WO2008146929A1 - 加工性に優れた耐磨耗鋼板およびその製造方法 - Google Patents
加工性に優れた耐磨耗鋼板およびその製造方法 Download PDFInfo
- Publication number
- WO2008146929A1 WO2008146929A1 PCT/JP2008/060096 JP2008060096W WO2008146929A1 WO 2008146929 A1 WO2008146929 A1 WO 2008146929A1 JP 2008060096 W JP2008060096 W JP 2008060096W WO 2008146929 A1 WO2008146929 A1 WO 2008146929A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wear
- steel sheet
- resistant steel
- test
- phase
- Prior art date
Links
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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium 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
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
-
- 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
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
-
- 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
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0226—Hot rolling
-
- 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
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
- C21D8/0263—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot rolling
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/14—Ferrous alloys, e.g. steel alloys containing 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
- C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
-
- 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
- C21D1/06—Surface hardening
-
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/004—Dispersions; Precipitations
-
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/005—Ferrite
-
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/009—Pearlite
Definitions
- the present invention is used in the fields of construction, civil engineering, mining, etc., for example, power shovels, bulldozers, hoppers, buckets. Suitable for materials such as industrial machines such as buckets and transporting machines where wear or abrasion due to contact with earth and sand is a problem.
- BACKGROUND OF THE INVENTION 1 Field of the Invention The present invention relates to abrasion resistant steel and a method for producing the same, and particularly to a material having excellent bending formability.
- steel materials with excellent wear resistance are used to extend the service life. It is known that the abrasion resistance property of steel is improved by increasing the hardness, and a large amount of alloying elements such as Cr and Mo are required for parts that require wear resistance. Steel materials that have been hardened by heat treatment such as quenching have been used.
- Japanese Patent Application Laid-Open No. Sho 62-1-4 2 7 2 6 contains C: 0.1 0-0.19%, contains appropriate amounts of Si and Mn, and C eq is 0.3.
- the steel limited to 5 to 0.44% is directly quenched after hot rolling, or re-heated to 90 to 95 ° C and then quenched, at 300 to 500 ° C.
- JP-A-6 3-1 6 9 3 5 9 includes C: 0.1 0 to 0.20% and adjusts Si, Mn, P, S, N, and A 1 to appropriate amounts. , Or further to steel containing one or more of Cu, Ni, Cr, Mo, B after hot rolling and directly quenching, or after rolling and allowing to cool, then reheating and quenching 340HB (Brinell hardness) A method of manufacturing a wear-resistant thick steel plate that imparts the above hardness has been proposed.
- solute C in order to increase the hardness of the hardened structure, it is generally necessary to increase the amount of solute C in the steel material.
- an increase in the amount of solute C causes a decrease in weldability, bending workability, etc.
- a decrease in bending workability restricts the bending work required as a member and limits the use conditions.
- Japanese Patent No. 3 0 8 9 8 8 2 discloses C: 0. 1 to 0 to 0.4 5%, Si, Mn, P, S, and N are adjusted to appropriate amounts, and Ti: 0.1 to 1.0% is contained, and the average particle size is 0.5.
- Ti / Cm or more T i C precipitates or composite precipitates of T i C and T i N, T i S, including 40 0 Zmm 2 or more, T i * force S 0. 0
- a wear-resistant steel having an excellent surface property of 5% or more and less than 0.4% has been proposed.
- Japanese Patent Laid-Open No. 4 1 6 1 6 discloses that C: 0.05 to 0.4: 5%, S i: 0.1 to 1.0%, Mn: 0.1 to 1.
- Manufacture of wear-resistant steel plates with improved bending workability by containing 0%, T i: 0.05 to 1.5%, and having a surface hardness of 40 1 or less in terms of Brinellhardness A method has been proposed.
- the surface hardness is regulated to 401 or less in terms of Brinell hardness in order to ensure bending workability, but the amount of alloying elements added is large. Therefore, the tensile strength exceeds 7 8 OMPa, and sufficient bending workability is not achieved from the viewpoint of reducing the load during processing.
- Japanese Patent Laid-Open Nos. 62-14-272 6 Japanese Patent Laid-Open No. 63-1 693 559, Japanese Patent Laid-Open No. 1-14 2 023, Japanese Patent Laid-Open No. Hei 4 1 4 1 6 1 6 It is essential to perform heat treatment on the wear-resistant steel described in No. 6 publication, leaving problems in terms of production period and production cost.
- the present invention provides a method for producing a wear-resistant steel plate that can be produced without being subjected to heat treatment while being hot-rolled, and that has excellent wear resistance and bendability.
- the inventors have an influence on wear plugs and bending workability. As a result of diligent research on various factors, it has a component system containing T i and C, and has a microstructure of base metal force. S Ferrite and pearlite structure as-rolled ) Is a complex structure (base phase), and a hard second phase (hard phase : Ti-based carbide) in the matrix. It has been found that by dispersing, it is possible to reduce the processing load during bending while maintaining wear resistance, that is, it is possible to improve bending workability.
- the present invention has been made on the basis of the further findings based on the obtained knowledge.
