CN102517941A - Production process of contact net anchorage steel wire rope - Google Patents
Production process of contact net anchorage steel wire rope Download PDFInfo
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- CN102517941A CN102517941A CN201110367847XA CN201110367847A CN102517941A CN 102517941 A CN102517941 A CN 102517941A CN 201110367847X A CN201110367847X A CN 201110367847XA CN 201110367847 A CN201110367847 A CN 201110367847A CN 102517941 A CN102517941 A CN 102517941A
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Abstract
The invention discloses a production process of a contact net anchorage steel wire rope. The production process comprises the following steps: carrying out surface acid cleaning and phosphating; drawing; carrying out lead bath heat treatment; galvanizing; drawing; detecting; entwisting; stranding; forging; and greasing. The production process has the advantages of convenience in operation and time-saving and labor-saving properties; and the produced contact net anchorage steel wire rope has the advantages of high breaking force, long fatigue service life, good abrasion resistance and good corrosion resistance.
Description
Technical field
The present invention relates to the cast anchor production technology of steel wire rope of a kind of contact net.
Background technology
At present, electrification railway contact net weighs down takes turns the steel wire rope that uses on the tensioner that casts anchor, comprising 156 steel wires; Because the steel wire negligible amounts, bulkfactor is low, and the sth. made by twisting system stress between thigh and the thigh is bigger; In use, steel wire rope rotates easily, and thigh is little with the contact area of thigh simultaneously; Surface irregularity, fatigue life is little.
Summary of the invention
The objective of the invention is in order to overcome above deficiency, a kind of easy to operate, time saving and energy saving, rupture pull force is high, tired long service life, contact net that wear-resisting corrosivity is good are casted anchor steel wire rope production technology is provided.
The object of the invention is realized through following technical scheme: the cast anchor production technology of steel wire rope of a kind of contact net may further comprise the steps:
A, surface acid-washing phosphatization are handled: select the high-quality carbon steel wire rod with high for use; High-carbon steel wire rod is got into pickling tube, remove the oxide skin of wire surface, behind high pressure washing, get into the phosphatization groove with the chemical reaction of hydrochloric acid and wire rod; In 70 ℃-80 ℃ phosphatization liquid, soaked 5-10 minute; Make wire surface be less than one deck phosphate coating, water flushing after saponification is beneficial to the steel wire drawing;
B, drawing: the phosphatization wire rod that steps A is obtained carries out the drawing of branch passage in water tank type wire drawing machine, the steel wire of the semi-finished product specification that obtains being scheduled to;
C, lead bath heat treatment: the steel wire of the semi-finished product specification of step B drawing is heated to 860-920 ℃ of laggard 500-520 ℃ lead bath through Muffle furnace, carries out lead patenting, make the interior tissue of steel wire be converted into the sorbite tissue that is beneficial to drawing;
D, zinc-plated: the steel wire after the heat treatment is carried out surperficial descale, flushing, coating help paint, oven dry, entering zinc pot zinc-plated, zinc liquid temperature is 440-460 ℃, makes Steel Wire Surface coat fine and close zinc layer, makes steel wire have antiseptic property;
E, drawing: with step D obtain zinc-plated after steel wire on water tank type wire drawing machine, carry out shunting time drawing, each the specification rope making wire that obtains being scheduled to;
F, the steel wire after the drawing is carried out the detection of mechanical performance each item index, its index comprises diameter, intensity, reverses, crooked, zinc layer weight, and after the assay was approved, steel wire gets into the semi-finished product warehouse;
G, sth. made by twisting thigh: the steel wire that step F is obtained carries out spooling; On 6/200 strander, 18/300 strander and 24/200 strander, produce the steel strand that 7 ordinary steel wire, 19 Gen Walin gulp down formula steel wire and 25 filled type steel wires respectively; The sth. made by twisting method is: the right ordinary lay of steel wire rope; The central strand left-hand lay, the right-laid of internal layer thigh, outer layer strand left-hand lay; Lay pitch multiple is: steel wire rope 6-6.5 times, outer layer strand 9-9.5 times, internal layer thigh 9-9.5 times, central strand 8-8.5 doubly; In twisting with the fingers burst process, adopt and drench oily technology, make and evenly pour high-low temperature resistant asphaltic base grease on the steel strand;
H, close rope: with each specification totally 25 thighs on 24/200 crank closer, once twist with the fingers system, the ectonexine lay pitch equates, each burst uniform tension in order adopts many group post-formers, eliminates the sth. made by twisting system stress when twisting with the fingers system;
I, forge: the rope that sth. made by twisting is made forges on forging machine, through obtaining fine and close smooth steel wire rope after forging continuously;
J, grease: on the steel wire rope that has forged, be coated with the high-low temperature resistant grease, last spiral packing.
