CN111118260A - GCr15 heat treatment process - Google Patents
GCr15 heat treatment process Download PDFInfo
- Publication number
- CN111118260A CN111118260A CN202010044608.XA CN202010044608A CN111118260A CN 111118260 A CN111118260 A CN 111118260A CN 202010044608 A CN202010044608 A CN 202010044608A CN 111118260 A CN111118260 A CN 111118260A
- Authority
- CN
- China
- Prior art keywords
- heating
- temperature
- tempering
- austenite
- heat treatment
- Prior art date
- 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.)
- Pending
Links
Images
Classifications
-
- 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
- C21D1/25—Hardening, combined with annealing between 300 degrees Celsius and 600 degrees Celsius, i.e. heat refining ("Vergüten")
-
- 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
- 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
- C21D11/00—Process control or regulation for heat treatments
- C21D11/005—Process control or regulation for heat treatments for cooling
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/002—Heat treatment of ferrous alloys containing Cr
-
- 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 application relates to the technical field of GCr15 heat treatment processes, in particular to a GCr15 heat treatment process for a steel piece made of GCr15, wherein the GCr15 heat treatment process comprises the following steps: step 100, heating a steel product to an austenite temperature through induction heating equipment to perform quenching and heating treatment; 200, quenching and cooling the steel product subjected to quenching and heating treatment by induction cooling equipment; 300, tempering and heating the quenched and cooled steel piece by induction heating equipment; and 400, naturally cooling the tempered and heated steel part. The steel parts are subjected to single induction heating and single temperature control cooling processes, and the multi-section quenching heating and tempering heating treatment is adopted in the treatment processes, so that the produced steel parts are small in hardness dispersion difference, small in deformation, small in turning amount, and small in energy consumption while the efficiency is ensured.
Description
Technical Field
The application relates to the technical field of heat treatment processes of GCr15, in particular to a GCr15 heat treatment process.
Background
At present, the material GCr15 is mainly developed for the high-end precision machine tool market, heat treatment is needed before the material is processed and manufactured into the high-precision machine tool roller screw, the existing heat treatment heating mode and cooling mode need to be conducted, the production process needs to be conducted through multiple times of stress relief tempering and multiple times of straightening treatment of a box type heating furnace and a well type heating furnace, the common heat treatment method needs 6-8 times of stress relief tempering to meet the production of the high-precision roller screw, and the problems that after heat treatment, hardness dispersion is large, metallographic structures are uneven, deformation is difficult to control and the like are caused, namely the quality of heat treatment is unstable.
Disclosure of Invention
The application aims to provide a GCr15 heat treatment process, which solves the technical problems of large hardness dispersion, non-uniform metallographic structure, difficult control of deformation and the like of GCr15 subjected to common heat treatment in the prior art, namely unstable heat treatment quality to a certain extent.
The application provides a GCr15 heat treatment process, which is used for a steel part manufactured by 32CrB4, and the GCr15 heat treatment process comprises the following steps:
200, quenching and cooling the steel product subjected to quenching and heating treatment by induction cooling equipment;
300, tempering and heating the quenched and cooled steel piece by the induction heating equipment;
and 400, naturally cooling the tempered and heated steel part.
In the above technical solution, step 100 further includes:
and sequentially passing the steel products through a plurality of austenite heating zones by the induction heating equipment to carry out quenching heating treatment.
In any of the above technical solutions, further, the plurality of austenite heating regions includes a first austenite heating region, a second austenite heating region, a third austenite heating region, a fourth austenite heating region, and a fifth austenite heating region;
wherein the temperature of the first austenite heating zone is 760-780 ℃; the temperature of the second austenite heating zone is 840-860 ℃; the temperature of the third austenite heating zone is 910-920 ℃; the temperature of the fourth austenite heating zone is 910-920 ℃; the temperature of the fifth austenite heating zone is 910-920 ℃.
In any of the above technical solutions, further, the step 300 includes:
and the steel products after quenching and cooling are sequentially subjected to tempering and heating treatment through a plurality of tempering heating sections by the induction heating equipment.
