CN109290162A - A kind of wear-resisting oscillation ring and preparation method thereof for pneumatic high-frequency excitation equipment - Google Patents
A kind of wear-resisting oscillation ring and preparation method thereof for pneumatic high-frequency excitation equipment Download PDFInfo
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- CN109290162A CN109290162A CN201811305414.XA CN201811305414A CN109290162A CN 109290162 A CN109290162 A CN 109290162A CN 201811305414 A CN201811305414 A CN 201811305414A CN 109290162 A CN109290162 A CN 109290162A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/18—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency wherein the vibrator is actuated by pressure fluid
-
- 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
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- 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
- C21D1/26—Methods of annealing
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- 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
- C21D1/26—Methods of annealing
- C21D1/28—Normalising
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- 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
- C21D9/40—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rings; for bearing races
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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- Metallurgy (AREA)
- Organic Chemistry (AREA)
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Abstract
The present invention provides a kind of wear-resisting oscillation ring for Pneumatic vibration exciter, it is the ring body prepared by the quenching and tempering steel of nitrogen treatment, and the boss ratio of the ring body is 5~8:6~10, and the ratio of ring body height and anchor ring width is 2~5:1~4.Oscillation ring of the present invention has ideal density, hardness, toughness, wearability, can do high speed rotation under gas-powered to provide high-frequency vibration, and have longer service life than other materials.The present invention also provides the methods for preparing the wear-resisting oscillation ring.
Description
Technical field
The present invention relates to a kind of mechanical equipment component for providing high-frequency vibration more particularly to a kind of pneumatic type excitational equipments
Oscillation ring.
Background technique
Vibration excitor is attached in certain mechanical and equipment to the device for generating exciting force, is the weight using mechanical oscillation
Want component.Vibration excitor can make the vibratory output for being swashed object acquisition certain forms and size, and vibration excitor can be used as driver unit composition
Vibrating machine, to realize the work such as make firm by ramming of the conveying of material or object, screening, closely knit, molding, stirring and soil sandstone.
By the difference of excitation pattern, vibration excitor is divided into the patterns such as inertia-type electrodynamic type, electromagnetic type, electric-liquid type, pneumatic type and fluid pressure type.
Whether the vibration excitor of which kind of pattern, the purpose of operation are all to produce and export mechanical oscillation, and mechanical oscillation
Generate all can with vibration component abrasion and consumption；Meanwhile mechanical part can also in high-frequency vibration frictional heat generation, cause
Core component expands with heat and contract with cold.These are all an important factor for influencing vibration excitor service life.
At present in pneumatic vibrator, there are many manufacture material for generating the core component of vibration, have carbon steel, cast iron, aluminium alloy,
Bronze, stainless steel and extruded aluminium etc..The vibration core component of these materials production is in stability, toughness, hardness and wearability etc.
Aspect has respective defect, can not for a long time, high-frequency vibration is steadily provided, bring limitation to using.
Summary of the invention
It is an object of the invention to: a kind of wear-resisting oscillation ring and its preparation that high-frequency vibration can be done under gas-powered is provided
Method, make the oscillation ring as vibration excitor core vibration component have ideal density, hardness, toughness, wearability with
And longer service life.
Above-mentioned purpose of the invention is realized by following scheme:
Firstly, providing a kind of wear-resisting oscillation ring for Pneumatic vibration exciter, it is by the quenching and tempering steel system of nitrogen treatment
Standby ring body, the boss ratio of the ring body are 5~8:6~10, and the ratio of ring body height and anchor ring width is 2~5:1~4.
Core component of the oscillation ring as Pneumatic vibration exciter, high speed rotation at work, while powerful exciting force is generated,
This requires oscillation rings of the invention to be prepared by the material of ideal performance.
The material brittleness for being first oscillation ring cannot be excessively high, and excessively high brittleness holds that oscillation ring in high speed rotation and vibration
Easy damaged.Therefore in preferred embodiments of the present invention, the quenching and tempering steel is that phosphorus content is quenched not higher than 0.40% alloy
Steel；More preferable quenching and tempering steel of the phosphorus content 0.35~0.38%.
In order to further improve the mechanical performance of the oscillation ring, so that the hardness of oscillation ring and toughness is reached one and be suitble to height
Speed rotates and the desired level of high-frequency vibration, and in preferred embodiments of the present invention, the quenching and tempering steel has selected to contain aluminium
(Al) quenching and tempering steel of element；More preferably further contain the quenching and tempering steel of chromium (Cr) element and molybdenum (Mo) element.
