CN104911504A - High-strength high-wear-resistance steel casting for super-huge type crusher and production process of steel casting - Google Patents
High-strength high-wear-resistance steel casting for super-huge type crusher and production process of steel casting Download PDFInfo
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Abstract
The invention discloses a high-strength high-wear-resistance steel casting for a super-huge type crusher. The high-strength high-wear-resistance steel casting is characterized by comprising the following chemical components in percentage by weight: 1.31%-1.40% of C, 0.50%-0.90% of Si, 17.5%-19.0% of Mn, P is less than or equal to 0.040, S is less than or equal to 0.020, 1.00%-1.40% of Cr, Ni is less than or equal to 0.60, Mo is less than or equal to 0.50, 0.005%-0.010% of B, 0.08%-0.12% of Al, 0.10%-0.18% of Ti, 0.05%-0.09% of La, 0.05%-0.10% of Ce, 0.05%-0.10% of V and the balance of Fe and unavoidable trace impurities. The invention further discloses a process for producing the high-strength high-wear-resistance steel casting. The high-strength high-wear-resistance steel casting is relatively good in tenacity and wear resistance, long in service life and applicable to the super-huge type crusher.
Description
Technical field
The present invention relates to a kind of steel casting and production technique thereof, specifically a kind of high strength height Wear Resistant Cast Steel for super-huge crusher and production technique thereof.
Background technology
Crusher is widely used in numerous departments such as mine, smelting, building materials, highway, railway, water conservancy and chemical industry.
Steel casting is the important component part in crusher.For liner plate; the effect of liner plate is protection cylindrical shell; cylindrical shell is made directly not to be subject to direct impact and the wearing and tearing of grinding element and material; it can also utilize its different operating surface to adjust the working order of grinding element; strengthen grinding day to the crushing effect of material; improve grinding efficiency, increase yield, reduce the loss of medium and liner plate.Super-huge crusher build is comparatively large, and it needs the more general crusher volume of liner plate of use larger, and its impact be subject to and friction are also larger, also more harsh to the requirement of liner plate and production technique thereof.Domestic existing liner plate generally adopts Mn13 and alloy steel material, but this kind of material is for the production of the liner plate on super-huge crusher, and easily occur cracking, its performance and used life is also not ideal enough.Due to super-huge crusher be often used to varying environment under carry out outdoor operation, therefore its liner plate is needed to adapt to carry out work under various different operating mode, wherein under the operating mode of low temperature, liner plate easily changes brittle state into by ductile states, its impact absorbing energy obviously declines, cause the impact toughness decreased of liner plate, cracky, thus affect the work of super-huge crusher.Therefore, need a kind of high wear-resistant steel casting of high strength used for super-huge crusher to meet industrial demand.
Summary of the invention
The invention provides a kind of high strength height Wear Resistant Cast Steel for super-huge crusher and production technique thereof, the steel casting that its object is to solve super-huge crusher is easy to crack, the problem such as poor impact toughness under worst cold case.
For a high strength height Wear Resistant Cast Steel for super-huge crusher, it is characterized in that, the weight percent of this steel casting chemical constitution is: C 1.31 ~ 1.40, Si 0.50 ~ 0.90, Mn 17.5 ~ 19.0, P≤0.040, S≤0.020, Cr 1.00 ~ 1.40, Ni≤0.60, Mo≤0.50, B 0.005 ~ 0.010, Al 0.08 ~ 0.12, Ti 0.10 ~ 0.18, La 0.05 ~ 0.09, Ce 0.05 ~ 0.10, V 0.05 ~ 0.10, all the other are Fe and inevitable trace impurity.
Further, described steel casting is liner plate.
