CN109261864A - A kind of Cronidur30 high nitrogen stainless steel bearing ring blank forging manufacturing process - Google Patents
A kind of Cronidur30 high nitrogen stainless steel bearing ring blank forging manufacturing process Download PDFInfo
- Publication number
- CN109261864A CN109261864A CN201811148588.XA CN201811148588A CN109261864A CN 109261864 A CN109261864 A CN 109261864A CN 201811148588 A CN201811148588 A CN 201811148588A CN 109261864 A CN109261864 A CN 109261864A
- Authority
- CN
- China
- Prior art keywords
- cronidur30
- stainless steel
- bearing ring
- high nitrogen
- nitrogen stainless
- 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.)
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Classifications
-
- 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
-
- 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
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
-
- 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
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/08—Upsetting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/04—Making machine elements ball-races or sliding bearing races
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Forging (AREA)
Abstract
A kind of Cronidur30 high nitrogen stainless steel bearing ring blank forging manufacturing process, belong to bearing parts manufacture field, the present invention solves that forging and molding can not be carried out to Cronidur30 high nitrogen stainless steel bearing ring in the prior art, to make the problem low with the service life of the bearing ring of Cronidur30 high nitrogen stainless steel material and reliability, method primary operational of the invention is that will expect that section is put into carry out preheating heating in chamber type electric resistance furnace, material after preheating heating is subjected to jumping-up with hammer, punching, flat height, material section is returned in chamber type electric resistance furnace again later and is kept the temperature, material section after heat preservation is put on machine for rolling ring, grind and expands to forging's block dimension, it is cold that mist is carried out after grinding eventually.Present invention is mainly used for the forging and moldings of Cronidur30 high nitrogen stainless steel bearing ring blank.
Description
Technical field
The present invention relates to a kind of bearing parts manufacture field, in particular to a kind of Cronidur30 high nitrogen stainless steel bearing holder (housing, cover)
Enclose blank forging manufacturing process.
Background technique
For bearing ring (outer diameter >=52mm, internal diameter >=30mm) usually by forging and molding, different bearing materials forges work
Skill is also different, in conventional bearings manufacture material, Cr4Mo4V type high temp steel, have high rigidity, high tenacity, the performances such as high temperature resistant, but
Corrosion resistance is poor；9Cr18 class stainless steel has high rigidity, and high tenacity is corrosion-resistant, but non-refractory；GCr15 class bearing steel
It is that not only non-refractory but also not corrosion-resistant, Cronidur30 high nitrogen stainless steel be high pressure nitriding iron --- chromium --- molybdenum --- steel alloy
Stainless steel, be combined with the new material of the existing high-quality performance of all kinds of bearing materials, have high rigidity, high tenacity, high temperature resistant, resist
The comprehensive performances such as corrosion, are the preferred materials of high-end bearing mnanufacture, because Cronidur30 high nitrogen stainless steel is as new material,
There are no perfect forging technology can forge to it in the prior art, so with Cronidur30 high nitrogen stainless steel work
It is substantially reduced for the bearing ring service life and reliability of material.
Summary of the invention
The present invention is to solve that forging and molding can not be carried out to Cronidur30 high nitrogen stainless steel bearing parts in the prior art,
To make the problem low with the service life of the bearing ring of Cronidur30 high nitrogen stainless steel material and reliability, Jin Erti
A kind of Cronidur30 high nitrogen stainless steel bearing ring blank forging manufacturing process out.
