CN105964693B - The planetary rolling production technology of nickel base superalloy pipe - Google Patents
The planetary rolling production technology of nickel base superalloy pipe Download PDFInfo
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- CN105964693B CN105964693B CN201610017233.1A CN201610017233A CN105964693B CN 105964693 B CN105964693 B CN 105964693B CN 201610017233 A CN201610017233 A CN 201610017233A CN 105964693 B CN105964693 B CN 105964693B
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- planetary rolling
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- rolling
- motor
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- 238000005096 rolling process Methods 0.000 title claims abstract description 48
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 229910000601 superalloy Inorganic materials 0.000 title claims abstract description 16
- 238000005516 engineering process Methods 0.000 title claims abstract description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 11
- 239000013078 crystal Substances 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 238000005266 casting Methods 0.000 claims description 10
- 238000003801 milling Methods 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 10
- 229910045601 alloy Inorganic materials 0.000 claims description 9
- 239000000956 alloy Substances 0.000 claims description 9
- 238000005260 corrosion Methods 0.000 claims description 8
- 230000007797 corrosion Effects 0.000 claims description 8
- 238000005452 bending Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 5
- 239000007789 gas Substances 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 5
- 239000010687 lubricating oil Substances 0.000 claims description 5
- 239000011505 plaster Substances 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims 1
- 238000011084 recovery Methods 0.000 abstract description 6
- 238000005098 hot rolling Methods 0.000 abstract description 3
- 230000005611 electricity Effects 0.000 description 4
- 229910052748 manganese Inorganic materials 0.000 description 3
- 229910000792 Monel Inorganic materials 0.000 description 2
- 238000005097 cold rolling Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000000137 annealing Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
- B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
- B21B19/06—Rolling hollow basic material, e.g. Assel mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/46—Roll speed or drive motor control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/48—Tension control; Compression control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/78—Control of tube rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B9/00—Measures for carrying out rolling operations under special conditions, e.g. in vacuum or inert atmosphere to prevent oxidation of work; Special measures for removing fumes from rolling mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
- B21B13/18—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories for step-by-step or planetary rolling; pendulum mills
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The present invention relates to a kind of planetary rolling production technology of nickel base superalloy pipe, first check for tool and mould roll and mandrel surface quality on planetary rolling, it is 8.6~8.9 ° to adjust dog drift angle, the accessory system and main motor, stand-by motor for being then turned on planetary rolling are preheated, and nitrogen is filled with into planetary rolling, send base pipe to enter in sensing heater by 0.4~0.8m/min speed to preheat, heating-up temperature is 300~600 DEG C, is finally rolled in planetary rolling.The simple production process of the present invention, pipe is gone out using planetary rolling continuously hot rolling to nickel base superalloy pipe hollow ingot horizontally and continuously cast, its lumber recovery is high, efficiency high, adjust dog drift angle and suitable base pipe feed rate and heating-up temperature are selected in the preheating steps of base pipe, can reduce and roll power 20~40%, be advantageous to base pipe it is stable by roll and plug, the power of main motor is improved in the course of hot rolling of base pipe, the pipe rolled out has a tiny equi-axed crystal, and drawability is preferable.
Description
Technical field
The present invention relates to a kind of planetary rolling production technology of nickel base superalloy pipe, belong to nickel-based alloy pipe technology of preparing
Field.
Background technology
Nickel base superalloy is because with performances such as high-temp and high-strength, excellent corrosion resistances, being widely used in chemical industry, oil, sea
The key areas such as the industrial in ocean.
The traditional production technology of nickel base superalloy pipe is at present：Vacuum casting-- perforate-extrude -- reconditioning that strips off the skin-repeatedly
Cold rolling, heat treatment-finish rolling to finished product-arrangement-flaw detection, pressure test-annealing detection storage, the production technology is Ф to external diameter
The production technology of more than 30mm nickel base superalloy pipe is more ripe, but the pipe production for below Ф 30mm then rolls（Draw
Pull out）Road number is more, is heat-treated often, in the following specification of rolling external diameter Ф 20mm, especially Ф 12mm because of the tiny appearance of plug core bar
Easily break, and rolling yield is very low, need sawing to take the lead head because the factors such as length of pulling a cart, speed limit if using cold-drawn
And lumber recovery is low, while need the drawing of multi-pass and efficiency is low, cost is high.And " disk of monel metal pipe draws life to patent
The method that production. art -201410059315.3 " is then drawn using big extruder extrusion forming and disk, for below Ф 20mm
Monel metal pipe has significantly improved lumber recovery and production efficiency, but the input cost of big extruder is high, only extruding perforation
The lumber recovery of process is 60~80% or so.