For a production technique for the high strength height Wear Resistant Cast Steel of super-huge crusher, its step is as follows:
(1) melted after the low-carbon (LC) punching briquetting of steel cuttings, rustless stain and extra low carbon ferrochromium mixing by heating by electric cooker, form the molten steel of molten state;
(2) molten steel after melting is added in AOD refining furnace carry out refining;
(3) ferrosilicon is added in the molten steel after refining and electrolytic manganese carries out melting;
(4) foundry returns of the same trade mark added after rust cleaning carries out melting, and after molten steel melting, sampling spectrograph does Chemical bath deposition;
(5) for the result after Chemical bath deposition, alloy ingredient fine setting is carried out to molten steel; The alloy baking to 180 added ~ 220 DEG C add again;
(6) adjusting component qualified after, cut off furnace power, add deslagging agent and carry out removing the gred to liquid steel level inclusion-free, closed furnace power;
(7) after furnace temperature being risen to 1450 ~ 1500 DEG C, first add fine aluminium deoxidation and carry out the first step deoxidation, then add siliceous, calcium, barium and aluminium composite deoxidant and carry out second step deoxidation; Carry out induction stirring after 4 ~ 5 minutes until electric furnace, insert apparatus for determination of oxygen probe, to measure in molten steel oxygen level PPM value whether in prescribed value, come out of the stove after the assay was approved;
(8) by ladle baking to 900 ~ 1000 DEG C, inclusion is aglow;
(9) ferrotianium, ferro-boron, nickel plate, molybdenum-iron, vanadium iron and mixed rare earth of lanthanum and cerium are broken into the particle that granularity is below 5mm, and dry by the temperature not higher than 200 DEG C, oven dry is placed on ladle bottom, again calcium, silicon, manganese composite deoxidant being placed in Ladle Bottom, with pouring method in bag, compound modification treatment and final deoxygenation process being carried out to molten steel;
(10) at ladle bottom access argon gas pipeline, ladle argon-blown is carried out, Argon pressure >=0.1MPa, argon blowing time >=5 minute;
(11) toast sand mold with industrial air heater, use sand mold casting steel casting, teeming temperature is 1430 ~ 1450 DEG C;
(12), after pouring into a mould 1h, foundary weight is removed; Sandbox is unpacked after being incubated 3 days, below air cooling steel casting to 300 DEG C, and cut mechanically dead head, cleaning undesirable root, overlap, burr etc.;
(13) steel casting quenches at 900 ~ 1050 DEG C, insulation 5 ~ 7h, hardening immediately after coming out of the stove, and the hardening timed interval is less than 90s, reheats to 200 ~ 250 DEG C of tempering, insulation 3 ~ 8h, and stove is chilled to that to be less than 150 DEG C of laggard line spaces cold.
The present invention is a kind of high strength height Wear Resistant Cast Steel, be applicable to, in super-huge crusher, there is good toughness and wear resistance, the work-ing life of described steel casting is 2 to 3 times of existing steel casting, steel casting life cycle can be extended, reduce and change number of times, greatly reduce costs, meanwhile, the working efficiency of super-huge crusher can be improved.
In steel casting of the present invention, Fe content is much higher than traditional steel casting, improves austenitic stability, stops the precipitation of carbide, and then can improve intensity and the plasticity of steel casting, improve its work hardening capacity and wear resistance.Except being added with the elements such as appropriate Si, Cr, B, Al, La, Ce in steel casting of the present invention, also add a small amount of Ti, Ni, Mo, V tetra-kinds of metallic elements.Wherein Ti has crystal grain thinning and improves the effect of mechanical property; Ni can suppress carbon precipitation from austenite, reduces grain boundary carbide and separates out tendency, significantly reduces intergranular carbide quantity, and can improve the cryogenic mechanics performance of steel casting, also have the ability of the antioxidant property improving product; Mo can suppress cementite to be assembled effectively, the carbide of Mo with superfine small size Dispersed precipitate in austenite, pass through dispersion-strengthened action, strengthening austenite structure, the intensity of steel casting and hardness are increased, strain-hardening performance enhancement, thus improve fastness to wear, and the sucking-off of acicular carbide in austenite can be suppressed; And V in steel by being formed containing V carbonitride, at austenite grain boundary Precipitation, can austenitic recrystallize be suppressed and stop growing up of crystal grain, thus playing crystal grain thinning, thus the impelling strength of steel casting under worst cold case can be improved further.The consumption of Ti, Ni, Mo, V tetra-kinds of metallic elements is few, to ensure to produce high performance product under lower production cost.
