CN102489942B - Manufacturing method for seamless titanium drum for cathode roller - Google Patents
Manufacturing method for seamless titanium drum for cathode roller Download PDFInfo
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- CN102489942B CN102489942B CN 201110382759 CN201110382759A CN102489942B CN 102489942 B CN102489942 B CN 102489942B CN 201110382759 CN201110382759 CN 201110382759 CN 201110382759 A CN201110382759 A CN 201110382759A CN 102489942 B CN102489942 B CN 102489942B
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Abstract
The invention relates to a manufacturing method for a seamless titanium drum for a cathode roller. The manufacturing method comprises the steps of: selecting and using a titanium cast ingot block containing the following chemical constitutions in percentage by weight: Fe<0.06, O<0.06, C<0.02, N<0.02, H<0.01, each of other impurity element monomer<0.05 and other element content sum<0.2; chamberingand drawing out the selected and used titanium cast ingot block to obtain a titanium drum blank before ring rolling and forming; heating the lathed spun blank, and spinning for 3-4 passes to obtain primarily-formed titanium drum for the cathode roller; and performing annealing heat treatment on the primarily-formed titanium drum for the cathode roller to finally obtain the formed titanium drum for the cathode roller. The titanium drum manufactured by the method provided by the invention through reasonable parameter control has ellipticity of not more than 3mm, diameter tolerance of not more than 2mm, wall thickness tolerance of not more than 0.5mm and microscopic structure metallographic detection grain size of 6-8 level.
Description
Technical field
The invention belongs to the titanium material processing field, specifically a kind of manufacture method of large diameter thin wall seamless Ti tube.
Background technology
Cathode roll is the critical component of electrolytic copper foil equipment, is called as the heart of electrolytic copper foil.Cathode roll roll surface material will have very strong resistance to corrosion to electrolyte on the one hand, and the basis of Copper Foil growth will be provided on the other hand.Therefore require roll surface material corrosion resistance good, good conductivity and conduction are even, and microstructure is evenly tiny, and only in this way guarantee is produced even thickness, the high-quality Copper Foil of surfacing.Along with the development of manufacture of materials process technology, cathode roll roll surface material has been eliminated traditional stainless steel material at present, and what replace is the stronger pure titanium material of corrosion resistance.And the heterogeneous microstructure uniformity of titanium material is decided by the forming process of material, so the cathode roll roll surface becomes the key of making high-performance Copper Foil equipment with titanium cylinder manufacture method.Because cathode roll titanium cylinder diameter is generally all more than 1500mm, and wall thickness belongs to large diameter thin wall spare below 20mm.Guarantee geometric accuracy, guarantee again the performance of material structure, there are a lot of difficult points in the manufacturing of cathode roll titanium cylinder.
Two kinds of basic skills manufacturings of the normal employing of cathode roll titanium cylinder, a kind of is the moulding of titanium sheet material lap welding, a kind of is looping mill rolling spare rotary press modelling.Because at titanium cylinder existence weld seam vertically, the abnormal belt that exists a weld metal zone to produce on the Copper Foil of producing after the cathode roll assembling affect the Copper Foil total quality, so the cathode roll of seamless Ti tube roll surface holds more susceptible to user acceptance during the lap welding moulding.Compare with the titanium cylinder of girth sheets welding fabrication, seamless Ti tube is made complex manufacturing, parameters of technique process control is strict.The cathode roll roll surface with the seamless Ti tube Main Problems is at present:
A, raw material titanium ingot casting composition is required to satisfy the pure titanium of industrial one-level, there is not stricter requirement, because the pure titanium impurity content of one-level existence range is larger, as stipulating that in GB3620-2007 oxygen element content is less than 0.18%, iron content is less than 0.20%, wide in range like this composition requires not only to affect the performance of final titanium cylinder, and because impurity content causes the variation of titanium material phase transformation point, and then have influence on becoming more meticulous of hot procedure technological parameter.
