CN112387804A - Low-carbon steel strand drawing production process - Google Patents
Low-carbon steel strand drawing production process Download PDFInfo
- Publication number
- CN112387804A CN112387804A CN201910765645.7A CN201910765645A CN112387804A CN 112387804 A CN112387804 A CN 112387804A CN 201910765645 A CN201910765645 A CN 201910765645A CN 112387804 A CN112387804 A CN 112387804A
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- Prior art keywords
- wire
- low
- carbon steel
- production process
- finished
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/04—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/02—Drawing metal wire or like flexible metallic material by drawing machines or apparatus in which the drawing action is effected by drums
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/04—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire
- B21C37/042—Manufacture of coated wire or bars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C43/00—Devices for cleaning metal products combined with or specially adapted for use with machines or apparatus provided for in this subclass
- B21C43/02—Devices for cleaning metal products combined with or specially adapted for use with machines or apparatus provided for in this subclass combined with or specially adapted for use in connection with drawing or winding machines or apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C43/00—Devices for cleaning metal products combined with or specially adapted for use with machines or apparatus provided for in this subclass
- B21C43/02—Devices for cleaning metal products combined with or specially adapted for use with machines or apparatus provided for in this subclass combined with or specially adapted for use in connection with drawing or winding machines or apparatus
- B21C43/04—Devices for de-scaling wire or like flexible work
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/525—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length for wire, for rods
Abstract
The invention relates to the technical field of wire drawing, in particular to a low-carbon steel strand drawing production process, which comprises the following steps: surface treatment, drawing, water bath heat treatment, galvanizing, wet drawing and stranding into ropes to finally obtain finished steel strands. The invention has the advantages of less production procedures, low energy consumption, low wire breakage rate and high labor productivity.
Description
Technical Field
The invention relates to the technical field of wire drawing, in particular to a low-carbon steel strand drawing production process.
Background
The high-carbon steel has high strength, good toughness and fine and uniform heat treatment structure, and can meet the working requirements of drawing, twisting and using performance uniformity, so that the traditional steel wire rope manufacturing industry adopts the high-carbon steel as a raw material. However, since the work hardening coefficient of the high carbon steel is large, that is, the strength is rapidly increased after the compressibility exceeds 85% during the working process, which results in deterioration of toughness, it is necessary to perform heat treatment several times during the working process to remove the work hardness and ensure the final use performance, but this not only results in waste of resources, but also hinders the improvement of the production efficiency. In addition, because high-carbon steel has higher strength and hardness, the energy consumption is higher in the production process, the wire breakage rate is difficult to control, and because low-carbon steel has low strength and hardness, good plasticity and toughness, good cold formability, few production processes, low energy consumption, low wire breakage rate, high labor productivity and the like, the low-carbon steel also gradually becomes a raw material used in the modern steel wire rope manufacturing industry, and the method has important significance for preparing wires with excellent service performance.
Disclosure of Invention
The invention aims to provide a drawing production process of a low-carbon steel strand aiming at the defects of the prior art.
In order to achieve the purpose, the low-carbon steel strand drawing production process comprises the following steps:
step one, surface treatment: placing a low-carbon steel wire on a pay-off rack, removing hot rolling oxide skin by mechanical dephosphorization equipment, cleaning, then respectively placing the low-carbon steel wire into a cleaning tank for cleaning, pickling in a pickling tank, then entering the phosphating equipment for phosphating, and finally entering drying equipment for drying to obtain a pretreated wire;
step two, drawing: placing the pretreated wire rod obtained in the step one on a drawing machine, carrying out multi-pass drawing to obtain a semi-finished wire rod, and taking up the wire rod by using a spool;
step three, water bath heat treatment and galvanization: placing the semi-finished wire obtained in the step two on a pay-off rack, and heating the wire through a four-section type heat treatment furnace at the heating temperature of: 860-920 ℃, then entering a water tank for water quenching and drying, wherein the temperature of a water bath agent is 85 ℃, the concentration is 5%, finally performing electroplating galvanization, the galvanizing solution is ZnSO 4.7H2O, the concentration is 350-500g/L, the pH value is 1.5-3.0, the electroplating current is 650A/MB, the take-up speed is 50 m/min, cooling to obtain a semi-finished wire, and taking up the wire;
step four, wet drawing: placing the semi-finished wire rod obtained in the step three on a drawing machine, carrying out multi-pass drawing operation, wherein the compression angle of a wire drawing die in each pass is 13-14 degrees, the lubricant is a drawing special lubricant, the concentration is 2% -3%, the finished wire rod is obtained, and taking up by using a spool;
step five, stranding into ropes: and D, putting the finished wire rods obtained in the step four on a stranding machine for stranding and rope combining to finally obtain the finished steel stranded wire.
Preferably, the heating temperature of the four-stage heat treatment furnace in the third step is 860 ℃, 880 ℃, 900 ℃ and 920 ℃ respectively;
preferably, in the fourth step, the deformation amount of each drawing is 10-30%.
