CN104148381A - Symmetric rolling technology for T-shaped elevator guide rail steel - Google Patents
Symmetric rolling technology for T-shaped elevator guide rail steel Download PDFInfo
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- CN104148381A CN104148381A CN201410321680.7A CN201410321680A CN104148381A CN 104148381 A CN104148381 A CN 104148381A CN 201410321680 A CN201410321680 A CN 201410321680A CN 104148381 A CN104148381 A CN 104148381A
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Abstract
The invention discloses a symmetric rolling technology for T-shaped elevator guide rail steel. The technology comprises loading and heating, rough rolling of five rolling mills, universal continuous rolling of ten rolling mills, cooling bed cooling, straightening, rough cutting of a disc cold saw, clamp bundling, center subdivision, straightening, sizing sawing of a band saw as well as receiving and warehouse storage. According to the symmetric rolling technology for the T-shaped elevator guide rail steel, the universal rolling mills are used for rolling the elevator guide rail steel, and asymmetric rolling is changed into symmetric rolling by shape change during rolling, so that an original rolling hole type system which is more stable can be reasonably used, and simultaneously, the problems that a guide system is instable during rolling and cooling is uninform after rolling are solved. Compared with a conventional production technology, the rolling yield can be increased greatly, rolling quality and accuracy are stabilized, the rolling accident rate is reduced, and roll consumption is reduced.
Description
Technical field
The present invention relates to T-shaped cage guide steel symmetry rolling technique.
Background technology
T-shaped cage guide is the vitals of elevator rail system, and the automatic brake of elevator cab is that the safety tongs grip track by being arranged on bridge railway carriage or compartment realizes, and is the important component part of elevator safety system.The main mode of production of T-shaped cage guide steel wool base had two kinds in the past: a kind of is to adopt open-train mill rolling; Another kind is that semi-tandem rolling mode is produced.All there is the problems such as automaticity is lower, production efficiency is not high in these two kinds of modes of production, and workshop noise is larger, and labor strength is large.For this reason, the existing mode of production is to adopt the T-shaped guide rail steel wool of full tandem rolling mode rolling base with square billet, and this mode production efficiency is higher, and automaticity is also higher, and labour intensity and work situation before have very big improvement.But due to the inherent characteristics of deformed steel unsymmetrical rolling, guide system and to roll the even distortion of rear inhomogeneous cooling larger on the raising impact of operating rate of rolling mill, has restricted the performance of production line production capacity.
Summary of the invention
The technical problem to be solved in the present invention is: overcome the deficiency in prior art, a kind of T-shaped cage guide steel symmetry rolling technique is provided, rationally utilize original stable rolling groove system, the even problem of inhomogeneous cooling after the unstable and rolling of guide system while solving existing rolling.
The technical solution adopted for the present invention to solve the technical problems is: a kind of T-shaped cage guide steel symmetry rolling technique, comprise rolling flow process and subdivision flow process, and described rolling flow process has following steps:
1, the cold base of T-steel enters stove heating, by T-steel base length on request, hangs in stock shelf, through entering furnace roller road, sends in heat accumulating type step heating-furnace and heats;
2, surperficial dephosphorization is processed, and reaches the T-steel base of tapping temperature after heating, enters dephosphorization case carry out dephosphorize by high pressure water processing through furnace delivery table;
3, the T-steel base of dephosphorization being handled well adopts five rolling mill tandem rolling modes to carry out roughing, and milling train is arranged and is followed successively by: two roller horizontal mill-vertical mill-bis-roller horizontal mill-bis-roller horizontal mill-vertical mills;
4, to the T-steel base flying shear two ends crop after paired roughing;
5, adopt ten milling trains to carry out omnipotent tandem rolling to paired T-steel base, milling train is arranged and is followed successively by: two roller horizontal mill-universal mill-universal mill-universal mill-universal mill-edging mill-universal mill-universal mill-edging mill-universal mills, by Rolling With Universal Mill, finally form laterally zygomorphic paired T-steel;
6, the T-steel after omnipotent tandem rolling is pressed to the segmentation of length flying shear multiple length;
7, the good T-steel of segmentation is sent into tooth bar step cooling bed and carry out cooling processing;
8, after cooling rear paired T-steel is aligned by ten roller straighteners, enter marshalling stand and organize into groups;
9,, by the T-steel multiple length piling of having organized into groups, after clamping bundling, enter subdivision flow process;
Described subdivision flow process has following steps: 1) T-steel that clamps bundling is reached the standard grade; 2), with band saw rough lumber T-steel two ends end to end, guarantee T-steel two ends smooth end to end; 3) T-steel that clamps bundling is opened to bundle, along the longitudinal subdivision of symmetrical centre of paired T-steel; 4) T-steel after subdivision adopts roller or stretching mode to carry out straightening processing; 5) T-steel of having aligned, by length requirement, is used band saw to carry out scale sawing, completes the operation of rolling of cage guide steel, and after checking, warehouse-in is deposited.
