CN105499933B - Manufacturing process using F92 steel as the ring forging of material - Google Patents
Manufacturing process using F92 steel as the ring forging of material Download PDFInfo
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- CN105499933B CN105499933B CN201610024969.1A CN201610024969A CN105499933B CN 105499933 B CN105499933 B CN 105499933B CN 201610024969 A CN201610024969 A CN 201610024969A CN 105499933 B CN105499933 B CN 105499933B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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Abstract
The invention discloses the manufacturing process using F92 steel as the ring forging of material, its processing step are as follows：Heating → rolling ring → conditioning treatment → rough turn flaw detection → heat treatment before heating → upset → punching → reaming → throwing forging → rolling ring before steel ingot cogging → blanking → forging.The above-mentioned manufacturing process using F92 steel as the ring forging of material can refine the crystal grain in ring forging, the grain size for making the crystal grain in ring forging be refined to 2 ~ 3 grades by original macroscopical macroscopic coarse grain, so as to greatly improve the mechanical property of ring forging, increase the service life of ring forging.
Description
Technical field
The present invention relates to the manufacturing process using F92 steel as the ring forging of material.
Background technology
F92 steel is a kind of new ferritic heat-resistant steel, be with the addition of on the basis of F91 steel a certain amount of tungsten and
Boron, is strengthened by W-Mo compound solid solutions and B intercrystalline strengthening acts on, and makes its high-temerature creep limit etc. obtain further carrying
Height, material usage can not only be saved using F92 steel makings ring forging, so as to reduce manufacturing cost, and because such a material
There are higher thermal conductivity factor, the relatively low coefficient of expansion, so that the heat fatigue loss of ring forging can substantially reduce.But due to
Manufacturing process it is unreasonable, cause using F92 steel makings ring forging crystal grain it is excessively thick, can thus substantially reduce ring forging
Mechanical property, so as to reduce the service life of ring forging.
The content of the invention
The technical problems to be solved by the invention are：A kind of can make using F92 steel as in the ring forging of material will be provided
The manufacturing process of crystal grain refinement.
In order to solve the above problems, the technical solution adopted by the present invention is：Manufacture using F92 steel as the ring forging of material
Technique, its processing step are as follows：Heating → upset → punching → reaming → throwing forging → rolling ring before steel ingot cogging → blanking → forging
Preceding heating → rolling ring → conditioning treatment → rough turn flaw detection → heat treatment, its feature make：
（1）F92 steel using grade of steel as 10Cr9MoW2VNbN is raw material, and its chemical composition requires as follows： C：0.07
~0.13%, Si：≤0.50%、Mn ：0.30~0.60%, P：≤0.020%、S： ≤0.010 %、Cr：8.5~9.5%, Mo：
0.30~0.60%, Ni：≤0.40%、Cu：≤0.2%、V：0.15~0.25%, B：0.001~0.006%, W：1.5~2.0%,
Al：≤0.040%、Ti：≤0.02% 、Sn：≤0.02%、 Pb：≤0.005%、N：≤0.01%、H：≤1.8ppm、O:≤
20ppm；
（2）Heating process step is as follows before rolling ring：The steel billet thrown after forging first is preheated to 100~200 DEG C before shove charge, then
Steel billet is lain against in heating furnace, and a circle low-temperature alloy steel is with the surrounding of steel billet, in-furnace temperature during billet-charging≤
400 DEG C, 2~3h is incubated after the completion of shove charge；Then the burner of heating furnace is heated against low-temperature alloy steel so that in-furnace temperature
2~3h is incubated after being warming up to 1050 DEG C ± 20 DEG C with≤100 DEG C/h speed, steel billet is then taken out and carries out rolling ring；
