Process for manufacturing a high-performance titanium brake disc blank

Abstract

This invention relates to the field of titanium alloy manufacturing technology, and particularly to a manufacturing process for a high-performance titanium brake disc blank, comprising the following steps: S1, raw material preparation; S2, billet forging: S2-1, forging the ingot using a hot forging press; S2-2, upsetting and drawing again using a hot forging press; S2-3, upsetting and drawing using a high-speed forging mill; S3, finished product forging; S4, heat treatment; S5, physical and chemical testing; S6, rough machining; S7, special heat treatment; S8, finish machining; S9, dimensional inspection. Through a special material ratio and hot working process, a high-performance ring-shaped blank is obtained, with significantly improved tensile strength, yield strength, elongation, and reduction of area. The special heat treatment during processing can correct the shape of the semi-finished product and eliminate stress, preventing deformation during later processing. During finish machining, a three-jaw chuck is used to increase the contact area between the chuck and the blank, preventing deformation due to external forces and the processing itself, thus improving the yield rate.

Description

Technical Field

[0001] This invention relates to the field of titanium alloy manufacturing technology, and in particular to a manufacturing process for a high-performance titanium brake disc blank. Background Technology

[0002] Brakes are divided into disc brakes, drum brakes, and air brakes. Because disc brakes dissipate heat better than drum brakes, they are less prone to heat fade during high-speed braking, resulting in better high-speed braking performance. Many mid-to-high-end cars use full disc brakes. The brake disc is a very important component of the braking system.

[0003] Titanium alloys, due to their excellent chemical stability, low density, and high strength, have been increasingly used in brake discs. However, as disclosed in Chinese patent CN115069952A, a highly efficient method for preparing titanium alloy forgings, the low coefficient of linear expansion, high tensile strength, and poor metal fluidity of titanium alloys mean that for large-sized blanks, direct upsetting and drawing during processing can lead to uneven metal deformation, poor yield strength, and poor plasticity. Furthermore, because brake discs require high parallelism and flatness, slight deformation and significant stress are already present during rough machining and wire cutting. Given the thinness of the product, subsequent processing is highly susceptible to deformation, resulting in severely deformed and twisted brake discs that negatively impact the yield rate. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a manufacturing process for high-performance titanium brake disc blanks.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A manufacturing process for a high-performance titanium brake disc blank includes the following steps:

[0007] S1. Preparation of raw materials: Select grade 0 sponge titanium with N≤0.008, C≤0.008, H≤0.002 and hardness≤100HB, add intermediate alloy ZrO2, TiO2, AlV55 and iron nails, and melt it into ingots through a vacuum consumable arc furnace.

[0008] S2, Forging of blanks:

[0009] S2-1. The ingot is forged by a hot forging press and treated at 1130℃~1180℃ for 340~380min. After two upsetting and two drawing processes, the outer diameter is reduced to 5 / 6 of the original ingot.

[0010] S2-2, The outer diameter remains unchanged after being upset and drawn again by a hot forging press at 1030℃~1080℃ for 280~320min.

[0011] S2-3. The outer diameter is reduced to 3 / 10 of the original ingot by processing it in a high-speed forging machine at 970℃~980℃ for 280~320min, with one upsetting and one drawing.

[0012] S3, Finished product forging:

[0013] S3-1. Treat the billet at 960℃~980℃ for 110~130min, and shape and punch it with an air hammer to obtain a rough ring;

[0014] S3-2. The wool ring is treated at 950℃~970℃ for 110~130min, and then formed by expanding the hole with an air hammer to obtain a ring-shaped blank.

[0015] S4. Heat treatment: Treat at 740℃~760℃ for 110~130min, then immediately air cool to obtain high-strength ring-shaped billet;

[0016] S5. Physical and chemical testing: The tensile strength, yield strength, elongation, and reduction of area of ​​the ring-shaped billet are tested.