B, pure titanium large diameter thin wall spare process complexity relate to a plurality of hot-working and spinning temperature process such as forging punching, reaming, looping mill rolling, and the process parameter variation range is narrow, and process is out of control very easily to cause whole titanium cylinder Quality Down, even scraps.The shear spinning wall thickness reduction forming process of titanium cylinder particularly, temperature parameter unreasonable very easily caused the defectives such as spinning process titanium cylinder cracking, buckling deformation, surface peeling.
Summary of the invention
Complicated for overcoming the pure titanium large diameter thin wall spare process that exists in the prior art, the changes in process parameters narrow range easily causes the deficiency of whole titanium cylinder Quality Down, the present invention proposes a kind of seamless titanium drum for cathode roller manufacture method.
Detailed process of the present invention is as follows:
The preparation of step 1, looping mill rolling blank
Titanium ingot casting piece heats in gas furnace, and titanium ingot casting piece is warming up to 550 ℃ of insulations 4 hours; With the programming rate of 80 ℃/h, titanium ingot casting piece is heated to 1020 ℃, be incubated 3 hours; Centre punch diameter at titanium ingot casting piece is the through hole of 250mm; Titanium ingot casting piece after the punching is naturally cooled to room temperature; Polishing is removed the surfaces externally and internally crackle, is scratched defective; Titanium ingot casting piece through grinding process places gas furnace to be heated to 550 ℃, and is incubated 4 hours, and then the programming rate with 80 ℃/h is heated to 930 ℃, and is incubated 2 hours; By the saddle support reaming aperture of the centre bore of titanium ingot casting piece is expanded to 800mm; Titanium ingot casting piece after the reaming again shove charge is heated to 930 ℃, is incubated pulling after 1 hour; Titanium ingot casting piece after reaming and the pulling is naturally cooled to room temperature, obtain the front blank of looping mill rolling moulding of titanium cylinder; The titanium cylinder blank that obtains is carried out surface finish;
The spinning blank of step 2, looping mill rolling processing titanium cylinder
Brush one deck waterglass on titanium cylinder blank surface; Blank before the titanium cylinder looping mill rolling is placed electric furnace, and be heated to 550 ℃ of insulations 3 hours; Heating rate with 80 ℃/h will be heated to 820 ℃ of titanium cylinder blanks, be incubated 3 hours; A fiery secondary ring is rolled to dimensional requirement on Ring Rolling Machine; In electric furnace titanium cylinder blank is carried out annealing in process behind the looping mill rolling, the temperature of annealing in process is 600 ℃; Be incubated 3 hours and come out of the stove, naturally cool to room temperature; Obtain the spinning blank of titanium cylinder;
Step 3, the processing of spinning blank
Remove the oxygen-rich layer of the spinning blank surface formation of titanium cylinder by machining;
Step 4, rotary press modelling cathode roll titanium cylinder
The process of rotary press modelling comprises 3～4 passage spinning; To place electric furnace to be heated to 600 ℃ through the spinning blank of Vehicle Processing, and be incubated after 1 hour, hot charging be on the spinning machine core; To the heating of spinning blank outer surface, after the temperature of spinning blank reaches 500 ℃, begin the spinning blank is carried out the first passage rotary pressing processing; After finishing the first passage spinning, spinning wheel withdraws from and is returned to initial spinning position, beginning second spinning; After finishing the second passage spinning, spinning wheel withdraws from and is returned to initial spinning position; Repeat the spinning process of the second passage spinning, until finish the rotary press modelling of cathode roll titanium cylinder; Withdraw from spinning wheel, stop the flame heating, drive lower titanium barrier part from spinning machine, obtain the cathode roll titanium cylinder of pre-profiling; In spinning process, keep spinning titanium cylinder temperature at 400-550 ℃; Every time attenuate amount is 7～10mm;
The annealing heat treatment of step 5, the complete titanium cylinder of spinning
Cathode roll titanium cylinder to pre-profiling is heated to 600 ℃, is incubated 2 hours, cools to the furnace below 300 ℃ and comes out of the stove; End and bare terminal end are revolved in rising of the cathode roll titanium cylinder of excision pre-profiling; Finally obtain the cathode roll titanium cylinder after the moulding.
