CN102978556B - Surface hot-dip galvanizing process of track beam cast steel support - Google Patents
Surface hot-dip galvanizing process of track beam cast steel support Download PDFInfo
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- CN102978556B CN102978556B CN201210593337.9A CN201210593337A CN102978556B CN 102978556 B CN102978556 B CN 102978556B CN 201210593337 A CN201210593337 A CN 201210593337A CN 102978556 B CN102978556 B CN 102978556B
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- track girder
- steel supporter
- steel support
- girder cast
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Abstract
In order to solve problems that residual oil stains in a cast steel support cannot be effectively eliminated, the hot-dip galvanizing quality of the surface of a workpiece cannot be guaranteed, the corrosion resistance of the cast steel support is obviously reduced, and the safety in light rail operation is affected in a surface hot-dip galvanizing treatment process of the track beam cast steel support in the prior art, the invention discloses a surface hot-dip galvanizing process of the track beam cast steel support. The process comprises the following main steps: (S1) checking the track beam cast steel support to be treated; (S2) preparing equipment; (S3) preparing a workpiece; (S4) deoiling the track beam cast steel support; (S5) checking the track beam cast steel support; and (S6) carrying out hot-dip galvanizing on the track beam cast steel support. The surface hot-dip galvanizing process has the advantages that the oil stains in the track beam cast steel support can be completely eliminated, the adhesion force of a zinc coating on the surface of the track beam cast steel support is enhanced, the corrosion resistance of the track beam cast steel support is improved and the safety in the light rail operation is guaranteed.
Description
Technical field
The present invention relates to a kind of track girder cast steel supporter process for treating surface, be related specifically to a kind of track girder cast steel supporter surface hot-dip galvanizing technique.
Background technology
Light rail track beam cast steel supporter is put, the bottom (hereinafter referred to as track girder cast steel supporter) is mounted in main steel and iron member on track girder support pier, supports, regulates and bear the operation of light rail train on track girder.Because this steel casting installation environment is located in field, expose to the sun and rain all the year round, and bear topsoil and acid mist Eroded, thus very high to the requirement for anticorrosion on cast steel supporter surface.Prior art cast steel supporter have employed the process of surface treatment of galvanizing of sacrificial anode, galvanic protection, to improve its surface anticorrosion ability.Described hot-dip galvanizing technique refers in zinc solution workpiece being immersed 450-480 DEG C of high temperature fused state, fused zinc is infiltrated and covers workpiece surface, form protective layer.But this technique is very high to the processing requirements that deoils before galvanizing, before immersion plating, workpiece surface should without some greasy dirts.The material adopted due to track girder cast steel supporter is steel casting, and the internal structure of cast steel is comparatively loose, has a large amount of machine oil or lubricating oil to immerse inside workpiece during mechanical workout.Conventional solvent oil removing, can only remove the greasy dirt on surface; Groove temperature is the alkali lye of heating of 80-90 DEG C, also can only remove the greasy dirt on the shallow top layer of inside workpiece; And when workpiece immerses in the zinc solution of 450-480 DEG C of high temperature fused state; the time compole putting into Zinc Pot for Galvanizing by Dipping due to workpiece is short; the machine oil of inside workpiece does not force out burning to eliminate by high temperature galvanizing solution; and when the greasy dirt of inside workpiece deep layer is gushed out; workpiece surface will be remained in; the zinc solution of high temperature just well can not adhere to the zinc-plated protective layer of formation, causes scrapping of workpiece.Obviously, prior art track girder cast steel supporter surface heat zinc immersion treatment process also exists effectively can not remove cast steel supporter internal residual greasy dirt, workpiece surface hot dip galvanizing quality can not ensure, causes cast steel supporter antiseptic property significantly to decline, affects city railcar security problems.
Summary of the invention
What exist for solution prior art track girder cast steel supporter surface heat zinc immersion treatment process effectively can not remove cast steel supporter internal residual greasy dirt, workpiece surface hot dip galvanizing quality can not ensure, cause cast steel supporter antiseptic property significantly to decline, affect city railcar security problems.The present invention proposes a kind of track girder cast steel supporter surface heat zinc immersion treatment process.