[0017] S6. Rough machining: Rough machining is performed on all surfaces of the ring material, followed by wire cutting to slice it into sheets;

[0018] S7. Special heat treatment: The sheet material is fastened with a flat die and annealed at 520℃~540℃ for 8h~10h. It is then taken out of the furnace at below 150℃ to obtain a billet with low internal stress, high flatness, and is not easily deformed in later processing.

[0019] S8. Finishing: First, use an internal three-jaw chuck to support the inner diameter and finish machine the outer diameter of the ring to the specified dimensions. Then, use an external three-jaw chuck to support the outer diameter and finish machine the inner diameter and end face.

[0020] S9. Dimensional inspection.

[0021] Preferably, the composition percentage of the ingot is: Zr: 0.03%~0.05%, V: 4.1%~4.3%, Al: 6.0%~6.2%, O: 0.15%~0.17%, Fe: 0.16%~0.18%, C: ≤0.03%, N: ≤0.02%, H: ≤0.01%.

[0022] Preferably, the hot forging press in step S2-1 is a 6300T model with a down-upsetting ratio of 1.8 to 2.8.

[0023] Preferably, the hot forging press in step S2-2 is a 4500T model with a down-upsetting ratio of 1.7 to 1.8.

[0024] Preferably, in step S6, a 2mm machining allowance is left on one side of the rough machining, and a 2mm allowance is left for the total thickness of the slices after wire cutting.

[0025] Preferably, the flat plate tooling in step S7 includes a steel mold with an annular groove, a flat plate clamp, and fastening screws.

[0026] Preferably, in step S7, when securing the sheet material, the cut sheet material is stacked in groups of 10 in a steel mold, and the flat plate clamp is secured to the steel mold with fastening screws.

[0027] Preferably, the three-jaw clamp in step S8 comprises three arc-shaped plates whose curvature matches the inner or outer diameter of the ring material.

[0028] Preferably, in step S9, a marble platform is used and a dial indicator is used to inspect the dimensions, flatness, and parallelism of the finished product.

[0029] The beneficial effects of this invention are:

[0030] 1. High-performance ring-shaped billets are obtained through special material proportions and hot processing technology. The tensile strength, yield strength, elongation and reduction of area of ​​the ring-shaped billets are significantly improved.

[0031] 2. Through special heat treatment during processing, the semi-finished product can be shaped and stress can be eliminated, preventing deformation during later processing.

[0032] 3. During the finishing process, a three-jaw chuck is used to increase the contact area between the chuck and the workpiece, preventing deformation caused by external forces and during the machining process. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of a flat die structure for a manufacturing process of a high-performance titanium brake disc blank proposed in this invention.

[0034] Figure 2 This is a schematic diagram of the internal three-jaw clamp structure for the manufacturing process of a high-performance titanium brake disc blank proposed in this invention.

[0035] Figure 3 This is a schematic diagram of the external three-jaw clamp structure for the manufacturing process of a high-performance titanium brake disc blank proposed in this invention.

[0036] In the diagram: 1. Flat plate mold; 11. Steel mold; 12. Flat plate clamp; 13. Fastening screw; 2. Internal three-jaw clamp; 3. External three-jaw clamp. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0038] Example 1: A manufacturing process for a high-performance titanium brake disc blank, comprising the following steps:

[0039] S1. Raw material preparation: Grade 0 sponge titanium with N≤0.008, C≤0.008, H≤0.002, and hardness≤100HB was selected. Intermediate alloys ZrO2, TiO2, AlV55, and iron nails were added, and the mixture was smelted into φ600×L ingots using a vacuum arc furnace. The composition percentage of the ingots was: Zr: 0.039%, V: 4.1%, Al: 6.2%, O: 0.17%, Fe: 0.18%, C: ≤0.03%, N: ≤0.02%, H: ≤0.01%, with the remainder being Ti.

