CN110205555A - A kind of Producing Graphite Steel Rollers being exclusively used in machine components gear rolling - Google Patents
A kind of Producing Graphite Steel Rollers being exclusively used in machine components gear rolling Download PDFInfo
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- CN110205555A CN110205555A CN201910607629.5A CN201910607629A CN110205555A CN 110205555 A CN110205555 A CN 110205555A CN 201910607629 A CN201910607629 A CN 201910607629A CN 110205555 A CN110205555 A CN 110205555A
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- Prior art keywords
- roll
- temperature
- machine components
- exclusively used
- steel
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Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 57
- 239000010959 steel Substances 0.000 title claims abstract description 57
- 238000005096 rolling process Methods 0.000 title claims abstract description 34
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 239000010439 graphite Substances 0.000 title claims abstract description 20
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 claims abstract description 16
- 238000005516 engineering process Methods 0.000 claims abstract description 13
- 239000002893 slag Substances 0.000 claims description 21
- 229910045601 alloy Inorganic materials 0.000 claims description 12
- 239000000956 alloy Substances 0.000 claims description 12
- 229910052804 chromium Inorganic materials 0.000 claims description 12
- 239000011651 chromium Substances 0.000 claims description 12
- 230000008018 melting Effects 0.000 claims description 12
- 238000002844 melting Methods 0.000 claims description 12
- 229910052758 niobium Inorganic materials 0.000 claims description 12
- 239000010955 niobium Substances 0.000 claims description 12
- 229910052720 vanadium Inorganic materials 0.000 claims description 12
- 239000010436 fluorite Substances 0.000 claims description 9
- 238000000465 moulding Methods 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 9
- 239000004576 sand Substances 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 8
- 229910004709 CaSi Inorganic materials 0.000 claims description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 238000005266 casting Methods 0.000 claims description 6
- 238000011534 incubation Methods 0.000 claims description 6
- 230000006698 induction Effects 0.000 claims description 6
- 229910052748 manganese Inorganic materials 0.000 claims description 6
- 229910052750 molybdenum Inorganic materials 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 6
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 6
- 150000002910 rare earth metals Chemical class 0.000 claims description 6
- 238000010079 rubber tapping Methods 0.000 claims description 6
- 238000007711 solidification Methods 0.000 claims description 6
- 230000008023 solidification Effects 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- 238000005496 tempering Methods 0.000 claims description 6
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 4
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 claims description 3
- 229910001563 bainite Inorganic materials 0.000 claims description 3
- 229910000734 martensite Inorganic materials 0.000 claims description 3
- 230000008520 organization Effects 0.000 claims description 3
- 238000010791 quenching Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 238000000034 method Methods 0.000 description 5
- 238000000746 purification Methods 0.000 description 5
- 238000005457 optimization Methods 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000013019 agitation Methods 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/38—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for roll bodies
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/56—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.7% by weight of carbon
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/002—Bainite
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/006—Graphite
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/008—Martensite
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Geometry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The present invention relates to the technical fields of roll, especially a kind of Producing Graphite Steel Rollers for being exclusively used in machine components gear rolling, it is along the circumferential direction uniformly arranged on first roll outer wall and second roll outer wall and several rolls tooth with first roll disposed in parallel and second roll；The first roll and second roll rotates in same direction operation and carries out rolling tooth to round piece.This is exclusively used in the Producing Graphite Steel Rollers of machine components gear rolling, and structure is simple, and production and processing technology is reasonable, is remarkably improved the service life of roll, improves the precision and efficiency of production and processing, convenient for being widely popularized and using.
Description
Technical field
The present invention relates to the technical field of roll, especially a kind of graphitic steel for being exclusively used in machine components gear rolling rolls
Roller.
