CN105921651A - Rolling method of high-temperature alloy high cylinder thin-walled ring part - Google Patents

Rolling method of high-temperature alloy high cylinder thin-walled ring part Download PDF

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Publication number
CN105921651A
CN105921651A CN201610484899.8A CN201610484899A CN105921651A CN 105921651 A CN105921651 A CN 105921651A CN 201610484899 A CN201610484899 A CN 201610484899A CN 105921651 A CN105921651 A CN 105921651A
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CN
China
Prior art keywords
ring
sleeve
rolling
height
cake
Prior art date
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Pending
Application number
CN201610484899.8A
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Chinese (zh)
Inventor
彭谦之
李建军
朴学华
魏志文
黄茂林
彭意志
向前
张强
贾贝
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China National South Aviation Industry Co Ltd
Original Assignee
China National South Aviation Industry Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China National South Aviation Industry Co Ltd filed Critical China National South Aviation Industry Co Ltd
Priority to CN201610484899.8A priority Critical patent/CN105921651A/en
Publication of CN105921651A publication Critical patent/CN105921651A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21HMAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H1/00Making articles shaped as bodies of revolution
    • B21H1/06Making articles shaped as bodies of revolution rings of restricted axial length

Abstract

The invention provides a rolling method of a high-temperature alloy high cylinder thin-walled ring part. The rolling method generally comprises the following steps: blanking, heading, punching, coating paint, charging, rolling ring and ejecting a ring part out. Through the optimized steps of the method, the high cylinder thin-walled ring part can be formed on a ring rolling machine; the labor intensity is greatly reduced; the forging times are reduced; the efficiency is improved by over 30%; the energy consumption can also be reduced; the processing period can be shortened; the product is high in size accuracy and high in appearance quality; the qualification rate of forgings is increased; the machining allowance is reduced by 30%-50%; the forgings are more uniform in structures and better in comprehensive mechanical properties.

