CN116891978A - Aluminum alloy stamping die steel and preparation method thereof - Google Patents
Aluminum alloy stamping die steel and preparation method thereof Download PDFInfo
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- CN116891978A CN116891978A CN202311159486.9A CN202311159486A CN116891978A CN 116891978 A CN116891978 A CN 116891978A CN 202311159486 A CN202311159486 A CN 202311159486A CN 116891978 A CN116891978 A CN 116891978A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 57
- 239000010959 steel Substances 0.000 title claims abstract description 57
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000002131 composite material Substances 0.000 claims abstract description 28
- 238000010438 heat treatment Methods 0.000 claims description 39
- 238000000137 annealing Methods 0.000 claims description 38
- 238000001816 cooling Methods 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 23
- 239000000203 mixture Substances 0.000 claims description 21
- 238000005242 forging Methods 0.000 claims description 18
- 238000004321 preservation Methods 0.000 claims description 18
- 238000001354 calcination Methods 0.000 claims description 16
- 239000000843 powder Substances 0.000 claims description 16
- 229910045601 alloy Inorganic materials 0.000 claims description 15
- 239000000956 alloy Substances 0.000 claims description 15
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 14
- 239000004327 boric acid Substances 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 12
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 239000002243 precursor Substances 0.000 claims description 8
- 238000003723 Smelting Methods 0.000 claims description 7
- 238000005266 casting Methods 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 6
- WDJHALXBUFZDSR-UHFFFAOYSA-N acetoacetic acid Chemical compound CC(=O)CC(O)=O WDJHALXBUFZDSR-UHFFFAOYSA-N 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 229910000365 copper sulfate Inorganic materials 0.000 claims description 5
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims description 5
- 239000010453 quartz Substances 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- -1 propane-2, 2-diylbis (thio) group Chemical group 0.000 claims description 4
- 238000002390 rotary evaporation Methods 0.000 claims description 4
- 239000012298 atmosphere Substances 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 238000009210 therapy by ultrasound Methods 0.000 claims description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims 2
- 229910052757 nitrogen Inorganic materials 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 20
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 12
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical class N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 9
- 229910052582 BN Inorganic materials 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 8
- 239000012299 nitrogen atmosphere Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 238000005299 abrasion Methods 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 5
- 229910052759 nickel Inorganic materials 0.000 description 5
- 239000013384 organic framework Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000011282 treatment Methods 0.000 description 4
- 238000009749 continuous casting Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 239000010954 inorganic particle Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- CAYIJDHBFNCNOL-UHFFFAOYSA-N 2-[2-(carboxymethylsulfanyl)propan-2-ylsulfanyl]acetic acid Chemical compound OC(=O)CSC(C)(C)SCC(O)=O CAYIJDHBFNCNOL-UHFFFAOYSA-N 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical group [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 238000004512 die casting Methods 0.000 description 2
- 238000005886 esterification reaction Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005058 metal casting Methods 0.000 description 2
- 125000004433 nitrogen atom Chemical group N* 0.000 description 2
- 229920000620 organic polymer Polymers 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 150000003568 thioethers Chemical class 0.000 description 2
- 238000002604 ultrasonography Methods 0.000 description 2
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011081 inoculation Methods 0.000 description 1
- 239000002054 inoculum Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 229910052702 rhenium Inorganic materials 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- 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
- 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
- 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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
-
- 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
- C22C38/40—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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
-
- 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
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
-
- 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
- C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/02—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition
- C23C18/12—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material
- C23C18/1204—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material inorganic material, e.g. non-oxide and non-metallic such as sulfides, nitrides based compounds
Abstract
The application belongs to the technical field of die steel, and particularly relates to aluminum alloy stamping die steel and a preparation method thereof. Wherein the die steel comprises the following components: 0.2-0.35% of C, 0.35-0.48% of Si, 0.32-0.56% of Mn, 0.25-0.42% of Nb, 0.62-0.83% of V, less than or equal to 0.01% of P, 1.8-3.4% of Mo, 0.24-0.39% of W, 0.22-0.36% of B, 0.18-0.24% of Ti, 0.23-0.35% of Cr, 1.2-2.4% of Ni, 0.45-0.58% of composite material and the balance of Fe; the prepared die steel has high impact property and good wear resistance, and is suitable for aluminum alloy stamping.