Background technique
Since machine components rolling is different from traditional metallurgy rolling technique, and there is load sharp fall, production effect
Rate significantly improves, production environment significantly improves, saves many advantages, such as material is significant, and environmentally protective, and part rolls kind
It is various, such as gear rolling, screw thread rolling, the rolling of contract transverse rolling, spiral bit, bearing steel ball rolling, with the hair of rolling technique
Exhibition innovation, more and more part rollings enterprise gives birth to therefrom, and parts product wide market.Because part rolling does not belong to
In special rolling, roll used also has certain characteristic.Roll currently used in the market is not able to satisfy demand.
Summary of the invention
The technical problem to be solved by the present invention is being provided a kind of special to solve the problems, such as above-mentioned background technique
For the Producing Graphite Steel Rollers of machine components gear rolling, structure is simple, and production and processing technology is reasonable, is remarkably improved making for roll
With the service life, the precision and efficiency of production and processing are improved, convenient for being widely popularized and using.
The technical solution adopted by the present invention to solve the technical problems is: a kind of stone being exclusively used in machine components gear rolling
Black steel roll, with first roll disposed in parallel and second roll, on the first roll outer wall and second roll outer wall
It is along the circumferential direction uniformly arranged and several rolls tooth；The first roll and second roll rotates in same direction operation and carries out to round piece
Roll tooth.
It further explains, in above-mentioned technical proposal, the first roll surface and second roll surface hardness are
65~70HSD；The first roll tensile strength and second roll tensile strength >=580MPa.
It further explains, in above-mentioned technical proposal, the first roll and second roll metallographic elementary organization are as follows: ball
Shape graphite+acinous alloy-type carbide+tempered sorbite+bainite+martensite.
A kind of production and processing technology for the Producing Graphite Steel Rollers being exclusively used in machine components gear rolling, include the following steps: S1,
Distribute chemical component rationally: C:1.80~2.20%, Si:0.80~1.60%, Mn:0.80~1.00%, Cr:1.00~2.00%,
Ni:1.20~2.20%, Mo:0.60~0.80%, V:0.20~0.40%, Nb:0.20~0.40%, P≤0.030%, S≤
0.025%；S2, melting spheroidising and casting: 1), in medium-frequency induction furnace melting molten steel, selection slag former progress slag making, steel
To 1520 DEG C~1550 DEG C, dross is white to skim temperature, and it is concise to LF essence furnace to tap, when steel temperature is to 1580 DEG C~1600 DEG C,
Chromium, vanadium, niobium high-melting-point alloy is added, the purification of 2~4kg/t yttrium-base heavy rare earth alterant is added when steel temperature is to 1620 DEG C~1630 DEG C
Molten steel, then plus 0.030% aluminium deoxidation, spheroidising of then tapping；2), nodulizer CaSi alloy addition 0.50~0.80%/
t；Be disposed and bred again with 0.45~0.60%BaCa inovulant, incubation period with electromagnetic mixer stir 30~50s, calmness 8~
It is poured after 10min；3) it is slightly vibrated when, being poured with electromagnetic vibrator, improves consistency when solidification of molten steel, refine micro- group
It knits, eliminates area, body of roll tissue looseness；S3, roll heat treatment: roll uses hot Case opening operation, and roller temperature is hot to 550 DEG C~650 DEG C
Shove charge of unpacking is heat-treated；1) it, heats up 10 DEG C per hour, until keeping the temperature 6 hours at 660 DEG C；2) it, heats up 12 DEG C per hour, until 880 DEG C
Heat preservation 4 hours；3), roller temperature rises to Acm+30~50 DEG C, keeps the temperature 12 hours, then hangs out spray and quenches processing；4), roller temperature is to 480 DEG C
~520 DEG C into furnace tempering；S4, after roll is restored to room temperature, carry out surface finish work handle out finished product.
It further explains, it is moulding fresh sand 50~60%, rubble that slag former, which is selected, in above-mentioned technical proposal, in the S2
Grey 10~50%, Fluorspar Powder 5~20%.
It further explains, it is moulding fresh sand 60%, rubble ash that slag former, which is selected, in above-mentioned technical proposal, in the S2
30%, Fluorspar Powder 10%.