Track girder cast steel supporter surface heat zinc immersion treatment process of the present invention, is characterized in that: comprise following key step:
S1: pending track girder cast steel supporter is checked;
S2: equipment prepares, and comprises annealing furnace, temperature monitoring apparatus, plate pusher;
S3: workpiece prepares, and is placed on plate pusher by track girder cast steel supporter traveling crane, puts neat, pushes in annealing furnace, controls the distance of track girder cast steel supporter apart from furnace wall, closes upper furnace door;
S4: process of deoiling, adopts combustion medium combustion heating in annealing furnace to deoil process, wherein,
Heat up and control: be progressively warming up to 450-480 DEG C, the heating-up time is 2 hours;
Soaking time: 450-480 DEG C of insulation 110-130 minute, soaking time is 2 hours;
Monitoring temperature: adopt temperature monitoring apparatus monitoring temperature, controls furnace temperature at 450-480 DEG C,
Cooling controls: be cooled to room temp to the track girder cast steel supporter after having processed, cooling time is 2 hours;
S5: check, detects track girder cast steel supporter surface after process cooling of deoiling;
S6: galvanizing, immerses in the zinc solution of 450-480 DEG C of high temperature fused state by track girder cast steel supporter after process cooling of deoiling, stops 30-50 second, take out.
Further, described track girder cast steel supporter is 250-300mm apart from furnace wall distance.
Further, the combustion medium that described annealing furnace adopts is Sweet natural gas.
Further, described cooling controls to adopt naturally cooling, and is cooled to room temp.
Further, range estimation or cotton yarn wiping examination is detected as described in.
The Advantageous Effects of track girder cast steel supporter surface of the present invention hot-dip galvanizing technique is the greasy dirt thoroughly removing track girder cast steel supporter inside, improve the sticking power of track girder cast steel supporter Zinc coat, improve track girder cast steel supporter antiseptic property, ensure city railcar safety.
Accompanying drawing explanation
Accompanying drawing 1 is track girder cast steel supporter surface heat zinc immersion art breading process flow sheet of the present invention.
Below in conjunction with the drawings and specific embodiments, track girder cast steel supporter surface heat zinc immersion art breading technique is further described.
Embodiment
Accompanying drawing 1 is track girder cast steel supporter surface heat zinc immersion process flow sheet of the present invention, as seen from the figure:
A kind of track girder cast steel supporter surface hot-dip galvanizing technique, comprises following key step:
S1: former process prepares, and checks pending track girder cast steel supporter; Check whether and meet the processing requirements that deoils, do not meet and then carry out processing treatment.
S2: equipment prepares, and comprises annealing furnace, temperature monitoring apparatus, plate pusher;
S3: workpiece prepares, and is placed on plate pusher by track girder cast steel supporter traveling crane, puts neat, pushes in annealing furnace, controls the distance of track girder cast steel supporter apart from furnace wall, closes upper furnace door;
S4: process of deoiling, adopts combustion medium combustion heating in annealing furnace to deoil process,
Heat up and control: be progressively warming up to 450-480 DEG C,
Soaking time: 450-480 DEG C of insulation 110-130 minute,
Monitoring temperature: adopt temperature monitoring apparatus monitoring temperature, controls furnace temperature, remains between 450-480 DEG C,
Cooling controls: be cooled to room temp to the track girder cast steel supporter after having processed;
S5: check.To deoiling, the cooled track girder cast steel supporter surface of process is detected;
S6: galvanizing, galvanizing, immerses in the zinc solution of 450-480 DEG C of high temperature fused state by track girder cast steel supporter after process cooling of deoiling, stops 30-50 second, take out.
Track girder cast steel supporter is 250-300mm apart from furnace wall distance.
The combustion medium that annealing furnace adopts is Sweet natural gas.Be attached in track girder casting abutment surface without solid residue material after combustion of natural gas.
Cooling controls to adopt naturally cooling, and is cooled to room temp.
Detection can wipe examination for range estimation or cotton yarn.
The intensification control of track girder cast steel supporter of the present invention surface hot-dip galvanizing technique, soaking time and cooling period are 2 hours.
Through the track girder cast steel supporter that track girder cast steel supporter surface heat zinc immersion art breading of the present invention is crossed, when carrying out hot-dip galvanizing technique process again, do not have greasy dirt to discharge from loose hole, pollute workpiece surface, the metallic zinc of melting state can immersion plating preferably at workpiece surface, improve the sticking power of zinc coating, improve the antiseptic property of track girder cast steel supporter, ensure city railcar safety.
The Advantageous Effects of track girder cast steel supporter surface of the present invention hot-dip galvanizing technique is the greasy dirt thoroughly removing track girder cast steel supporter inside, improve the sticking power of track girder cast steel supporter Zinc coat, improve the antiseptic property of track girder cast steel supporter, ensure city railcar safety.