The present invention compared with prior art has the following advantages:
1, adopt high-strength galvanized steel wire production, adopt parallel closely knit sth. made by twisting on the structure, steel wire always reaches 403 with number, steel wire rope from the coarse to fine, bulkfactor reaches 0.7-0.76mm, the rupture pull force when keeping former thick specification state improves whole rope rupture pull force greatly;
Adopt after-processing technology when 2, producing, the sth. made by twisting system stress that produces when twisting with the fingers thigh and closing rope is by fully elimination, and fatigue performance is good, and steel wire rope has good not rotatory, has improved tired service life;
3, the slit diminishes between thigh and the thigh, and the slit is closure state, and smooth surface is smooth, has strengthened when steel wire rope uses and the contact area of coupling race, makes the anti-extruding wear resistance raising of steel wire rope;
4, after forging, owing to the mutual extrusion effect between thigh and the thigh, make the sectional area of thigh no longer keep original circular state, contact area increase between thigh and the thigh, steel cord structure is more stable, the structural stretch minimizing in the use;
5, select high-quality high-low temperature resistant grease for use; The steel wire of internal layer thigh adopts twists with the fingers burst oily technology of pouring, and the cover wire thigh adopts and closes rope immersion oil technology, has grease-filled fully between the rope strand; Friction when reducing the steel wire rope use between thigh and the thigh; The environmental requirement of harsh weather when satisfying the steel wire rope use, the wear-resisting corrosive nature of raising steel wire rope, thereby the service life of improving steel wire rope.
The specific embodiment:
In order to deepen to understanding of the present invention, will combine embodiment that the present invention is made further detailed description below, this embodiment only is used to explain the present invention, does not constitute the qualification to protection domain of the present invention.
Cast anchor a kind of specific embodiment of production technology of steel wire rope of contact net of the present invention may further comprise the steps:
A, surface acid-washing phosphatization are handled: select the high-quality carbon steel wire rod with high for use; High-carbon steel wire rod is got into pickling tube, remove the oxide skin of wire surface, behind high pressure washing, get into the phosphatization groove with the chemical reaction of hydrochloric acid and wire rod; In 70 ℃-80 ℃ phosphatization liquid, soaked 5-10 minute; Make wire surface be less than one deck phosphate coating, water flushing after saponification is beneficial to the steel wire drawing;
B, drawing: the phosphatization wire rod that steps A is obtained carries out the drawing of branch passage in water tank type wire drawing machine, the steel wire of the semi-finished product specification that obtains being scheduled to;
C, lead bath heat treatment: the steel wire of the semi-finished product specification of step B drawing is heated to 860-920 ℃ of laggard 500-520 ℃ lead bath through Muffle furnace, carries out lead patenting, make the interior tissue of steel wire be converted into the sorbite tissue that is beneficial to drawing;
D, zinc-plated: the steel wire after the heat treatment is carried out surperficial descale, flushing, coating help paint, oven dry, entering zinc pot zinc-plated, zinc liquid temperature is 440-460 ℃, makes Steel Wire Surface coat fine and close zinc layer, makes steel wire have antiseptic property;
E, drawing: with step D obtain zinc-plated after steel wire on water tank type wire drawing machine, carry out shunting time drawing, each the specification rope making wire that obtains being scheduled to;
F, the steel wire after the drawing is carried out the detection of mechanical performance each item index, its index comprises diameter, intensity, reverses, projects such as bending, zinc layer weight, and after the assay was approved, steel wire gets into the semi-finished product warehouse;
G, sth. made by twisting thigh: the steel wire that step F is obtained carries out spooling; On 6/200 strander, 18/300 strander and 24/200 strander, produce the steel strand that 7 ordinary steel wire, 19 Gen Walin gulp down formula steel wire and 25 filled type steel wires respectively; The sth. made by twisting method is: the right ordinary lay of steel wire rope; The central strand left-hand lay, the right-laid of internal layer thigh, outer layer strand left-hand lay; Lay pitch multiple is: steel wire rope 6-6.5 times, outer layer strand 9-9.5 times, internal layer thigh 9-9.5 times, central strand 8-8.5 doubly; In twisting with the fingers burst process, adopt and drench oily technology, make and evenly pour high-low temperature resistant asphaltic base grease on the steel strand;
