CN114178310B - Method for rolling titanium alloy rod and wire by adopting multiple passes - Google Patents
Method for rolling titanium alloy rod and wire by adopting multiple passes Download PDFInfo
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- 238000005096 rolling process Methods 0.000 title claims abstract description 140
- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 50
- 238000000137 annealing Methods 0.000 claims abstract description 38
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 238000004321 preservation Methods 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 230000007547 defect Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 3
- 238000005242 forging Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 208000032544 Cicatrix Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010622 cold drawing Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000010274 multidirectional forging Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 230000037387 scars Effects 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
- B21B3/02—Rolling special iron alloys, e.g. stainless steel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
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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
- C22F1/16—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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Metal Rolling (AREA)
Abstract
The invention relates to a method for rolling titanium alloy rods and wires by adopting multiple passes, and belongs to the technical field of rolling. Placing the titanium alloy plate into a heating furnace for two-stage preheating, and carrying out four-stage heat preservation, rolling and annealing on the preheated rolled material; and immediately carrying out water cooling on the rolled material subjected to the last rolling to obtain the high-strength and high-plasticity rod-wire material. The invention realizes that the surface defects of the rod and the wire rod can be effectively solved, such as cracks, lugs, folds and the like, and the occurrence of low strength and low plasticity of the material is avoided. The invention realizes large deformation rolling and can prepare high-strength and high-plasticity rod wire materials.
Description
Technical Field
The invention relates to a method for rolling titanium alloy rods and wires by adopting multiple passes, and belongs to the technical field of rolling.
Background
The bar is widely applied in industries such as manufacturing industry, transportation industry, building industry and the like, and plays an important role in the development of national economy in China. With further expansion of iron and steel production capacity, market competition is increasingly strong, and advanced production process and rolling technology are promoted to be continuously developed. For bar rolling, due to the variety of the hole patterns, conventional rolling theory and analytic calculation have certain limitations, and the finite element technology can adapt to various complex shapes and external conditions by dividing a continuous medium for solving unknown field variables into a plurality of units, so that relatively real related parameters can be solved for engineering problems.
However, the wire rod has disadvantages such as cracks, ears, folds, scars (scales or scales), scratches, pitting, delamination, oxidation, decarburization, and the like. The biggest harm of surface defects is to reduce plastic indexes such as the reduction of area of the wire rod, thereby influencing cold drawing processability. However, some large deformation techniques have not been widely used because of being limited by complicated molds and equipment. If the multidirectional forging technology is high in deformation rate, the forging is easy to crack, and the forging structure is uneven. The cumulative tandem rolling technique has greatly limited its application due to limitations in its intermittent process and material weldability.
Patent application number 2014102383111, a method for producing TC4 titanium alloy rod and wire by adopting a high-speed continuous rolling mill. The application utilizes a stepping heating furnace to heat blanks, and performs blooming, pre-finish rolling, wire spinning, air cooling and coil collecting on the blanks by a high-speed continuous rolling mill to manufacture TC4 titanium alloy bar wire products by using TC4 titanium alloy forging square blanks. The hot rolled rod wire with target line shape, roundness and surface can be obtained through a single rolling process on the original method for producing the TC4 titanium alloy rod wire by the high-speed continuous rolling mill, and intermediate annealing is not needed, so that the production process flow is shortened, the quality, the yield and the yield of the rod wire are improved, and the production cost of the TC4 titanium alloy rod wire is reduced.
The patent application number is 2017103102814, and relates to a preparation method of a high-strength titanium alloy rod wire. For titanium alloy at beta transition temperature T β High-temperature hot rolling is carried out at a temperature range of 15 ℃ below, and the strain rate is controlled within 3s < -1 >; carrying out warm drawing deformation on the titanium alloy rod wire rod at 500-600 ℃, wherein the strain quantity reaches more than 1, and the strain rate is controlled within 0.1s < -1 >; stabilizing the deformed titanium alloy rod wire at 250-380 ℃ for 2-4 h; and then annealing the titanium alloy rod wire at 520-680 ℃ for 2-6 h. The titanium alloy rod wire produced by the method has fine and uniform structure and good strength.