In any of the above technical solutions, further, the plurality of tempering heating sections include a first tempering heating section, a second tempering heating section, a third tempering heating section, a fourth tempering heating section, and a fifth tempering heating section;
wherein the temperature of the first tempering heating section is 460-480 ℃; the temperature of the second tempering heating section is 650-670 ℃; the temperature of the third tempering heating section is 700-710 ℃; the temperature of the fourth tempering heating section is 710-720 ℃; the temperature of the fifth tempering heating section is 710-720 ℃.
In any one of the above technical solutions, further, in steps 100 to 400, the number of the steel pieces is single.
In any of the above technical solutions, further, the step 400 includes:
the steel material after the tempering heat treatment is naturally cooled on an industrial cooling bed, and the steel material is in a state of rotating around its own axis.
In any of the above technical solutions, further, in step 100 and step 300, the conveying speed of the steel piece is controlled to be 3-6 m/min.
In any of the above embodiments, further, in both the step 100 and the step 300, the steel member is in a state of rotating about the axis thereof.
In any of the above technical solutions, further, in the step 200, the mass concentration of the quenching medium is 5 to 7%.
In any of the above technical solutions, further, in the step 200, the quenching cooling temperature is controlled at 160 ℃ and 140 ℃.
Compared with the prior art, the beneficial effect of this application is:
the application provides a GCr15 heat treatment process, adopt induction heating to reach accuse temperature cooling process in addition to steel spare, the whole periphery of steel spare all is in the same heating or refrigerated environment, avoided traditional heat treatment furnace only to the one side or the two-sided heating of steel spare promptly, perhaps the heating source is apart from the different problem of distance of steel spare, therefore, the metallographic structure and the hardness of the steel spare that adopt this technology to produce are even, the hardness is scattered poor little, it is little to warp, follow-up alignment correction that does not need is handled, raw and other materials reserve the size volume little, the turning volume is little, cost and waste have been reduced for follow-up processing type enterprise.
Drawings
In order to more clearly illustrate the detailed description of the present application or the technical solutions in the prior art, the drawings needed to be used in the detailed description of the present application or the prior art description will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic flow chart of the heat treatment process of GCr15 provided in the examples of the present application;
FIG. 2 is a schematic flow chart of a GCr15 heat treatment process provided by the embodiments of the present application;
fig. 3 is a schematic diagram of a C curve of GCr15 provided in the embodiment of the present application.
Detailed Description
The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments.
The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application.
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 application.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The GCr15 heat treatment process according to some embodiments of the present application is described below with reference to fig. 1-3.
Referring to fig. 1, an embodiment of the present application provides a GCr15 heat treatment process, i.e., an induction hardening and tempering heat treatment process of GCr15, including the following steps:
step 101, heating a steel product to an austenite temperature through induction heating equipment to perform quenching and heating treatment;
103, tempering and heating the quenched and cooled steel piece by induction heating equipment;
and 104, naturally cooling the tempered and heated steel part.
The steel piece is subjected to the induction heating and temperature control cooling process, and the whole periphery of the steel piece is in the same heating or cooling environment, so that the heat treatment of the steel piece is more uniform, and the problem that the traditional heat treatment furnace only heats one surface or two surfaces of the steel piece or the distance between a heating source and each surface of the steel piece is different is solved. Therefore, the steel piece produced by the heat treatment process has uniform metallographic structure, uniform hardness, small hardness dispersion difference and small deformation, so that the subsequent straightening and correction treatment is not needed, the reserved size of raw materials is small, the turning amount is small, and the workload of subsequent machining enterprises is reduced.
In the process, the single steel piece is subjected to corresponding heat treatment, namely, the single steel piece is placed on the conveying belt and is subjected to heat treatment sequentially through corresponding heat treatment equipment, so that the periphery of the single steel piece is heated or cooled more uniformly, the problems that a plurality of steel bars are stacked in a heating furnace for heat treatment, heating or cooling is uneven and organization and performance are uneven are caused are avoided.