The chemical composition (percentage by weight) of the titanium ingot casting piece that the present invention selects is: Fe＜0.06, and O＜0.06, C＜0.02, N＜0.02, H＜0.01, other impurity element is single＜and 0.05, other constituent content summation＜0.2.Through rational parameter control, the ovality≤3mm of the titanium cylinder that obtains, diameter tolerance≤3mm, wall thickness tolerance≤0.5mm, the microstructure metallographic detects 6～8 grades of grain sizes.
The specific embodiment
Embodiment one
The present embodiment is a kind of manufacture method of external diameter Ф 1500mm cathode roll titanium cylinder.
The present embodiment selects diameter to be 600mm, highly to make seamless titanium drum for cathode roller for the car light titanium ingot casting piece of 800mm.Used titanium ingot casting piece chemical composition (percentage by weight) is: Fe 0.02, and O 0.05, and C 0.01, and N 0.005, and H 0.001, and other impurity element is single＜and 0.05, other constituent content summation＜0.2.
Specific implementation process is as follows:
The preparation of step 1, looping mill rolling blank
Titanium ingot casting piece heats in gas furnace, and titanium ingot casting piece is warming up to 550 ℃ of insulations 4 hours.With the programming rate of 80 ℃/h, titanium ingot casting piece is heated to 1020 ℃, be incubated 3 hours.By hydraulic press the height of titanium ingot casting piece is depressed into 500mm.The centre punch diameter of the titanium ingot casting piece after flattening is the through hole of 250mm.The titanium ingot casting piece that has rushed behind the hole naturally cools to room temperature.
Cooled titanium ingot casting piece surface is checked, and polishing is removed the surfaces externally and internally crackle, is scratched defective.
Titanium ingot casting piece through grinding process places gas furnace to be heated to 550 ℃, and is incubated 4 hours, and then the programming rate with 80 ℃/h is heated to 930 ℃, and is incubated 2 hours.By the saddle support reaming aperture of the centre bore of titanium ingot casting piece is expanded to 800mm, expanded behind the hole titanium ingot casting piece again shove charge be heated to 930 ℃, be incubated 1 hour, the saddle support pulling is to being 720mm highly.Titanium ingot casting piece after reaming and the pulling is naturally cooled to room temperature, obtain the front blank material of looping mill rolling moulding of titanium cylinder, it is of a size of external diameter Ф 1020mm * internal diameter Ф 800mm * high 720mm.
The inner surface of the described circular material blank of Vehicle Processing, outer surface and end face are removed the oxide skin on circular material blank surface, the place that local Vehicle Processing is not in place, and polishing is removed, and burnishing part is round and smooth excessively, and depth-to-width ratio is less than 1/10th.Obtain the front blank of cathode roll titanium cylinder looping mill rolling.
The spinning blank of step 2, looping mill rolling processing titanium cylinder
Brush one deck waterglass on titanium cylinder blank surface.Blank before the titanium cylinder looping mill rolling is placed electric furnace, and be heated to 550 ℃ of insulations 3 hours; Heating rate with 80 ℃/h will be heated to 820 ℃ of titanium cylinder blanks, be incubated 3 hours.A fiery secondary ring is rolled to dimensional requirement on Ring Rolling Machine.In electric furnace titanium cylinder blank is carried out annealing in process behind the looping mill rolling, the temperature of annealing in process is 600 ℃; Be incubated 3 hours and come out of the stove, naturally cool to room temperature.Obtain the spinning blank of titanium cylinder, its appearance and size is external diameter Ф 1580mm * internal diameter Ф 1460mm * high 720mm.
Step 3, the processing of spinning blank
Adopt common machine adding method that the spinning blank is machined, to remove the oxygen-rich layer that the surface forms in the hot procedure fully, be of a size of external diameter Ф 1560mm * internal diameter Ф 1480mm * high 700mm after the Vehicle Processing
Step 4, rotary press modelling cathode roll titanium cylinder
The process of rotary press modelling comprises 3 passage spinning.
