CN113481359B - High-toughness anchor chain wire drawing and tempering processing technology - Google Patents
High-toughness anchor chain wire drawing and tempering processing technology Download PDFInfo
- Publication number
- CN113481359B CN113481359B CN202110777731.7A CN202110777731A CN113481359B CN 113481359 B CN113481359 B CN 113481359B CN 202110777731 A CN202110777731 A CN 202110777731A CN 113481359 B CN113481359 B CN 113481359B
- Authority
- CN
- China
- Prior art keywords
- tempering
- wire drawing
- steel bar
- percent
- chain
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- C21D9/0087—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for chains, for chain links
-
- 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
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/008—Heat treatment of ferrous alloys containing Si
-
- 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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
-
- 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
- C21D9/0075—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rods of limited length
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/24—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing hexavalent chromium compounds
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
The invention discloses a high-toughness anchor chain wire drawing and tempering processing technology, which comprises the following processing technology steps: conveying alloy steel bars containing carbon, silicon, manganese, phosphorus, sulfur, copper, nickel, chromium, molybdenum and aluminum elements into a pickling tank for pickling treatment; and drying the alloy steel bar after acid cleaning, and then carrying out wire drawing and tempering treatment by using a wire drawing machine and a tempering furnace. Compared with other treatment processes, the treated alloy steel bar is more straight in radial direction through twice wire drawing treatment of acid washing and twice tempering of the original alloy steel bar, and the molecules in the alloy steel bar are uniform, so that the tensile force and the extension force of the material are effectively enhanced, the tensile force effect of the anchor chain in the actual use process is increased, the formed anchor ring is passivated and then is subjected to twice paint dipping and drying treatment, a compact anticorrosive coating is attached to the surface of the anchor ring, the anticorrosive effect of the anchor chain in use is increased, and the use effect and the service life of the anchor chain are improved.
Description
Technical Field
The invention relates to a processing technology of an anchor chain, in particular to a wire drawing and tempering processing technology of a high-toughness anchor chain.
Background
The anchor chain, which is a special chain for connecting the anchor and the ship body and transferring the holding power of the anchor, is usually composed of an anchor end chain link, a middle chain link, a tail end chain link and the like, and the anchor chain mainly has the following functions: connecting the anchor with the ship, and transmitting the holding force of the anchor to the ship body; when anchoring, the thrown anchor chain has certain weight and can play a certain buffering role on external forces such as wind current and the like borne by the ship in water; the acting force of the anchor chain at the horizontal water bottom part on the anchor is kept horizontal, which is beneficial to the reliable bottom grabbing of the anchor. Meanwhile, the part of the anchor chain can provide a part of anchoring force due to the retardation of soil, and the anchor chain needs to bear huge pulling force in the use process, so that the anti-pulling effect and the toughness of the anchor chain can be improved only by special treatment in the production process.
The existing anchor chain production process has the following defects: 1. the existing anchor chain production process only has one single process for wire drawing and tempering treatment of the anchor chain, so that the extension force and toughness effect of the anchor chain are reduced, the bearing capacity of the anchor chain is greatly reduced, and the using effect of the anchor chain in the actual using process is reduced. 2. After the existing anchor chain is processed and formed, only simple anticorrosion treatment is carried out on the surface of the anchor chain, and the anchor chain is extremely easy to rust and corrode and break in the actual use process, so that the anchor chain cannot be used continuously.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a high-toughness anchor chain wire drawing and tempering processing technology which comprises the steps of carrying out wire drawing twice and tempering twice on the original alloy steel bar so as to enable the alloy steel bar to be more radially straightened and enable the molecules in the alloy steel bar to be uniform, so that the tension and the extension force of the material are effectively enhanced, and carrying out tempering again after the alloy bar is pressed and bent into an anchor ring, so that the hardness, the tension strength and the toughness of the anchor chain are further improved, the bearing capacity of the material of the anchor chain produced subsequently is greatly improved, and the bearing effect of the anchor chain in the actual use process is also more obvious; after the anchor ring is formed and burrs on the surface are removed, tempering treatment is immediately carried out again, the surface extension force and toughness of the formed anchor ring are further improved, then the baking paint is soaked after residual dust and rusty spots on the surface are removed through soaking type passivation treatment, and the baking paint is soaked for the second time after the primary soaking and drying, so that the baking paint forms a protective thickness on the surface of the anchor ring, the corrosion-resistant effect is improved, and the using effect and the service life in the actual using process are increased.