Controlling the temperature of the steel piece to be 140-160 ℃ by using induction cooling equipment, preferably controlling the temperature of the steel piece to be 150 ℃ by using the induction cooling equipment, and detecting the hardness of the quenched steel piece by using a Brinell hardness tester to be more than or equal to 50HRC after treatment; after the steel piece is naturally cooled, the hardness of the steel piece is detected by a Vickers hardness tester and is in the range of 24-26HRC, namely, the hardness after heat treatment is accurately controlled, so that the hardness of the steel piece is in a certain range.
Wherein optionally, in step 100 and step 300, the conveying speed of the steel piece in the induction heating equipment is controlled to be 3-6 m/min.
Optionally, the induction heating device is an annular heating sensor, the induction cooling device is a cooler, the quenching cooling water sprayer comprises an annular body and a sprinkler head, the annular body is provided with water spray nozzles and matched with the sprinkler head, the sprinkler head is connected with the water tank, the sprinkler head can inject high-pressure water into the water spray nozzles, and then the water spray nozzles arranged on the inner wall of the annular body spray water to cool the steel piece in a direction of 360 degrees, so that the quenching cooling is free of blind areas, soft points and soft zones. The extension line of the axis of the water jet passes through the axis of the steel piece, and ensures that the sprayed cooling water can cool the steel piece.
In addition, the single steel piece is subjected to water spraying cooling treatment in the 360-degree direction, so that the metallographic structure, the hardness and the mechanical property of the single steel piece are uniform, and the scattering difference is small.
In this embodiment, in step 200, the composition of the quench media includes: the sodium chloride, sulfate, carbonate, total nitrogen, total calcium, magnesium and iron, water insoluble substances and water, wherein the ratio (mass fraction percent) of the components is as follows: more than or equal to 98 percent of sodium chloride, less than or equal to 0.05 percent of sulfate, less than or equal to 0.05 percent of carbonate, less than or equal to 0.05 percent of total nitrogen, less than or equal to 0.10 percent of total calcium, magnesium and iron, less than or equal to 0.10 percent of water insoluble substance, and less than or equal to 1.00 percent of water; the concentration of the quenching medium is controlled to be 5-7%.
In this embodiment, step 100 comprises: sequentially passing the steel product through a first austenite heating zone, a second austenite heating zone, a third austenite heating zone, a fourth austenite heating zone and a fifth austenite heating zone by using induction heating equipment to perform quenching heating treatment;
wherein, referring to fig. 3, the temperature of the first austenite heating zone is 760-780 ℃; the temperature of the second austenite heating zone is 840-860 ℃; the temperature of the third austenite heating zone is 910-920 ℃; the temperature of the fourth austenite heating zone is 910-920 ℃; the temperature of the fifth austenite heating zone is 910-920 ℃.
The structure of the steel piece is quickly transformed into an austenite structure by quickly raising the temperature to the austenitizing starting transformation temperature, namely the temperature above the critical point Ac1, namely the first austenite heating zone, through the induction heating equipment, the subsequent temperature rise is also quicker, the steel piece is completely austenitized through the second heating zone, and then the steel piece is subjected to heat preservation treatment through the three austenite heating zones in sequence, so that the austenite is homogenized.
Wherein, the steel spare directly is in the environment that the temperature is greater than critical point temperature Ac1 behind the induction heating equipment and heats, it is faster to heat up, the efficiency of thermal treatment has been promoted, the productivity ratio is improved, furthermore, the sectional heating, can set different temperature sections as required, avoided whole processing interval must keep the state at same high temperature, but set different temperature sections as actual need, when guaranteeing the heating efficiency promptly, the energy consumption has been saved, and the burden of induction heating equipment has been alleviateed, avoided needing in the past wholly to reach certain appointed higher heat treatment temperature, and cause heating power too big, probably cause the problem of equipment damage.
Of course, not only the above austenitic heating zones are included, but other heating sections may also be included.
In this embodiment, step 300 includes: the quenched and cooled steel products sequentially pass through a first tempering heating section, a second tempering heating section, a third tempering heating section, a fourth tempering heating section and a fifth tempering heating section through induction heating equipment to be subjected to tempering heating treatment;
wherein, referring to fig. 3, the temperature of the first tempering heating section is 460-; the temperature of the second tempering heating section is 650-670 ℃; the temperature of the third tempering heating section is 700-710 ℃; the temperature of the fourth tempering heating section is 710-720 ℃; the temperature of the fifth tempering heating section is 710-720 ℃.
