CN115198180B - Production method of socket wrench refined wire rod - Google Patents
Production method of socket wrench refined wire rod Download PDFInfo
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- CN115198180B CN115198180B CN202210735245.3A CN202210735245A CN115198180B CN 115198180 B CN115198180 B CN 115198180B CN 202210735245 A CN202210735245 A CN 202210735245A CN 115198180 B CN115198180 B CN 115198180B
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- 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
-
- 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
- B21C37/045—Manufacture of wire or bars with particular section or properties
-
- 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
- C21D1/26—Methods of annealing
-
- 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
- C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
- C21D8/065—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires of ferrous alloys
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
-
- 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
- C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
-
- 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
- C23C22/07—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 phosphates
- C23C22/08—Orthophosphates
- C23C22/12—Orthophosphates containing zinc cations
-
- 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
- C23C22/73—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 characterised by the process
-
- 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
Abstract
A method for producing refined wires by using a socket wrench belongs to the technical field of steel wire production. The method comprises the working procedures of acid pickling phosphorization, rough drawing, annealing, yellowing, secondary acid pickling phosphorization and fine drawing; the pickling and phosphating step, wherein the Wittig structure of the hot rolled wire rod is 0 grade or 1 grade, and the diameter is 38-40 mm; and a yellowing process, wherein the annealed wire is soaked in 8-16% hydrochloric acid for 5-10 min, and then is placed outdoors for 24-48 h. The diameter of the refined wire rod of the socket wrench produced by the invention is 35.10-35.50 mm, the hardness is less than or equal to 90HRB, the tensile strength is 520-550 Mpa, the spheroidization grade is 4-grade and 5-grade, and the quality of the phosphating film is 10-12g/m 2 Bad phenomena such as abnormal sound, scratch and the like of the fine wire in the cold heading process are eliminated.
Description
Technical Field
The invention belongs to the technical field of steel wire production, and particularly relates to a production method of a refined wire by a socket wrench.
Background
Socket wrenches are usually produced by cold heading, and the raw material used is tool steel refined wire. The refined wire used for producing the high-end socket wrench is 50BV30, because 50BV30 contains the boron element with wear resistance and corrosion resistance, and has certain toughness. At present, most of refined wires have the problems of napping scratch, large mould loss and the like in the process of producing socket wrenches, and particularly, the finished wires with the specification of more than 35.00mm have low yield and high production cost. This is because a finishing line exceeding 35.00mm is produced using 36.00mm or more of the raw material, because the specification is large and limited by the production capacity of the existing wire drawing machine, the rough draw reduction ratio is generally small, and the widmannstatten tissue present in the raw material is difficult to eliminate during the production of the finishing line. Finally, the spheroidization rate of the produced refined wire rod is only 3-4 grades, and the refined wire rod generates abnormal sound during cold heading to damage a die; in addition, the extrusion force that the large-size fine wire receives in the cold heading process of forming the part is bigger, and the quality requirement on fine wire phosphating is higher. The quality of the phosphating film of the fine line produced by the prior art is only 6-10g/m 2 The fine wire is easy to scratch in the process of cold heading into a part.
Disclosure of Invention
In order to solve the technical problems, the invention provides a production method of a refined wire rod of a socket wrench, which adopts the following technical scheme:
a production method of a refined wire rod of a socket wrench comprises the working procedures of acid pickling phosphorization, rough drawing, annealing, yellowing, secondary acid pickling phosphorization and fine drawing;
the pickling and phosphating process uses a Wistatten structure of a hot rolled wire rod of grade 0 or grade 1, and the diameter is 38-40 mm;
the yellowing process comprises the steps of soaking annealed wires in 8-16% hydrochloric acid for 5-10 min, and then placing the wires outdoors for 24-48 h;
the diameter of the refined wire rod of the socket wrench is 35.10-35.50 mm.
The hot rolled wire comprises the following chemical components in percentage by mass: 0.27 to 0.32 percent of C, 0.04 to 0.09 percent of Si, 0.70 to 1.00 percent of Mn, less than or equal to 0.035 percent of P, less than or equal to 0.035 percent of S, 0.30 to 0.50 percent of Cr, 0.10 to 0.15 percent of V, more than or equal to 0.0006 percent of B, and the balance of Fe and unavoidable impurities.
The pickling and phosphating process comprises the following specific steps: soaking the wire in hydrochloric acid with the mass fraction of 16-24% and the temperature of 10-40 ℃ for 20-30 min, then flushing the wire by a high-pressure water gun, and then sequentially soaking the wire in a water tank, a surface regulating tank, a phosphating tank, a neutralizing tank and a saponification tank.