A kind of Cronidur30 high nitrogen stainless steel bearing ring blank forging manufacturing process of the invention, mainly takes
Technical solution is as follows:
Step 1: putting material section into chamber type electric resistance furnace effective heating area and preheat, and preheating temperature is 780 DEG C~820 DEG C,
Preheating time is 25min~70min；
Step 2: the material section after preheating is carried out to whole heat treatment in chamber type electric resistance furnace, chamber type electric resistance furnace is warming up to
1220 DEG C~1260 DEG C, soaking time is 20min~65min；
Step 3: the material section after heat eventually being taken out, is transferred on press machine, carries out jumping-up with hammering into shape on press machine, punching,
Flat height, final forging temperature are 900 DEG C~1100 DEG C；
Step 4: the material section after finish-forging is sent to chamber type electric resistance furnace effective heating area, furnace temperature remains 1130 DEG C~1170
DEG C, soaking time is 5min~30min；
Step 5: the material section after heat preservation being taken out from chamber type electric resistance furnace, and is put it on machine for rolling ring, stone roller expansion is carried out,
To forging's block dimension, grinding temperature eventually is 900 DEG C~1100 DEG C；
Step 6: it is cold that the material section after grinding eventually is subjected to mist.
Compared with the prior art, the invention has the following beneficial effects:
One, forging forming method of the invention can make this new material of Cronidur30 high nitrogen stainless steel be used for longevity
The processing and manufacturing of life and high reliability bearing ring, the service life compared to the bearing ring of traditional material at least improve
30%.
Two, hard after the forging annealing that forging forming method of the invention can be such that Cronidur30 high nitrogen stainless steel forges
Degree can achieve HB190~HB255.
Detailed description of the invention
Fig. 1 forging and forming technology curve graph.
Specific embodiment
Specific embodiment 1: embodiment is described with reference to Fig. 1, a kind of Cronidur30 described in this city embodiment
The realization process of high nitrogen stainless steel bearing ring blank forging manufacturing process are as follows:
Step 1: putting material section into chamber type electric resistance furnace effective heating area and preheat, and preheating temperature is 780 DEG C~820 DEG C,
Preheating time is 25min~70min；
Step 2: the material section after preheating is carried out to whole heat treatment in chamber type electric resistance furnace, chamber type electric resistance furnace is warming up to
1220 DEG C~1260 DEG C, soaking time is 20min~65min；
Step 3: the material section after heat eventually being taken out, is transferred on press machine, carries out jumping-up with hammering into shape on press machine, punching,
Flat height, final forging temperature are 900 DEG C~1100 DEG C；
Step 4: the material section after finish-forging is sent to chamber type electric resistance furnace effective heating area, furnace temperature remains 1130 DEG C~1170
DEG C, soaking time is 5min~30min；
Step 5: the material section after heat preservation being taken out from chamber type electric resistance furnace, and is put it on machine for rolling ring, stone roller expansion is carried out,
To forging's block dimension, grinding temperature eventually is 900 DEG C~1100 DEG C；
Step 6: it is cold that the material section after grinding eventually is subjected to mist.
Specific embodiment 2: being illustrated with reference to Fig. 1, present embodiment puts material section into box electricity described in step 3
Resistance furnace effective heating area is preheated, and guarantees that temperature is 800 DEG C, soaking time 35min, other undisclosed technologies and step with
Specific embodiment one is identical.
Such setting can guarantee that material section while reaching best pre-heat effect, saves energy to greatest extent, will not
Cause excessive thermal losses.
Specific embodiment 3: being illustrated with reference to Fig. 1, present embodiment the material section after preheating existing described in step 4
1230 DEG C, soaking time 28min are warming up in chamber type electric resistance furnace, technologies and step and specific embodiment two is not disclosed in other
It is identical.
Specific embodiment 4: being illustrated with reference to Fig. 1, present embodiment sends material ring back to box electricity described in step 6
Furnace effective heating area is hindered, furnace temperature is 1150 DEG C, soaking time 7min, and technologies and step and specific embodiment is not disclosed in other
Three is identical.
The better ductility of workpiece after can guaranteeing forging is arranged such, expands process for subsequent stone roller and prepares, in this ring
Under border, the energy being lost while ductility being made to reach preferably is minimum.
Specific embodiment 5: present embodiment is Step 1: Step 2: box resistance described in step 4 and step 5
Furnace is RX3-90-12 chamber type electric resistance furnace, other undisclosed technologies and step are identical as specific embodiment four.
It is hammered into shape specific embodiment 6: present embodiment is hammered into shape described in step 1 for 1500kg.Other undisclosed technologies and
Step is identical as specific embodiment five.
