CN101520405B - Experimental device and experimental method for cold formed sectional steel surface defects generated in roll forming - Google Patents
Experimental device and experimental method for cold formed sectional steel surface defects generated in roll forming Download PDFInfo
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- CN101520405B CN101520405B CN2009100448680A CN200910044868A CN101520405B CN 101520405 B CN101520405 B CN 101520405B CN 2009100448680 A CN2009100448680 A CN 2009100448680A CN 200910044868 A CN200910044868 A CN 200910044868A CN 101520405 B CN101520405 B CN 101520405B
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Abstract
The invention discloses an experimental device and an experimental method for cold formed sectional steel surface defects generated in roll forming. The experimental device comprises two passes of machine frames. Each pass of machine frame comprises a housing of which left and right upright posts are provided with step grooves, supporting rolls of which two ends are arranged on the housing, forming rolls arranged on the supporting rolls, and a pressing down device arranged above the housing. The experiment is used for carrying out simulation experiment by changing different forming rolls for the first set machine frame. The device and the method have the advantages of reproducing the generation of cold formed sectional steel surface defects in the roll forming process and improving the accuracy of technological design and actual production efficiency by researching the law of the influence of the forming rolls on the cold formed sectional steel surface defects due to various factors. In addition, the device is compact in structure, simple in operation, convenient in manufacturing and installation, and time and labor-saving.
Description
Technical field
The present invention relates to the roll forming technical field, relate in particular to a kind of cold formed sectional steel surface defects generated in roll forming experimental provision and experimental technique, so that the forming process of cold-rolled forming section surface imperfection in the simulation roll forming actual forming process, provide the important techniques support to the appraisement system that influences rule and set up the scientific evaluation surface imperfection of panel surface for studying forming rolls.
Background technology
In multi-pass roll forming process, during particularly the high strength plate is shaped, when plate is in sliding mode, because plate contacts with pressure between the mold work surface, adhesive wear may take place, and at this moment the cold-rolled forming section surface can have a bad scrape, and promptly galled spots appears in cold-rolled forming section.In actual production process,, can improve cold-rolled forming section surface quality and product qualified rate by reducing the generation of this surface imperfection.So the measure that research galled spots and prevention galled spots produce is extremely important to cold-rolled forming section manufacturer and plate supply commercial city.In multi-pass roll forming process, it is relevant with several factors surface imperfection to occur: the material of material (composition and tissue), mechanical property (work hardening and hardness), surface topography (roughness), the material of forming rolls (composition and tissue), mechanical property (hardness), surface topography (roughness and texture) and geomery (forming rolls angle and radius), also have the external process condition as lubricated (composition and consumption), temperature, foreign matter etc., also have molding condition such as deformation pattern and deflection, forming rolls drafts, forming speed, contact area etc.As seen, the factor that influences the roll forming surface defects of products is numerous and complicated, form reason in order in depth to understand cold formed sectional steel surface defects generated in roll forming, find out the influence rule of each factor to the steel surface imperfection, each factor of forming rolls particularly, be forming rolls material, forming rolls skin hardness and surfaceness respectively for the rule that influences of surface imperfection, must set up the system of scientific evaluation cold formed sectional steel surface defects generated in roll forming, provide guide service for production better.For this reason, need a kind of suitable cold-rolled forming section surface imperfection experimental simulation device of design, so that can in the laboratory, reproduce the forming process of surface imperfection in the actual forming process of roll forming truly.
Retrieval through to patent documentation still finds no similar analogue experiment installation.In non-patent technology, through retrieval as can be known, people such as Australian D.M.Fabi janic are at periodical " Metal Forming " (paper " Improving the gallingresistance of automotive stamping tolls " " improving the wear resistance of automobile diel " that " metal forming " delivered on 2000 the 9th phases).This article has been pointed out and has been adopted the flexural deformation of U-shaped spare to study the wear resistance of Automobile Plate diel, but tangible limitation is arranged.The Sheet Metal Forming Technology and the multi-pass roll forming technology that mainly are automobile differ bigger, and both modes of texturing have bigger difference.Simultaneously, die wear and plate scratch the straight portion that only occurs in bending forming in the bending of U-shaped spare, and for the changeable cold-rolled forming section of cross sectional shape, its shaping mode is stretcher strain and diastrophic coupling, so can not adopt the experimental technique of punching press to study the forming process of cold formed sectional steel surface defects generated in roll forming.
Summary of the invention
According to background technology, the object of the present invention is to provide a kind of cold formed sectional steel surface defects generated in roll forming experimental provision.
