CN113351676A - Technique for controlling organization performance and size uniformity of wide-width integrally-extruded wallboard and board - Google Patents
Technique for controlling organization performance and size uniformity of wide-width integrally-extruded wallboard and board Download PDFInfo
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- CN113351676A CN113351676A CN202110641846.3A CN202110641846A CN113351676A CN 113351676 A CN113351676 A CN 113351676A CN 202110641846 A CN202110641846 A CN 202110641846A CN 113351676 A CN113351676 A CN 113351676A
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- 238000000034 method Methods 0.000 title claims abstract description 44
- 230000008520 organization Effects 0.000 title description 2
- 238000010438 heat treatment Methods 0.000 claims abstract description 36
- 238000001125 extrusion Methods 0.000 claims abstract description 30
- 238000005242 forging Methods 0.000 claims abstract description 28
- 238000004321 preservation Methods 0.000 claims abstract description 28
- 238000003723 Smelting Methods 0.000 claims abstract description 12
- 230000006835 compression Effects 0.000 claims abstract description 11
- 238000007906 compression Methods 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims description 51
- 239000011521 glass Substances 0.000 claims description 40
- 238000003825 pressing Methods 0.000 claims description 28
- 239000000843 powder Substances 0.000 claims description 15
- 238000005496 tempering Methods 0.000 claims description 12
- 239000000956 alloy Substances 0.000 claims description 10
- 229910045601 alloy Inorganic materials 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 10
- 238000000576 coating method Methods 0.000 claims description 10
- 238000005516 engineering process Methods 0.000 claims description 10
- 230000001050 lubricating effect Effects 0.000 claims description 10
- 238000010791 quenching Methods 0.000 claims description 9
- 230000000171 quenching effect Effects 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000000137 annealing Methods 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 4
- 238000007670 refining Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims 7
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/02—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J3/00—Lubricating during forging or pressing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/002—Hybrid process, e.g. forging following casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
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- 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
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
-
- 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
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
- C22F1/18—High-melting or refractory metals or alloys based thereon
- C22F1/183—High-melting or refractory metals or alloys based thereon of titanium or alloys based thereon
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- Mechanical Engineering (AREA)
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- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
- Forging (AREA)
Abstract
The invention discloses a technique for controlling the tissue performance and the size uniformity of a wide-width integrally-extruded wallboard and a board, in particular to the technical field of extrusion deformation, the invention carries out smelting on the board before the board is extruded, and processes the blank of the board through compression, drawing and forging processing techniques, then the temperature is controlled to carry out the remelting and the heat preservation of the plate blank so as to improve the structure performance and the size uniformity of the plate blank, finally the obtained plate is subjected to gradient heating, meanwhile, the temperature near the film outlet hole is detected and adjusted, so that the contact position of the section bar and the film outlet hole can be always kept in a temperature range, so that the invention can improve the structure performance and the size uniformity of the wallboard before the wallboard is extruded, and can also keep the temperature of the contact position of the wall plate and the film outlet hole in the process of extruding the wall plate, thereby avoiding the negative influence of the temperature change of the wall plate on the extrusion of the wall plate in the extrusion process.
Description
Technical Field
The invention relates to the technical field of extrusion deformation, in particular to a technology for controlling the structure performance and the size uniformity of a wide-width integrally-extruded wallboard and a board.