Description
Technical Field
The application relates to the technical field of die steel, in particular to aluminum alloy stamping die steel and a preparation method thereof.
Background
The mould is used as basic technological equipment for industrial development, and is a forming tool which is indispensable for realizing mass production of products in the manufacturing industry. The die processing has the characteristics of precision, high efficiency and low energy consumption, and statistical data shows that 60% -80% of workpieces are processed and molded by the die in the industries of aerospace, railway ships, electronic equipment and the like, so that the die processing technology directly influences the product quality and the production efficiency of related industries.
The mold steel is taken as a core raw material of a mold product, and is greatly increased along with the development of the mold industry, and the quality of the mold steel directly influences the service life of the mold. Development of high-quality high-grade die steel is a problem to be solved in the domestic die industry at present.
Chinese patent application No. 202211136903.3 discloses a die casting die steel for vehicles and a method for preparing the same. The preparation method comprises the following steps: s100: smelting the raw materials by an EBT electric furnace, LF refining and VD refining to obtain a metal melt; s200: casting the molten metal to obtain a metal casting; s300: and carrying out electroslag remelting, homogenization treatment, forging and heat treatment on the metal casting to obtain the die casting die steel. The Chinese patent with application number 202111203950.0 discloses a high-performance long-service-life aluminum alloy stamping tool die section bar and a preparation method thereof, wherein the section bar comprises the following components in percentage by mass: 3 to 4 percent of Ni,3.6 to 3.9 percent of C,2.0 to 2.8 percent of Si,0.6 to 1.0 percent of Mn, less than or equal to 0.1 percent of P, less than or equal to 0.04 percent of S,0.03 to 0.05 percent of Mg,0.03 to 0.05 percent of Re rare earth, and the balance of Fe and unavoidable impurities; smelting the weighed pig iron raw materials and scrap steel, and then adding ferrosilicon and a pure nickel plate; and pouring the molten iron into a casting ladle, adding a nodulizer and an inoculant into molten iron of the casting ladle in a wire feeding inoculation and nodulizing mode, pouring the molten iron into a crystallization furnace of a horizontal continuous casting device after the completion of the casting, realizing solidification of the molten iron and continuous casting of corresponding die sections according to the horizontal continuous casting process specification of the iron sections, and carrying out isothermal quenching treatment to obtain stamping tool die sections.
However, the abrasion to the die steel during actual operation is serious, and thus it is required to provide a process for producing a die steel having excellent abrasion resistance and good impact toughness, so that it has excellent properties when punching a die.
Disclosure of Invention
The application provides aluminum alloy stamping die steel and a preparation method thereof, wherein the die steel comprises the following components: 0.2-0.35% of C, 0.35-0.48% of Si, 0.32-0.56% of Mn, 0.25-0.42% of Nb, 0.62-0.83% of V, less than or equal to 0.01% of P, 1.8-3.4% of Mo, 0.24-0.39% of W, 0.22-0.36% of B, 0.18-0.24% of Ti, 0.23-0.35% of Cr, 1.2-2.4% of Ni, 0.45-0.58% of composite material and the balance of Fe; the prepared die steel has high impact property and good wear resistance, and is suitable for aluminum alloy stamping.