The temperature of two preceding tempering heating sections becomes the situation that risees gradually, and the temperature is higher, and release stress is more complete, and softening effect is better, and the moulding and the toughness of steel spare are better promptly, and tempering effect is better, and in addition, the effect of even tissue is played to three tempering sections in back for the metallographic structure and the hardness of steel spare are even, and mechanical properties is unanimous, and it is little to warp, follow-up alignment correction processing that does not need.
The heat treatment heating process also has the same effects as the quenching heating process, and the effects are as follows: the steel piece is directly heated in the environment with the temperature lower than the critical point temperature Ac1 after entering the induction heating equipment, namely is rapidly subjected to heat treatment in the specified temperature environment, so that the heat treatment efficiency is improved, and the production rate is improved.
In addition, the sectional heating can be set into different temperature sections according to the needs, so that the condition that the whole processing area must be kept at the same high temperature is avoided, and the temperature sections are set into different temperature sections according to the actual needs, so that the heating efficiency is ensured, the energy consumption is saved, the burden of the induction heating equipment is reduced, and the problem that the heating power is too high and the equipment is possibly damaged due to the fact that the whole temperature needs to reach a certain specified higher heat treatment temperature in the past is avoided.
Of course, the tempering heating section is not limited to the above, and other tempering heating sections can be included.
In this embodiment, step 400 includes: the steel material after the tempering heat treatment is naturally cooled on an industrial cooling bed, and the steel material is in a state of rotating around its own axis. Further, in both step 100 and step 300, the steel member is rotated about its own axis when heated in the induction heating apparatus.
When carrying out quenching heating, tempering heating and natural cooling to steel spare and handle, the steel spare is all in the rotation state, and is rotatory at the uniform velocity through controlling steel spare, and then has improved the heating or radiating homogeneity of steel spare, improves the treatment effect of steel spare.
Wherein optionally the rotational speed of the steel piece is 90-120 r/min.
In summary, referring to fig. 2, the GCr15 heat treatment process includes the following detailed steps:
controlling the conveying speed of the steel piece to be 3-6m/min, wherein the steel piece is always in a state of rotating around the axis of the steel piece in the conveying process;
controlling the conveying speed of the steel piece to be 3-6m/min, wherein the steel piece is always in a state of rotating around the axis of the steel piece in the conveying process;
controlling the conveying speed of the steel piece to be 3-6m/min, wherein the steel piece is always in a state of rotating around the axis of the steel piece in the conveying process;
and 204, naturally cooling the tempered and heated steel part on an industrial cooling bed, wherein the steel part is in a state of rotating by taking the axis of the steel part as the center.
Specifically, the product specification is:
steel bar (unit cm x mm); the first austenite heating zone has a temperature of 770 deg.C, the second austenite heating zone has a temperature of 850 deg.C, and the first austenite heating zoneAt a temperature of 915 ℃, a temperature of 915 ℃ in the first austenite heating zone and a heating temperature of 915 ℃ in the first austenite heating zone; the temperature of the first tempering heating section is 470 ℃, the temperature of the second tempering heating section is 660 ℃, the temperature of the third tempering heating section is 705 ℃, the temperature of the fourth tempering heating section is 715 ℃ and the temperature of the fifth tempering heating section is 715 ℃; by matching with the heat treatment data, after the steel bar is treated by the heat treatment process, the surface hardness of the steel bar is 23-23.5HRC, the hardness of the position which is away from 1/2R of the core part of the steel bar is 24-25HRC, and the hardness of the core part is 24-24.5 HRC.
The product specification is:
steel bar (unit cm x mm); the temperature of the first austenite heating zone is 760 ℃, the temperature of the second austenite heating zone is 840 ℃, the temperature of the first austenite heating zone is 910 ℃, and the heating temperature of the first austenite heating zone is 910 ℃; the temperature of the first tempering heating section is 460 ℃, the temperature of the second tempering heating section is 650 ℃, the temperature of the third tempering heating section is 700 ℃, the temperature of the fourth tempering heating section is 710 ℃ and the temperature of the fifth tempering heating section is 710 ℃; by matching with the heat treatment data, after the steel bar is treated by the heat treatment process, the surface hardness of the steel bar is 23.2-23.8HRC, the hardness of the steel bar at the position which is away from 1/2R of the core part of the steel bar is 24-25HRC, and the hardness of the core part is 24-25 HRC.