The pickling phosphating procedure is carried out, the high-pressure water gun is used for flushing for 1-2 min, and the pressure of the high-pressure water gun is 0.2-0.5 Mpa; soaking the wire in a water tank for 1-2 min, soaking in a surface regulating tank for 1-2 min, soaking in a phosphating tank for 10-15 min, wherein the temperature of the phosphating tank is 50-60 ℃, and the phosphating agent is zinc phosphating agent; the wire rod after phosphating is soaked in a neutralization tank for 1-3 min, and is soaked in a saponification tank for 2-5 min, and the temperature of the saponification agent is 60-70 ℃.
The rough drawing and drawing process is that the wire rod is drawn to 35.40-35.90 mm, and the rough drawing and reducing rate is 10.0-20%.
The annealing procedure is to heat up the wire rod to 750-760 ℃ at a speed of 100-150 ℃/h after the wire rod is put into a roller hearth STC annealing furnace, and keep the temperature for 4-5 h; then cooling to 710-730 ℃ at a speed of 16-20 ℃/h, and preserving heat for 3-5 h; cooling to 560-600 ℃ at the speed of 8-15 ℃/h, then stopping the furnace to discharge the wire from the furnace, and naturally cooling to room temperature in the air.
The secondary pickling and phosphating process comprises the steps of soaking the wire in hydrochloric acid with the mass fraction of 8-16% and the temperature of 10-40 ℃ for 5-10 min, flushing the wire by a high-pressure water gun, and then sequentially soaking the wire in a water tank, a surface regulating tank, a phosphating tank, a neutralizing tank and a saponification tank.
The secondary pickling phosphating procedure is carried out, the high-pressure water gun is used for flushing for 1-2 min, and the pressure of the high-pressure water gun is 0.2-0.5 Mpa; soaking the wire in a water tank for 1-2 min, soaking in a surface regulating tank for 1-2 min, soaking in a phosphating tank for 10-15 min, wherein the temperature of the phosphating tank is 50-60 ℃, and the phosphating agent is zinc phosphating agent; the wire rod after phosphating is soaked in a neutralization tank for 1-3 min, and is soaked in a saponification tank for 2-5 min, and the temperature of the saponification agent is 60-70 ℃.
And in the fine drawing step, the wire rod is drawn to 35.10-35.50 mm, and the fine drawing reduction ratio is 1.0-3%.
The hardness of the refined wire rod of the socket wrench produced by the method is less than or equal to 90HRB, the tensile strength is 520-550 Mpa, the spheroidization grade is 4-grade and 5-grade, and the quality of the phosphating film is 10-12g/m 2 。
The invention provides a foundation for producing high-quality fine lines by strictly controlling the metallographic microstructure quality of the hot-rolled raw materials; aiming at the problem of low quality of the phosphating film caused by residues on the surface of the pickling treated product, a yellowing treatment process is developed to ensure that the quality of the phosphating film of the fine line reaches 10-12g/m 2 . Through the measures, the adverse phenomena of abnormal sound, scratch and the like of the fine wire in the cold heading process are eliminated.
The hardness of the refined wire rod of the socket wrench produced by the invention is less than or equal to 90HRB, the tensile strength is 520-550 Mpa, and the spheroidization grade is 4 grade and 5 grade.
Drawings
FIG. 1 is a view showing a metallographic structure of a hot rolled wire stock according to the present invention;
FIG. 2 is a wire after the yellowing treatment of the present invention;
FIG. 3 is a metallographic view (500 times) of a refined wire rod of the socket wrench produced in example 1;
FIG. 4 is a metallographic view (500 times) of a refined wire rod of a socket wrench produced in example 2;
fig. 5 is a metallographic structure diagram (500 times) of a refined wire rod of a socket wrench produced in example 3.
Detailed Description
Example 1
The Wittig structure of the hot rolled wire rod used in this example should be grade 0, diameter 38.00mm, and its chemical composition and mass percentage are shown in Table 1.
The production method of the refined wire rod of the socket wrench comprises the procedures of acid pickling phosphating, rough drawing, annealing, yellowing, secondary acid pickling phosphating and refined drawing, and the specific process steps are as follows:
(1) Acid pickling and phosphating: soaking the wire rod in 18 mass percent hydrochloric acid at 20 ℃ for 20min, and then flushing the wire rod for 1min by using a high-pressure water gun, wherein the pressure of the high-pressure water gun is 0.3Mpa; soaking in a water tank for 1min to rinse off residual hydrochloric acid on the surface of the wire rod, then soaking in a surface regulating tank for 1min, and soaking in a phosphating tank for 10min, wherein the temperature of the phosphating tank is 50 ℃, and the phosphating agent is zinc phosphating agent; the wire rod after phosphating is soaked in a neutralization tank for 1min to reduce the acidity of the surface of the wire rod, and finally soaked in a saponification tank for 2min, wherein the temperature of a saponification agent is 60 ℃.
