CN113265603A - Preparation method of titanium plate for deep drawing - Google Patents
Preparation method of titanium plate for deep drawing Download PDFInfo
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- CN113265603A CN113265603A CN202110567117.8A CN202110567117A CN113265603A CN 113265603 A CN113265603 A CN 113265603A CN 202110567117 A CN202110567117 A CN 202110567117A CN 113265603 A CN113265603 A CN 113265603A
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- titanium
- annealing
- rolling
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- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 239000010936 titanium Substances 0.000 title claims abstract description 52
- 229910052719 titanium Inorganic materials 0.000 title claims abstract description 51
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 238000000137 annealing Methods 0.000 claims abstract description 45
- 238000005238 degreasing Methods 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000005097 cold rolling Methods 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 239000000126 substance Substances 0.000 claims abstract description 7
- 238000005098 hot rolling Methods 0.000 claims abstract description 5
- 238000005096 rolling process Methods 0.000 claims description 9
- 238000005554 pickling Methods 0.000 claims description 7
- 239000003921 oil Substances 0.000 claims description 6
- 238000004321 preservation Methods 0.000 claims description 6
- 238000005422 blasting Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 239000010731 rolling oil Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000001276 controlling effect Effects 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 229910001069 Ti alloy Inorganic materials 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
- C21D1/773—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material under reduced pressure or vacuum
-
- 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
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C14/00—Alloys based on titanium
-
- 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
- C22F1/02—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention provides a preparation method of a titanium plate for deep drawing, which comprises the steps of material selection, plate blank hot rolling and coiling, degreasing and deoiling, annealing heat treatment by using a hood-type vacuum annealing furnace and the like. The method comprises the following steps of (1) regulating and controlling chemical components of a titanium ingot, increasing annealing temperature (annealing is performed at the annealing temperature of 860 ℃), and (2) manufacturing a hardened layer with the surface of 0.1-2.0 microns through cold rolling and annealing, so that the titanium sheet has excellent processability, the strength is improved, the plasticity anisotropy is reduced, and the elongation is influenced by the existence of the hardened layer; but in the step (3), firstly removing oil stains on the surface of the cold-rolled titanium strip, then carrying out vacuum annealing, and removing the hardened layer of 0.1-2.0 microns in the step (2), just because no oxidized hard layer exists, the elongation of the titanium sheet is improved, the elongation can reach 60%, and the cupping value is 10.2-11.0 mm.
Description
Technical Field
The invention belongs to the field of material processing, and particularly relates to a preparation method for a titanium plate for deep drawing.
Background
Titanium and titanium alloys are increasingly widely used in the fields of energy, war industry, aerospace and the like due to small density, high specific strength and good corrosion resistance. The TA1 thin strip which is subjected to hot rolling and cold rolling annealing is mainly used for condensers, plate heat exchangers and the like of power stations and the manufacturing field of household deep drawing titanium products, and the yield accounts for more than half of the processed material.
The manufacturing process flow of the conventional thin titanium plate is as follows: titanium sponge ingot → cogging → multi-pass rolling → 650 ℃ annealing for 60min → acid and alkali washing to remove oxide layer → finished product; wherein the rolling annealing step is repeatedly carried out for a plurality of times before entering the next step. The titanium sponge meets the GB/T3620-94 titanium and titanium alloy brand and chemical composition and component allowable deviation, unidirectional rolling with unchanged rolling direction and rolling surface is adopted for rolling, the annealing temperature is 650-700 ℃, and the time is about 60 min.
In the production and manufacture of titanium plates, particularly titanium sheets have higher requirements on deep drawing performance, but the titanium sheets manufactured by the conventional method have plasticity or stamping tensile performance which cannot meet the requirements of the titanium plates (GB/T14845-93) for plate heat exchangers in the ship industry, and the titanium plates often have the situation of fracture due to insufficient ductility in the stamping forming process.
Disclosure of Invention
The invention aims to provide a preparation method for deep-drawing a titanium plate, which can effectively improve the deep-drawing performance of a titanium coil and completely meet the requirements of the titanium coil for a plate heat exchanger.