The content of the invention
It is smaller in rolling external diameter the invention aims to solve the nickel base superalloy pipe of traditional processing technology preparation
Easily broken during specification because plug core bar is tiny, and the problem of rolling yield is very low, there is provided a kind of simple nickel of preparation method
The planetary rolling production technology of based high-temperature alloy pipe, the nickel base superalloy pipe lumber recovery prepared is high, efficiency high.
The present invention adopts the following technical scheme that：A kind of planetary rolling production technology of nickel base superalloy pipe, including it is as follows
Step：
（1）Check that the die rolls on planetary rolling ensure that installation is correct, fastens with mandrel surface quality, adjustment dog is inclined
Angle is 8.6~8.9 °；
（2）The accessory system Lubricating-oil Station for opening planetary rolling is lubricated to geared parts, is opened hydraulic power unit and is prepared fortune
Row hydraulic system；
（3）Start main motor, first main frame deep bid is rotated at a slow speed, restart auxiliary motor and progressively rise to 800~1000r/
Min, then arrives 1000r/min by main motor speed-raising, and empty machine operates 8min；
（4）15min is filled with nitrogen work into planetary rolling cover, in sensing heater, directed cavity before planet mill milling
To protect gas, nitrogen flow is 100~200L/min, nitrogen gas purity more than 99.99%；
（5）Using horizontal casting nickel-base high-temperature corrosion resistant alloy hollow cast ingot as base pipe, the plug to match with base pipe is selected, is opened
Open sensing heater and base pipe is sent into motor, by 0.4~0.8m/min speed base pipe will be sent to enter pre-add in sensing heater
Heat, the temperature of sensing heater is 300~600 DEG C, and voltage is 160~190V；
（6）Rolled after being bitten after directed cavity that base pipe after preheating is grown by 0.8m by planetary rolling mill roller, by
Successive step is sent into motor thrust, adjusts thrust according to auxiliary motor size of current, auxiliary motor current control is 400~500A, main electricity
The power of machine is 1400~1600KW；
（7）The lengthening coefficient of the pipe shut out is 8~16, very big deformation energy is produced in rolling, the temperature of pipe is 720
~920 DEG C, the pipe that chilling makes to shut out of then spraying water has tiny equi-axed crystal, and good drawability and excellent wall thickness are public
Difference；
（8）Pipe is curled into coil pipe base on coiling system and is used for following process.
Further, the step（5）Middle horizontal casting nickel-base high-temperature corrosion resistant alloy hollow cast ingot passes through milling face, the milling
Remove 0.3~1mm of surface thickness in face.
Further, the step（7）Water temperature is less than 35 DEG C, 1.5~4kg of pressure during middle water spray chilling, spray flow
50~100m3/h.
Further, the step（8）In the one end of pipe is introduced into prebending machine before pipe curling, pipe is surrounded
Prebending machine one is tightened after enclosing with adhesive plaster, is then adjusted pre- bending machine to suitable pre-bending position and is crimped.
Further, the step（6）Middle mair motor speed is 1400~2000r/min, deep bid rotating speed is 500~
580rpm。
The simple production process of the present invention, planetary rolling Continuous Heat is used to nickel base superalloy pipe hollow ingot horizontally and continuously cast
Pipe is shut out to draw for subsequent handling cold rolling i.e. disk, be cold drawn, its lumber recovery is high, efficiency high, and adjustment dog drift angle is 8.6~8.9 °,
So that can increase snap-in force and feeding force of the roll to base pipe in the operation of rolling, power is rolled in mitigation, in the preheating steps of base pipe
Middle selection suitable base pipe feed rate and heating-up temperature, can reduce and roll power 20~40%, be advantageous to base pipe it is stable by rolling
Roller and plug, the power of main motor, the tubing shut out by adjusting auxiliary motor rotating speed to make are improved in the course of hot rolling of base pipe
Do not rotate, when passing through milling train in the presence of aximal deformation value and deformation speed, the pipe rolled out has tiny equiax crystal
Grain, good drawability and excellent wall thickness tolerance.