(2) Rough drawing and drawing process: and drawing the wire rod subjected to acid pickling and phosphating to 35.90mm by using a wire drawing machine, wherein the rough drawing reduction ratio is 10.75%.
(3) Annealing: after the wire rod is put into a roller hearth STC annealing furnace, the temperature is raised to 750 ℃ at the speed of 150 ℃/h, and the heat is preserved for 4 hours; then cooling to 710 ℃ at a speed of 16 ℃/h, and preserving heat for 5h; cooling to 560 ℃ at a speed of 8 ℃/h, then stopping the furnace, discharging the wire from the furnace, and naturally cooling to room temperature in the air.
(4) And (3) yellowing: and soaking the annealed wire rod in 10% hydrochloric acid for 8min, and then placing the wire rod outdoors for 24h.
(5) Secondary pickling and phosphating process: soaking the wire rod after yellowing in hydrochloric acid with the mass fraction of 10% and the temperature of 20 ℃ for 6min, and then flushing the wire rod with a high-pressure water gun with the pressure of 0.3Mpa for 1 min; soaking in a water tank for 1min to rinse off residual hydrochloric acid on the surface of the wire rod, then soaking in a surface regulating tank for 1.5min, and soaking in a phosphating tank for 12min, wherein the phosphating tank is at 60 ℃, and the phosphating agent is zinc phosphating agent; the wire rod after phosphating is soaked in a neutralization tank for 1min to reduce the acidity of the surface of the wire rod, and finally soaked in a saponification tank for 2min, wherein the temperature of the saponification agent is 65 ℃.
(6) Fine drawing and drawing process: and drawing the wire rod subjected to secondary pickling phosphating to 35.50mm by using a wire drawing machine, wherein the finish drawing reduction ratio is 2.22%.
The hardness, tensile strength, spheroidization grade and phosphated film quality of the refined wire rod of the socket wrench produced by the implementation are shown in Table 2. The metallographic structure diagram is shown in fig. 3, and it can be seen from the diagram that the ferrite matrix is distributed with dot spheroidization bodies and a small amount of pearlite, and the spheroidization grade is grade 4.
Example 2
The Wittig structure of the hot rolled wire rod used in this example should be grade 0, diameter 38.00mm, and its chemical composition and mass percentage are shown in Table 1.
The production method of the refined wire rod of the socket wrench comprises the procedures of acid pickling phosphating, rough drawing, annealing, yellowing, secondary acid pickling phosphating and refined drawing, and the specific process steps are as follows:
(1) Acid pickling and phosphating: soaking the wire rod in hydrochloric acid with mass fraction of 20% and temperature of 32deg.C for 25min, and then flushing the wire rod with high-pressure water gun with pressure of 0.4Mpa for 1 min; soaking in a water tank for 1min to rinse off residual hydrochloric acid on the surface of the wire rod, then soaking in a surface regulating tank for 1min, and soaking in a phosphating tank for 15min, wherein the temperature of the phosphating tank is 50 ℃, and the phosphating agent is zinc phosphating agent; the wire rod after phosphating is soaked in a neutralization tank for 1min to reduce the acidity of the surface of the wire rod, and finally soaked in a saponification tank for 3min, wherein the temperature of a saponification agent is 60 ℃.
(2) Rough drawing and drawing process: and drawing the wire rod subjected to acid pickling and phosphating to 35.40mm by using a wire drawing machine, wherein the rough drawing reduction ratio is 13.22%.
(3) Annealing: after the wire rod is put into a roller hearth STC annealing furnace, the temperature is raised to 755 ℃ at a speed of 144 ℃/h, and the temperature is kept for 4.5h; then cooling to 720 ℃ at the speed of 18 ℃/h, and preserving heat for 3h; then cooling to 580 ℃ at the speed of 10 ℃/h, then stopping the furnace to discharge the wire from the furnace, and naturally cooling to room temperature in the air.
(4) And (3) yellowing: and soaking the annealed wire in 16% hydrochloric acid for 5min, and then placing the wire outdoors for 30h.
(5) Secondary pickling and phosphating process: soaking the wire rod after yellowing in hydrochloric acid with the mass fraction of 11% and the temperature of 24 ℃ for 5min, and then flushing the wire rod with a high-pressure water gun with the pressure of 0.3Mpa for 1 min; soaking in a water tank for 1min to rinse off residual hydrochloric acid on the surface of the wire rod, then soaking in a surface regulating tank for 1min, and soaking in a phosphating tank for 13min, wherein the phosphating tank is at 60 ℃, and the phosphating agent is zinc phosphating agent; the wire rod after phosphating is soaked in a neutralization tank for 1min to reduce the acidity of the surface of the wire rod, and finally soaked in a saponification tank for 2min, wherein the temperature of the saponification agent is 65 ℃.