The beneficial effects of the present invention are: a kind of graphitic steel for being exclusively used in machine components gear rolling proposed by the present invention rolls
Roller, structure is simple, and production and processing technology is reasonable, is remarkably improved the service life of roll, improves the precision and effect of production and processing
Rate, convenient for being widely popularized and using.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The some embodiments recorded in application, for those of ordinary skill in the art, without creative efforts,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is structural schematic diagram of the invention.
Label in attached drawing are as follows: 1, first roll, 2, second roll, 3, roll tooth, 4, round piece.
Specific embodiment
In order to which the technical problems, technical solutions and beneficial effects solved by the present invention is more clearly understood, below in conjunction with
Accompanying drawings and embodiments, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
See that Fig. 1 is a kind of Producing Graphite Steel Rollers for being exclusively used in machine components gear rolling, there is first roll 1 disposed in parallel
With second roll 2, along the circumferential direction it is uniformly arranged on 1 outer wall of first roll and 2 outer wall of second roll and several rolls tooth 3；First rolls
Roller 1 and second roll 2 rotate in same direction operation and carry out rolling tooth to round piece 4.
Wherein, 1 surface of first roll and 2 surface hardness of second roll are 65~70HSD；1 tensile strength of first roll
With 2 tensile strength of second roll >=580MPa.2 metallographic elementary organization of first roll 1 and second roll are as follows: globular graphite+thin
Granular alloy-type carbide+tempered sorbite+bainite+martensite.
A kind of production and processing technology for the Producing Graphite Steel Rollers being exclusively used in machine components gear rolling, include the following steps: S1,
Distribute chemical component rationally: C:1.80~2.20%, Si:0.80~1.60%, Mn:0.80~1.00%, Cr:1.00~2.00%,
Ni:1.20~2.20%, Mo:0.60~0.80%, V:0.20~0.40%, Nb:0.20~0.40%, P≤0.030%, S≤
0.025%；S2, melting spheroidising and casting: 1), in medium-frequency induction furnace melting molten steel, selection slag former progress slag making, steel
To 1520 DEG C~1550 DEG C, dross is white to skim temperature, and it is concise to LF essence furnace to tap, when steel temperature is to 1580 DEG C~1600 DEG C,
Chromium, vanadium, niobium high-melting-point alloy is added, the purification of 2~4kg/t yttrium-base heavy rare earth alterant is added when steel temperature is to 1620 DEG C~1630 DEG C
Molten steel, then plus 0.030% aluminium deoxidation, spheroidising of then tapping；2), nodulizer CaSi alloy addition 0.50~0.80%/
t；Be disposed and bred again with 0.45~0.60%BaCa inovulant, incubation period with electromagnetic mixer stir 30~50s, calmness 8~
It is poured after 10min；3) it is slightly vibrated when, being poured with electromagnetic vibrator, improves consistency when solidification of molten steel, refine micro- group
It knits, eliminates area, body of roll tissue looseness；S3, roll heat treatment: roll uses hot Case opening operation, and roller temperature is hot to 550 DEG C~650 DEG C
Shove charge of unpacking is heat-treated；1) it, heats up 10 DEG C per hour, until keeping the temperature 6 hours at 660 DEG C；2) it, heats up 12 DEG C per hour, until 880 DEG C
Heat preservation 4 hours；3), roller temperature rises to Acm+30~50 DEG C, keeps the temperature 12 hours, then hangs out spray and quenches processing；4), roller temperature is to 480 DEG C
~520 DEG C into furnace tempering；S4, after roll is restored to room temperature, carry out surface finish work handle out finished product.
Wherein, it is moulding fresh sand 50~60%, rubble ash 10~50%, Fluorspar Powder 5~20% that slag former, which is selected, in S2.In S2
It is moulding fresh sand 60%, rubble ash 30%, Fluorspar Powder 10% that slag former, which is selected,.