Background
As a low-cost, non-cutting processing technique with high efficiency, high quality and low consumption, the extrusion technology has become an extremely important means for metal plastic forming in the sectors of machinery, automobiles, aerospace, aviation, war industry, electrical appliances and the like, and the wallboard extrusion technology in the prior art has some problems: for example, the structure performance of the wallboard cannot be improved before the wallboard is extruded, the size uniformity of the wallboard is not ideal enough after the wallboard is extruded, and in the extruding process, the temperature of the wallboard is reduced along with the time, so that the temperature change easily influences the extruding quality of the wallboard in the whole extruding process, and therefore, the research on the control technology for controlling the structure performance and the size uniformity of the wide integral extruded wallboard and the board has important significance for solving the problems.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a technology for controlling the structure performance and the size uniformity of a wide-width integrally-extruded wallboard and a board, and the technical problems to be solved by the invention are as follows: there are also problems with the prior art wallboard extrusion techniques: for example, the structural properties of the wallboard cannot be improved before the wallboard is extruded, the size uniformity of the wallboard is not ideal after the wallboard is extruded, and the temperature of the wallboard is reduced along with the time in the extruding process, so that the temperature change in the whole extruding process easily influences the extruding quality of the wallboard.
In order to achieve the purpose, the invention provides the following technical scheme: the technology for controlling the tissue performance and the size uniformity of the wide-width integrally-extruded wallboard and the plate comprises the following steps of:
step one, selecting a TA15 alloy plate as a blank, smelting according to a conventional process, heating a treatment furnace at the same time, preheating, placing the treated blank in a treatment furnace with the temperature of 1000-1200 ℃ for uniform tissue treatment after smelting, preserving heat for 18-24h at the temperature, slowly cooling, heating to the temperature of 1200-1300 ℃ for forging, firstly performing 45-degree angle pressing twice, then respectively performing compression once in the directions of X, Y and Z three axes, performing five-time elongation treatment after compression is completed, repeatedly folding and forging the blank after each elongation, performing 45-degree angle pressing twice after treatment, returning to the furnace for heat preservation, controlling the temperature at 950-1000 ℃, controlling the heat preservation time at 3-5h, and then repeatedly compressing and preserving heat, Drawing and forging, wherein the final forging temperature is more than or equal to 750 ℃, and obtaining the pretreated section.
And step two, the obtained pretreated section is returned to the furnace again for heat preservation, the temperature is reduced by 100-180 ℃, the heat preservation time is unchanged, then cooling is carried out, annealing is carried out at 850-900 ℃, then a cover type resistance heating furnace is adopted for heating to 1000-1100 ℃ for austenitizing, heat preservation is carried out for 6-12h, then quenching is carried out, then first tempering is carried out at 550-600 ℃, then second tempering is carried out at 600-650 ℃, the temperature rise speed is also controlled within the range of 60-100 ℃/h during tempering, the heat preservation time is controlled within 8-14h, the structure is refined through double refining treatment, the size of carbide particles is controlled, and the structure performance and the size uniformity are improved.
Step three, carrying out gradient heating on the section obtained in the step two, then adjusting the temperature range of the film outlet hole of the section to 750-fold 850 ℃, inputting the section from the lower end of the section to the film outlet hole for extrusion, simultaneously detecting the temperature near the film outlet hole, carrying out cooling treatment by adopting air cooling or water cooling when the temperature near the film outlet hole is more than 850 ℃, and carrying out heating treatment on the section by using a heating device when the temperature near the film outlet hole is less than 750 ℃, so that the contact position of the section and the film outlet hole can be always kept between 750-fold 850 ℃, and extruding the cylindrical section.
And fourthly, after the cylindrical profile is extruded, carrying out physical treatment on the cylindrical profile by utilizing an involute principle to enable the cylindrical profile to be unfolded, then carrying out finishing treatment on the cylindrical profile, then extruding the cylindrical profile by utilizing the rest heat by using two layers of rollers to enable the cylindrical profile to be uniformly spread, and simultaneously, after the roller extrusion, rapidly cooling the cylindrical profile by adopting online forced air cooling and water cooling quenching to obtain the wide wallboard.
As a further scheme of the invention: and in the fourth step, the cooling speed is not less than 60 ℃/min, and the cooling speed can refine the internal structure of the forge piece and improve the performance of the forge piece.
As a further scheme of the invention: the TA15 alloy plate comprises the components of Al6.7, Zr2.0, Mo1.7 and V2.2, and the balance of Ti and inevitable impurities.