Embodiment
Below in conjunction with specific embodiment, the present invention is further illustrated.
Embodiment one：
The nickel base superalloy trade mark is NCu30, and the mass percent of wherein main component is：Ni >=63%, Cu:28-34%,
The horizontal casting hollow ingot pipe specification of Fe≤2.5%, Mn≤2%. is Φ 85*20.
Planetary rolling production craft step is as follows：
（1）Check that the die rolls on planetary rolling ensure that installation is correct, fastens with mandrel surface quality, adjustment dog is inclined
Angle is 8.7 °；
（2）The accessory system Lubricating-oil Station for opening planetary rolling is lubricated to geared parts, is opened hydraulic power unit and is prepared fortune
Row hydraulic system；
（3）Start main motor, first main frame deep bid is rotated at a slow speed, restart auxiliary motor and progressively rise to 900r/min, so
1000r/min is arrived into main motor speed-raising afterwards, empty machine operates 8min；
（4）15min is filled with nitrogen work into planetary rolling cover, in sensing heater, directed cavity before planet mill milling
To protect gas, nitrogen flow is 100~200L/min, nitrogen gas purity more than 99.99%；
（5）Using horizontal casting nickel-base high-temperature corrosion resistant alloy hollow cast ingot as base pipe, the plug to match with base pipe is selected, is opened
Open sensing heater and base pipe is sent into motor, preheat sending base pipe to enter in sensing heater by 0.5m/min speed, feel
The temperature for answering heater is 520 DEG C, voltage 160V；
（6）Rolled after being bitten after directed cavity that base pipe after preheating is grown by 0.8m by planetary rolling mill roller, by
Successive step is sent into motor thrust, adjusts thrust according to auxiliary motor size of current, auxiliary motor current control is 400~500A, main electricity
The power of machine is 1500KW；
（7）The pipe specification shut out is Φ 48*2.6, and lengthening coefficient reaches 11, and very big deformation energy is produced in rolling, pipe
The temperature of son is 870 DEG C, and the chilling pipe that makes to shut out of then spraying water has a tiny equi-axed crystal, good drawability and excellent
Wall thickness tolerance, spray water chilling when water temperature be less than 35 DEG C, more than pressure 2kg, 50~100m of spray flow3/h；
（8）Help tube head to introduce prebending machine, tightened, blocked to prevent tube head, by cambering roll with the easy-to-draw adhesive plaster that obtains after a circle
It is transferred to suitable pre-bending position；Pipe is coiled into diameter 3200mm disk in case following process on coiling system.
Embodiment two：
The nickel base superalloy trade mark is NCu28-1-1 planetary rolling, and the mass percent of wherein main component is：Ni is
Surplus, Cu:28-32%, Fe：1-1.4%,Mn：1-1.4%. horizontal casting hollow ingot pipes specification is Φ 90*23, and step is as follows：
（1）Check that the die rolls on planetary rolling ensure that installation is correct, fastens with mandrel surface quality, adjustment dog is inclined
Angle is 8.6 °；
（2）The accessory system Lubricating-oil Station for opening planetary rolling is lubricated to geared parts, is opened hydraulic power unit and is prepared fortune
Row hydraulic system；
（3）Start main motor, first main frame deep bid is rotated at a slow speed, restart auxiliary motor and progressively rise to 800r/min, so
1000r/min is arrived into main motor speed-raising afterwards, empty machine operates 8min；
（4）15min is filled with nitrogen work into planetary rolling cover, in sensing heater, directed cavity before planet mill milling
To protect gas, nitrogen flow is 100~200L/min, nitrogen gas purity more than 99.99%；
（5）Using horizontal casting nickel-base high-temperature corrosion resistant alloy hollow cast ingot as base pipe, the plug to match with base pipe is selected, is opened
Open sensing heater and base pipe is sent into motor, preheat sending base pipe to enter in sensing heater by 0.5m/min speed, feel
The temperature for answering heater is 530 DEG C, voltage 175V；
（6）Rolled after being bitten after directed cavity that base pipe after preheating is grown by 0.8m by planetary rolling mill roller, by
Successive step is sent into motor thrust, adjusts thrust according to auxiliary motor size of current, auxiliary motor current control is 400~500A, main electricity
The power of machine is 1500KW；
（7）The pipe specification shut out is Φ 48*2.8, and lengthening coefficient reaches 12, and very big deformation energy is produced in rolling, pipe
The temperature of son is 890 DEG C, and the chilling pipe that makes to shut out of then spraying water has a tiny equi-axed crystal, good drawability and excellent
Wall thickness tolerance, spray water chilling when water temperature be less than 35 DEG C, more than pressure 2kg, 50~100m of spray flow3/h；
（8）Help tube head to introduce prebending machine, tightened, blocked to prevent tube head, by cambering roll with the easy-to-draw adhesive plaster that obtains after a circle
It is transferred to suitable pre-bending position；Pipe is coiled into diameter 3200mm disk in case following process on coiling system.