[0040] S2, Forging of blanks:

[0041] S2-1. The ingot is forged by a hot forging press and treated at 1130℃~1180℃ for 350 minutes. After two upsetting and two drawing, a billet of 500×500×L is obtained. The hot forging press model is 6300T and the downsetting ratio is 2.0.

[0042] S2-2. The hot forging press is used to reverse the direction of the upsetting and drawing process again. The process is carried out at 1030℃~1080℃ for 310 minutes. After two upsetting and two drawing processes, a billet with a size of 500×500×L is obtained. The hot forging press model is 4500T and the downsetting ratio is 1.7.

[0043] S2-3. The billet is processed for 300 minutes at 970℃~980℃ using a high-speed forging machine, with one upsetting and one drawing, to obtain a φ180×L billet. The model of the high-speed forging machine is 2500T.

[0044] S3, Finished product forging:

[0045] S3-1. The billet is treated at 970℃ for 120 minutes and then shaped and punched by a 1000KG air hammer to obtain a rough ring.

[0046] S3-2. The wool ring is treated at 960℃ for 120 minutes and then formed by expanding the hole with a 1000KG air hammer to obtain a ring-shaped blank.

[0047] S4. Heat treatment: Treat at 740℃ for 130 minutes, then immediately air cool to obtain a high-strength ring-shaped billet;

[0048] S5. Physical and chemical testing: The tensile strength, yield strength, elongation, and reduction of area of ​​the ring-shaped billet are tested.

[0049] S6. Rough machining: Rough turn all surfaces of the ring material, then cut it into sheets using wire EDM to obtain sheet material; leave a 2mm machining allowance on each side for rough turning, cut the sheet into sheets using wire EDM, and leave a 2mm allowance for the total thickness of the sheet;

[0050] S7. Special heat treatment: The sheet material is fastened with a flat die and annealed at 520℃~540℃ for 8 hours. It is then removed from the furnace at a temperature below 150℃ to obtain a billet with low internal stress, high flatness, and resistance to deformation during subsequent processing. The flat die includes a steel die with annular grooves, a flat clamp, and fastening screws. When fastening the sheet material, 10 cut sheets are stacked in a group in the steel die, and the flat clamp is fastened to the steel die with the fastening screws.

[0051] S8. Finishing: First, use an internal three-jaw chuck to support the inner diameter and finish machine the outer diameter of the ring to the specified dimensions. Then, use an external three-jaw chuck to support the outer diameter and finish machine the inner diameter and end face. The internal three-jaw chuck includes three arc-shaped plates with curvature matching the inner diameter of the ring material. The external three-jaw chuck includes three arc-shaped plates with curvature matching the outer diameter of the ring material.

[0052] S9. Dimensional Inspection: Use a marble platform and a dial indicator to inspect the dimensions, flatness, and parallelism of the finished product.

[0053] Example 2: A manufacturing process for a high-performance titanium brake disc blank, comprising the following steps:

[0054] S1. Raw material preparation: Grade 0 sponge titanium with N≤0.008, C≤0.008, H≤0.002, and hardness≤100HB is selected. Intermediate alloys ZrO2, TiO2, AlV55, and iron nails are added, and the mixture is smelted into φ600×L ingots using a vacuum arc remelting furnace. The composition percentage of the ingots is: Zr: 0.04%, V: 4.2%, Al: 6.1%, O: 0.16%, Fe: 0.17%, C: ≤0.03%, N: ≤0.02%, H: ≤0.01%, with the remainder being Ti.

[0055] S2, Forging of blanks:

[0056] S2-1. The ingot is forged by a hot forging press and treated at 1130℃~1180℃ for 360 minutes. After two upsetting and two drawing processes, a billet of 500×500×L is obtained. The hot forging press model is 6300T and the downsetting ratio is 2.4.

[0057] S2-2. The hot forging press is used to reverse the direction of the upsetting and drawing process again. The process is carried out at 1030℃~1080℃ for 300 minutes. After two upsetting and two drawing processes, a billet with a size of 500×500×L is obtained. The hot forging press model is 4500T and the downsetting ratio is 1.7.