As a further scheme of the invention: in the 45-degree pressing process in the first step, the pressing amount is controlled to be 15-30% each time, the pressing amount in the first step for respectively performing compression once according to the directions of X, Y and Z axes is controlled to be 40-60%, and the pressing amount in the first step for drawing is controlled to be 25-35%.
As a further scheme of the invention: the cooling speed in the first step is controlled to be 5-20 ℃/min, and the speed can refine the internal structure of the forging and improve the performance of the forging.
As a further scheme of the invention: the finishing treatment in the fourth step mainly comprises the processes of sawing head and tail and straightening treatment.
As a further scheme of the invention: in the fourth step, in the extrusion process, the granularity of the external coating glass powder used for lubricating the outer surface of the tube blank and the extrusion cylinder is 130-150 meshes, the thickness of the glass film is 0.4-0.5 mm, the granularity of the internal coating glass powder used for lubricating the inner surface of the tube blank and the outer surface of the core rod is 80-100 meshes, the thickness of the glass film is 0.3-0.4 mm, a glass pad is adopted between the tube blank and the outlet die, the granularity of the glass powder for manufacturing the glass pad is 100-120 meshes, and the thickness of the glass pad is uniform.
As a further scheme of the invention: and step three, when the blank is subjected to gradient heating, controlling the temperature difference between two ends of the blank to be 60-100 ℃.
The invention has the beneficial effects that:
1. the invention processes the blank of the plate by smelting the plate before extruding the plate and by compressing, drawing and forging processing techniques, then the temperature is controlled to carry out the remelting and the heat preservation of the plate blank so as to improve the structure performance and the size uniformity of the plate blank, finally the obtained plate is subjected to gradient heating, then inputting the section bar from one end with lower temperature into a film outlet hole for extrusion, simultaneously detecting and adjusting the temperature near the film outlet hole, the contact position of the section bar and the film outlet hole can be always kept in a temperature range, so that the invention can improve the structure performance and the size uniformity of the wallboard before the wallboard is extruded, and can also keep the temperature of the contact position of the wall plate and the film outlet hole in the process of extruding the wall plate, thereby avoiding the negative influence of the temperature change of the wall plate on the extrusion of the wall plate in the extrusion process.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.
Example 1:
the technology for controlling the tissue performance and the size uniformity of the wide-width integrally-extruded wallboard and the plate comprises the following steps of:
step one, selecting a TA15 alloy plate as a blank, smelting according to a conventional process, simultaneously heating a treatment furnace for preheating, and after the smelting is finished, placing the treated blank in a treatment furnace at the temperature of 1000-.
And step two, the obtained pretreated section is returned to the furnace again for heat preservation, the temperature is reduced by 100-180 ℃, the heat preservation time is unchanged, then cooling is carried out, annealing is carried out at 850-900 ℃, then a cover type resistance heating furnace is adopted for heating to 1000-1100 ℃ for austenitizing, heat preservation is carried out for 6-12h, then quenching is carried out, then first tempering is carried out at 550-600 ℃, then second tempering is carried out at 600-650 ℃, the temperature rise speed is also controlled within the range of 60-100 ℃/h during tempering, the heat preservation time is controlled within 8-14h, the structure is refined through double refining treatment, the size of carbide particles is controlled, and the structure performance and the size uniformity are improved.
Step three, carrying out gradient heating on the section obtained in the step two, then adjusting the temperature range of the film outlet hole of the section to 750-fold 850 ℃, inputting the section from the lower end of the section to the film outlet hole for extrusion, simultaneously detecting the temperature near the film outlet hole, carrying out cooling treatment by adopting air cooling or water cooling when the temperature near the film outlet hole is more than 850 ℃, and carrying out heating treatment on the section by using a heating device when the temperature near the film outlet hole is less than 750 ℃, so that the contact position of the section and the film outlet hole can be always kept between 750-fold 850 ℃, and extruding the cylindrical section.
