CN103352381A - Production method of high-strength steel rope - Google Patents
Production method of high-strength steel rope Download PDFInfo
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- CN103352381A CN103352381A CN201310316173XA CN201310316173A CN103352381A CN 103352381 A CN103352381 A CN 103352381A CN 201310316173X A CN201310316173X A CN 201310316173XA CN 201310316173 A CN201310316173 A CN 201310316173A CN 103352381 A CN103352381 A CN 103352381A
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Abstract
The invention provides a production method of a high-strength steel rope. The production method of the high-strength steel rope is characterized that low carbon is selected and used as raw materials of the steel rope, and the production technology comprises a first step of surface processing, wherein wire materials are placed on a pay-off rack, the diameter of the wire materials is 5.5mm, hot-rolled oxide-scale is eliminated through mechanical dephophorization equipment, high-power ultrasonic cleaning is conducted on the wire materials, the wire materials enter phosphating equipment, phosphating is conducted on the wire materials, the wire materials enter drying equipment and are dried finally, and preprocessed wire materials are obtained; a second step of drawing, wherein the preprocessed wire materials obtained from the first step are placed on a drawing machine, multi-pass drawing is conducted on the preprocessed wire materials, semi-finished wire materials are obtained, and winding up is conducted through a spool; a third step of water bath heat treatment and galvanization, wherein the semi-finished wire materials obtained in the second step are placed on the pay-off rack, the semi-finished wire materials are heated in a four-section form heat treatment furnace, quenching, drying, galvanization and cooling are conducted on the semi-finished wire materials, semi-finished wire materials are obtained, and winding up is conducted; a fourth step of wet type drawing, wherein the semi-finished wire materials obtained in the third step are placed on the drawing machine, multi-pass drawing is conducted on the semi-finished wire materials, the compression angle of a wire-drawing die of each pass is 13-14 degrees, dedicated lubricating agent is used as lubricating agent, the concentration of the dedicated lubricating agent is 2%-3%, finished wire materials are obtained, and winding up is conducted through a spool; a fifth step of stranding and rope forming, wherein the finished wire materials are placed on a stranding machine, stranding and laying-up are conducted, and the finished steel stranded rope is obtained.
Description
Technical field
The present invention relates to a kind of production method of high strength steel cable.
Background technology
High-carbon steel is high because of its intensity, and good toughness has the heat-treated sturcture of tiny homogeneous, can satisfy the needs of drawing, twisting and performance homogeneity, is raw material so traditional steel cable manufacturing industry all adopts it.Its machining process route is roughly: wire raw material wire rods is removed hot rolling oxide skin, and---dry drawing---twist with the fingers thigh and close rope by (intermediate heat-treatment) normalizing---dry drawing (compression ratio is about 97%)---.But because its strain hardening coefficient is larger, namely in process, compression ratio surpasses after 85%, and intensity sharply rises, and causes its toughness to worsen.So in process, need to be through heat treatment repeatedly to eliminate its workhardness and to guarantee final performance.Yet so just not only caused the waste of resource, but also hindered the raising of labor productivity.In addition, because high-carbon steel has higher intensity and hardness, so energy consumption and mould consumption is higher in the production process, the difficult control of wire broken rate.
And mild steel does not have the advantage of high-carbon steel, and its production process is long, energy consumption, mould consumption height, and wire broken rate is high, and labor productivity is low.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, provide that a kind of production process is few, energy consumption, mould consumption, wire broken rate is low, labor productivity is high mild steel twisted wire and production technology thereof.
The object of the present invention is achieved like this:
Mild steel twisted wire of the present invention and production technology thereof, it is selected to be used as steel wire rope with low-carbon (LC) SWRH22A steel or 20#-25# steel and makes raw material, and its production craft step is as follows:
Step 1, surface treatment place ￠ 5.5mm stockline material on the pay off rack, remove hot rolling oxide skin through mechanical dephosphorizing equipment, and high-power ultrasonics enters phosphating equipment again and carries out the phosphatization processing, enters at last the drying plant oven dry, gets the preliminary treatment wire rod;
Step 2, drawing get the preliminary treatment wire rod with step 1 and place on the drawbench, carry out multi pass drawing, get the semi-finished product wire rod, spool spooling;
Step 3, water-bath heat treatment, zinc-platedly step 2 is got the semi-finished product wire rod place on the pay off rack, through the heating of four-part form heat-treatment furnace, heating-up temperature is: 860 ℃～920 ℃, then enter tank and carry out water-quenching, oven dry, water-bath agent temperature is 85 ℃, concentration is 5%, carries out at last zinc plating, and galvanizing solution is ZnSO47H2O, concentration is 350-500g/L, and pH value is 1.5-3.0, and electroplating current is 650A/ million, take-up speed is that 50m/ divides, cooling gets the semi-finished product wire rod, take-up;
Step 4, wet type drawing get the semi-finished product wire rod with step 3 and place on the drawbench, carry out multi pass drawing, and each passage wire drawing die compression angle is 13-14 °, and lubricant adopts the drawing lubricant agent special, and concentration is 2%～3%, gets finished wire rod, spool spooling;
Step 5, twist with the fingers strand to become rope that step 4 is got the semi-finished product wire rod to place to twist with the fingers on the strander and strand close rope, get the finished steel twisted wire.
