, and the metal liquid in molten condition is uniformly stirred Mix.
A kind of 3. corrosion resistant type valve forging method according to claim 1, it is characterised in that：The cooling of mould in S6 Cool down for stagewise, at 150 DEG C -300 DEG C, the duration of each level is 10min, and causes mould most for each level control Final decline as low as room temperature.
A kind of 4. corrosion resistant type valve forging method according to claim 1, it is characterised in that：Powder after being screened in S4 Diameter control is in 50um-100um, and the powder screening in S4 is under vacuum environment.
A kind of 5. corrosion resistant type valve forging method according to claim 1, it is characterised in that：Corrosion-resistant finishes is specially Zircaloy, changes the tin of zircaloy 0.5-2.0wt, the iron of 0.05-0.2wt, the chromium of 0.02-0.1wt, remaining is zirconium.
CN201711370733.4A 2017-12-19 2017-12-19 A kind of corrosion resistant type valve forging method Pending CN108034891A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1384220A (en) * 2001-05-07 2002-12-11 韩国原子力研究所 Zirconium alloy with excellent anticorrosive performance and mechanical performance and production process of coated nuclear fuel pipe of the alloy
CN1824817A (en) * 2006-01-25 2006-08-30 周向儒 Chromium steel series cold extruding die steel and heat treatment technique thereof
JP2008240046A (en) * 2007-03-27 2008-10-09 Nippon Steel Corp High-strength steel sheet having excellent scale adhesion upon hot pressing, and method for producing the same
CN102560275A (en) * 2010-12-28 2012-07-11 株式会社东芝 Heat resistant cast steel, manufacturing method thereof, cast parts of steam turbine, and manufacturing method of cast parts of steam turbine
CN102699263A (en) * 2012-06-26 2012-10-03 江苏金源锻造股份有限公司 Method for forging nuclear island main pipe
CN104264061A (en) * 2014-07-24 2015-01-07 浙江昌利锻造有限公司 Automobile engine forged piece and forging method thereof
CN104342603A (en) * 2014-10-21 2015-02-11 大丰市南亚阀门有限公司 Alloy material for improving corrosion resistance of valve and treatment process thereof
CN104561662A (en) * 2014-11-17 2015-04-29 江苏环亚电热仪表有限公司 Powder alloy and production technique thereof
CN205416155U (en) * 2015-12-04 2016-08-03 重庆市渝西钢铁（集团）有限公司 Casting die possesses quick cooling device
CN205732923U (en) * 2016-06-09 2016-11-30 四川理工学院 A kind of ferrous metal forming machine

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1384220A (en) * 2001-05-07 2002-12-11 韩国原子力研究所 Zirconium alloy with excellent anticorrosive performance and mechanical performance and production process of coated nuclear fuel pipe of the alloy
CN1824817A (en) * 2006-01-25 2006-08-30 周向儒 Chromium steel series cold extruding die steel and heat treatment technique thereof
JP2008240046A (en) * 2007-03-27 2008-10-09 Nippon Steel Corp High-strength steel sheet having excellent scale adhesion upon hot pressing, and method for producing the same
CN102560275A (en) * 2010-12-28 2012-07-11 株式会社东芝 Heat resistant cast steel, manufacturing method thereof, cast parts of steam turbine, and manufacturing method of cast parts of steam turbine
CN102699263A (en) * 2012-06-26 2012-10-03 江苏金源锻造股份有限公司 Method for forging nuclear island main pipe
CN104264061A (en) * 2014-07-24 2015-01-07 浙江昌利锻造有限公司 Automobile engine forged piece and forging method thereof
CN104342603A (en) * 2014-10-21 2015-02-11 大丰市南亚阀门有限公司 Alloy material for improving corrosion resistance of valve and treatment process thereof
CN104561662A (en) * 2014-11-17 2015-04-29 江苏环亚电热仪表有限公司 Powder alloy and production technique thereof
CN205416155U (en) * 2015-12-04 2016-08-03 重庆市渝西钢铁（集团）有限公司 Casting die possesses quick cooling device
CN205732923U (en) * 2016-06-09 2016-11-30 四川理工学院 A kind of ferrous metal forming machine

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Application publication date: 20180515