CN109127973A - Cr13 type martensitic stain less steel heavy wall height cylinder ring forging forming method - Google Patents
Cr13 type martensitic stain less steel heavy wall height cylinder ring forging forming method Download PDFInfo
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- CN109127973A CN109127973A CN201811105864.4A CN201811105864A CN109127973A CN 109127973 A CN109127973 A CN 109127973A CN 201811105864 A CN201811105864 A CN 201811105864A CN 109127973 A CN109127973 A CN 109127973A
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- Prior art keywords
- base
- heavy wall
- type
- wall height
- stain less
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/002—Hybrid process, e.g. forging following casting
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention discloses a kind of Cr13 type martensitic stain less steel heavy wall height cylinder ring forging forming methods, it is characterized in that, using the blank heating curve of feature, just base is produced after certain deformation at a certain temperature, again by being pulled out using toolings such as upper anvil, lower V-type anvils to the first base being sleeved on mandrel on press machine, then using roll forming, Cr13 type martensitic stain less steel heavy wall height cylinder ring is obtained.This method is mainly used for Cr13 type martensitic stain less steel heavy wall height cylinder ring forging and molding.
Description
Technical field
The present invention relates to a kind of forging methods of heavy wall height cylinder ring, thick more particularly to Cr13 type martensitic stain less steel
Wall height cylinder ring forging forming method.
Background technique
Cr13 type stainless steel chromium mass fraction is usually the iron-based of body-centered cubic structure in annealed condition 12%~13%
Alloy, it has many advantages, such as, and at low cost, thermal coefficient is high, linear expansion coefficient is small, thus is used widely.For Cr13 type horse
For family name's body stainless steel heavy wall height cylinder ring in forging and molding, since the rolling of the high tubular ring forging of heavy wall is than small, deflection is inadequate
Etc. factors, will cause the coarse of grain size, to influence the performance indicators such as plasticity and the toughness of forging, also to intensity, impact
Etc. there is certain influence, expanding the internal diameter of ring forging can not be synchronous with the increase of ring forging height, and the high tubular ring of heavy wall is caused to be forged
Part can not form completely.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of forgings of Cr13 type martensitic stain less steel heavy wall height cylinder ring
Manufacturing process, the technical scheme comprises the following steps:
The first step lies against Cr13 type martensitic stain less steel steel billet obtained by blanking in heating furnace, at this time the highest in furnace
Furnace temperature≤600 DEG C keep the temperature 2~4h, then keep the temperature after being warming up to 1250 DEG C ± 20 DEG C after then heating furnace is warming up to 850 DEG C ± 20 DEG C
6~8h heats up herein and guarantees total heating time >=12h of the steel billet in furnace in insulating process；
Second step, the steel billet after heating is round as a ball using press machine progress chamfered edge, it is then upset to steel billet progress again, it is upset
Furnace 1~2h of heat preservation is returned than >=2.3, then the steel billet after upset, holding temperature is 1200 DEG C~1300 DEG C；
Steel billet after upset is made just base after press machine carries out rushing through-hole, first base is then returned furnace heat preservation 1 by third step
~2h, holding temperature are 1200 DEG C~1300 DEG C；
4th step pulls out the first base being sleeved on mandrel using upper anvil, lower V-type anvil on press machine, wherein pulling out
Long front mandrel need to be preheated to 150 DEG C~250 DEG C and smear lubricant, during pulling, each single side drafts of upper anvil
For 30~60mm, ratio >=2.0 are pulled out, the first base for completing to pull out after process is returned furnace and keeps the temperature 1~2h, holding temperature is 1200 DEG C~
1300℃；
5th step carries out rolling ring to the first base after pulling using cylindrical type king roller and cylindrical type core roller on machine for rolling ring,
The Cr13 type martensitic stain less steel heavy wall height cylinder ring of size needed for being finally made, wherein rolling over ring ratio >=2.0.
Further, the lubricant is that carbon dust and machine tool lubrication oil are mixed with the ratio of 1~1.5:2 of mass ratio~2.5
Mixture is preferably in a proportion of 1:2.