H, close rope: with each specification totally 25 thighs on 24/200 crank closer, once twist with the fingers system, the ectonexine lay pitch equates, each burst uniform tension in order adopts many group post-formers, eliminates the sth. made by twisting system stress when twisting with the fingers system;
I, forge: the rope that sth. made by twisting is made forges on forging machine, forges continuously through 300 rev/mins of pintongs forging dies, obtains fine and close smooth steel wire rope; Through reaching following effect after forging: (1), reach desirable appearance and size (size and out-of-roundness are effectively controlled); Steel wire rope from the coarse to fine; Bulkfactor reaches 0.7-0.76mm, and the rupture pull force when keeping former thick specification state improves whole rope rupture pull force greatly; (2), twist with the fingers strand with the sth. made by twisting system stress that closes when restricting and fully eliminate, have good not rotatory, improved tired service life; (3), strand with strand between the slit diminish, the slit is closure state, smooth surface is smooth, with the contact area of coupling race, makes the anti-extruding wear resistance raising of steel wire rope when having strengthened steel wire rope and using; (4), after forging since strand with strand between the mutual extrusion effect, the sectional area that makes strand no longer keeps original circular state, strand with strand between the contact area increase, steel cord structure is more stable, the structural stretch minimizing in the use.
J, grease: on the steel wire rope that has forged, be coated with the high-low temperature resistant grease, last spiral packing.
Contact net casts anchor steel wire rope by central strand, internal layer and outer the composition; The periphery of central strand is an internal layer, and the periphery of internal layer is outer, and central strand gulps down the formula steel wire by 19 Gen Walin and twists with the fingers; Internal layer is made up of 12 strands of steel wire of internal layer thighs; Per share steel wire of internal layer thigh is twisted with the fingers by 7 steel wires, and skin is made up of 12 strands of cover wire thighs, and per share cover wire thigh is twisted with the fingers by 25 filled type steel wires; The lay pitch of 12 strands of cover wire thighs in the lay pitch of 12 strands of steel wire of internal layer thighs in the internal layer and the skin is consistent, and is line between per share steel wire of internal layer thigh and the per share cover wire thigh and contacts.
The employing high-strength galvanized steel wire is produced, and adopts parallel closely knit sth. made by twisting on the structure, and steel wire always reaches 403 with number, steel wire rope from the coarse to fine, bulkfactor reaches 0.7-0.76mm, the rupture pull force when keeping former thick specification state improves whole rope rupture pull force greatly; Adopt after-processing technology during production, the sth. made by twisting system stress that produces when twisting with the fingers thigh and closing rope is by fully elimination, and fatigue performance is good, and steel wire rope has good not rotatory, has improved tired service life; The slit diminishes between thigh and the thigh, and the slit is closure state, and smooth surface is smooth, has strengthened when steel wire rope uses and the contact area of coupling race, makes the anti-extruding wear resistance raising of steel wire rope; After forging, owing to the mutual extrusion effect between thigh and the thigh, make the sectional area of thigh no longer keep original circular state, contact area increase between thigh and the thigh, steel cord structure is more stable, the structural stretch minimizing in the use; Select high-quality high-low temperature resistant grease for use; The steel wire of internal layer thigh adopts twists with the fingers burst oily technology of pouring, and the cover wire thigh adopts and closes rope immersion oil technology, has grease-filled fully between the rope strand; Friction when reducing the steel wire rope use between thigh and the thigh; The environmental requirement of harsh weather when satisfying the steel wire rope use, the wear-resisting corrosive nature of raising steel wire rope, thereby the service life of improving steel wire rope.