And fourthly, after the cylindrical profile is extruded, carrying out physical treatment on the cylindrical profile by utilizing an involute principle to enable the cylindrical profile to be unfolded, then carrying out finishing treatment on the cylindrical profile, then extruding the cylindrical profile by utilizing the rest heat by using two layers of rollers to enable the cylindrical profile to be uniformly spread, and simultaneously, after the roller extrusion, rapidly cooling the cylindrical profile by adopting online forced air cooling and water cooling quenching to obtain the wide wallboard.
In the fourth step, the cooling speed is not less than 60 ℃/min, and the cooling speed can refine the internal structure of the forge piece and improve the performance of the forge piece.
The TA15 alloy plate comprises the components of Al6.7, Zr2.0, Mo1.7 and V2.2, and the balance of Ti and inevitable impurities.
In the 45-degree pressing process in the first step, the pressing amount is controlled to be 15-30% each time, the pressing amount in the first step is controlled to be 40-60% by respectively compressing once according to the directions of X, Y and Z axes, and the pressing amount in the first step of drawing is controlled to be 25-35%.
The cooling speed in the first step is controlled to be 5-20 ℃/min, and the speed can refine the internal structure of the forging and improve the performance of the forging.
The finishing treatment in the fourth step mainly comprises the processes of sawing head and tail and straightening treatment.
In the extrusion process of the fourth step, the granularity of the external coating glass powder used for lubricating the outer surface of the tube blank and the extrusion cylinder is 130-150 meshes, the thickness of the glass film is 0.4-0.5 mm, the granularity of the internal coating glass powder used for lubricating the inner surface of the tube blank and the outer surface of the core rod is 80-100 meshes, the thickness of the glass film is 0.3-0.4 mm, a glass pad is adopted between the tube blank and the outlet die, the granularity of the glass powder for manufacturing the glass pad is 100-120 meshes, and the thickness of the glass pad is uniform.
And step three, controlling the temperature difference between two ends of the blank to be 60-100 ℃ when the blank is subjected to gradient heating.
Example 2:
the technology for controlling the tissue performance and the size uniformity of the wide-width integrally-extruded wallboard and the plate comprises the following steps of:
step one, selecting a TA15 alloy plate as a blank, smelting according to a conventional process, heating a treatment furnace at the same time, preheating, placing the treated blank in a treatment furnace with the temperature of 1000-1200 ℃ for uniform tissue treatment after smelting, preserving heat for 18-24h at the temperature, slowly cooling, heating to the temperature of 1200-1300 ℃ for forging, firstly performing 45-degree angle pressing twice, then respectively performing compression once in the directions of X, Y and Z three axes, performing five-time elongation treatment after compression is completed, repeatedly folding and forging the blank after each elongation, performing 45-degree angle pressing twice after treatment, returning to the furnace for heat preservation, controlling the temperature at 950-1000 ℃, controlling the heat preservation time at 3-5h, and then repeatedly compressing and preserving heat, Drawing and forging, wherein the final forging temperature is more than or equal to 750 ℃, and obtaining the pretreated section.
And step two, the obtained pretreated section is returned to the furnace for heat preservation again, the temperature is reduced by 100-plus-200 ℃, the heat preservation time is unchanged, then cooling is carried out, and annealing is carried out for 40min at 850-plus-900 ℃.
Step three, carrying out gradient heating on the section obtained in the step two, then adjusting the temperature range of the film outlet hole of the section to 750-fold 850 ℃, inputting the section from the lower end of the section to the film outlet hole for extrusion, simultaneously detecting the temperature near the film outlet hole, carrying out cooling treatment by adopting air cooling or water cooling when the temperature near the film outlet hole is more than 850 ℃, and carrying out heating treatment on the section by using a heating device when the temperature near the film outlet hole is less than 750 ℃, so that the contact position of the section and the film outlet hole can be always kept between 750-fold 850 ℃, and extruding the cylindrical section.