In order to produce above-mentioned high strength height Wear Resistant Cast Steel, present invention also offers the production technique after a kind of improvement, adopt this production technique can produce the larger steel casting of build, ensure that it is for having good mechanical property and longer work-ing life in super-huge crusher, not easy to crack, this production technique is compared with traditional steel casting production technology, have the following advantages: (1) adopts steel cuttings, the low-carbon (LC) punching briquetting of rustless stain and with the foundry returns of the trade mark as raw material, production cost is greatly reduced under the prerequisite ensureing quality product, Appropriate application waste resource, energy-conserving and environment-protective.During melting, add the foundry returns of bulk after first the raw materializations such as steel cuttings is clear again, to make foundry returns be able to melting quickly in molten steel, thus enhance productivity.(2) adopt AOD refining furnace to carry out refining to molten steel, to make in firm water the impurity such as P, S reduce, thus promote Molten Steel Cleanliness.(3) stokehold fast component analysis and Determination of octafluoropropane content is carried out, up to standard at the molten steel of coming out of the stove, to ensure the performance of product.(4) Argon is carried out to ladle bottom, impurity and argon gas are rolled and takes out of, thus make molten steel purer.(5) carry out three deoxidation treatment, make the abundant deoxidation of molten steel, thus improving product performance.(6) pour into a mould after 1 hour, remove foundary weight, in case the generation of crack arrest line, reduce deflation resistance.(7) adopt electrolytic manganese to replace ferromanganese to add in molten steel, to improve the purity of manganese, thus promote the mechanical property of steel casting, make it to be applied to better in super-huge crusher.(8) melted alloy material require heat, and argon gas heat absorption during Argon, therefore ladle needs first through high bake, makes inclusion aglow, to ensure enough abundant liquid steel temperature, makes molten steel have suitable teeming temperature.(9) before cast, with industrial air heater, sand mold is toasted, in order to avoid the sand mold moisture absorption and the product air holes that causes is many, thus greatly reduce fraction defective.
Embodiment
Below in conjunction with specific embodiment, the present invention will be further elaborated.
Embodiment one
For the production technique of the high strength height Wear Resistant Cast Steel of super-huge crusher, its step is as follows:
(1) adopt the intermediate frequency furnace melting of the neutral sand furnace lining of band, melted after the low-carbon (LC) punching briquetting of steel cuttings, rustless stain and extra low carbon ferrochromium mixing by intermediate frequency heating, form the molten steel of molten state.
(2) molten steel after melting is added in AOD refining furnace carry out refining.
(3) ferrosilicon is added in the molten steel after refining and electrolytic manganese carries out melting.
(4) foundry returns of the same trade mark added after rust cleaning carries out melting, and after molten steel melting, sampling spectrograph does Chemical bath deposition.
(5) for the result after Chemical bath deposition, alloy ingredient fine setting is carried out to molten steel; The alloy baking to 200 DEG C added adds again.
(6) adjusting component qualified after, cut off intermediate frequency furnace power supply, add deslagging agent and carry out removing the gred to liquid steel level inclusion-free, closed intermediate frequency furnace power supply.
(7) after intermediate frequency furnace temperature being risen to 1500 DEG C, first add fine aluminium deoxidation and carry out the first step deoxidation, then add siliceous, calcium, barium and aluminium composite deoxidant and carry out second step deoxidation; Carry out induction stirring after 4 minutes until intermediate frequency furnace, insert apparatus for determination of oxygen probe, measure oxygen level in molten steel, oxygen level is come out of the stove after being less than 8ppm.
(8) by ladle baking to 900 DEG C, inclusion is aglow.