（3）Conditioning treatment process is as follows：Ring forging obtained by rolling ring is positioned in heating furnace first, ring forging dress
In-furnace temperature is 25~50 DEG C of room temperature during stove, and heating furnace is warming up to 870 DEG C ± 10 DEG C with≤100 DEG C/h speed after the completion of shove charge
And 1.5h+Xh is at least incubated, smaller in the wall thickness and height of X=selection ring forging（Unit is millimeter）× 3.0 ÷ 60, then
After being furnace-cooled to 500 DEG C with≤50 DEG C/h speed, opening fire door makes ring forging be air-cooled to 25~50 DEG C of room temperature；
（4）Heat treatment step step is as follows：1. first time quenching Step is as follows：Ring qualified after rough turn flaw detection is forged first
Part is positioned in heating furnace, and in-furnace temperature is 25~50 DEG C of room temperature during ring forging shove charge, and heating furnace is with≤100 after the completion of shove charge
DEG C/h speed is warming up to 900 DEG C ± 10 DEG C and is at least incubated 1.5h+Yh, smaller in the wall thickness and height of Y=selection ring forging
（Unit is millimeter）× 3.0 ÷ 60, then ring forging dielectric fluid of coming out of the stove be cooled to less than 100 DEG C, then ring forging is air-cooled to
25~50 DEG C of room temperature；2. second of quenching Step is as follows：Ring forging after first time is quenched first is positioned in heating furnace, ring
In-furnace temperature is 25~50 DEG C of room temperature during forging shove charge, and heating furnace is warming up to≤100 DEG C/h speed after the completion of shove charge（1010
~1060）DEG C and be at least incubated 1.5h+Zh, smaller in the wall thickness and height of Z=selection ring forging（Unit is millimeter）×3.0
÷ 60, then ring forging dielectric fluid of coming out of the stove be cooled to less than 100 DEG C, ring forging is then air-cooled to 25~50 DEG C of room temperature；3. return
Fiery step is as follows：Ring forging after second is quenched first is positioned in heating furnace, and in-furnace temperature is room during ring forging shove charge
25~50 DEG C of temperature, heating furnace is warming up to 740 DEG C ± 10 DEG C with≤80 DEG C/h speed and is at least incubated 2.0h+ after the completion of shove charge
Smaller in the wall thickness and height of Hh, H=selection ring forging（Unit is millimeter）× 4.5 ÷ 60, then ring forging come out of the stove dielectric fluid
Less than 250 DEG C are cooled to, ring forging is then air-cooled to 25~50 DEG C of room temperature.
Further, the foregoing manufacturing process using F92 steel as the ring forging of material, wherein：Dielectric fluid is by water solubility
Quenching liquid and water composition, wherein water-soluble quenching liquid accounts for the 10%~15% of dielectric fluid weight.
Further, the foregoing manufacturing process using F92 steel as the ring forging of material, wherein：Dielectric fluid by 10%~
15% Houghton water-soluble quenching liquid AQ251C and 85%~90% water mixes.
Further, the foregoing manufacturing process using F92 steel as the ring forging of material, wherein：Low-temperature alloy steel is
42CrMo steel or S355 steel.
Further, the foregoing manufacturing process using F92 steel as the ring forging of material, wherein：The heater before rolling ring
In sequence, the gap between low-temperature alloy steel and steel billet is 120~170mm.
Further, the foregoing manufacturing process using F92 steel as the ring forging of material, wherein：The heater before rolling ring
In sequence, the gap between low-temperature alloy steel and steel billet is 150mm.
Advantages of the present invention is：Manufacturing process of the present invention using F92 steel as the ring forging of material can refine ring
Crystal grain in forging, so as to greatly improve the mechanical property of ring forging, increase the service life of ring forging.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention using F92 steel as the ring forging of material.
Embodiment
With reference to specific embodiment, the present invention is described in further detail.
