US20200377988A1 - Method for heating blank for rolling production - Google Patents
Method for heating blank for rolling production Download PDFInfo
- Publication number
- US20200377988A1 US20200377988A1 US16/891,106 US202016891106A US2020377988A1 US 20200377988 A1 US20200377988 A1 US 20200377988A1 US 202016891106 A US202016891106 A US 202016891106A US 2020377988 A1 US2020377988 A1 US 2020377988A1
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- US
- United States
- Prior art keywords
- chamber
- blank
- heating furnace
- heating
- temperature
- Prior art date
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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
- 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
- B21B1/22—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 plates, strips, bands or sheets of indefinite length
-
- 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
- B21B45/004—Heating the product
-
- 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
- B21B1/22—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 plates, strips, bands or sheets of indefinite length
- B21B2001/225—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 plates, strips, bands or sheets of indefinite length by hot-rolling
Definitions
- the disclosure relates to a method for heating a blank for rolling production.
- the methods for heating a blank for rolling production include continuous furnace heating, box-type resistance furnace heating, and induction heating.
- the abovementioned heating, including preheating and soaking, is implemented in one furnace.
- the disclosure provides a method for heating a blank in a first heating furnace and a second heating furnace, the first heating furnace comprising a first chamber and a second chamber communicating with the first chamber, and the method comprising:
- the first chamber and the second chamber are disposed side by side, and the first chamber communicates with the second chamber via a heat pipe so that waste heat in the second chamber can be transported to the first chamber.
- the blank is introduced in and out of the second chamber of the first heating furnace along the axial direction of the first heating furnace.
- a plurality of blanks is consecutively heated in the first heating furnace and the second heating furnace; the plurality of blanks in the first heating furnace is continuously disposed end to end; and the plurality of blanks in the second heating furnace is spaced and parallel to each other.
- FIG. 1 is a schematic diagram of a method for heating a blank in accordance with one embodiment of the disclosure
- FIG. 2 is a schematic diagram of a first heating furnace in accordance with one embodiment of the disclosure.
- FIG. 3 is a schematic diagram of a second heating furnace in accordance with one embodiment of the disclosure.
- a method for heating a blank for rolling production is implemented in a first heating furnace 1 and a second heating furnace 2 , the first heating furnace 1 comprising a first chamber 11 and a second chamber 12 communicating with the first chamber 11 , and the method comprising:
- the first heating furnace and the second heating furnace are a continuous heating furnace.
- the first heating furnace comprises two chambers and the blank can move in the first heating furnace bidirectionally.
- the first chamber communicates with the second chamber.
- the temperature of the second chamber is higher than that of the first temperature, so that the second chamber can supply heat for the first chamber.
- the first heating furnace is disposed on the rolling production line, so that the blank can directly enter the rolling production line after being preprocessed in the first heating furnace.
- the first heating furnace, the second heating furnace and the rolling mill are consecutively connected through conveyors and each is equipped with a pusher 5 , so that the blank can be transferred between the first heating furnace, the second heating furnace and the rolling mill 3 .
- the specific position of the two chambers can be adjusted according to the actual situation. As shown in FIG. 1 , the two chambers are disposed in one plane. As shown in FIGS. 2 and 3 , the two chambers are disposed in two parallel planes, respectively, and the first chamber is disposed below the second chamber. In such a situation, a hoister is employed to lift the heated blank in the first chamber 11 to the second heating furnace 2 .
- the moving speed of the blank in the first chamber and the second chamber can be adjusted as needed; the heating temperature and the rolling temperature can be adjusted according to the specific production process.
- Light alloy tube rolling production blank material: light alloy 6063, blank size: ⁇ 180 ⁇ 800 mm; final product: light alloy seamless pipe: ⁇ 180 ⁇ 10 mm; rolling mill: three-roll cone piercer.
- the blank is introduced to and out of the first/second chamber along the axial direction of the first/second chamber, and introduced to and out of the second heating chamber from one side of the second heating chamber.
- the second chamber is disposed on the side of the rolling line, and the blank is pushed into the rolling line via the pusher 5 .
- the set temperature of the second chamber of the first heating furnace was 650° C.
- the set temperature of the second heating furnace was 550° C.
- the blank was introduced to the first chamber and heated therein for 15 min from normal temperature to 200° C.
