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JP7171892B2 |
A sealed compressor includes a compression mechanism part compressing a refrigerant in a sealed container. The compression mechanism part includes a first member and a second member sliding with each other. The first member is a substrat...
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JP7158615B1 |
An object of the present invention is to provide a method for producing non-magnetic, excellent castability and machinability, and high strength spheroidal graphite cast iron. [Solution] By weight %, C: 2.7 to 3.5%, Si: 2.1 to 5.0%, Mn: ...
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JP7158312B2 |
To provide: a roll outer layer material for hot-rolling excellent in surface quality without having structure segregation and excellent in roll characteristics; a composite roll for hot-rolling; and a method for manufacturing the roll ou...
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JP2022154321A |
To provide a spheroidal graphite cast iron having high fatigue strength and excellent machinability.A spheroidal graphite cast iron contains 3.5-4.2 mass% of C, 2.0-3.3 mass% of Si, 0.8 mass% or less of Mn, 0.1 mass% or less of P, 0.02 m...
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JP2022149444A |
To provide a cast iron pipe that does not cause a coating defect in an inner surface treatment process, at low cost.The cast iron pipe includes: a graphite layer 2 that contains spheroidized graphite 4; and a decarburized layer 3 that is...
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JP2022541319A |
The present invention is a gray cast iron comprising carbon, silicon, vanadium, manganese, nickel, chromium, molybdenum, copper, sulfur, phosphorus, tin and titanium, wherein the weight percent of carbon is 3.70 to 3.90 percent and the w...
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JP7136037B2 |
To provide a hot-rolling roll outer layer material having abrasion resistance similar to that of a conventional material, and excellent in accident resistance, and a hot-rolling compound roll.A hot-rolling roll outer layer material conta...
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JP7109226B2 |
To provide a novel and useful austenitic spheroidal graphite cast iron excellent in corrosion resistance, and a manufacturing method therefor.The spheroidal graphite cast iron is an austenitic spheroidal graphite cast iron containing C:2...
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JP7103348B2 |
Provided is a black heart malleable cast iron and a method for manufacturing the same which can significantly shorten the time required for graphitization, as compared with the prior art. The black heart malleable cast iron includes a ma...
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JP7092943B2 |
There is provided a centrifugally cast composite roll for rolling having excellent wear resistance and surface deterioration resistance at levels of a high-speed steel cast iron roll and having rolling incident resistance at a level of a...
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JP7051730B2 |
To provide a method for producing a spheroidal graphite cast iron product, capable of obtaining the spheroidal graphite cast iron product excellent in resistance to oxidation at high temperature.A spheroidal graphite cast iron product, t...
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JP7049244B2 |
Disclosed herein are embodiments of non-magnetic, strong carbide forming alloys. In particular, the alloys can be advantageously used for powder manufacturing. Embodiments of the disclosure can have low FCC-BCC transition temperatures in...
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JP7048820B2 |
There is provided a centrifugally cast composite roll for rolling having excellent wear resistance and surface deterioration resistance at levels of a high-speed steel cast iron roll and having rolling incident resistance at a level of a...
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JP7036119B2 |
A composite roll for rolling comprising an outer layer and an inner layer integrally fused to each other; the outer layer being made of an Fe-based alloy comprising by mass 1-3% of C, 0.3-3% of Si, 0.1-3% of Mn, 0.1-5% of Ni, 1-7% of Cr,...
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JP2022039437A |
To provide a powder high-speed steel having improved wear resistance without significantly impairing its toughness.A powder high-speed steel is composed of an Fe-based alloy containing C: 1.2 mass% or more and 2.4 mass% or less, Si: 0.1 ...
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JP6998015B2 |
For the purpose of providing a method of die cast product of spheroidal graphite cast iron and a die cast product of spheroidal graphite cast iron having the number of spherical graphites of 3000/mm2 or more in an as cast state, there is...
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JP6990351B2 |
To provide a method of accurately estimating a hardness of a casting of nodular graphite cast iron by simulation.A method of estimating a hardness of a casting of nodular graphite cast iron comprises an element creating step (S1) that cr...