Experiments verify that discovery, can provide the vibration of the present invention of exciting force by long-term high-frequency rotating under air stream drives
Rotating ring, performance indicator are as follows: yield strength σ s (MPa): >=800, elongation δ 5 (%) >=14, contraction percentage of area ψ (%) >=
40, Impact energy Ak v (J) >=70, notched bar impact strength α kv (J/cm2) >=85, Brinell hardness ()≤320 HBS100/3000.
Other than the selection of material, the specification and shape of the oscillation ring also can generate important shadow to Pneumatic rotary process
It rings.
In order to be more suitable air stream drives, in preferred embodiments of the present invention, the ring body boss ratio be 5~6:8~
9；More preferable boss ratio is 5.5~5.6:8.4~8.5.
In preferred embodiments of the present invention, the ratio of the ring body height and anchor ring width is 3~4:2~3；More preferable 3.8
~4:2.5~2.8.
In order to reduce the air drag in Pneumatic vibration exciter vibration processes, in preferred embodiments of the present invention, the ring body
Lateral surface is equipped with cambered surface in upper lower edge respectively；In preferred scheme, the cambered surface radian is in 0.25~0.45rad range
It is interior.It is demonstrated experimentally that the cambered surface in the preferred arc range can bring ideal vibration effect for oscillation ring under gas-powered
Fruit.
In addition, the present invention also provides a kind of methods for preparing the wear-resisting oscillation ring, comprising the following steps:
1) aluminium of the mass fraction less than 1.5% is added in chrome-molybdenum steel, obtains alloy material；
2) alloy material obtained by step 1) is forged into ring body shape；The boss ratio of the ring body is 5~8:6~10,
The ratio of ring body height and anchor ring width is 2~5:1~4；
3) the obtained ring body of step 2) forging is successively heat-treated, modifier treatment and Nitrizing Treatment, finally obtains institute
The wear-resisting oscillation ring stated.
In currently preferred preparation method, the mass fraction that aluminium is added described in step 1) is 0.7%~1.10%.
In currently preferred preparation method, heat treatment described in step 3) is contained according to the resulting alloy material of step 1)
Carbon amounts carries out annealing or normalized treatment；In further preferred scheme, the annealing temperature is at 840~900 DEG C, the normalizing
Temperature is at 930~970 DEG C.
Ring body center portion has good comprehensive mechanical performance when in order to guarantee step 3) nitriding, and it is necessary to by work before nitriding
Part carries out modifier treatment, makes to obtain tempered sorbite tissue.The modifier treatment is that the ring body after the heat treatment is first high
Temperature quenching improves ring body hardness, then improves the uniformity of ring body hardness through high tempering.Since ferro-aluminum ferritic stability is high, it is not easy
It is dissolved in austenite, it is therefore desirable to optimize to quenched.The quenching of currently preferred high temperature is at 930~960 DEG C with 60~70
DEG C oil hardening, soaking time is 1.5 times of common alloy steel；Preferred high tempering temperature at 700~720 DEG C, heat preservation 2~
4h.Ferrite dissolution is insufficient when hardening heat is relatively low or soaking time is too short, occurs big bulk nitride after quenching, infiltration at this
Nitrogen concentration is high, and hardness is high, and brittleness is big, easily peels off；When hardening heat is excessively high, in addition to decarburization is serious and coarse grains, after nitriding
It will appear network nitride, brittle failure often occur.
Oscillation ring is the core component of Pneumatic vibration exciter, in the application of the specific areas such as material mixing, needs to swash
Vibration device is by the vibration of the ultrahigh speed of oscillation ring rotation offer high frequency (for example, it is desired to which the rotation speed of 50000r/min generates
Much higher than the vibration of existing vibration excitor frequency), to generate powerful exciting force (160KN).It is closed this requires oscillation ring has
Suitable intensity, hardness and high-wearing feature.The present invention is carried out big by the oscillation ring of different shapes being prepared into unlike material
Screening experiment is measured, the final quenching and tempering steel ring body for assert nitrogen treatment, which has to rotate by Pneumatic high-speed, provides high-frequency vibration institute
The ideal performance needed, can not only be by air stream drives high speed rotation, and compares other materials under the revolving speed of 50000r/min
The service life of exciting ring was to the youthful and the elderly 20 years.