To place electric furnace to be heated to 600 ℃ through the spinning blank of Vehicle Processing, and be incubated after 1 hour, hot charging be on the spinning machine core.Adopt acetylene torch to being contained in the spinning blank outer surface heating on the spinning machine core, after the temperature of spinning blank reaches 500 ℃, begin the spinning blank is carried out the first passage rotary pressing processing the thick attenuate 10mm of the first passage spinning titanium barrel.After finishing the first passage spinning, spinning wheel withdraws from and is returned to initial spinning position, beginning second spinning.The second passage wall thickness reduction still is 10mm.After finishing the second passage spinning, spinning wheel withdraws from and is returned to initial spinning position, begins the 3rd road spinning.After three passage spinning are finished, withdraw from spinning wheel, stop the flame heating, drive lower titanium barrier part from spinning machine, obtain the cathode roll titanium cylinder of pre-profiling.In the spinning process, the feed ratio of spinning machine is 1, and rotating speed is 80 rev/mins; Keep spinning titanium cylinder temperature at 400-550 ℃.
The annealing heat treatment of the cathode roll titanium cylinder of step 5, pre-profiling
Cathode roll titanium cylinder to the pre-profiling that obtains in electric furnace carries out annealing in process.Place electric furnace to be heated to 600 ℃ in the cathode roll titanium cylinder of pre-profiling, be incubated 2 hours, cool to the furnace below 300 ℃ and come out of the stove.
End and bare terminal end are revolved in rising of the cathode roll titanium cylinder of excision pre-profiling.Finally obtain the cathode roll titanium cylinder after the moulding.
Physical dimension and the metallographic structure of the cathode roll titanium cylinder that detection the present embodiment obtains.Titanium cylinder middle straight line segment is partly carried out physical dimension detect, and carry out metal detection from the cut-out sampling.Actual measurement titanium cylinder straightway portion size precision is as follows: titanium tube length degree 1420mm, external diameter Ф 1501-1503mm, ovality 2mm, wall thickness 15.5-15.9mm.The microstructure metallographic detects 7～8 grades of grain sizes.
Embodiment two
The present embodiment is a kind of manufacture method of external diameter Ф 2000mm cathode roll titanium cylinder.
The present embodiment selects diameter to be 800mm, highly to make seamless titanium drum for cathode roller for the car light titanium ingot casting piece of 660mm.Used titanium ingot casting piece chemical composition (percentage by weight) is: Fe 0.05, and O 0.04, and C 0.01, and N 0.001, and H 0.001, and other impurity element is single＜and 0.05, other constituent content summation＜0.2.
Specific implementation process is as follows:
The preparation of step 1, looping mill rolling blank
Titanium ingot casting piece heats in gas furnace, and titanium ingot casting piece is warming up to 550 ℃ of insulations 4 hours.With the programming rate of 80 ℃/h, titanium ingot casting piece is heated to 1020 ℃, be incubated 3 hours.By hydraulic press the height of titanium ingot casting piece is depressed into 500mm.The centre punch diameter of the titanium ingot casting piece after flattening is the through hole of 250mm.The titanium ingot casting piece that has rushed behind the hole naturally cools to room temperature.
Cooled titanium ingot casting piece surface is checked, polishing is removed the surfaces externally and internally crackle, is scratched defective.
Titanium ingot casting piece through grinding process places gas furnace to be heated to 550 ℃, and is incubated 4 hours, and then the programming rate with 80 ℃/h is heated to 930 ℃, and is incubated 2 hours.By the saddle support reaming aperture of the centre bore of titanium ingot casting piece is expanded to 800mm, expanded behind the hole titanium ingot casting piece again shove charge be heated to 930 ℃, be incubated 1 hour, the saddle support pulling is to being 720mm highly.Titanium ingot casting piece after reaming and the pulling is naturally cooled to room temperature, obtain the front blank material of titanium cylinder looping mill rolling moulding, it is of a size of external diameter Ф 1100mm * internal diameter Ф 800mm * high 720mm.
The inner surface of the described circular material blank of Vehicle Processing, outer surface and end face are removed the oxide skin on circular material blank surface, the place that local Vehicle Processing is not in place, and polishing is removed, and burnishing part is round and smooth excessively, and depth-to-width ratio is less than 1/10th.Obtain the front blank of cathode roll titanium cylinder looping mill rolling.