The technical scheme provided by the application is as follows:
an aluminum alloy stamping die steel, wherein the die steel comprises the following components: 0.2-0.35% of C, 0.35-0.48% of Si, 0.32-0.56% of Mn, 0.25-0.42% of Nb, 0.62-0.83% of V, less than or equal to 0.01% of P, 1.8-3.4% of Mo, 0.24-0.39% of W, 0.22-0.36% of B, 0.18-0.24% of Ti, 0.23-0.35% of Cr, 1.2-2.4% of Ni, 0.45-0.58% of composite material and the balance of Fe; preferably, it is: 0.25% of C, 0.42% of Si, 0.35% of Mn, 0.32% of Nb, 0.75% of V, less than or equal to 0.01% of P, 2.3% of Mo, 0.30% of W, 0.25% of B, 0.20% of Ti, 0.32% of Cr, 1.5% of Ni, 0.52% of composite material and the balance of Fe;
the preparation method of the composite material comprises the following steps:
s1, weighing dicyandiamide, and placing the dicyandiamide in a muffle furnace to react for 4-6 hours at 450-550 ℃ to obtain light yellow solid g-C 3 N 4 The temperature rising rate of the muffle furnace is 3-5 ℃/min, and is preferably: placing in a muffle furnace to react at 500 deg.C for 5 hr at a heating rate of 5 deg.C/min, mixing with boric acid, adding deionized water, and ultrasound for 20-40min to obtain a mixture, stirring at 90-110deg.C until water is evaporated to drynessTo pale yellow g-C 3 N 4 Boric acid precursor, preferably ultrasound for 30min to obtain a mixture, and stirring at 100deg.C until water is evaporated to dryness;
s2, the pale yellow g-C obtained in the step S1 is treated 3 N 4 Placing boric acid precursor in a quartz boat, calcining in a tube furnace under nitrogen atmosphere, and naturally cooling to room temperature after the reaction is finished to obtain white powder, namely BN-OH powder; wherein the calcining conditions of the tube furnace are as follows: raising the temperature to 750-900 ℃ at a heating rate of 3-5 ℃/min, and calcining for 1-2h; preferably, the temperature is increased to 800 ℃ at a heating rate of 5 ℃/min for calcination for 2 hours;
s3, taking tetrahydrofuran as a solvent, adding the white powder obtained in the step S2 and 2,2' - [ propane-2, 2-diylbis (thio) group ] diacetic acid into the mixture, uniformly mixing the mixture, adding copper sulfate into the mixture, raising the temperature to 70-85 ℃ in an inert atmosphere, reacting the mixture for 4-6 hours, preferably raising the temperature to 80 ℃ in a nitrogen atmosphere, and reacting the mixture for 5 hours to obtain the composite material.
The application also provides a preparation method of the aluminum alloy stamping die steel, which comprises the following steps:
a1, preparing raw materials according to the component proportion, mixing the raw materials, smelting, and casting to obtain a steel ingot;
a2, forging the obtained steel ingot, and cooling to 200-300 ℃ to obtain a wrought alloy; firstly, forging and cogging, wherein the heating temperature of the forging and cogging is 1220 ℃, the forging temperature is 1200 ℃, the final forging temperature is 800 ℃, then forging and forming are carried out by adopting hammer forging, and the forging and forming temperature is 1160 ℃;
and A3, performing heat treatment on the obtained wrought alloy to obtain the die steel.
Further, the heat treatment method in step A3 is fine grain heat treatment and isothermal spheroidizing annealing.
Further, the fine crystal heat treatment comprises the following steps: heating the wrought alloy to 1050-1100 ℃ at a speed of 100-120 ℃/h, preserving heat for 40-60min, cooling to 400-450 ℃ at a speed of 3-5 ℃/s, air-cooling to 250-280 ℃, and preserving heat for 6-8h; continuously heating to 650-680 ℃ at the speed of 120 ℃/h, preserving heat for 8-10h, and cooling to room temperature at the speed of 10 ℃/s; preferably, it is: heating the wrought alloy to 1050 ℃ at the speed of 120 ℃/h, preserving heat for 50min, cooling to 400 ℃ at the speed of 5 ℃/s, air-cooling to 260 ℃, and preserving heat for 10h; then continuously heating to 650 ℃ at the speed of 120 ℃/h, preserving heat for 10h, and cooling to room temperature at the speed of 10 ℃/s;
further, the isothermal spheroidizing annealing is a first annealing and a second annealing, the temperature of the first annealing is 800-850 ℃, and the heat preservation time of the first annealing is 10-18h; the heat preservation temperature of the second annealing is 700-750 ℃, and the heat preservation time of the second annealing is 10-18h; preferably, it is: the temperature of the first annealing is 820 ℃, and the heat preservation time of the first annealing is 15h; the heat preservation temperature of the second annealing is 720 ℃, and the heat preservation time of the second annealing is 15h.
