CN105290281A - Production method for large thick-wall nickel-contained ring forgings - Google Patents
Production method for large thick-wall nickel-contained ring forgings Download PDFInfo
- Publication number
- CN105290281A CN105290281A CN201510824159.XA CN201510824159A CN105290281A CN 105290281 A CN105290281 A CN 105290281A CN 201510824159 A CN201510824159 A CN 201510824159A CN 105290281 A CN105290281 A CN 105290281A
- Authority
- CN
- China
- Prior art keywords
- ring
- forging
- production method
- rolling
- fire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H1/00—Making articles shaped as bodies of revolution
- B21H1/06—Making articles shaped as bodies of revolution rings of restricted axial length
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention discloses a production method for large thick-wall nickel-contained ring forgings. According to the technical scheme, the method comprises the steps of blank forming, ring rolling and heat treatment. The generation of inner circle collapse and grooves of the upper end face is effectively avoided by increasing the height of a blank, reasonably distributing the radial and axial deformation amounts and increasing the feed rate of a conical roller in the ring rolling process. The ring forgings are spread out after being rolled, are subjected to air cooling to be 250-350 DEG C and then are loaded into a furnace for annealing. Therefore, the requirements for the microstructure, performance and the like of rolled steel are met.
Description
Technical field
The invention belongs to the production technical field of ferrous materials, relate to a kind of production method of annular forging piece, particularly relate to the production method of the nickeliferous ring forging of a kind of large thick-wall.
Background technology
Ring rolling is also known as rolling or reaming, it is by the compatible deformation repeatedly of footpath, axial co-deflection district material, make ring base in growth process, produce sufficient plastic deformation and volume transfer, control in conjunction with rational temperature again, the Fine Texture of Material of optimization can be obtained, thus forming high performance high-quality ring, looping mill rolling technique occupies critical role in middle or small ring part such as production bearing ring, gear blank etc.Along with the develop rapidly of industry, no matter be electric power, offshore oil platform, ship for civil use, or especially big heavy-duty machinery, military project, Aero-Space etc. increase day by day to the demand of large thick-wall ring forging.
The roll forming of large thick-wall ring forging uses horizontal machine for rolling ring usually, its shaping sketch as shown in Figure 1, ring blank is placed horizontally between the driven roller of radial-axial ring rolling mill and core roller, driven roller rotates, core roller does feed motion, ring iterates through roll gap and produces continuous and local distortion under driven roller and the effect of core roller, a pair guide roller (also known as embracing roller) is symmetrically distributed in entrance and exit both sides, deformed area, ring rolling is play the guiding role, ring is often by roll gap rolling one turn, its radial direction (X to) wall thickness reduces, axially (Y-direction) then can increase accordingly.Epicone roller and lower cone roller are taper, process respectively to the horizontal upper end face of ring and lower surface.
Because large thick-wall nickeliferous (1.6-3.75%Ni) ring forging build is huge, and hot procedure is in high temperature, high pressure and unstable shaped state, and influence factor is many, is difficult to control, and its production technology has the following disadvantages:
(1) large thick-wall nickeliferous ring forging blank weight is often beyond 5t, and blank volume is large, and final ring forging blank dimension is difficult to reasonable distribution footpath, axial deflection in rolling ring process, causes ring forging upper surface generation groove or upper surface inner circle to be subsided.By increasing the production surplus of ring forging height and internal diameter direction, the defect turning such as groove to be fallen, but ring lumber recovery is low;
(2) by improving the heating-up temperature of ring forging, increase the hot-workability of steel, although this method eliminates the groove defect of large-scale ring forging upper surface, because of ring, rolling temperature is high eventually, makes finished product ring forging coarse grains, tissue odds;
(3) the nickeliferous ring forging dimensions of large thick-wall is large, and hot procedure is in high temperature, high pressure and unstable shaped state, and finished product ring forging ovality is large.