- the blank was then transferred to the second heating furnace, heated to 550° C. and maintained for 30 min. Thereafter, the blank was transferred to the second chamber and heated to 650° C., and then was rolled by a rolling mill to yield light alloy seamless pipes of ⁇ 180 ⁇ 10 mm.
- Titanium alloy bar rolling production blank material: TC4 titanium alloy, blank size: ⁇ 80 ⁇ 1500 mm; final product: titanium bars having a diameter of 20 mm; rolling mill: three-roll bar continuous rolling mill.
- the blank is introduced to the first chamber from one side of the first chamber, and leaves the first chamber along the axial direction of the first chamber.
- the blank is introduced to and out of the second heating chamber from one side of the second heating chamber.
- the blank is introduced to and out of the second chamber along the axial direction of the second chamber.
- the second chamber of the first heating furnace is disposed on the rolling line, and after leaving the first heating furnace, the blank travels a short distance, and enters the rolling mill.
- the set temperature of the second chamber of the first heating furnace was 900° C.
- the set temperature of the second heating furnace was 750° C.
- the blank was introduced to the first chamber and heated therein for 8 min from normal temperature to 200° C.
- the blank was then transferred to the second heating furnace, heated to 750° C. and maintained for 45 min. Thereafter, the blank was transferred to the second chamber and heated to 900° C., and then was rolled by a rolling mill to yield titanium bars having a diameter of 20 mm.
- the first heating furnace comprises the first chamber and the second chamber communicating with the first chamber, so that the heated blank radiates heat in the second chamber and the heat is transferred to the first chamber, and thus the waste heat is utilized, reducing the energy consumption in the process of blank heating.
- the temperature in the first chamber and the second chamber and in the second heating furnace can be detected and adjusted at any time, so that the blank temperature can be controlled accurately, which can meet the requirements of different materials and different rolling processes for the rolling temperature.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Metal Rolling (AREA)
Abstract
Description
- Pursuant to 35 U.S.C.§ 119 and the Paris Convention Treaty, this application claims foreign priority to Chinese Patent Application No. 201910478340.8 filed Jun. 3, 2019, the contents of which, including any intervening amendments thereto, are incorporated herein by reference. Inquiries from the public to applicants or assignees concerning this document or the related applications should be directed to: Matthias Scholl P.C., Attn.: Dr. Matthias Scholl Esq., 245 First Street, 18th Floor, Cambridge, Mass. 02142.
- The disclosure relates to a method for heating a blank for rolling production.
- In the related art, the methods for heating a blank for rolling production include continuous furnace heating, box-type resistance furnace heating, and induction heating. The abovementioned heating, including preheating and soaking, is implemented in one furnace.
- The disclosure provides a method for heating a blank in a first heating furnace and a second heating furnace, the first heating furnace comprising a first chamber and a second chamber communicating with the first chamber, and the method comprising:
-
- 1) heating the blank in the first chamber to a temperature of less than 300° C.;
- 2) transferring the blank heated in the first chamber to the second heating furnace, and heating the blank to a temperature of between 350° C. and 850° C., where a temperature of the second heating furnace is detected using a thermocouple, and the temperature of the blank is detected by an optical thermometer;
- 3) transferring the blank heated in the second heating furnace to the second chamber, continuously heating the blank in the second chamber to increase the temperature of the blank in a range of 0-200° C., and measuring the temperature of the blank using a contact thermometer, where an accuracy of temperature adjustment of the blank in second chamber of the first heating furnace is ±10° C.; and
- 4) transferring the blank from 3) to a rolling mill.
- The first chamber and the second chamber are disposed side by side, and the first chamber communicates with the second chamber via a heat pipe so that waste heat in the second chamber can be transported to the first chamber.
- The blank is introduced in and out of the second chamber of the first heating furnace along the axial direction of the first heating furnace.
- A plurality of blanks is consecutively heated in the first heating furnace and the second heating furnace; the plurality of blanks in the first heating furnace is continuously disposed end to end; and the plurality of blanks in the second heating furnace is spaced and parallel to each other.
-
FIG. 1 is a schematic diagram of a method for heating a blank in accordance with one embodiment of the disclosure; -
FIG. 2 is a schematic diagram of a first heating furnace in accordance with one embodiment of the disclosure; and -
FIG. 3 is a schematic diagram of a second heating furnace in accordance with one embodiment of the disclosure. - In the drawings, the following reference numbers are used: 1. First heating furnace; 2. Second heating furnace; 11. First chamber; 12. Second chamber; 3. Rolling mill; 5.1. First pusher; 5.2. Second pusher; 5.3. Third pusher; 5.4. Fourth pusher; 6. Blank; 7. Heat pipe.