Neither of the above applications yields a rod and wire material with better material properties, such as high strength, high plasticity. The invention realizes large deformation rolling by changing the rolling direction by using a common rolling mill, and prepares the high-strength and high-plasticity rod wire material.
Disclosure of Invention
In order to realize that the surface defects of the rod and wire materials can be effectively solved, such as cracks, lugs, folds and the like, the occurrence of low strength and low plasticity of the materials is avoided, and the rod and wire materials with high strength and high plasticity are prepared. The invention is realized by the following technical scheme.
A method for rolling a titanium alloy rod wire by adopting multiple passes, comprising the following steps:
step 1, placing a titanium alloy plate into a heating furnace for two-stage preheating, specifically:
1.1 preheating I: preheating at 800-850 deg.C for 10-20min;
1.2 preheating II: continuously preheating at 900-950 deg.C for 20-30min;
step 2, carrying out four stages of heat preservation, rolling and annealing on the preheated rolled material, wherein the steps are as follows:
2.1, preserving heat for 5-10min at 900-950 ℃, rolling for the first time, and annealing at 900-950 ℃ for 10-20min;
2.2, continuously preserving the heat at 1000-1050 ℃ for 5-10min, reversely rotating the rolling and rolling for 90 DEG, then carrying out second pass rolling, and carrying out annealing treatment at 1000-1050 ℃ for 10-20min;
2.3, keeping the temperature at 1100-1150 ℃ for 15-20min, reversely rotating the rolling and rolling for 90 DEG, then rolling for the third time, and annealing at 1100-1150 ℃ for 20-30min;
2.4, continuously preserving the heat at the temperature of 1200-1250 ℃ for 15-20min, reversely rotating the rolling and rolling for 90 DEG, then carrying out the fourth pass rolling, and carrying out the annealing treatment at the temperature of 1200-1250 ℃ for 20-30min;
and 3, immediately performing water cooling on the rolled material subjected to the last rolling to obtain a high-strength and high-plasticity rod wire material.
The size of the titanium alloy sheet in the step 1 is 30-35mm multiplied by 20-25mm.
And (2) rolling the titanium alloy sheet in the step (2) on a two-roller mill.
In the step 2.1, the first rolling is performed by taking the length direction of the titanium alloy plate as the rolling direction.
The beneficial effects of the invention are as follows:
1. the invention realizes that the surface defects of the rod and the wire rod can be effectively solved, such as cracks, lugs, folds and the like, and the occurrence of low strength and low plasticity of the material is avoided.
2. The invention realizes large deformation rolling and can prepare high-strength and high-plasticity rod wire materials.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The invention will be further described with reference to the drawings and detailed description.
Example 1
As shown in fig. 1, the method for rolling the titanium alloy rod wire rod by adopting multiple passes comprises the following steps:
step 1, placing a TC4 titanium alloy plate with the size of 30mm multiplied by 20mm into a heating furnace to perform two-stage preheating, wherein the method specifically comprises the following steps:
1.1 preheating I: preheating at 800 deg.C for 10min;
1.2 preheating II: continuously preheating for 20min at 900 ℃;
step 2, carrying out four stages of heat preservation, rolling (rolling of a titanium alloy plate on a two-roller mill) and annealing on the preheated rolled material, wherein the three stages are specifically as follows:
2.1, preserving heat at 900 ℃ for 5min, performing first-pass rolling, wherein the first-pass rolling is performed by taking the length direction of the titanium alloy plate as the rolling direction, and performing annealing treatment at 900 ℃ for 10min;
2.2, continuously preserving the heat at 1000 ℃ for 5min, reversely rotating the rolling and rolling for 90 DEG, then carrying out second pass rolling, and carrying out annealing treatment at 1000 ℃ for 10min;
2.3, continuously preserving the heat at 1100 ℃ for 15min, reversely rotating the rolling and rolling for 90 DEG, then rolling for the third time, and annealing at 1100 ℃ for 20min;
2.4, continuously preserving the heat at 1200 ℃ for 15min, reversely rotating the rolling and rolling for 90 DEG, then carrying out fourth pass rolling, and carrying out annealing treatment at 1200 ℃ for 20min;
and 3, immediately performing water cooling on the rolled material subjected to the last rolling to obtain a high-strength and high-plasticity rod wire material.
