CN113462867A - Circular torsion machining process for improving mechanical property of metal material - Google Patents

Circular torsion machining process for improving mechanical property of metal material Download PDF

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Publication number
CN113462867A
CN113462867A CN202110707800.7A CN202110707800A CN113462867A CN 113462867 A CN113462867 A CN 113462867A CN 202110707800 A CN202110707800 A CN 202110707800A CN 113462867 A CN113462867 A CN 113462867A
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metal material
treatment
processing technology
workpiece
improving
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CN202110707800.7A
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Chinese (zh)
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徐向俊
戴甲洪
向超
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Yangtze Normal University
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Yangtze Normal University
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Publication of CN113462867A publication Critical patent/CN113462867A/en
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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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • 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
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/13—Modifying the physical properties of iron or steel by deformation by hot working
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/40—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using liquids, e.g. salt baths, liquid suspensions
    • C23C8/42—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using liquids, e.g. salt baths, liquid suspensions only one element being applied
    • C23C8/44—Carburising
    • 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
    • Y02P10/20—Recycling

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

The invention discloses a circular torsion processing technology for improving mechanical properties of a metal material, which comprises the following steps: step one, smelting; step two, pouring; step three, rolling; step four, heating; step five, cooling; step six, grain refinement; step seven, manufacturing; step eight, carburizing; step nine, quenching; according to the cyclic torsion processing technology for improving the mechanical property of the metal material, in the process of preparing the metal material, the blank is rolled and subjected to heat preservation and pressurization treatment, so that the grain refinement degree of the metal material is favorably improved, the cyclic torsion property in the mechanical property of the metal material is favorably improved, meanwhile, in the subsequent process of preparing the metal material, the metal material is favorably subjected to carburization treatment, the strength of the metal material is favorably improved, the phenomenon that the metal material is fractured after the cyclic torsion of the metal material is avoided, and the application range of the metal material is further enlarged.

