CN111088422A - Heat treatment process for cold-rolled steel coil sleeve - Google Patents
Heat treatment process for cold-rolled steel coil sleeve Download PDFInfo
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- CN111088422A CN111088422A CN202010021751.7A CN202010021751A CN111088422A CN 111088422 A CN111088422 A CN 111088422A CN 202010021751 A CN202010021751 A CN 202010021751A CN 111088422 A CN111088422 A CN 111088422A
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- steel coil
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- coil sleeve
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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
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
- C21D9/085—Cooling or quenching
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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
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
- C21D1/60—Aqueous agents
-
- 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
- C21D1/78—Combined heat-treatments not provided for above
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention relates to the technical field of cold-rolled steel coil sleeve strength, and discloses a heat treatment process for a cold-rolled steel coil sleeve, which comprises a workpiece, wherein the workpiece is formed by forging, is firstly subjected to rough turning by a lathe, is then hoisted and guided into heat treatment equipment, is sequentially subjected to heat treatment procedures such as preheating treatment, quenching treatment, oil cooling, tempering treatment and the like, and is then subjected to finish turning treatment. The heat treatment process for the cold-rolled steel coil sleeve can control the temperature of the quenching liquid within a certain range, has excellent quality control effect on the quenched steel coil sleeve, effectively improves the hardness, the wear resistance and the reasonable organization of a workpiece, effectively ensures the heat treatment quality of the workpiece, obviously improves the strength and the hardness of the workpiece, effectively eliminates the residual stress generated by quenching the workpiece, prevents the workpiece from deforming or cracking in the using process, effectively improves the hardness, the strength, the toughness and the fatigue resistance of the workpiece, and meets the comprehensive requirements of using mechanical equipment.
Description
Technical Field
The invention relates to the technical field of heat treatment processes for cold-rolled steel coil sleeves, in particular to a heat treatment process for a cold-rolled steel coil sleeve.
Background
The cold-rolled steel coil sleeve is applied to cold-rolled stainless steel strips, copper strips, coiling machine equipment on silicon steel and special steel strips, and is used for coiling the steel strips, the forging heat treatment process of the traditional steel coil sleeve is firstly subjected to quenching and tempering treatment, so that the surface hardness of the steel coil sleeve is HRC23-26 degrees, after semi-finishing, the surface is generally 10mm in quenching depth, the surface hardness is high, scratches are not prone to occurring on the surface of the steel coil sleeve during use, but the steel coil sleeve is too low in quenching and tempering hardness (core), the sleeve is easy to deform during work, if the inner surface hardness of the steel coil sleeve is too high, cracks can also be generated, the steel coil sleeve body is not enough in core strength, the sleeve cannot recover after deformation, the sleeve can only be used after turning, the cost is.
Therefore, the inventor designs a heat treatment process of the cold-rolled steel coil sleeve through a plurality of times of experimental researches, optimizes the heat treatment quality of the steel coil sleeve and prolongs the service cycle of the steel coil sleeve.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a heat treatment process for a cold-rolled steel coil sleeve, which solves the problem that a workpiece is easy to deform, dent and crack in the use process due to the insufficient strength of the cold-rolled steel coil sleeve.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: a heat treatment process for a cold-rolled steel coil sleeve comprises a workpiece, wherein the workpiece is formed by forging, firstly rough turning is carried out through a lathe, then the workpiece is hoisted and guided into heat treatment equipment, heat treatment procedures such as preheating treatment, quenching treatment, oil cooling treatment, tempering treatment and the like are sequentially carried out, and then finish turning is carried out.
Preferably, the workpiece is made of 42CrMoV material.
Preferably, the workpiece is reserved with a finish turning allowance of at least 10mm during rough turning.
Preferably, the surface hardness of the workpiece after heat treatment is HRC45 + -3 degrees.
The heat treatment process of the cold-rolled steel coil sleeve is characterized by comprising the following heat treatment processing steps of:
s1, roughly turning the blank workpiece through a lathe, wherein at least a finish turning allowance of more than 10mm is reserved during rough turning;
s2, clamping, hoisting and guiding the roughly turned workpiece into heat treatment equipment, carrying out preheating treatment at 400 ℃, wherein the preheating time is 4-5 hours, and preserving heat;
s3, hoisting the preheated workpiece into 820-860 ℃ for heating and keeping for 3-4 hours, and then carrying out oil quenching treatment;
s4, cooling the workpiece in the oil quenching tank to 80 ℃, then hanging out for air cooling, immediately arranging the subsequent tempering process according to the hardness of the workpiece measured one by one, wherein the tempering heat treatment temperature range is 320-;
s5, hanging the workpiece after the tempering heat treatment out for air cooling;
s6, detecting the hardness of the workpiece through a Shore HS hardness tester, and ensuring that the surface hardness of the workpiece is HRC45 +/-3 ℃;
s7, carrying out finish turning on the workpiece after heat treatment and cooling;
s8, detecting the size of the workpiece through a size measurer;
and S9, warehousing qualified products.