Embodiment one:
A kind of production and processing technology for the Producing Graphite Steel Rollers being exclusively used in machine components gear rolling includes the following steps: S1, optimization
Configure chemical component: C:1.80%, Si:0.80%, Mn:0.80%, Cr:1.00%, Ni:1.20%, Mo:0.60%, V:0.20%, Nb:
0.20%, P:0.010%, S:0.010%；S2, melting spheroidising and casting: 1), in medium-frequency induction furnace melting molten steel, selection
The mixed slag former of moulding fresh sand 50%, rubble ash 30%, Fluorspar Powder 20% carries out slag making, and to 1520 DEG C, dross is white to be taken off steel temperature
When steel temperature is to 1580 DEG C, chromium, vanadium, niobium high-melting-point alloy is added in slag, and it is concise to LF essence furnace to tap, and adds when steel temperature is to 1620 DEG C
Enter 2kg/t yttrium-base heavy rare earth alterant purification molten steel, then plus 0.030% aluminium deoxidation, spheroidising of then tapping；2), nodulizer
CaSi alloy addition 0.50%/t；It is disposed and is bred again with 0.45%BaCa inovulant, incubation period is stirred with electromagnetic mixer
It is poured after 30s, calm 8min；3) it is slightly vibrated when, being poured with electromagnetic vibrator, improves consistency when solidification of molten steel, refinement
Microscopic structure eliminates area, body of roll tissue looseness；S3, roll heat treatment: roll uses hot Case opening operation, and roller temperature is hot to 550 DEG C
Shove charge of unpacking is heat-treated；1) it, heats up 10 DEG C per hour, until keeping the temperature 6 hours at 660 DEG C；2) it, heats up 12 DEG C per hour, until 880 DEG C
Heat preservation 4 hours；3), roller temperature rises to Acm+30 DEG C, keeps the temperature 12 hours, then hangs out spray and quenches processing；4), roller temperature is to 480 DEG C into furnace
Tempering；S4, after roll is restored to room temperature, carry out surface finish work handle out finished product one.
Embodiment two:
A kind of production and processing technology for the Producing Graphite Steel Rollers being exclusively used in machine components gear rolling includes the following steps: S1, optimization
Configure chemical component: C:2.00%, Si:1.45%, Mn:0.90%, Cr:1.50%, Ni:2.00%, Mo:0.70%, V:0.30%, Nb:
0.30%, P:0.020%, S:0.020%；S2, melting spheroidising and casting: 1), in medium-frequency induction furnace melting molten steel, selection
The mixed slag former of moulding fresh sand 60%, rubble ash 30%, Fluorspar Powder 10% carries out slag making, and to 1540 DEG C, dross is white to be taken off steel temperature
When steel temperature is to 1590 DEG C, chromium, vanadium, niobium high-melting-point alloy is added in slag, and it is concise to LF essence furnace to tap, and adds when steel temperature is to 1625 DEG C
Enter 3kg/t yttrium-base heavy rare earth alterant purification molten steel, then plus 0.030% aluminium deoxidation, spheroidising of then tapping；2), nodulizer
CaSi alloy addition 0.67%/t；It is disposed and is bred again with 0.45~0.60%BaCa inovulant, incubation period electromagnetic agitation
Machine stirs 40s, is poured after calm 9min；3) it is slightly vibrated when, being poured with electromagnetic vibrator, improves densification when solidification of molten steel
Degree, refinement microstructure eliminate area, body of roll tissue looseness；S3, roll heat treatment: roll uses hot Case opening operation, roller temperature to 600
It DEG C is the unpacking shove charge heat treatment of heat；1) it, heats up 10 DEG C per hour, until keeping the temperature 6 hours at 660 DEG C；2) it, heats up 12 DEG C per hour,
4 hours are kept the temperature to 880 DEG C；3), roller temperature rises to Acm+40 DEG C, keeps the temperature 12 hours, then hangs out spray and quenches processing；4), roller temperature is to 500
DEG C into furnace tempering；S4, after roll is restored to room temperature, carry out surface finish work handle out finished product two.