Preferably, the material of the low-carbon steel wire rod is 20 steel or 25 steel.
The invention has the beneficial effects that: the invention relates to a low-carbon steel strand drawing production process, which comprises the following steps of:
step one, surface treatment: placing a low-carbon steel wire on a pay-off rack, removing hot rolling oxide skin by mechanical dephosphorization equipment, cleaning, then respectively placing the low-carbon steel wire into a cleaning tank for cleaning, pickling in a pickling tank, then entering the phosphating equipment for phosphating, and finally entering drying equipment for drying to obtain a pretreated wire;
step two, drawing: placing the pretreated wire rod obtained in the step one on a drawing machine, carrying out multi-pass drawing to obtain a semi-finished wire rod, and taking up the wire rod by using a spool;
step three, water bath heat treatment and galvanization: placing the semi-finished wire obtained in the step two on a pay-off rack, and heating the wire through a four-section type heat treatment furnace at the heating temperature of: 860-920 ℃, then entering a water tank for water quenching and drying, wherein the temperature of a water bath agent is 85 ℃, the concentration is 5%, finally performing electroplating galvanization, the galvanizing solution is ZnSO 4.7H2O, the concentration is 350-500g/L, the pH value is 1.5-3.0, the electroplating current is 650A/MB, the take-up speed is 50 m/min, cooling to obtain a semi-finished wire, and taking up the wire;
step four, wet drawing: placing the semi-finished wire rod obtained in the step three on a drawing machine, carrying out multi-pass drawing operation, wherein the compression angle of a wire drawing die in each pass is 13-14 degrees, the lubricant is a drawing special lubricant, the concentration is 2% -3%, the finished wire rod is obtained, and taking up by using a spool;
step five, stranding into ropes: and D, putting the finished wire rods obtained in the step four on a stranding machine for stranding and rope combining to finally obtain the finished steel stranded wire.
The invention has the advantages of less production procedures, low energy consumption, low wire breakage rate and high labor productivity.
Detailed Description
The present invention is described in detail below.
The invention provides a low-carbon steel strand drawing production process, which comprises the following steps:
step one, surface treatment: placing a low-carbon steel wire on a pay-off rack, removing hot rolling oxide skin by mechanical dephosphorization equipment, cleaning, then respectively placing the low-carbon steel wire into a cleaning tank for cleaning, pickling in a pickling tank, then entering the phosphating equipment for phosphating, and finally entering drying equipment for drying to obtain a pretreated wire;
step two, drawing: placing the pretreated wire rod obtained in the step one on a drawing machine, carrying out multi-pass drawing to obtain a semi-finished wire rod, and taking up the wire rod by using a spool;
step three, water bath heat treatment and galvanization: placing the semi-finished wire obtained in the step two on a pay-off rack, and heating the wire through a four-section type heat treatment furnace at the heating temperature of: 860-920 ℃, then entering a water tank for water quenching and drying, wherein the temperature of a water bath agent is 85 ℃, the concentration is 5%, finally performing electroplating galvanization, the galvanizing solution is ZnSO 4.7H2O, the concentration is 350-500g/L, the pH value is 1.5-3.0, the electroplating current is 650A/MB, the take-up speed is 50 m/min, cooling to obtain a semi-finished wire, and taking up the wire;
step four, wet drawing: placing the semi-finished wire rod obtained in the step three on a drawing machine, carrying out multi-pass drawing operation, wherein the compression angle of a wire drawing die in each pass is 13-14 degrees, the lubricant is a drawing special lubricant, the concentration is 2% -3%, the finished wire rod is obtained, and taking up by using a spool;
step five, stranding into ropes: and D, putting the finished wire rods obtained in the step four on a stranding machine for stranding and rope combining to finally obtain the finished steel stranded wire.
In the third step of this example, the four-stage heat treatment furnace is heated at 860 deg.C, 880 deg.C, 900 deg.C, and 920 deg.C, respectively.
In the fourth step of the present embodiment, the drawing deformation of each step is 10% to 30%.
The low carbon steel wire rod of the present embodiment is made of 20 steel or 25 steel.
The low-carbon steel strand drawing production process has the following advantages:
1. the low-carbon steel strand drawing production process of the invention does not select the traditional high-carbon steel any more, but selects the low-carbon steel, such as 20 steel or 25 steel, as the raw material for manufacturing the steel wire rope, and can obtain uniform organization and use performance through proper processing and treatment, thereby completely meeting the standard requirements of manufacturing various steel wire ropes.
2. The production process of the low-carbon steel stranded wire comprises the following steps:
the intermediate heat treatment only adopts one-time water bath quenching, the austenitizing heating temperature can be slightly reduced, and if 20 steel is compared with the heat treatment temperature of 920-.
Secondly, the drawing compression ratio of the process is increased (the compression ratio can reach more than 95 percent), the production process is simplified, and the production efficiency is improved.