(6) Fine drawing and drawing process: and drawing the wire rod subjected to secondary pickling phosphating to 35.10mm by using a wire drawing machine, wherein the finish drawing reduction rate is 1.69%.
The hardness, tensile strength, spheroidization grade and phosphated film quality of the refined wire rod of the socket wrench produced by the implementation are shown in Table 2. The metallographic structure diagram is shown in fig. 4, and it is clear from the diagram that dot spheroidization bodies and a small amount of pearlite are distributed on the ferrite matrix, and the spheroidization grade is grade 4.
Example 3
The Wittig structure of the hot rolled wire rod used in this example should be grade 1, diameter 40.00mm, and its chemical composition and mass percentage are shown in Table 1.
The production method of the refined wire rod of the socket wrench comprises the procedures of acid pickling phosphating, rough drawing, annealing, yellowing, secondary acid pickling phosphating and refined drawing, and the specific process steps are as follows:
(1) Acid pickling and phosphating: soaking the wire rod in hydrochloric acid with mass fraction of 22% and temperature of 21 ℃ for 23min, and then flushing the wire rod with a high-pressure water gun with pressure of 0.5Mpa for 1.5 min; then soaking in a water tank for 1.5min to rinse off residual hydrochloric acid on the surface of the wire rod, then soaking in a surface regulating tank for 1min, and soaking in a phosphating tank for 13min, wherein the phosphating tank temperature is 55 ℃, and the phosphating agent is zinc phosphating agent; the wire rod after phosphating is soaked in a neutralization tank for 2min to reduce the acidity of the surface of the wire rod, and finally soaked in a saponification tank for 5min, wherein the temperature of the saponification agent is 65 ℃.
(2) Rough drawing and drawing process: and drawing the wire rod subjected to acid pickling and phosphating to 35.80mm by using a wire drawing machine, wherein the rough drawing reduction ratio is 19.90%.
(3) Annealing: after the wire rod is put into a roller hearth STC annealing furnace, the temperature is raised to 760 ℃ at the speed of 115 ℃/h, and the heat is preserved for 5h; then cooling to 710 ℃ at a speed of 16 ℃/h, and preserving heat for 4h; cooling to 560 ℃ at a speed of 8 ℃/h, then stopping the furnace, discharging the wire from the furnace, and naturally cooling to room temperature in the air.
(4) And (3) yellowing: and soaking the annealed wire rod in 15% hydrochloric acid for 6min, and then placing the wire rod outdoors for 24h.
(5) Secondary pickling and phosphating process: soaking the wire rod after yellowing in hydrochloric acid with the mass fraction of 10% and the temperature of 26 ℃ for 5min, and then flushing the wire rod with a high-pressure water gun with the pressure of 0.5Mpa for 1 min; soaking in a water tank for 1min to rinse off residual hydrochloric acid on the surface of the wire rod, then soaking in a surface regulating tank for 1min, and soaking in a phosphating tank for 13min, wherein the phosphating tank is at 60 ℃, and the phosphating agent is zinc phosphating agent; the wire rod after phosphating is soaked in a neutralization tank for 1min to reduce the acidity of the surface of the wire rod, and finally soaked in a saponification tank for 2min, wherein the temperature of the saponification agent is 67 ℃.
(6) Fine drawing and drawing process: and drawing the wire rod subjected to secondary pickling phosphating to 35.30mm by using a wire drawing machine, wherein the finish drawing reduction ratio is 2.77%.
The hardness, tensile strength, spheroidization grade and phosphated film quality of the refined wire rod of the socket wrench produced by the implementation are shown in Table 2. The metallographic structure diagram is shown in fig. 5, and it can be seen from the diagram that dot spheroids and spheroids are distributed on the ferrite matrix, and the spheroidization grade is 5.
Example 4
The Wittig structure of the hot rolled wire rod used in this example should be 0 grade and 40mm in diameter, and its chemical composition and mass percentage are shown in Table 1.
The production method of the refined wire rod of the socket wrench comprises the procedures of acid pickling phosphating, rough drawing, annealing, yellowing, secondary acid pickling phosphating and refined drawing, and the specific process steps are as follows:
(1) Acid pickling and phosphating: soaking the wire rod in hydrochloric acid with the mass fraction of 16% and the temperature of 10 ℃ for 20min, and then flushing the wire rod with a high-pressure water gun with the pressure of 0.2Mpa for 1 min; soaking in a water tank for 1min to rinse off residual hydrochloric acid on the surface of the wire rod, then soaking in a surface regulating tank for 1min, and soaking in a phosphating tank for 10min, wherein the temperature of the phosphating tank is 50 ℃, and the phosphating agent is zinc phosphating agent; the wire rod after phosphating is soaked in a neutralization tank for 1min to reduce the acidity of the surface of the wire rod, and finally soaked in a saponification tank for 2min, wherein the temperature of a saponification agent is 60 ℃.