(4) in the rolling ring later stage because the growth rate of ring diameter is fast, and embrace a roller active force and do not adjust in time, ring ovality finally can be caused large, but ring size is large, ring wall is thick, ovality is not easily corrected;
(5) the nickeliferous ring forging of large thick-wall different due to cooldown rate of surface and core in cooling procedure, in cooling procedure, ring from outward appearance to inner essence can obtain different tissues and make ring uneven microstructure.
Summary of the invention
For the defect of prior art, the object of the present invention is to provide the production method of the nickeliferous ring forging of a kind of large thick-wall, the inventive method solves the problems of the prior art, and the ring forging lumber recovery obtained thus is high, steel structure property improves, and can meet the demands.
To achieve these goals, the present invention adopts following technical scheme:
A production method for the nickeliferous ring forging of large thick-wall, comprises the steps:
Base step, makes annular blank by cylindrical material;
Roll over ring step, described annular blank heating is placed on the axial ring rolling machine of footpath to carry out how ring rolled over by fire, thus obtains ring forging base;
Heat treatment step, spreads multiple described ring forging base out air cooling to 250-350 DEG C, carries out annealing in process afterwards.
Machining steps, is processed into finished product ring forging by the ring forging base after described heat treatment.
In aforementioned production method, as a kind of preferred embodiment, in described base step, the ratio of height to diameter (H/D) of described cylindrical material is 1.6≤H/D≤2.5, and wherein H is the height of cylindrical material, and D is the diameter of cylindrical material.More preferably, the diameter D of described cylindrical material is 850-900mm.
In aforementioned production method, as a kind of preferred embodiment, in described base step, first described cylindrical material is heated to deformation temperature, then obtains described annular blank through forging and punching; More preferably, the initial forging temperature of described forging is >=1100 DEG C, and final forging temperature is >=800 DEG C; Described forging is followed successively by: first time pier thick, chamfered edge, second time pier are thick, round as a ball, thick, the slight rolling of third time pier, the 4th pier are thick.More preferably, described deformation temperature is 1160-1260 DEG C.
In aforementioned production method, as a kind of preferred embodiment, in described base step, the size of the described annular blank obtained is as follows: external diameter is 1000-2000mm, and internal diameter is 200-500mm, is highly 200-700mm.
In aforementioned production method, as a kind of preferred embodiment, in described rolling ring step, rolling over the truing phase of ring process, ring ovality is measured by measuring stick, if ovality exceedes setting, be then in the ring upper and lower end face of rolling over ring process and with core roller for fulcrum radially stretching ring is to realize ring full circle by the roller clamping of boring up and down of described Ring Rolling Machine.Preferably, the setting of described ovality is≤8mm.
In aforementioned production method, as a kind of preferred embodiment, in described rolling ring step, the temperature of described heating is 1160-1260 DEG C.
In aforementioned production method, as a kind of preferred embodiment, in described rolling ring step, the fire that ring rolled over by described many fire is 2-4 time.The beginning temperature that ring rolled over by each fire is >=1150 DEG C, and final temperature is >=800 DEG C.More preferably, when the fire that ring rolled over by described many fire is 2, after ring rolled over by the 1st fire, the external diameter of blank is the half of described finished product ring forging and described annular blank outside dimension sum.
In aforementioned production method, as a kind of preferred embodiment, in described heat treatment step, the temperature of described annealing in process is 650-710 DEG C, and annealing time can be determined according to finished product ring forging wall thickness.
In aforementioned production method, as a kind of preferred embodiment, the specification of described finished product ring forging is as follows: external diameter OD is 3000-5000mm; Wall thickness is 100-500mm; High H is 200-500mm.
In aforementioned production method, as a kind of preferred embodiment, in described finished product ring forging, nickel content is 1.6-3.75wt%.