Further, during the pulling, first base is 100~150mm at a distance from the mandrel shaft shoulder.
Further, in the pulling process, pressing sequence of the upper anvil to the axial each position of first base are as follows: first to close to core
The first base front of the axis shaft shoulder is pressed, and pressing width is the thickness of upper anvil, then from back to front to not since first base rear portion
Pressing section is gradually pressed.
Further, the upper anvil is upper flat anvil.
Further, the upper anvil is upper inverted V type anvil.
Compared with prior art, beneficial effects of the present invention are as follows:
Cr13 type martensitic stain less steel heavy wall height cylinder ring forging forming method of the present invention, first using feature
Blank heating curve at a certain temperature produces just base after certain deformation, solves that forging is subsequent grain size occurs
Coarse problem, then by being pulled out using toolings such as upper anvil, lower V-type anvils to the first base being sleeved on mandrel on press machine
It is long, solve the limitation of the length of press ram.
Detailed description of the invention
Invention is further described in detail with reference to the accompanying drawings and detailed description.
Fig. 1 is the theory structure schematic diagram for pulling out process；
Fig. 2 is the structural schematic diagram of the right view direction of Fig. 1.
Specific embodiment
Implement Cr13 type martensitic stain less steel heavy wall height cylinder ring forging forming method of the present invention to need to provide forging
Make equipment and the toolings such as heating furnace, press machine, machine for rolling ring, manipulator and upper anvil, lower V-type anvil.
Use the material of Cr13 type martensitic stain less steel sample for 1Cr13, main chemical elements content (weight percent
Than) are as follows: C content 0.08%~0.15%, amount containing Mn≤0.60%, si content≤0.60%, amount containing Cr 12.00%~
14.00%, ni content≤0.60%, amount containing S≤0.030%, P content≤0.030%, surplus Fe.
The step of this method, is as follows:
The first step carries out blanking to hexagonal steel bar on cutting machine, and steel billet obtained by blanking is then lain against heating furnace
In, highest furnace temperature≤600 DEG C in furnace at this time, then heating furnace keeps the temperature 2h after being warming up to 850 DEG C, then protects after being warming up to 1250 DEG C
Warm 6h heats up herein and guarantees that total heating time of the steel billet in furnace is 13h in insulating process；
Second step, the steel billet after heating using hydraulic press carry out chamfered edge it is round as a ball, then recycle hydraulic press to steel billet into
Row is upset, and upset ratio is 3.3, then the steel billet after upset is returned furnace heat preservation 1h, and holding temperature is 1300 DEG C；
Third step, carries out the steel billet after upset on hydraulic press to rush after through-hole just base 4 is made as shown in Figure 1, so
First base 4 is returned furnace heat preservation 1h afterwards, holding temperature is 1300 DEG C；
4th step, as shown in Figure 1 and Figure 2, using upper flat anvil 1, lower V-type anvil 2 to being sleeved on mandrel 3 on hydraulic press
First base 4 is pulled out, and in actual production, inverted V type anvil also can be used in upper anvil, and the region that pulling is used on mandrel 3 is circle
The step of column type, pulling, is as follows: mandrel 3 is first preheated to 150 DEG C before being pulled out and smears lubricant, lubricant be carbon dust and
The mixture that machine tool lubrication oil is mixed with mass ratio 1.2:2.3 ratio, then mandrel 3 is fixed by operation machine and is parallel to ground
Face, then first base 4 is set on mandrel 3, then mandrel 3 and just, base 4 is moved between upper flat anvil 1 and lower V-type anvil 2, and
The outer surface of first base 4 is in contact with upper flat anvil 1 and lower V-type anvil 2, and the surface of first base 4 is pressed by upper flat anvil 1, makes first base 4 upper
Plastic deformation between flat anvil 1 and lower V-type anvil 2 and pulled out, the pulling of first base 4 is in upper flat anvil 1 with a lesser single side pressure
Lower amount recycles pressing repeatedly to first 4 outer surface of base and presses that detailed process is as follows repeatedly come what is completed: flat anvil 1 upper first is with every
