CN117230385A - Low-cost M35 high-speed steel wire rod and preparation method thereof - Google Patents
Low-cost M35 high-speed steel wire rod and preparation method thereof Download PDFInfo
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- 229910000997 High-speed steel Inorganic materials 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 16
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 15
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 11
- 229910052796 boron Inorganic materials 0.000 claims abstract description 10
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 10
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 9
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 7
- 229910052751 metal Inorganic materials 0.000 claims abstract description 6
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 6
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 6
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 40
- 239000010959 steel Substances 0.000 claims description 40
- 238000003723 Smelting Methods 0.000 claims description 25
- 238000005242 forging Methods 0.000 claims description 23
- 238000004519 manufacturing process Methods 0.000 claims description 16
- 238000005096 rolling process Methods 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000005266 casting Methods 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 238000007872 degassing Methods 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 2
- 238000009628 steelmaking Methods 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 229910052726 zirconium Inorganic materials 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 4
- 238000005272 metallurgy Methods 0.000 abstract description 2
- 239000010955 niobium Substances 0.000 description 16
- 239000011651 chromium Substances 0.000 description 13
- 238000007670 refining Methods 0.000 description 13
- 238000009849 vacuum degassing Methods 0.000 description 9
- 238000005728 strengthening Methods 0.000 description 7
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000000956 alloy Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 238000001556 precipitation Methods 0.000 description 4
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- 238000005275 alloying Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 2
- 229910052702 rhenium Inorganic materials 0.000 description 2
- INZDTEICWPZYJM-UHFFFAOYSA-N 1-(chloromethyl)-4-[4-(chloromethyl)phenyl]benzene Chemical compound C1=CC(CCl)=CC=C1C1=CC=C(CCl)C=C1 INZDTEICWPZYJM-UHFFFAOYSA-N 0.000 description 1
- QIJNJJZPYXGIQM-UHFFFAOYSA-N 1lambda4,2lambda4-dimolybdacyclopropa-1,2,3-triene Chemical compound [Mo]=C=[Mo] QIJNJJZPYXGIQM-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910039444 MoC Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 229910001315 Tool steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000011534 incubation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention provides a low-cost M35 high-speed steel wire rod and a preparation method thereof, and relates to the technical field of metallurgy. The low-cost M35 high-speed steel wire rod comprises the following raw materials in percentage: 0.92 to 1.05 percent of C, 4.4 to 5.2 percent of Mo, 3.4 to 3.8 percent of Cr, 1.6 to 1.9 percent of V, 5.5 to 5.9 percent of W, 2.5 to 4.0 percent of Co, 0.5 to 1.2 percent of Nb, and B:0.005% -0.015%, zr:0.01 to 0.02 percent, re:0.015% -0.025%, S:0.001% -0.002%, P:0.001% -0.005% and the balance of Fe. By using a proper amount of Nb, B and Zr to replace Cr, V, W and other elements, the purpose of saving metal elements can be achieved, and the yield in the hot working process can be improved.
Description
Technical Field
The invention relates to the technical field of metallurgy, in particular to a low-cost M35 high-speed steel wire rod and a preparation method thereof.
Background
High speed steel is a tool steel with high hardness, high wear resistance and high heat resistance, also known as wind steel or frontal steel, meaning that it hardens even when cooled in air during quenching and is very sharp, or white steel. The high-speed steel material mainly comprises two basic components: one is a metal carbide (such as tungsten carbide, molybdenum carbide or vanadium carbide) that imparts better wear resistance and strength to the material; secondly, the steel matrix distributed around the carbide can make the material have better toughness and impact absorption and chipping prevention capabilities. The high-speed steel has high red hardness, good wear resistance, good technological performance and good strength and toughness, and is mainly used for manufacturing complex thin-edge and impact-resistant metal cutting tools, and can also be used for manufacturing cold working dies, rollers, high-temperature bearings, high-temperature springs and the like with high performance requirements.
The M35 high-speed steel is a high-speed steel variety widely applied, but the high cost of the product is not low due to the high content of alloy elements and low hot working yield.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a low-cost M35 high-speed steel wire rod and a preparation method thereof, and solves the problem that the cost of the M35 high-speed steel product is high.
In order to achieve the above purpose, the invention is realized by the following technical scheme: a low-cost M35 high-speed steel wire rod comprises the following raw materials in percentage: 0.92 to 1.05 percent of C, 4.4 to 5.2 percent of Mo, 3.4 to 3.8 percent of Cr, 1.6 to 1.9 percent of V, 5.5 to 5.9 percent of W, 2.5 to 4.0 percent of Co, 0.5 to 1.2 percent of Nb, and B:0.005% -0.015%, zr:0.01 to 0.02 percent, re:0.015% -0.025%, S:0.001% -0.002%, P:0.001% -0.005% and the balance of Fe.
Preferably, a method for preparing a low-cost M35 high-speed steel wire rod comprises the following steps:
s1, electric furnace melting
Adding the component raw materials into a steelmaking furnace, electrifying and heating until all the raw materials are melted, preserving heat for 15-20 min at the temperature of 1650-1750 ℃, and pouring molten steel after melting into an LF furnace;
s2, metal balance
The temperature of molten steel in an LF furnace is kept at a temperature above 1520 ℃, after the components of the sampled part of molten steel are measured by a direct-reading spectrometer, balanced metal materials are added into the LF furnace, and after the temperature is kept for 70-90 min, the molten steel is poured into a VD furnace;
s3, casting and forming
Degassing and stirring molten steel in a VD furnace, preserving heat for 30-40 min, adding Re element into the molten steel, and casting the molten steel in an ingot mould;
s4, smelting and forging
Solidifying molten steel in an ingot mould to form an ingot, then carrying out electroslag smelting treatment on the ingot, and forging the electroslag smelted ingot to form a square billet with the cross section of 120 mm;
s5, rolling and forming
And (3) heating the forged square billet to 1130-1230 ℃ in an electric furnace, preserving heat for 3-4 hours, taking out the square billet, putting the square billet on a high-speed continuous rolling mill, and rolling the square billet into a wire rod.
Preferably, a low cost M35 high speed steel wire is used in stamping dies, die parts, taps, tooth cutting tools, broaches, reamers and cutters.
The invention provides a low-cost M35 high-speed steel wire rod and a preparation method thereof. The beneficial effects are as follows:
1. the invention not only can save metal elements, but also can improve the yield in the hot working process and greatly reduce the comprehensive manufacturing cost of the M35 high-speed steel by using a proper amount of Nb, B and Zr to replace Cr, V, W and other elements and the modification effect of Re on nonmetallic inclusions. The M35 high-speed steel prepared by adopting a small amount of Nb, B and Zr components has the effect of obviously refining the microstructure of the high-speed steel, plays a role in strengthening the grain boundary of the high-speed steel, can refine grains and improves the effects of strength, plasticity and toughness. On the basis of functions of refining grains and improving the morphology of nonmetallic inclusions, the M35 high-speed steel shows higher strength, hardness and excellent impact toughness through means of fine grain strengthening and carbide dispersion precipitation strengthening.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one:
the embodiment of the invention provides a low-cost M35 high-speed steel wire rod, which comprises the following raw materials in percentage: 0.93% of C, 5.1% of Mo, 3.55% of Cr, 1.65% of V, 5.79% of W, 3.22% of Co, 0.55% of Nb, 0.0058% of B, 0.012% of Zr, 0.017% of Re, 0.004% of P, 0.0018% of S and the balance of Fe.
The phi 5.5mm hot rolled wire rod prepared by adopting the conventional electric furnace smelting, LF furnace refining, VD vacuum degassing, electroslag remelting smelting, cogging forging, finish forging and rolling production processes is annealed to obtain the hot rolled wire rod with the tensile strength of 866MPa, the elongation of 19.3 percent and the impact toughness of 37.3J.
By adding a proper amount of Nb, B, zr, re elements into the M35 steel, the consumption of a part of Cr, V and W elements is reduced, the hot workability of the M35 steel is effectively improved, the alloy cost is reduced, and the yield is improved, so that the comprehensive mechanical property advantage and the low-cost manufacturing advantage are obtained. Meanwhile, re element with a certain content is added into M35 steel, so that the effects of refining grains and eliminating nonmetallic inclusions are achieved. On the basis, the working procedures of smelting, electroslag, forging, rolling and heat treatment are carried out, so that the M35 high-speed steel wire rod has higher strength, higher hardness and excellent impact toughness. In order to ensure that the mechanical properties of the M35 high-speed steel are not weakened, the addition amount of C, cr, V, mo is controlled according to the following relation: c=0.06 mo+0.15v+0.12cr, and W, mo, co, cr, V, nb also satisfies the following relationship: (0.3W+0.5Mo+0.8Co)/(1.2Cr+1.4V+2.2Nb) is less than or equal to 0.8. Through the control of the content of the two quantified components, C, mo, V, cr can fully form carbide, avoid the precipitation of free C and ensure that the strengthening effect of Nb fine crystals is best.
Mo element is added into the alloy to be combined with C to form Mo 2 And C, carbide improves the stability of the carbide, is beneficial to improving the strength of the steel and improves the ductility and toughness of the steel. Tungsten is carbide forming element, and forms carbide with carbon in high hardness in the smelting or heat treatment process, so that the wear resistance of the steel is improved, the stability of the carbide is improved, and the strength of the steel is improved. The cobalt element can improve the hardenability of the steel, so that the hardness of the steel is improved, and the wear resistance is improved; the grain boundary of the steel can be reinforced, and the toughness of the steel is increased; the cobalt element is not easy to melt at high temperature, and the heat stability of the steel is improved. Chromium is a medium strength carbide forming element, and can effectively improve the alloy strength. Vanadium is a strong carbide forming element, and the carbide formed by V and C plays roles of precipitation strengthening and grain refinement, so that the strength and plasticity of the alloy can be improved. In addition, vanadium contributes to improving the wear resistance of the steel. Niobium is a strong carbide forming element, and the carbide formed by Nb and C plays roles of precipitation strengthening and refinement strengthening, and is also beneficial to improving the wear resistance of steel. Re is easy to form oxysulfide in the high-speed steel, and also interacts with other elements to realize the microalloying of the high-speed steel, and can purify grain boundaries, refine grains and improve the appearance, the size and the content of carbide in the high-speed steel. The main function of boron in the steel is to increase the hardenability of the steel, which is beneficial to saving more noble metals; the trace boron prevents ferrite crystal nucleus from forming on the crystal boundary, prolongs austenite incubation period, improves the hardenability of steel, and simultaneously is beneficial to improving the compactness and hot rolling performance of the steel. Zirconium is a strong carbide forming element, and its function in steel is similar to niobium, vanadium; a small amount of zirconium has the effects of degassing, purifying and refining grains; zirconium can remove oxygen, sulfur and phosphorus in the smelting process.
Embodiment two:
the embodiment of the invention provides a low-cost M35 high-speed steel wire rod, which comprises the following raw materials in percentage: 0.91% of C, 5.05% of Mo, 3.48% of Cr, 1.81% of V, 5.66% of W, 3.54% of Co, 0.63% of Nb, 0.0067% of B, 0.013% of Zr, 0.019% of Re, 0.0045% of R, 0.0014% of S and the balance of Fe.
The hot rolled wire rod with the diameter of 5.6mm prepared by adopting the conventional production processes of electric furnace smelting, LF furnace refining, VD vacuum degassing, electroslag remelting smelting, cogging forging, finish forging, rolling and the like is annealed to obtain the hot rolled wire rod with the tensile strength of 863MPa, the elongation of 19.5 percent and the impact toughness of 38.6J.
Embodiment III:
the embodiment of the invention provides a low-cost M35 high-speed steel wire rod, which comprises the following raw materials in percentage: 0.93% of C, 4.9% of Mo, 3.75% of Cr, 1.8% of V, 5.73% of W, 3.38% of Co, 0.68% of Nb, 0.0083% of B, 0.015% of Zr, 0.021% of Re, 0.0037% of P, 0.0017% of S and the balance of Fe.
The hot rolled wire rod with the diameter of 6.0mm prepared by adopting the conventional production processes of electric furnace smelting, LF furnace refining, VD vacuum degassing, electroslag remelting smelting, cogging forging, finish forging, rolling and the like is annealed to obtain the hot rolled wire rod with the tensile strength of 869MPa, the elongation of 19.2 percent and the impact toughness of 40.2J.
Embodiment four:
the embodiment of the invention provides a low-cost M35 high-speed steel wire rod, which comprises the following raw materials in percentage: 0.92% of C, 4.94% of Mo, 3.79% of Cr, 1.77% of V, 5.67% of W, 3.16% of Co, 0.99% of Nb, 0.0092% of B, 0.019% of Zr, 0.015% of Re, 0.0039% of P, 0.0016% of S and the balance of Fe.
The hot rolled wire rod with the diameter of 6.1mm prepared by adopting the conventional production processes of electric furnace smelting, LF furnace refining, VD vacuum degassing, electroslag remelting smelting, cogging forging, finish forging, rolling and the like is annealed to obtain the hot rolled wire rod with the tensile strength of 864MPa, the elongation of 19.8 percent and the impact toughness of 37.9J.
In examples 1-4, the content of C was controlled to be in the narrow low content range of 0.91% -0.93%, the content of P was controlled to be in the narrow range of 0.0037% -0.0045%, the content of S was controlled to be in the narrow range of 0.0014% -0.0018%, and different performance indexes were obtained by controlling the content of other alloying elements.
Fifth embodiment:
the embodiment of the invention provides a low-cost M35 high-speed steel wire rod, which comprises the following raw materials in percentage: 0.96% of C, 4.65% of Mo, 3.56% of Cr, 1.73% of V, 5.75% of W, 3.51% of Co, 0.84% of Nb, 0.012% of B, 0.017% of Zr, 0.024% of Re, 0.0038% of P, 0.0011% of S and the balance of Fe.
The phi 5.8mm hot rolled wire rod prepared by adopting the conventional production processes of electric furnace smelting, LF furnace refining, VD vacuum degassing, electroslag remelting smelting, cogging forging, finish forging, rolling and the like is annealed to obtain the tensile strength 872MPa, the elongation 19.9 percent and the impact toughness 36.4J.
Example six:
the embodiment of the invention provides a low-cost M35 high-speed steel wire rod, which comprises the following raw materials in percentage: 0.97% of C, 4.75% of Mo, 3.64% of Cr, 1.67% of V, 5.57% of W, 3.27% of Co, 1.18% of Nb, 0.013% of B, 0.016% of Zr, 0.025% of Re, 0.0046% of P, 0.0008% of S and the balance of Fe.
The hot rolled wire rod with the diameter of 5.9mm prepared by adopting the conventional production processes of electric furnace smelting, LF furnace refining, VD vacuum degassing, electroslag remelting smelting, cogging forging, finish forging, rolling and the like is annealed to obtain the hot rolled wire rod with the tensile strength of 870MPa, the elongation of 20.1 percent and the impact toughness of 39.5J.
Embodiment seven:
the embodiment of the invention provides a low-cost M35 high-speed steel wire rod, which comprises the following raw materials in percentage: 0.95% of C, 4.7% of Mo, 3.63% of Cr, 1.88% of V, 5.63% of W, 3.43% of Co, 1.09% of Nb, 0.0107% of B, 0.011% of Zr, 0.020% of Re, 0.0042% of P, 0.0009% of S and the balance of Fe.
The hot rolled wire rod with the diameter of 5.7mm prepared by adopting the conventional production processes of electric furnace smelting, LF furnace refining, VD vacuum degassing, electroslag remelting smelting, cogging forging, finish forging, rolling and the like is annealed to obtain the hot rolled wire rod with the tensile strength of 865MPa, the elongation of 19.4 percent and the impact toughness of 39.2J.
Example eight:
the embodiment of the invention provides a low-cost M35 high-speed steel wire rod, which comprises the following raw materials in percentage: 0.97% C, 4.85% Mo, 3.8% Cr, 1.64% V, 5.86% W, 3.29% Co, 0.96% Nb, 0.074% B, 0.014% Zr, 0.023% Re, 0.0047% P, 0.0010% S and the balance Fe.
The hot rolled wire rod with the diameter of 6.2mm prepared by adopting the conventional production processes of electric furnace smelting, LF furnace refining, VD vacuum degassing, electroslag remelting smelting, cogging forging, finish forging, rolling and the like is annealed to obtain the hot rolled wire rod with the tensile strength of 868MPa, the elongation of 19.7 percent and the impact toughness of 38.1J.
In examples 5 to 8, the C content was controlled to be in the high content range of 0.95% to 0.97%, the P content was controlled to be in the narrow range of 0.0038% to 0.0047%, and the S content was controlled to be in the narrow range of 0.0008% to 0.0011%, and different performance indexes were obtained by controlling the content of other alloying elements. The M35 high-speed steel wire rod prepared by the method has the characteristics of low specific production cost, few alloy elements, high processing yield and the like, and can be widely applied to manufacturing stamping dies, die parts (punches, pins and the like), taps, tooth cutting tools, broaches, reamers and various high-grade cutters.
Comparative example:
the steel wire rod of the comparative example comprises the following raw materials in percentage: 0.93% C, 4.71% Mo, 4.10% Cr, 1.85% V, 6.15% W, 4.7% Co, 0.01% Re, 0.002% P, 0.01% S and Fe for the rest.
The phi 5.7mm hot rolled wire rod prepared by adopting the conventional production processes of electric furnace smelting, LF furnace refining, VD vacuum degassing, electroslag remelting smelting, cogging forging, finish forging, rolling and the like is annealed to obtain the hot rolled wire rod with tensile strength of 829MPa, elongation of 16.5 percent and impact toughness of 28.9J.
In this example, the high-speed steel composition pairs of examples 1 to 8 and comparative examples are shown in Table 1:
TABLE 1 high-speed chemical composition (%)
In this example, the mechanical properties of the high-speed steel wire rods of examples 1 to 8 and comparative example are shown in table 1:
TABLE 2 mechanical Properties of high-speed Steel wire rod designed according to the present invention
| Diameter of | Tensile Strength (MPa) | Elongation (%) | Impact toughness (J) | |
| Example 1 | 5.5 | 866 | 19.3 | 37.3 |
| Example 2 | 5.6 | 863 | 19.5 | 38.6 |
| Example 3 | 6.0 | 869 | 19.2 | 40.2 |
| Example 4 | 6.1 | 864 | 19.8 | 37.9 |
| Example 5 | 5.8 | 872 | 19.9 | 36.4 |
| Example 6 | 5.9 | 870 | 20.1 | 39.5 |
| Example 7 | 5.7 | 865 | 19.4 | 39.2 |
| Example 8 | 6.2 | 868 | 19.7 | 38.1 |
| Comparative example | 5.7 | 829 | 16.5 | 28.9 |
Although embodiments of the present invention 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 invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. A low-cost M35 high-speed steel wire rod, characterized in that: comprises the following raw materials in percentage by weight: 0.92 to 1.05 percent of C, 4.4 to 5.2 percent of Mo, 3.4 to 3.8 percent of Cr, 1.6 to 1.9 percent of V, 5.5 to 5.9 percent of W, 2.5 to 4.0 percent of Co, 0.5 to 1.2 percent of Nb, and B:0.005% -0.015%, zr:0.01 to 0.02 percent, re:0.015% -0.025%, S:0.001% -0.002%, P:0.001% -0.005% and the balance of Fe.
2. A method for manufacturing a low-cost M35 high-speed steel wire rod according to claim 1, characterized in that: the method comprises the following steps:
s1, electric furnace melting
Adding the component raw materials into a steelmaking furnace, electrifying and heating until all the raw materials are melted, preserving heat for 15-20 min at the temperature of 1650-1750 ℃, and pouring molten steel after melting into an LF furnace;
s2, metal balance
The temperature of molten steel in an LF furnace is kept at a temperature above 1520 ℃, after the components of the sampled part of molten steel are measured by a direct-reading spectrometer, balanced metal materials are added into the LF furnace, and after the temperature is kept for 70-90 min, the molten steel is poured into a VD furnace;
s3, casting and forming
Degassing and stirring molten steel in a VD furnace, preserving heat for 30-40 min, adding Re element into the molten steel, and casting the molten steel in an ingot mould;
s4, smelting and forging
Solidifying molten steel in an ingot mould to form an ingot, then carrying out electroslag smelting treatment on the ingot, and forging the electroslag smelted ingot to form a square billet with the cross section of 120 mm;
s5, rolling and forming
And (3) heating the forged square billet to 1130-1230 ℃ in an electric furnace, preserving heat for 3-4 hours, taking out the square billet, putting the square billet on a high-speed continuous rolling mill, and rolling the square billet into a wire rod.
3. Use of a low cost M35 high speed steel wire rod according to claim 1 in stamping dies, die parts, taps, gear cutting tools, broaches, reamers and cutters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311334780.9A CN117230385A (en) | 2023-10-16 | 2023-10-16 | Low-cost M35 high-speed steel wire rod and preparation method thereof |
Applications Claiming Priority (1)
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101426944A (en) * | 2006-04-24 | 2009-05-06 | 维拉雷斯金属股份公司 | High-speed steel for saw blades |
| CN101596553A (en) * | 2009-06-26 | 2009-12-09 | 北京工业大学 | A kind of high speed steel roll collar and manufacture method thereof that is applied to high-speed rod-rolling mill |
| CN111607743A (en) * | 2020-05-15 | 2020-09-01 | 浙江精瑞工模具有限公司 | Novel high-vanadium W6+ Co high-speed steel material and preparation method thereof |
| US20210363603A1 (en) * | 2020-05-20 | 2021-11-25 | University Of Science And Technology Beijing | Hot-work die steel and a preparation method thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101426944A (en) * | 2006-04-24 | 2009-05-06 | 维拉雷斯金属股份公司 | High-speed steel for saw blades |
| CN101596553A (en) * | 2009-06-26 | 2009-12-09 | 北京工业大学 | A kind of high speed steel roll collar and manufacture method thereof that is applied to high-speed rod-rolling mill |
| CN111607743A (en) * | 2020-05-15 | 2020-09-01 | 浙江精瑞工模具有限公司 | Novel high-vanadium W6+ Co high-speed steel material and preparation method thereof |
| US20210363603A1 (en) * | 2020-05-20 | 2021-11-25 | University Of Science And Technology Beijing | Hot-work die steel and a preparation method thereof |
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