Based on the purpose of the invention, the invention provides a preparation method for deep-drawing a titanium plate, which comprises the following steps:
selecting materials in the step (1): selecting a titanium ingot as a plate blank, wherein the impurity chemical components comprise the following components in percentage by weight: 0.015-0.018% of Fe, 0.035-0.06% of O, 0.004-0.007% of N, 0.006-0.011% of C and 0.001% of H;
and (2) hot rolling and coiling the plate blank, which specifically comprises the following steps: preserving the heat of the plate blank prepared in the step (1) for 8 hours at 1020-1050 ℃ to obtain a preheated plate blank; pressing into 200 x 1050 x 6000mm square blocks by an oil press, processing to form a smooth blank with a defect-free surface, heating the blank to 860 ℃, cogging and rolling by a two-frame four-roller incremental rail machine, annealing, pickling, and cold rolling by a DMS twenty-roller mill to form a titanium coiled material;
and (3) degreasing and deoiling the titanium coil obtained in the step (2), and then carrying out annealing heat treatment by using a hood-type vacuum annealing furnace, wherein the annealing temperature is raised in stages, wherein: the annealing heat preservation temperature is 680 ℃; the heat preservation time is 6 h;
and (4) carrying out flattening and extending treatment on the annealed titanium coil obtained in the step (3) by adopting a flattening roller to obtain a finished product, wherein: the finished product has a cupping value of 10.2-11.0mm and an elongation of 60%.
Preferably, the annealing in the step (2) comprises the following specific steps: and carrying out on-line annealing at the temperature of 720-860 ℃ by adopting a continuous annealing furnace to obtain the annealed titanium coil.
Preferably, the acid washing in the step (2) comprises the following specific steps: and removing black oxide skin on the surface by using a shot blasting machine and a pickling line.
Preferably, the degreasing and oil removing in the step (3) specifically comprises the following steps: and cleaning the cold-rolled coil with the finished thickness by adopting alkaline degreasing fluid to remove rolling oil on the surface of the titanium coil.
Compared with the prior art, the invention has the beneficial effects that: the method comprises the following steps of (1) regulating and controlling chemical components of a titanium ingot, increasing annealing temperature (annealing is performed at the annealing temperature of 860 ℃), and (2) manufacturing a hardened layer with the surface of 0.1-2.0 microns through cold rolling and annealing, so that the titanium sheet has excellent processability, the strength is improved, the plasticity anisotropy is reduced, and the elongation is influenced by the existence of the hardened layer; but in the step (3), firstly removing oil stains on the surface of the cold-rolled titanium strip, then carrying out vacuum annealing, and removing the hardened layer of 0.1-2.0 microns in the step (2), just because no oxidized hard layer exists, the elongation of the titanium sheet is improved, the elongation can reach 60%, and the cupping value is 10.2-11.0 mm.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to specific embodiments. The following examples are merely illustrative and explanatory of the present invention and should not be construed as limiting the scope of the invention. All the technologies realized based on the above-mentioned contents of the present invention are covered in the protection scope of the present invention.
Unless otherwise indicated, the raw materials and reagents used in the following examples are all commercially available products or can be prepared by known methods.
Example 1 selects a commercially available titanium ingot, and the material selection is as follows: selecting a titanium ingot as a plate blank, wherein the impurity chemical components comprise the following components in percentage by weight: 0.015% of Fe, 0.06% of O, 0.005% of N, 0.01% of C and 0.001% of H;
and (2) hot rolling and coiling the plate blank, which specifically comprises the following steps: preserving the temperature of the plate blank prepared in the step (1) for 8 hours at 1020 ℃ to obtain a preheated plate blank; pressing into 200 x 1050 x 6000mm square blocks by an oil press, processing to form a smooth blank with a defect-free surface, heating the blank to 860 ℃, cogging and rolling by a two-frame four-roller incremental rail machine, annealing, pickling, and cold rolling by a DMS twenty-roller mill to form a titanium coiled material;
and (3) degreasing and deoiling the titanium coil obtained in the step (2), and then carrying out annealing heat treatment by using a hood-type vacuum annealing furnace, wherein the annealing temperature is raised in stages, wherein: the annealing heat preservation temperature is 680 ℃; the heat preservation time is 6 h;
and (4) carrying out flattening and extending treatment on the annealed titanium coil obtained in the step (3) by adopting a flattening roller to obtain a finished product, wherein: the finished product has a cupping value of 10.2-11.0mm and an elongation of 60%.
Wherein, the annealing in the step (2) comprises the following specific steps: and carrying out on-line annealing at 860 ℃ by adopting a continuous annealing furnace to obtain the annealed titanium coil.
Wherein, the acid washing in the step (2) comprises the following specific steps: and removing black oxide skin on the surface by using a shot blasting machine and a pickling line.
The degreasing and deoiling in the step (3) comprises the following specific steps: and cleaning the cold-rolled coil with the finished thickness by adopting alkaline degreasing fluid to remove rolling oil on the surface of the titanium coil.
The invention has the innovation points that: the method comprises the following steps of (1) regulating and controlling chemical components of a titanium ingot, increasing annealing temperature (annealing is performed at the annealing temperature of 860 ℃), and (2) manufacturing a hardened layer with the surface of 0.1-2.0 microns through cold rolling and annealing, so that the titanium sheet has excellent processability, the strength is improved, the plasticity anisotropy is reduced, and the elongation is influenced by the existence of the hardened layer; but in the step (3), firstly removing oil stains on the surface of the cold-rolled titanium strip, then carrying out vacuum annealing, and removing the hardened layer of 0.1-2.0 microns in the step (2), just because no oxidized hard layer exists, the elongation of the titanium sheet is improved, the elongation can reach 60%, and the cupping value is 10.2-11.0 mm.