Thirdly, the compression angle of the wire drawing die is changed from 11-12 degrees of the high-carbon steel to 13-14 degrees, and the concentration of the lubricant is reduced to about 2-3 percent from 5 percent when the high-carbon steel is drawn.
3. Compared with high-carbon steel, the low-carbon steel has higher toughness on the premise of the same strength. Therefore, compared with high-carbon steel, the steel has the following characteristics:
the total drawing compression ratio can be increased from 92% to more than 95%;
secondly, the loss rate of a zinc layer during steel wire drawing can be reduced from the original 30 percent to less than 10 percent;
the drawing force and the energy consumption during drawing can be reduced, for example, the power consumption can be reduced by about 16 percent during wet drawing, and the electric energy can be saved by about 32 yuan per ton of steel wire;
fourthly, the loss of the wire drawing die can be reduced, and the wire drawing die is reduced to 5 wires per ton from 15 wires per ton in wet drawing according to the daily maintenance requirement of the wire drawing die;
the broken wire rate during wire drawing can be obviously reduced from 14 times per ton to 5 times per ton, the yield of the produced material is improved, and the labor productivity is improved.
The invention has the advantages of less production procedures, low energy consumption, low wire breakage rate and high labor productivity.
The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.
Claims (4)
1. A low-carbon steel strand drawing production process is characterized by comprising the following steps: the method comprises the following steps:
step one, surface treatment: placing a low-carbon steel wire on a pay-off rack, removing hot rolling oxide skin by mechanical dephosphorization equipment, cleaning, then respectively placing the low-carbon steel wire into a cleaning tank for cleaning, pickling in a pickling tank, then entering the phosphating equipment for phosphating, and finally entering drying equipment for drying to obtain a pretreated wire;
step two, drawing: placing the pretreated wire rod obtained in the step one on a drawing machine, carrying out multi-pass drawing to obtain a semi-finished wire rod, and taking up the wire rod by using a spool;
step three, water bath heat treatment and galvanization: placing the semi-finished wire obtained in the step two on a pay-off rack, and heating the wire through a four-section type heat treatment furnace at the heating temperature of: 860-920 ℃, then entering a water tank for water quenching and drying, wherein the temperature of a water bath agent is 85 ℃, the concentration is 5%, finally performing electroplating galvanization, the galvanizing solution is ZnSO 4.7H2O, the concentration is 350-500g/L, the pH value is 1.5-3.0, the electroplating current is 650A/MB, the take-up speed is 50 m/min, cooling to obtain a semi-finished wire, and taking up the wire;
step four, wet drawing: placing the semi-finished wire rod obtained in the step three on a drawing machine, carrying out multi-pass drawing operation, wherein the compression angle of a wire drawing die in each pass is 13-14 degrees, the lubricant is a drawing special lubricant, the concentration is 2% -3%, the finished wire rod is obtained, and taking up by using a spool;
step five, stranding into ropes: and D, putting the finished wire rods obtained in the step four on a stranding machine for stranding and rope combining to finally obtain the finished steel stranded wire.
2. The low-carbon steel strand drawing production process of claim 1, wherein the drawing production process comprises the following steps: the heating temperature of the four-section heat treatment furnace in the third step is 860 ℃, 880 ℃, 900 ℃ and 920 ℃.
3. The low-carbon steel strand drawing production process of claim 1, wherein the drawing production process comprises the following steps: in the fourth step, the drawing deformation of each pass is 10-30% in the multi-pass drawing operation.
4. The low-carbon steel strand drawing production process of claim 1, wherein the drawing production process comprises the following steps: the low-carbon steel wire rod is made of 20 steel or 25 steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910765645.7A CN112387804A (en) | 2019-08-19 | 2019-08-19 | Low-carbon steel strand drawing production process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910765645.7A CN112387804A (en) | 2019-08-19 | 2019-08-19 | Low-carbon steel strand drawing production process |
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| CN112387804A true CN112387804A (en) | 2021-02-23 |
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| CN201910765645.7A Pending CN112387804A (en) | 2019-08-19 | 2019-08-19 | Low-carbon steel strand drawing production process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116460164A (en) * | 2023-05-06 | 2023-07-21 | 无锡市时捷钢绳有限公司 | Low-loss long-service-life steel wire rope and processing technology thereof |
| CN116460164B (en) * | 2023-05-06 | 2024-04-19 | 无锡市时捷钢绳有限公司 | Low-loss long-service-life steel wire rope and processing technology thereof |
-
2019
- 2019-08-19 CN CN201910765645.7A patent/CN112387804A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116460164A (en) * | 2023-05-06 | 2023-07-21 | 无锡市时捷钢绳有限公司 | Low-loss long-service-life steel wire rope and processing technology thereof |
| CN116460164B (en) * | 2023-05-06 | 2024-04-19 | 无锡市时捷钢绳有限公司 | Low-loss long-service-life steel wire rope and processing technology thereof |
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Application publication date: 20210223 |