Manufacturing process using F92 steel as the ring forging of material, its processing step are as follows：Steel ingot cogging → blanking → forging
Before preceding heating → upset → punching → reaming → throwing forging → rolling ring at heating → rolling ring → conditioning treatment → rough turn flaw detection → heat
Reason,
（1）F92 steel using grade of steel as 10Cr9MoW2VNbN is raw material, and its chemical composition requires as follows： C：0.07
~0.13%, Si：≤0.50%、Mn ：0.30~0.60%, P：≤0.020%、S： ≤0.010 %、Cr：8.5~9.5%, Mo：
0.30~0.60%, Ni：≤0.40%、Cu：≤0.2%、V：0.15~0.25%, B：0.001~0.006%, W：1.5~2.0%,
Al：≤0.040%、Ti：≤0.02% 、Sn：≤0.02%、 Pb：≤0.005%、N：≤0.01%、H：≤1.8ppm、O:≤
20ppm；
（2）Steel ingot cogging process is as follows：Whole branch steel ingot is heated first, in-furnace temperature during steel ingot shove charge≤
400 DEG C, 2~3h is incubated after the completion of shove charge, 2~3h is incubated after being then warming up to 850 DEG C ± 20 DEG C with≤100 DEG C/h speed,
Then proceeding to heating makes in-furnace temperature be incubated 4~5h after being warming up to 1180 DEG C ± 20 DEG C with≤100 DEG C/h speed, then comes out of the stove
Carry out that chamfered edge is round as a ball to steel ingot, the drafts of chopping block is 50~80mm during chamfered edge；The purpose of cogging is to close dredging for steel ingot to forge
Pine, shrinkage cavity and micro-crack, it is broken when preventing steel material from forging；
（3）Blanking is carried out by raw material of the good steel ingot of cogging；
（4）Heating process step is as follows before forging：Steel billet obtained by blanking is first preheated to 100~200 DEG C before shove charge, then
Steel billet is lain against in heating furnace, and a circle low-temperature alloy steel is with the surrounding of steel billet, in-furnace temperature during billet-charging≤
400 DEG C, 2~3h is incubated after the completion of shove charge；Then the burner of heating furnace is heated against low-temperature alloy steel so that in-furnace temperature
2~3h is incubated after being warming up to 850 DEG C ± 20 DEG C with≤100 DEG C/h speed, then proceeding to heating makes in-furnace temperature with≤100
DEG C/h speed is incubated 4~5h after being warming up to 1180 DEG C ± 20 DEG C, finally take out steel billet and forged；
（5）By the upset size to process stipulation of steel billet, it is upset during steel billet must be cydariform, must not occur turned-down edge,
The defects of groove；
（6）Drift is selected according to technological requirement, drift, which must be repaired, to be removed fillet and prevent punching bark pocket, must school during punching
Obvious step, must not occur in quasi- centering, punching bias need≤5mm on the inwall of steel billet after punching, the depth of step must not surpass
5mm is crossed, if occurring just continuing to forge after noticeable steps must first go through throwing forging or machining elimination defect；
（7）According to technological requirement reaming to required size on ring rolls；
（8）Each volume under pressure is no more than 50mm when throwing forging, to ensure that steel billet does not ftracture at the end of throwing forging, and steel billet
Internal diameter need to expand to the position that 90~110mm is differed with required product internal diameter；
（9）Heating process step is as follows before rolling ring：The steel billet thrown after forging first is preheated to 100~200 DEG C before shove charge, then
Steel billet is lain against in heating furnace, and a circle low-temperature alloy steel is with the surrounding of steel billet, in-furnace temperature during billet-charging≤
400 DEG C, 2~3h is incubated after the completion of shove charge；Then the burner of heating furnace is heated against low-temperature alloy steel so that in-furnace temperature
2~3h is incubated after being warming up to 1050 DEG C ± 20 DEG C with≤100 DEG C/h speed, steel billet is then taken out and carries out rolling ring；Rolling ring temperature
Can not be too high, it is too high that crystal grain can be made to grow up, merge, so as to cause coarse-grain and mixed crystal, so rolling ring temperature control is on 1050 DEG C of left sides