[0058] S2-3. The billet is processed for 300 minutes at 970℃~980℃ using a high-speed forging machine, with one upsetting and one drawing, to obtain a φ180×L billet. The model of the high-speed forging machine is 2500T.

[0059] S3, Finished product forging:

[0060] S3-1. The billet is treated at 970℃ for 120 minutes and then shaped and punched by a 1000KG air hammer to obtain a rough ring.

[0061] S3-2. The wool ring is treated at 960℃ for 120 minutes and then formed by expanding the hole with a 1000KG air hammer to obtain a ring-shaped blank.

[0062] S4. Heat treatment: Treat at 750℃ for 120 minutes, then immediately air cool to obtain a high-strength ring-shaped billet;

[0063] S5. Physical and chemical testing: The tensile strength, yield strength, elongation, and reduction of area of ​​the ring-shaped billet are tested.

[0064] S6. Rough machining: Rough turn all surfaces of the ring material, then cut it into sheets using wire EDM to obtain sheet material; leave a 2mm machining allowance on each side for rough turning, cut the sheet into sheets using wire EDM, and leave a 2mm allowance for the total thickness of the sheet;

[0065] S7. Special heat treatment: The sheet material is fastened with a flat die and annealed at 520℃~540℃ for 9 hours. It is then removed from the furnace at a temperature below 150℃ to obtain a billet with low internal stress, high flatness, and resistance to deformation during subsequent processing. The flat die includes a steel die with annular grooves, a flat clamp, and fastening screws. When fastening the sheet material, 10 cut sheets are stacked in a group in the steel die, and the flat clamp is fastened to the steel die with the fastening screws.

[0066] S8. Finishing: First, use an internal three-jaw chuck to support the inner diameter and finish machine the outer diameter of the ring to the specified dimensions. Then, use an external three-jaw chuck to support the outer diameter and finish machine the inner diameter and end face. The internal three-jaw chuck includes three arc-shaped plates with curvature matching the inner diameter of the ring material. The external three-jaw chuck includes three arc-shaped plates with curvature matching the outer diameter of the ring material.

[0067] S9. Dimensional Inspection: Use a marble platform and a dial indicator to inspect the dimensions, flatness, and parallelism of the finished product.

[0068] Example 3: A manufacturing process for a high-performance titanium brake disc blank, comprising the following steps:

[0069] S1. Raw material preparation: Grade 0 sponge titanium with N≤0.008, C≤0.008, H≤0.002, and hardness≤100HB was selected. Intermediate alloys ZrO2, TiO2, AlV55, and iron nails were added, and the mixture was smelted into φ600×L ingots using a vacuum arc furnace. The composition percentage of the ingots was: Zr: 0.04%, V: 4.1%, Al: 6.2%, O: 0.15%, Fe: 0.16%, C: ≤0.03%, N: ≤0.02%, H: ≤0.01%, with the remainder being Ti.

[0070] S2, Forging of blanks:

[0071] S2-1. The ingot is forged by a hot forging press and treated at 1130℃~1180℃ for 380 minutes. After two upsetting and two drawing processes, a billet of 500×500×L is obtained. The hot forging press model is 6300T and the downsetting ratio is 2.5.

[0072] S2-2. The billet is re-upset and drawn by a hot forging press at 1030℃~1080℃ for 310 minutes. After two upsetting and two drawing processes, a billet of 500×500×L is obtained. The hot forging press is a 4500T model and the downsetting ratio is 1.8.

[0073] S2-3. The billet is processed for 300 minutes at 970℃~980℃ using a high-speed forging machine, with one upsetting and one drawing, to obtain a φ180×L billet. The model of the high-speed forging machine is 2500T.