Embodiment three：
The nickel base superalloy trade mark is NCu28-2.5-1.5 planetary rolling, and the mass percent of wherein main component is：
Ni is surplus, Cu:27-29%, Fe：2-3%,Mn：1.2-1.8%. horizontal casting hollow ingot pipes specification is Φ 90*23, and step is such as
Under：
（1）Check that the die rolls on planetary rolling ensure that installation is correct, fastens with mandrel surface quality, adjustment dog is inclined
Angle is 8.9 °；
（2）The accessory system Lubricating-oil Station for opening planetary rolling is lubricated to geared parts, is opened hydraulic power unit and is prepared fortune
Row hydraulic system；
（3）Start main motor, first main frame deep bid is rotated at a slow speed, restart auxiliary motor and progressively rise to 900r/min, so
1000r/min is arrived into main motor speed-raising afterwards, empty machine operates 8min；
（4）15min is filled with nitrogen work into planetary rolling cover, in sensing heater, directed cavity before planet mill milling
To protect gas, nitrogen flow is 100~200L/min, nitrogen gas purity more than 99.99%；
（5）Using horizontal casting nickel-base high-temperature corrosion resistant alloy hollow cast ingot as base pipe, the plug to match with base pipe is selected, is opened
Open sensing heater and base pipe is sent into motor, preheat sending base pipe to enter in sensing heater by 0.5m/min speed, feel
The temperature for answering heater is 560 DEG C, voltage 190V；
（6）Rolled after being bitten after directed cavity that base pipe after preheating is grown by 0.8m by planetary rolling mill roller, by
Successive step is sent into motor thrust, adjusts thrust according to auxiliary motor size of current, auxiliary motor current control is 400~500A, main electricity
The power of machine is 1500KW；
（7）The pipe specification shut out is Φ 48*3, and lengthening coefficient reaches 12, very big deformation energy, pipe are produced in rolling
Temperature be 900 DEG C, the chilling pipe that makes to shut out of then spraying water has a tiny equi-axed crystal, good drawability and excellent
Wall thickness tolerance, spray water chilling when water temperature be less than 35 DEG C, more than pressure 2kg, 50~100m of spray flow3/h；
（8）Help tube head to introduce prebending machine, tightened, blocked to prevent tube head, by cambering roll with the easy-to-draw adhesive plaster that obtains after a circle
It is transferred to suitable pre-bending position；Pipe is coiled into diameter 3200mm disk in case following process on coiling system.