Compared with prior art, the present invention has following beneficial effect:
(1) the method for the present invention generation that effectively prevents large thick-wall nickeliferous ring forging upper surface groove or upper surface inner circle to subside mainly through following three aspects:
1. the height of making blank of ring blank is suitably increased.
2. formulate many fire such as two fire and roll over ring, as specified, ring outside dimension rolled over by a fire, and a fire melts down the heat time.
3. rolling over the amount of feeding adding auger roller in ring process, two fire are rolled over ring and are easily produced upper surface defect, and this just needs the pressure increasing cone roller, increases the distortion of ring short transverse.
(2) method of the present invention solves the not corrigibility difficult problem of large thick-wall ring forging ovality;
(3) method flaw detection qualification rate of the present invention improves, and the structure property of steel improves;
(4) method of the present invention realizes large thick-wall ring forging footpath, axially mutual compatible deformation, obtains accurate geomery and good tissue, performance.
Accompanying drawing explanation
Fig. 1 is ring parts rolling forming sketch;
Wherein, 1, radial frame; 2, axial rack; 3, home roll; 4, core roller; 5, roller is embraced; 6, roller is bored; 7, locating piece; 8, ring Z-direction draw direction and radial drawing direction (rectification ring)
Fig. 2 is the nickeliferous ring forging micro-organization chart (× 100) of large thick-wall;
Fig. 3 is the nickeliferous ring forging micro-organization chart (× 1000) of large thick-wall;
Fig. 4 is the micro-organization chart (× 1000) of the nickeliferous ring forging of G20Cr2Ni4A large thick-wall that existing Technology for Heating Processing obtains.
Detailed description of the invention
Below by specific embodiment, the present invention is described in detail, but the present invention is not limited to this.
The production method of the nickeliferous ring forging of large thick-wall provided by the invention comprises the following steps:
(1) base: first cylindrical material section is heated to deformation temperature, carry out successively afterwards first time pier thick → chamfered edge → second time pier is thick → round as a ball → thick → slight rolling → four time pier of third time pier slightly → punching, finally annular blank processed (i.e. ring blank).
First, by regulation blanking, and the cylindrical material after blanking is heated to deformation temperature, described deformation temperature is preferably 1160-1260 DEG C (such as: 1165 DEG C, 1180 DEG C, 1200 DEG C, 1220 DEG C, 1240 DEG C, 1250 DEG C, 1255 DEG C), heat time be 3-7h (such as: 3.5h, 5h, 6h, 6.5h), the ratio of height to diameter (H/D) of described cylindrical material is 1.6≤H/D≤2.5 (such as H/D=1.7, H/D=2.0, H/D=2.2, H/D=2.4), wherein H is the height of cylindrical material, D is the diameter of cylindrical material, preferably, the diameter D of described cylindrical material is 850-900mm.
Then, annular blank is obtained through forging and punching; Described forging is followed successively by: first time pier thick, chamfered edge, second time pier are thick, round as a ball, thick, the slight rolling of third time pier, the 4th pier are thick, the initial forging temperature of described forging is >=1100 DEG C (such as 1102 DEG C, 1110 DEG C, 1120 DEG C, 1150 DEG C, 1180 DEG C, 1200 DEG C, 1240 DEG C), and final forging temperature is >=800 DEG C (such as 810 DEG C, 850 DEG C, 880 DEG C, 900 DEG C, 950 DEG C, 1000 DEG C); The size obtaining annular blank after punching is as follows: external diameter is 1000-2000mm, and internal diameter is 200-500mm, is highly 200-700mm.
(2) ring is rolled over: annular blank heating is placed on the axial ring rolling machine of footpath to carry out how ring rolled over by fire, thus obtains ring forging base (i.e. blank ring);
First, annular blank is heated, the temperature of heating is 1160-1260 DEG C (such as: 1165 DEG C, 1180 DEG C, 1200 DEG C, 1220 DEG C, 1240 DEG C, 1250 DEG C, 1255 DEG C), and temperature retention time is according to blank specification, and general temperature retention time is 0.5h/100mm; Preferably, the heat time is 1-5h (such as: 2h, 3h, 4h, 4.5h).