(9) ferrotianium, ferro-boron, nickel plate, molybdenum-iron, vanadium iron and mixed rare earth of lanthanum and cerium are broken into the particle that granularity is below 5mm, be convenient to dry and melting, and with 150 DEG C of oven dry, oven dry is placed on ladle bottom, again calcium, silicon, manganese composite deoxidant being placed in Ladle Bottom, with pouring method in bag, compound modification treatment and final deoxygenation process being carried out to molten steel.
(10) at ladle bottom access argon gas pipeline, carry out ladle argon-blown, blow 10 minutes with the argon gas of pressure >=0.1MPa.
(11) toast sand mold with industrial air heater, use sand mold casting steel casting, teeming temperature is 1433 DEG C.
(12), after pouring into a mould 1h, foundary weight is removed; Sandbox is unpacked after being incubated 3 days, below air cooling steel casting to 300 DEG C, and cut mechanically dead head, cleaning undesirable root, overlap, burr etc.
(13) steel casting quenches at 1000 DEG C, insulation 7h, hardening immediately after coming out of the stove, and the hardening timed interval is 60s, reheats to 200 DEG C of tempering, insulation 3h, and stove is chilled to that to be less than 150 DEG C of laggard line spaces cold.
The chemical composition of the steel casting obtained by above-mentioned production technique is as shown in following table (table 1):
Table 1 is for the chemical composition analysis table of the high strength height Wear Resistant Cast Steel of super-huge crusher
The mechanical property of this steel casting is obtained as shown in following table (table 2) by test:
Table 2 is for the Mechanics Performance Testing table of the high strength height Wear Resistant Cast Steel of super-huge crusher
| Tensile strength (MPa) | Yield strength (MPa) | Impelling strength (J/cm 2） | Hardness (HBS) |
| 1651 | 927 | 83 | 350 |
Embodiment two
For the production technique of the high strength height Wear Resistant Cast Steel of super-huge crusher, its step is as follows:
(1) adopt the intermediate frequency furnace melting of the neutral sand furnace lining of band, melted after the low-carbon (LC) punching briquetting of steel cuttings, rustless stain and extra low carbon ferrochromium mixing by intermediate frequency heating, form the molten steel of molten state.
(2) molten steel after melting is added in AOD refining furnace carry out refining.
(3) ferrosilicon is added in the molten steel after refining and electrolytic manganese carries out melting.
(4) foundry returns of the same trade mark added after rust cleaning carries out melting, and after molten steel melting, sampling spectrograph does Chemical bath deposition.
(5) for the result after Chemical bath deposition, alloy ingredient fine setting is carried out to molten steel; The alloy baking to 200 DEG C added adds again.
(6) adjusting component qualified after, cut off intermediate frequency furnace power supply, add deslagging agent and carry out removing the gred to liquid steel level inclusion-free, closed intermediate frequency furnace power supply.
(7) after intermediate frequency furnace temperature being risen to 1450 DEG C, first add fine aluminium deoxidation and carry out the first step deoxidation, then add siliceous, calcium, barium and aluminium composite deoxidant and carry out second step deoxidation; Carry out induction stirring after 4 minutes until intermediate frequency furnace, insert apparatus for determination of oxygen probe, measure oxygen level in molten steel, oxygen level is come out of the stove after being less than 8ppm.
(8) by ladle baking to 950 DEG C, inclusion is aglow.
(9) ferrotianium, ferro-boron, nickel plate, molybdenum-iron, vanadium iron and mixed rare earth of lanthanum and cerium are broken into the particle that granularity is below 5mm, be convenient to dry and melting, and with 150 DEG C of oven dry, oven dry is placed on ladle bottom, again calcium, silicon, manganese composite deoxidant being placed in Ladle Bottom, with pouring method in bag, compound modification treatment and final deoxygenation process being carried out to molten steel.
(10) at ladle bottom access argon gas pipeline, carry out ladle argon-blown, blow 10 minutes with the argon gas of pressure >=0.1MPa.
