CN109385506A - A kind of cylindrical die roll quenching technical - Google Patents
A kind of cylindrical die roll quenching technical Download PDFInfo
- Publication number
- CN109385506A CN109385506A CN201811511969.XA CN201811511969A CN109385506A CN 109385506 A CN109385506 A CN 109385506A CN 201811511969 A CN201811511969 A CN 201811511969A CN 109385506 A CN109385506 A CN 109385506A
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- China
- Prior art keywords
- cylindrical die
- die roll
- degrees celsius
- heated
- temperature
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- 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
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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
- C21D1/18—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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/06—Surface hardening
- C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
- C21D1/10—Surface hardening by direct application of electrical or wave energy; by particle radiation by electric induction
-
- 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
- C21D9/34—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tyres; for rims
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention discloses a kind of cylindrical die roll quenching technicals, comprising the following steps: S1, clears up the cylindrical die roll completed the process；S2, cylindrical die roll is placed into heating room, is heated to 800 ± 10 degrees Celsius, then kept for 30-60 minutes；S3, cylindrical die roll is placed into thermatron, and cylindrical die roll outer teeth groove is heated to 1020 ± 10 degrees Celsius；S4, cylindrical die roll is subjected to oil quenching；S5, after the temperature of cylindrical die roll tooth socket is reduced to 315 ± 5 degrees Celsius, cylindrical die roll is placed into thermatron again, tooth socket temperature is heated to 800 ± 12 degrees Celsius；S6, cylindrical die roll is subjected to high pressure gas quenching；S7, by the cylindrical die roll after high pressure gas quenching be placed into heating room in be tempered.For cylindrical die roll after this technique quenching treatment after long period use, the hardness and toughness of tooth still keep good, it is possible to reduce the occurrence of broken teeth.
Description
Technical field
The present invention relates to finishing fields, and in particular to cylindrical die roll quenching technical.
Background technique
Cylindrical die roll is a kind of tool that method on screw-rolling machine using metal plastic deformation rolls out screw thread.Cylindrical die roll by
It is needed to possess higher hardness and certain toughness in the characteristic (relying on rigidity roll-in screw thread) of its work.
After the conventional quenching technical that cylindrical die roll on the market carries out after processing now, being able to satisfy certain use is needed
It asks, the deficiency but hardness and toughness of the tooth of cylindrical die roll remain unchanged, after longer use, it may appear that the case where broken teeth.
Summary of the invention
In view of the above drawbacks of the prior art, it is an object of the invention to provide a kind of cylindrical die roll quenching technicals, pass through
For cylindrical die roll after this technique quenching treatment after long period use, the hardness and toughness of tooth still keep good, it is possible to reduce
The occurrence of broken teeth.
It is realized the purpose of the present invention is technical solution in this way:
Cylindrical die roll quenching technical, comprising the following steps:
S1, the cylindrical die roll completed the process is cleared up；
S2, cylindrical die roll is placed into heating room, is heated to 800 ± 10 degrees Celsius, then kept for 30-60 minutes；
S3, cylindrical die roll is placed into thermatron, and cylindrical die roll outer teeth groove is heated to 1020 ± 10 degrees Celsius；
S4, cylindrical die roll is subjected to oil quenching；
S5, after the temperature of cylindrical die roll tooth socket is reduced to 315 ± 5 degrees Celsius, cylindrical die roll is placed into high-frequency heating again
In device, tooth socket temperature is heated to 500 ± 12 degrees Celsius；
S6, cylindrical die roll is subjected to high pressure gas quenching；
S7, by the cylindrical die roll after high pressure gas quenching be placed into heating room in be tempered.
Further, in the step S6, when carrying out high pressure gas quenching, the pressure of high pressure gas is 18 bars；Gas is
Helium.
Further, in the step S4, when carrying out oil quenching, the initial temperature of quenching oil is 120 ± 5 degrees Celsius.