The spinning blank of step 2, looping mill rolling processing titanium cylinder
Brush one deck waterglass on titanium cylinder blank surface.Blank before the titanium cylinder looping mill rolling is placed electric furnace, and be heated to 550 ℃ of insulations 3 hours; Heating rate with 80 ℃/h will be heated to 820 ℃ of titanium cylinder blanks, be incubated 3 hours.A fiery secondary ring is rolled to dimensional requirement on Ring Rolling Machine.In electric furnace titanium cylinder blank is carried out annealing in process behind the looping mill rolling, the temperature of annealing in process is 600 ℃; Be incubated 3 hours and come out of the stove, naturally cool to room temperature.Obtain the spinning blank of titanium cylinder, its appearance and size is external diameter Ф 2070mm * internal diameter Ф 1946mm * high 720mm.
Step 3, the processing of spinning blank
Adopt common machine adding method that the spinning blank is machined, to remove the oxygen-rich layer that the surface forms in the hot procedure fully, be of a size of external diameter Ф 2060mm * internal diameter Ф 1966mm * high 700mm after the Vehicle Processing
Step 4, rotary press modelling cathode roll titanium cylinder
The process of rotary press modelling comprises 4 passage spinning.
To place electric furnace to be heated to 600 ℃ through the spinning blank of Vehicle Processing, and be incubated after 1 hour, hot charging be on the spinning machine core.Adopt acetylene torch to being contained in the spinning blank outer surface heating on the spinning machine core, after the temperature of spinning blank reaches 500 ℃, begin the spinning blank is carried out the first passage rotary pressing processing the thick attenuate 8mm of the first passage spinning titanium barrel.After finishing the first passage spinning, spinning wheel withdraws from and is returned to initial spinning position, beginning second spinning.The second passage wall thickness reduction still is 8mm.After finishing the second passage spinning, spinning wheel withdraws from and is returned to initial spinning position, carries out third and fourth passage spinning.After four-pass spinning is finished, withdraw from spinning wheel, stop the flame heating, drive lower titanium barrier part from spinning machine, obtain the cathode roll titanium cylinder of pre-profiling.In the spinning process, the feed ratio of spinning machine is 1.5, and rotating speed is 60 rev/mins; Keep spinning titanium cylinder temperature at 400-550 ℃.
The annealing heat treatment of step 5, the complete titanium cylinder of spinning
Cathode roll titanium cylinder to the pre-profiling that obtains in electric furnace carries out annealing in process.Place electric furnace to be heated to 600 ℃ in the cathode roll titanium cylinder of pre-profiling, be incubated 2 hours, cool to the furnace below 300 ℃ and come out of the stove.
End and bare terminal end are revolved in rising of the cathode roll titanium cylinder of excision pre-profiling.Finally obtain the cathode roll titanium cylinder after the moulding.
Physical dimension and the metallographic structure of the cathode roll titanium cylinder that detection the present embodiment obtains.Titanium cylinder middle straight line segment is partly carried out physical dimension detect, and carry out metal detection from the cut-out sampling.Actual measurement titanium cylinder straightway portion size precision is as follows: titanium tube length degree 1440mm, external diameter Ф 1998-2000mm, ovality 2mm, wall thickness 14.8-15.1mm.The microstructure metallographic detects 7～8 grades of grain sizes.
Embodiment three
The present embodiment is a kind of manufacture method of Ф 2700mm cathode roll titanium cylinder.
The present embodiment selects diameter to be 800mm, highly to make seamless titanium drum for cathode roller for the car light titanium ingot casting piece of 900mm.Used titanium ingot casting piece chemical composition (percentage by weight) is: Fe 0.05, and O 0.06, and C 0.01, and N 0.004, and H 0.001, and other impurity element is single＜and 0.05, other constituent content summation＜0.2.
Specific implementation process is as follows:
The preparation of step 1, looping mill rolling blank
Titanium ingot casting piece heats in gas furnace, and titanium ingot casting piece is warming up to 550 ℃ of insulations 4 hours.With the programming rate of 80 ℃/h, titanium ingot casting piece is heated to 1020 ℃, be incubated 3 hours.By hydraulic press the height of titanium ingot casting piece is depressed into 600mm.The centre punch diameter of the titanium ingot casting piece after flattening is the through hole of 250mm.The titanium ingot casting piece that has rushed behind the hole naturally cools to room temperature.