Embodiment three:
A kind of production and processing technology for the Producing Graphite Steel Rollers being exclusively used in machine components gear rolling includes the following steps: S1, optimization
Configure chemical component: C:2.20%, Si:1.60%, Mn:1.00%, Cr:2.00%, Ni:2.20%, Mo:0.80%, V:0.40%, Nb:
0.40%, P:0.030%, S:0.025%；S2, melting spheroidising and casting: 1), in medium-frequency induction furnace melting molten steel, selection
The mixed slag former of moulding fresh sand 50%, rubble ash 40%, Fluorspar Powder 10% carries out slag making, and to 1550 DEG C, dross is white to be taken off steel temperature
When steel temperature is to 1600 DEG C, chromium, vanadium, niobium high-melting-point alloy is added in slag, and it is concise to LF essence furnace to tap, and adds when steel temperature is to 1630 DEG C
Enter 4kg/t yttrium-base heavy rare earth alterant purification molten steel, then plus 0.030% aluminium deoxidation, spheroidising of then tapping；2), nodulizer
CaSi alloy addition 0.80%/t；It is disposed and is bred again with 0.60%BaCa inovulant, incubation period is stirred with electromagnetic mixer
It is poured after 30~50s, calm 10min；3) it is slightly vibrated when, being poured with electromagnetic vibrator, improves consistency when solidification of molten steel,
Refinement microstructure eliminates area, body of roll tissue looseness；S3, roll heat treatment: roll uses hot Case opening operation, and roller temperature is to 650 DEG C
It is the unpacking shove charge heat treatment of heat；1) it, heats up 10 DEG C per hour, until keeping the temperature 6 hours at 660 DEG C；2) it, heats up 12 DEG C per hour, until
880 DEG C keep the temperature 4 hours；3), roller temperature rises to Acm+50 DEG C, keeps the temperature 12 hours, then hangs out spray and quenches processing；4), roller temperature is to 520 DEG C
Into furnace tempering；S4, after roll is restored to room temperature, carry out surface finish work handle out finished product three.
Finished product one, finished product two and finished product three that above-mentioned three kinds of processing technologys obtain are detected, detection data is as follows:
| Finished product one | Finished product two | Finished product three | |
| Roll surface hardness (HSD) | 66 | 70 | 68 |
| Tensile strength (MPa) | 590 | 660 | 630 |
It is above-described, it is merely preferred embodiments of the present invention, but scope of protection of the present invention is not limited thereto, appoints
What those familiar with the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its sends out
Bright design is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (6)
1. a kind of Producing Graphite Steel Rollers for being exclusively used in machine components gear rolling, it is characterised in that: have disposed in parallel first to roll
Roller and second roll are along the circumferential direction uniformly arranged on the first roll outer wall and second roll outer wall and several roll tooth；Institute
The first roll and second roll stated rotate in same direction operation and carry out rolling tooth to round piece.
2. a kind of Producing Graphite Steel Rollers for being exclusively used in machine components gear rolling according to claim 1, it is characterised in that: institute
The first roll surface and second roll surface hardness stated are 65~70HSD；The first roll tensile strength and second
Roll tensile strength >=580MPa.
3. a kind of Producing Graphite Steel Rollers for being exclusively used in machine components gear rolling according to claim 1, it is characterised in that: institute
The first roll stated and second roll metallographic elementary organization are as follows: globular graphite+acinous alloy-type carbide+tempered sorbite+
Bainite+martensite.