Specific embodiment
It is more at large solved below by way of preparation method of the more specific embodiment to above-mentioned selective absorbent
It releases.In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, but the present invention can also use
Implement different from other way described herein, those skilled in the art can do without violating the connotation of the present invention
It is similar to promote, therefore the present invention is not limited by the specific embodiments disclosed below.
Embodiment 1
A kind of oscillation ring for pneumatic high-frequency vibration exciter, it by 38CrMoAlA high-carbon steel be material by the following method
Manufacture:
1) aluminium that mass fraction is 1.0% is added in chrome-molybdenum steel, obtains alloy material；
2) alloy material obtained by step 1) is forged into the ring body of bracelet-like shape；The inner wall of ring body is smooth, on outer wall
Lower edge is cambered surface, and 56 millimeters of ring internal diameter, 84 millimeters of outer diameter, 40 millimeters of ring body height, 28 millimeters of anchor ring width, outer wall cambered surface
Radian is 0.25rad, and cambered surface radius is 20 millimeters；
3) the obtained ring body of step 2) forging is successively made annealing treatment, modifier treatment and Nitrizing Treatment；Annealing temperature
At 880~900 DEG C；Modifier treatment includes high temperature quenching and high tempering: high temperature quenching is at 930~940 DEG C with 60 DEG C of oil quenchings
Fire, soaking time are 1.5 times of common alloy steel；High tempering temperature keeps the temperature 4h at 700 DEG C；Conventional nitriding is finally carried out again
Processing forms 0.3mm nitration case in ring body surface, finally obtains wear-resisting oscillation ring.
The oscillation ring of the present embodiment can be used for pneumatic type high-frequency excitation equipment, the core component set as offer high-frequency vibration
It connects and carries out high speed rotation on the indoor Aerodynamic Axis of excitational equipment exciting.When high speed rotary motion on the oscillation ring and exciting room
The gap of lower left and right is less than 0.1 millimeter.It is such to design the kinetic energy that make full use of compressed air when rotated, reduction and air
Frictional resistance, reach high speed rotation and generate the powerful exciting force of 160KN.
Embodiment 2
A kind of oscillation ring for pneumatic high-frequency vibration exciter, it is that material manufactures by the following method by 40Cr steel:
1) 40Cr steel forging is caused to the ring body of bracelet-like shape；The inner wall of ring body is smooth, and lower edge is arc on outer wall
Face, 50 millimeters of ring internal diameter, 80 millimeters of outer diameter, 42 millimeters of ring body height, 26 millimeters of anchor ring width, outer wall cambered surface radian is
0.35rad, cambered surface radius are 20 millimeters；
2) the obtained ring body of step 1) forging is successively made annealing treatment, modifier treatment and Nitrizing Treatment；Annealing temperature
At 840~850 DEG C；Modifier treatment includes high temperature quenching and high tempering: high temperature quenching is at 950 DEG C with 70 DEG C of oil hardening, is protected
The warm time is 1.5 times of common alloy steel；High tempering temperature keeps the temperature 2h at 720 DEG C；Finally conventional Nitrizing Treatment is carried out again,
0.5mm nitration case is formed in ring body surface, finally obtains wear-resisting oscillation ring.
The oscillation ring of the present embodiment can be used for pneumatic type high-frequency excitation equipment, the core component set as offer high-frequency vibration
It connects and carries out high speed rotation on the indoor Aerodynamic Axis of excitational equipment exciting.When high speed rotary motion on the oscillation ring and exciting room
The gap of lower left and right is less than 0.1 millimeter.It is such to design the kinetic energy that make full use of compressed air when rotated, reduction and air
Frictional resistance, reach high speed rotation and generate powerful exciting force.