Specific embodiment 7: present embodiment machine for rolling ring described in step 1 is D51-250 machine for rolling ring.Other are not public
It is identical as specific embodiment six to open technology and step.
Specific embodiment 8: final forging temperature of the present embodiment described in step 3 is 950 DEG C.Other undisclosed skills
Art and step are identical as specific embodiment seven.
Specific embodiment 9: whole grind temperature of the present embodiment described in step 5 is 950 DEG C.Other undisclosed skills
Art and step are identical as specific embodiment eight.
Specific embodiment 10: referring to a kind of forging forming method of Cronidur30 high nitrogen stainless steel in present embodiment
The application for obtaining material section, by side described in specific embodiment one, two, three, four, five, six, seven or eight any specific embodiments
Method obtains material section and is used to process the bearing ring that bearing designation is 176116 bearings.
Embodiment one
The present embodiment provides a kind of Cronidur30 high nitrogen stainless steel bearing ring blank forging manufacturing process, specifically press
It is carried out according to following steps:
Step 1: putting material section into RX3-90-12 chamber type electric resistance furnace effective heating area and preheat, preheating temperature 800
DEG C, preheating time 40min；
Step 2: the material section after preheating is carried out to whole heat treatment in RX3-90-12 chamber type electric resistance furnace, by chamber type electric resistance furnace
1240 DEG C are warming up to, soaking time 35min；
Step 3: the material section after heat eventually being taken out, is transferred on press machine, carries out jumping-up with hammering into shape on press machine, punching,
Flat height, final forging temperature are 950 DEG C；
Step 4: being sent to RX3-90-12 chamber type electric resistance furnace effective heating area for the material section after finish-forging, and furnace temperature is 1150 DEG C,
Soaking time is 15min；
Step 5: the material section after heat preservation being taken out from RX3-90-12 chamber type electric resistance furnace, and is put it on machine for rolling ring,
Stone roller expansion is carried out, until forging's block dimension, grinding temperature eventually is 950 DEG C；
Step 6: it is cold that the material section after grinding eventually is subjected to mist.
The model 176116 of Cronidur30 high nitrogen stainless steel bearing ring blank manufactured in the present embodiment, model
176116 bearing ring blank forging does not crack, and the hardness forged after completing annealing reaches HB220, can satisfy
The requirement of subsequent mechanical processing, while the service life of the forging of model 176116 and reliability also greatly improve.
The present invention is disclosed as above with preferable case study on implementation, and however, it is not intended to limit the invention, any to be familiar with this profession
Technical staff, without departing from the scope of the present invention, when the structure and technology contents that can use the disclosure above are done
A little change or it is modified to the equivalence enforcement case of equivalent variations out, but it is all without departing from technical solution of the present invention
Hold, any simple modification, equivalent change and modification done according to the technical essence of the invention to the above case study on implementation still belong to
Technical solution of the present invention range.
Claims (10)
1. a kind of Cronidur30 high nitrogen stainless steel bearing ring blank forging manufacturing process, it is characterised in that: the method
Realization process are as follows:
Step 1: putting material section into chamber type electric resistance furnace effective heating area and preheat, and preheating temperature is 780 DEG C~820 DEG C, preheating
Time is 25min~70min；
Step 2: the material section after preheating is carried out to whole heat treatment in chamber type electric resistance furnace, chamber type electric resistance furnace is warming up to 1220 DEG C
~1260 DEG C, soaking time is 20min~65min；
Step 3: the material section after heat eventually being taken out, is transferred on press machine, carries out jumping-up with hammer on press machine, and height is put down in punching
Degree, final forging temperature are 900 DEG C~1100 DEG C；
Step 4: being sent to chamber type electric resistance furnace effective heating area for the material section after finish-forging, and furnace temperature remains 1130 DEG C~1170 DEG C, protects
The warm time is 5min~30min；
Step 5: the material section after heat preservation being taken out from chamber type electric resistance furnace, and is put it on machine for rolling ring, stone roller expansion is carried out, until forging
Part size, grinding temperature eventually is 900 DEG C~1100 DEG C；
Step 6: it is cold that the material section after grinding eventually is subjected to mist.