Then, be placed on the axial ring rolling machine of footpath by the annular blank after heating and carry out many heated rollers ring, preferably, the fire that ring rolled over by many fire is 2-4 time.The beginning temperature that ring rolled over by each fire is >=1150 DEG C (such as: 1165 DEG C, 1180 DEG C, 1200 DEG C, 1220 DEG C, 1240 DEG C, 1250 DEG C, 1255 DEG C), and final temperature is >=800 DEG C (such as 810 DEG C, 850 DEG C, 880 DEG C, 900 DEG C, 950 DEG C, 1000 DEG C).Be described for 2 fire below, roll over ring 1st fiery time: be placed in by the annular blank after heating on the axial ring rolling machine of footpath and carry out the 1st fire rolling ring, start temperature >=1150 DEG C, final temperature is >=800 DEG C, and the blank external diameter after ring rolled over by the 1st fire is the half of finished product ring forging and annular blank outside dimension sum; Ring rolled over by 2nd fire: the 1st fire is rolled over the blank heating after ring to 1160-1260 DEG C (such as: 1165 DEG C, 1180 DEG C, 1200 DEG C, 1220 DEG C, 1240 DEG C, 1250 DEG C, 1255 DEG C), heat time is 1-5h, and then the 1st fire after heating rolled over the blank after ring and be placed in and footpath axial ring rolling machine carries out the 2nd fire roll over ring, start temperature >=1150 DEG C, final temperature is >=800 DEG C, until rolling ring is to the specification having more 20-50mm surplus than the dimensions of finished product ring forging.Later stage and the truing phase of ring is rolled at the 2nd fire, the ovality of the ring of carrying out rolling over ring is measured by measuring stick, if ovality exceedes setting, then by described Ring Rolling Machine bore roller clamping ring upper and lower end face up and down and with core roller for fulcrum radially stretching ring is to realize ring full circle and to correct the large effect of ring ovality.The setting of described ovality is≤8mm (such as 2mm, 3mm, 4mm, 5mm, 6mm, 7mm).Rolling in ring process the amount of feeding and pressure that increase cone roller, effectively can avoid upper surface inner circle and subside and the generation of upper surface groove.Add the auger roller amount of feeding and pressure is exactly the pressure adding auger roller in fact, increase the distortion of ring short transverse, because different manufacturers Ring Rolling Machine model is different, power is also different, and therefore, the occurrence of the amount of feeding of cone roller will be determined according to Ring Rolling Machine model.Alternatively, when ring blank and annular blank are rolled in preparation, the height of annular blank to design than normal many 30-50mm, like this in the process of rolling over, the amount of feeding of short transverse becomes large naturally.
Method of the present invention is under the prerequisite not improving ring blank and annular blank heating-up temperature, increase and roll over ring fire time, preventing Yin Wendu from reducing makes material plasticity reduce, when rolling ring fire time is 2 times, one fire is rolled over ring external diameter and can be determined according to factory's heating furnace and finished product ring size, is generally the half of blank external diameter and finished product ring external diameter sum.
Only need control cone roller and core roller, it is larger to roll over ring in ring process, occurs that oval possibility is larger, if roll over ring later stage ovality greatly, and can by boring roller and core roller be corrected.
Rolling over ring truing phase and measure ring ovality by measuring stick, once find that ovality is excessive, by pressing down the little one end of cone roller clamping ring diameter, then along Z-direction stretching ring (as Fig. 1), thus playing the object of correcting ovality.