Further, in the step S3, after silk wheel outer teeth groove is heated to 1020 ± 10 degrees Celsius, wheel outer teeth groove is kept
For 1020 ± 10 degrees Celsius 30-60 minutes；Keeping temperature in cylindrical die roll mounting groove simultaneously is 980 ± 10.
Further, in the step S5, after the temperature of gear grooved is reduced to 315 ± 5 degrees Celsius, it is placed into Interior Space
In gas, after the temperature of gear grooved reduces by 50 ± 2 degree again, thermatron heating is reused.
Further, it in the step S5, after tooth socket temperature is heated to 800 ± 12 degrees Celsius, keeps temperature-resistant and holds
It is 20-25 minutes continuous.
Further, in the step S2, it includes four-stage that rolled thread, which is placed into heating room and carries out heating,；
Cylindrical die roll is uniformly heated to 560 ± 5 degrees Celsius by the first stage, is kept for 1-2 hours；
Cylindrical die roll is heated to 750 ± 5 degrees Celsius, is kept for 2-3 hours by second stage；
Cylindrical die roll is cooled to 700 ± 5 degrees Celsius, is kept for 1-2 hours by the phase III；
Cylindrical die roll is heated to 800 ± 10 degrees Celsius by fourth stage.
Further, the heating time of the first stage is 4-4.5 hours；The heating time of second stage is that 3-4 is small
When；The temperature fall time of phase III is 2-3 hours；The heating time of fourth stage is 1-2 hours.
Further, in the step S7, cylindrical die roll tempering includes two stages；
Cylindrical die roll is heated to 150-160 degrees Celsius, after being kept for 5-6 hours, is down to room temperature by the first stage；
Cylindrical die roll is heated to 190-200 degrees Celsius, after being kept for 4-5 hours, is down to room temperature by second stage.
By adopting the above-described technical solution, the present invention has the advantage that:
After the present invention is by normally preheating, the temperature of cylindrical die roll reaches 800 setting degree or so, so that on the tooth of cylindrical die roll
Carbide be converted into cementite, then by being heated to 1020 degrees centigrades after, can be by the carbide on the tooth of cylindrical die roll
Greatly reduce；After oil quenching, the martensite and evenly dispersed carbide of the tooth form of cylindrical die roll into strips can be made；Lead to again
Crossing secondary high-frequency heating can convert carbide again to 800 degrees centigrades, so that the carbonization on the tooth of cylindrical die roll
Object greatly reduces, and finally passes through high pressure gas quenching, so that the tooth of cylindrical die roll forms the martensite of plate, allows for cylindrical die roll in this way
Tooth has preferable intensity and toughness.
Other advantages, target and feature of the invention will be illustrated in the following description to a certain extent, and
And to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, Huo Zheke
To be instructed from the practice of the present invention.Target and other advantages of the invention can be wanted by following specification and right
Book is sought to be achieved and obtained.
Specific embodiment
Below with reference to the invention will be further described with embodiment.
Embodiment 1:
Cylindrical die roll quenching technical, comprising the following steps:
S1, the cylindrical die roll completed the process is cleared up；
S2, cylindrical die roll is placed into heating room, it includes four-stage that rolled thread, which is placed into heating room and carries out heating,；
Cylindrical die roll was uniformly heated to 560 ± 5 degrees Celsius in 4 hours by the first stage, was kept for 1 hour；
Cylindrical die roll is heated to 750 ± 5 degrees Celsius, is kept for 2 hours by second stage in 3 hours；
Cylindrical die roll is cooled to 700 ± 5 degrees Celsius, is kept for 1 hour by the phase III in 2 hours；
Cylindrical die roll was heated to 800 ± 10 degrees Celsius in 1 hour by fourth stage, then was kept for 30 minutes；
S3, cylindrical die roll is placed into thermatron, and cylindrical die roll outer teeth groove is heated to 1020 ± 10 degrees Celsius,
Keeping temperature in cylindrical die roll mounting groove simultaneously is 980 ± 10, is kept for 30 minutes, the toughness inside rolled thread can be made preferable.