(11) toast sand mold with industrial air heater, use sand mold casting steel casting, teeming temperature is 1438 DEG C.
(12), after pouring into a mould 1h, foundary weight is removed; Sandbox is unpacked after being incubated 3 days, below air cooling steel casting to 300 DEG C, and cut mechanically dead head, cleaning undesirable root, overlap, burr etc.
(13) steel casting quenches at 1050 DEG C, insulation 5h, hardening immediately after coming out of the stove, and the hardening timed interval is 60s, reheats to 225 DEG C of tempering, insulation 4h, and stove is chilled to that to be less than 150 DEG C of laggard line spaces cold.
The chemical composition of the steel casting obtained by above-mentioned production technique is as shown in following table (table 3):
Table 3 is for the chemical composition analysis table of the high strength height Wear Resistant Cast Steel of super-huge crusher
The mechanical property of this steel casting is obtained as shown in following table (table 4) by test:
Table 4 is for the Mechanics Performance Testing table of the high strength height Wear Resistant Cast Steel of super-huge crusher
| Tensile strength (MPa) | Yield strength (MPa) | Impelling strength (J/cm 2） | Hardness (HBS) |
| 1589 | 910 | 73 | 349 |
Embodiment three
For the production technique of the high strength height Wear Resistant Cast Steel of super-huge crusher, its step is as follows:
(1) adopt the intermediate frequency furnace melting of the neutral sand furnace lining of band, melted after the low-carbon (LC) punching briquetting of steel cuttings, rustless stain and extra low carbon ferrochromium mixing by intermediate frequency heating, form the molten steel of molten state.
(2) molten steel after melting is added in AOD refining furnace carry out refining.
(3) ferrosilicon is added in the molten steel after refining and electrolytic manganese carries out melting.
(4) foundry returns of the same trade mark added after rust cleaning carries out melting, and after molten steel melting, sampling spectrograph does Chemical bath deposition.
(5) for the result after Chemical bath deposition, alloy ingredient fine setting is carried out to molten steel; The alloy baking to 200 DEG C added adds again.
(6) adjusting component qualified after, cut off intermediate frequency furnace power supply, add deslagging agent and carry out removing the gred to liquid steel level inclusion-free, closed intermediate frequency furnace power supply.
(7) after intermediate frequency furnace temperature being risen to 1450 DEG C, first add fine aluminium deoxidation and carry out the first step deoxidation, then add siliceous, calcium, barium and aluminium composite deoxidant and carry out second step deoxidation; Carry out induction stirring after 4 minutes until intermediate frequency furnace, insert apparatus for determination of oxygen probe, measure oxygen level in molten steel, oxygen level is come out of the stove after being less than 8ppm.
(8) by ladle baking to 950 DEG C, inclusion is aglow.
(9) ferrotianium, ferro-boron, nickel plate, molybdenum-iron, vanadium iron and mixed rare earth of lanthanum and cerium are broken into the particle that granularity is below 5mm, be convenient to dry and melting, and with 150 DEG C of oven dry, oven dry is placed on ladle bottom, again calcium, silicon, manganese composite deoxidant being placed in Ladle Bottom, with pouring method in bag, compound modification treatment and final deoxygenation process being carried out to molten steel.
(10) at ladle bottom access argon gas pipeline, carry out ladle argon-blown, blow 10 minutes with the argon gas of pressure >=0.1MPa.
(11) toast sand mold with industrial air heater, use sand mold casting steel casting, teeming temperature is 1440 DEG C.
(12), after pouring into a mould 1h, foundary weight is removed; Sandbox is unpacked after being incubated 3 days, below air cooling steel casting to 300 DEG C, and cut mechanically dead head, cleaning undesirable root, overlap, burr etc.
(13) steel casting quenches at 1050 DEG C, insulation 5h, hardening immediately after coming out of the stove, and the hardening timed interval is 60s, reheats to 225 DEG C of tempering, insulation 4h, and stove is chilled to that to be less than 150 DEG C of laggard line spaces cold.