Description

Circular torsion machining process for improving mechanical property of metal material
Technical Field
The invention relates to the technical field of metal material treatment, in particular to a circular torsion processing technology for improving the mechanical property of a metal material.
Background
Metallic materials generally refer to pure metals or alloys in industrial applications. There are more than 70 pure metals in nature, among which iron, copper, aluminum, tin, nickel, gold, silver, lead, zinc, etc. are common. The alloy is usually a material which is formed by combining two or more metals or metals and non-metals and has metal characteristics, wherein the conventional metal material is usually processed and prepared by adopting a conventional process in the preparation process, but the prepared metal material has low circulating torsion performance in the mechanical property, the metal material is easy to break in the circulating torsion process of the metal material, and the strength of the prepared metal material is reduced after the circulating torsion, so that the application range of the metal material is reduced.
Disclosure of Invention
The invention aims to provide a circular torsion processing technology for improving the mechanical property of a metal material, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a circular torsion processing technology for improving mechanical properties of a metal material comprises the following steps: step one, smelting; step two, pouring; step three, rolling; step four, heating; step five, cooling; step six, grain refinement; step seven, manufacturing; step eight, carburizing; step nine, quenching;
in the first step, raw materials for preparing the metal material are prepared, then the prepared raw materials are placed in a smelting furnace for smelting treatment to obtain a melt, stirring is carried out on the melt by using stirring equipment in the smelting process, and protection treatment is carried out by using protective gas in the stirring process;
in the second step, the melt obtained in the first step is poured into a mold for molding treatment to obtain a blank, the melt before pouring is above the liquidus line by 120-;
in the third step, the blank obtained in the second step is subjected to heating rolling treatment, the temperature of the blank in the rolling process is 600-800 ℃, and the required metal material is obtained by performing rolling treatment deformation treatment on the blank for multiple times;
in the fourth step, the metal material obtained in the third step is placed in a heating furnace for heating treatment, when the temperature of the metal material is heated to 400-500 ℃, the heated metal material is placed in heat-preservation heating equipment for heat-preservation pressurization treatment, and the step is repeated for 2-3 times in the operation process;
in the fifth step, naturally cooling the metal material subjected to pressure maintaining in the fourth step, and cleaning residues left on the surface of the metal material after the metal material is naturally cooled to normal temperature;
in the sixth step, the metal material cleaned from the residue in the fifth step is heated to Ac3Heating the metal material to austenite at 50 ℃, then preserving heat for 5-10min, then cooling the metal material after heat preservation to room temperature, and then repeating the operation in the step for 3-4 times, thereby improving the grain refinement degree of the metal material by utilizing the operation in the step;
in the seventh step, the metal material processed in the sixth step is manufactured into a required workpiece through drawing, shearing or other processes;
in the eighth step, the workpiece obtained in the seventh step is placed in a metal cleaning agent to be cleaned to remove residual dirt on the surface of the workpiece, then the cleaned workpiece is subjected to preheating treatment, then the preheated workpiece is placed in a liquid carburizing medium to be carburized, the liquid carburizing medium is a silicon carbide carburizing medium, then the workpiece placed in the liquid carburizing medium is heated to a single-phase austenite region and is subjected to heat preservation for 2-3h, and then the workpiece can be taken out to be subjected to air cooling to room temperature treatment;
in the ninth step, the workpiece cooled to room temperature in the eighth step is placed in a heating furnace for quenching treatment, then the workpiece is cooled to room temperature after the heat preservation time is reached, then the workpiece after the room temperature treatment is heated to 650-700 ℃ for tempering treatment, the tempering time is 1-1.5h, and then air cooling is carried out to the room temperature.
Preferably, in the first step, the selected shielding gas is high-purity argon.
Preferably, in the second step, the pressure selected in the extrusion casting process is 150-200MPa, and the cooling rate of cooling is 5-8 ℃/s.
Preferably, in the fourth step, the pressure for heat preservation and pressurization is 150 MPa.
Preferably, in the eighth step, the preheating temperature of the workpiece is 350-.
Preferably, in the step eight, the air cooling rate is 10-12 ℃/s.
Preferably, in the ninth step, the quenching temperature is 730-750 ℃, and the quenching heat preservation time is 2-3 h.
Compared with the prior art, the invention has the beneficial effects that: according to the cyclic torsion processing technology for improving the mechanical property of the metal material, in the process of preparing the metal material, the blank is rolled and subjected to heat preservation and pressurization, so that the grain refinement degree of the metal material is favorably improved, the cyclic torsion property in the mechanical property of the metal material is favorably improved, meanwhile, in the process of subsequently preparing the metal material, the metal material is favorably subjected to carburization treatment, the strength of the metal material is favorably improved, meanwhile, the cyclic torsion property is improved, the strength of the metal material is improved, meanwhile, the metal material is processed, the phenomenon that the metal material is fractured after the cyclic torsion of the metal material is avoided, and therefore the application range of the metal material is improved.
Drawings
FIG. 1 is a process flow diagram of the present invention.
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.
Referring to fig. 1, an embodiment of the present invention: a circular torsion processing technology for improving mechanical properties of a metal material comprises the following steps: step one, smelting; step two, pouring; step three, rolling; step four, heating; step five, cooling; step six, grain refinement; step seven, manufacturing; step eight, carburizing; step nine, quenching;
in the first step, firstly, raw materials for preparing the metal material are prepared, then the prepared raw materials are placed in a smelting furnace for smelting treatment to obtain a melt, stirring is carried out on the melt by using stirring equipment in the smelting process, protective treatment is carried out by using protective gas in the stirring process, and the selected protective gas is high-purity argon;
in the second step, the melt obtained in the first step is poured into a mold for molding treatment to obtain a blank, the melt before pouring is above 120 DEG-180 DEG.C of a liquidus line, the melt can be extruded and cast when being completely poured into the mold, the melt can be cooled after extrusion, the pressure selected in the extrusion and casting process is 150 DEG-200 MPa, and the cooling rate is 5-8 DEG/s;
in the third step, the blank obtained in the second step is subjected to heating rolling treatment, the temperature of the blank in the rolling process is 600-800 ℃, and the required metal material is obtained by performing rolling treatment deformation treatment on the blank for multiple times;
in the fourth step, the metal material obtained in the third step is placed in a heating furnace for heating treatment, when the temperature of the metal material is heated to 400-500 ℃, the heated metal material is placed in heat-preservation heating equipment for heat-preservation pressurization treatment, the pressure of the heat-preservation pressurization is 150MPa, and the step is repeated for 2-3 times in the operation process;
in the fifth step, naturally cooling the metal material subjected to pressure maintaining in the fourth step, and cleaning residues left on the surface of the metal material after the metal material is naturally cooled to normal temperature;
wherein is atIn the sixth step, the metal material cleaned from the residue in the fifth step is heated to Ac3Heating the metal material to austenite at 50 ℃, then preserving heat for 5-10min, then cooling the metal material after heat preservation to room temperature, and then repeating the operation in the step for 3-4 times, thereby improving the grain refinement degree of the metal material by utilizing the operation in the step;
in the seventh step, the metal material processed in the sixth step is manufactured into a required workpiece through drawing, shearing or other processes;
placing the workpiece obtained in the step seven in a metal cleaning agent for cleaning to remove dirt remained on the surface of the workpiece, then carrying out preheating treatment on the cleaned workpiece, wherein the preheating temperature of the workpiece is 350-400 ℃, the preheating time is 20-30min, then placing the preheated workpiece in a liquid carburizing medium for carburizing treatment, the liquid carburizing medium is selected from a silicon carbide carburizing medium, then heating the workpiece placed in the liquid carburizing medium to a single-phase austenite region, carrying out heat preservation for 2-3h, then taking out the workpiece for air cooling to room temperature treatment, and the air cooling rate is 10-12 ℃/s;
in the ninth step, the workpiece cooled to room temperature in the eighth step is placed in a heating furnace for quenching treatment, the quenching temperature is 730-.
Based on the above, the invention has the advantages that when the metal material is used, the metal material is rolled and subjected to heat preservation and pressurization for multiple times in the process of preparing the metal material, so that the grain refinement degree of the metal material is favorably improved, the cyclic torsion performance in the mechanical property of the metal material is favorably improved, the metal material is simultaneously subjected to carburization treatment, the strength of the metal material is favorably improved, the cyclic torsion performance and the strength of the metal material are improved, the metal material is simultaneously subjected to processing treatment, the phenomenon that the metal material is fractured after the cyclic torsion of the metal material is avoided, and the application range of the metal material is further improved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (7)