(III) advantageous effects
The invention provides a heat treatment process for a cold-rolled steel coil sleeve. The method has the following beneficial effects:
(1) according to the heat treatment process for the cold-rolled steel coil sleeve, the workpiece is subjected to 400 ℃ → 820-.
(2) According to the heat treatment process for the cold-rolled steel coil sleeve, the workpiece is tempered after oil quenching treatment, residual stress generated by oil quenching of the workpiece is effectively eliminated, the workpiece is prevented from deforming or cracking in the using process, meanwhile, the hardness, strength, toughness and fatigue resistance of the workpiece are effectively improved, and the comprehensive requirements of using mechanical equipment performance are met.
(3) According to the heat treatment process of the cold-rolled steel coil sleeve, the high-molecular water-based quenching liquid is adopted to replace the traditional quenching oil for quenching in the heat treatment process, so that the problem that the workpiece is easily subjected to fire caused by long-term use of the quenching oil is avoided, meanwhile, no smoke pollution is caused, and the problem that the surface quality and hardness of the workpiece are influenced by the aging phenomenon of the quenching oil is avoided.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a side view of the present invention;
FIG. 3 is a diagram of a report form of the present invention;
FIG. 4 is a second exemplary embodiment of a test report.
In the figure: 1 workpiece.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-2, the present invention provides a technical solution: a heat treatment process for a cold-rolled steel coil sleeve comprises a workpiece 1, wherein the workpiece 1 is formed by forging, the workpiece 1 is made of 42CrMoV materials, rough turning is carried out through a lathe, at least a finish turning allowance of more than 10 millimeters is reserved when the workpiece 1 is subjected to rough turning, then the workpiece 1 is hoisted and guided into heat treatment equipment, heat treatment procedures such as preheating treatment, quenching treatment, oil cooling treatment and tempering treatment are sequentially carried out, the surface hardness of the workpiece 1 after the heat treatment is HRC45 +/-3 degrees, then finish turning is carried out, and AQ-641 aqueous quenching liquid is used as a quenching medium in the quenching treatment in the heat treatment process.
Example one
As shown in fig. 3, the heat treatment process of the steel coil sleeve with phi 808 x 608 x 1400 is taken as an example:
the heat treatment process of the cold-rolled steel coil sleeve is characterized by comprising the following heat treatment processing steps of:
s1, roughly turning the blank workpiece through a lathe, wherein at least a finish turning allowance of more than 10mm is reserved during rough turning;
s2, clamping, hoisting and guiding the roughly turned workpiece into heat treatment equipment, carrying out preheating treatment at 400 ℃, wherein the preheating time is 4-5 hours, and preserving heat;
s3, hoisting the preheated workpiece into 840 ℃ to heat and keep for 3.6 hours, and then carrying out oil quenching treatment;
s4, cooling the workpiece in the oil quenching tank to 80 ℃, then hanging out for air cooling, immediately arranging a subsequent tempering process according to the hardness of the workpiece measured one by one, wherein the tempering heat treatment temperature is 390 ℃, the tempering heat treatment time is 11.5 hours, and keeping the temperature;
s5, hanging the workpiece after the tempering heat treatment out for air cooling;
s6, detecting the hardness of the workpiece through a Shore HS hardness tester, and ensuring that the surface hardness of the workpiece is HRC45 +/-3 ℃;
s7, carrying out finish turning on the workpiece after heat treatment and cooling;
s8, detecting the size of the workpiece through a size measurer;
and S9, warehousing qualified products.
Example two
As shown in fig. 4, the heat treatment process of the steel coil sleeve with phi 790 x 608 x 1350 is taken as an example:
s1, roughly turning the blank workpiece through a lathe, wherein at least a finish turning allowance of more than 10mm is reserved during rough turning;
s2, clamping, hoisting and guiding the roughly turned workpiece into heat treatment equipment, carrying out preheating treatment at 400 ℃, wherein the preheating time is 4-5 hours, and preserving heat;
s3, hoisting the preheated workpiece into 820-860 ℃ for heating and keeping for 3.5 hours, and then carrying out oil quenching treatment;
s4, cooling the workpiece in the oil quenching tank to 80 ℃, then hanging out for air cooling, immediately arranging a subsequent tempering process according to the hardness of the workpiece measured one by one, wherein the tempering heat treatment temperature range is 380 ℃, the tempering heat treatment time is 11 hours, and preserving heat;
s5, hanging the workpiece after the tempering heat treatment out for air cooling;
s6, detecting the hardness of the workpiece through a Shore HS hardness tester, and ensuring that the surface hardness of the workpiece is HRC45 +/-3 ℃;
s7, carrying out finish turning on the workpiece after heat treatment and cooling;
s8, detecting the size of the workpiece through a size measurer;
and S9, warehousing qualified products.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a reference structure" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The heat treatment process of the cold-rolled steel coil sleeve comprises a workpiece 1 and is characterized in that: the workpiece 1 is formed by forging, firstly rough turning is carried out by a lathe, secondly hoisting and guiding are carried out in heat treatment equipment, heat treatment processes such as preheating treatment, quenching treatment, oil cooling treatment, tempering treatment and the like are carried out in sequence, and then finish turning is carried out.