The single side drafts of secondary 30mm or so presses 4 front of first base close to the mandrel shaft shoulder 31, and pressing width is upper flat anvil 1
Thickness, then upper flat anvil 1 again with the single side drafts of each 30mm or so since first 4 rear portion of base from back to front to not pressing section
It is gradually pressed, after completing the above-mentioned single pass to first base 4 time pressing, mandrel 3 drives one lesser angle of the just rotation of base 4
Degree, then upper flat anvil 1 carries out single pass time pressing to first base 4 again according to above-mentioned single side drafts and pressing sequence, so not
Disconnected repetitive cycling is until first base 4 is pulled out to required length；During pulling, upper flat anvil 1 is needed to first 4 axial surface of base
On different location gradually pressed, so mandrel 3 need axial feeding make just base 4 move axially, mandrel 3 every time give
Base 4 is maintained at 100mm at a distance from the mandrel shaft shoulder 31 to input depending on the thickness of upper flat anvil 1, and at the beginning of during pulling,
Pulling is than being 3.0.The first base 4 after pulling is returned furnace heat preservation 1h after completion pulling process, holding temperature is 1300 DEG C；
5th step carries out rolling ring to the first base 4 after pulling using cylindrical type king roller and cylindrical type core roller on machine for rolling ring,
The 1Cr13 type martensitic stain less steel heavy wall height cylinder ring of size needed for being finally made, wherein rolling over ring ratio is 3.0.
Claims (6)
1. a kind of Cr13 type martensitic stain less steel heavy wall height cylinder ring forging forming method, which comprises the following steps:
The first step lies against Cr13 type martensitic stain less steel steel billet obtained by blanking in heating furnace, at this time the highest furnace temperature in furnace
≤ 600 DEG C, 2~4h is kept the temperature after then heating furnace is warming up to 850 DEG C ± 20 DEG C, then heat preservation 6 after being warming up to 1250 DEG C ± 20 DEG C~
8h heats up herein and guarantees total heating time >=12h of the steel billet in furnace in insulating process；
Second step, the steel billet after heating is round as a ball using press machine progress chamfered edge, it is then upset to steel billet progress again, upset ratio >=
2.3, then the steel billet after upset is returned furnace 1~2h of heat preservation, holding temperature is 1200 DEG C~1300 DEG C；
Just base is made after press machine carries out rushing through-hole in steel billet after upset by third step, then first base return furnace heat preservation 1~
2h, holding temperature are 1200 DEG C~1300 DEG C；
4th step pulls out the first base being sleeved on mandrel using upper anvil, lower V-type anvil on press machine, wherein before pulling
Mandrel need to be preheated to 150 DEG C~250 DEG C and smear lubricant, and during pulling, each single side drafts of upper anvil is 30
~60mm pulls out ratio >=2.0, and the first base after completion being pulled out process returns furnace and keeps the temperature 1~2h, and holding temperature is 1200 DEG C~1300
℃；
5th step carries out rolling ring to the first base after pulling using cylindrical type king roller and cylindrical type core roller on machine for rolling ring, finally
The Cr13 type martensitic stain less steel heavy wall height cylinder ring of size needed for being made, wherein rolling over ring ratio >=2.0.
2. Cr13 type martensitic stain less steel heavy wall height cylinder ring forging forming method according to claim 1, feature exist
In the lubricant is the mixture that carbon dust and machine tool lubrication oil are mixed with the ratio of 1~1.5:2 of mass ratio~2.5, preferred proportion
For 1:2.
3. Cr13 type martensitic stain less steel heavy wall height cylinder ring forging forming method according to claim 1, feature exist
During the pulling, first base is 100~150mm at a distance from the mandrel shaft shoulder.
4. Cr13 type martensitic stain less steel heavy wall height cylinder ring forging forming method according to claim 1, feature exist
In, in the pulling process, upper anvil to first base axially each position pressing sequence are as follows: first to close to the mandrel shaft shoulder first base before
Portion is pressed, pressing width be upper anvil thickness, then since first base rear portion from back to front to do not press section carry out gradually
Pressing.