Embodiment 3
A kind of oscillation ring for pneumatic high-frequency vibration exciter, it is that material manufactures by the following method by 25Cr2MoV steel:
1) 25Cr2MoV steel forging is caused to the ring body of bracelet-like shape；The inner wall of ring body is smooth, and lower edge is equal on outer wall
For cambered surface, 60 millimeters of ring outer diameter, 40 millimeters of internal diameter, 32 millimeters of ring body height, 20 millimeters of anchor ring width, outer wall cambered surface radian is
0.45rad, cambered surface radius are 20 millimeters；
2) the obtained ring body of step 1) forging is successively made annealing treatment, modifier treatment and Nitrizing Treatment；Annealing temperature
At 850 DEG C；Modifier treatment includes high temperature quenching and high tempering: high temperature quenching is at 900 DEG C with 65 DEG C of oil hardening, soaking time
It is 1.5 times of common alloy steel；High tempering temperature keeps the temperature 4h at 720 DEG C；Conventional Nitrizing Treatment is finally carried out again, in ring body
Surface forms 0.5mm nitration case, finally obtains wear-resisting oscillation ring.
The oscillation ring of the present embodiment can be used for pneumatic type high-frequency excitation equipment, the core component set as offer high-frequency vibration
It connects and carries out high speed rotation on the indoor Aerodynamic Axis of excitational equipment exciting.When high speed rotary motion on the oscillation ring and exciting room
The gap of lower left and right is less than 0.1 millimeter.It is such to design the kinetic energy that make full use of compressed air when rotated, reduction and air
Frictional resistance, reach high speed rotation and generate powerful exciting force.
Embodiment 4
A kind of oscillation ring for pneumatic high-frequency vibration exciter, it is that material manufactures by the following method by 30Cr3WA steel:
1) 30Cr3WA steel forging is caused to the ring body of bracelet-like shape；The inner wall of ring body is smooth, and lower edge is on outer wall
Cambered surface, 70 millimeters of ring outer diameter, 45 millimeters of internal diameter, 35 millimeters of ring body height, 25 millimeters of anchor ring width, outer wall cambered surface radian is
0.25rad, cambered surface radius are 20 millimeters；
2) the obtained ring body of step 1) forging is successively made annealing treatment, modifier treatment and Nitrizing Treatment；Annealing temperature
At 880 DEG C；Modifier treatment includes high temperature quenching and high tempering: high temperature quenching is at 930 DEG C with 65 DEG C of oil hardening, soaking time
It is 1.5 times of common alloy steel；High tempering temperature keeps the temperature 4h at 710 DEG C；Conventional Nitrizing Treatment is finally carried out again, in ring body
Surface forms 0.5mm nitration case, finally obtains wear-resisting oscillation ring.
Embodiment 5
A kind of oscillation ring for pneumatic high-frequency vibration exciter, it by 38CrMoAlA high-carbon steel be material by the following method
Manufacture:
1) aluminium that mass fraction is 0.7% is added in chrome-molybdenum steel, obtains alloy material；
2 alloy materials for obtaining step 1) are forged into the ring body of bracelet-like shape；The inner wall of ring body is smooth, on outer wall
Lower edge is cambered surface, and 78 millimeters of ring outer diameter, 55 millimeters of internal diameter, 38 millimeters of ring body height, 26 millimeters of anchor ring width, outer wall cambered surface
Radian is 0.40rad, and cambered surface radius is 20 millimeters；
3) the obtained ring body of step 2) forging is successively made annealing treatment, modifier treatment and Nitrizing Treatment；Annealing temperature
At 890 DEG C；Modifier treatment includes high temperature quenching and high tempering: high temperature quenching is at 940 DEG C with 70 DEG C of oil hardening, soaking time
It is 1.5 times of common alloy steel；High tempering temperature keeps the temperature 4h at 700 DEG C；Conventional Nitrizing Treatment is finally carried out again, in ring body
Surface forms 0.5mm nitration case, finally obtains wear-resisting oscillation ring.
Embodiment 6
A kind of oscillation ring for pneumatic high-frequency vibration exciter, it is that material manufactures by the following method by 40CrNiMoA steel:
1) 40CrNiMoA steel forging is caused to the ring body of bracelet-like shape；The inner wall of ring body is smooth, and lower edge is equal on outer wall
For cambered surface, 70 millimeters of ring outer diameter, 45 millimeters of internal diameter, 35 millimeters of ring body height, 25 millimeters of anchor ring width, outer wall cambered surface radian is
0.30rad, cambered surface radius are 20 millimeters；
2) ring body that step 1) forging obtains successively is subjected to normalized treatment, modifier treatment and Nitrizing Treatment；Normalizing temperature
At 950 DEG C；Modifier treatment includes high temperature quenching and high tempering: high temperature quenching is at 930 DEG C with 65 DEG C of oil hardening, soaking time
It is 1.5 times of common alloy steel；High tempering temperature keeps the temperature 4h at 710 DEG C；Conventional Nitrizing Treatment is finally carried out again, in ring body
Surface forms 0.5mm nitration case, finally obtains wear-resisting oscillation ring.