In the present invention, have passed the metal flow principle of separating in the ring forging operation of rolling, large thick-wall ring forging upper surface groove or the upper surface inner circle Producing reason that subsides is analyzed, when ring in rolling time, although master metal will along the circumferential direction flow, but also can go up current downflow simultaneously, when ring wall thickness Direction distortion amount is larger, on metal, the trend of current downflow is also more obvious, especially for large thick-wall ring forging " wall thickness reduction, highly reduce, the deformation pattern of enlarged-diameter, if blank height of making blank is inadequate, the deflection of rolling over short transverse during ring is limited, just easily produce the defects such as sunken end face, the height and the cone roller volume under pressure that increase ring forging blank have good improvement result to plate defects.
(3) heat treatment: ring forging base and blank ring mustn't coolings in heap after rolling over, (distance between each blank ring and ring preferably >=1m) air cooling must be spread out, ring forging air cooling to the laggard furnace annealing of uniform temperature, thus makes the tissue of steel, performance etc. meet the demands.
In described heat treatment step, control the type of cooling and the annealing charging temperature of ring blank, suppress the phenomenon of tissue odds.As a kind of preferred embodiment, air cooling is to 250-350 DEG C (such as 260 DEG C, 280 DEG C, 300 DEG C, 320 DEG C, 330 DEG C, 340 DEG C), annealing temperature is 650-710 DEG C (such as 660 DEG C, 680 DEG C, 690 DEG C, 700 DEG C, 708 DEG C), annealing time can according to finished product ring wall thickness, preferably, annealing time is 5-20h (such as 5h, 7h, 9h, 11h).
(4) machined: the ring forging base after heat treatment is processed into finished product ring forging.
The wall thickness of the nickeliferous ring forging of finished product heavy wall that the present invention produces is 100-500mm, weight 4-10 ton, and nickel content is 1.6-3.75%.The material of nickeliferous ring forging described in the present invention can be G20Cr2Ni4A.
The size of blank that obtains of each stage in exemplary explanation the inventive method: if pre-acquired finished product ring forging is of a size of: 3558mm (OD) × 3017mm (ID) × 262mm (H), weight: 5744Kg; The blank ring of then producing and ring forging base need the production surplus adding 30mm, and namely ring forging base is of a size of: 3588mm × 2987mm × 292mm, weight 7112Kg; Be of a size of for the production of the ring blank of ring forging base and annular blank: 1690mm (OD) × 300mm (ID) × 430mm (H); Due to cylindrical material produce blank ring and ring forging base time, have scaling loss, have punching clout, therefore completely counted in by these materials wasted, rolles over the weight 7341Kg of cylindrical material of a blank ring and ring forging base needs, H is 1470mm, D is 900mm.
Below by embodiment, method of the present invention is described.
Embodiment 1
The material of the ring forging of rolling is G20Cr2Ni4A, requires that the specification of the ring forging rolled out is: external diameter is 3.6m, and wall thickness is 300mm, is highly 250mm, and gross weight is 6104Kg.Its production method is as follows:
(1) base: Billet cutting is become cylindrical material section, the length H of this material section is 1590mm, material section diameter D is 900mm, material section is heated to about 1200 DEG C, insulation 5h, initial forging temperature is about 1000 DEG C, final forging temperature is about 800 DEG C, carry out successively in this temperature range first time pier thick → chamfered edge → second time pier is thick → round as a ball → thick → slight rolling → four time pier of third time pier slightly → punching, final obtained annular blank, the blank dimension external diameter forged is 1366mm, and internal diameter is 434mm, is highly 400mm.
(2) ring is rolled over: annular blank is put into heating furnace and be heated to about 1200 DEG C, insulation 3h, then placed in Ring Rolling Machine and carried out a fire rolling ring, it is about 1200 DEG C that one fire starts temperature when rolling over ring, and final temperature is 800 DEG C, and radial feed speed is 1.2A, pressure is 1.4A, axial feed velocity is 1.0A, pressure is 1.4A, after one fire rolling ring, the external diameter of blank is 2.5m, and wall thickness is 400mm, is highly 330mm; And then carry out two fire rolling rings, ring rolled over by the same fire of Parameter Conditions that ring rolled over by two fire, the rectification of forging ovality is carried out in the rolling ring later stage, when oval angle value is greater than 8mm, bore roller up and down and clamp the little one end of described ring diameter and with core roller for fulcrum radially stretching ring is to realize ring full circle and to correct the large effect of ring ovality, obtain expecting the ring forging base of wall thickness after rings rolled over by two fire, its external diameter is 3634mm, wall thickness is 334mm, is highly 284mm.