The application has the following beneficial effects:
in the application, a composite material is introduced in the preparation process of the die steel, the composite material is prepared by coating inorganic particles with an organic polymer material, and dicyandiamide is firstly placed in a muffle furnace to obtain light yellow solid g-C under certain conditions 3 N 4 Mixing with boric acid, ultrasonic dispersing, and stirring to obtain yellowish g-C 3 N 4 Placing boric acid precursor in a quartz boat, calcining in a tube furnace under nitrogen atmosphere, and obtaining white powder, namely hydroxylated boron nitride powder after the reaction is finished; further mixing it with 2,2' - [ propane-2, 2-diylbis (thio) radical]The diacetic acid is mixed to generate esterification reaction under the catalysis of the copper sulfate, so that the coating modification of the boron nitride is realized, and the boron nitride is grafted on the organic framework. Coating the inorganic particles with an organic polymer material can increase the fluidity of the inorganic particles in the alloy powder; in addition, in the smelting process, S-S bonds contained in the organic framework are easy to break, S and Fe and Ni in the components form FeS and Ni-S in the continuously heating process, and the generation of sulfides is favorable for adhesion of a sample, so that abrasion to the material is reduced, and the wear resistance of the material is improved.
Detailed Description
The technical solutions of the embodiments of the present application will be clearly and completely described below in conjunction with the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In the present application, dicyandiamide CAS:461-58-5, boric acid CAS:10043-35-3, 2' - [ propane-2, 2-diylbis (thio) group ] diacetic acid CAS:4265-58-1, and all the medicines used in the application are commercially available.
Example 1
An aluminum alloy stamping die steel comprises the following components: 0.2% of C, 0.35% of Si, 0.32% of Mn, 0.25% of Nb, 0.62% of V, less than or equal to 0.01% of P, 1.8% of Mo, 0.24% of W, 0.22% of B, 0.18% of Ti, 0.23% of Cr, 1.2% of Ni, 0.45% of composite material and the balance of Fe.
The preparation method of the composite material comprises the following steps:
s1, weighing 15 parts by weight of dicyandiamide, and placing the dicyandiamide in a muffle furnace to react for 4 hours at 450 ℃ to obtain a pale yellow solid g-C 3 N 4 The temperature rising rate of the muffle furnace is 3 ℃/min, 100 parts by weight of deionized water is added into 12 parts by weight of boric acid after the muffle furnace and the boric acid are uniformly mixed, the mixture is obtained after ultrasonic treatment for 20min, and the mixture is stirred at 90 ℃ until the moisture is evaporated to dryness, thus obtaining light yellow g-C 3 N 4 Boric acid precursor;
s2, the pale yellow g-C obtained in the step S1 is treated 3 N 4 Placing boric acid precursor in a quartz boat, calcining in a tube furnace under nitrogen atmosphere, and naturally cooling to room temperature after the reaction is finished to obtain white powder, namely BN-OH powder; wherein the calcining conditions of the tube furnace are as follows: raising the temperature to 750 ℃ at a heating rate of 3 ℃/min, and calcining for 1h;
and S3, taking 100 parts by weight of tetrahydrofuran as a solvent, adding the white powder obtained in the step S2 and 15 parts by weight of 2,2' - [ propane-2, 2-diylbis (thio) group ] diacetic acid into the mixture, uniformly mixing, adding 6 parts by weight of copper sulfate into the mixture, raising the temperature to 70 ℃ in a nitrogen atmosphere, and performing rotary evaporation after reacting for 4 hours to obtain the composite material.