- To further illustrate the disclosure, embodiments detailing a method for heating a blank are described below. It should be noted that the following embodiments are intended to describe and not to limit the disclosure.
- As shown in
FIGS. 1-3 , a method for heating a blank for rolling production is implemented in afirst heating furnace 1 and asecond heating furnace 2, thefirst heating furnace 1 comprising afirst chamber 11 and asecond chamber 12 communicating with thefirst chamber 11, and the method comprising: - 1) heating the blank 6 in the
first chamber 11 to a temperature of less than 300° C.; where temperature of the blank is determined according to the retention time of the blank 6 in thefirst chamber 11; thefirst chamber 11 and thesecond chamber 12 are disposed side by side, and the first chamber communicates with the second chamber via aheat pipe 7 so that waste heat in the second chamber can be transported to the first chamber; - 2) transferring the blank heated in the first chamber to the second heating furnace, and heating the blank to a temperature of between 350° C. and 850° C., where a temperature of the second heating furnace is detected using a thermocouple, and the temperature of the blank is detected by an optical thermometer; the temperature of the second heating furnace, the heating time and the retention time of the blank at a certain temperature are determined according to the production process requirements of the blank;
- 3) transferring the blank heated in the second heating furnace to the second chamber, continuously heating the blank in the second chamber to increase the temperature of the blank in a range of 0-200° C., and measuring the temperature of the blank using a contact thermometer, where an accuracy of temperature adjustment of the blank in second chamber of the first heating furnace is ±10° C.; and
- 4) transferring the blank from 3) to a rolling mill.
- The first heating furnace and the second heating furnace are a continuous heating furnace. The first heating furnace comprises two chambers and the blank can move in the first heating furnace bidirectionally.
- The first chamber communicates with the second chamber. The temperature of the second chamber is higher than that of the first temperature, so that the second chamber can supply heat for the first chamber.
- The first heating furnace is disposed on the rolling production line, so that the blank can directly enter the rolling production line after being preprocessed in the first heating furnace.
- The first heating furnace, the second heating furnace and the rolling mill are consecutively connected through conveyors and each is equipped with a pusher 5, so that the blank can be transferred between the first heating furnace, the second heating furnace and the rolling
mill 3. The specific position of the two chambers can be adjusted according to the actual situation. As shown inFIG. 1 , the two chambers are disposed in one plane. As shown inFIGS. 2 and 3 , the two chambers are disposed in two parallel planes, respectively, and the first chamber is disposed below the second chamber. In such a situation, a hoister is employed to lift the heated blank in thefirst chamber 11 to thesecond heating furnace 2. - The moving speed of the blank in the first chamber and the second chamber can be adjusted as needed; the heating temperature and the rolling temperature can be adjusted according to the specific production process.
- Light alloy tube rolling production, blank material: light alloy 6063, blank size: Φ180×800 mm; final product: light alloy seamless pipe: Φ180×10 mm; rolling mill: three-roll cone piercer.
- The blank is introduced to and out of the first/second chamber along the axial direction of the first/second chamber, and introduced to and out of the second heating chamber from one side of the second heating chamber. The second chamber is disposed on the side of the rolling line, and the blank is pushed into the rolling line via the pusher 5.
- The set temperature of the second chamber of the first heating furnace was 650° C. The set temperature of the second heating furnace was 550° C. The blank was introduced to the first chamber and heated therein for 15 min from normal temperature to 200° C. The blank was then transferred to the second heating furnace, heated to 550° C. and maintained for 30 min. Thereafter, the blank was transferred to the second chamber and heated to 650° C., and then was rolled by a rolling mill to yield light alloy seamless pipes of Φ180×10 mm.
- Titanium alloy bar rolling production, blank material: TC4 titanium alloy, blank size: Φ80×1500 mm; final product: titanium bars having a diameter of 20 mm; rolling mill: three-roll bar continuous rolling mill.
- The blank is introduced to the first chamber from one side of the first chamber, and leaves the first chamber along the axial direction of the first chamber. The blank is introduced to and out of the second heating chamber from one side of the second heating chamber. The blank is introduced to and out of the second chamber along the axial direction of the second chamber.
- The second chamber of the first heating furnace is disposed on the rolling line, and after leaving the first heating furnace, the blank travels a short distance, and enters the rolling mill.