The product specification is:
steel bar (unit cm x mm); the temperature of the first austenite heating zone is 780 ℃, the temperature of the second austenite heating zone is 860 ℃, the temperature of the first austenite heating zone is 920 ℃, and the heating temperature of the first austenite heating zone is 920 ℃; the temperature of the first tempering heating section is 480 ℃, the temperature of the second tempering heating section is 670 ℃, the temperature of the third tempering heating section is 710 ℃, the temperature of the fourth tempering heating section is 720 ℃ and the temperature of the fifth tempering heating section is 72 DEG C0 ℃; by matching with the heat treatment data, after the steel bar is treated by the heat treatment process, the surface hardness of the steel bar is 22.5-23HRC, the hardness of the position which is away from 1/2R of the core part of the steel bar is 23.5-24.5HRC, and the hardness of the core part is 23.5-24.5 HRC.
Therefore, the steel parts produced by the process have uniform hardness, small hardness dispersion difference and small deformation, do not need straightening and correcting treatment subsequently, have small reserved size of raw materials and small turning amount, and reduce cost and waste for subsequent processing enterprises. Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A GCr15 heat treatment process for a steel piece made from GCr15, comprising the steps of:
step 100, heating the steel piece to an austenite temperature through induction heating equipment to perform quenching and heating treatment;
200, quenching and cooling the steel product subjected to quenching and heating treatment by using induction cooling equipment;
300, tempering and heating the steel product after quenching and cooling through the induction heating equipment;
and 400, naturally cooling the tempered and heated steel piece.
2. The GCr15 heat treatment process of claim 1, wherein the step 100 comprises:
and sequentially passing the steel piece through a plurality of austenite heating zones by the induction heating equipment to carry out quenching heating treatment.
3. The GCr15 heat treatment process of claim 2, wherein the plurality of austenite heating zones comprises a first austenite heating zone, a second austenite heating zone, a third austenite heating zone, a fourth austenite heating zone, and a fifth austenite heating zone;
wherein the temperature of the first austenite heating zone is 760-780 ℃; the temperature of the second austenite heating zone is 840-860 ℃; the temperature of the third austenite heating zone is 910-920 ℃; the temperature of the fourth austenite heating zone is 910-920 ℃; the temperature of the fifth austenite heating zone is 910-920 ℃.
4. The GCr15 heat treatment process of claim 1, wherein the step 300 comprises:
and the steel products after quenching and cooling are sequentially subjected to tempering and heating treatment through a plurality of tempering heating sections by the induction heating equipment.
5. The GCr15 thermal treatment process of claim 4, wherein the plurality of tempering heating sections comprises a first tempering heating section, a second tempering heating section, a third tempering heating section, a fourth tempering heating section, and a fifth tempering heating section;
wherein the temperature of the first tempering heating section is 460-480 ℃; the temperature of the second tempering heating section is 650-670 ℃; the temperature of the third tempering heating section is 700-710 ℃; the temperature of the fourth tempering heating section is 710-720 ℃; the temperature of the fifth tempering heating section is 710-720 ℃.
6. The GCr15 heat treatment process of claim 1, wherein the number of steel pieces in the steps 100 to 400 is single.
7. The GCr15 heat treatment process of claim 1, wherein the step 400 comprises:
the steel material after the tempering heat treatment is naturally cooled on an industrial cooling bed, and the steel material is in a state of rotating around its own axis.
8. The GCr15 heat treatment process according to claim 1, wherein the conveying speed of the steel piece in the induction heating device is controlled to be 3-6m/min in both the step 100 and the step 300.
9. The GCr15 heat treatment process according to claim 1, wherein the steel piece is rotated around its axis during the heating in the induction heating apparatus in both the step 100 and the step 300.