A preparation method of aluminum alloy stamping die steel comprises the following steps:
a1, preparing raw materials according to the component proportion, mixing the raw materials, smelting, and casting to obtain a steel ingot;
a2, forging the obtained steel ingot, and cooling to 200 ℃ to obtain a wrought alloy; firstly, forging and cogging, wherein the heating temperature of the forging and cogging is 1220 ℃, the forging temperature is 1200 ℃, the final forging temperature is 800 ℃, then forging and forming are carried out by adopting hammer forging, and the forging and forming temperature is 1160 ℃;
a3, performing heat treatment on the obtained wrought alloy to obtain die steel; the heat treatment method comprises fine grain heat treatment and isothermal spheroidizing annealing. The fine crystal heat treatment comprises the following steps: heating the wrought alloy to 1050 ℃ at a speed of 100 ℃/h, preserving heat for 40min, cooling to 400 ℃ at a speed of 3 ℃/s, air-cooling to 250 ℃, and preserving heat for 6h; then continuously heating to 650 ℃ at the speed of 120 ℃/h, preserving heat for 8h, and cooling to room temperature at the speed of 10 ℃/s; the isothermal spheroidizing annealing is a first annealing and a second annealing, the temperature of the first annealing is 800 ℃, and the heat preservation time of the first annealing is 10 hours; the heat preservation temperature of the second annealing is 700 ℃, and the heat preservation time of the second annealing is 10h.
Example 2
This example is different in the content of each component as compared to example 1, and the conditions during the preparation are different, and the rest refers to example 1.
The method comprises the following steps: wherein the die steel comprises the following components: 0.25% of C, 0.42% of Si, 0.35% of Mn, 0.32% of Nb, 0.75% of V, less than or equal to 0.01% of P, 2.3% of Mo, 0.30% of W, 0.25% of B, 0.20% of Ti, 0.32% of Cr, 1.5% of Ni, 0.52% of composite material and the balance of Fe;
the preparation method of the composite material is described in example 1, wherein in step S1, the composite material is placed in a muffle furnace to react for 5 hours at 500 ℃, and the heating rate is 5 ℃/min; ultrasonic treating for 30min to obtain a mixture, and stirring at 100deg.C until water is evaporated to dryness; the calcining condition of the tube furnace in the step S2 is that the temperature is increased to 800 ℃ at the heating rate of 5 ℃/min for calcining for 2 hours; in the step S3, the temperature is increased to 80 ℃ in the nitrogen atmosphere, the reaction is carried out for 5 hours, and the composite material is obtained by rotary evaporation.
A method for producing an aluminum alloy stamping die steel refers to example 1, in which in step A2, a wrought alloy is obtained by cooling to 250 ℃; in the fine-grain treatment process in the step A3, heating the wrought alloy to 1050 ℃ at the speed of 120 ℃/h, preserving heat for 50min, cooling to 400 ℃ at the speed of 5 ℃/s, then air-cooling to 260 ℃, and preserving heat for 8h; then continuously heating to 650 ℃ at the speed of 120 ℃/h, preserving heat for 10h, and cooling to room temperature at the speed of 10 ℃/s; in the isothermal spheroidizing annealing process, the temperature of the first annealing is 820 ℃, and the heat preservation time of the first annealing is 15h; the heat preservation temperature of the second annealing is 720 ℃, and the heat preservation time of the second annealing is 15h.
Example 3
This example is different in the content of each component as compared to example 1, and the conditions during the preparation are different, and the rest refers to example 1.
The method comprises the following steps: wherein the die steel comprises the following components: 0.35% of C, 0.48% of Si, 0.56% of Mn, 0.42% of Nb, 0.83% of V, less than or equal to 0.01% of P, 3.4% of Mo, 0.39% of W, 0.36% of B, 0.24% of Ti, 0.35% of Cr, 2.4% of Ni, 0.58% of composite material and the balance of Fe;
the preparation method of the composite material is described in example 1, wherein in step S1, the composite material is placed in a muffle furnace to react for 6 hours at 550 ℃, and the heating rate is 5 ℃/min; ultrasonic treating for 40min to obtain a mixture, and stirring at 110deg.C until water is evaporated to dryness; the calcining condition of the tube furnace in the step S2 is that the temperature is increased to 900 ℃ at the heating rate of 5 ℃/min for calcining for 2 hours; in the step S3, the temperature is increased to 85 ℃ in the nitrogen atmosphere, the reaction is carried out for 6 hours, and the composite material is obtained by rotary evaporation.