Description

A kind of rolling method of high temperature alloy height cylinder thin-wall annular part
Technical field
The present invention relates to the milling method of a kind of annular forging piece, particularly relate to a kind of milling method for high cylinder thin wall high temperature alloy ring, particularly to the milling method of a kind of high temperature alloy height cylinder thin-wall annular part.
Background technology
The annular elements such as aeroengine combustor liner work for a long time under rugged environment, it is desirable to part has preferable mechanical property and structure stability.This forging is high temperature alloy, has that wall thickness is little, the most relatively high, and forging difficulty is big.The most general technique using open die forging base to add fullering with the core bar is produced for this forging.There is the shortcomings such as productive labor intensity is big, forging times is many, unstable product quality in this technique.Especially during fullering with the core bar, easily there are the defects such as forge crack in ring, causes bigger economic loss, there is security-hidden trouble, affects payment and the use of forging.
Summary of the invention
The technical problem to be solved in the present invention is to provide the milling method of a kind of high temperature alloy height cylinder thin-wall annular part, so that noted earlier problem is reduced or avoided.
Specifically, the present invention provides the milling method of a kind of high temperature alloy height cylinder thin-wall annular part, the method can shape high cylinder thin-wall annular part on Ring Rolling Machine, big to solve free forging height cylinder thin wall annular element difficulty, the problems such as forging times is many, labor intensity is big.
For solving above-mentioned technical problem, the present invention proposes the milling method of a kind of high temperature alloy height cylinder thin-wall annular part, comprises the steps:
1) blanking;
2) upset;
3) punching and coating coating;
4) charging;
5) rolling ring;
6) ring ejects.
Preferably, described step 1) farther include following steps: during blanking, the volume of sawing pieces of bar stock is equal to 3/2 times of the volume of ring to be produced;The pieces of bar stock of sawing is placed in heating furnace heating 800-900 DEG C, and temperature retention time (unit minute) is multiplied by 0.4 by bar diameter (unit millimeter) and is calculated.Being again heated to 1140-1180 DEG C, temperature retention time (unit minute) is that bar diameter (unit millimeter) is multiplied by 0.6 and is calculated.
Preferably, described step 2) farther include following steps: step 1) after while hot blank is placed in jumping-up on forcing press or forging hammer, the height after blank jumping-up is the 2/5-1/2 of ring height to be produced.
Preferably, described step 3) farther include following steps: being punched out obtaining hollow cake on forging hammer or forcing press to the biscuit after jumping-up, punching aperture is the 1/3 of biscuit diameter.After described hollow cake cools down, its surface is carried out Shot Blasting, may utilize abrasive machine such as the defect such as jagged or air pressure gun is polished.Hollow cake afterwards is heated to 80-120 DEG C, is incubated 40-60min, uniformly coats coating on its surface, and coating layer thickness is 0.3-0.5mm.After coating coating, being placed in 50-70 DEG C of electric furnace drying, baking time is 2-3h.
Preferably, described step 4) farther include following steps: by through step 3) process after hollow cake be placed in heating furnace and be heated to 800-900 DEG C, temperature retention time (unit minute) is that cake thickness (unit millimeter) is multiplied by 0.4.Being again heated to 1140-1180 DEG C, temperature retention time (unit minute) is that cake thickness (unit millimeter) is multiplied by 0.6.After heating, described hollow cake is placed on the mandrel of Ring Rolling Machine, within being placed in being arranged at the sleeve inside the home roll of Ring Rolling Machine.
Preferably, described step 4) farther include following steps: with two for positioning the hole, location of hollow cake and being arranged at the alignment pin in hole, described location on sleeve;After described hollow cake is placed on the mandrel of Ring Rolling Machine and is positioned by described alignment pin, operate ring rolling machine main roll, allow it clamp hollow cake.After hollow cake clamps, pull out the alignment pin for positioning hollow cake.
Preferably, the internal diameter of described sleeve is 1.02 times of ring external diameter to be produced, and its height is 1.05 times of ring height to be produced.
Preferably, there is an outer lug boss below described sleeve, this boss coordinates with the groove existed below ring rolling machine main roll, prevents sleeve upper and lower play during rolling over ring.