[0074] S3, Finished product forging:

[0075] S3-1. The billet is treated at 970℃ for 110 minutes and then shaped and punched by a 1000KG air hammer to obtain a rough ring.

[0076] S3-2. The wool ring is treated at 960℃ for 110 minutes and then formed by expanding the hole with a 1000KG air hammer to obtain a ring-shaped blank.

[0077] S4. Heat treatment: Treat at 740℃ for 120 minutes, then immediately air cool to obtain a high-strength ring-shaped billet;

[0078] S5. Physical and chemical testing: The tensile strength, yield strength, elongation, and reduction of area of ​​the ring-shaped billet are tested.

[0079] S6. Rough machining: Rough turn all surfaces of the ring material, then cut it into sheets using wire EDM to obtain sheet material; leave a 2mm machining allowance on each side for rough turning, cut the sheet into sheets using wire EDM, and leave a 2mm allowance for the total thickness of the sheet;

[0080] S7. Special heat treatment: The sheet material is fastened with a flat die and annealed at 520℃~540℃ for 9 hours. It is then removed from the furnace at a temperature below 150℃ to obtain a billet with low internal stress, high flatness, and resistance to deformation during subsequent processing. The flat die includes a steel die with annular grooves, a flat clamp, and fastening screws. When fastening the sheet material, 10 cut sheets are stacked in a group in the steel die, and the flat clamp is fastened to the steel die with the fastening screws.

[0081] S8. Finishing: First, use an internal three-jaw chuck to support the inner diameter and finish machine the outer diameter of the ring to the specified dimensions. Then, use an external three-jaw chuck to support the outer diameter and finish machine the inner diameter and end face. The internal three-jaw chuck includes three arc-shaped plates with curvature matching the inner diameter of the ring material. The external three-jaw chuck includes three arc-shaped plates with curvature matching the outer diameter of the ring material.

[0082] S9. Dimensional Inspection: Use a marble platform and a dial indicator to inspect the dimensions, flatness, and parallelism of the finished product.

[0083] Example 4: A manufacturing process for a high-performance titanium brake disc blank, comprising the following steps:

[0084] S1. Raw material preparation: Grade 0 sponge titanium with N≤0.008, C≤0.008, H≤0.002, and hardness≤100HB was selected. Intermediate alloys ZrO2, TiO2, AlV55, and iron nails were added, and the mixture was smelted into φ600×L ingots using a vacuum arc remelting furnace. The composition percentage of the ingots was: Zr: 0.041%, V: 4.2%, Al: 6.1%, O: 0.16%, Fe: 0.17%, C: ≤0.03%, N: ≤0.02%, H: ≤0.01%, with the remainder being Ti.

[0085] S2, Forging of blanks:

[0086] S2-1. The ingot is forged by a hot forging press and treated at 1130℃~1180℃ for 360 minutes. After two upsetting and two drawing processes, a billet of 500×500×L is obtained. The hot forging press model is 6300T and the downsetting ratio is 2.2.

[0087] S2-2. The hot forging press is used to reverse the direction of the upsetting and drawing process again. The process is carried out at 1030℃~1080℃ for 320 minutes. After two upsetting and two drawing processes, a billet with a size of 500×500×L is obtained. The hot forging press model is 4500T and the downsetting ratio is 1.7.

[0088] S2-3. The billet is processed at 970℃~980℃ for 320 minutes using a high-speed forging machine, with one upsetting and one drawing, to obtain a φ180×L billet. The model of the high-speed forging machine is 2500T.

[0089] S3, Finished product forging:

[0090] S3-1. The billet is treated at 970℃ for 130 minutes and then shaped and punched by a 1000KG air hammer to obtain a rough ring.

[0091] S3-2. The wool ring is treated at 970℃ for 130 minutes and then formed by expanding the hole with a 1000KG air hammer to obtain a ring-shaped blank.