In order to achieve the purpose, the invention provides the following technical scheme: a high-toughness anchor chain wire drawing and tempering processing technology comprises the following processing technology steps:
step (A), conveying alloy steel bars containing carbon, silicon, manganese, phosphorus, sulfur, copper, nickel, chromium, molybdenum and aluminum elements into a pickling tank for pickling treatment;
step (B), drying the alloy steel bar after acid washing, and then performing wire drawing and tempering treatment in a wire drawing machine and a tempering furnace, wherein after the wire drawing and tempering treatment is performed twice, the treated steel bar is more straight in radial direction, and the molecules in the steel bar are uniform, so that the tensile force and the extension force of the material are effectively enhanced;
step (C), rolling the steel bar material subjected to wire drawing and tempering into a coil, conveying the coil into an automatic chain welding machine, binding and pressing a groove on the steel bar material, cutting the steel bar material according to the size, bending the steel bar material into a chain ring shape, shaping and welding, and removing burrs after welding;
step (D), putting the chain ring subjected to deburring into the quenching furnace again for tempering treatment to ensure the hardness, tensile strength and toughness of the surface of the chain ring;
adding marks on the surface of the tempered chain ring, and performing roller burnishing treatment on the surface of the chain ring by using polishing equipment until the surface is luminous and black;
step (F), performing roller burnishing, then performing paint baking, and then performing passivation, namely firstly, sending the anchor ring into passivation solution for soaking, adding an adjusting solution in the soaking process to adjust the pH value of the passivation solution so as to enable the passivation solution to fully react, washing the passivation solution by using clear water after soaking is finished, washing the passivation solution cleanly, drying and airing the passivation solution to remove dust and rust spots on the surface of the chain ring, and then soaking the chain ring into the baking paint;
after being passivated, the spiral package can be carried out by using a wooden box or an iron barrel;
in the step (B), the temperature is raised to 650-680 ℃ through primary tempering, the temperature is kept for 40-60 minutes, the first wire drawing process is carried out for improving the toughness effect to 90-92%, the temperature is raised to 700-750 ℃ through secondary tempering, the temperature is kept for 140 minutes, the second wire drawing process is carried out for improving the toughness effect to 8-10%, the temperature is reduced to 180-200 ℃ and the wire is taken out through air cooling, and the wire drawing is carried out twice through secondary tempering to increase the elongation and toughness of the material;
in the step (D), tempering the surface of the chain ring, heating to 650-700 ℃, keeping the temperature for 40-50 minutes after the chain ring is bright cherry red and deep orange, and discharging from the furnace by air cooling, so that the surface of the formed anchor ring is quickly heated, and the extension force is improved;
in the step (F), the passivation solution is a mixed solution of 400-600g/L nitric acid and 30-45g/L sodium dichromate, and a passivation film is formed on the surface of the workpiece to prevent equipment from being corroded;
in the step (F), immersing the tempered and dried anchor ring into a passivation solution for 1-2 min, and adding 100-120 parts of nitric acid solution during the immersion, wherein the pH value of the solution is 3-4; the sufficient soaking time ensures that the passivation solution is fully reflected, and the nitric acid solution is added to adjust the pH value to the optimal reaction value.
In the step (a), the alloy steel bar stock comprises the following elements by mass percent: 0.17 to 0.23 percent of carbon, 0.15 to 0.35 percent of silicon, 0.7 to 0.9 percent of manganese, 0.1 to 0.25 percent of phosphorus, 0.1 to 0.25 percent of sulfur, 0.1 to 0.3 percent of copper, 0.4 to 0.7 percent of nickel, 0.4 to 0.7 percent of chromium, 0.15 to 0.3 percent of molybdenum, 0.2 to 0.5 percent of aluminum and the balance of iron.
In the step (A), the pickling solution is 6% -8% hydrochloric acid solution, the temperature of pickling equipment is 50-70 ℃, the pickling time is 0.5-1.5 h, the subsequent operation can be performed only after the surface of the alloy material is completely dried after the pickling is finished, the pickling process is more active at a certain temperature, the oxide is corroded by using dilute acid, the metal matrix can be guaranteed not to be excessively influenced, and the pickling process can guarantee that the pickling solution is fully contacted with the alloy steel bar after a proper time.
In the step (F), the passivated chain ring is immersed into the baking paint twice, and the thickness of the baking paint adhesion is 0.5mm-0.7mm, so as to form a compact anti-corrosion paint layer.