Cooled titanium ingot casting piece surface is checked, polishing is removed the surfaces externally and internally crackle, is scratched defective.
Titanium ingot casting piece through grinding process places gas furnace to be heated to 550 ℃, and is incubated 4 hours, and then the programming rate with 80 ℃/h is heated to 930 ℃, and is incubated 2 hours.By the saddle support reaming aperture of the centre bore of titanium ingot casting piece is expanded to 800mm, expanded behind the hole titanium ingot casting piece again shove charge be heated to 930 ℃, be incubated 1 hour, the saddle support pulling is to being 720mm highly.Titanium ingot casting piece after reaming and the pulling is naturally cooled to room temperature, obtain the front blank material of titanium cylinder looping mill rolling moulding, it is of a size of external diameter Ф 1160mm * internal diameter Ф 800mm * high 720mm.
The inner surface of the described circular material blank of Vehicle Processing, outer surface and end face are removed the oxide skin on circular material blank surface, the place that local Vehicle Processing is not in place, and polishing is removed, and burnishing part is round and smooth excessively, and depth-to-width ratio is less than 1/10th.Obtain the front blank of cathode roll titanium cylinder looping mill rolling.
The spinning blank of step 2, looping mill rolling processing titanium cylinder
Brush one deck waterglass on titanium cylinder blank surface.Blank before the titanium cylinder looping mill rolling is placed electric furnace, and be heated to 550 ℃ of insulations 3 hours; Heating rate with 80 ℃/h will be heated to 820 ℃ of titanium cylinder blanks, be incubated 3 hours.A fiery secondary ring is rolled to dimensional requirement on Ring Rolling Machine.In electric furnace titanium cylinder blank is carried out annealing in process behind the looping mill rolling, the temperature of annealing in process is 600 ℃; Be incubated 3 hours and come out of the stove, naturally cool to room temperature.Obtain the spinning blank of titanium cylinder, its appearance and size is external diameter Ф 2795mm * internal diameter Ф 2660mm * high 720mm.
Step 3, the processing of spinning blank
Adopt common machine adding method that the spinning blank is machined, to remove the oxygen-rich layer that the surface forms in the hot procedure fully, be of a size of external diameter Ф 2769mm * internal diameter Ф 2680mm * high 700mm after the Vehicle Processing.
Step 4, rotary press modelling cathode roll titanium cylinder
The process of rotary press modelling comprises 4 passage spinning.
To place electric furnace to be heated to 600 ℃ through the spinning blank of Vehicle Processing, and be incubated after 1 hour, hot charging be on the spinning machine core.Adopt acetylene torch to being contained in the spinning blank outer surface heating on the spinning machine core, after the temperature of spinning blank reaches 500 ℃, begin the spinning blank is carried out the first passage rotary pressing processing the thick attenuate 7mm of the first passage spinning titanium barrel.After finishing the first passage spinning, spinning wheel withdraws from and is returned to initial spinning position, beginning second spinning.The second passage wall thickness reduction still is 7mm.After finishing the second passage spinning, spinning wheel withdraws from and is returned to initial spinning position, carries out third and fourth passage spinning.After four-pass spinning is finished, withdraw from spinning wheel, stop the flame heating, drive lower titanium barrier part from spinning machine, obtain the cathode roll titanium cylinder of pre-profiling.In the spinning process, the feed ratio of spinning machine is 2, and rotating speed is 50 rev/mins; Keep spinning titanium cylinder temperature at 400-550 ℃.
The annealing heat treatment of step 5, the complete titanium cylinder of spinning
Cathode roll titanium cylinder to the pre-profiling that obtains in electric furnace carries out annealing in process.Place electric furnace to be heated to 600 ℃ in the cathode roll titanium cylinder of pre-profiling, be incubated 2 hours, cool to the furnace below 300 ℃ and come out of the stove.