Wherein, Ring Rolling Machine model is: D53K-5000-400/315, and in rolling ring process, footpath/axial feed velocity, pressure all represent by current flow.
(3) heat treatment: ring forging base mustn't cooling in heap after rolling over, must spread (distance >=1m between ring and ring) air cooling out, ring forging is cooled to about 300 DEG C and enters furnace annealing, and annealing temperature is about 700 DEG C, annealing time is 10h, furnace cooling after annealing.
(4) by the ring forging base machining after heat treatment, the finished product ring forging meeting dimensional requirement is finally obtained.The ring forging upper surface groove adopting the present embodiment method to produce and upper surface inner circle are without generation of subsiding, and stock utilization all reaches more than 90%.
The ring forging micro-organization chart that the present embodiment is produced is see Fig. 2 and Fig. 3, and as can be seen from the figure, the microstructure of this ring forging is even, grain size >=6; In addition, the turning ability of this ring forging is good, hardness≤225HBW.
Comparative example
Except heat treatment step is different from embodiment 1, other production processes are identical with embodiment 1.Wherein, the Technology for Heating Processing of this comparative example is as follows: ring have been rolled over about rear air cooling to 650 DEG C afterwards directly shove charge and annealed, and annealing temperature is about 700 DEG C, and annealing time is 10h.
The heterogeneous microstructure of the G20Cr2Ni4A ring forging that this comparative example obtains is as Fig. 4, and as can be seen from the figure, the uneven microstructure in ring forging, grain size is thick.
Claims (10)
1. a production method for the nickeliferous ring forging of large thick-wall, is characterized in that, comprise the steps:
Base step, makes annular blank by cylindrical material;
Roll over ring step, described annular blank heating is placed on the axial ring rolling machine of footpath to carry out how ring rolled over by fire, thus obtains ring forging base;
Heat treatment step, spreads multiple described ring forging base out air cooling to 250-350 DEG C, carries out annealing in process afterwards;
Machining steps, is processed into finished product ring forging by the ring forging base after described heat treatment.
2. production method according to claim 1, is characterized in that, in described base step, the ratio of height to diameter of described cylindrical material is 1.6≤H/D≤2.5, and wherein H is the height of cylindrical material, and D is the diameter of cylindrical material; Preferably, the diameter D of described cylindrical material is 850-900mm.
3. production method according to claim 1, is characterized in that, in described base step, first described cylindrical material is heated to deformation temperature, then obtains described annular blank through forging and punching; Preferably, the initial forging temperature of described forging is >=1100 DEG C, and final forging temperature is >=800 DEG C; Described forging is followed successively by: first time pier thick, chamfered edge, second time pier are thick, round as a ball, thick, the slight rolling of third time pier, the 4th pier are thick; More preferably, described deformation temperature is 1160-1260 DEG C.
4. production method according to claim 1, is characterized in that, in described base step, the size of the described annular blank obtained is as follows: external diameter is 1000-2000mm, and internal diameter is 200-500mm, is highly 200-700mm.
5. production method according to claim 1, it is characterized in that, in described rolling ring step, rolling over the truing phase of ring process, ring ovality is measured by measuring stick, if ovality exceedes setting, then by the roller of cone up and down of described Ring Rolling Machine clamping ring upper and lower end face and with core roller for fulcrum radially stretching ring is to realize ring full circle; Preferably, the setting of described ovality is≤8mm.