A method for producing an aluminum alloy stamping die steel refers to example 1, in which in step A2, a wrought alloy is obtained by cooling to 300 ℃; in the fine-grain treatment process in the step A3, heating the wrought alloy to 1100 ℃ at the speed of 120 ℃/h, preserving heat for 60min, cooling to 450 ℃ at the speed of 5 ℃/s, then air-cooling to 280 ℃, and preserving heat for 8h; heating to 680 deg.c at 120 deg.c/hr, maintaining for 10 hr, and cooling to room temperature at 10 deg.c/s; in the isothermal spheroidizing annealing process, the temperature of the first annealing is 850 ℃, and the heat preservation time of the first annealing is 18 hours; the heat preservation temperature of the second annealing is 750 ℃, and the heat preservation time of the second annealing is 18h.
Comparative example 1
In this comparative example, as compared with example 1, the composite material in the die steel component was replaced with the BN-OH powder prepared in step S2, and the other conditions were unchanged, referring to example 1.
Comparative example 2
In this comparative example, compared with example 1, the composite material in the die steel component was replaced with a mixture of BN-OH powder and 2,2' - [ propane-2, 2-diylbis (thio) -diacetic acid, prepared in step S2, in a mass ratio of 1:2; the remaining conditions were unchanged, refer to example 1.
Comparative example 3
In this comparative example, the composite material in the die steel component was replaced with a conventional commercially available boron nitride powder, and the conditions were unchanged from those in example 1.
Correlation testing
The samples prepared in examples 1-3 and comparative examples 1-3 were evaluated for wear resistance by using a UMT-3 high temperature frictional wear tester, and the abrasion time was 60 minutes for the abrasive SiC, load 20N; the impact toughness of the samples prepared in examples 1-3 and comparative examples 1-3 was measured using GB/T229, and the test results are shown in Table 1.
TABLE 1
The die steels prepared in examples 1 to 3 and comparative examples 1 to 3 were subjected to high temperature strength test, and the test results using GB/T4338-2006 "high temperature tensile test method for metallic materials" are shown in Table 2.
TABLE 2
From the above test data, it was shown that the die steels prepared in examples 1-3 had better wear resistance, especially example 2 performed best. The boron nitride material introduced in the application and FeS and Ni-S formed by the introduced disulfide bond and Fe and Ni in the components in the process of preparing the die steel are proved to be capable of effectively improving the wear resistance and high-temperature strength of the material.
Preparation of aluminum alloy stamping die steelIn the process, cr is introduced to enhance the strength, hardness, wear resistance, oxidation resistance and the like of steel, and carbide formed after the Cr is combined with carbon element can effectively improve the wear resistance; mo is introduced to form fine dispersion with carbon 2 The C carbide has higher solubility and can effectively improve the strength of steel; v can form tiny MC-type carbide with carbon, so that the strength of the steel is improved, grains can be refined, and the wear resistance is improved; si has a solid solution strengthening effect, and the diffusion rate of carbon in ferrite is suppressed due to the existence of Si, so that the growth of tempered carbide is suppressed, and the tempering stability of steel can be improved.