Another purpose of the present invention is to use this cold formed sectional steel surface defects generated in roll forming experimental provision to measure the experimental technique of differing formed roller state to the situation that influences on cold-rolled forming section surface.
By reproducing the forming process of the surface imperfection of cold-rolled forming section in the roll forming process, for the research forming rolls provides the corresponding techniques support to panel surface defect influence rule and the system of setting up scientific evaluation cold-rolled forming section surface imperfection.
To achieve these goals, technical scheme of the present invention is as follows:
A kind of cold formed sectional steel surface defects generated in roll forming experimental provision is characterized in that, it comprises two passage forming machine framves, and the shaping frame of any described passage includes:
Memorial archway has step trough on the left and right column of described memorial archway;
Two ends are arranged on the interior backing roll of step trough of described memorial archway, described backing roll is connected with electric-motor drive, described backing roll comprises top backing up roll and lower support roller, and an end of described top backing up roll and lower support roller is respectively arranged with first axial adjusting device and second axial adjusting device;
Forming rolls, in order to control the profile of continuous plate, described forming rolls comprises topping roll that is supported by described top backing up roll and the bottom roll that is supported by described lower support roller;
Be arranged on the screwdown gear of described top backing up roll top, be used for controlling the drafts of topping roll.
Further, in the present invention, described first axial adjusting device and second axial adjusting device include worm gear and worm screw.
Further, in the present invention, described screwdown gear comprises worm gear, worm screw and depress roller, and the bottom of described depress roller is connected with an end of top backing up roll, and depress roller is connected with worm screw by shaft coupling.
Further, in the present invention, be provided with the cushion block that is connected with described second axial adjusting device in the step trough of described memorial archway and depress safety pad.
A kind of cold formed sectional steel surface defects generated in roll forming experimental technique is characterized in that it may further comprise the steps:
1). according to producing needs, choose the shaping blank;
2). according to producing needs, determine the angle of forming rolls on the two passage frames earlier;
3). change angle forming rolls identical, that other states are different successively and carry out simulated experiment on the first passage shaping frame, described other states mainly are meant parameters such as forming rolls material, forming rolls skin hardness, forming rolls surfaceness and texture;
4). be recorded under the different forming rolls states formation situation of cold-rolled forming section surface imperfection.
Beneficial effect of the present invention is: the present invention can be in without the reproduction roll forming process under the actual production conditions generation of cold-rolled forming section surface imperfection, by the influence rule of each factor of research forming rolls, thereby improve the accuracy and the actual production efficient of technological design to the cold-rolled forming section surface imperfection.In addition, compact conformation of the present invention, simple to operate, manufacturing and easy for installation, time saving and energy saving.
Description of drawings
Describe the present invention in detail below in conjunction with the drawings and specific embodiments:
Fig. 1 is a structural representation of the present invention.
The synoptic diagram that Fig. 2 is out of shape in experiment for the shaping plate.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
Referring to Fig. 1,2, a kind of cold formed sectional steel surface defects generated in roll forming experimental provision, it comprises two passage forming machine framves 100, and every time shaping frame 100 includes memorial archway 1, and the left and right column of memorial archway 1 has step trough 19 on (2,14).
Forming rolls comprises topping roll 10 and bottom roll 13.Bottom roll 13 is installed on the lower support roller 4, the two ends of lower support roller 4 are placed in the step trough 19 of memorial archway 1, the right-hand member of lower support roller 4 is connected with electric-motor drive, the left end of lower support roller 4 is connected with worm gear 20 in second axial adjusting device 3 by shaft coupling, second axial adjusting device 3 by cushion block 17 with depress safety pad 22 and be connected with memorial archway 1.Second axial adjusting device 3 also comprises worm screw 21 and holds the axial adjustment worm gear case 16 of worm gear 20 and worm screw 21, axially adjusts worm gear case 16 by on the left column 2 that is bolted to memorial archway 1.The surperficial angle of bottom roll 4 is determined according to technological requirement.
Also be provided with screwdown gear 9 on the right-hand member of upper support roller 6.Screwdown gear 9 comprises worm gear, worm screw and depress roller, and the bottom of depress roller is connected by the right-hand member of plate with top backing up roll 6, and depress roller is connected with worm screw by shaft coupling, and worm gear is connected with drive of motor, and screwdown gear 9 is the drafts that are used for controlling topping roll 10.
The left and right column of memorial archway 1 all has end cap 7 on (2,14), and connecting rod 8 is arranged between the two end cap 7, and end cap 7 is fixed together by bearing pin 18 and column.