Claims (1)
1. the contact net production technology of steel wire rope of casting anchor is characterized in that: specifically comprise following processing step:
A, surface acid-washing phosphatization are handled: select the high-quality carbon steel wire rod with high for use; High-carbon steel wire rod is got into pickling tube, remove the oxide skin of wire surface, behind high pressure washing, get into the phosphatization groove with the chemical reaction of hydrochloric acid and wire rod; In 70 ℃-80 ℃ phosphatization liquid, soaked 5-10 minute; Make wire surface be less than one deck phosphate coating, water flushing after saponification is beneficial to the steel wire drawing;
B, drawing: the phosphatization wire rod that steps A is obtained carries out the drawing of branch passage in water tank type wire drawing machine, the steel wire of the semi-finished product specification that obtains being scheduled to;
C, lead bath heat treatment: the steel wire of the semi-finished product specification of step B drawing is heated to 860-920 ℃ of laggard 500-520 ℃ lead bath through Muffle furnace, carries out lead patenting, make the interior tissue of steel wire be converted into the sorbite tissue that is beneficial to drawing;
D, zinc-plated: the steel wire after the heat treatment is carried out surperficial descale, flushing, coating help paint, oven dry, entering zinc pot zinc-plated, zinc liquid temperature is 440-460 ℃, makes Steel Wire Surface coat fine and close zinc layer, makes steel wire have antiseptic property;
E, drawing: with step D obtain zinc-plated after steel wire on water tank type wire drawing machine, carry out shunting time drawing, each the specification rope making wire that obtains being scheduled to;
F, the steel wire after the drawing is carried out the detection of mechanical performance each item index, its index comprises diameter, intensity, reverses, crooked, zinc layer weight, and after the assay was approved, steel wire gets into the semi-finished product warehouse;
G, sth. made by twisting thigh: the steel wire that step F is obtained carries out spooling; On 6/200 strander, 18/300 strander and 24/200 strander, produce the steel strand that 7 ordinary steel wire, 19 Gen Walin gulp down formula steel wire and 25 filled type steel wires respectively; The sth. made by twisting method is: the right ordinary lay of steel wire rope; The central strand left-hand lay, the right-laid of internal layer thigh, outer layer strand left-hand lay; Lay pitch multiple is: steel wire rope 6-6.5 times, outer layer strand 9-9.5 times, internal layer thigh 9-9.5 times, central strand 8-8.5 doubly; In twisting with the fingers burst process, adopt and drench oily technology, make and evenly pour high-low temperature resistant asphaltic base grease on the steel strand;
H, close rope: with each specification totally 25 thighs on 24/200 crank closer, once twist with the fingers system, the ectonexine lay pitch equates, each burst uniform tension in order adopts many group post-formers, eliminates the sth. made by twisting system stress when twisting with the fingers system;
I, forge: the rope that sth. made by twisting is made forges on forging machine, through obtaining fine and close smooth steel wire rope after forging continuously;
J, grease: on the steel wire rope that has forged, be coated with the high-low temperature resistant grease, last spiral packing.
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| CN102991015A (en) * | 2012-12-12 | 2013-03-27 | 华勤钢丝绳有限公司 | High-strength steel wire, preparation method thereof and novel ultrahigh-strength steel wire rope for conveyor belt |
| CN103191942A (en) * | 2013-04-22 | 2013-07-10 | 江阴法尔胜线材制品有限公司 | Combinational drawing production method of galvanized carbon steel wire |
| CN103541251A (en) * | 2012-07-11 | 2014-01-29 | 南通市正扬钢绳有限公司 | Method for producing steel wire rope |
| CN103669053A (en) * | 2013-10-14 | 2014-03-26 | 无锡通用钢绳有限公司 | Non-rotating wire rope |
| CN103785704A (en) * | 2014-01-23 | 2014-05-14 | 江苏兴达钢帘线股份有限公司 | Method for producing torsion-exfoliation-resistant extra-high-strength steel wires with excellent fatigue resistance |
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Application publication date: 20120627 |