The invention has the technical effects and advantages that:
firstly, the acid pickling solution of the alloy steel bar raw material of the anchor chain is 6-8% hydrochloric acid solution, the temperature of the acid pickling equipment is 50-70 ℃, the acid pickling time is 0.5-1.5 h, the acid pickling reaction is more active at a certain temperature, the oxide is corroded away by using dilute acid, the metal matrix is not excessively influenced, meanwhile, the acid pickling solution is ensured to fully react with the alloy steel bar through proper time, the alloy steel bar raw material is subjected to tempering and wire drawing treatment after being heated to 650-680 ℃ for the first time, the alloy steel bar is subjected to heat preservation for 40-60 minutes, the temperature is heated to 700-750 ℃ for the second time, the tempering and wire drawing treatment is carried out again after the temperature is preserved for 110-140 minutes, and the treatment process of twice tempering and twice wire drawing is carried out, so that the bar is more curved in the radial direction, and the molecules in the alloy steel bar are uniform, so that the tensile force and the extension force of the material are effectively enhanced, the temperature of the anchor ring which is bent, shaped and welded by the automatic chain welding machine is raised to 650-700 ℃ again, and the anchor ring is tempered after being bright cherry red-dark orange, the temperature is kept for 40-50 minutes, the extension force on the surface of the anchor ring is increased, and the using effect is improved. Secondly, adding marks on the surface of the anchor ring after tempering to meet the requirements of customers, passivating by using a mixed solution of 400-fold 600g/L nitric acid and 30-45g/L sodium dichromate, and adding 100-fold 120 parts of nitric acid solution, wherein the pH value of the solution is 3-4; the sufficient soaking time guarantees that the passivation solution fully reflects, adds the nitric acid solution and adjusts the pH value to the optimum reaction value, makes the surface of anchor ring cleaner, makes anticorrosive paint adhere to more easily, through soaking the baking finish twice, forms compact anticorrosive coating, has increased anti-corrosion effect, has improved the effect and the life in the in-service use process.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A high-toughness anchor chain wire drawing and tempering processing technology comprises the following processing technology steps:
step (A), conveying alloy steel bars containing carbon, silicon, manganese, phosphorus, sulfur, copper, nickel, chromium, molybdenum and aluminum elements into a pickling tank for pickling treatment;
step (B), drying the alloy steel bar after acid washing, and then performing wire drawing and tempering treatment in a wire drawing machine and a tempering furnace, wherein after the wire drawing and tempering treatment is performed twice, the treated steel bar is more straight in radial direction, and the molecules in the steel bar are uniform, so that the tensile force and the extension force of the material are effectively enhanced;
step (C), rolling the steel bar material subjected to wire drawing and tempering into a coil, conveying the coil into an automatic chain welding machine, binding and pressing a groove on the steel bar material, cutting the steel bar material according to the size, bending the steel bar material into a chain ring shape, shaping and welding, and removing burrs after welding;
step (D), putting the chain ring subjected to deburring into a quenching furnace again for tempering treatment to ensure the hardness, tensile strength and toughness of the surface of the chain ring;
adding marks on the surface of the tempered chain ring, and performing roller burnishing treatment on the surface of the chain ring by using polishing equipment until the surface is luminous and black;
step (F), performing paint baking after the roller burnishing treatment, and performing passivation treatment, namely firstly, sending the anchor ring into passivation solution to be soaked, adding an adjusting solution to adjust the pH value of the passivation solution in the soaking process so as to enable the passivation solution to fully react, washing the passivation solution by using clear water after the soaking is finished, washing the passivation solution cleanly, drying and airing the passivation solution to remove dust and rust spots on the surface of the chain ring, and then soaking the chain ring into the paint baking;
after being passivated, the spiral package can be carried out by using a wooden box or an iron barrel;
in the step (B), the temperature is raised to 650-680 ℃ in the primary tempering, the temperature is kept for 40-60 minutes, the first wire drawing process is carried out for improving the toughness effect to 90-92%, the temperature is raised to 700-750 ℃ in the secondary tempering, the temperature is kept for 140 minutes, the second wire drawing process is carried out for improving the toughness effect to 8-10%, the temperature is reduced to 180-200 ℃ and the wire drawing is carried out twice in the secondary tempering for increasing the elongation and the toughness of the material;
in the step (D), tempering the surface of the chain ring, heating to 650-700 ℃, keeping the temperature for 40-50 minutes after the chain ring is bright cherry red-dark orange, and discharging from the furnace by air cooling to quickly heat the surface of the formed anchor ring and improve the extension force;
in the step (F), the passivation solution is a mixed solution of 400-600g/L nitric acid and 30-45g/L sodium dichromate, and a passivation film is formed on the surface of the workpiece to prevent equipment from rusting;
in the step (F), the tempered and dried anchor ring needs to be immersed in the passivation solution for 1min-2min, and in the immersion process, 120 parts of 100-4 parts of nitric acid solution is added, and the pH value of the solution is 3-4; the sufficient soaking time ensures that the passivation solution is fully reflected, and the nitric acid solution is added to adjust the pH value to the optimal reaction value.