End and bare terminal end are revolved in rising of the cathode roll titanium cylinder of excision pre-profiling.Finally obtain the cathode roll titanium cylinder after the moulding.
Physical dimension and the metallographic structure of the cathode roll titanium cylinder that detection the present embodiment obtains.Titanium cylinder middle straight line segment is partly carried out physical dimension detect, and carry out metal detection from the cut-out sampling.Actual measurement titanium cylinder straightway portion size precision is as follows: titanium tube length degree 1440mm, external diameter Ф 2712-2715mm, ovality 3mm, wall thickness 15.3-15.6mm.The microstructure metallographic detects 6～8 grades of grain sizes.
Claims (1)
1. a seamless titanium drum for cathode roller manufacture method is characterized in that, detailed process is as follows:
The preparation of step 1, looping mill rolling blank
Titanium ingot casting piece heats in gas furnace, and titanium ingot casting piece is warming up to 550 ℃ of insulations 4 hours; With the programming rate of 80 ℃/h, titanium ingot casting piece is heated to 1020 ℃, be incubated 3 hours; Centre punch diameter at titanium ingot casting piece is the through hole of 250mm; Titanium ingot casting piece after the punching is naturally cooled to room temperature; Polishing is removed the surfaces externally and internally crackle, is scratched defective; Titanium ingot casting piece through grinding process places gas furnace to be heated to 550 ℃, and is incubated 4 hours, and then the programming rate with 80 ℃/h is heated to 930 ℃, and is incubated 2 hours; By the saddle support reaming aperture of the centre bore of titanium ingot casting piece is expanded to 800mm; Titanium ingot casting piece after the reaming again shove charge is heated to 930 ℃, is incubated pulling after 1 hour; Titanium ingot casting piece after reaming and the pulling is naturally cooled to room temperature, obtain the front blank of looping mill rolling moulding of titanium cylinder; The titanium cylinder blank that obtains is carried out surface finish;
The spinning blank of step 2, looping mill rolling processing titanium cylinder
Brush one deck waterglass on titanium cylinder blank surface; Blank before the titanium cylinder looping mill rolling is placed electric furnace, and be heated to 550 ℃ of insulations 3 hours; Heating rate with 80 ℃/h is heated to 820 ℃ with titanium cylinder blank, is incubated 3 hours; A fiery secondary ring is rolled to dimensional requirement on Ring Rolling Machine; In electric furnace titanium cylinder blank is carried out annealing in process behind the looping mill rolling, the temperature of annealing in process is 600 ℃; Be incubated 3 hours and come out of the stove, naturally cool to room temperature; Obtain the spinning blank of titanium cylinder;
Step 3, the processing of spinning blank
Remove the oxygen-rich layer of the spinning blank surface formation of titanium cylinder by Vehicle Processing;
Step 4, rotary press modelling cathode roll titanium cylinder
The process of rotary press modelling comprises 3～4 passage spinning; To place electric furnace to be heated to 600 ℃ through the spinning blank of Vehicle Processing, and be incubated after 1 hour, hot charging be on the spinning machine core; To the heating of spinning blank outer surface, after the temperature of spinning blank reaches 500 ℃, begin the spinning blank is carried out the first passage rotary pressing processing; After finishing the first passage spinning, spinning wheel withdraws from and is returned to initial spinning position, beginning second spinning; After finishing the second passage spinning, spinning wheel withdraws from and is returned to initial spinning position; Repeat the spinning process of the second passage spinning, until finish the rotary press modelling of cathode roll titanium cylinder; Withdraw from spinning wheel, stop the flame heating, unload the titanium barrier part from spinning machine, obtain the cathode roll titanium cylinder of pre-profiling; In spinning process, keep spinning titanium cylinder temperature at 400-550 ℃; Every time attenuate amount is 7～10mm;
The annealing heat treatment of step 5, the complete titanium cylinder of spinning
Cathode roll titanium cylinder to pre-profiling is heated to 600 ℃, is incubated 2 hours, cools to the furnace below 300 ℃ and comes out of the stove; End and bare terminal end are revolved in rising of the cathode roll titanium cylinder of excision pre-profiling; Finally obtain the cathode roll titanium cylinder after the moulding.
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