Claims (1)
- A kind of 1. planetary rolling production technology of nickel base superalloy pipe, it is characterised in that：Comprise the following steps：（1）Check that planetary rolling mold roll and mandrel surface quality ensure that installation is correct, fastens, adjustment dog drift angle is 8.6~8.9 °；（2）The accessory system Lubricating-oil Station for opening planetary rolling is lubricated to geared parts, is opened hydraulic power unit and is prepared operation liquid Pressure system；（3）Start main motor, first main frame deep bid is rotated at a slow speed, restart auxiliary motor and progressively rise to 800~1000r/min, Then main motor is raised speed and operates 8~10min to 800~1000r/min, empty machine；（4）10~15min is filled with nitrogen work into planetary rolling cover, in sensing heater, directed cavity before planet mill milling To protect gas, nitrogen flow is 100~200L/min, nitrogen gas purity more than 99.99%；（5）Using horizontal casting nickel-base high-temperature corrosion resistant alloy hollow cast ingot as base pipe, the plug to match with base pipe is selected, opens sense Answer heater and base pipe to be sent into motor, preheat sending base pipe to enter in sensing heater by 0.4~0.8m/min speed, feel The temperature for answering heater is 300~600 DEG C, and voltage is 160~190V, and horizontal casting nickel-base high-temperature corrosion resistant alloy hollow cast ingot passes through 0.3~1mm of surface thickness is removed in the milling face of mistake, the milling face；（6）Rolled after being bitten after directed cavity that base pipe after preheating is grown by 0.8m by planetary rolling mill roller, progressively adjusted Whole feeding motor thrust, adjusts thrust, auxiliary motor current control is 400~500A, main motor according to auxiliary motor size of current Power is 1400~1600KW, and mair motor speed is 1400~2000r/min, and deep bid rotating speed is 500~580rpm；（7）The lengthening coefficient of the pipe shut out is 8~16, produces very big deformation energy in rolling, the temperature of pipe for 720~ 920 DEG C, the pipe that chilling makes to shut out of then spraying water has tiny equi-axed crystal, and good drawability and excellent wall thickness are public Difference, spray water chilling when water temperature be less than 35 DEG C, pressure 1.5~4 kg, 50~100m of spray flow3/h；（8）Pipe is curled into coil pipe base on coiling system and is used for following process, by the one end of pipe before pipe curling Introduce prebending machine, by pipe around prebending machine one enclose after tightened with adhesive plaster, then pre- bending machine is adjusted to suitable pre-bending position Put and be crimped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610017233.1A CN105964693B (en) | 2016-01-12 | 2016-01-12 | The planetary rolling production technology of nickel base superalloy pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610017233.1A CN105964693B (en) | 2016-01-12 | 2016-01-12 | The planetary rolling production technology of nickel base superalloy pipe |
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| Publication Number | Publication Date |
|---|---|
| CN105964693A CN105964693A (en) | 2016-09-28 |
| CN105964693B true CN105964693B (en) | 2018-02-02 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108517478B (en) * | 2018-04-04 | 2019-10-29 | 浙江久立特材科技股份有限公司 | A kind of manufacturing process of the small-bore accurate pipe of 718 alloy |
| CN109016449B (en) * | 2018-08-30 | 2023-11-24 | 华南理工大学 | Method and equipment for rolling and forming ultrahigh molecular weight polymer based on dynamic extension |
| CN110743914B (en) * | 2019-10-14 | 2020-10-13 | 武汉科技大学 | Method for determining technological parameters of three-roller planetary rolling bismuth-containing stainless steel bar |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4876870A (en) * | 1987-03-26 | 1989-10-31 | Outokumpu Oy | Method for manufacturing tubes |
| CN1390655A (en) * | 2002-07-24 | 2003-01-15 | 江苏兴荣高新科技股份有限公司 | Warm machining method for macking carbon steel pipe or alloy steel pipe |
| CN1390678A (en) * | 2002-07-24 | 2003-01-15 | 江苏兴荣高新科技股份有限公司 | Warm machining method for making titanium or Ti-alloy pipe |
| CN2569933Y (en) * | 2002-07-24 | 2003-09-03 | 江苏兴荣高新科技股份有限公司 | Multi-roller planetary tube grimper |
| JP5765191B2 (en) * | 2011-11-01 | 2015-08-19 | 新日鐵住金株式会社 | Method for producing seamless pipe made of high Cr-high Ni base alloy |
-
2016
- 2016-01-12 CN CN201610017233.1A patent/CN105964693B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4876870A (en) * | 1987-03-26 | 1989-10-31 | Outokumpu Oy | Method for manufacturing tubes |
| CN1390655A (en) * | 2002-07-24 | 2003-01-15 | 江苏兴荣高新科技股份有限公司 | Warm machining method for macking carbon steel pipe or alloy steel pipe |
| CN1390678A (en) * | 2002-07-24 | 2003-01-15 | 江苏兴荣高新科技股份有限公司 | Warm machining method for making titanium or Ti-alloy pipe |
| CN2569933Y (en) * | 2002-07-24 | 2003-09-03 | 江苏兴荣高新科技股份有限公司 | Multi-roller planetary tube grimper |
| JP5765191B2 (en) * | 2011-11-01 | 2015-08-19 | 新日鐵住金株式会社 | Method for producing seamless pipe made of high Cr-high Ni base alloy |
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| Publication number | Publication date |
|---|---|
| CN105964693A (en) | 2016-09-28 |
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