Claims (4)
1. A preparation method for deep-drawing titanium plates is characterized by comprising the following steps:
selecting materials in the step (1): selecting a titanium ingot as a plate blank, wherein the impurity chemical components comprise the following components in percentage by weight: 0.015-0.018% of Fe, 0.035-0.06% of O, 0.004-0.007% of N, 0.006-0.011% of C and 0.001% of H;
and (2) hot rolling and coiling the plate blank, which specifically comprises the following steps: preserving the heat of the plate blank prepared in the step (1) for 8 hours at 1020-1050 ℃ to obtain a preheated plate blank; pressing into 200 x 1050 x 6000mm square blocks by an oil press, processing to form a smooth blank with a defect-free surface, heating the blank to 860 ℃, cogging and rolling by a two-frame four-roller incremental rail machine, annealing, pickling, and cold rolling by a DMS twenty-roller mill to form a titanium coiled material;
and (3) degreasing and deoiling the titanium coil obtained in the step (2), and then carrying out annealing heat treatment by using a hood-type vacuum annealing furnace, wherein the annealing temperature is raised in stages, wherein: the annealing heat preservation temperature is 680 ℃; the heat preservation time is 6 h;
and (4) carrying out flattening and extending treatment on the annealed titanium coil obtained in the step (3) by adopting a flattening roller to obtain a finished product, wherein: the finished product has a cupping value of 10.2-11.0mm and an elongation of 60%.
2. The method for preparing the deep-drawn titanium plate according to claim 1, wherein the annealing in the step (2) comprises the following specific steps: and carrying out on-line annealing at 680-720 ℃ by adopting a continuous annealing furnace to obtain the annealed titanium coil.
3. The method for preparing the deep drawing titanium plate is characterized in that the pickling in the step (2) comprises the following specific steps: and removing black oxide skin on the surface by using a shot blasting machine and a pickling line.
4. The method for preparing the deep drawing titanium plate according to claim 1, wherein the degreasing and deoiling in the step (3) comprises the following specific steps: and cleaning the cold-rolled coil with the finished thickness by adopting alkaline degreasing fluid to remove rolling oil on the surface of the titanium coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110567117.8A CN113265603A (en) | 2021-05-24 | 2021-05-24 | Preparation method of titanium plate for deep drawing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110567117.8A CN113265603A (en) | 2021-05-24 | 2021-05-24 | Preparation method of titanium plate for deep drawing |
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| Publication Number | Publication Date |
|---|---|
| CN113265603A true CN113265603A (en) | 2021-08-17 |
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| CN202110567117.8A Pending CN113265603A (en) | 2021-05-24 | 2021-05-24 | Preparation method of titanium plate for deep drawing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115874129A (en) * | 2023-01-09 | 2023-03-31 | 湖南湘投金天钛金属股份有限公司 | Preparation method of titanium strip coil for plate heat exchanger |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6143241A (en) * | 1999-02-09 | 2000-11-07 | Chrysalis Technologies, Incorporated | Method of manufacturing metallic products such as sheet by cold working and flash annealing |
| JP2002194591A (en) * | 2000-12-21 | 2002-07-10 | Nippon Steel Corp | Titanium sheet and manufacturing method therefor |
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| CN111394669A (en) * | 2020-04-26 | 2020-07-10 | 北京科技大学 | Manufacturing method for reducing anisotropy of pure titanium thin plate strip for deep drawing |
| CN112718864A (en) * | 2020-12-15 | 2021-04-30 | 湖南湘投金天钛金属股份有限公司 | Production method for improving deep drawing performance of titanium strip coil for nuclear power plate heat exchanger |
-
2021
- 2021-05-24 CN CN202110567117.8A patent/CN113265603A/en active Pending
Patent Citations (6)
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| US6143241A (en) * | 1999-02-09 | 2000-11-07 | Chrysalis Technologies, Incorporated | Method of manufacturing metallic products such as sheet by cold working and flash annealing |
| JP2002194591A (en) * | 2000-12-21 | 2002-07-10 | Nippon Steel Corp | Titanium sheet and manufacturing method therefor |
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Non-Patent Citations (2)
| Title |
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| 刘正乔等: "宽幅TC4钛合金带卷的研制", 《连铸》 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115874129A (en) * | 2023-01-09 | 2023-03-31 | 湖南湘投金天钛金属股份有限公司 | Preparation method of titanium strip coil for plate heat exchanger |
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Application publication date: 20210817 |