4. a kind of production and processing technology for the Producing Graphite Steel Rollers for being exclusively used in machine components gear rolling, which is characterized in that including such as
Lower step:
S1, chemical component is distributed rationally: C:1.80~2.20%, Si:0.80~1.60%, Mn:0.80~1.00%, Cr:1.00~
2.00%, Ni:1.20~2.20%, Mo:0.60~0.80%, V:0.20~0.40%, Nb:0.20~0.40%, P≤0.030%, S
≤0.025%；
, in medium-frequency induction furnace melting molten steel S2, melting spheroidising and casting: 1), slag former is selected to carry out slag making, steel temperature is extremely
1520 DEG C~1550 DEG C, dross is white to skim, and it is concise to LF essence furnace to tap, and when steel temperature is to 1580 DEG C~1600 DEG C, is added
Chromium, vanadium, niobium high-melting-point alloy are added 2~4kg/t yttrium-base heavy rare earth alterant and purify steel when steel temperature is to 1620 DEG C~1630 DEG C
Water, then plus 0.030% aluminium deoxidation, spheroidising of then tapping；2), 0.50~0.80%/t of nodulizer CaSi alloy addition；
Be disposed and bred again with 0.45~0.60%BaCa inovulant, incubation period with electromagnetic mixer stir 30~50s, calmness 8~
It is poured after 10min；3) it is slightly vibrated when, being poured with electromagnetic vibrator, improves consistency when solidification of molten steel, refine micro- group
It knits, eliminates area, body of roll tissue looseness；
S3, roll heat treatment: roll uses hot Case opening operation, and roller temperature is that the unpacking shove charge of heat is heat-treated to 550 DEG C~650 DEG C；1),
It heats up 10 DEG C per hour, until keeping the temperature 6 hours at 660 DEG C；2) it, heats up 12 DEG C per hour, until 880 DEG C keep the temperature 4 hours；3), roller temperature
It rises to Acm+30~50 DEG C, keeps the temperature 12 hours, then hang out spray and quench processing；4), roller temperature is to 480 DEG C~520 DEG C at furnace tempering
Reason；
S4, after roll is restored to room temperature, carry out surface finish work handle out finished product.
5. a kind of production and processing technology for the Producing Graphite Steel Rollers for being exclusively used in machine components gear rolling as claimed in claim 4,
It is characterized by: it is moulding fresh sand 50~60%, rubble ash 10~50%, Fluorspar Powder 5~20% that slag former, which is selected, in the S2.
6. a kind of production and processing technology for the Producing Graphite Steel Rollers for being exclusively used in machine components gear rolling as claimed in claim 5,
It is characterized by: it is moulding fresh sand 60%, rubble ash 30%, Fluorspar Powder 10% that slag former, which is selected, in the S2.
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| CN201910607629.5A CN110205555A (en) | 2019-07-08 | 2019-07-08 | A kind of Producing Graphite Steel Rollers being exclusively used in machine components gear rolling |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111101053A (en) * | 2019-12-30 | 2020-05-05 | 中钢集团邢台机械轧辊有限公司 | Working roll for wire rod rough rolling frame and manufacturing method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109694996A (en) * | 2019-02-28 | 2019-04-30 | 常州市力创轧辊有限公司 | A kind of seamless steel pipe rolling mill alloy Producing Graphite Steel Rollers and preparation method thereof |
| CN211036053U (en) * | 2019-07-08 | 2020-07-17 | 江苏君盛轧辊有限公司 | Graphite steel roll special for rolling mechanical part gear |
-
2019
- 2019-07-08 CN CN201910607629.5A patent/CN110205555A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109694996A (en) * | 2019-02-28 | 2019-04-30 | 常州市力创轧辊有限公司 | A kind of seamless steel pipe rolling mill alloy Producing Graphite Steel Rollers and preparation method thereof |
| CN211036053U (en) * | 2019-07-08 | 2020-07-17 | 江苏君盛轧辊有限公司 | Graphite steel roll special for rolling mechanical part gear |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111101053A (en) * | 2019-12-30 | 2020-05-05 | 中钢集团邢台机械轧辊有限公司 | Working roll for wire rod rough rolling frame and manufacturing method thereof |
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