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JP6977738B2 |
A composite roll for rolling comprising an outer layer and an inner layer integrally fused to each other; the outer layer being made of an Fe-based alloy comprising by mass 1-3% of C, 0.3-3% of Si, 0.1-3% of Mn, 0.1-5% of Ni, 1-7% of Cr,...
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JP6963576B2 |
To provide a cast iron member having improved corrosion resistance to corrosion such as sulfuric acid occurring in an EGR system.A cast iron member contains carbon of 2.9 mass%-3.7 mass%, silicon of 1.8 mass%-2.8 mass%, manganese of 0.5 ...
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JP6954846B2 |
A spheroidal graphite cast iron having an excellent impact strength at low temperature and a method for producing the same are provided. The present disclosure relates to the spheroidal graphite cast iron comprising: C: 3.5 mass % to 4.2...
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JP6951949B2 |
Provided is a cast iron material from which excellent friction characteristics can be obtained. Provided is the cast iron material containing C and Fe as a composition, and further containing Cr as the composition in 1.0 to 3.5% in terms...
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JP6948556B2 |
To provide a centrifugal casting hot-rolling compound roll capable of reducing local abrasion of the outer layer and having an outer layer excellent in abrasion resistance, and a manufacturing method thereof.A centrifugal casting hot-rol...
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JP2021147695A |
To provide a spheroidal graphite cast iron that has high strength and less likely to crack at weld zone.A ferritic spheroidal graphite cast iron is a ferritic spheroidal cast iron containing C: 3.0 to 3.6 mass%, Si: 4.0 to 5.0 mass%, Mg:...
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JP6932737B2 |
Provided is a spheroidal graphite cast iron having high strength, high ductility, and high tenacity, particularly a spheroidal graphite cast iron having high strength with a high tensile strength of 700 MPa or more, exhibiting an elongat...
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JP6908021B2 |
An outer layer of a rolling roll having a chemical composition comprising by mass 1.3-2.8% of C, 0.3-1.8% of Si, 0.3-2.5% of Mn, 0-6.5% of Ni, 1-10% of Cr, 0.9-6% of Mo, 0-8% of W, 0.5-6% of V, 0-3% of Nb, and 0% or more and less than 0....
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JP2021098895A |
To provide a spheroidal graphite cast iron which can achieve both strength and machinability.A spheroidal graphite cast iron contains, by mass%, 3.0-4.0% C, 1.5-3.0% Si, 1.0% or less Mn, 0.10% or less P, 0.020% or less S, 1.0% or less Cu...
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JP2021071166A |
To provide a gear of high bearing pressure fatigue strength.A gear has tooth portions composed of a base material, and hard layers formed on at least tooth faces of the tooth portions. The hard layer is composed of high speed tool steel ...
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JP6866958B2 |
To provide a composite hot-rolling roll and an outer layer material for a hot-rolling roll that have a wear resistance and fatigue resistance comparable to or higher than those of the related art and in which porosities and shrinkage cav...
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JP2021055146A |
To provide a spheroidal graphite cast iron showing high tensile strength even when there is a decrease in teeming temperature when molten cast iron is poured into a cast.A spheroidal graphite cast iron has C: 3.5-4.2 mass%, Si: 2.0-2.8 m...
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JP6855864B2 |
To provide a mold for press of a titanium plate which prevents press cracks and seizure marks, and causes less wear.A mold for press includes a base material and a surface-treated film, where the surface-treated film is made of a CrN fil...
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JP6840696B2 |
To provide a compound roll for rolling having an outer layer in which segregation of MC type carbide is suppressed and a crystallizing black lead amount is adjusted, and therefore being superior in wear resistance, surface roughness resi...
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JP6838603B2 |
A spheroidal graphite cast iron meeting N (5-) ¥ 250, N( 5-20 )/N (5-) ¥ 0.6, and N (30-) /N (5-) ¤ 0.2, wherein N (5-) represents the number (/mm 2 ) of graphite particles having equivalent-circle diameters of 5 µm or more, N ...