2. The heat treatment process for the cold-rolled steel coil sleeve according to claim 1, characterized in that: the workpiece 1 is made of 42CrMoV material.
3. The heat treatment process for the cold-rolled steel coil sleeve according to claim 1, characterized in that: at least a finish turning allowance of more than 10 millimeters is reserved for the workpiece 1 during rough turning.
4. The heat treatment process for the cold-rolled steel coil sleeve according to claim 1, characterized in that: the surface hardness of the workpiece 1 after heat treatment is HRC45 +/-3 degrees.
5. The heat treatment process for the cold-rolled steel coil sleeve as claimed in claim 1, wherein the heat treatment process comprises the following steps:
s1, roughly turning the blank workpiece through a lathe, wherein at least a finish turning allowance of more than 10mm is reserved during rough turning;
s2, clamping, hoisting and guiding the roughly turned workpiece into heat treatment equipment, carrying out preheating treatment at 400 ℃, wherein the preheating time is 4-5 hours, and preserving heat;
s3, hoisting the preheated workpiece into 820-860 ℃ for heating and keeping for 3-4 hours, and then carrying out oil quenching treatment;
s4, cooling the workpiece in the oil quenching tank to 80 ℃, then hanging out for air cooling, immediately arranging the subsequent tempering process according to the hardness of the workpiece measured one by one, wherein the tempering heat treatment temperature range is 320-;
s5, hanging the workpiece after the tempering heat treatment out for air cooling;
s6, detecting the hardness of the workpiece through a Shore HS hardness tester, and ensuring that the surface hardness of the workpiece is HRC45 +/-3 ℃;
s7, carrying out finish turning on the workpiece after heat treatment and cooling;
s8, detecting the size of the workpiece through a size measurer;
and S9, warehousing qualified products.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010021751.7A CN111088422A (en) | 2020-01-09 | 2020-01-09 | Heat treatment process for cold-rolled steel coil sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010021751.7A CN111088422A (en) | 2020-01-09 | 2020-01-09 | Heat treatment process for cold-rolled steel coil sleeve |
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| Publication Number | Publication Date |
|---|---|
| CN111088422A true CN111088422A (en) | 2020-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010021751.7A Pending CN111088422A (en) | 2020-01-09 | 2020-01-09 | Heat treatment process for cold-rolled steel coil sleeve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117966023A (en) * | 2024-02-02 | 2024-05-03 | 衡水凯瑞橡塑制品有限公司 | Cold-rolled steel coil sleeve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11310825A (en) * | 1998-04-28 | 1999-11-09 | Nippon Steel Corp | Manufacture of work roll for cold rolling |
| CN101100704A (en) * | 2007-08-06 | 2008-01-09 | 蔡海进 | Method for manufacturing wire drawing machine drum |
| JP2011000603A (en) * | 2009-06-17 | 2011-01-06 | Kobe Steel Ltd | Method of manufacturing forged steel roll for cold rolling |
| CN102560064A (en) * | 2011-12-30 | 2012-07-11 | 中信重工机械股份有限公司 | Integral thermal treatment process for roller shell of high-pressure roller mill |
| CN105543451A (en) * | 2016-01-20 | 2016-05-04 | 中钢集团邢台机械轧辊有限公司 | Heat treatment method for inlaid backup roll sleeve |
-
2020
- 2020-01-09 CN CN202010021751.7A patent/CN111088422A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11310825A (en) * | 1998-04-28 | 1999-11-09 | Nippon Steel Corp | Manufacture of work roll for cold rolling |
| CN101100704A (en) * | 2007-08-06 | 2008-01-09 | 蔡海进 | Method for manufacturing wire drawing machine drum |
| JP2011000603A (en) * | 2009-06-17 | 2011-01-06 | Kobe Steel Ltd | Method of manufacturing forged steel roll for cold rolling |
| CN102560064A (en) * | 2011-12-30 | 2012-07-11 | 中信重工机械股份有限公司 | Integral thermal treatment process for roller shell of high-pressure roller mill |
| CN105543451A (en) * | 2016-01-20 | 2016-05-04 | 中钢集团邢台机械轧辊有限公司 | Heat treatment method for inlaid backup roll sleeve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117966023A (en) * | 2024-02-02 | 2024-05-03 | 衡水凯瑞橡塑制品有限公司 | Cold-rolled steel coil sleeve |
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