Preferably, in the step (a), the alloy steel bar stock comprises the following elements by mass percent: 0.17 to 0.23 percent of carbon, 0.15 to 0.35 percent of silicon, 0.7 to 0.9 percent of manganese, 0.1 to 0.25 percent of phosphorus, 0.1 to 0.25 percent of sulfur, 0.1 to 0.3 percent of copper, 0.4 to 0.7 percent of nickel, 0.4 to 0.7 percent of chromium, 0.15 to 0.3 percent of molybdenum, 0.2 to 0.5 percent of aluminum and the balance of iron.
Preferably, in the step (A), the pickling solution is 6% -8% hydrochloric acid solution, the temperature of pickling equipment is 50-70 ℃, the pickling time is 0.5-1.5 h, the subsequent operation can be carried out only after the surface of the alloy material is completely dried after the pickling is finished, the pickling process is more active at a certain temperature, the oxide is corroded by using dilute acid, the metal matrix can be guaranteed not to be excessively influenced, and the pickling process can guarantee that the pickling solution is fully contacted with the alloy steel bar after a proper time.
Preferably, in the step (F), the passivated chain ring is immersed into baking paint twice, and the thickness of the baking paint adhesion is 0.5mm-0.7mm, so as to form a compact anti-corrosion paint layer.
In summary, the following steps: compared with other treatment processes, the high-toughness anchor chain wire drawing and tempering processing process provided by the invention has the following advantages: firstly, acid pickling of an alloy steel bar raw material of an anchor chain is performed by 6-8% hydrochloric acid solution, the temperature of acid pickling equipment is 50-70 ℃, the acid pickling time is 0.5-1.5 h, acid reaction is more active at a certain temperature, the oxide is corroded by using dilute acid, the metal matrix is not excessively influenced, the acid pickling is performed for a proper time to ensure that the acid pickling solution and the alloy steel bar are fully reacted, the alloy steel bar raw material is subjected to tempering and wire drawing treatment by heating to 650-680 ℃ for the first time, the alloy steel bar is subjected to heat preservation for 40-60 minutes, the temperature is increased to 700-750 ℃ for the second time, the alloy steel bar is subjected to heat preservation for 110-140 minutes, the wire drawing treatment is performed again, and the treatment process of twice tempering and twice wire drawing is performed to ensure that the alloy steel bar is more radially straightened, and the molecules in the alloy steel bar are uniform, so that the tensile force and the extension force of the material are effectively enhanced, the temperature of the anchor ring which is bent, shaped and welded by the automatic chain welding machine is raised to 650-700 ℃ again, and the anchor ring is tempered after being bright cherry red-dark orange, the temperature is kept for 40-50 minutes, the extension force on the surface of the anchor ring is increased, and the using effect is improved. Secondly, adding marks on the surface of the anchor ring after tempering to meet the requirements of customers, passivating by using a mixed solution of 400-fold 600g/L nitric acid and 30-45g/L sodium dichromate, and adding 100-fold 120 parts of nitric acid solution, wherein the pH value of the solution is 3-4; the sufficient soaking time guarantees that the passivation solution fully reflects, adds the nitric acid solution and adjusts the pH value to the optimum reaction value, makes the surface of anchor ring cleaner, makes anticorrosive paint adhere to more easily, through soaking the baking finish twice, forms compact anticorrosive coating, has increased anti-corrosion effect, has improved the effect and the life in the in-service use process.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (4)