5. Cr13 type martensitic stain less steel heavy wall height cylinder ring forging forming method according to claim 1, feature exist
In the upper anvil is upper flat anvil.
6. Cr13 type martensitic stain less steel heavy wall height cylinder ring forging forming method according to claim 1, feature exist
In the upper anvil is upper inverted V type anvil.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2017109074199 | 2017-09-29 | ||
| CN201710907419 | 2017-09-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109127973A true CN109127973A (en) | 2019-01-04 |
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ID=64823181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811105864.4A Pending CN109127973A (en) | 2017-09-29 | 2018-09-21 | Cr13 type martensitic stain less steel heavy wall height cylinder ring forging forming method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110802192A (en) * | 2019-10-12 | 2020-02-18 | 中冶陕压重工设备有限公司 | Core rod for drawing cylinder and using method thereof |
| CN111154961A (en) * | 2019-12-31 | 2020-05-15 | 无锡宝露重工有限公司 | Method for manufacturing shaft forging and shaft forging manufactured by same |
| CN111761021A (en) * | 2020-07-01 | 2020-10-13 | 陕西宏远航空锻造有限责任公司 | High-cylinder forging forming method |
| CN113770661A (en) * | 2021-09-30 | 2021-12-10 | 贵阳安大宇航材料工程有限公司 | Preparation process of high-cylinder thin-wall ring piece |
| CN114130933A (en) * | 2021-11-17 | 2022-03-04 | 无锡宏达重工股份有限公司 | Forging process of large medium-pressure transition flange of steam turbine |
| CN115283598A (en) * | 2022-08-25 | 2022-11-04 | 上海电气上重铸锻有限公司 | Forging device and forging method for 316LN stainless steel super-thick trapezoidal section forging |
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| CN102773398A (en) * | 2011-05-09 | 2012-11-14 | 上海重型机器厂有限公司 | Method for forging slender and thick-walled pipe fittings |
| CN103111562A (en) * | 2013-03-15 | 2013-05-22 | 中航卓越锻造（无锡）有限公司 | Manufacturing method of thick-wall high-drum annular forging |
| CN104384430A (en) * | 2014-11-25 | 2015-03-04 | 张家港海陆环形锻件有限公司 | Forging technology for thick-walled high cylindrical ring forgings |
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2018
- 2018-09-21 CN CN201811105864.4A patent/CN109127973A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102773398A (en) * | 2011-05-09 | 2012-11-14 | 上海重型机器厂有限公司 | Method for forging slender and thick-walled pipe fittings |
| CN103111562A (en) * | 2013-03-15 | 2013-05-22 | 中航卓越锻造（无锡）有限公司 | Manufacturing method of thick-wall high-drum annular forging |
| CN104384430A (en) * | 2014-11-25 | 2015-03-04 | 张家港海陆环形锻件有限公司 | Forging technology for thick-walled high cylindrical ring forgings |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110802192A (en) * | 2019-10-12 | 2020-02-18 | 中冶陕压重工设备有限公司 | Core rod for drawing cylinder and using method thereof |
| CN111154961A (en) * | 2019-12-31 | 2020-05-15 | 无锡宝露重工有限公司 | Method for manufacturing shaft forging and shaft forging manufactured by same |
| CN111761021A (en) * | 2020-07-01 | 2020-10-13 | 陕西宏远航空锻造有限责任公司 | High-cylinder forging forming method |
| CN113770661A (en) * | 2021-09-30 | 2021-12-10 | 贵阳安大宇航材料工程有限公司 | Preparation process of high-cylinder thin-wall ring piece |
| CN114130933A (en) * | 2021-11-17 | 2022-03-04 | 无锡宏达重工股份有限公司 | Forging process of large medium-pressure transition flange of steam turbine |
| CN115283598A (en) * | 2022-08-25 | 2022-11-04 | 上海电气上重铸锻有限公司 | Forging device and forging method for 316LN stainless steel super-thick trapezoidal section forging |
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Application publication date: 20190104 |