The invention has the beneficial effects as follows: the present invention adopts Rolling With Universal Mill cage guide steel, the change of shape during by rolling, unsymmetrical rolling is become to symmetry rolling, can rationally utilize original more stable rolling groove system, while simultaneously also having solved rolling, guide system is unstable and roll the even problem of rear inhomogeneous cooling, and this technique is compared with traditional production technology, can significantly improve rolling output, stable rolling quality and precision, reduce rolling accident rate, reduces roll consumption.
The specific embodiment
A T-shaped cage guide steel symmetry rolling technique, comprises rolling flow process and subdivision flow process, and described rolling flow process has following steps:
1, the cold base of T-steel enters stove heating, by T-steel base length on request, hangs in stock shelf, through entering furnace roller road, sends in heat accumulating type step heating-furnace and heats;
2, surperficial dephosphorization is processed, and reaches the T-steel base of tapping temperature after heating, enters dephosphorization case carry out dephosphorize by high pressure water processing through furnace delivery table;
3, the T-steel base of dephosphorization being handled well adopts five rolling mill tandem rolling modes to carry out roughing;
4, to the T-steel base flying shear two ends crop after paired roughing;
5, adopt ten milling trains to carry out omnipotent tandem rolling to paired T-steel base, by Rolling With Universal Mill, finally form laterally zygomorphic paired T-steel;
6, the T-steel after omnipotent tandem rolling is pressed to the segmentation of length flying shear multiple length;
7, the good T-steel of segmentation is sent into tooth bar step cooling bed and carry out cooling processing;
8, after cooling rear paired T-steel is aligned by ten roller straighteners, enter marshalling stand and organize into groups;
9,, by the T-steel multiple length piling of having organized into groups, after clamping bundling, enter subdivision flow process;
Described subdivision flow process has following steps: 1) T-steel that clamps bundling is reached the standard grade; 2), with band saw rough lumber T-steel two ends end to end, guarantee T-steel two ends smooth end to end; 3) T-steel that clamps bundling is opened to bundle, along the longitudinal subdivision of symmetrical centre of paired T-steel; 4) T-steel after subdivision adopts roller or stretching mode to carry out straightening processing; 5) T-steel of having aligned, by length requirement, is used band saw to carry out scale sawing, completes the operation of rolling of cage guide steel, and after checking, warehouse-in is deposited.
The present invention adopts H shape steel rolling method pass schedule, by 15 milling trains, carries out full continuous rolling, and wherein during roughing, milling train is arranged and is followed successively by: two roller horizontal mill-vertical mill-bis-roller horizontal mill-bis-roller horizontal mill-vertical mills; During omnipotent tandem rolling, milling train is arranged and is followed successively by: two roller horizontal mill-universal mill-universal mill-universal mill-universal mill-edging mill-universal mill-universal mill-edging mill-universal mills, consider the subdivision requirement of subsequent process, rolling web place at Hou Santai universal mill, increased middle boss, make the less thick at subdivision place, center, the pass while being conducive to subdivision is processed, and postorder subdivision is more easily implemented.
When tooth bar step cooling bed carries out cooling processing, owing to being paired rolling, T-steel has formed up and down all symmetrical state, and while so just having avoided cooling on cold bed, because T-steel is asymmetric, bending phenomenon occurs, and is that more to grow bending more serious.And in original technique, owing to being single T-steel rolling, serious to head-bent when T-steel is cooling, make T-steel rolled piece not go out cold bed and the cold bed runout table that do not increase.
Adopt omnipotent method symmetry rolling technique, can substantially stop in former pass method rolling mill practice, due to rail head and waist longer, cause rolled piece grooving darker, and taper of groove is very little, so rolled piece is difficult for de-groove, the easy curling round the roll of rolled piece and answer back to guide and guard accident, improve operating efficiency, reduced spare parts consumption.
The omnipotent method of cage guide steel rolling process using, basically identical with H rolling process for steel section, even some operation is also easier than H rolling of sectional iron, therefore, as long as subdivision operation is handled properly, the paired universal rolling technique of cage guide steel, can make cage guide steel rolling produce qualitative leap occurs, it not only makes output be improved rapidly, make rolling quality and the precision of cage guide steel also be improved significantly simultaneously, and, with traditional production technology ratio, rolling accident rate, roll consumption reduces in a large number, so the omnipotent method production technology of this cage guide steel will the traditional pass method production technology of full substitution.