And fourthly, after the cylindrical profile is extruded, carrying out physical treatment on the cylindrical profile by utilizing an involute principle to enable the cylindrical profile to be unfolded, then carrying out finishing treatment on the cylindrical profile, then extruding the cylindrical profile by utilizing the rest heat by using two layers of rollers to enable the cylindrical profile to be uniformly spread, and simultaneously, after the roller extrusion, rapidly cooling the cylindrical profile by adopting online forced air cooling and water cooling quenching to obtain the wide wallboard.
In the fourth step, the cooling speed is not less than 60 ℃/min, and the cooling speed can refine the internal structure of the forge piece and improve the performance of the forge piece.
The TA15 alloy plate comprises the components of Al6.7, Zr2.0, Mo1.7 and V2.2, and the balance of Ti and inevitable impurities.
In the 45-degree pressing process in the first step, the pressing amount is controlled to be 15-30% each time, the pressing amount in the first step is controlled to be 40-60% by respectively compressing once according to the directions of X, Y and Z axes, and the pressing amount in the first step of drawing is controlled to be 25-35%.
The cooling speed in the first step is controlled to be 5-20 ℃/min, and the speed can refine the internal structure of the forging and improve the performance of the forging.
The finishing treatment in the fourth step mainly comprises the processes of sawing head and tail and straightening treatment.
In the extrusion process of the fourth step, the granularity of the external coating glass powder used for lubricating the outer surface of the tube blank and the extrusion cylinder is 130-150 meshes, the thickness of the glass film is 0.4-0.5 mm, the granularity of the internal coating glass powder used for lubricating the inner surface of the tube blank and the outer surface of the core rod is 80-100 meshes, the thickness of the glass film is 0.3-0.4 mm, a glass pad is adopted between the tube blank and the outlet die, the granularity of the glass powder for manufacturing the glass pad is 100-120 meshes, and the thickness of the glass pad is uniform.
And step three, controlling the temperature difference between two ends of the blank to be 60-100 ℃ when the blank is subjected to gradient heating.
Example 3:
the technology for controlling the tissue performance and the size uniformity of the wide-width integrally-extruded wallboard and the plate comprises the following steps of:
step one, selecting a TA15 alloy plate as a blank, smelting according to a conventional process, heating a treatment furnace at the same time, preheating, placing the treated blank in a treatment furnace with the temperature of 1000-1200 ℃ for uniform tissue treatment after smelting, preserving heat for 18-24h at the temperature, slowly cooling, heating to the temperature of 1200-1300 ℃ for forging, firstly performing 45-degree angle pressing twice, then respectively performing compression once in the directions of X, Y and Z three axes, performing five-time elongation treatment after compression is completed, repeatedly folding and forging the blank after each elongation, performing 45-degree angle pressing twice after treatment, returning to the furnace for heat preservation, controlling the temperature at 950-1000 ℃, controlling the heat preservation time at 3-5h, and then repeatedly compressing and preserving heat, Drawing and forging, wherein the final forging temperature is more than or equal to 750 ℃, and obtaining the pretreated section.
And step two, the obtained pretreated section is returned to the furnace again for heat preservation, the temperature is reduced by 100-180 ℃, the heat preservation time is unchanged, then cooling is carried out, annealing is carried out at 850-900 ℃, then a cover type resistance heating furnace is adopted for heating to 1000-1100 ℃ for austenitizing, heat preservation is carried out for 6-12h, then quenching is carried out, then first tempering is carried out at 550-600 ℃, then second tempering is carried out at 600-650 ℃, the temperature rise speed is also controlled within the range of 60-100 ℃/h during tempering, the heat preservation time is controlled within 8-14h, the structure is refined through double refining treatment, the size of carbide particles is controlled, and the structure performance and the size uniformity are improved.