S4, cylindrical die roll is carried out to oil quenching, the initial temperature of quenching oil is 120 ± 5 degrees Celsius；
The rate of rolled thread gear teeth cooling can be reduced.
S5, after the temperature of cylindrical die roll tooth socket is reduced to 315 ± 5 degrees Celsius, cylindrical die roll is placed into room air, to
After the temperature of gear grooved reduces by 50 ± 2 degree again, cylindrical die roll is placed into thermatron again；Tooth socket temperature is heated to
It 500 ± 12 degrees Celsius, keeps temperature-resistant and continues 20 minutes.
The temperature of cylindrical die roll tooth can be made to have great-jump-forward reduction.
S6, cylindrical die roll is carried out to high pressure gas quenching, gas selects helium, and the pressure of gas is 18 bars；
Select helium that can quickly take away the heat of rolled thread wheel surface, while 18 bars of intensity can guarantee that heat is lost again
Risk/reward ratio is more stable.
S7, by the cylindrical die roll after high pressure gas quenching be placed into heating room in be tempered, tempering include two stages；
Cylindrical die roll is heated to 150 degrees Celsius, after being kept for 5 hours, is down to room temperature by the first stage；
Cylindrical die roll is heated to 190 degrees Celsius, after being kept for 4 hours, is down to room temperature by second stage.
Embodiment 2:
Cylindrical die roll quenching technical, comprising the following steps:
S1, the cylindrical die roll completed the process is cleared up；
S2, cylindrical die roll is placed into heating room, it includes four-stage that rolled thread, which is placed into heating room and carries out heating,；
Cylindrical die roll was uniformly heated to 560 ± 5 degrees Celsius in 4.5 hours by the first stage, was kept for 2 hours；
Cylindrical die roll is heated to 750 ± 5 degrees Celsius, is kept for 3 hours by second stage in 4 hours；
Cylindrical die roll is cooled to 700 ± 5 degrees Celsius, is kept for 2 hours by the phase III in 3 hours；
Cylindrical die roll was heated to 800 ± 10 degrees Celsius in 2 hours by fourth stage, then was kept for 60 minutes；
S3, cylindrical die roll is placed into thermatron, and cylindrical die roll outer teeth groove is heated to 1020 ± 10 degrees Celsius,
Keeping temperature in cylindrical die roll mounting groove simultaneously is 980 ± 10, is kept for 60 minutes, the toughness inside rolled thread can be made preferable.
S4, cylindrical die roll is carried out to oil quenching, the initial temperature of quenching oil is 120 ± 5 degrees Celsius；
The rate of rolled thread gear teeth cooling can be reduced.
S5, after the temperature of cylindrical die roll tooth socket is reduced to 315 ± 5 degrees Celsius, cylindrical die roll is placed into room air, to
After the temperature of gear grooved reduces by 50 ± 2 degree again, cylindrical die roll is placed into thermatron again；Tooth socket temperature is heated to
It 500 ± 12 degrees Celsius, keeps temperature-resistant and continues 25 minutes.
The temperature of cylindrical die roll tooth can be made to have great-jump-forward reduction.
S6, cylindrical die roll is carried out to high pressure gas quenching, gas selects helium, and the pressure of gas is 18 bars；
Select helium that can quickly take away the heat of rolled thread wheel surface, while 18 bars of intensity can guarantee that heat is lost again
Risk/reward ratio is more stable.
S7, by the cylindrical die roll after high pressure gas quenching be placed into heating room in be tempered, tempering include two stages；
Cylindrical die roll is heated to 160 degrees Celsius, after being kept for 6 hours, is down to room temperature by the first stage；
Cylindrical die roll is heated to 200 degrees Celsius, after being kept for 5 hours, is down to room temperature by second stage.