Further, the composite material is also introduced into the components of the die steel provided by the application, and dicyandiamide is firstly placed in a muffle furnace to obtain light yellow solid g-C under certain conditions 3 N 4 Mixing with boric acid, ultrasonic dispersing, and stirring to obtain yellowish g-C 3 N 4 Placing boric acid precursor in a quartz boat, calcining in a tube furnace under nitrogen atmosphere, and obtaining white powder, namely hydroxylated boron nitride powder after the reaction is finished; further mixing it with 2,2' - [ propane-2, 2-diylbis (thio) radical]The diacetic acid is mixed to generate esterification reaction under the catalysis of the copper sulfate, so that the coating modification of the boron nitride is realized, and the boron nitride is grafted on the organic framework. In the process of preparing the die steel, the raw materials are mixed and then smelted, and in the process of heating, the fluidity of the composite material containing the organic framework is gradually increased, so that the uniformity of the composite material in each component can be increased. The boron nitride is a crystal composed of nitrogen atoms and boron atoms, and the boron atoms and the nitrogen atoms are alternately distributed in the hexagonal layer, so that the boron nitride has excellent mechanical properties, high specific surface area and excellent chemical stability, and the wear resistance of the prepared material can be effectively improved; in addition, in the smelting process, S-S bonds contained in the organic framework are easy to break, S and Fe and Ni in the components form FeS and Ni-S in the continuously heating process, and the generation of sulfides is helpful for reducing the adhesion of a sample, so that the abrasion to the material is reduced, and the abrasion resistance of the material is further improved.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the application, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. An aluminum alloy stamping die steel is characterized by comprising the following components: 0.2-0.35% of C, 0.35-0.48% of Si, 0.32-0.56% of Mn, 0.25-0.42% of Nb, 0.62-0.83% of V, less than or equal to 0.01% of P, 1.8-3.4% of Mo, 0.24-0.39% of W, 0.22-0.36% of B, 0.18-0.24% of Ti, 0.23-0.35% of Cr, 1.2-2.4% of Ni, 0.45-0.58% of composite material and the balance of Fe;
the preparation method of the composite material comprises the following steps:
s1, weighing dicyandiamide, placing the dicyandiamide in a muffle furnace, reacting for 4-6 hours at 450-550 ℃ to obtain a pale yellow solid, uniformly mixing the pale yellow solid with boric acid, adding deionized water into the mixture, carrying out ultrasonic treatment for 20-40min to obtain a mixture, and stirring the mixture at 90-110 ℃ until moisture is evaporated to dryness to obtain a pale yellow precursor;
s2, placing the pale yellow precursor obtained in the step S1 into a quartz boat, calcining in a tube furnace under the atmosphere of nitrogen, and naturally cooling to room temperature after the reaction is finished to obtain white powder;
s3, taking tetrahydrofuran as a solvent, adding the white powder obtained in the step S2 and 2,2' - [ propane-2, 2-diylbis (thio) group ] diacetic acid into the mixture, uniformly mixing the mixture, adding copper sulfate into the mixture, raising the temperature to 70-85 ℃ under an inert atmosphere, reacting the mixture for 4-6 hours, and performing rotary evaporation to obtain the composite material.
2. The aluminum alloy stamping die steel as recited in claim 1, wherein the temperature rise rate in step S1 is 3-5 ℃/min.
3. The aluminum alloy stamping die steel as recited in claim 1, wherein the calcining conditions of the tube furnace in step S2 are: raising the temperature to 750-900 ℃ at the heating rate of 3-5 ℃/min, and calcining for 1-2h.
4. A method for producing an aluminum alloy stamping die steel as recited in any one of claims 1 to 3, comprising the steps of:
a1, preparing raw materials according to the component proportion, mixing the raw materials, smelting, and casting to obtain a steel ingot;
a2, forging the obtained steel ingot, and cooling to 200-300 ℃ to obtain a wrought alloy;
and A3, performing heat treatment on the obtained wrought alloy to obtain the die steel.
5. The method for producing an aluminum alloy stamping die steel as recited in claim 4, wherein the heat treatment in the step A3 is a fine grain heat treatment and an isothermal spheroidizing annealing.
6. The method for producing aluminum alloy stamping die steel as recited in claim 5, wherein the fine grain heat treatment comprises the steps of: heating the wrought alloy to 1050-1100 ℃ at a speed of 100-120 ℃/h, preserving heat for 40-60min, cooling to 400-450 ℃ at a speed of 3-5 ℃/s, air-cooling to 250-280 ℃, and preserving heat for 6-8h; and then heating to 650-680 ℃ continuously at the speed of 120 ℃/h, preserving heat for 8-10h, and cooling to room temperature at the speed of 10 ℃/s.
7. The method for manufacturing aluminum alloy stamping die steel according to claim 5, wherein the isothermal spheroidizing annealing is a first annealing and a second annealing, the temperature of the first annealing is 800-850 ℃, and the heat preservation time of the first annealing is 10-18h; the heat preservation temperature of the second annealing is 700-750 ℃, and the heat preservation time of the second annealing is 10-18h.
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