Claims (5)
1. a track girder cast steel supporter surface heat zinc immersion treatment process, is characterized in that: comprise following key step:
S1: pending track girder cast steel supporter is checked;
S2: equipment prepares, and comprises annealing furnace, temperature monitoring apparatus, plate pusher;
S3: workpiece prepares, and is placed on plate pusher by track girder cast steel supporter traveling crane, puts neat, pushes in annealing furnace, controls the distance of track girder cast steel supporter apart from furnace wall, closes upper furnace door;
S4: process of deoiling, adopts combustion medium combustion heating in annealing furnace to deoil process, wherein,
Heat up and control: be progressively warming up to 450-480 DEG C, the period of heating up is 2 hours;
Soaking time: be incubated 2 hours;
Monitoring temperature: adopt temperature monitoring apparatus monitoring temperature, controls furnace temperature at 450-480 DEG C;
Cooling controls: be cooled to room temp to the track girder cast steel supporter after having processed, cooling time is 2 hours;
S5: check, detects track girder cast steel supporter surface after process cooling of deoiling;
S6: galvanizing, immerses in the zinc solution of 450-480 DEG C of high temperature fused state by track girder cast steel supporter after process cooling of deoiling, stops 30-50 second, take out.
2. track girder cast steel supporter surface heat zinc immersion treatment process according to claim 1, is characterized in that, described track girder cast steel supporter is 250-300mm apart from furnace wall distance.
3. track girder cast steel supporter surface heat zinc immersion treatment process according to claim 1, is characterized in that, the combustion medium that described annealing furnace adopts is Sweet natural gas.
4. track girder cast steel supporter surface heat zinc immersion treatment process according to claim 1, is characterized in that, described cooling controls to adopt naturally cooling, and is cooled to room temp.
5. track girder cast steel supporter surface heat zinc immersion treatment process according to claim 1, is characterized in that, described in be detected as range estimation or cotton yarn wipe examination.
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| CN201210593337.9A CN102978556B (en) | 2012-12-31 | 2012-12-31 | Surface hot-dip galvanizing process of track beam cast steel support |
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| CN201210593337.9A CN102978556B (en) | 2012-12-31 | 2012-12-31 | Surface hot-dip galvanizing process of track beam cast steel support |
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| CN102978556B true CN102978556B (en) | 2015-04-08 |
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| CN107419208A (en) * | 2017-08-08 | 2017-12-01 | 合肥正明机械有限公司 | A kind of surface zinc-plated processing technique of cast steel workpiece |
| CN107502847A (en) * | 2017-08-08 | 2017-12-22 | 合肥正明机械有限公司 | A kind of processing technology for lifting ironcasting antiseptic property |
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| US4242154A (en) * | 1979-10-03 | 1980-12-30 | Kaiser Steel Corporation | Preheat and cleaning system |
| CA1255897A (en) * | 1985-07-10 | 1989-06-20 | Nippon Kokan Kabushiki Kaisha | Continuously treating line for steel bands having a heating furnace by directly flaming |
| JP2006274409A (en) * | 2005-03-30 | 2006-10-12 | Jfe Steel Kk | Apparatus for manufacturing galvannealed steel sheet |
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| 轻轨PC梁铸钢支座表面防腐回顾与探讨;赵有文;《重庆电镀与涂料涂装》;20060228(第1期总第82期);第73-75页 * |
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Denomination of invention: Surface hot-dip galvanizing process of track beam cast steel support Effective date of registration: 20180117 Granted publication date: 20150408 Pledgee: Chongqing mechanical and electrical Holding Group Finance Co., Ltd. Pledgor: Chongqing Water Turbine Works Co., Ltd. Registration number: 2018980000007 |
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Date of cancellation: 20190118 Granted publication date: 20150408 Pledgee: Chongqing mechanical and electrical Holding Group Finance Co., Ltd. Pledgor: Chongqing Water Turbine Works Co., Ltd. Registration number: 2018980000007 |
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Denomination of invention: Surface hot-dip galvanizing process of track beam cast steel support Effective date of registration: 20190320 Granted publication date: 20150408 Pledgee: Chongqing mechanical and electrical Holding Group Finance Co., Ltd. Pledgor: Chongqing Water Turbine Works Co., Ltd. Registration number: 2019500000007 |
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