The difference of every time shaping frame 100 is: the angle difference of forming rolls.
In the process of using cold formed sectional steel surface defects generated in roll forming experimental provision of the present invention, plate contacts with the forming rolls surface line, the forming rolls surface forms sticky lump, sticky lump can scratch panel surface in the roll forming process, thereby produce the cold-rolled forming section surface imperfection, increase along with curring time, sticky lump can get more and more, increasing, the abrasive degree of material surface also can be more and more serious, thereby reach the purpose of reproducing the roll forming surface imperfection, for the research forming rolls provides the corresponding techniques support to panel surface defect influence rule and the system of setting up scientific evaluation cold-rolled forming section surface imperfection.
A kind of cold formed sectional steel surface defects generated in roll forming experimental technique of using above-mentioned experimental provision:
Step 1:, choose U type opening plate as the shaping blank according to producing needs.
Step 2: for the ease of analyzing experimental result, determine that the first passage forming rolls factor influences rule to surface imperfection, earlier at the U type opening sheet forming operating mode of being studied, determine the forming rolls state of required research: comprise that mainly (the forming rolls material that is adopted is current manufacturer 45 Fine Steel Casting irons commonly used to parameters such as forming rolls material, forming rolls skin hardness, forming rolls surfaceness and texture, the forming rolls skin hardness is that HRC50-70 does not wait, and the forming rolls surfaceness is between the 0.2-2.0 μ m).
Step 3: according to producing needs, determine the angle of forming rolls on the two passage frames, shape roller after, it is assemblied on the experimental provision.
Step 4: determine other molding conditions: experiment is at room temperature carried out, and adopts common shaping lubricant, forming speed: be generally 10m/min.
Step 5: the shaping blank is introduced the cold formed sectional steel surface defects generated in roll forming experimental provision, forms the axial adjustment of roller by axial adjusting device, axially adjust accurate after, depress adjustment again.Be to guarantee the reasonable distortion of shaping blank, depress gap (being optimized and revised to obtain the gap that compresses of the best according to the resulting data of experimental result more later on) in the time of tentatively determining forming rolls shaping in two passages according to technological parameter and practical experience.
Step 6:, on the first passage shaping frame, change angle forming rolls identical, that other states are different successively and carry out simulated experiment according to a plurality of factors that influence the cold-rolled forming section surface imperfection (forming rolls material, forming rolls skin hardness, forming rolls surfaceness and texture) and level value.
Step 7: be recorded under the different forming rolls states formation situation of cold-rolled forming section surface imperfection.Provide foundation for systematically studying each factor of forming rolls to panel surface defective effect rule; After surface imperfection occurring, can carry out Study on Evaluation targetedly, the evaluation method of a cover science is provided for the production scene.
The present invention can be in without the reproduction roll forming process under the actual production conditions generation of cold-rolled forming section surface imperfection, by the influence rule of each factor of research forming rolls, thereby improve the accuracy and the actual production efficient of technological design to the cold-rolled forming section surface imperfection.
Utilize cold formed sectional steel surface defects generated in roll forming experimental provision of the present invention not only can obtain the surface imperfection of plate straight portion, also can obtain the cold-rolled forming section surface imperfection with the more approaching bent angle position of actual process, for each factor of forming rolls in the research roll forming process provides the corresponding techniques support to the rule that influences of cold-rolled forming section surface imperfection.
In addition, structurally, the present invention's formula structure that each several part can be designed to insert.Can be convenient to like this change, satisfy under the different angles forming rolls state forming rolls well the needs of the influence degree of shaped steel surface imperfection.
More than show and described ultimate principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in the foregoing description and the instructions is principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in the claimed scope of the present invention.The protection domain that the present invention requires is defined by appending claims and equivalent thereof.
Claims (5)
1. a cold formed sectional steel surface defects generated in roll forming experimental provision is characterized in that, it comprises two passage forming machine framves, and the shaping frame of any described passage includes:
Memorial archway has step trough on the left and right column of described memorial archway;
Two ends are arranged on the interior backing roll of step trough of described memorial archway, described backing roll is connected with electric-motor drive, described backing roll comprises top backing up roll and lower support roller, and an end of described top backing up roll and lower support roller is respectively arranged with first axial adjusting device and second axial adjusting device;
Forming rolls, in order to control the profile of continuous plate, described forming rolls comprises topping roll that is supported by described top backing up roll and the bottom roll that is supported by described lower support roller;
Be arranged on the screwdown gear of described top backing up roll top.