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JP2021017601A |
To provide a spheroidal graphite cast iron material that does not prevent an increase of a surface roughness after cutting without increasing the production cost.A spheroidal graphite cast iron material contains Fe, C and Si and the Si c...
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JP2021011637A |
To provide an improved cold work tool steel.A steel comprises following main components (in wt.%): C 2.2-2.4, Si 0.1-0.55, Mn 0.2-0.8, Cr 4.4-5.1, Mo 3.3-3.9, V 7.6-8.4, balance consisting of optional elements, iron and impurities.SELECT...
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JP6825928B2 |
To provide a disc rotor capable of inhibiting reduction of brake component performance such as hardness or frictional property even though rust prevention is added, while maintaining lasting rust prevention by adding rust prevention to a...
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JP6793541B2 |
To provide a spheroidal graphite cast iron tube capable of maintaining hardness in a high temperature range.A spheroidal graphite cast iron tube is constituted, in which molten metal contains, by wt.%, C:3.20 to 4.00%, Si:1.40 to 3.00%, ...
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JP2020164917A |
To provide a cast iron material having low friction coefficient and excellent toughness.A cast iron material according to the present embodiment has a chemical composition containing, by mass%, C:2.4 to 3.3%, Si:2.0% or smaller, and Mn:0...
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JP6763377B2 |
A black heart malleable cast iron including carbon of not lower than 2.0% and not higher than 3.4%; silicon of not lower than 0% and not higher than 1.4%; aluminum of not lower than 2.0% and not higher than 6.0%, which are all expressed ...
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JP2020523479A |
The present specification discloses embodiments of non-magnetic iron-based alloys. The alloy may contain a high hard phase fraction, providing significant toughness and wear resistance. In some embodiments, the alloy may have a high aust...
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JP6728150B2 |
A method for treating molten cast iron includes, performing an inoculation treatment to the molten cast iron, with the use of an inoculant containing: 15 to 80 wt % Si; either 80 to 100 wt % purity La or 80 to 100 wt % purity Ce as RE; C...
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JP6712316B2 |
The present invention relates to an alloy cast iron, and a piston ring containing the same, the alloy cast iron including: a pearlite matrix; and a graphite structure and a steadite-type eutectic structure which are precipitated in the p...
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JP6702266B2 |
To provide a compound roll for hot rolling particularly excellent in wear resistance and thermal fatigue characteristic and furthermore having no segregation of carbides even when producing by an economically-excellent centrifugal castin...
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JP2020066772A |
To provide a spheroidal graphite cast iron showing more excellent strength and ductility than an existing spheroidal graphite cast iron by improving the ratio in an elemental composition to be blended with the spheroidal graphite cast ir...
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JP6678426B2 |
To provide heat-resistant wear-resistant cast iron having sufficient hardness and strength in a high temperature range.The heat-resistant wear-resistant cast iron comprises, in mass%, C: 0.8-1.6%, Si: 1.0% or less (including 0%), Mn: 1.0...
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JP6670779B2 |
To provide a spheroidal graphite cast iron that has high-temperature strength and oxidation resistance improved compared to the conventional high-SiMo spheroidal graphite cast iron, and has excellent ductility in the middle temperature r...
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JP6669109B2 |
To provide a roll outer layer material for hot rolling which has an excellent rough surface resistance in such a manner that an abrasion resistance is assured and a crack depth of a roll surface and pit-like defects are reduced, and a co...
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JP2020002402A |
To provide nodular graphite cast iron that achieves both of excellent tensile strength and elongation properties.The nodular graphite cast iron has a composition consisting of C: 3.0-4.0 mass%, Si: 4.0-4.5 mass%, Mn: 0.20-0.40 mass%, Cu:...
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JP2019218607A |
To provide a titanium tube forming roll excellent in cohesion resistance, wear resistance, peeling resistance and the friction coefficient of the roll surface.The titanium tube forming roll comprises: a base material having a steel compo...
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JP2019536891A |
The present invention refers to a vermicula cast iron alloy specifically designed for internal combustion engine blocks and heads with special requirements for mechanical strength and fatigue strength. Vermicula iron alloys with high mec...
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JP6606977B2 |
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