Compared with the conventional TC4 rod material, the TC4 rod material prepared by the method has the advantages that the tensile strength in the rolling direction is improved by 8.9%, and the yield strength is improved by 11.6%; the transverse tensile strength of the plate is improved by 19.6%, and the yield strength is improved by 20.3%.
Example 2
As shown in fig. 1, the method for rolling the titanium alloy rod wire rod by adopting multiple passes comprises the following steps:
step 1, placing TC4 titanium alloy plates with the dimensions of 32mm multiplied by 22mm into a heating furnace for two-stage preheating, wherein the steps are as follows:
1.1 preheating I: preheating at 820 deg.C for 14min;
1.2 preheating II: continuously preheating for 24min at 920 ℃;
step 2, carrying out four stages of heat preservation, rolling (rolling of a titanium alloy plate on a two-roller mill) and annealing on the preheated rolled material, wherein the three stages are specifically as follows:
2.1, preserving heat for 7min at 920 ℃, and performing first-pass rolling, wherein the first-pass rolling is performed by taking the length direction of the titanium alloy plate as the rolling direction, and annealing treatment is performed for 14min at 920 ℃;
2.2, continuously preserving heat at 1020 ℃ for 7min, reversely rotating the rolling and rolling for 90 DEG, then carrying out second-pass rolling, and carrying out annealing treatment at 1020 ℃ for 14min;
2.3, continuously preserving the heat at 1120 ℃ for 17min, reversely rotating the rolling and rolling for 90 DEG, then rolling for the third time, and carrying out annealing treatment at 1120 ℃ for 24min;
2.4, continuously preserving heat at 1220 ℃ for 17min, reversely rotating the rolling and rolling for 90 DEG, then carrying out fourth pass rolling, and carrying out annealing treatment at 1220 ℃ for 24min;
and 3, immediately performing water cooling on the rolled material subjected to the last rolling to obtain a high-strength and high-plasticity rod wire material.
Compared with the conventional TC4 rod material, the TC4 rod material prepared by the method has 9.4% of tensile strength in the rolling direction and 12.1% of yield strength; the transverse tensile strength of the plate is improved by 21.2%, and the yield strength is improved by 22.5%.
Example 3
As shown in fig. 1, the method for rolling the titanium alloy rod wire rod by adopting multiple passes comprises the following steps:
step 1, placing a TC4 titanium alloy plate with the size of 35mm multiplied by 25mm into a heating furnace to perform two-stage preheating, wherein the method specifically comprises the following steps:
1.1 preheating I: preheating for 20min at 850 ℃;
1.2 preheating II: continuously preheating for 30min at 950 ℃;
step 2, carrying out four stages of heat preservation, rolling (rolling of a titanium alloy plate on a two-roller mill) and annealing on the preheated rolled material, wherein the three stages are specifically as follows:
2.1, preserving heat for 10min at 950 ℃, and performing first-pass rolling, wherein the first-pass rolling is performed by taking the length direction of the titanium alloy plate as the rolling direction, and annealing treatment is performed for 20min at 950 ℃;
2.2, continuously preserving the heat at 1050 ℃ for 10min, reversely rotating the rolling and rolling for 90 DEG, then carrying out second-pass rolling, and carrying out annealing treatment at 1050 ℃ for 20min;
2.3, continuously preserving the heat at 1150 ℃ for 20min, reversely rotating the rolling and rolling for 90 DEG, then rolling for the third time, and annealing at 1150 ℃ for 30min;
2.4, continuously preserving the heat at 1250 ℃ for 20min, reversely rotating the rolling and rolling for 90 DEG, then carrying out the fourth pass rolling, and carrying out the annealing treatment at 1250 ℃ for 30min;
and 3, immediately performing water cooling on the rolled material subjected to the last rolling to obtain a high-strength and high-plasticity rod wire material.