Preferably, described step 5) farther include following steps: operation Ring Rolling Machine carries out rolling over ring, and now home roll rotating speed is 2rad/s, and home roll feed speed is 0.5-1mm/s.Until ring height length to time concordant with sleeve height, stop home roll feeding, and ring is carried out full circle.
Preferably, described step 6) farther include following steps: by step 5) in the related sleeve of ring after rolling ring be placed on gasket ring, utilize punching pin the most shaped good ring to be ejected from sleeve.
Present invention have the advantage that 1) use molding annular element of the present invention, greatly reduce labor intensity, decrease forging times, efficiency improves more than 30%, moreover it is possible to reduce energy consumption, shortens the process-cycle.2) product size precision is high, and presentation quality is good, improves forging qualification rate.3) machine-finish allowance 30%~50% is reduced.4) forging tissue is more uniform, and comprehensive mechanical performance is more excellent.
In sum, the present invention, relative to existing technique, has and is significantly improved effect, overcomes defect present in existing technique.The annular element using the method for the present invention to be produced has the features such as dimensional accuracy height, even tissue, function admirable.
Accompanying drawing explanation
The following drawings is only intended to, in schematically illustrating the present invention and explaining, not delimit the scope of the invention.Wherein,
Fig. 1 is shown that the schematic flow sheet of the milling method of the high temperature alloy height cylinder thin-wall annular part according to specific embodiment according to the present invention.
Detailed description of the invention
In order to the technical characteristic of the present invention, purpose and effect are more clearly understood from, the now detailed description of the invention of the comparison accompanying drawing explanation present invention.Wherein, identical parts use identical label.
As aforementioned, the invention provides the milling method of a kind of high temperature alloy height cylinder thin-wall annular part, the method is by the step optimized, can be at Ring Rolling Machine (particularly horizontal type ring rolling machine) the high cylinder thin-wall annular part of upper shaping, big to solve free forging height cylinder thin wall annular element difficulty, the problems such as forging times is many, labor intensity is big.
Fig. 1 is shown that the schematic flow sheet of milling method of the high temperature alloy height cylinder thin-wall annular part according to specific embodiment according to the present invention, as it can be seen, the milling method of the high temperature alloy height cylinder thin-wall annular part of the present invention generally comprises following steps:
1) blanking;
2) upset;
3) punching and coating coating;
4) charging;
5) rolling ring;
6) ring ejects.
Further illustrate the details of each step with reference to the accompanying drawings.
Step 1) blanking.
During blanking, the volume of sawing pieces of bar stock is equal to 3/2 times of the volume of ring to be produced;The pieces of bar stock of sawing is placed in heating furnace heating 800-900 DEG C, and temperature retention time (unit minute) is multiplied by 0.4 by bar diameter (unit millimeter) and is calculated.Being again heated to 1140-1180 DEG C, temperature retention time (unit minute) is that bar diameter (unit millimeter) is multiplied by 0.6 and is calculated.
Step 2) upset.
After blanking, blank being placed in jumping-up while hot on forcing press or forging hammer, the height after blank jumping-up is the 2/5-1/2 of ring height to be produced.
Step 3) punching and coating coating.
After upset, being punched out obtaining hollow cake to the biscuit after jumping-up on forging hammer or forcing press, punching aperture is the 1/3 of biscuit diameter.After described hollow cake cools down, its surface is carried out Shot Blasting, may utilize abrasive machine such as the defect such as jagged or air pressure gun is polished.Hollow cake afterwards is heated to 80-120 DEG C, is incubated 40-60min, uniformly coats coating on its surface, and coating layer thickness is 0.3-0.5mm.After coating coating, being placed in 50-70 DEG C of electric furnace drying, baking time is 2-3h.
Step 4) charging.
After punching and coating coating, by through step 3) process after hollow cake be placed in heating furnace and be heated to 800-900 DEG C, temperature retention time (unit minute) is that cake thickness (unit millimeter) is multiplied by 0.4.Being again heated to 1140-1180 DEG C, temperature retention time (unit minute) is that cake thickness (unit millimeter) is multiplied by 0.6.After heating, described hollow cake is placed on the mandrel 100 of Ring Rolling Machine, within being placed in being arranged at the sleeve 300 inside the home roll 200 of Ring Rolling Machine.