(2) Rough drawing and drawing process: and drawing the wire rod subjected to acid pickling and phosphating to 35.90mm by using a wire drawing machine, wherein the rough drawing reduction ratio is 19.45%.
(3) Annealing: after the wire rod is put into a roller hearth STC annealing furnace, the temperature is raised to 750 ℃ at a speed of 100 ℃/h, and the heat is preserved for 4 hours; then cooling to 710 ℃ at a speed of 16 ℃/h, and preserving heat for 3h; cooling to 560 ℃ at a speed of 8 ℃/h, then stopping the furnace, discharging the wire from the furnace, and naturally cooling to room temperature in the air.
(4) And (3) yellowing: and soaking the annealed wire rod in 8% hydrochloric acid for 5min, and then placing the wire rod outdoors for 24h.
(5) Secondary pickling and phosphating process: soaking the wire rod after yellowing in hydrochloric acid with the mass fraction of 8% and the temperature of 10 ℃ for 5min, and then flushing the wire rod with a high-pressure water gun with the pressure of 0.2Mpa for 1 min; soaking in a water tank for 1min to rinse off residual hydrochloric acid on the surface of the wire rod, then soaking in a surface regulating tank for 1min, and soaking in a phosphating tank for 10min, wherein the temperature of the phosphating tank is 50 ℃, and the phosphating agent is zinc phosphating agent; the wire rod after phosphating is soaked in a neutralization tank for 1min to reduce the acidity of the surface of the wire rod, and finally soaked in a saponification tank for 2min, wherein the temperature of a saponification agent is 60 ℃.
(6) Fine drawing and drawing process: and drawing the wire rod subjected to secondary pickling phosphating to 35.40mm by using a wire drawing machine, wherein the finish drawing reduction ratio is 2.77%.
The hardness, tensile strength, spheroidization grade and phosphated film quality of the refined wire rod of the socket wrench produced by the implementation are shown in Table 2.
Example 5
The Wittig structure of the hot rolled wire rod used in this example should be grade 1, diameter 38mm, and chemical composition and mass percentage are shown in Table 1.
The production method of the refined wire rod of the socket wrench comprises the procedures of acid pickling phosphating, rough drawing, annealing, yellowing, secondary acid pickling phosphating and refined drawing, and the specific process steps are as follows:
(1) Acid pickling and phosphating: soaking the wire rod in hydrochloric acid with mass fraction of 20% and temperature of 25deg.C for 25min, and then flushing the wire rod with high-pressure water gun with pressure of 0.35Mpa for 25 min; then soaking in a water tank for 1.5min to rinse off residual hydrochloric acid on the surface of the wire rod, and then soaking in a surface regulating tank
1.5min, soaking in a phosphating tank for 13min, wherein the temperature of the phosphating tank is 55 ℃, and the phosphating agent is zinc phosphating agent; the wire rod after phosphating is soaked in a neutralization tank for 2min to reduce the acidity of the surface of the wire rod, and finally soaked in a saponification tank for 3min, wherein the temperature of the saponification agent is 65 ℃.
(2) Rough drawing and drawing process: and drawing the wire rod subjected to acid pickling and phosphating to 35.6mm by using a wire drawing machine, wherein the rough drawing reduction ratio is 12.23%.
(3) Annealing: after the wire rod is put into a roller hearth STC annealing furnace, the temperature is raised to 755 ℃ at the speed of 125 ℃/h, and the temperature is kept for 4.5h; then cooling to 720 ℃ at the speed of 18 ℃/h, and preserving heat for 4h; cooling to 580 ℃ at the speed of 12 ℃/h, then stopping the furnace to discharge the wire from the furnace, and naturally cooling to room temperature in the air.
(4) And (3) yellowing: and soaking the annealed wire rod in 12% hydrochloric acid for 10min, and then placing the wire rod outdoors for 36h.
(5) Secondary pickling and phosphating process: soaking the wire rod after yellowing in hydrochloric acid with the mass fraction of 12% and the temperature of 25 ℃ for 7min, and then flushing the wire rod with a high-pressure water gun with the pressure of 0.35Mpa for 1.5 min; then soaking in a water tank for 1.5min to rinse off residual hydrochloric acid on the surface of the wire rod, then soaking in a surface regulating tank for 1.5min, and soaking in a phosphating tank for 12min, wherein the temperature of the phosphating tank is 55 ℃, and the phosphating agent is zinc phosphating agent; the wire rod after phosphating is soaked in a neutralization tank for 2min to reduce the acidity of the surface of the wire rod, and finally soaked in a saponification tank for 4min, wherein the temperature of the saponification agent is 65 ℃.