Above-described embodiment is only explanation technical conceive of the present invention and feature; its object is to allow person skilled in the art can understand content of the present invention and be implemented; can not limit the scope of the invention with this; all equivalences that Spirit Essence is done according to the present invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (1)
1. a T-shaped cage guide steel symmetry rolling technique, comprises rolling flow process and subdivision flow process, it is characterized in that: described rolling flow process has following steps:
1), the cold base of T-steel enters stove heating, by T-steel base length on request, hangs in stock shelf, through entering furnace roller road, send in heat accumulating type step heating-furnace and heat;
2), surperficial dephosphorization processes, and reaches the T-steel base of tapping temperature after heating, through furnace delivery table, enter dephosphorization case and carry out dephosphorize by high pressure water processing;
3), T-steel base that dephosphorization is handled well adopts five rolling mill tandem rolling modes to carry out roughing, milling train is arranged and is followed successively by: two roller horizontal mill-vertical mill-bis-roller horizontal mill-bis-roller horizontal mill-vertical mills;
4), to the T-steel base flying shear two ends crop after paired roughing;
5), adopt ten milling trains to carry out omnipotent tandem rolling to paired T-steel base, milling train is arranged and is followed successively by: two roller horizontal mill-universal mill-universal mill-universal mill-universal mill-edging mill-universal mill-universal mill-edging mill-universal mills, by Rolling With Universal Mill, finally form laterally zygomorphic paired T-steel;
6), the T-steel after omnipotent tandem rolling is pressed to the segmentation of length flying shear multiple length;
7), the good T-steel of segmentation is sent into tooth bar step cooling bed and carry out cooling processing;
8), cooling rear paired T-steel passes through, after ten roller straighteners alignings, to enter marshalling stand and organize into groups;
9), by the T-steel multiple length piling of having organized into groups, enter subdivision flow process after clamping bundling;
Described subdivision flow process has following steps: 1) T-steel that clamps bundling is reached the standard grade; 2), with band saw rough lumber T-steel two ends end to end, guarantee T-steel two ends smooth end to end; 3) T-steel that clamps bundling is opened to bundle, along the longitudinal subdivision of symmetrical centre of paired T-steel; 4) T-steel after subdivision adopts roller or stretching mode to carry out straightening processing; 5) T-steel of having aligned, by length requirement, is used band saw to carry out scale sawing, completes the operation of rolling of cage guide steel, and after checking, warehouse-in is deposited.
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| CN201410321680.7A CN104148381A (en) | 2014-07-07 | 2014-07-07 | Symmetric rolling technology for T-shaped elevator guide rail steel |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105290109A (en) * | 2015-12-06 | 2016-02-03 | 辽宁宏昌重工股份有限公司 | Roller assembly for slitting and rolling of elevator guide rail and rolling method |
| CN105583631A (en) * | 2016-02-29 | 2016-05-18 | 中冶华天工程技术有限公司 | Finishing device and method for producing elevator guide rails in pairs through online continuous dividing, continuous straightening and continuous sawing |
| CN107913908A (en) * | 2017-11-13 | 2018-04-17 | 天津鹏通金属结构制造有限公司 | A kind of high-strength light section steel grating processing technology |
| CN108916204A (en) * | 2018-06-19 | 2018-11-30 | 山东钢铁股份有限公司 | T-steel and its milling method |
| CN112944519A (en) * | 2021-03-15 | 2021-06-11 | 中信和业投资有限公司 | System for effectively controlling chimney effect of elevator shaft of super high-rise building |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105290109A (en) * | 2015-12-06 | 2016-02-03 | 辽宁宏昌重工股份有限公司 | Roller assembly for slitting and rolling of elevator guide rail and rolling method |
| CN105583631A (en) * | 2016-02-29 | 2016-05-18 | 中冶华天工程技术有限公司 | Finishing device and method for producing elevator guide rails in pairs through online continuous dividing, continuous straightening and continuous sawing |
| CN107913908A (en) * | 2017-11-13 | 2018-04-17 | 天津鹏通金属结构制造有限公司 | A kind of high-strength light section steel grating processing technology |
| CN108916204A (en) * | 2018-06-19 | 2018-11-30 | 山东钢铁股份有限公司 | T-steel and its milling method |
| CN112944519A (en) * | 2021-03-15 | 2021-06-11 | 中信和业投资有限公司 | System for effectively controlling chimney effect of elevator shaft of super high-rise building |
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Application publication date: 20141119 |