It is right；In the present embodiment, low-temperature alloy steel is 42CrMo steel, and 42CrMo steel is common steel, and its heat conductivility is excellent；It is low
Gap between temperature alloy steel and steel billet is 120~170mm, preferably 150mm, and it is grabbing in order to facilitate steel billet to set gap
Take, and gap is unsuitable excessive, and conference is crossed in gap reduces heating effect of the low-temperature alloy steel to steel billet；
（10）Ring forging as shown in Figure 1 is made after rolling ring；
（11）Conditioning treatment process is as follows：Ring forging obtained by rolling ring is positioned in heating furnace first, ring forging
In-furnace temperature is 25~50 DEG C of room temperature during shove charge, and heating furnace is warming up to 870 DEG C ± 10 with≤100 DEG C/h speed after the completion of shove charge
DEG C and be at least incubated 1.5h+Xh, smaller in the wall thickness and height of X=selection ring forging（Unit is millimeter）× 3.0 ÷ 60, i.e.,：
X=selection 1/2*（D-d）With smaller in h（Unit is millimeter）× 3.0 ÷ 60, are then furnace-cooled to 500 with≤50 DEG C/h speed
After DEG C, opening fire door makes ring forging be air-cooled to 25~50 DEG C of room temperature；
（12）In rough turn flaw detection process：Non-destructive testing standard be must not have inside ring forging diameter more than 2mm independent defect and
Diameter is more than 1.6mm close defect；
（13）Heat treatment step step is as follows：1. first time quenching Step is as follows：First by ring qualified after rough turn flaw detection
Forging is positioned in heating furnace, and in-furnace temperature is 25~50 DEG C of room temperature during ring forging shove charge, and heating furnace is with≤100 after the completion of shove charge
DEG C/h speed is warming up to 900 DEG C ± 10 DEG C and is at least incubated 1.5h+Yh, smaller in the wall thickness and height of Y=selection ring forging
（Unit is millimeter）× 3.0 ÷ 60, i.e.,：Y=selection 1/2*（D-d）With smaller in h（Unit is millimeter）× 3.0 ÷ 60, then
Ring forging dielectric fluid of coming out of the stove is cooled to less than 100 DEG C, and ring forging then is air-cooled into 25~50 DEG C of room temperature；2. second of quenching step
It is rapid as follows：Ring forging after first time is quenched first is positioned in heating furnace, and in-furnace temperature is room temperature 25 during ring forging shove charge
~50 DEG C, heating furnace is warming up to≤100 DEG C/h speed after the completion of shove charge（1010~1060）DEG C and be at least incubated 1.5h+
Smaller in the wall thickness and height of Zh, Z=selection ring forging（Unit is millimeter）× 3.0 ÷ 60, i.e.,：Z=selection 1/2*（D-d）With
Smaller in h（Unit is millimeter）× 3.0 ÷ 60, then ring forging dielectric fluid of coming out of the stove be cooled to less than 100 DEG C, then ring is forged
Part is air-cooled to 25~50 DEG C of room temperature；3. tempering step is as follows：Ring forging after second is quenched first is positioned in heating furnace,
In-furnace temperature is 25~50 DEG C of room temperature during ring forging shove charge, and heating furnace is warming up to 740 with≤80 DEG C/h speed after the completion of shove charge
DEG C ± 10 DEG C and 2.0h+Hh is at least incubated, smaller in the wall thickness and height of H=selection ring forging（Unit is millimeter）×4.5÷
60, i.e.,：H=selection 1/2*（D-d）With smaller in h（Unit is millimeter）× 4.5 ÷ 60, then ring forging dielectric fluid of coming out of the stove is cold
But to less than 250 DEG C, ring forging is then air-cooled to 25~50 DEG C of room temperature.In the present embodiment, dielectric fluid is by 10%~15%
Houghton water-soluble quenching liquid AQ251C and 85%~90% water mixes.Water-soluble quenching liquid is light yellow clear liquid,
It is made added with multiple additives such as antirust, anti-corrosion, wetting, sterilizations, has inverse dissolubility to water.By adjusting the dense of water-soluble quenching liquid
Degree, can make the cooling capacity of dielectric fluid prevent forging from causing to ftracture because cooling velocity is too fast between water oil.