And step three, heating the section obtained in the step two, adjusting the temperature range of the film outlet hole of the section to 750-850 ℃, extruding and extruding the section in the shape of a cylinder.
And fourthly, after the cylindrical profile is extruded, carrying out physical treatment on the cylindrical profile by utilizing an involute principle to enable the cylindrical profile to be unfolded, then carrying out finishing treatment on the cylindrical profile, then extruding the cylindrical profile by utilizing the rest heat by using two layers of rollers to enable the cylindrical profile to be uniformly spread, and simultaneously, after the roller extrusion, rapidly cooling the cylindrical profile by adopting online forced air cooling and water cooling quenching to obtain the wide wallboard.
In the fourth step, the cooling speed is not less than 60 ℃/min, and the cooling speed can refine the internal structure of the forge piece and improve the performance of the forge piece.
The TA15 alloy plate comprises the components of Al6.7, Zr2.0, Mo1.7 and V2.2, and the balance of Ti and inevitable impurities.
In the 45-degree pressing process in the first step, the pressing amount is controlled to be 15-30% each time, the pressing amount in the first step is controlled to be 40-60% by respectively compressing once according to the directions of X, Y and Z axes, and the pressing amount in the first step of drawing is controlled to be 25-35%.
The cooling speed in the first step is controlled to be 5-20 ℃/min, and the speed can refine the internal structure of the forging and improve the performance of the forging.
The finishing treatment in the fourth step mainly comprises the processes of sawing head and tail and straightening treatment.
In the extrusion process of the fourth step, the granularity of the external coating glass powder used for lubricating the outer surface of the tube blank and the extrusion cylinder is 130-150 meshes, the thickness of the glass film is 0.4-0.5 mm, the granularity of the internal coating glass powder used for lubricating the inner surface of the tube blank and the outer surface of the core rod is 80-100 meshes, the thickness of the glass film is 0.3-0.4 mm, a glass pad is adopted between the tube blank and the outlet die, the granularity of the glass powder for manufacturing the glass pad is 100-120 meshes, and the thickness of the glass pad is uniform.
The following table is obtained according to examples 1 to 3:
| structural properties of the sheet | Uniformity of dimension | Uniformity of extrusion | |
| Example 1 | In general | It is preferable that | It is preferable that |
| Example 2 | It is preferable that | In general | It is preferable that |
| Example 3 | It is preferable that | It is preferable that | In general |
The points to be finally explained are: although the present invention has been described in detail with reference to the general description and the specific embodiments, on the basis of the present invention, the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled 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 invention.
Claims (8)
1. The technology for controlling the tissue performance and the size uniformity of the wide-width integrally-extruded wallboard and the plate is characterized by comprising the following steps of:
step one, selecting a TA15 alloy plate as a blank, smelting according to a conventional process, heating a treatment furnace at the same time, preheating, placing the treated blank in a treatment furnace with the temperature of 1000-1200 ℃ for uniform tissue treatment after smelting, preserving heat for 18-24h at the temperature, slowly cooling, heating to the temperature of 1200-1300 ℃ for forging, firstly performing 45-degree angle pressing twice, then respectively performing compression once in the directions of X, Y and Z three axes, performing five-time elongation treatment after compression is completed, repeatedly folding and forging the blank after each elongation, performing 45-degree angle pressing twice after treatment, returning to the furnace for heat preservation, controlling the temperature at 950-1000 ℃, controlling the heat preservation time at 3-5h, and then repeatedly compressing and preserving heat, Drawing and forging, wherein the final forging temperature is more than or equal to 750 ℃, and obtaining a pretreated section;