The chemical composition of the steel casting obtained by above-mentioned production technique is as shown in following table (table 5):
Table 5 is for the chemical composition analysis table of the high strength height Wear Resistant Cast Steel of super-huge crusher
The mechanical property of this steel casting is obtained as shown in following table (table 6) by test:
Table 6 is for the Mechanics Performance Testing table of the high strength height Wear Resistant Cast Steel of super-huge crusher
| Tensile strength (MPa) | Yield strength (MPa) | Impelling strength (J/cm 2） | Hardness (HBS) |
| 1604 | 925 | 88 | 350 |
The data of mechanical of comprehensive three embodiments is known, by to the chemical composition of steel casting and the improvement of production technique, make it have good tensile strength, yield strength, impelling strength and hardness, especially, tensile strength can reach 1589 ~ 1651MPa, make it not easy to crack, hardness reaches 349 ~ 350HBS, makes steel casting have good wear resistance.
In addition, for liner plate, use test is carried out to described steel casting of the present invention, the enterprising enforcement of the super-huge cone crusher liner plate adopting composition of the present invention and production technique to produce and conventional straps being installed on same model is respectively used, result shows, liner plate of the present invention can use and reach more than 600 hours.And the work-ing life of conventional straps is 200 ~ 300 hours.Illustrate compared with conventional straps, the liner plate described in the present invention has longer work-ing life.Adopt liner plate of the present invention, liner plate life cycle can be extended, reduce and change number of times, greatly reduce costs.
Above are only the specific embodiment of the present invention, but design concept of the present invention is not limited thereto, all changes utilizing this design the present invention to be carried out to unsubstantiality, all should belong to the behavior of invading scope.
Claims (5)
1. for the high strength height Wear Resistant Cast Steel of super-huge crusher, it is characterized in that, the weight percent of this steel casting chemical constitution is: C 1.31 ~ 1.40, Si 0.50 ~ 0.90, Mn 17.5 ~ 19.0, P≤0.040, S≤0.020, Cr 1.00 ~ 1.40, Ni≤0.60, Mo≤0.50, B 0.005 ~ 0.010, Al 0.08 ~ 0.12, Ti 0.10 ~ 0.18, La 0.05 ~ 0.09, Ce 0.05 ~ 0.10, V 0.05 ~ 0.10, all the other are Fe and inevitable trace impurity.
2., as claimed in claim 1 for the high strength height Wear Resistant Cast Steel of super-huge crusher, it is characterized in that: described steel casting is liner plate.
3. produce a technique for the high strength height Wear Resistant Cast Steel described in claim 1, its step is as follows:
(1) melted after the low-carbon (LC) punching briquetting of steel cuttings, rustless stain and extra low carbon ferrochromium mixing by heating by electric cooker, form the molten steel of molten state;
(2) molten steel after melting is added in AOD refining furnace carry out refining;
(3) ferrosilicon is added in the molten steel after refining and electrolytic manganese carries out melting;
(4) foundry returns of the same trade mark added after rust cleaning carries out melting, and after molten steel melting, sampling spectrograph does Chemical bath deposition;
(5) for the result after Chemical bath deposition, alloy ingredient fine setting is carried out to molten steel; The alloy material added is baked to 180 ~ 220 DEG C and adds;
(6) adjusting component qualified after, cut off furnace power, add deslagging agent and carry out removing the gred to liquid steel level inclusion-free, closed furnace power;
(7), after furnace temperature being risen to 1450 ~ 1500 DEG C, two step deoxidations are carried out; Carry out induction stirring after 4 ~ 5 minutes until electric furnace, insert apparatus for determination of oxygen probe, to measure in molten steel oxygen level PPM value whether in prescribed value, come out of the stove after the assay was approved;
(8) by ladle baking to 900 ~ 1000 DEG C, inclusion is aglow;
(9) ferrotianium, ferro-boron, nickel plate, molybdenum-iron, vanadium iron and mixed rare earth of lanthanum and cerium are broken into the particle that granularity is below 5mm, and dry by the temperature not higher than 200 DEG C, oven dry is placed on ladle bottom, again calcium, silicon, manganese composite deoxidant being placed in Ladle Bottom, with pouring method in bag, compound modification treatment and final deoxygenation process being carried out to molten steel;
(10) at ladle bottom access argon gas pipeline, ladle argon-blown is carried out, Argon pressure >=0.1MPa, argon blowing time >=5 minute;
(11) use sand mold casting steel casting, teeming temperature is 1430 ~ 1450 DEG C;
(12), after pouring into a mould 1h, foundary weight is removed; Sandbox is unpacked after being incubated 3 days, below air cooling steel casting to 300 DEG C, and cut mechanically dead head, cleaning undesirable root, overlap, burr etc.;
(13) steel casting quenches at 900 ~ 1050 DEG C, insulation 5 ~ 7h, hardening immediately after coming out of the stove, and the hardening timed interval is less than 90s, reheats to 200 ~ 250 DEG C of tempering, insulation 3 ~ 8h, and stove is chilled to that to be less than 150 DEG C of laggard line spaces cold.