(6) Fine drawing and drawing process: and drawing the wire rod subjected to secondary pickling phosphating to 35.40mm by using a wire drawing machine, wherein the finish drawing reduction ratio is 1.12%.
The hardness, tensile strength, spheroidization grade and phosphated film quality of the refined wire rod of the socket wrench produced by the implementation are shown in Table 2.
Example 6
The Wittig structure of the hot rolled wire rod used in this example should be grade 0, diameter 38mm, and chemical composition and mass percentage are shown in Table 1.
The production method of the refined wire rod of the socket wrench comprises the procedures of acid pickling phosphating, rough drawing, annealing, yellowing, secondary acid pickling phosphating and refined drawing, and the specific process steps are as follows:
(1) Acid pickling and phosphating: soaking the wire rod in 24 mass percent hydrochloric acid at 40 ℃ for 30min, and then flushing the wire rod with a high-pressure water gun for 2min, wherein the pressure of the high-pressure water gun is 0.5Mpa; soaking in a water tank for 2min to rinse off residual hydrochloric acid on the surface of the wire rod, then soaking in a surface regulating tank for 2min, and soaking in a phosphating tank for 15min, wherein the phosphating tank is at 60 ℃, and the phosphating agent is zinc phosphating agent; the wire rod after phosphating is soaked in a neutralization tank for 3min to reduce the acidity of the surface of the wire rod, and finally soaked in a saponification tank for 5min, wherein the temperature of a saponification agent is 70 ℃.
(2) Rough drawing and drawing process: and drawing the wire rod subjected to acid pickling and phosphating to 35.50mm by using a wire drawing machine, wherein the rough drawing reduction ratio is 12.73%.
(3) Annealing: after the wire rod is put into a roller hearth STC annealing furnace, the temperature is raised to 760 ℃ at the speed of 150 ℃/h, and the heat is preserved for 5h; then cooling to 730 ℃ at a speed of 20 ℃/h, and preserving heat for 5h; then cooling to 600 ℃ at a speed of 15 ℃/h, then stopping the furnace to discharge the wire from the furnace, and naturally cooling to room temperature in the air.
(4) And (3) yellowing: and soaking the annealed wire rod in 16% hydrochloric acid for 10min, and then placing the wire rod outdoors for 48h.
(5) Secondary pickling and phosphating process: soaking the wire rod after yellowing in hydrochloric acid with the mass fraction of 16% and the temperature of 40 ℃ for 10min, and then flushing the wire rod with a high-pressure water gun with the pressure of 0.5Mpa for 2 min; soaking in a water tank for 2min to rinse off residual hydrochloric acid on the surface of the wire rod, then soaking in a surface regulating tank for 2min, and soaking in a phosphating tank for 15min, wherein the phosphating tank is at 60 ℃, and the phosphating agent is zinc phosphating agent; the wire rod after phosphating is soaked in a neutralization tank for 3min to reduce the acidity of the surface of the wire rod, and finally is soaked in a saponification tank for 5min, wherein the temperature of a saponification agent is 70 ℃.
(6) Fine drawing and drawing process: and drawing the wire rod subjected to secondary pickling phosphating to 35.2mm by using a wire drawing machine, wherein the finish drawing reduction ratio is 1.68%.
The hardness, tensile strength, spheroidization grade and phosphated film quality of the refined wire rod of the socket wrench produced by the implementation are shown in Table 2.
Example 7
The Wittig structure of the hot rolled wire rod used in this example should be grade 1, diameter 38mm, and chemical composition and mass percentage are shown in Table 1.
The production method of the refined wire rod of the socket wrench comprises the procedures of acid pickling phosphating, rough drawing, annealing, yellowing, secondary acid pickling phosphating and refined drawing, and the specific process steps are as follows:
(1) Acid pickling and phosphating: soaking the wire rod in hydrochloric acid with mass fraction of 22% and temperature of 25deg.C for 23min, and then flushing the wire rod with high-pressure water gun with pressure of 0.4Mpa for 1 min; soaking in a water tank for 2min to rinse off residual hydrochloric acid on the surface of the wire rod, then soaking in a surface regulating tank for 1min, and soaking in a phosphating tank for 12min, wherein the temperature of the phosphating tank is 57 ℃, and the phosphating agent is zinc phosphating agent; the wire rod after phosphating is soaked in a neutralization tank for 2min to reduce the acidity of the surface of the wire rod, and finally soaked in a saponification tank for 4min, wherein the temperature of a saponification agent is 62 ℃.