Compared with the conventional TC4 rod material, the TC4 rod material prepared by the method has 9.5% of tensile strength in the rolling direction and 13.6% of yield strength; the transverse tensile strength of the plate is improved by 24.9%, and the yield strength is improved by 21.5%.
Example 4
As shown in fig. 1, the method for rolling the titanium alloy rod wire rod by adopting multiple passes comprises the following steps:
step 1, placing a TC4 titanium alloy plate with the size of 33mm multiplied by 23mm into a heating furnace to perform two-stage preheating, wherein the method specifically comprises the following steps:
1.1 preheating I: preheating at 830 ℃ for 16min;
1.2 preheating II: continuously preheating for 26min at 930 ℃;
step 2, carrying out four stages of heat preservation, rolling (rolling of a titanium alloy plate on a two-roller mill) and annealing on the preheated rolled material, wherein the three stages are specifically as follows:
2.1, preserving heat for 8min at the temperature of 930 ℃, and performing first-pass rolling, wherein the first-pass rolling is performed by taking the length direction of the titanium alloy plate as the rolling direction, and annealing treatment is performed for 26min at the temperature of 930 ℃;
2.2, continuously preserving the heat at 1030 ℃ for 8min, reversely rotating the rolling and rolling for 90 DEG, then carrying out second-pass rolling, and carrying out annealing treatment at 1030 ℃ for 16min;
2.3, continuously preserving the heat at 1130 ℃ for 18min, reversely rotating the rolling and rolling for 90 DEG, then rolling for the third time, and annealing at 1130 ℃ for 26min;
2.4, continuously preserving heat at the temperature of 1230 ℃ for 18min, reversely rotating the rolling and rolling for 90 DEG, then carrying out the fourth pass rolling, and carrying out the annealing treatment at the temperature of 1230 ℃ for 26min;
and 3, immediately performing water cooling on the rolled material subjected to the last rolling to obtain a high-strength and high-plasticity rod wire material.
Compared with the conventional TC4 rod material, the TC4 rod material prepared by the method has the advantages that the tensile strength in the rolling direction is improved by 10.2%, and the yield strength is improved by 13.5%; the transverse tensile strength of the plate is improved by 26.3%, and the yield strength is improved by 22.7%.
Example 5
As shown in fig. 1, the method for rolling the titanium alloy rod wire rod by adopting multiple passes comprises the following steps:
step 1, placing a TC4 titanium alloy plate with the size of 34mm multiplied by 24mm into a heating furnace to perform two-stage preheating, wherein the method specifically comprises the following steps:
1.1 preheating I: preheating for 18min at 840 ℃;
1.2 preheating II: continuously preheating at 940 ℃ for 28min;
step 2, carrying out four stages of heat preservation, rolling (rolling of a titanium alloy plate on a two-roller mill) and annealing on the preheated rolled material, wherein the three stages are specifically as follows:
2.1, preserving heat for 9min at the temperature of 940 ℃, and performing first-pass rolling, wherein the first-pass rolling is performed by taking the length direction of the titanium alloy plate as the rolling direction, and annealing treatment is performed for 18min at the temperature of 940 ℃;
2.2, continuously preserving heat for 9min at 1040 ℃, reversely rotating the rolling and rolling for 90 DEG, then carrying out second-pass rolling, and carrying out annealing treatment for 18min at 1040 ℃;
2.3, continuously preserving the heat at 1130 ℃ for 18min, reversely rotating the rolling and rolling for 90 DEG, then rolling for the third time, and annealing at 1130 ℃ for 26min;
2.4, continuously preserving the heat at the temperature of 1240 ℃ for 19min, reversely rotating the rolling and rolling for 90 DEG, then carrying out the fourth pass rolling, and carrying out the annealing treatment at the temperature of 1240 ℃ for 28min;
and 3, immediately performing water cooling on the rolled material subjected to the last rolling to obtain a high-strength and high-plasticity rod wire material.