- Mass 0 /. C 0.0 5 to 0.35%, S i: 0.0 5 to 1.0%, Mn: 0.1 to 2.0%, T i: 0.1 to 1.2% , AI: 0.1% or less, Cu: 0.1-1.0%, Ni: 0.1-2.0%, Cr: 0.1-1.0%, Mo: 0.0%, 1.0%, W: 0.05 ⁇ ; 1.0%, B: 0. 0 0 0 3 to 0.0 0 3 0% 1 type or 2 types or more A wear-resistant steel sheet having an excellent workability consisting of the balance Fe and inevitable impurities, wherein DI * represented by the formula (1) is less than 60.
- the wear-resistant steel sheet according to 3, wherein the hard phase has a dispersion density of 400 pieces / mm 2 or more. 5. After hot rolling a steel slab having the composition described in 1 or 2, it is cooled to 400 ° C or less at a cooling rate of 3 or less in 2 to produce a wear-resistant steel plate with excellent workability. Manufacturing method.
- the rolling reduction at 920 ° C. or lower is set to 30% or more, and the rolling end temperature is set to 900 or lower, and wear resistance with excellent workability according to 5, Steel manufacturing method.
- the hard phase is preferably a Ti-based carbide such as T i C, and is contained in T i C, (Nb T i) C, (VT i) C, or T i C.
- T i C Ti-based carbide
- Nb T i Nb T i
- VT i T i C
- T i C T i C
- Mo and W are dissolved is an example.
- a wear-resistant steel sheet having improved bending workability without degrading the wear resistance can be obtained after hot rolling without being subjected to heat treatment.
- Reasonable production such as shortening the production period, is possible and has a remarkable industrial effect.
- Figure 1 A graph showing the effect of Ti addition on wear resistance.
- Fig. 2 Diagram showing the effect of Ti addition on tensile properties (yield strength: Y S, tensile strength: T S).
- Figure 3 Diagram showing the effect of D I * on wear resistance.
- Figure 4 Diagram showing the effect of D I * on tensile properties (yield strength: YS, tensile strength: TS).
- Ti carbide is formed as a hard second phase (hereinafter also referred to as a hard phase), and is an effective element for improving wear resistance. 0 Containing 5% or more is required.
- C is specified in the range of 0.05 to 0.35%. In addition, Preferably it is 0.15 to 0.32%.
- Ti, together with C, is an important element in the present invention, and is an essential element that forms carbides as a hard phase that contributes to improved wear resistance. In order to obtain such an effect, a content of 0.1% or more is required.
- Fig. 1 shows the effect of Ti addition on wear resistance
- Fig. 2 shows the effect of Ti addition on tensile properties (yield strength: Y S, tensile strength: TS).
- the vertical axis shows the wear resistance ratio in the rubber wheel abrasion test compared to the abrasion weight loss of mild steel (S S 400).
- the wear resistance is as high as that of general wear-resistant steel, and TS is reduced to 80 OMPa or less. In other words, it is possible to improve workability while having the same wear characteristics as the conventional wear-resistant steel plate subjected to quenching heat treatment.
- the test steel in the rubber wheel wear test is massy. 0.3% 3% C— 0.35% S i-0.82% Mn-0.05-1. After rolling a steel slab containing 2% T i to 19 mm t, cooling rate: Manufactured by air cooling at 0.5 ° C / S.
- the obtained steel sheet was subjected to a tensile test and an abrasion test.
- the tensile test was conducted in accordance with the provisions of JI S Z 2201 and a J I S No. 5 test piece was sampled and subjected to a tensile test to determine the tensile properties (tensile strength: TS, yield strength: YS).
- the abrasion test is performed by a rubber wheel abrasion test in accordance with ASTM G 65, and the test result shows the ratio of the wear amount of mild steel (SS 400) to the wear amount of each test steel plate. Organized as wear ratio. The larger the wear resistance ratio, the better the wear characteristics.
- As a comparative test the same test as described above was performed for wear-resistant steel sheets produced by general heat treatment. The results obtained are shown in Fig. 1 and Fig. 2 for conventional steel.
- the general wear-resistant steel sheet is: 0.15 mass% C—0.35 mass% Si—1.50 mass% Mn—0.13 mass% Cr-0.13 mass% Mo-0.01 mass% Ti-0.0010 mass% B
- This is a material that is hot-rolled to 900 ° C and then subjected to quenching heat treatment, and has a Brinell hardness of about 400 HB.
- the hard phase (Ti carbide) becomes coarse, and cracks occur starting from the coarse hard phase during bending. Therefore, it is limited to the range of ⁇ ⁇ . 1 to 1.2%, preferably 0.1 to 0.8%.
- Si is an effective element as a deoxidizing element, and in order to obtain such an effect, its content must be 0.05% or more.
- Si is an effective element that contributes to high hardness by solid solution strengthening by solid solution strengthening, but inclusion exceeding 1.0% lowers ductility and toughness.
- problems such as an increase in inclusion content occur. Therefore, 1 is preferably limited to the range of 0.05 to 1.0%. More preferably, it is 0.05 to 0.40%.
- Mn is an effective element that contributes to higher hardness by solid solution strengthening, and in order to obtain such an effect, it needs to be contained in an amount of 0.1% or more. On the other hand, if the content exceeds 2.0%, weldability is lowered. For this reason, Mn is preferably limited to a range of 0.1 to 2.0%. More preferably, it is 0.1 to 1.6%.
- a 1 acts as a deoxidizing element, and such an effect is recognized at a content of 0.0 20% or more, but a large content exceeding 0.1% is the cleanliness of steel. Reduce (cleanness). For this reason, A 1 is limited to 0 .. 1% or less. It is preferable.
- Cu is an element that improves hardenability by dissolving in solid solution. To obtain this effect, Cu must be contained in an amount of 0.1% or more. On the other hand, if the content exceeds 1.0%, hot workability is lowered. For this reason, Cu is preferably limited to a range of 0.1 to 1.0%. More preferably, the content is 0.1 to 0.5%.
- Ni is an element that improves the hardenability by dissolving it in a solid solution, and such an effect becomes remarkable when it is contained in an amount of 1% or more.
- the content exceeds 2.0%, the material cost increases remarkably.
- Ni is preferably limited to a range of 0.1 to 2.0%. More preferably, the content is 0.1 to 1.0%.
- Cr has the effect of improving hardenability. To obtain such an effect, it needs to be contained in an amount of 0.1% or more. However, if it exceeds 1.0%, the weldability is lowered. Let For this reason, it is preferable that O is limited to the range of 0.1 to 1.0%. More preferably, the content is 0.1 to 0.8%. More preferably, it is 0.4 to 0.7%.
- Mo is an element that improves hardenability. In order to obtain such an effect, the content of 0.05% or more is required. On the other hand, if it exceeds 1.0%, the weldability is lowered. Therefore, Mo is preferably limited to the range of 0.05 to 1.0%. More preferably, it is 0.05 to 0.40%.
- W 0.05-1.0% w is an element that improves hardenability. In order to obtain such an effect, the content of 0 to 0 5% or more is required. On the other hand, if it exceeds 1.0%, weldability is lowered. Therefore, W is preferably limited to a range of 0.05 to 1.0%. More preferably, it is 0.05 to 0.40%. Mo and W have the effect of increasing the amount of the hard phase because they dissolve in TiC.
- B is an element that segregates at the grain boundary and strengthens the grain boundary to effectively contribute to the improvement of toughness. In order to obtain such an effect, 0.000% or more Must be included. On the other hand, if it exceeds 0.0 0 30%, the weldability is lowered. For this reason, B is preferably limited to the range of 0.0 0 0 3 to 0.0 0 30%. More preferably, it is 0.0 0 0 3 to 0.0 0 15%.
- DI * hardenability index value
- DI * 3 3. 8 5 X (0. 1 XC *) ° ⁇ 5 X (0. 7 XS i + 1)
- X 3. 3 3 XMn + 1)
- X (0. 3 5 XC u + 1)
- X (0. 3 6 XN i + 1)
- X (2. 1 6 XC r + 1)
- X (3 XM o * + 1) X ( 1.
- the vertical axis shows the wear resistance ratio comparing the amount of wear in the rubber wheel wear test with the amount of wear of mild steel (SS 400). The higher the wear resistance ratio, the better the wear characteristics. From Fig. 3 and Fig. 4, when DI * is less than 60, the tensile strength: TS is less than 800 M Pa and the wear amount is less than that of general wear-resistant steel. At the same level.
- DI * 60 or more
- the wear resistance is excellent, but the tensile strength is 80 Above OMP a, workability is inferior. If DI * is greater than 60, it is presumed to be a ferrite and bainite structure.
- the test steel is 0.34% C— 0.22% S i-0.55% Mn-0.22% in 1 in m a s s%. 11, 1 ⁇ 1,. ]: One or more of, 1 ⁇ 0, W or more, and a steel piece with DI * of 40 to 120 is rolled to 8 mm t and then air-cooled (cooling rate: 1.2 ° CZ s) Manufactured.
- the obtained steel sheet was subjected to a tensile test and an abrasion test.
- JISZ2201 JIS5 test specimens were collected and subjected to a tensile test to determine tensile properties (tensile strength TS, yield strength YS).
- the rubber wheel wear test was conducted in accordance with AS TMG 65, and the test results were organized as the wear resistance ratio of the ratio of wear of mild steel (S S 400) to that of each steel plate.
- the above-mentioned components are basic components, and excellent wear resistance can be obtained.
- a hard second phase is formed, which contributes to the wear resistance.
- Nb and V can be contained as selective elements.
- Nb When Nb is added in combination with T i, it forms a composite carbide of T i and Nb ((N b T i) C), which is dispersed as a hard second phase and is effective in improving wear resistance. It is an element that contributes to In order to obtain such an effect of improving wear resistance, a content of 0.005% or more is required. On the other hand, if the content exceeds 1.0%, the hard second phase (Ti, Nb composite carbide) becomes coarse and cracks starting from the hard second phase (Ti, Nb composite carbide) during bending. Will occur. For this reason, when Nb is added, Nb is preferably limited to a range of 0.005 to 1.0%. More preferably, the content is 0.1 to 0.5%.
- V When added in combination with T i, V, like Nb, forms a composite carbide of T i and V ((VT i) C), disperses it as a high-quality second phase, It is an element that contributes to effective wear resistance. In order to obtain such an effect of improving wear resistance, 0.0 0 Containing 5% or more is required.
- V is preferably limited to a range of 0.005 to 1.0%. More preferably, the content is 0.1 to 0.5%.
- the hard second phase is only (N b VT i) C, which has the same effect of improving wear resistance.
- N When N is contained, carbonitrides may be formed in addition to carbides, but similar effects can be obtained.
- the amount of N added exceeds 0.01%, the proportion of N in the carbonitride increases and the hardness of the hard second phase decreases, but the wear resistance deteriorates. Concerned. Therefore, it is preferable that the amount of N added is not more than 0.0.
- the metal structure is a structure in which the ferrite phase is a base phase and a hard phase (hard second phase) is dispersed in the base phase.
- the base phase means that the volume ratio is 90% or more.
- the two phases of ferrite and pearlite account for 90% or more of the total.
- the ferrite phase has a volume fraction of 70% or more and a ferrite phase having an equivalent circle diameter and an average particle diameter of 20 fm.
- the base phase has a Brinell hardness of 30 O HB or less.
- the hard phase is preferably Ti carbide such as T i C.
- T i C, (N b T i) C, (VT i) C, or T i C contains Mo, W Can be illustrated as a solid solution.
- the size of the hard phase is not particularly limited, but is preferably about 0.5 ⁇ m or more and 50 ⁇ m or less from the viewpoint of wear resistance. Further, the dispersion density of the hard phase is preferably 400 pieces / "mm 2 or more from the viewpoint of wear resistance.
- the average equivalent diameter of the obtained circle-equivalent diameters is taken as the size of the hard phase (average particle size) in the steel sheet.
- the wear-resistant steel sheet according to the present invention is obtained by melting a molten steel having the above-described composition by a known melting method, and by using a continuous forging method or an ingot-disintegrating rolling method, It is preferable to use a material.
- the steel material is immediately hot-rolled without being cooled, or after being cooled, re-heated to 9500-125 ° C and then hot-rolled to obtain a steel plate having a desired thickness. . After hot rolling, it is cooled at an average cooling rate of 2 ° C / s or less without heat treatment.
- the hot rolling conditions are not particularly limited as long as the steel sheet can have a desired size and shape.
- the surface temperature of the steel sheet is 9 2 0. It is necessary that the rolling reduction at 30 ° C. or less is 30% or more and the rolling end temperature is 90 ° C. or less.
- the wear-resistant steel sheet according to the present invention does not need to be heat-treated after hot rolling, and can be used for various applications that require bending while hot rolling.
- Example Molten steel with the composition shown in Table 1 is melted in a vacuum melting furnace to form a small steel ingot (50 kg) (steel material), and then heated to 1 0 5 0 to 1 2 5 0 and hot rolled To give a test steel plate with a thickness of 6 to 100 mm. Each steel plate was subjected to microstructure observation, tensile test, abrasion test, Charpy impact test, and bend test.
- the specimens for tissue observation were corroded by nital, and at the position 1 mm below the surface layer, using an optical microscope (magnification ratio: 400 times), Identification, ferrite grain diameter, and size and number of hard phases were measured.
- the structure occupying 90% or more was the base phase, and the size of the hard phase was the average particle size obtained by the method described above.
- JISZ 2 201 JIS No. 5 test specimens were collected and subjected to a tensile test in accordance with the provisions of JISZ 2 24 1, tensile properties (yield strength: YS, tensile strength: TS). Tensile strength (T S) ⁇ 80 OMPa and yield strength (Y S) ⁇ 60 0 MPa are within the scope of the present invention.
- test piece was t (plate thickness) X 20 X 7 5 (mm), and the rubber wheel abrasion test was performed using abrasive sand in accordance with the regulations of AS TM G 65. After the test, the amount of wear of the test piece was measured.
- the larger the wear resistance ratio, the better the wear resistance, and the scope of the present invention was set to 4.0 or more.
- the test piece that has been ground from one side and reduced to a thickness of 25 mm is used.
- Table 2 shows the results of microstructure observation, tensile test, and wear test.
- Examples of the present invention (steel plate Nos. 1 to 6, steel plates No. 8, 9) have a tensile strength (TS) ⁇ 80 OMPa and a yield strength (YS) ⁇ 60 OMPa, It is a steel plate with excellent wear resistance.
- the Charpy absorbed energy was 27 J or more when the rolling finishing temperature was 900 ° C or lower.
- the comparative example is inferior in bending workability as compared with the present invention example, or even if the wear resistance is equivalent, YS and TS are high, so that the bending workability is inferior.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08764952.1A EP2154262B1 (en) | 2007-05-29 | 2008-05-26 | Abrasion-resistant steel sheet having excellent processability, and method for production thereof |
BRPI0812277-6A2A BRPI0812277A2 (pt) | 2007-05-29 | 2008-05-26 | Aço resistente à abrasão excelente em capacidade de conformação e seu método de produção. |
CN2008800161928A CN101688283B (zh) | 2007-05-29 | 2008-05-26 | 加工性优良的耐磨钢板及其制造方法 |
MX2009012820A MX2009012820A (es) | 2007-05-29 | 2008-05-26 | Acero resistente a la abrasion excelente en formabilidad y metodo de produccion del mismo. |
US12/600,891 US20100147424A1 (en) | 2007-05-29 | 2008-05-26 | Abrasion-resistant steel excellent in formability and production method thereof |
AU2008255706A AU2008255706B2 (en) | 2007-05-29 | 2008-05-26 | Abrasion resistant steel excellent in formability and production method thereof |
CA2685710A CA2685710C (en) | 2007-05-29 | 2008-05-26 | Abrasion resistant steel excellent in formability and production method thereof |
KR1020097021902A KR101165654B1 (ko) | 2007-05-29 | 2008-05-26 | 가공성이 우수한 내마모 강판 및 그 제조 방법 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007-142003 | 2007-05-29 | ||
JP2007142003 | 2007-05-29 | ||
JP2008113529A JP5380892B2 (ja) | 2007-05-29 | 2008-04-24 | 加工性に優れた耐磨耗鋼板およびその製造方法 |
JP2008-113529 | 2008-04-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2008146929A1 true WO2008146929A1 (ja) | 2008-12-04 |
WO2008146929A9 WO2008146929A9 (ja) | 2009-11-12 |
Family
ID=40075158
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2008/060096 WO2008146929A1 (ja) | 2007-05-29 | 2008-05-26 | 加工性に優れた耐磨耗鋼板およびその製造方法 |
Country Status (12)
Country | Link |
---|---|
US (1) | US20100147424A1 (ja) |
EP (1) | EP2154262B1 (ja) |
JP (1) | JP5380892B2 (ja) |
KR (1) | KR101165654B1 (ja) |
CN (1) | CN101688283B (ja) |
AU (1) | AU2008255706B2 (ja) |
BR (1) | BRPI0812277A2 (ja) |
CA (1) | CA2685710C (ja) |
CL (1) | CL2008001542A1 (ja) |
MX (1) | MX2009012820A (ja) |
PE (1) | PE20090342A1 (ja) |
WO (1) | WO2008146929A1 (ja) |
Families Citing this family (42)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5458624B2 (ja) * | 2009-03-25 | 2014-04-02 | Jfeスチール株式会社 | 加工性に優れた耐磨耗鋼板およびその製造方法 |
FR2960883B1 (fr) * | 2010-06-04 | 2012-07-13 | Vallourec Mannesmann Oil & Gas | Acier faiblement allie a limite d'elasticite elevee et haute resistance a la fissuration sous contrainte par les sulfures |
KR101253897B1 (ko) * | 2010-12-23 | 2013-04-16 | 주식회사 포스코 | 내마모성 및 내식성이 우수한 오일샌드 슬러리 파이프용 강판 및 그 제조방법 |
KR101271781B1 (ko) * | 2010-12-23 | 2013-06-07 | 주식회사 포스코 | 내마모성, 내식성 및 저온인성이 우수한 오일샌드 슬러리 파이프용 강판 및 그 제조방법 |
CN102296234A (zh) * | 2011-09-07 | 2011-12-28 | 柳州钢铁股份有限公司 | 耐磨钢板及其生产装置和生产方法 |
JP5375981B2 (ja) * | 2012-01-10 | 2013-12-25 | Jfeスチール株式会社 | 耐溶接割れ性に優れた耐摩耗溶接鋼管およびその製造方法 |
KR101382790B1 (ko) * | 2012-03-16 | 2014-04-08 | 주식회사 포스코 | 내침식성 및 저온충격인성이 우수한 오일샌드 슬러리 파이프용 강판 및 그 제조방법 |
KR101382833B1 (ko) * | 2012-03-16 | 2014-04-08 | 주식회사 포스코 | 내침식성이 우수한 오일샌드 슬러리 파이프용 강판 및 그 제조방법. |
KR101382675B1 (ko) | 2012-03-19 | 2014-04-07 | 주식회사 포스코 | 내마모성과 가공성이 우수한 저합금 열연 강판 및 그 제조방법 |
CN102876993A (zh) * | 2012-10-24 | 2013-01-16 | 章磊 | 一种高强度耐磨钢材料及其制作方法 |
KR101461741B1 (ko) * | 2012-12-21 | 2014-11-14 | 주식회사 포스코 | 충격인성이 우수한 강관용 후물 열연강판과 강관 및 이들의 제조방법 |
CN103898420A (zh) * | 2012-12-25 | 2014-07-02 | 隆英(金坛)特钢科技有限公司 | 耐磨钢板及其制造方法 |
CN103272851A (zh) * | 2013-05-20 | 2013-09-04 | 浙江朋诚科技有限公司 | 一种高速轧机辊箱 |
CN103272848B (zh) * | 2013-05-20 | 2015-12-02 | 浙江朋诚科技有限公司 | 一种高速轧机辊轴 |
CN103266270A (zh) * | 2013-05-23 | 2013-08-28 | 江苏久联冶金机械制造有限公司 | 含硼铁基耐磨材料 |
CN103409695B (zh) * | 2013-08-16 | 2015-04-08 | 洛阳钢丰机械制造有限公司 | 一种复合材料浇注铸造的挖斗和生产工艺及装置 |
CN103469077B (zh) * | 2013-09-30 | 2015-12-02 | 济钢集团有限公司 | 一种高硅轧制钢板及其制备工艺 |
CN104561823B (zh) * | 2013-10-09 | 2016-12-07 | 宝钢特钢有限公司 | 一种深冲用超高强度钢热轧钢板及制造方法 |
KR101828199B1 (ko) | 2014-01-28 | 2018-02-09 | 제이에프이 스틸 가부시키가이샤 | 내마모 강판 및 그 제조 방법 |
CN103882331A (zh) * | 2014-02-25 | 2014-06-25 | 南通东方科技有限公司 | 大型挖掘机用高强度、高耐磨支撑轮 |
KR101955839B1 (ko) * | 2014-10-17 | 2019-03-07 | 신닛테츠스미킨 카부시키카이샤 | 크랙킹 커넥팅 로드용 압연 강재 |
CN105779885B (zh) * | 2014-12-23 | 2018-03-27 | 上海梅山钢铁股份有限公司 | 一种具有良好加工性能的耐磨热轧薄钢板及其制造方法 |
CN105018848A (zh) * | 2015-08-05 | 2015-11-04 | 启东市佳宝金属制品有限公司 | 耐磨合金 |
CN105063497B (zh) * | 2015-09-17 | 2017-10-17 | 东北大学 | 一种高耐磨性能易加工低合金耐磨钢板及其制造方法 |
CN105349896B (zh) * | 2015-10-28 | 2017-03-22 | 安徽省三方新材料科技有限公司 | 一种低合金挖掘机斗齿的制备方法 |
CN105220077B (zh) * | 2015-11-11 | 2017-05-10 | 武汉钢铁(集团)公司 | 用于制造挖掘机挖斗的高表面质量热轧钢板及制造方法 |
CN105695861B (zh) * | 2016-04-22 | 2018-04-24 | 柳州凯通新材料科技有限公司 | 一种耐磨轧制复合钢板 |
CN105779895A (zh) * | 2016-04-22 | 2016-07-20 | 柳州凯通新材料科技有限公司 | 一种锰钨钛耐磨铸钢及其加工工艺 |
CN105671438B (zh) * | 2016-04-22 | 2018-06-29 | 柳州凯通新材料科技有限公司 | 一种锰钨钛合金钢及其加工工艺 |
CN105695878A (zh) * | 2016-04-22 | 2016-06-22 | 柳州凯通新材料科技有限公司 | 锰钨钛耐磨铸钢及其制备方法 |
CN108034940B (zh) * | 2017-11-24 | 2020-08-25 | 宁波祥福机械科技有限公司 | 一种涡轮增压转子轴及其制备方法 |
CN108588573A (zh) * | 2018-04-28 | 2018-09-28 | 江苏恒加机械工程有限公司 | 一种金属支架的生产工艺 |
CN109881120A (zh) * | 2019-03-15 | 2019-06-14 | 重庆明高机械制造有限公司 | 一种挖沙斗 |
CN110387499A (zh) * | 2019-06-27 | 2019-10-29 | 扬州市海纳源科技服务有限责任公司 | 一种混合低合金的金属材料及制备方法 |
CN112442635B (zh) * | 2020-11-13 | 2022-03-29 | 唐山钢铁集团高强汽车板有限公司 | 高性能800MPa级以上低合金高强钢板及其制备方法 |
CN112553543A (zh) * | 2020-11-30 | 2021-03-26 | 攀钢集团研究院有限公司 | 贝氏体基耐磨钢及其生产方法 |
CN112813362B (zh) * | 2020-12-14 | 2023-03-28 | 内蒙古科技大学 | 高强钢的制造方法及高强钢履带板 |
CN114774799B (zh) * | 2022-03-02 | 2023-04-18 | 河钢乐亭钢铁有限公司 | 一种农机用耐磨圆棒及其生产方法 |
CN114737136B (zh) * | 2022-03-30 | 2023-05-16 | 鞍钢股份有限公司 | 布氏硬度400hbw高强度、高韧性热连轧薄钢板的生产方法 |
CN115612923B (zh) * | 2022-09-13 | 2023-11-14 | 攀钢集团攀枝花钢铁研究院有限公司 | 一种成形及焊接性能良好的耐磨钢及其生产方法 |
CN115558864B (zh) * | 2022-10-19 | 2023-10-24 | 湖南华菱涟源钢铁有限公司 | 一种高强钢板及其制备方法 |
CN115838897A (zh) * | 2022-11-18 | 2023-03-24 | 莱芜钢铁集团银山型钢有限公司 | 一种415hb级泥沙输送管道用马氏体耐磨耐蚀钢管及其制备方法 |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62142726A (ja) | 1985-12-18 | 1987-06-26 | Kobe Steel Ltd | 溶接性の良好な耐摩耗用鋼板の製造法 |
JPS63169359A (ja) | 1986-12-29 | 1988-07-13 | Sumitomo Metal Ind Ltd | 高靭性耐摩耗厚鋼板 |
JPH01142023A (ja) | 1987-11-30 | 1989-06-02 | Kobe Steel Ltd | 曲げ加工性の良好な耐摩耗用鋼板の製造方法 |
JPH0441616A (ja) | 1990-06-06 | 1992-02-12 | Nkk Corp | 低硬度で且つ耐摩耗性および曲げ加工性に優れた耐摩耗鋼の製造方法 |
JPH04208058A (ja) * | 1990-11-30 | 1992-07-29 | Railway Technical Res Inst | 磁気浮上車両の推進装置 |
JPH04228536A (ja) * | 1990-06-06 | 1992-08-18 | Nkk Corp | 耐摩耗性に優れた鋼 |
JPH05239591A (ja) * | 1992-02-27 | 1993-09-17 | Nkk Corp | 耐摩耗性に優れた鋼 |
JPH06256896A (ja) * | 1993-03-09 | 1994-09-13 | Nkk Corp | 表面性状に優れた耐摩耗鋼及びその製造方法 |
JP2007197813A (ja) * | 2005-12-28 | 2007-08-09 | Jfe Steel Kk | 曲げ加工性に優れた耐摩耗鋼板 |
JP2008169443A (ja) * | 2007-01-12 | 2008-07-24 | Jfe Steel Kk | 加工性に優れた耐摩耗鋼板およびその製造方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5284529A (en) * | 1990-06-06 | 1994-02-08 | Nkk Corporation | Abrasion-resistant steel |
JPH04308058A (ja) * | 1991-04-02 | 1992-10-30 | Nkk Corp | 耐摩耗性に優れた鋼 |
JP4239257B2 (ja) * | 1998-11-02 | 2009-03-18 | Jfeスチール株式会社 | 耐リジング性に優れたTi含有フェライト系ステンレス鋼板の製造方法 |
JP3940301B2 (ja) * | 2002-02-27 | 2007-07-04 | 新日本製鐵株式会社 | 耐曲げ性に優れるブラスト用耐候性高強度鋼板およびその製造方法 |
FR2847272B1 (fr) * | 2002-11-19 | 2004-12-24 | Usinor | Procede pour fabriquer une tole en acier resistant a l'abrasion et tole obtenue |
JP4257539B2 (ja) * | 2003-09-01 | 2009-04-22 | 住友金属工業株式会社 | 軟窒化用非調質鋼 |
-
2008
- 2008-04-24 JP JP2008113529A patent/JP5380892B2/ja active Active
- 2008-05-26 KR KR1020097021902A patent/KR101165654B1/ko active IP Right Grant
- 2008-05-26 AU AU2008255706A patent/AU2008255706B2/en active Active
- 2008-05-26 MX MX2009012820A patent/MX2009012820A/es active IP Right Grant
- 2008-05-26 WO PCT/JP2008/060096 patent/WO2008146929A1/ja active Application Filing
- 2008-05-26 CA CA2685710A patent/CA2685710C/en active Active
- 2008-05-26 BR BRPI0812277-6A2A patent/BRPI0812277A2/pt not_active Application Discontinuation
- 2008-05-26 US US12/600,891 patent/US20100147424A1/en not_active Abandoned
- 2008-05-26 CN CN2008800161928A patent/CN101688283B/zh active Active
- 2008-05-26 EP EP08764952.1A patent/EP2154262B1/en active Active
- 2008-05-28 CL CL200801542A patent/CL2008001542A1/es unknown
- 2008-05-28 PE PE2008000905A patent/PE20090342A1/es active IP Right Grant
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62142726A (ja) | 1985-12-18 | 1987-06-26 | Kobe Steel Ltd | 溶接性の良好な耐摩耗用鋼板の製造法 |
JPS63169359A (ja) | 1986-12-29 | 1988-07-13 | Sumitomo Metal Ind Ltd | 高靭性耐摩耗厚鋼板 |
JPH01142023A (ja) | 1987-11-30 | 1989-06-02 | Kobe Steel Ltd | 曲げ加工性の良好な耐摩耗用鋼板の製造方法 |
JPH0441616A (ja) | 1990-06-06 | 1992-02-12 | Nkk Corp | 低硬度で且つ耐摩耗性および曲げ加工性に優れた耐摩耗鋼の製造方法 |
JPH04228536A (ja) * | 1990-06-06 | 1992-08-18 | Nkk Corp | 耐摩耗性に優れた鋼 |
JPH04208058A (ja) * | 1990-11-30 | 1992-07-29 | Railway Technical Res Inst | 磁気浮上車両の推進装置 |
JPH05239591A (ja) * | 1992-02-27 | 1993-09-17 | Nkk Corp | 耐摩耗性に優れた鋼 |
JPH06256896A (ja) * | 1993-03-09 | 1994-09-13 | Nkk Corp | 表面性状に優れた耐摩耗鋼及びその製造方法 |
JP3089882B2 (ja) | 1993-03-09 | 2000-09-18 | 日本鋼管株式会社 | 表面性状に優れた耐摩耗鋼及びその製造方法 |
JP2007197813A (ja) * | 2005-12-28 | 2007-08-09 | Jfe Steel Kk | 曲げ加工性に優れた耐摩耗鋼板 |
JP2008169443A (ja) * | 2007-01-12 | 2008-07-24 | Jfe Steel Kk | 加工性に優れた耐摩耗鋼板およびその製造方法 |
Also Published As
Publication number | Publication date |
---|---|
US20100147424A1 (en) | 2010-06-17 |
CA2685710A1 (en) | 2008-12-04 |
WO2008146929A9 (ja) | 2009-11-12 |
CL2008001542A1 (es) | 2008-09-05 |
BRPI0812277A2 (pt) | 2014-11-18 |
EP2154262B1 (en) | 2018-03-07 |
EP2154262A4 (en) | 2016-01-20 |
MX2009012820A (es) | 2009-12-15 |
JP5380892B2 (ja) | 2014-01-08 |
AU2008255706A1 (en) | 2008-12-04 |
KR20090123006A (ko) | 2009-12-01 |
CN101688283A (zh) | 2010-03-31 |
JP2009007665A (ja) | 2009-01-15 |
CA2685710C (en) | 2012-07-31 |
EP2154262A1 (en) | 2010-02-17 |
PE20090342A1 (es) | 2009-03-29 |
KR101165654B1 (ko) | 2012-07-16 |
AU2008255706B2 (en) | 2011-10-13 |
CN101688283B (zh) | 2012-02-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2008146929A1 (ja) | 加工性に優れた耐磨耗鋼板およびその製造方法 | |
JP5186809B2 (ja) | 加工性に優れた耐磨耗鋼板およびその製造方法 | |
JP4538094B2 (ja) | 高強度厚鋼板およびその製造方法 | |
JP6007847B2 (ja) | 低温靭性を有する耐磨耗厚鋼板およびその製造方法 | |
JP6235221B2 (ja) | 低温靭性および耐水素脆性を有する耐磨耗厚鋼板およびその製造方法 | |
KR100918321B1 (ko) | 내지연파괴특성이 우수한 고장력 강재 | |
JP4542624B2 (ja) | 高強度厚鋼板およびその製造方法 | |
JP4899874B2 (ja) | 加工性に優れた耐摩耗鋼板およびその製造方法 | |
JP6540764B2 (ja) | 耐摩耗鋼板およびその製造方法 | |
WO2014154106A1 (zh) | 一种低合金高硬度耐磨钢板及其制造方法 | |
JP5683327B2 (ja) | 低温靭性に優れた耐摩耗鋼板 | |
TWI742812B (zh) | 耐磨耗鋼板及其製造方法 | |
JP4735167B2 (ja) | 低温靭性に優れた耐摩耗鋼板の製造方法 | |
JP5458624B2 (ja) | 加工性に優れた耐磨耗鋼板およびその製造方法 | |
JP4735191B2 (ja) | 低温靭性に優れた耐摩耗鋼板およびその製造方法 | |
JP4650013B2 (ja) | 低温靱性に優れた耐摩耗鋼板およびその製造方法 | |
JP5217191B2 (ja) | 加工性に優れた耐磨耗鋼板およびその製造方法 | |
JP5348392B2 (ja) | 耐磨耗鋼 | |
JP4259145B2 (ja) | 低温靭性に優れた耐磨耗鋼板およびその製造方法 | |
JP5017937B2 (ja) | 曲げ加工性に優れた耐摩耗鋼板 | |
JP2007262429A (ja) | 曲げ加工性に優れた耐摩耗鋼板 | |
JP5794077B2 (ja) | 強度および靭性に優れた機械構造用鋼材およびその製造方法 | |
JP3443544B2 (ja) | 高強度析出硬化型マルテンサイト系ステンレス鋼 | |
JP2007277590A (ja) | 曲げ加工性に優れた耐摩耗鋼板 | |
JP2020193380A (ja) | 耐摩耗鋼板およびその製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200880016192.8 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 08764952 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2008255706 Country of ref document: AU Ref document number: 3531/KOLNP/2009 Country of ref document: IN |
|
ENP | Entry into the national phase |
Ref document number: 20097021902 Country of ref document: KR Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2685710 Country of ref document: CA |
|
ENP | Entry into the national phase |
Ref document number: 2008255706 Country of ref document: AU Date of ref document: 20080526 Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 12600891 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: MX/A/2009/012820 Country of ref document: MX |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2008764952 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
NENP | Non-entry into the national phase |
Ref country code: JP |
|
ENP | Entry into the national phase |
Ref document number: PI0812277 Country of ref document: BR Kind code of ref document: A2 Effective date: 20091130 |