With two for the hole, location 301 (in figure, sectional structure is only capable of seeing hole, a location) positioning hollow cake and the alignment pin 302 (during alignment pin is inserted in hole, location in figure, position overlaps each other) being arranged in hole, described location 301 on sleeve 300;After described hollow cake is placed on the mandrel 100 of Ring Rolling Machine and is positioned by described alignment pin 302, operate ring rolling machine main roll 200, allow it clamp hollow cake.After hollow cake clamps, pull out the alignment pin 302 for positioning hollow cake.
The internal diameter of sleeve 300 is 1.02 times of ring external diameter to be produced, and its height is 1.05 times of ring height to be produced.
There is an outer lug boss 303 below sleeve 300, this boss 303 coordinates with the groove existed below ring rolling machine main roll 200, prevents sleeve 300 upper and lower play during rolling over ring.
Step 5) rolling ring.
After charging, operation Ring Rolling Machine carries out rolling over ring, and now home roll rotating speed is 2rad/s, and home roll 200 feed speed is 0.5-1mm/s.Until ring height length to time concordant with sleeve height, stop home roll 200 feeding, and ring is carried out full circle.
Step 6) ring ejects.
After rolling ring, related for ring sleeve 300 is placed on gasket ring 400, utilizes punching pin 500 the most shaped good ring to be ejected from sleeve 300.
Embodiment 1
Below in conjunction with previous process flow process, as a example by the processing of GH2132 alloy height cylinder thin-wall annular part, describe the operation of rolling in detail.
After bar is pressed Φ 150mm × 250mm blanking, put into insulation 60min in the electric furnace of 900 DEG C, then furnace temperature is increased to 1140 DEG C, be incubated 90min.It is 75mm that blank after heating is placed in jumping-up to height on forging hammer, uses the punching pin of Φ 100 to be punched out blank.After blank cools down, again by blank heating to 120 DEG C, being incubated 40min, at blank surface even application coating, coating layer thickness is 0.3-0.5mm.After spraying, blank is placed in the electric furnace of 70 DEG C baking 2h.Then after moving to blank rotary 900 DEG C of electric furnaces are incubated 30min, furnace temperature is increased to 1140 DEG C, is incubated 45min.Again blank rotary is moved on Ring Rolling Machine.Operation core roller of ring rolling machine clamping blank, pulls out the alignment pin being positioned at below blank.The most i.e. carry out rolling over ring.Now ring rolling machine main roll rotating speed is 2rad/s, and feed rate of idle roll is 0.5mm/s.When ring rotates relatively stable, feed rate of idle roll is gradually risen to 1mm/s.When blank gradually rises up to concordant with sleeve height, slow down gradually feed rate of idle roll.When blank height and sleeve are highly consistent, stop core roller feeding, line number of going forward side by side circle full circle.After full circle, related for blank sleeve is placed on the gasket ring of forging hammer, utilizes punching pin ring to be ejected.
Present invention have the advantage that 1) use molding annular element of the present invention, greatly reduce labor intensity, decrease forging times, efficiency improves more than 30%, moreover it is possible to reduce energy consumption, shortens the process-cycle.2) product size precision is high, and presentation quality is good, improves forging qualification rate.3) machine-finish allowance 30%~50% is reduced.4) forging tissue is more uniform, and comprehensive mechanical performance is more excellent.
In sum, the invention provides the technological process of a kind of optimization, it is provided that the specific design of parameter before and after interrelated, in practice it has proved that can have and be significantly improved effect, overcome defect present in existing technique.The annular element using the method for the present invention to be produced has the features such as dimensional accuracy height, even tissue, function admirable.
Although it will be appreciated by those skilled in the art that the present invention is to be described according to the mode of multiple embodiments, but the most each embodiment only comprising an independent technical scheme.For the sake of in description, so narration is only used to understand; description should be understood by those skilled in the art as an entirety, and technical scheme involved in each embodiment regarded as and can understand protection scope of the present invention in the way of being mutually combined into different embodiment.
The foregoing is only the schematic detailed description of the invention of the present invention, be not limited to the scope of the present invention.Any those skilled in the art, the equivalent variations made, revises and combines on the premise of without departing from the design of the present invention and principle, all should belong to the scope of protection of the invention.