10. The GCr15 heat treatment process according to any one of claims 1 to 9, wherein the quenching cooling temperature in the step 200 is controlled to 140-160 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010044608.XA CN111118260A (en) | 2020-01-15 | 2020-01-15 | GCr15 heat treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010044608.XA CN111118260A (en) | 2020-01-15 | 2020-01-15 | GCr15 heat treatment process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111118260A true CN111118260A (en) | 2020-05-08 |
Family
ID=70491010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010044608.XA Pending CN111118260A (en) | 2020-01-15 | 2020-01-15 | GCr15 heat treatment process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111118260A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103993230A (en) * | 2014-01-14 | 2014-08-20 | 山东博特精工股份有限公司 | Steel material and processing technology for ball screw |
| CN104831023A (en) * | 2015-05-21 | 2015-08-12 | 衡阳风顺车桥有限公司 | Thermal treatment technology for ball screws of machine tool |
| CN107586934A (en) * | 2017-09-21 | 2018-01-16 | 江苏南钢通恒特材科技有限公司 | Big rod senses hardening and tempering process and big rod sensing tempering product line |
| CN109055670A (en) * | 2018-09-11 | 2018-12-21 | 江苏南钢通恒特材科技有限公司 | SCM435H incudes hardening and tempering process |
-
2020
- 2020-01-15 CN CN202010044608.XA patent/CN111118260A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103993230A (en) * | 2014-01-14 | 2014-08-20 | 山东博特精工股份有限公司 | Steel material and processing technology for ball screw |
| CN104831023A (en) * | 2015-05-21 | 2015-08-12 | 衡阳风顺车桥有限公司 | Thermal treatment technology for ball screws of machine tool |
| CN107586934A (en) * | 2017-09-21 | 2018-01-16 | 江苏南钢通恒特材科技有限公司 | Big rod senses hardening and tempering process and big rod sensing tempering product line |
| CN109055670A (en) * | 2018-09-11 | 2018-12-21 | 江苏南钢通恒特材科技有限公司 | SCM435H incudes hardening and tempering process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6023563B2 (en) | Roll forming method and roll forming apparatus | |
| CN103540716A (en) | Processing method of tread thermal treatment for caterpillar link | |
| JP2011122211A (en) | Mist cooling apparatus, heat treatment apparatus and mist cooling method | |
| JP2016074983A (en) | Device for individual quench hardening of equipment components | |
| KR20170012224A (en) | Method and device for producing a steel strip | |
| US5268040A (en) | Method for steel surface hardening treatment and an apparatus therefor | |
| CN108130403A (en) | A kind of impewdance matching processing method of Cr12 rolls | |
| CN104357643B (en) | Net carbide Technology for Heating Processing is eliminated after a kind of roll forging | |
| CN105714027A (en) | Heat treatment process for hardening and tempering of 45 steel | |
| CN102808077A (en) | Thin-wall gear ring type part quenching method for keeping accuracy level | |
| CN111118260A (en) | GCr15 heat treatment process | |
| CN102719626B (en) | Steel pipe and on-line quenching method thereof | |
| TWI616537B (en) | Method of heat treatment for metal | |
| CN202705418U (en) | Inductive quenching processing device of Cr12MoV roller | |
| CN110983001A (en) | 32CrB4 induction hardening and tempering process | |
| CN103882206B (en) | Engineering machinery use the integral quenching method of wheel body | |
| CN105821181B (en) | A kind of heat treatment method of metal | |
| CN208346233U (en) | The quenching of bands for band teeth portion while cold coalignment | |
| CN103343213A (en) | Heat treatment method for thin-walled gear ring | |
| JPS63274713A (en) | Heat treatment method for bar-like parts | |
| CN106854691A (en) | Steel part Technology for Heating Processing, steel part forging method and annealing device using the Technology for Heating Processing | |
| CN108424999A (en) | A kind of heat treatment process of shallow-tank separator driving chain parts | |
| CN106011397B (en) | 42CrMo bars control water quenching heat-treatment technology method | |
| CN104164543A (en) | Quenching method for hot work die steel | |
| CN113416830B (en) | Flame quenching process for wheel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200508 |