6. production method according to claim 1, is characterized in that, in described rolling ring step, the temperature of described heating is 1160-1260 DEG C.
7. production method according to claim 1, is characterized in that, in described rolling ring step, the fire that ring rolled over by described many fire is 2-4 time, and the beginning temperature that ring rolled over by each fire is >=1150 DEG C, and final temperature is >=800 DEG C; Preferably, when the fire that ring rolled over by described many fire is 2, after ring rolled over by the 1st fire, the external diameter of blank is the half of described finished product ring forging and described annular blank outside dimension sum.
8. production method according to claim 1, is characterized in that, in described heat treatment step, the temperature of described annealing in process is 650-710 DEG C.
9. production method according to claim 1, is characterized in that, the specification of described finished product ring forging is as follows: external diameter OD is 3000-5000mm; Wall thickness is 100-500mm; High H is 200-500mm.
10. production method according to claim 1, is characterized in that, in described finished product ring forging, nickel content is 1.6-3.75wt%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510824159.XA CN105290281B (en) | 2015-11-24 | 2015-11-24 | The production method of the nickeliferous ring forging of large thick-wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510824159.XA CN105290281B (en) | 2015-11-24 | 2015-11-24 | The production method of the nickeliferous ring forging of large thick-wall |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105290281A true CN105290281A (en) | 2016-02-03 |
| CN105290281B CN105290281B (en) | 2017-10-27 |
Family
ID=55188479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510824159.XA Active CN105290281B (en) | 2015-11-24 | 2015-11-24 | The production method of the nickeliferous ring forging of large thick-wall |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105290281B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106670359A (en) * | 2016-12-01 | 2017-05-17 | 西北工业大学 | GH4169 alloy ring piece and preparation method thereof |
| CN109773095A (en) * | 2018-11-30 | 2019-05-21 | 什邡市三裕锻件有限公司 | It is a kind of for forging the technique of the hollow forging of high-carbon high-alloy cold work die steel |
| CN116099966A (en) * | 2023-04-07 | 2023-05-12 | 山西天宝集团有限公司 | Down-pressure ring rolling equipment for T-shaped wind power flange |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU498076A1 (en) * | 1972-12-20 | 1976-01-05 | Предприятие П/Я Р-6543 | Method of production of rings |
| CN1390654A (en) * | 2001-06-11 | 2003-01-15 | 大冶特殊钢股份有限公司 | Technology and guide apparatus for rolling round steel of flat steel without pass |
| CN101279347A (en) * | 2008-04-23 | 2008-10-08 | 贵州航宇科技发展有限公司 | Method for rolling and shaping stainless steel conical ring |
| CN104607580A (en) * | 2015-01-23 | 2015-05-13 | 无锡市派克重型铸锻有限公司 | Forging forming technology of aluminum alloy straight-flanked ring with extra-large specification |
| JP2015205305A (en) * | 2014-04-21 | 2015-11-19 | 大同特殊鋼株式会社 | Ring manufacturing method |
-
2015
- 2015-11-24 CN CN201510824159.XA patent/CN105290281B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU498076A1 (en) * | 1972-12-20 | 1976-01-05 | Предприятие П/Я Р-6543 | Method of production of rings |
| CN1390654A (en) * | 2001-06-11 | 2003-01-15 | 大冶特殊钢股份有限公司 | Technology and guide apparatus for rolling round steel of flat steel without pass |
| CN101279347A (en) * | 2008-04-23 | 2008-10-08 | 贵州航宇科技发展有限公司 | Method for rolling and shaping stainless steel conical ring |
| JP2015205305A (en) * | 2014-04-21 | 2015-11-19 | 大同特殊鋼株式会社 | Ring manufacturing method |