1. A high-toughness anchor chain wire drawing and tempering processing technology is characterized by comprising the following processing technology steps:
step (A), conveying alloy steel bars containing carbon, silicon, manganese, phosphorus, sulfur, copper, nickel, chromium, molybdenum and aluminum elements into a pickling tank for pickling treatment;
step (B), drying the alloy steel bar after acid cleaning, and then carrying out wire drawing and tempering treatment by using a wire drawing machine and a tempering furnace;
step (C), rolling the steel bar material subjected to wire drawing and tempering into a coil, conveying the coil into an automatic chain welding machine, binding and pressing a groove on the steel bar material, cutting the steel bar material according to the size, bending the steel bar material into a chain ring shape, shaping and welding, and removing burrs after welding;
step (D), putting the chain ring subjected to deburring into the quenching furnace again for tempering treatment;
adding marks on the surface of the tempered chain ring, and performing roller burnishing treatment on the surface of the chain ring by using polishing equipment until the surface is luminous and black;
step (F), performing paint baking after the roller burnishing treatment, and performing passivation treatment, namely firstly, sending the anchor ring into passivation solution to be soaked, adding an adjusting solution to adjust the pH value of the passivation solution in the soaking process so as to enable the passivation solution to fully react, washing the passivation solution by using clear water after the soaking is finished, washing the passivation solution cleanly, drying and airing the passivation solution to remove dust and rust spots on the surface of the chain ring, and then soaking the chain ring into the paint baking;
after being passivated, the spiral package can be carried out by using a wooden box or an iron barrel;
in the step (B), the temperature is raised to 650-680 ℃ by primary tempering, the temperature is kept for 40-60 minutes, the first wire drawing process is carried out for improving the toughness effect to 90-92%, the temperature is raised to 700-750 ℃ by secondary tempering, the temperature is kept for 140 minutes, the second wire drawing process is carried out for improving the toughness effect to 8-10%, and the temperature is reduced to 180-200 ℃ for air cooling and discharging;
in the step (D), tempering the surface of the chain ring, heating to 650-700 ℃, keeping the temperature for 40-50 minutes after the chain ring is bright cherry red-dark orange, and taking the chain ring out of the furnace through air cooling;
in the step (F), the passivation solution is a mixed solution of 400-600g/L nitric acid and 30-45g/L sodium dichromate;
in the step (F), the tempered and dried anchor ring needs to be immersed in the passivation solution for 1min-2min, and in the immersion process, 120 parts of 100-4 parts of nitric acid solution is added, and the pH value of the solution is 3-4.
2. The high toughness anchor chain wire drawing and tempering processing technology according to claim 1, wherein in said step (a), the alloy steel bar stock comprises the following elements by mass percent: 0.17 to 0.23 percent of carbon, 0.15 to 0.35 percent of silicon, 0.7 to 0.9 percent of manganese, 0.1 to 0.25 percent of phosphorus, 0.1 to 0.25 percent of sulfur, 0.1 to 0.3 percent of copper, 0.4 to 0.7 percent of nickel, 0.4 to 0.7 percent of chromium, 0.15 to 0.3 percent of molybdenum, 0.2 to 0.5 percent of aluminum and the balance of iron.
3. The high toughness anchor chain wire drawing and tempering processing technology according to claim 1, wherein in said step (A), the pickling solution is 6% -8% hydrochloric acid solution, the temperature of the pickling equipment is 50-70 ℃, and the pickling time is 0.5-1.5 h.