- The set temperature of the second chamber of the first heating furnace was 900° C. The set temperature of the second heating furnace was 750° C. The blank was introduced to the first chamber and heated therein for 8 min from normal temperature to 200° C. The blank was then transferred to the second heating furnace, heated to 750° C. and maintained for 45 min. Thereafter, the blank was transferred to the second chamber and heated to 900° C., and then was rolled by a rolling mill to yield titanium bars having a diameter of 20 mm.
- Compared with the related art, the first heating furnace comprises the first chamber and the second chamber communicating with the first chamber, so that the heated blank radiates heat in the second chamber and the heat is transferred to the first chamber, and thus the waste heat is utilized, reducing the energy consumption in the process of blank heating.
- The temperature in the first chamber and the second chamber and in the second heating furnace can be detected and adjusted at any time, so that the blank temperature can be controlled accurately, which can meet the requirements of different materials and different rolling processes for the rolling temperature.
- It will be obvious to those skilled in the art that changes and modifications may be made, and therefore, the aim in the appended claims is to cover all such changes and modifications.
Claims (4)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910478340.8A CN110270597B (en) | 2019-06-03 | 2019-06-03 | Blank heating method in rolling production process |
CN201910478340.8 | 2019-06-03 |
Publications (1)
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US20200377988A1 true US20200377988A1 (en) | 2020-12-03 |
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US16/891,106 Abandoned US20200377988A1 (en) | 2019-06-03 | 2020-06-03 | Method for heating blank for rolling production |
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US (1) | US20200377988A1 (en) |
CN (1) | CN110270597B (en) |
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CN114367536A (en) * | 2022-01-06 | 2022-04-19 | 上海轩田工业设备有限公司 | Rolling processing equipment and method for radioactive material plate |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106868290A (en) * | 2017-03-23 | 2017-06-20 | 东北大学 | Al alloy parts heat treatment experiment method |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS53147612A (en) * | 1977-05-30 | 1978-12-22 | Kawasaki Steel Co | Method of uniformly heating steel block utillizing heat contained within demolded steel block |
US5314169A (en) * | 1992-08-26 | 1994-05-24 | A. C. Leadbetter & Son, Inc. | Method and apparatus for heat treating elongate metallic products |
CN201083461Y (en) * | 2007-07-19 | 2008-07-09 | 宝山钢铁股份有限公司 | Heat accumulation type bar plate heating stove |
CN101441037A (en) * | 2007-11-21 | 2009-05-27 | 中冶赛迪工程技术股份有限公司 | Annular furnace and annular furnace heat supply process |
CN101956057B (en) * | 2010-06-13 | 2012-06-06 | 浙江佰耐钢带有限公司 | Steel band thermal treatment system with waste heat utilization device |
CN201737980U (en) * | 2010-06-13 | 2011-02-09 | 浙江佰耐钢带有限公司 | Steel strip hot treatment system with residual-heat utilization device |
CN102268532B (en) * | 2011-07-28 | 2013-05-08 | 攀钢集团有限公司 | Method for realizing low-temperature heating process by using conventional walking beam type heating furnace |
CN206572555U (en) * | 2017-01-22 | 2017-10-20 | 重庆市旺利原农业发展有限公司 | Firewood energy-saving stove with residual neat recovering system |
CN107543421B (en) * | 2017-08-09 | 2019-12-03 | 中冶华天工程技术有限公司 | Produce the pusher-type furnace apparatus for vapour-cooling of superheated steam |
CN107976061A (en) * | 2017-12-28 | 2018-05-01 | 陕西能源职业技术学院 | A kind of vertical ceramic firing heating unit of continous way and heating means |
CN208167063U (en) * | 2017-12-30 | 2018-11-30 | 福建三宝钢铁有限公司 | A kind of pusher-type furnace is into steel platform |
-
2019
- 2019-06-03 CN CN201910478340.8A patent/CN110270597B/en active Active
-
2020
- 2020-06-03 US US16/891,106 patent/US20200377988A1/en not_active Abandoned
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106868290A (en) * | 2017-03-23 | 2017-06-20 | 东北大学 | Al alloy parts heat treatment experiment method |
Non-Patent Citations (1)
Title |
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English machine translation of CN 106868290 A of Li et al. (Year: 2017) * |
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CN110270597A (en) | 2019-09-24 |
CN110270597B (en) | 2021-06-15 |
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