Compared with the conventional TC4 rod material, the TC4 rod material prepared by the method has the advantages that the tensile strength in the rolling direction is improved by 8.7%, and the yield strength is improved by 14.2%; the transverse tensile strength of the plate is improved by 25.3%, and the yield strength is improved by 20.8%.
While the present invention has been described in detail with reference to the drawings, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (4)
1. The method for rolling the titanium alloy rod and wire by adopting multiple passes is characterized by comprising the following steps of:
step 1, placing a titanium alloy plate into a heating furnace for two-stage preheating, specifically:
1.1 preheating I: preheating at 800-850 deg.C for 10-20min;
1.2 preheating II: continuously preheating at 900-950 deg.C for 20-30min;
step 2, carrying out four stages of heat preservation, rolling and annealing on the preheated rolled material, wherein the steps are as follows:
2.1, preserving heat for 5-10min at 900-950 ℃, rolling for the first time, and annealing at 900-950 ℃ for 10-20min;
2.2, continuously preserving the heat at 1000-1050 ℃ for 5-10min, rolling the rolled material, reversely rotating for 90 DEG, then carrying out second pass rolling, and carrying out annealing treatment at 1000-1050 ℃ for 10-20min;
2.3, continuously preserving the heat at 1100-1150 ℃ for 15-20min, rolling the rolled material, reversely rotating for 90 DEG, then rolling for the third time, and annealing at 1100-1150 ℃ for 20-30min;
2.4, continuously preserving the heat at the temperature of 1200-1250 ℃ for 15-20min, rolling the rolled material, reversely rotating for 90 DEG, then carrying out the fourth pass rolling, and carrying out the annealing treatment at the temperature of 1200-1250 ℃ for 20-30min;
and 3, immediately performing water cooling on the rolled material subjected to the last rolling to obtain a high-strength and high-plasticity rod wire material.
2. The method for rolling a titanium alloy rod wire with multiple passes according to claim 1, wherein: the size of the titanium alloy sheet in the step 1 is 30-35mm multiplied by 20-25mm.
3. The method for rolling a titanium alloy rod wire with multiple passes according to claim 1, wherein: in the step 2, the rolling is carried out on a two-roller rolling mill for the rolled material.
4. A method of rolling a titanium alloy rod wire in multiple passes according to claim 3, wherein: the first rolling in the step 2.1 is performed by taking the length direction of the rolled material as the rolling direction.
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| CN114602971B (en) * | 2022-04-01 | 2024-07-30 | 浙江富钢集团有限公司 | Production process of pure titanium ingot one-fire forming material |
| CN115502202B (en) * | 2022-10-11 | 2024-05-24 | 攀钢集团攀枝花钢铁研究院有限公司 | Titanium and titanium alloy square billet processing method |
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| CN106826118A (en) * | 2017-02-08 | 2017-06-13 | 大连盛辉钛业有限公司 | A kind of preparation method for manufacturing the medical titanium alloy bar of pedicle screw |
| CN111485133A (en) * | 2020-04-14 | 2020-08-04 | 苏州福漫精密有限公司 | Metal wire for medical instrument and preparation process and preparation method thereof |
| CN112692060A (en) * | 2020-12-11 | 2021-04-23 | 湖南湘投金天钛金属股份有限公司 | Preparation method of titanium alloy plate |
| CN113523013A (en) * | 2021-08-19 | 2021-10-22 | 索罗曼(常州)合金新材料有限公司 | Production process of thick-wire-diameter titanium alloy wire |
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