The present invention has the beneficial effect that：Manufacturing process of the present invention using F92 steel as the ring forging of material can refine
Crystal grain in ring forging, the grain size for making the crystal grain in ring forging be refined to 2 ~ 3 grades by original macroscopical macroscopic coarse grain, so as to
The mechanical property of ring forging is greatly improved, increases the service life of ring forging.
Claims (6)
1. using F92 steel as the manufacturing process of the ring forging of material, its processing step is as follows：Before steel ingot cogging → blanking → forging
Heating → rolling ring → conditioning treatment → rough turn flaw detection → heat treatment before heating → upset → punching → reaming → throwing forging → rolling ring,
It is characterized in that：
（1）F92 steel using grade of steel as 10Cr9MoW2VNbN is raw material, and its chemical composition requires as follows： C：0.07~
0.13%、Si：≤0.50%、Mn ：0.30~0.60%, P：≤0.020%、S： ≤0.010 %、Cr：8.5~9.5%, Mo：
0.30~0.60%, Ni：≤0.40%、Cu：≤0.2%、V：0.15~0.25%, B：0.001~0.006%, W：1.5~2.0%,
Al：≤0.040%、Ti：≤0.02% 、Sn：≤0.02%、 Pb：≤0.005%、N：≤0.01%、H：≤1.8ppm、O:≤
20ppm；
（2）Heating process step is as follows before rolling ring：The steel billet thrown after forging first is preheated to 100~200 DEG C before shove charge, then steel
Base is lain against in heating furnace, and is with a circle low-temperature alloy steel in the surrounding of steel billet, in-furnace temperature≤400 during billet-charging
DEG C, 2~3h is incubated after the completion of shove charge；Then the burner of heating furnace is heated against low-temperature alloy steel so that in-furnace temperature with
≤ 100 DEG C/h speed is incubated 2~3h after being warming up to 1050 DEG C ± 20 DEG C, then takes out steel billet and carries out rolling ring；
（3）Conditioning treatment process is as follows：Ring forging obtained by rolling ring is positioned in heating furnace first, during ring forging shove charge
In-furnace temperature is 25~50 DEG C of room temperature, and heating furnace is warming up to 870 DEG C ± 10 DEG C and extremely with≤100 DEG C/h speed after the completion of shove charge
It is incubated 1.5h+Xh less, smaller in the wall thickness and height of X=selection ring forging（Unit is millimeter）× 3.0 ÷ 60, then with≤
After 50 DEG C/h speed is furnace-cooled to 500 DEG C, opening fire door makes ring forging be air-cooled to 25~50 DEG C of room temperature；
（4）Heat treatment step step is as follows：1. first time quenching Step is as follows：Ring forging qualified after rough turn flaw detection is put first
It is placed in heating furnace, in-furnace temperature is 25~50 DEG C of room temperature during ring forging shove charge, and heating furnace is with≤100 DEG C/h's after the completion of shove charge
Speed is warming up to 900 DEG C ± 10 DEG C and is at least incubated 1.5h+Yh, smaller in the wall thickness and height of Y=selection ring forging（Unit
For millimeter）× 3.0 ÷ 60, then ring forging dielectric fluid of coming out of the stove be cooled to less than 100 DEG C, ring forging is then air-cooled to room temperature 25
~50 DEG C；2. second of quenching Step is as follows：Ring forging after first time is quenched first is positioned in heating furnace, ring forging dress
In-furnace temperature is 25~50 DEG C of room temperature during stove, and heating furnace is warming up to≤100 DEG C/h speed after the completion of shove charge（1010~
1060）DEG C and be at least incubated 1.5h+Zh, smaller in the wall thickness and height of Z=selection ring forging（Unit is millimeter）×3.0÷
60, then ring forging dielectric fluid of coming out of the stove be cooled to less than 100 DEG C, ring forging is then air-cooled to 25~50 DEG C of room temperature；3. it is tempered
Step is as follows：Ring forging after second is quenched first is positioned in heating furnace, and in-furnace temperature is room temperature during ring forging shove charge
25~50 DEG C, heating furnace is warming up to 740 DEG C ± 10 DEG C with≤80 DEG C/h speed and is at least incubated 2.0h+Hh, H after the completion of shove charge
Smaller in the wall thickness and height of=selection ring forging（Unit is millimeter）× 4.5 ÷ 60, then ring forging come out of the stove dielectric fluid cooling
To less than 250 DEG C, ring forging is then air-cooled to 25~50 DEG C of room temperature.