Embodiment 3:
Cylindrical die roll quenching technical, comprising the following steps:
S1, the cylindrical die roll completed the process is cleared up；
S2, cylindrical die roll is placed into heating room, it includes four-stage that rolled thread, which is placed into heating room and carries out heating,；
Cylindrical die roll was uniformly heated to 560 ± 5 degrees Celsius in 1.3 hours by the first stage, was kept for 1.5 hours；
Cylindrical die roll is heated to 750 ± 5 degrees Celsius, is kept for 2.5 hours by second stage in 3.5 hours；
Cylindrical die roll is cooled to 700 ± 5 degrees Celsius, is kept for 1.5 hours by the phase III in 2.5 hours；
Cylindrical die roll was heated to 800 ± 10 degrees Celsius in 1.5 hours by fourth stage, then was kept for 40 minutes；
S3, cylindrical die roll is placed into thermatron, and cylindrical die roll outer teeth groove is heated to 1020 ± 10 degrees Celsius,
Keeping temperature in cylindrical die roll mounting groove simultaneously is 980 ± 10, is kept for 50 minutes, the toughness inside rolled thread can be made preferable.
S4, cylindrical die roll is carried out to oil quenching, the initial temperature of quenching oil is 120 ± 5 degrees Celsius；
The rate of rolled thread gear teeth cooling can be reduced.
S5, after the temperature of cylindrical die roll tooth socket is reduced to 315 ± 5 degrees Celsius, cylindrical die roll is placed into room air, to
After the temperature of gear grooved reduces by 50 ± 2 degree again, cylindrical die roll is placed into thermatron again；Tooth socket temperature is heated to
It 500 ± 12 degrees Celsius, keeps temperature-resistant and continues 23 minutes.
The temperature of cylindrical die roll tooth can be made to have great-jump-forward reduction.
S6, cylindrical die roll is carried out to high pressure gas quenching, gas selects helium, and the pressure of gas is 18 bars；
Select helium that can quickly take away the heat of rolled thread wheel surface, while 18 bars of intensity can guarantee that heat is lost again
Risk/reward ratio is more stable.
S7, by the cylindrical die roll after high pressure gas quenching be placed into heating room in be tempered, tempering include two stages；
Cylindrical die roll is heated to 155 degrees Celsius, after being kept for 5.5 hours, is down to room temperature by the first stage；
Cylindrical die roll is heated to 195 degrees Celsius, after being kept for 4.5 hours, is down to room temperature by second stage.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of the technical program, should all be covered in the present invention
Scope of the claims in.
Claims (9)
1. a kind of cylindrical die roll quenching technical, which comprises the following steps:
S1, the cylindrical die roll completed the process is cleared up；
S2, cylindrical die roll is placed into heating room, is heated to 800 ± 10 degrees Celsius, then kept for 30-60 minutes；
S3, cylindrical die roll is placed into thermatron, and cylindrical die roll outer teeth groove is heated to 1020 ± 10 degrees Celsius；
S4, cylindrical die roll is subjected to oil quenching；
S5, after the temperature of cylindrical die roll tooth socket is reduced to 315 ± 5 degrees Celsius, cylindrical die roll is placed into thermatron again
In, tooth socket temperature is heated to 800 ± 12 degrees Celsius；
S6, cylindrical die roll is subjected to high pressure gas quenching；
S7, by the cylindrical die roll after high pressure gas quenching be placed into heating room in be tempered.
2. cylindrical die roll quenching technical according to claim 1, which is characterized in that in the step S6, carry out high pressure gas quenching
When, the pressure of high pressure gas is 18 bars；Gas is helium.
3. cylindrical die roll quenching technical according to claim 1, which is characterized in that in the step S4, when carrying out oil quenching, quench
The initial temperature of kerosene is 120 ± 5 degrees Celsius.
4. cylindrical die roll quenching technical according to claim 1, which is characterized in that in the step S3, when silk wheel outer teeth groove
After being heated to 1020 ± 10 degrees Celsius, keep wheel outer teeth groove be 1020 ± 10 degrees Celsius 30-60 minutes；Cylindrical die roll is kept to pacify simultaneously
Temperature is 980 ± 10 in tankage.