2. cold formed sectional steel surface defects generated in roll forming experimental provision according to claim 1 is characterized in that, described first axial adjusting device and second axial adjusting device include worm gear and worm screw.
3. cold formed sectional steel surface defects generated in roll forming experimental provision according to claim 1, it is characterized in that, described screwdown gear comprises worm gear, worm screw and depress roller, and the bottom of described depress roller is connected with the other end of top backing up roll, and depress roller is connected with worm screw by shaft coupling.
4. cold formed sectional steel surface defects generated in roll forming experimental provision according to claim 1 is characterized in that, is provided with the cushion block that is connected with described second axial adjusting device in the step trough of described memorial archway and depresses safety pad.
5. one kind is used the experimental provision described in the claim 1 to measure the experimental technique of differing formed roller state to the situation that influences on cold-rolled forming section surface, it is characterized in that it may further comprise the steps:
1). according to producing needs, choose the shaping blank; According to producing needs, choose U type opening plate as the shaping blank; For the ease of analyzing experimental result, determine that the first passage forming rolls factor influences rule to surface imperfection, earlier at the U type opening sheet forming operating mode of being studied, determine the forming rolls state of required research;
2). according to producing needs, determine the angle of forming rolls on the two passage frames earlier; After shaping roller, it is assemblied on the described experimental provision;
3). change angle forming rolls identical, that other states are different successively and carry out simulated experiment on the first passage shaping frame, described other states mainly are meant forming rolls material, forming rolls skin hardness, forming rolls surfaceness and parametric texture;
4). be recorded under the different forming rolls states formation situation of cold-rolled forming section surface imperfection.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100448680A CN101520405B (en) | 2009-01-05 | 2009-01-05 | Experimental device and experimental method for cold formed sectional steel surface defects generated in roll forming |
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| CN2009100448680A CN101520405B (en) | 2009-01-05 | 2009-01-05 | Experimental device and experimental method for cold formed sectional steel surface defects generated in roll forming |
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| CN101520405B true CN101520405B (en) | 2011-03-09 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102353758B (en) * | 2011-07-04 | 2014-02-19 | 西部钛业有限责任公司 | Rolling deformation analysis method of thick-wall metal tube |
| CN116071363B (en) * | 2023-03-27 | 2023-06-16 | 山东中济鲁源机械有限公司 | Automatic change shaped steel intelligent production monitoring system |
Citations (4)
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|---|---|---|---|---|
| US6119345A (en) * | 1996-09-11 | 2000-09-19 | Johnstown America Corporation | Method of cold forming center sill for a railcar |
| CN2511409Y (en) * | 2001-10-31 | 2002-09-18 | 鞍山东方彩板有限公司 | Cold bending apparatus for construction bearing plate of building |
| CN2907946Y (en) * | 2006-05-08 | 2007-06-06 | 潍坊潍柴零部件机械有限公司 | Multi-roll cold bending shaping machine |
| CN201143515Y (en) * | 2007-11-29 | 2008-11-05 | 武汉钢铁(集团)公司 | Novel lightweight steel shape contoured roll |
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2009
- 2009-01-05 CN CN2009100448680A patent/CN101520405B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6119345A (en) * | 1996-09-11 | 2000-09-19 | Johnstown America Corporation | Method of cold forming center sill for a railcar |
| CN2511409Y (en) * | 2001-10-31 | 2002-09-18 | 鞍山东方彩板有限公司 | Cold bending apparatus for construction bearing plate of building |
| CN2907946Y (en) * | 2006-05-08 | 2007-06-06 | 潍坊潍柴零部件机械有限公司 | Multi-roll cold bending shaping machine |
| CN201143515Y (en) * | 2007-11-29 | 2008-11-05 | 武汉钢铁(集团)公司 | Novel lightweight steel shape contoured roll |
Non-Patent Citations (6)
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| 倪正银等.冷弯成型局部大变形测试装置的设计与研究.《山东交通学院学报》.2006,第14卷(第2期),56-59. * |
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Owner name: SHANGHAI BAOSTEEL PROFILE STEEL CO., LTD. Effective date: 20110826 |
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Effective date of registration: 20110826 Address after: 200050 No. 1118 Dingxi Road, Shanghai, Changning District Co-patentee after: Shanghai Baosteel Section Steel Co., Ltd. Patentee after: Shanghai Baosteel Construction Design and Research Institute Address before: 200050 No. 1118 Dingxi Road, Shanghai, Changning District Patentee before: Shanghai Baosteel Construction Design and Research Institute |