4. the production technique of high strength height Wear Resistant Cast Steel as claimed in claim 2, it is characterized in that: described in step (7), the step of two step deoxidations is, first add fine aluminium deoxidation and carry out the first step deoxidation, then add siliceous, calcium, barium and aluminium composite deoxidant and carry out second step deoxidation.
5. the production technique of high strength height Wear Resistant Cast Steel as claimed in claim 2, is characterized in that: first toast sand mold with industrial air heater before sand mold casting steel casting in step (11).
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| CN105420600A (en) * | 2015-11-12 | 2016-03-23 | 山东一品矿山机械制造有限公司 | Cone crusher lining plate |
| CN105543706A (en) * | 2016-01-25 | 2016-05-04 | 太原理工大学 | High-strength high-toughness abrasion-resistant cast steel material and preparation method thereof |
| CN105838848A (en) * | 2016-04-06 | 2016-08-10 | 广东省材料与加工研究所 | Preparation method of high manganese steel |
| WO2018018389A1 (en) * | 2016-07-25 | 2018-02-01 | 顾湘 | High-strength microalloyed rare-earth cast steel |
| CN110883317A (en) * | 2019-11-25 | 2020-03-17 | 衡阳市鑫诚和重型机械设备制造有限公司 | Casting process of reinforced steel plate of hopper of mine dump truck |
| CN113278883A (en) * | 2021-04-28 | 2021-08-20 | 张选 | Rare earth wear-resistant ultrahigh manganese steel for toothed plate of double-toothed roller screening coal crusher and manufacturing method thereof |
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| CN105420600A (en) * | 2015-11-12 | 2016-03-23 | 山东一品矿山机械制造有限公司 | Cone crusher lining plate |
| CN105543706A (en) * | 2016-01-25 | 2016-05-04 | 太原理工大学 | High-strength high-toughness abrasion-resistant cast steel material and preparation method thereof |
| CN105838848A (en) * | 2016-04-06 | 2016-08-10 | 广东省材料与加工研究所 | Preparation method of high manganese steel |
| CN105838848B (en) * | 2016-04-06 | 2017-12-29 | 广东省材料与加工研究所 | A kind of preparation method of potassium steel |
| WO2018018389A1 (en) * | 2016-07-25 | 2018-02-01 | 顾湘 | High-strength microalloyed rare-earth cast steel |
| CN110883317A (en) * | 2019-11-25 | 2020-03-17 | 衡阳市鑫诚和重型机械设备制造有限公司 | Casting process of reinforced steel plate of hopper of mine dump truck |
| CN113278883A (en) * | 2021-04-28 | 2021-08-20 | 张选 | Rare earth wear-resistant ultrahigh manganese steel for toothed plate of double-toothed roller screening coal crusher and manufacturing method thereof |
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| CN104911504B (en) | 2017-02-22 |
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