2. a kind of processing side of Cronidur30 high nitrogen stainless steel bearing ring forging and molding according to claim 1
Method, it is characterised in that: it is described in step 1 to expect that section is put chamber type electric resistance furnace effective heating area into and preheated, guarantee that temperature is
800 DEG C, soaking time 35min.
3. a kind of processing side of Cronidur30 high nitrogen stainless steel bearing ring forging and molding according to claim 2
Method, it is characterised in that: the material section after preheating is heated up to 1230 DEG C in chamber type electric resistance furnace described in step 2, soaking time
For 28min.
4. a kind of processing of Cronidur30 high nitrogen stainless steel bearing ring blank forging forming according to claim 3
Method, it is characterised in that: send material section back to chamber type electric resistance furnace effective heating area described in step 4, furnace temperature guarantees to be 1150
DEG C, soaking time 7min.
5. a kind of processing of Cronidur30 high nitrogen stainless steel bearing ring blank forging forming according to claim 4
Method, it is characterised in that: Step 1: Step 2: chamber type electric resistance furnace described in step 4 and step 5 is that RX3-90-12 is box
Resistance furnace.
6. a kind of processing of Cronidur30 high nitrogen stainless steel bearing ring blank forging forming according to claim 5
Method, it is characterised in that: hammer described in step 3 is that 1500kg is hammered into shape.
7. a kind of processing of Cronidur30 high nitrogen stainless steel bearing ring blank forging forming according to claim 7
Method, it is characterised in that: machine for rolling ring described in step 5 is D51-250 machine for rolling ring.
8. a kind of processing of Cronidur30 high nitrogen stainless steel bearing ring blank forging forming according to claim 8
Method, it is characterised in that: final forging temperature described in step 3 is 950 DEG C.
9. a kind of processing of Cronidur30 high nitrogen stainless steel bearing ring blank forging forming according to claim 8
Method, it is characterised in that: it is 950 DEG C that end described in step 5, which grinds temperature,.
10. a kind of Cronidur30 high nitrogen stainless steel bearing ring blank forging manufacturing process obtains the application of material section, feature
It is, claim 1,2,3,4,5,6,7 or 8 any claim the methods is obtained and expect that section is used to process bearing designation and is
The bearing ring of 176116 bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811148588.XA CN109261864A (en) | 2018-09-29 | 2018-09-29 | A kind of Cronidur30 high nitrogen stainless steel bearing ring blank forging manufacturing process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811148588.XA CN109261864A (en) | 2018-09-29 | 2018-09-29 | A kind of Cronidur30 high nitrogen stainless steel bearing ring blank forging manufacturing process |
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| CN109261864A true CN109261864A (en) | 2019-01-25 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110102696A (en) * | 2019-04-30 | 2019-08-09 | 大连海泰轴承制造有限公司 | A kind of bearing ring forging process temperature control method |
| CN110871234A (en) * | 2019-11-22 | 2020-03-10 | 宁波江丰电子材料股份有限公司 | Machining and forming method of annular back plate |
| CN111745104A (en) * | 2020-07-02 | 2020-10-09 | 无锡航亚科技股份有限公司 | Forging method for improving grain size of high-nitrogen stainless steel |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110102696A (en) * | 2019-04-30 | 2019-08-09 | 大连海泰轴承制造有限公司 | A kind of bearing ring forging process temperature control method |
| CN110871234A (en) * | 2019-11-22 | 2020-03-10 | 宁波江丰电子材料股份有限公司 | Machining and forming method of annular back plate |
| CN111745104A (en) * | 2020-07-02 | 2020-10-09 | 无锡航亚科技股份有限公司 | Forging method for improving grain size of high-nitrogen stainless steel |
| CN111745104B (en) * | 2020-07-02 | 2022-04-29 | 无锡航亚科技股份有限公司 | Forging method for improving grain size of high-nitrogen stainless steel |
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Application publication date: 20190125 |