5. cylindrical die roll quenching technical according to claim 1, which is characterized in that in the step S5, in the temperature of gear grooved
After degree is reduced to 315 ± 5 degrees Celsius, it is placed into room air, after the temperature of gear grooved reduces by 50 ± 2 degree again, reuses
Thermatron heating.
6. cylindrical die roll quenching technical according to claim 1, which is characterized in that in the step S5, when tooth socket temperature adds
Heat continues 20-25 minutes to after 800 ± 12 degrees Celsius, keeping temperature-resistant.
7. cylindrical die roll quenching technical according to claim 1, which is characterized in that in the step S2, rolled thread, which is placed into, to be added
It includes four-stage that heating is carried out in hot cell；
Cylindrical die roll is uniformly heated to 560 ± 5 degrees Celsius by the first stage, is kept for 1-2 hours；
Cylindrical die roll is heated to 750 ± 5 degrees Celsius, is kept for 2-3 hours by second stage；
Cylindrical die roll is cooled to 700 ± 5 degrees Celsius, is kept for 1-2 hours by the phase III；
Cylindrical die roll is heated to 800 ± 10 degrees Celsius by fourth stage.
8. cylindrical die roll quenching technical according to claim 7, which is characterized in that the heating time of the first stage is 4-
4.5 hour；The heating time of second stage is 3-4 hours；The temperature fall time of phase III is 2-3 hours；Fourth stage adds
The hot time is 1-2 hours.
9. any cylindrical die roll quenching technical in -8 according to claim 1, which is characterized in that in the step S7, rolled thread
Wheel tempering includes two stages；
Cylindrical die roll is heated to 150-160 degrees Celsius, after being kept for 5-6 hours, is down to room temperature by the first stage；
Cylindrical die roll is heated to 190-200 degrees Celsius, after being kept for 4-5 hours, is down to room temperature by second stage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811511969.XA CN109385506A (en) | 2018-12-11 | 2018-12-11 | A kind of cylindrical die roll quenching technical |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811511969.XA CN109385506A (en) | 2018-12-11 | 2018-12-11 | A kind of cylindrical die roll quenching technical |
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| Publication Number | Publication Date |
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| CN109385506A true CN109385506A (en) | 2019-02-26 |
Family
ID=65429351
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| CN201811511969.XA Pending CN109385506A (en) | 2018-12-11 | 2018-12-11 | A kind of cylindrical die roll quenching technical |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114959206A (en) * | 2022-07-04 | 2022-08-30 | 东宇东庵(无锡)热处理有限公司 | Vacuum gas quenching process for bearing steel |
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| CN105734247A (en) * | 2014-12-09 | 2016-07-06 | 重庆市金升机械配件制造有限公司 | Vacuum quenching process for thread rolling die |
| CN107937824A (en) * | 2017-12-11 | 2018-04-20 | 中国科学院金属研究所 | A kind of nickel-saving type 7Ni steel and its heat treatment process for ultra-low temperature surroundings |
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2018
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| CN105714090A (en) * | 2014-12-03 | 2016-06-29 | 重庆业高家具有限公司 | New steel rolling wheel heat treatment technology |
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| CN105734247A (en) * | 2014-12-09 | 2016-07-06 | 重庆市金升机械配件制造有限公司 | Vacuum quenching process for thread rolling die |
| CN107937824A (en) * | 2017-12-11 | 2018-04-20 | 中国科学院金属研究所 | A kind of nickel-saving type 7Ni steel and its heat treatment process for ultra-low temperature surroundings |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114959206A (en) * | 2022-07-04 | 2022-08-30 | 东宇东庵(无锡)热处理有限公司 | Vacuum gas quenching process for bearing steel |
| CN114959206B (en) * | 2022-07-04 | 2024-02-06 | 东宇东庵(无锡)科技有限公司 | Bearing steel vacuum gas quenching process |
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