(2) Rough drawing and drawing process: the wire rod after acid washing and phosphating is drawn to 35.70mm by a wire drawing machine, and the rough drawing reduction ratio is 11.74%.
(3) Annealing: after the wire rod is put into a roller hearth STC annealing furnace, the temperature is raised to 756 ℃ at the speed of 130 ℃/h, and the heat is preserved for 4 hours; then cooling to 722 ℃ at the speed of 18 ℃/h, and preserving heat for 4h; cooling to 580 ℃ at a speed of 13 ℃/h, then stopping the furnace, discharging the wire from the furnace, and naturally cooling to room temperature in the air.
(4) And (3) yellowing: and soaking the annealed wire rod in 11% hydrochloric acid for 7min, and then placing the wire rod outdoors for 30h.
(5) Secondary pickling and phosphating process: soaking the wire rod after yellowing in hydrochloric acid with the mass fraction of 12% and the temperature of 28 ℃ for 5min, and then flushing the wire rod with a high-pressure water gun with the pressure of 0.3Mpa for 2 min; soaking in a water tank for 1min to rinse off residual hydrochloric acid on the surface of the wire rod, then soaking in a surface regulating tank for 1min, and soaking in a phosphating tank for 13min, wherein the temperature of the phosphating tank is 57 ℃, and the phosphating agent is zinc phosphating agent; the wire rod after phosphating is soaked in a neutralization tank for 1min to reduce the acidity of the surface of the wire rod, and finally soaked in a saponification tank for 4min, wherein the temperature of the saponification agent is 66 ℃.
(6) Fine drawing and drawing process: and drawing the wire rod subjected to secondary pickling phosphating to 35.3mm by using a wire drawing machine, wherein the finish drawing reduction ratio is 2.23%.
The hardness, tensile strength, spheroidization grade and phosphated film quality of the refined wire rod of the socket wrench produced by the implementation are shown in Table 2.
Example 8
The Wittig structure of the hot rolled wire rod used in this example should be 0 grade and 40mm in diameter, and its chemical composition and mass percentage are shown in Table 1.
The production method of the refined wire rod of the socket wrench comprises the procedures of acid pickling phosphating, rough drawing, annealing, yellowing, secondary acid pickling phosphating and refined drawing, and the specific process steps are as follows:
(1) Acid pickling and phosphating: soaking the wire rod in hydrochloric acid with mass fraction of 20% and temperature of 32deg.C for 23min, and then flushing the wire rod with high-pressure water gun with pressure of 0.2Mpa for 2 min; soaking in a water tank for 2min to rinse off residual hydrochloric acid on the surface of the wire rod, then soaking in a surface regulating tank for 1min, and soaking in a phosphating tank for 11min, wherein the phosphating tank temperature is 52 ℃, and the phosphating agent is zinc phosphating agent; the wire rod after phosphating is soaked in a neutralization tank for 1min to reduce the acidity of the surface of the wire rod, and finally soaked in a saponification tank for 4min, wherein the temperature of a saponification agent is 69 ℃.
(2) Rough drawing and drawing process: and drawing the wire rod subjected to acid pickling and phosphating to 35.85mm by using a wire drawing machine, wherein the rough drawing reduction ratio is 19.67%.
(3) Annealing: after the wire rod is put into a roller hearth STC annealing furnace, the temperature is raised to 752 ℃ at a speed of 140 ℃/h, and the temperature is kept for 4.5h; then cooling to 718 ℃ at a speed of 17 ℃/h, and preserving heat for 4.5h; cooling to 566 ℃ at a speed of 13 ℃/h, then stopping the furnace, discharging the wire from the furnace, and naturally cooling to room temperature in the air.
(4) And (3) yellowing: and soaking the annealed wire rod in 14% hydrochloric acid for 9min, and then placing the wire rod outdoors for 40h.
(5) Secondary pickling and phosphating process: soaking the wire rod after yellowing in hydrochloric acid with the mass fraction of 10% and the temperature of 25 ℃ for 7min, and then flushing the wire rod with a high-pressure water gun with the pressure of 0.3Mpa for 1 min; then soaking in a water tank for 1min to rinse off residual hydrochloric acid on the surface of the wire rod, then soaking in a surface regulating tank for 2min, and soaking in a phosphating tank for 11min, wherein the temperature of the phosphating tank is 51 ℃, and the phosphating agent is zinc phosphating agent; the wire rod after phosphating is soaked in a neutralization tank for 2min to reduce the acidity of the surface of the wire rod, and finally soaked in a saponification tank for 3min, wherein the temperature of the saponification agent is 62 ℃.
(6) Fine drawing and drawing process: and drawing the wire rod subjected to secondary pickling phosphating to 35.40mm by using a wire drawing machine, wherein the finish drawing reduction ratio is 2.49%.
