CN110696548A - Rim section steel and rolling method - Google Patents
Rim section steel and rolling method Download PDFInfo
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- CN110696548A CN110696548A CN201911016530.4A CN201911016530A CN110696548A CN 110696548 A CN110696548 A CN 110696548A CN 201911016530 A CN201911016530 A CN 201911016530A CN 110696548 A CN110696548 A CN 110696548A
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- Prior art keywords
- rim
- rolling
- section steel
- descaling
- hole
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B21/00—Rims
- B60B21/02—Rims characterised by transverse section
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/08—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 structural sections, i.e. work of special cross-section, e.g. angle steel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
-
- 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
- B21B37/46—Roll speed or drive motor control
-
- 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
- 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
- B21B37/76—Cooling control on the run-out table
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Metal Rolling (AREA)
Abstract
The invention discloses rim section steel, which comprises hot rolled section steel for a dumper rim, wherein the model of the rim is 11.25/2.0-25, and the rim is made of 400 LW; a rolling method of rim section steel comprises the following steps: the 165 x 280 rectangular billet is used, and the rolling process flow is as follows: heating → primary descaling → cogging and roughing → secondary descaling → finish rolling → cooling → straightening → inspection and packaging → warehousing; the invention has scientific and reasonable structure and safe and convenient use, and the use of the steel for producing the rim avoids the cutting and the hot pressing forming of a steel plate, simplifies the production process and reduces the production cost; the integral forming avoids the welding defect possibly generated by splicing two sectional materials and effectively prevents cracks; according to the stress condition, the thickness of the leg part, namely the arc at the joint part, is increased, the integral strength of the rim is enhanced, and the service life of the steel ring is prolonged.
Description
Technical Field
The invention belongs to the technical field of rim steel, and particularly relates to rim steel and a rolling method.
Background
When the wheel rim used on the existing wide heavy-load mine dump truck is used for producing and processing the rim, because the rim section steel with the specification and the shape can not be used for directly manufacturing the rim, a rim manufacturer welds two steel plates with different specifications together after cutting, rolling, pressing and forming so as to meet the size requirement of 11.25/2.0-25 rim section steel, and the rim produced by the method has the following defects: because the used rim steel is not integrally rolled and formed and needs to be cut and welded, the surface is uneven and welding defects are easy to generate; because the stress of the wheel rim on the whole section is different, the stress of the head and the leg is the largest, the stress of the middle waist is small, the thickness of the head and the leg is correspondingly increased according to the stress condition so as to increase the strength of the head and the leg to meet the use requirement, and because the wheel rim is formed by pressing a steel plate, the thickness of each part is the same, the wheel rim is not an ideal section shape, the problems of cracking, even breaking and the like are easy to occur in the use process, the product quality is seriously restricted, and the personal safety is harmed.
Disclosure of Invention
The present invention is directed to a rim section steel and a rolling method to solve the problems of the background art.
In order to achieve the purpose, the invention provides the following technical scheme: the rim section steel comprises hot rolled section steel for a dumper rim, the model of the rim is 11.25/2.0-25, the material of the rim is 400LW, and the cross section size of the rim is as follows:
first, head major dimension: the width a is 16 +/-1 mm, and the height b is 25 +/-0.5 mm; the locking groove angle beta is 20-25 degrees;
II, waist width size: width ofThe waist and the legs are connected at an inclination angle of 5 degrees, and the thickness c is 12-14 mm;
thirdly, the main size of the leg part: the length d is 38 +/-1 mm, the thickness e is 13-15 mm, and the height h is 51 +/-1.5 mm.
A rolling method of rim section steel comprises the following steps: the 165 x 280 rectangular billet is used, and the rolling process flow is as follows: heating → primary descaling → cogging and roughing → secondary descaling → finish rolling → cooling → straightening → inspection and packaging → warehousing.
Preferably, the heating is performed by a push type heating furnace, the temperature of a soaking section of the push type heating furnace is controlled to be 1200-1230 ℃, no obvious furnace bottom tube black mark exists on the surface of the billet, and the time of the soaking section is ensured to be more than or equal to 50 minutes.
Preferably, the primary descaling and the secondary descaling adopt high-pressure water spraying for descaling, the water spraying pressure is 160-200 Mpa, and the billet steel running speed is 1.5-2M/S.
Preferably, the design of the pass system in the rough cogging mill follows the following principle: forced widening is adopted in the rough rolling extension hole to meet the requirement of the cutting deep hole on the width of the blank; distributing the rolling reduction and the uneven deformation on a first rolling mill and a second rolling mill as much as possible; a large bending hole type system is adopted from a deep cutting hole to a finished product hole to ensure that each hole can be smoothly bitten into and taken off from the groove, so that the head material type is well filled, and small grooves are well machined.
Compared with the prior art, the invention has the beneficial effects that: the invention has scientific and reasonable structure and safe and convenient use, and the use of the steel for producing the rim avoids the cutting and the hot pressing forming of a steel plate, simplifies the production process and reduces the production cost; the integral forming avoids the welding defect possibly generated by splicing two sectional materials and effectively prevents cracks; according to the stress condition, the thickness of the leg part, namely the arc at the joint part, is increased, the integral strength of the rim is enhanced, and the service life of the steel ring is prolonged.
Drawings
FIG. 1 is a cross-sectional dimension view of a wheel rim of the present invention;
FIG. 2 is a cross-sectional view of the steel of the original spliced rim;
FIG. 3 is a cross-sectional view of the integrally formed rim steel;
FIG. 4 is a schematic diagram of five-pass hole patterns of rough rolling according to the present invention;
FIG. 5 is a diagram of a hole pattern of a finish rolling of the present invention in five passes;
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a rim steel and rolling method, comprising: the rim section steel comprises hot rolled section steel for a dumper rim, the model of the rim is 11.25/2.0-25, the material of the rim is 400LW, and the cross section size of the rim is as follows:
first, head major dimension: the width a is 16 +/-1 mm, and the height b is 25 +/-0.5 mm; the locking groove angle beta is 20-25 degrees;
II, waist width size: width of
The waist and the legs are connected at an inclination angle of 5 degrees, and the thickness c is 12-14 mm;
thirdly, the main size of the leg part: the length d is 38 +/-1 mm, the thickness e is 13-15 mm, and the height h is 51 +/-1.5 mm.
In this embodiment, preferably, a rim section rolling method: the 165 x 280 rectangular billet is used, and the rolling process flow is as follows: heating → primary descaling → cogging and roughing → secondary descaling → finish rolling → cooling → straightening → inspection and packaging → warehousing.
In this embodiment, preferably, the heating is performed by a pusher furnace, so as to ensure that the temperature of the soaking section of the pusher furnace is controlled at 1200 ℃ and 1230 ℃, no obvious black mark is formed on the surface of the billet, and the time of the soaking section is ensured to be more than or equal to 50 minutes.
In the embodiment, preferably, the primary descaling and the secondary descaling are performed by high-pressure water spraying, the water spraying pressure is 160-200 Mpa, and the billet running speed is 1.5-2M/S.
In this embodiment, it is preferable that the design of the pass system in the cogging and roughing step follows the following principle: forced widening is adopted in the rough rolling extension hole to meet the requirement of the cutting deep hole on the width of the blank; distributing the rolling reduction and the uneven deformation on a first rolling mill and a second rolling mill as much as possible; a large bending hole type system is adopted from a deep cutting hole to a finished product hole to ensure that each hole can be smoothly bitten into and taken off from the groove, so that the head material type is well filled, and small grooves are well machined.
In the embodiment, preferably, the rough rolling is divided into five passes, the rolling speed is 2.5-3M/S, and the reduction and the guide are finely adjusted according to the process requirements in production; the pass 1 rolling reduction is 30; an elongation of 1.144; the reduction of pass 2 is 29; elongation of 1.290; the pass 3 rolling reduction is 30; elongation of 1.363; the pass 4 rolling reduction is 15; elongation of 1.452; the rolling reduction of pass 5 is 7; the elongation was 1.557.
In the embodiment, preferably, the finish rolling is divided into five passes, the finish rolling is performed for 1-2 passes, the rolling speed is 2.5-3.0M/S, and the rolling reduction and the guide are adjusted according to the process requirements in the rolling process; the reduction of the finish rolling pass 1 is 5; the elongation is 1.203; the reduction of pass 2 is 3.6; the elongation is 1.181; the rolling speed of finish rolling for 3-5 times is 3.5-4.5M/S, and the rolling reduction and the guide are adjusted according to the process requirements in the rolling process; the reduction of the finish rolling pass 3 is 2.8; the elongation is 1.139; the pass 4 reduction is 1.7; elongation of 1.122; the rolling reduction of pass 5 is 0.8; the elongation was 1.068.
In this embodiment, the cooling process is preferably carried out by transferring to a cooling bed for cooling.
In the embodiment, preferably, the straightening process adopts a straightening machine for straightening, and the requirements of the cross section curvature being less than or equal to 1mm, the plane curvature per meter being less than or equal to 5mm and the side surface curvature being less than or equal to 3mm are met.
In the embodiment, preferably, the surface of the section steel cannot have defects such as cracks, scars, scaling, hairlines, folds, inclusions and the like in the inspection process.
The invention adopts 165 x 280 widened rectangular billet as raw material, provides favorable conditions for subsequent forming and widening, adopts large waist-bending hole pattern, ensures stable rolling and fully ensures the shape and size of the head.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The rim section steel comprises hot rolled section steel for a dumper rim, wherein the type of the rim is 11.25/2.0-25, and the steel is characterized in that: the rim material is 400LW, the rim cross section size:
first, head major dimension: the width a is 16 +/-1 mm, and the height b is 25 +/-0.5 mm; the locking groove angle beta is 20-25 degrees;
II, waist width size: width of
The waist and the legs are connected at an inclination angle of 5 degrees, and the thickness c is 12-14 mm;
thirdly, the main size of the leg part: the length d is 38 +/-1 mm, the thickness e is 13-15 mm, and the height h is 51 +/-1.5 mm.
2. A rolling method of rim section steel comprises the following steps: the 165 x 280 rectangular billet is used, and the rolling process flow is as follows: heating → primary descaling → cogging and roughing → secondary descaling → finish rolling → cooling → straightening → inspection and packaging → warehousing.
3. A method of rolling a rim section steel according to claim 2, wherein: the heating adopts a push type heating furnace, the temperature of a soaking section of the push type heating furnace is controlled to be 1200-1230 ℃, no obvious furnace bottom tube black mark exists on the surface of the billet, and the time of the soaking section is ensured to be more than or equal to 50 minutes.
4. A method of rolling a rim section steel according to claim 2, wherein: and the primary descaling and the secondary descaling adopt high-pressure water spraying for descaling, the water spraying pressure is 160-200 Mpa, and the billet steel running speed is 1.5-2M/S.
5. A method of rolling a rim section steel according to claim 2, wherein: the design of the pass system in the cogging and roughing follows the following principle: forced widening is adopted in the rough rolling extension hole to meet the requirement of the cutting deep hole on the width of the blank; distributing the rolling reduction and the uneven deformation on a first rolling mill and a second rolling mill as much as possible; a large bending hole type system is adopted from a deep cutting hole to a finished product hole to ensure that each hole can be smoothly bitten into and taken off from the groove, so that the head material type is well filled, and small grooves are well machined.