1. A circular torsion processing technology for improving mechanical properties of a metal material comprises the following steps: step one, smelting; step two, pouring; step three, rolling; step four, heating; step five, cooling; step six, grain refinement; step seven, manufacturing; step eight, carburizing; step nine, quenching; the method is characterized in that:
in the first step, raw materials for preparing the metal material are prepared, then the prepared raw materials are placed in a smelting furnace for smelting treatment to obtain a melt, stirring is carried out on the melt by using stirring equipment in the smelting process, and protection treatment is carried out by using protective gas in the stirring process;
in the second step, the melt obtained in the first step is poured into a mold for molding treatment to obtain a blank, the melt before pouring is above the liquidus line by 120-;
in the third step, the blank obtained in the second step is subjected to heating rolling treatment, the temperature of the blank in the rolling process is 600-800 ℃, and the required metal material is obtained by performing rolling treatment deformation treatment on the blank for multiple times;
in the fourth step, the metal material obtained in the third step is placed in a heating furnace for heating treatment, when the temperature of the metal material is heated to 400-500 ℃, the heated metal material is placed in heat-preservation heating equipment for heat-preservation pressurization treatment, and the step is repeated for 2-3 times in the operation process;
in the fifth step, naturally cooling the metal material subjected to pressure maintaining in the fourth step, and cleaning residues left on the surface of the metal material after the metal material is naturally cooled to normal temperature;
in the sixth step, the metal material cleaned from the residue in the fifth step is heated to Ac3Heating the metal material to austenite at 50 ℃, then preserving heat for 5-10min, then cooling the metal material after heat preservation to room temperature, and then repeating the operation in the step for 3-4 times, thereby improving the grain refinement degree of the metal material by utilizing the operation in the step;
in the seventh step, the metal material processed in the sixth step is manufactured into a required workpiece through drawing, shearing or other processes;
in the eighth step, the workpiece obtained in the seventh step is placed in a metal cleaning agent to be cleaned to remove residual dirt on the surface of the workpiece, then the cleaned workpiece is subjected to preheating treatment, then the preheated workpiece is placed in a liquid carburizing medium to be carburized, the liquid carburizing medium is a silicon carbide carburizing medium, then the workpiece placed in the liquid carburizing medium is heated to a single-phase austenite region and is subjected to heat preservation for 2-3h, and then the workpiece can be taken out to be subjected to air cooling to room temperature treatment;
in the ninth step, the workpiece cooled to room temperature in the eighth step is placed in a heating furnace for quenching treatment, then the workpiece is cooled to room temperature after the heat preservation time is reached, then the workpiece after the room temperature treatment is heated to 650-700 ℃ for tempering treatment, the tempering time is 1-1.5h, and then air cooling is carried out to the room temperature.
2. The cyclic torsion processing technology for improving the mechanical property of the metal material according to claim 1, wherein the cyclic torsion processing technology comprises the following steps: in the first step, the selected protective gas is high-purity argon.
3. The cyclic torsion processing technology for improving the mechanical property of the metal material according to claim 1, wherein the cyclic torsion processing technology comprises the following steps: in the second step, the pressure selected in the extrusion casting process is 150-.
4. The cyclic torsion processing technology for improving the mechanical property of the metal material according to claim 1, wherein the cyclic torsion processing technology comprises the following steps: in the fourth step, the pressure of heat preservation and pressurization is 150 MPa.
5. The cyclic torsion processing technology for improving the mechanical property of the metal material according to claim 1, wherein the cyclic torsion processing technology comprises the following steps: in the step eight, the preheating temperature of the workpiece is 350-400 ℃, and the preheating time is 20-30 min.
6. The cyclic torsion processing technology for improving the mechanical property of the metal material according to claim 1, wherein the cyclic torsion processing technology comprises the following steps: in the step eight, the air cooling rate is 10-12 ℃/s.
7. The cyclic torsion processing technology for improving the mechanical property of the metal material according to claim 1, wherein the cyclic torsion processing technology comprises the following steps: in the ninth step, the quenching temperature is 730-.
CN202110707800.7A 2021-06-25 2021-06-25 Circular torsion machining process for improving mechanical property of metal material Withdrawn CN113462867A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110707800.7A CN113462867A (en) 2021-06-25 2021-06-25 Circular torsion machining process for improving mechanical property of metal material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110707800.7A CN113462867A (en) 2021-06-25 2021-06-25 Circular torsion machining process for improving mechanical property of metal material

Publications (1)

Publication Number Publication Date
CN113462867A true CN113462867A (en) 2021-10-01

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Application publication date: 20211001