[0092] S4. Heat treatment: Treat at 750℃ for 120 minutes, then immediately air cool to obtain a high-strength ring-shaped billet;

[0093] S5. Physical and chemical testing: The tensile strength, yield strength, elongation, and reduction of area of ​​the ring-shaped billet are tested.

[0094] S6. Rough machining: Rough turn all surfaces of the ring material, then cut it into sheets using wire EDM to obtain sheet material; leave a 2mm machining allowance on each side for rough turning, cut the sheet into sheets using wire EDM, and leave a 2mm allowance for the total thickness of the sheet;

[0095] S7. Special heat treatment: The sheet material is fastened with a flat die and annealed at 520℃~540℃ for 10 hours. It is then removed from the furnace at a temperature below 150℃ to obtain a billet with low internal stress, high flatness, and resistance to deformation during subsequent processing. The flat die includes a steel die with annular grooves, a flat clamp, and fastening screws. When fastening the sheet material, 10 cut sheets are stacked in a group in the steel die, and the flat clamp is fastened to the steel die with the fastening screws.

[0096] S8. Finishing: First, use an internal three-jaw chuck to support the inner diameter and finish machine the outer diameter of the ring to the specified dimensions. Then, use an external three-jaw chuck to support the outer diameter and finish machine the inner diameter and end face. The internal three-jaw chuck includes three arc-shaped plates with curvature matching the inner diameter of the ring material. The external three-jaw chuck includes three arc-shaped plates with curvature matching the outer diameter of the ring material.

[0097] S9. Dimensional Inspection: Use a marble platform and a dial indicator to inspect the dimensions, flatness, and parallelism of the finished product.

[0098] Comparative example:

[0099] The manufacturing process of titanium brake disc blanks includes the following steps:

[0100] S1. Raw material preparation: Grade 0 sponge titanium with N≤0.008, C≤0.008, H≤0.002, and hardness≤100HB was selected, and aluminum blocks and iron nails were added. The mixture was then smelted into φ600×L ingots using a vacuum arc remelting furnace. The composition percentage of the ingots was: Al: 6.5%, O: 0.16%, Fe: 0.22%, C: ≤0.03%, N: ≤0.02%, H: ≤0.01%.

[0101] S2. Forging: The billet is processed at 970℃~980℃ for 350 minutes using a high-speed forging machine, with one upsetting and one drawing to obtain a φ180×L billet. The model of the high-speed forging machine is 2500T.

[0102] S3, Finished product forging:

[0103] S3-1. The billet is treated at 960℃ for 120 minutes and then shaped and punched by a 1000KG air hammer to obtain a rough ring.

[0104] S3-2. The wool ring is treated at 970℃ for 120 minutes and then formed by expanding the hole with a 1000KG air hammer to obtain a ring-shaped blank.

[0105] S4. Heat treatment: Treat at 750℃ for 120 minutes, then immediately air cool to obtain a high-strength ring-shaped billet;

[0106] S5. Physical and chemical testing: The tensile strength, yield strength, elongation, and reduction of area of ​​the ring-shaped billet are tested.

[0107] S6. Rough machining: Rough turn all surfaces of the ring material, then cut it into sheets using wire EDM to obtain sheet material; leave a 2mm machining allowance on each side for rough turning, cut the sheet into sheets using wire EDM, and leave a 2mm allowance for the total thickness of the sheet;

[0108] S7, finishing;

[0109] S8. Dimensional Inspection: Use a marble platform and a dial indicator to inspect the dimensions, flatness, and parallelism of the finished product.

[0110] The results of the physicochemical tests, flatness and parallelism tests of the finished products after heat treatment in Examples 1 to 4 and the comparative examples are as follows:

[0111]

[0112] The product standard requires a tensile strength of 895 MPa, a yield strength of 828 MPa, an elongation of 10.0%, and a reduction of area of ​​25.0%.