Claims (10)

1. a milling method for high temperature alloy height cylinder thin-wall annular part, comprises the steps:
1) blanking;
2) upset;
3) punching and coating coating;
4) charging;
5) rolling ring;
6) ring ejects.
2. the method for claim 1, it is characterised in that described step 1) farther include Following steps: during blanking, the volume of sawing pieces of bar stock is equal to 3/2 times of the volume of ring to be produced; The pieces of bar stock of sawing is placed in heating furnace heating 800-900 DEG C, and temperature retention time (unit minute) is by rod Material diameter (unit millimeter) is multiplied by 0.4 and is calculated.Being again heated to 1140-1180 DEG C, temperature retention time is (single Position minute) it is that bar diameter (unit millimeter) is multiplied by 0.6 and is calculated.
3. method as claimed in claim 2, it is characterised in that described step 2) farther include Following steps: step 1) afterwards while hot blank is placed in jumping-up on forcing press or forging hammer, blank jumping-up After the 2/5-1/2 that height is ring height to be produced.
4. the method for claim 1, it is characterised in that described step 3) farther include Following steps: be punched out obtaining hollow cake, punching on forging hammer or forcing press to the biscuit after jumping-up Aperture is the 1/3 of biscuit diameter.After described hollow cake cools down, its surface is carried out Shot Blasting, as The defect such as jagged may utilize abrasive machine or air pressure gun is polished.Hollow cake afterwards is heated to 80-120 DEG C, being incubated 40-60min, uniformly coat coating on its surface, coating layer thickness is 0.3-0.5mm. After coating coating, being placed in 50-70 DEG C of electric furnace drying, baking time is 2-3h.
5. the method for claim 1, it is characterised in that described step 4) farther include Following steps: by through step 3) process after hollow cake be placed in heating furnace and be heated to 800-900 DEG C, Temperature retention time (unit minute) is that cake thickness (unit millimeter) is multiplied by 0.4.It is again heated to 1140-1180 DEG C, Temperature retention time (unit minute) is that cake thickness (unit millimeter) is multiplied by 0.6.After heating, by institute State hollow cake to be placed on the mandrel (100) of Ring Rolling Machine, be placed in being arranged at the home roll (200) of Ring Rolling Machine Within the sleeve (300) of inner side.
6. method as claimed in claim 5, farther includes following steps: sleeve (300) is upper to be carried There are two for positioning the hole, location (301) of hollow cake and being arranged in hole, described location (301) Alignment pin (302);Described hollow cake is placed on the mandrel (100) of Ring Rolling Machine and by described alignment pin (302) after location, operation ring rolling machine main roll (200), allow it clamp hollow cake.Treat hollow cake After clamping, pull out the alignment pin (302) for positioning hollow cake.
7. the method as described in claim 5-6, it is characterised in that the internal diameter of described sleeve (300) is 1.02 times of ring external diameter to be produced, its height is 1.05 times of ring height to be produced.
8. the method as described in claim 5-7, it is characterised in that described sleeve (300) lower section exists One outer lug boss (303), the groove that this boss (303) exists with ring rolling machine main roll (200) lower section enters Row coordinates, and prevents sleeve (300) upper and lower play during rolling over ring.
9. the method for claim 1, it is characterised in that described step 5) farther include Following steps: operation Ring Rolling Machine carries out rolling over ring, and now home roll rotating speed is 2rad/s, home roll (200) feeding Speed is 0.5-1mm/s.Until ring height length to time concordant with sleeve height, stop home roll (200) and enter Give, and ring is carried out full circle.
10. the method for claim 1, it is characterised in that described step 6) farther include Following steps: by step 5) in the related sleeve of ring (300) after rolling ring be placed in gasket ring (400) On, utilize punching pin (500) the most shaped good ring to be ejected from sleeve (300).
CN201610484899.8A 2016-06-28 2016-06-28 Rolling method of high-temperature alloy high cylinder thin-walled ring part Pending CN105921651A (en)

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CN108856609A (en) * 2018-07-10 2018-11-23 无锡派克新材料科技股份有限公司 A kind of heavy wall 718Plus alloy annular forging milling method
CN110479840A (en) * 2019-08-02 2019-11-22 武汉理工大学 The high muscle Cylinder shape constructional element envelope roll milling forming method of thin-walled
CN110479839A (en) * 2019-08-02 2019-11-22 武汉理工大学 For shaping the envelope roller parameter acquiring method of the high muscle Cylinder shape constructional element of thin-walled

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108856609A (en) * 2018-07-10 2018-11-23 无锡派克新材料科技股份有限公司 A kind of heavy wall 718Plus alloy annular forging milling method
CN110479840A (en) * 2019-08-02 2019-11-22 武汉理工大学 The high muscle Cylinder shape constructional element envelope roll milling forming method of thin-walled
CN110479839A (en) * 2019-08-02 2019-11-22 武汉理工大学 For shaping the envelope roller parameter acquiring method of the high muscle Cylinder shape constructional element of thin-walled
CN110479840B (en) * 2019-08-02 2020-08-18 武汉理工大学 Enveloping rolling forming method for thin-wall high-rib cylindrical component

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