step two, the obtained pretreated section is returned to the furnace for heat preservation again, the temperature is reduced by 100-180 ℃, the heat preservation time is unchanged, then cooling is carried out, annealing is carried out at the temperature of 850-900 ℃, then a cover type resistance heating furnace is adopted for heating to 1000-1100 ℃ for austenitizing, heat preservation is carried out for 6-12h, then quenching is carried out, then first tempering is carried out at the temperature of 550-600 ℃, then second tempering is carried out at the temperature of 600-650 ℃, the temperature rise speed is also controlled within the range of 60-100 ℃/h during tempering, the heat preservation time is controlled within 8-14h, the structure is refined through double refining treatment, the size of carbide particles is controlled, and the structure performance and the size uniformity are improved;
step three, carrying out gradient heating on the section obtained in the step two, then adjusting the temperature range of a film outlet hole of the section to 750-fold 850 ℃, inputting the film outlet hole from the lower end of the section for extrusion, simultaneously detecting the temperature near the film outlet hole, carrying out cooling treatment by adopting air cooling or water cooling when the temperature near the film outlet hole is more than 850 ℃, and carrying out heating treatment on the section by using a heating device when the temperature near the film outlet hole is less than 750 ℃ so that the contact position of the section and the film outlet hole can be always kept between 750-fold 850 ℃ to extrude the cylindrical section;
and fourthly, after the cylindrical profile is extruded, carrying out physical treatment on the cylindrical profile by utilizing an involute principle to enable the cylindrical profile to be unfolded, then carrying out finishing treatment on the cylindrical profile, then extruding the cylindrical profile by utilizing the rest heat by using two layers of rollers to enable the cylindrical profile to be uniformly spread, and simultaneously, after the roller extrusion, rapidly cooling the cylindrical profile by adopting online forced air cooling and water cooling quenching to obtain the wide wallboard.
2. The wide format integrally extruded wallboard, sheet material texture and dimensional uniformity control technique of claim 1, wherein: and in the fourth step, the cooling speed is not less than 60 ℃/min, and the cooling speed can refine the internal structure of the forge piece and improve the performance of the forge piece.
3. The wide format integrally extruded wallboard, sheet material texture and dimensional uniformity control technique of claim 1, wherein: the TA15 alloy plate comprises the components of Al6.7, Zr2.0, Mo1.7 and V2.2, and the balance of Ti and inevitable impurities.
4. The wide format integrally extruded wallboard, sheet material texture and dimensional uniformity control technique of claim 1, wherein: in the 45-degree pressing process in the first step, the pressing amount is controlled to be 15-30% each time, the pressing amount in the first step for respectively performing compression once according to the directions of X, Y and Z axes is controlled to be 40-60%, and the pressing amount in the first step for drawing is controlled to be 25-35%.
5. The wide format integrally extruded wallboard, sheet material texture and dimensional uniformity control technique of claim 1, wherein: the cooling speed in the first step is controlled to be 5-20 ℃/min, and the speed can refine the internal structure of the forging and improve the performance of the forging.
6. The wide format integrally extruded wallboard, sheet material texture and dimensional uniformity control technique of claim 1, wherein: the finishing treatment in the fourth step mainly comprises the processes of sawing head and tail and straightening treatment.
7. The wide format integrally extruded wallboard, sheet material texture and dimensional uniformity control technique of claim 1, wherein: in the fourth step, in the extrusion process, the granularity of the external coating glass powder used for lubricating the outer surface of the tube blank and the extrusion cylinder is 130-150 meshes, the thickness of the glass film is 0.4-0.5 mm, the granularity of the internal coating glass powder used for lubricating the inner surface of the tube blank and the outer surface of the core rod is 80-100 meshes, the thickness of the glass film is 0.3-0.4 mm, a glass pad is adopted between the tube blank and the outlet die, the granularity of the glass powder for manufacturing the glass pad is 100-120 meshes, and the thickness of the glass pad is uniform.
8. The wide format integrally extruded wallboard, sheet material texture and dimensional uniformity control technique of claim 1, wherein: and step three, when the blank is subjected to gradient heating, controlling the temperature difference between two ends of the blank to be 60-100 ℃.
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