Claims (10)
1. a kind of wear-resisting oscillation ring for Pneumatic vibration exciter, it is characterised in that: it is by the quenching and tempering steel system of nitrogen treatment
Standby ring body, the boss ratio of the ring body are 5~8:6~10, and the ratio of ring body height and anchor ring width is 2~5:1~4.
2. wear-resisting oscillation ring described in claim 1, which is characterized in that the quenching and tempering steel is that phosphorus content is not higher than
0.40% quenching and tempering steel；More preferable quenching and tempering steel of the phosphorus content 0.35~0.38%.
3. wear-resisting oscillation ring described in claims 1 or 2 any one, which is characterized in that the quenching and tempering steel selects
Quenching and tempering steel containing aluminium (Al) element；Alloy more preferably further containing chromium (Cr) element and molybdenum (Mo) element is quenched
Steel.
4. wear-resisting oscillation ring described in claim 1, which is characterized in that the quenching and tempering steel yield strength of the nitrogen treatment
σ s (MPa): >=800, elongation δ 5 (%) >=14, contraction percentage of area ψ (%) >=40, Impact energy Ak v (J) >=70, impact flexibility
Value α kv (J/cm2) >=85, Brinell hardness ()≤320 HBS100/3000.
5. wear-resisting oscillation ring described in claim 1, which is characterized in that the ring body boss ratio is 5~6:8~9；It is more excellent
Selecting boss ratio is 5.5~5.6:8.4~8.5；The ratio of the ring body height and anchor ring width is 3~4:2~3；More preferably
3.8~4:2.5~2.8.
6. wear-resisting oscillation ring described in claim 1, which is characterized in that the ring body lateral surface is equipped with arc in upper lower edge respectively
Face；In preferred scheme, the cambered surface radian is within the scope of 0.25~0.45rad.
7. wear-resisting oscillation ring as claimed in claim 3, which is characterized in that it is prepared from the following steps:
1) aluminium of the mass fraction less than 1.5% is added in chrome-molybdenum steel, is preferably added to mass fraction 0.7%~1.10%
Aluminium obtains alloy material；
2) alloy material obtained by step 1) is forged into ring body shape；The boss ratio of the ring body is 5~8:6~10, ring body
The ratio of height and anchor ring width is 2~5:1~4；
3) the obtained ring body of step 2) forging is successively heat-treated, modifier treatment and Nitrizing Treatment, is finally obtained described
Wear-resisting oscillation ring.
8. preparing a kind of method of wear-resisting oscillation ring described in claim 3, comprising the following steps:
1) aluminium of the mass fraction less than 1.5% is added in chrome-molybdenum steel, is preferably added to mass fraction 0.7%~1.10%
Aluminium obtains alloy material；
2) alloy material obtained by step 1) is forged into ring body shape；The boss ratio of the ring body is 5~8:6~10, ring body
The ratio of height and anchor ring width is 2~5:1~4；
3) the obtained ring body of step 2) forging is successively heat-treated, modifier treatment and Nitrizing Treatment, is finally obtained described
Wear-resisting oscillation ring.
9. method according to any one of claims 8, it is characterised in that: heat treatment described in step 3) is according to the resulting alloy of step 1)
Material phosphorus content carries out annealing or normalized treatment；The annealing temperature at 840~900 DEG C, the normalizing temperature 930~
970℃。
10. method according to any one of claims 8, it is characterised in that: modifier treatment described in step 3) includes high temperature quenching and high temperature
Tempering；The described high temperature quenching is at 930~960 DEG C with 60~70 DEG C of oil hardening, and soaking time is the 1.5 of common alloy steel
Times；The high tempering temperature keeps the temperature 2~4h at 700~720 DEG C.
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Cited By (1)
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| CN111118261A (en) * | 2020-03-09 | 2020-05-08 | 湖南申亿机械应用研究院有限公司 | Heat treatment process for 40CrNiMo forged pin shaft |
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| CN111118261A (en) * | 2020-03-09 | 2020-05-08 | 湖南申亿机械应用研究院有限公司 | Heat treatment process for 40CrNiMo forged pin shaft |
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