2. the manufacturing process according to claim 1 using F92 steel as the ring forging of material, it is characterised in that：Dielectric fluid
It is made up of water-soluble quenching liquid and water, wherein water-soluble quenching liquid accounts for the 10%~15% of dielectric fluid weight.
3. the manufacturing process according to claim 2 using F92 steel as the ring forging of material, it is characterised in that：Dielectric fluid
Mixed by 10%~15% Houghton water-soluble quenching liquid AQ251C and 85%~90% water.
4. the manufacturing process using F92 steel as the ring forging of material according to claim 1 or 2 or 3, it is characterised in that：
Low-temperature alloy steel is 42CrMo steel or S355 steel.
5. the manufacturing process using F92 steel as the ring forging of material according to claim 1 or 2 or 3, it is characterised in that：
Before rolling ring in heating process, the gap between low-temperature alloy steel and steel billet is 120~170mm.
6. the manufacturing process according to claim 5 using F92 steel as the ring forging of material, it is characterised in that：In rolling ring
In preceding heating process, the gap between low-temperature alloy steel and steel billet is 150mm.
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| CN106222544B (en) * | 2016-08-30 | 2018-06-26 | 张家港中环海陆特锻股份有限公司 | Annular forging piece and its heat treatment method |
| CN106521346A (en) * | 2016-08-31 | 2017-03-22 | 张家港中环海陆特锻股份有限公司 | Alloy used for 42CrMo4 annular forging and manufacturing method of annular forging |
| CN106381455B (en) * | 2016-08-31 | 2018-05-22 | 张家港中环海陆特锻股份有限公司 | The manufacturing method of alloy, annular forging piece for bearing block |
| CN107747032B (en) * | 2017-09-30 | 2019-05-03 | 张家港中环海陆特锻股份有限公司 | Aviation high-toughness long-life large rotor forged shaft manufacturing process |
| CN109732286A (en) * | 2019-01-23 | 2019-05-10 | 温州市华海密封件有限公司 | The slim sealing ring pad processing method of heavy caliber monoblock type |
| CN109967713A (en) * | 2019-04-08 | 2019-07-05 | 四川鑫鼎新材料有限公司 | A kind of nuclear screening multiple tube and preparation method thereof |
| CN112878873A (en) * | 2021-01-22 | 2021-06-01 | 四川远方高新装备零部件股份有限公司 | Civil air defense engineering safety protection door with yaw structure and manufacturing process thereof |
| CN113245485A (en) * | 2021-06-24 | 2021-08-13 | 机械科学研究总院江苏分院有限公司 | Metal ring rolling process |
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| GB767342A (en) * | 1954-09-15 | 1957-01-30 | Thompson Prod Inc | Improvements in or relating to piston ring making machine and process |
| IT999687B (en) * | 1972-11-09 | 1976-03-10 | Skf Ind Trading & Dev | GROUP OF BEARING FOR ROTATING PARTS EQUIPPED WITH BRAKE |
| JP3851094B2 (en) * | 2001-02-06 | 2006-11-29 | 株式会社ジェイテクト | Toroidal-type continuously variable transmission and processing method of roller used therefor |
| CN102773673A (en) * | 2012-08-11 | 2012-11-14 | 贵州航天新力铸锻有限责任公司 | Ring rolling forming process of square-exterior circular-interior forge piece |
| CN104139280B (en) * | 2014-06-30 | 2016-05-11 | 张家港中环海陆特锻股份有限公司 | The manufacturing process of hub for vehicle wheel |
| CN105171358B (en) * | 2015-10-20 | 2018-01-19 | 张家港中环海陆特锻股份有限公司 | The processing technology of power shovel lower roller |
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