6. A method of rolling a rim section steel according to claim 2, wherein: the straightening process adopts a straightening machine for straightening, and the requirements that the bending degree of a cross section is less than or equal to 1mm, the bending degree of a plane per meter is less than or equal to 5mm, and the bending degree of a side surface is less than or equal to 3mm are met.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911016530.4A CN110696548A (en) | 2019-10-24 | 2019-10-24 | Rim section steel and rolling method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911016530.4A CN110696548A (en) | 2019-10-24 | 2019-10-24 | Rim section steel and rolling method |
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| Publication Number | Publication Date |
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| CN110696548A true CN110696548A (en) | 2020-01-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911016530.4A Pending CN110696548A (en) | 2019-10-24 | 2019-10-24 | Rim section steel and rolling method |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4721142A (en) * | 1986-04-21 | 1988-01-26 | Dresser Industries, Inc. | Rim & lock ring |
| CN1640694A (en) * | 2004-01-09 | 2005-07-20 | 赖建辉 | Light vehicle rim section steel |
| CN2801524Y (en) * | 2005-06-24 | 2006-08-02 | 赖建辉 | Wheel rim formed steel |
| CN2811034Y (en) * | 2005-06-28 | 2006-08-30 | 赖建辉 | Retrofitted rim profiled steel for wheel |
| CN201385548Y (en) * | 2009-02-23 | 2010-01-20 | 北汽福田汽车股份有限公司诸城汽车厂 | Engineering-truck rim shaped steel |
| CN103600621A (en) * | 2013-10-30 | 2014-02-26 | 山东云洲车轮有限公司 | Engineering truck wheel |
| CN107008748A (en) * | 2017-04-24 | 2017-08-04 | 临沂市兴东异型钢有限公司 | A kind of rim shaped steel and preparation method thereof |
| CN107058706A (en) * | 2017-04-24 | 2017-08-18 | 临沂市兴东异型钢有限公司 | A kind of new widened rim shaped steel and preparation method thereof |
| CN206614996U (en) * | 2017-04-17 | 2017-11-07 | 安阳市安强车轮有限公司 | A kind of one-piece type Wheel rim formed steel |
| CN109774374A (en) * | 2019-01-24 | 2019-05-21 | 东营贝特尔机械科技有限公司 | A kind of wheel rim and its forming technology of two-piece wheel |
-
2019
- 2019-10-24 CN CN201911016530.4A patent/CN110696548A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4721142A (en) * | 1986-04-21 | 1988-01-26 | Dresser Industries, Inc. | Rim & lock ring |
| CN1640694A (en) * | 2004-01-09 | 2005-07-20 | 赖建辉 | Light vehicle rim section steel |
| CN2801524Y (en) * | 2005-06-24 | 2006-08-02 | 赖建辉 | Wheel rim formed steel |
| CN2811034Y (en) * | 2005-06-28 | 2006-08-30 | 赖建辉 | Retrofitted rim profiled steel for wheel |
| CN201385548Y (en) * | 2009-02-23 | 2010-01-20 | 北汽福田汽车股份有限公司诸城汽车厂 | Engineering-truck rim shaped steel |
| CN103600621A (en) * | 2013-10-30 | 2014-02-26 | 山东云洲车轮有限公司 | Engineering truck wheel |
| CN206614996U (en) * | 2017-04-17 | 2017-11-07 | 安阳市安强车轮有限公司 | A kind of one-piece type Wheel rim formed steel |
| CN107008748A (en) * | 2017-04-24 | 2017-08-04 | 临沂市兴东异型钢有限公司 | A kind of rim shaped steel and preparation method thereof |
| CN107058706A (en) * | 2017-04-24 | 2017-08-18 | 临沂市兴东异型钢有限公司 | A kind of new widened rim shaped steel and preparation method thereof |
| CN109774374A (en) * | 2019-01-24 | 2019-05-21 | 东营贝特尔机械科技有限公司 | A kind of wheel rim and its forming technology of two-piece wheel |
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