Four-part form heat-treatment furnace heating-up temperature in the step 3 is 860 ℃, 880 ℃, 900 ℃, 920 ℃.
The passage of the multi pass drawing of step 4 kind is: 1.4-1.306-1.19-1.084-0.988-0.9-0.82-0.747-0.681-0.62-0.5 65-0.50-0.45-0.40.
Mild steel twisted wire of the present invention and production technology thereof have the following advantages:
1, the new material that the selection of mild steel twisted wire of the present invention and production technology thereof need not be traditional, make raw material and be used as steel wire rope with low-carbon (LC) SWRH22A steel or 20#-25# steel, through suitably processing and processing, can obtain equally tissue and the performance of homogeneous, reach various rope making wire standard-requireds fully.
2, for the production technology of mild steel twisted wire:
1. intermediate heat-treatment only adopts a water-bath to quench, and the austenitizing heating-up temperature can slightly reduce, and then has 920-960 ℃ of high-carbon steel heat treatment temperature to drop to 860-920 ℃ such as the 22# steel.Compare with traditional handicraft, saved both a large amount of energy consumptions, obviously environmental pollution has the heat treatment of dysgenic lead bath Isothermal Decomposition to the workman is healthy again, thereby has reduced production cost, has reduced supplementary product onsumption and power consumption, but improves simultaneously workman's operating environment.
2. strengthen operation drawing compression ratio (compression ratio can reach more than 95%), simplified production process, improved production efficiency.
3. the wire drawing die compression angle becomes 13-14 ° by 11-12 ° of high-carbon steel, and lubricant concentration 5% during by drawing high-carbon steel drops to about 2-3%.
3 compare with high-carbon steel, and under the prerequisite of same intensity, mild steel has higher toughness.Therefore, compare with high-carbon steel, have following characteristics:
1. can increase the drawing total draught, total draught can be increased to more than 95% by original 92%;
2. the zinc layer loss late in the time of can reducing steel wire drawing, for example the following rope making wire zinc of ￠ 0.30mm layer loss reduced to less than 10% by original 30%;
3. the power consumption in the time of can reducing pulling capacity and drawing, during such as wet drawing power consumption can reduce about 16%, but about 32 yuan of steel wire saves energy per ton;
4. can reduce the wire drawing die loss, by wire drawing die operational maintenance requirement, wire drawing die drops to 5/ton by original 15/ton during wet drawing;
5. the wire broken rate in the time of can obviously reducing wire drawing, wire broken rate drops to 5.4 times per ton by original 14 times per ton.This has not only improved the lumber recovery when producing, and has improved labor productivity.
The specific embodiment
The present invention relates to a kind of mild steel twisted wire and production technology thereof, its select need not be traditional new material, make raw material and be used as steel wire rope with low-carbon (LC) SWRH22A steel or 20#-25# steel, through suitably processing and processing, can obtain equally tissue and the performance of homogeneous, reach various rope making wire standard-requireds fully.
Its production craft step is as follows:
Step 1, surface treatment place ￠ 5.5mm stockline material on the pay off rack, remove hot rolling oxide skin through mechanical dephosphorizing equipment, and high-power ultrasonics cleans, and enter phosphating equipment again and carry out the phosphatization processing, enter at last the drying plant oven dry, get the preliminary treatment wire rod;
Step 2, drawing get the preliminary treatment wire rod with step 1 and place on the drawbench, carry out multi pass drawing, get the semi-finished product wire rod, spool spooling;
Step 3, water-bath heat treatment, zinc-platedly step 2 is got the semi-finished product wire rod place on the pay off rack, through the heating of four-part form heat-treatment furnace, heating-up temperature is followed successively by: 860 ℃, 880 ℃, 900 ℃, 920 ℃, then enter tank and carry out water-quenching, oven dry, water-bath agent temperature is 85 ℃, and concentration is 5%, carries out at last zinc plating, galvanizing solution is ZnSO47H2O, concentration is 350-500g/L, and pH value is 1.5-3.0, and electroplating current is 650A/ million, take-up speed is that 50m/ divides, cooling gets the semi-finished product wire rod, take-up;
Four-part form heat-treatment furnace heating in the above-mentioned steps three, heating-up temperature can also be followed successively by: 865 ℃, 880 ℃, 895 ℃, 910 ℃.