[0113] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A manufacturing process for a high-performance titanium brake disc blank, characterized in that, Includes the following steps: S1. Preparation of raw materials: Select grade 0 sponge titanium with N≤0.008, C≤0.008, H≤0.002 and hardness≤100HB, add intermediate alloys TiO2, ZrO2, AlV55 and iron nails, and melt it into ingots through a vacuum consumable arc furnace. S2, Forging of blanks: S2-1. The ingot is forged by a hot forging press and treated at 1130℃~1180℃ for 340~380min. After two upsetting and two drawing processes, the outer diameter is reduced to 5 / 6 of the original ingot. S2-2, The outer diameter remains unchanged after being upset and drawn again by a hot forging press at 1030℃~1080℃ for 280~320min. S2-3. The outer diameter is reduced to 3 / 10 of the original ingot by processing it in a high-speed forging machine at 970℃~980℃ for 280~320min, with one upsetting and one drawing. S3, Finished product forging: S3-1. Treat the billet at 960℃~980℃ for 110~130min, and shape and punch it with an air hammer to obtain a rough ring; S3-2. The wool ring is treated at 950℃~970℃ for 110~130min, and then formed by expanding the hole with an air hammer to obtain a ring-shaped blank. S4. Heat treatment: Treat at 740℃~760℃ for 110~130min, then immediately air cool to obtain high-strength ring-shaped billet; S5. Physical and chemical testing: The tensile strength, yield strength, elongation, and reduction of area of ​​the ring-shaped billet are tested. S6. Rough machining: Rough machining is performed on all surfaces of the ring material, followed by wire cutting to slice it into sheets; S7. Special heat treatment: The sheet material is fastened with a flat die and annealed at 520℃~540℃ for 8h~10h. It is then taken out of the furnace at below 150℃ to obtain a billet with low internal stress, high flatness, and is not easily deformed in later processing. S8. Finishing: First, use an internal three-jaw chuck to support the inner diameter and finish machine the outer diameter of the ring to the specified dimensions. Then, use an external three-jaw chuck to support the outer diameter and finish machine the inner diameter and end face. S9. Dimensional inspection.

2. The manufacturing process of a high-performance titanium brake disc blank according to claim 1, characterized in that, The composition percentage of the ingot is as follows: Zr: 0.03%~0.05%, V: 4.1%~4.3%, Al: 6.0%~6.2%, O: 0.15%~0.17%, Fe: 0.16%~0.18%, C: ≤0.03%, N: ≤0.02%, H: ≤0.01%, with the remainder being Ti.

3. The manufacturing process of a high-performance titanium brake disc blank according to claim 1, characterized in that, The hot forging press in step S2-1 is model 6300T, and the upsetting ratio is 1.8 to 2.

8.

4. The manufacturing process of a high-performance titanium brake disc blank according to claim 1, characterized in that, The hot forging press used in step S2-2 is a 4500T model, with a lower upsetting ratio of 1.7 to 1.

8.

5. The manufacturing process of a high-performance titanium brake disc blank according to claim 1, characterized in that, In step S6, rough machining leaves a 2mm machining allowance on one side, wire cutting slices are made, and the total thickness of the slices leaves a 2mm allowance.

6. The manufacturing process of a high-performance titanium brake disc blank according to claim 1, characterized in that, The flat plate tooling in step S7 includes a steel mold with annular grooves, a flat plate fixture, and fastening screws.

7. The manufacturing process of a high-performance titanium brake disc blank according to claim 6, characterized in that... In step S7, when securing the sheet material, stack 10 cut sheet materials together in a steel mold and secure the flat plate clamp to the steel mold with fastening screws.

8. The manufacturing process of a high-performance titanium brake disc blank according to claim 1, characterized in that... The three-jaw clamp in step S8 consists of three curved plates whose curvature matches the inner or outer diameter of the ring material.

9. The manufacturing process of a high-performance titanium brake disc blank according to claim 1, characterized in that... In step S9, a marble platform is used and a dial indicator is employed to inspect the dimensions, flatness, and parallelism of the finished product.

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