| CN104607580A (en) * | 2015-01-23 | 2015-05-13 | 无锡市派克重型铸锻有限公司 | Forging forming technology of aluminum alloy straight-flanked ring with extra-large specification |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106670359A (en) * | 2016-12-01 | 2017-05-17 | 西北工业大学 | GH4169 alloy ring piece and preparation method thereof |
| CN106670359B (en) * | 2016-12-01 | 2018-08-14 | 西北工业大学 | A kind of GH4169 alloy rings and preparation method thereof |
| CN109773095A (en) * | 2018-11-30 | 2019-05-21 | 什邡市三裕锻件有限公司 | It is a kind of for forging the technique of the hollow forging of high-carbon high-alloy cold work die steel |
| CN109773095B (en) * | 2018-11-30 | 2020-08-04 | 什邡市三裕锻件有限公司 | Process for forging high-carbon high-alloy cold-work die steel hollow forging |
| CN116099966A (en) * | 2023-04-07 | 2023-05-12 | 山西天宝集团有限公司 | Down-pressure ring rolling equipment for T-shaped wind power flange |
| CN116099966B (en) * | 2023-04-07 | 2023-06-16 | 山西天宝集团有限公司 | Down-pressure ring rolling equipment for T-shaped wind power flange |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105290281B (en) | 2017-10-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102489639B (en) | Fine-grain roll-forming method for large annular piece made of high alloy steel | |
| CN101439350B (en) | Method for producing seamless steel pipe for producing gas cylinder with heavy caliber for hauled vehicle | |
| CN103722107B (en) | The roll forming of rectangular titanium alloy base is the method for special-shaped thin wall ring | |
| CN101444793B (en) | Method for fabricating seamless steel pipes for large-diameter high-pressure gas cylinders used in trailer production | |
| CN102039313B (en) | Method for producing large-diameter seamless steel pipe for gas cylinder | |
| CN106670359A (en) | GH4169 alloy ring piece and preparation method thereof | |
| CN105568195A (en) | Preparation method for high-accuracy and high-strength titanium alloy seamless tubes | |
| CN105290281A (en) | Production method for large thick-wall nickel-contained ring forgings | |
| CN106180195B (en) | 508 millimeters of heavy caliber seamless steel pipe hot continuous rolling process | |
| CN105436232B (en) | High-quantity hafnium rod manufacturing method | |
| CN107345290A (en) | A kind of manufacture method of TC4 titanium alloy thin walls ring | |
| CN104759849A (en) | Manufacturing method for flange component for controlling automobile exhaust | |
| CN103691854B (en) | The roll forming of cobalt base superalloy straight-flanked ring base is the method for special-shaped thin wall ring | |
| CN107971706A (en) | A kind of production method of super large caliber titanium alloy seamless pipe | |
| CN101020192A (en) | Hot rolling process of seamless steel pipe | |
| CN113976629A (en) | Seamless pipe and preparation method thereof | |
| CN213645740U (en) | Three-piece type flange ball valve cover rolling die | |
| CN104148550B (en) | The roll forming of iron-base superalloy straight-flanked ring base is the method for special-shaped thin wall ring | |
| CN101653814B (en) | Double-expansion process of super-large-inside-diameter forgeable pieces | |
| CN103706737B (en) | The roll forming of stainless steel rectangular ring base is the method for special-shaped thin wall ring | |
| CN101444792B (en) | Method for producing seamless steel pipes used for large-diameter high-pressure gas cylinders | |
| CN113857416B (en) | Process for forging roll shaft forge piece by combining two presses | |
| CN109092900A (en) | The technique of thick-walled pipe wall thickness accuracy in a kind of raising | |
| CN101337312A (en) | Hardware ball-head forming technique | |
| CN112719199B (en) | Preparation method of large-caliber titanium alloy thick-wall pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200416 Address after: 435001 Huangshi Road, Hubei, Huangshi, No. 316 Patentee after: Daye Special Steel Co., Ltd Address before: 435001 Huangshi Road, Hubei, Huangshi, No. 316 Patentee before: DAYE SPECIAL STEEL Co.,Ltd. |