The hardness, tensile strength, spheroidization grade and phosphated film quality of the refined wire rod of the socket wrench produced by the implementation are shown in Table 2.
TABLE 1 chemical composition and content (wt%) of hot rolled wire rods of each example
In table 1, the balance is Fe and unavoidable impurities.
TABLE 2 mechanical Properties of refined wire rod of socket wrench of various examples
Claims (7)
1. The production method of the refined wire rod of the socket wrench is characterized by comprising the working procedures of acid pickling phosphating, rough drawing, annealing, yellowing, secondary acid pickling phosphating and fine drawing;
the pickling and phosphating process uses a Wistatten structure of a hot rolled wire rod of grade 0 or grade 1, and the diameter is 38-40 mm; the hot rolled wire comprises the following chemical components in percentage by mass: 0.27 to 0.32 percent of C, 0.04 to 0.09 percent of Si, 0.70 to 1.00 percent of Mn, less than or equal to 0.035 percent of P, less than or equal to 0.035 percent of S, 0.30 to 0.50 percent of Cr, 0.10 to 0.15 percent of V, more than or equal to 0.0006 percent of B, and the balance of Fe and unavoidable impurities;
the annealing procedure is to heat up the wire rod to 750-760 ℃ at a speed of 100-150 ℃/h after the wire rod is put into a roller hearth STC annealing furnace, and keep the temperature for 4-5 h; then cooling to 710-730 ℃ at a speed of 16-20 ℃/h, and preserving heat for 3-5 h; cooling to 560-600 ℃ at a speed of 8-15 ℃/h, then stopping the furnace to discharge the wire from the furnace, and naturally cooling to room temperature in the air;
the yellowing process comprises the steps of soaking annealed wires in 8-16% hydrochloric acid for 5-10 min, and then placing the wires outdoors for 24-48 h;
the diameter of the refined wire rod of the socket wrench is 35.10-35.50 mm; hardness is less than or equal to 90HRB, tensile strength is 520-550 Mpa, spheroidization grade is 4 grade and 5 grade, and quality of phosphating film is 10-12g/m 2 。
2. The method for producing a refined wire rod for socket wrench as claimed in claim 1, wherein said acid pickling and phosphating step comprises the specific steps of: soaking the wire in hydrochloric acid with the mass fraction of 16-24% and the temperature of 10-40 ℃ for 20-30 min, then flushing the wire by a high-pressure water gun, and then sequentially soaking the wire in a water tank, a surface regulating tank, a phosphating tank, a neutralizing tank and a saponification tank.
3. The method for producing refined wire rod of socket wrench according to claim 2, wherein the pickling and phosphating process is performed by high-pressure water gun for 1-2 min, and the pressure of the high-pressure water gun is 0.2-0.5 Mpa; soaking the wire in a water tank for 1-2 min, soaking in a surface regulating tank for 1-2 min, soaking in a phosphating tank for 10-15 min, wherein the temperature of the phosphating tank is 50-60 ℃, and the phosphating agent is zinc phosphating agent; the wire rod after phosphating is soaked in a neutralization tank for 1-3 min, and is soaked in a saponification tank for 2-5 min, and the temperature of the saponification agent is 60-70 ℃.
4. The method for producing a refined wire rod by a socket wrench according to claim 3, wherein the rough drawing step is performed so that the wire rod is drawn to 35.40 to 35.90mm, and the rough drawing reduction ratio is 10.0 to 20%.
5. The method for producing a refined wire rod by using a socket wrench according to claim 4, wherein the secondary pickling and phosphating step comprises immersing the wire rod in 8-16% by mass of hydrochloric acid at 10-40 ℃ for 5-10 min, flushing the wire rod by using a high-pressure water gun, and immersing the wire rod in a water tank, a surface regulating tank, a phosphating tank, a neutralizing tank and a saponification tank in sequence.
6. The method for producing refined wire rod of socket wrench according to claim 5, wherein the secondary pickling and phosphating step is performed by flushing with a high-pressure water gun for 1-2 min, and the pressure of the high-pressure water gun is 0.2-0.5 Mpa; soaking the wire in a water tank for 1-2 min, soaking in a surface regulating tank for 1-2 min, soaking in a phosphating tank for 10-15 min, wherein the temperature of the phosphating tank is 50-60 ℃, and the phosphating agent is zinc phosphating agent; the wire rod after phosphating is soaked in a neutralization tank for 1-3 min, and is soaked in a saponification tank for 2-5 min, and the temperature of the saponification agent is 60-70 ℃.
7. The method for producing a refined wire rod by a socket wrench according to claim 6, wherein the refined drawing step is performed to draw the wire rod to 35.10 to 35.50mm, and the refined drawing reduction ratio is 1.0 to 3%.
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