Step 4, wet type drawing get the semi-finished product wire rod with step 3 and place on the drawbench, carry out multi pass drawing, the passage of multi pass drawing is: 1.4-1.306-1.19-1.084-0.988-0.9-0.82-0.747-0.681-0.62-0.5 65-0.50-0.45-0.40, each passage wire drawing die compression angle is 13-14 °, lubricant adopts the drawing lubricant agent special, concentration is 2%～3%, gets finished wire rod, spool spooling;
Step 5, twist with the fingers strand to become rope that step 4 is got the semi-finished product wire rod to place to twist with the fingers on the strander and strand close rope, get the finished steel twisted wire.
Claims (8)
1. the production method of a high strength steel cable, it is characterized in that: select low-carbon (LC) to make raw material as steel wire rope, its production craft step is as follows: step 1, surface treatment place ￠ 5.5mm stockline material on the pay off rack, remove hot rolling oxide skin through mechanical dephosphorizing equipment, high-power ultrasonics cleans, enter again phosphating equipment and carry out the phosphatization processing, enter at last the drying plant oven dry, get the preliminary treatment wire rod; Step 2, drawing get the preliminary treatment wire rod with step 1 and place on the drawbench, carry out multi pass drawing, get the semi-finished product wire rod, spool spooling; Step 3, water-bath heat treatment, zinc-platedly step 2 is got the semi-finished product wire rod place on the pay off rack, through the heating of four-part form heat-treatment furnace, quench, oven dry, zinc-plated, cooling gets the semi-finished product wire rod, take-up; Step 4, wet type drawing get the semi-finished product wire rod with step 3 and place on the drawbench, carry out multi pass drawing, and each passage wire drawing die compression angle is 13-14 °, and lubricant adopts the drawing lubricant agent special, and concentration is 2%～3%, gets finished wire rod, spool spooling; Step 5, twist with the fingers strand to become rope that step 4 is got the semi-finished product wire rod to place to twist with the fingers on the strander and strand close rope, get the finished steel twisted wire.
2. method according to claim 1, it is characterized in that: the four-part form heat-treatment furnace heating-up temperature in the step 3 is 860 ℃, 880 ℃, 900 ℃, 920 ℃.
3. method according to claim 1, it is characterized in that: the passage of the multi pass drawing of step 4 kind is: 1.4-1.306-1.19-1.084-0.988-0.9-0.82-0.747-0.681-0.62-0.5 65-0.50-0.45-0.40.
4. method according to claim 1, it is characterized in that: the raw steel filament diameter of step 4 kind is 0.86-0.91mm, obtains diameter 1.09-1.12mm welding wire semi-finished product after copper facing, thickness of coating is 200-220um.
5. method according to claim 1, wherein, the heating-up temperature in the step 3 is: 860 ℃～920 ℃.
6. method according to claim 1, wherein, the water-bath agent temperature of described quenching is 85 ℃, concentration is 5%.
7. method according to claim 1, wherein, described zinc-plated be zinc plating, galvanizing solution is ZnSO47H2O, concentration is 350-500g/L, pH value is 1.5-3.0, electroplating current is 650A/ million.
8. method according to claim 1, wherein, take-up speed is that 50m/ divides.
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| CN201310316173XA CN103352381A (en) | 2013-07-25 | 2013-07-25 | Production method of high-strength steel rope |
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| CN103643155A (en) * | 2013-11-20 | 2014-03-19 | 江苏天舜金属材料集团有限公司 | Processing method of fast-quenched prestressed steel strand |
| CN103639402A (en) * | 2013-11-21 | 2014-03-19 | 江苏天舜金属材料集团有限公司 | Method for manufacturing prestress steel strand coated with nichrome powder |
| CN103639231A (en) * | 2013-11-21 | 2014-03-19 | 江苏天舜金属材料集团有限公司 | Chromium-molybdenum low-alloy zinc-plating steel strand manufacturing method |
| CN103643572A (en) * | 2013-11-21 | 2014-03-19 | 江苏天舜金属材料集团有限公司 | Production method for thermal treatment prestressed steel strand |
| CN103962401A (en) * | 2014-01-17 | 2014-08-06 | 东南大学 | Production method of low-defect high-strength steel wire |
| CN104372895A (en) * | 2014-05-21 | 2015-02-25 | 江苏苏博特新材料股份有限公司 | High-performance reinforcing steel bar and preparation method thereof |
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| CN104741399A (en) * | 2015-04-07 | 2015-07-01 | 奥盛新材料股份有限公司 | Prestress steel strand manufacturing tool and steel strand manufacturing method |
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| CN107511406A (en) * | 2017-08-03 | 2017-12-26 | 慈溪市龙山汽配有限公司 | A kind of drawing process of wiper arm |
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Application publication date: 20131016 |