4. The high toughness anchor chain drawing and tempering process according to claim 1, wherein said step (F) requires immersing said passivated chain ring into two baking finishes, and said baking finishes are attached to a thickness of 0.5mm to 0.7 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110777731.7A CN113481359B (en) | 2021-07-09 | 2021-07-09 | High-toughness anchor chain wire drawing and tempering processing technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110777731.7A CN113481359B (en) | 2021-07-09 | 2021-07-09 | High-toughness anchor chain wire drawing and tempering processing technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113481359A CN113481359A (en) | 2021-10-08 |
| CN113481359B true CN113481359B (en) | 2022-09-20 |
Family
ID=77938358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110777731.7A Active CN113481359B (en) | 2021-07-09 | 2021-07-09 | High-toughness anchor chain wire drawing and tempering processing technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113481359B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000192300A (en) * | 1998-12-22 | 2000-07-11 | Daido Steel Co Ltd | Acid pickling method of iron-based metal wire rod |
| WO2005024072A1 (en) * | 2003-09-09 | 2005-03-17 | Pewag Austria Gmbh | Manufactured steel chain blank, use thereof, method for producing a chain and chain produced by said method |
| CN103757551A (en) * | 2013-12-12 | 2014-04-30 | 嵊州市特种链轮有限公司 | Mechanically actuated chain wheel material, and manufacturing method thereof |
| CN108220541A (en) * | 2018-01-17 | 2018-06-29 | 杭州自强链传动有限公司 | A kind of heat treatment method of medium carbon alloy steel chain hinge pin |
| CN109234645A (en) * | 2018-09-30 | 2019-01-18 | 镇江宝海船舶五金有限公司 | A kind of composite material and preparation method thereof applied in marine anchor chain |
| CN113073258A (en) * | 2021-03-12 | 2021-07-06 | 中天钢铁集团有限公司 | High-temperature-resistant quenching chain steel wire rod suitable for continuous pass type induction heating furnace and manufacturing method |
-
2021
- 2021-07-09 CN CN202110777731.7A patent/CN113481359B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000192300A (en) * | 1998-12-22 | 2000-07-11 | Daido Steel Co Ltd | Acid pickling method of iron-based metal wire rod |
| WO2005024072A1 (en) * | 2003-09-09 | 2005-03-17 | Pewag Austria Gmbh | Manufactured steel chain blank, use thereof, method for producing a chain and chain produced by said method |
| CN103757551A (en) * | 2013-12-12 | 2014-04-30 | 嵊州市特种链轮有限公司 | Mechanically actuated chain wheel material, and manufacturing method thereof |
| CN108220541A (en) * | 2018-01-17 | 2018-06-29 | 杭州自强链传动有限公司 | A kind of heat treatment method of medium carbon alloy steel chain hinge pin |
| CN109234645A (en) * | 2018-09-30 | 2019-01-18 | 镇江宝海船舶五金有限公司 | A kind of composite material and preparation method thereof applied in marine anchor chain |
| CN113073258A (en) * | 2021-03-12 | 2021-07-06 | 中天钢铁集团有限公司 | High-temperature-resistant quenching chain steel wire rod suitable for continuous pass type induction heating furnace and manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113481359A (en) | 2021-10-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2007277652A (en) | Manufacturing method of galvannealed sheet steel having good workability, powdering resistance and sliding property | |
| CN109023152A (en) | A kind of manufacturing method of high-strength anti-fatigue bolt alloy material and bolt | |
| CN113481359B (en) | High-toughness anchor chain wire drawing and tempering processing technology | |
| CN111434403B (en) | Method and device for manufacturing corrosion-resistant hot stamping part | |
| CN110863157A (en) | Corrosion-resistant machining forming process for stainless steel screw | |
| CN114015952A (en) | High-toughness corrosion-resistant stainless steel wire and preparation method thereof | |
| CN111876677B (en) | Forming process of hexagonal alloy tool steel S2 | |
| CN114214544A (en) | Preparation method of multifunctional alloy wire pressing mechanism | |
| US2368955A (en) | Treatment of manganese steel | |
| CN113560340A (en) | Method for improving surface color difference of Gipa-grade high-strength steel | |
| KR100676523B1 (en) | Preprocessing method for hot-dip aluminizing | |
| JP3033842B2 (en) | Manufacturing method of wire for cold working and equipment for manufacturing wire for cold working | |
| CN102912102A (en) | Manufacturing method of GCr15 coiled cold-drawn material for cold extrusion of metal structural part | |
| TWI730752B (en) | Processing method of steel wire for forming screw | |
| CN116005164A (en) | Surface treatment method for iron-nickel-based heat-resistant alloy hot rolled coil | |
| JPH08155572A (en) | Production of corrosion proof and decarburizing proof spring | |
| JP4319808B2 (en) | Manufacturing method of steel wire for valve spring | |
| CN111378905B (en) | Preparation method of fastener wire of baby carrier | |
| CN114734206A (en) | Machining process of hot-rolling spring mandrel | |
| CN116334356A (en) | Production process of gearbox shell connection check bolt | |
| JP4418072B2 (en) | Manufacturing method of high tension hot-dip aluminized steel sheet | |
| CN115522021A (en) | Heat treatment method for improving hydrogen embrittlement resistance of coating hot forming steel | |
| CN111378825A (en) | Carburizing and quenching process for low-carbon steel pin shaft | |
| CN115976320A (en) | Surface treatment method for high-carbon martensitic stainless steel wire rod | |
| JP2002155396A (en) | Nickel-plated oil-tempered wire having excellent corrosion resistance and formability and wire for oil tempering, as well as method of manufacturing these wires |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |