95results about How to "Crack suppression" patented technology

The invention relates to the technical field of welding materials, in particular to a high-efficiency deposited nickel-based welding wire capable of preventing welding cracks based on phase regulation and application of the high-efficiency deposited nickel-based welding wire, and the nickel-based welding wire comprises the following chemical components in percentage by weight: less than or equal to 0.03% of C, 0.10-0.20% of Si, 2.9-3.2% of Mn, and 1t of P; 0.005%, S: lt; 0.003% of Cu, 19.7-20.5% of Cr, less than or equal to 0.04% of Co, and 1t of Cu; the Ni-based alloy comprises the following components in percentage by weight: 0.10% of Ni, 0.3-0.6% of Ti, 0.4-2.0% of Fe, 2.1-2.9% of Nb, less than or equal to 0.3% of Mo, less than or equal to 0.01% of N, less than or equal to 0.005% of O, less than or equal to 0.50% of other impurity elements and the balance of Ni. The specific value of Ti to Nb is controlled to be 0.10-0.22, the specific value of C to Nb + Ti is controlled to be 0.012 or below, appropriate morphology and distribution of (Nb, Ti) C type intergranular precipitates are obtained, precipitation of grain boundary M23C6 is reduced, and the creep resistance and high-temperature deplasticity crack resistance of the material are effectively optimized.

The utility model provides a turning and spraying synchronous forming cutter bar, and relates to the technical field of turning and thermal spraying. The turning and spraying synchronous forming cutter bar comprises a turning tool assembly, a powder spraying assembly and a powder supply assembly. The turning tool assembly comprises a turning tool blade and a turning tool bar. The turning tool bar is provided with a first end capable of installing the turning tool blade and a second end far away from the turning tool blade. The powder spraying assembly comprises a spraying head arranged at the first end in a swinging mode, a rotating gear arranged on the turning tool bar in a rotating mode and a rotary knob. The spray head is provided with a spherical gear part used for being meshed with the rotating gear. The knob is connected to the rotating gear and used for driving the rotating gear to rotate so as to drive the nozzle to swing. The powder supply assembly comprises a main box body connected to the spray head through a pipeline, a powder conveying pipeline connected to the interior of the main box body and used for bearing powder, a heater connected to the powder conveying pipeline and a powder feeding barrel connected to the main box body and used for supplying powder to the powder conveying pipeline.

The invention relates to the technical field of building materials, and provides a preparation method of a functional fiber modifier, the modifier and application of the modifier in precast concrete.The method comprises the steps that S1, a calcium raw material is added into water to be stirred and mixed, sealed standing and aging are conducted for 20-48 h, a mixed solution is obtained, and the temperature of the water is controlled to range from 80 DEG C to 100 DEG C; s2, adding a siliceous raw material and a structure-directing agent into the mixed solution, uniformly mixing, and adding into a reaction kettle; s3, the temperature of the reaction kettle is controlled to rise, meanwhile, the stirring rotating speed is controlled to be 200-400 rpm, when the temperature rises to 180-220 DEG C, the stirring rotating speed is controlled to be 50-70 rpm, and heat preservation is conducted for a reaction; s4, after the reaction is finished, cooling, taking out slurry, filtering and drying to obtain functional fibers; and S5, dispersing the reinforcing agent in water, adding the functional fibers, and stirring for reaction to obtain the functional fiber modifier. According to the technical scheme of the invention, the functional fiber modifier has obvious rapid hardening and early strength effects, has no adverse effect on concrete performance, and can realize energy saving and steam curing-free and rapid demolding to improve the template turnover rate.

The invention belongs to the technical field of high-temperature alloy precision casting, and particularly relates to a high-porosity ceramic crucible with a large-particle skeleton structure and a preparation method. According to the method, a traditional crucible forming method is abandoned, a framework made of a large-particle material is firstly constructed, then gaps between the frameworks are accurately filled with a specific filling material, and therefore forming of the crucible is completed. Wherein the framework material comprises the following raw materials in parts by weight: 50-65 parts of 3-5mm white corundum, 30-45 parts of 1-3mm white corundum, 3-4.5 parts of gel powder, 0.5-2 parts of high-alumina cement and 5-8 parts of additional water; the filling material comprises the following raw materials in parts by weight: 20-45 parts of 0-120-mesh white corundum, 25-35 parts of alpha-alumina powder, 30-40 parts of silica sol and 0.5-1 part of an external surfactant. The basic strength of the crucible is stabilized, and the thermal shock resistance of the crucible is remarkably enhanced by optimizing the internal pore structure of the crucible.

The invention relates to the technical field of building materials, and particularly discloses a light-weight high-strength low-carbon cement-based material for 3D printing and a preparation method of the light-weight high-strength low-carbon cement-based material. The 3D printing lightweight high-strength low-carbon cement-based material is prepared from the following raw materials in parts by weight: 50 to 70 parts of modified sintered mullite, 5 to 8 parts of mineral admixture, 8 to 12 parts of coral aggregate, 8 to 10 parts of zeolite, 60 to 80 parts of cement, 10 to 20 parts of clay and 60 to 75 parts of nano bubble water, and the modified sintered mullite is obtained by wrapping and modifying a hydrophobic material; the preparation method comprises the following steps: after weighing the raw materials, stirring and mixing the modified sintered mullite, the mineral admixture, the coral aggregate, the zeolite, the cement and the clay to obtain a mixture; nano bubble water is added into the mixture for secondary stirring, and the 3D printing light-weight high-strength low-carbon cement-based material is obtained. The composition provided by the invention can be used for preparing a cement-based material by a 3D printing technology, and has the advantages of high compressive strength and good durability.

The invention discloses a double-beam laser assisted cold spraying aluminum alloy defective part high-performance repairing method which comprises the following steps: firstly, preprocessing an aluminum alloy defective part to obtain a preprocessed aluminum alloy defective part; secondly, cold spraying repairing treatment is conducted on the preprocessed aluminum alloy defect part, meanwhile, low-power-density laser is emitted to the preprocessed aluminum alloy defect part to assist in cold spraying repairing, and therefore initial repairing aluminum alloy is obtained; then, high-power-density laser is used for conducting micro-scale laser shock peening treatment on the aluminum alloy, and the pre-repaired aluminum alloy is obtained; and then, the laser-assisted cold spraying treatment and the laser shock peening treatment flow are repeated until repairing is completed, and at the moment, repairing of the aluminum alloy defective part can be completed. On the basis of a cold spraying technology, two laser beams with different powers are carried, compared with a traditional technology, the repairing effect can be improved, heat influence on components is avoided, and therefore the method is very suitable for in-situ repairing of the aviation aluminum alloy.

This invention discloses a black-based blue-spotted glaze with an earthworm-like pattern and its preparation method. The glaze consists of a body, a black base glaze, and a blue-spotted glaze from the inside out. The raw materials for the black base glaze are: feldspar, calcite, calcium borate, dolomite, talc, barium carbonate, quartz, bentonite, zirconium silicate, rutile, cobalt oxide, manganese oxide, and iron oxide. The raw materials for the blue-spotted glaze are: feldspar, limestone, alumina, talc, barium sulfate, Datong clay, zinc oxide, quartz, and titanium dioxide. The preparation method includes: 1. Wet ball milling the black base glaze raw materials to obtain a black base glaze slurry; 2. Wet ball milling the blue-spotted glaze raw materials to obtain a blue-spotted glaze slurry; 3. Bisque firing the body; 4. Applying the black base glaze slurry to the body and drying it; 5. Applying the blue-spotted glaze slurry to the body and drying it; 6. Oxidation firing and reduction firing of the body, followed by natural cooling to obtain the black-based blue-spotted glaze. The raw material formula of this invention is reasonable and environmentally friendly, which can improve the mechanical properties of the glaze; the preparation method is simple and the yield is high.

A coil component, a circuit board, and an electronic device are provided. A coil component of one embodiment includes a magnetic core including a plurality of ferrite crystal grains and a plurality of Bi-segregation regions existing at grain boundaries of the plurality of ferrite crystal grains, and a winding wound around the magnetic core. In one embodiment, a plurality of line profiles obtained by detecting the content of Bi along a plurality of scan lines intersecting the grain boundaries includes at least one first line profile including a detected peak of Bi at the grain boundary, and a plurality of second line profiles not including the detected peak.

Provided is a method for manufacturing a group III nitride single crystal substrate, which can shorten the manufacturing time of a device and can suppress cracks and deterioration in characteristics during the manufacturing of the device. The method for manufacturing a group III nitride single crystal substrate includes performing the following: a support substrate preparation step of preparing a support substrate including a nitride ceramic; a planarization layer forming step of providing a planarization layer on the upper surface of the support substrate; a seed layer forming step of providing a seed layer on the upper surface of the planarization layer; an epitaxial film formation step for forming a composite substrate by epitaxially growing a target group III nitride single crystal on the upper surface of the seed layer; and a separation step of removing at least one of the planarization layer and the seed layer to separate the group III nitride single crystal substrate made of the group III nitride single crystal from the remainder of the composite substrate.

The invention discloses a water-based polymer emulsion stabilized fiber aeolian sand macadam base material and a preparation method, and belongs to the technical field of pavement building materials, the water-based polymer emulsion stabilized fiber aeolian sand macadam base material comprises a base material, a water-based polymer and basalt fiber; the base material comprises the following components in percentage by mass: 60-70% of graded broken stone; 30% to 40% of aeolian sand; by taking the mass of the base material as a standard, the coating also comprises 0.4-1% of water-based polymer emulsion; 1%-2% of basalt fiber; the water-based polymer emulsion stabilized fiber aeolian sand macadam base material has good mechanical properties, stability and durability, solves the problems of reflection cracks, ruts and other diseases of a traditional semi-rigid base, and prolongs the service life of a pavement.

The invention discloses a method for improving the structure and performance of a 6063 aluminum alloy formed through selective laser melting, and belongs to the technical field of selective laser melting. Titanium powder and zirconium hydride in a certain proportion are selected as doping agents, the doping agents are evenly mixed with 6063 aluminum alloy powder through a ball milling method, and then drying and dehumidification are conducted; and the mixed alloy powder is put into selected-area laser melting equipment, manufacturing is carried out on the surface of a base material under inert gas protection, and the 6063 aluminum alloy is obtained after laser, scanning, powder laying and deposition. According to the method, the microstructure and the mechanical property of the selective laser melting forming 6063 aluminum alloy are obviously improved, so that the selective laser melting forming 6063 aluminum alloy meets the industrial performance requirement of SLM, and good market competitiveness is achieved.

Provided is a secondary battery capable of suppressing the occurrence of wrinkles and cracks in a protective layer. The lithium ion secondary battery is characterized in that the positive electrode comprises a positive electrode core material and a positive electrode mixture layer arranged on the positive electrode core material, one side end part of the positive electrode core material is provided with a positive electrode core material exposed part in which the positive electrode mixture layer is not arranged, and a protective layer containing a water-insoluble polymer and an inorganic filler is arranged on the positive electrode core material exposed part. The protective layer has: a first protective layer disposed in a region facing the negative electrode with a separator interposed therebetween in the exposed positive electrode core part; and a second protective layer disposed in a region of the exposed portion of the positive electrode core material that is farther from the positive electrode mixture layer than in a region in which the first protective layer is disposed, the mass ratio of the inorganic filler in the first protective layer being greater than the mass ratio of the inorganic filler in the second protective layer. The mass ratio of the water-insoluble polymer in the second protective layer is greater than the mass ratio of the water-insoluble polymer in the first protective layer.

A polyimide resin powder is provided, which is a polyimide resin powder containing a tetracarboxylic acid component and a diamine component. The tetracarboxylic acid component includes 3,3',4,4'-biphenyltetracarboxylic acid dianhydride and 2,3,3',4'-biphenyltetracarboxylic acid dianhydride. The diamine component includes p-phenylenediamine, m-phenylenediamine and / or 4,4'-diaminodiphenyl ether. Based on the total molar amount of the diamine component, the content of p-phenylenediamine is 70 mol% to 98 mol%, and based on the total molar amount of the diamine component, the combined content of m-phenylenediamine and 4,4'-diaminodiphenyl ether is 2 mol% to 30 mol%.

The application discloses a shrinkage-compensating concrete containing acid-free weak base expandable graphite and a preparation method thereof. The concrete comprises cement 200-500 parts, mineral admixtures 50-200 parts, fine aggregate 600-800 parts, coarse aggregate 1000-1300 parts, water 120-200 parts, additive 5-15 parts and acid-free weak base low-temperature expandable graphite 15-75 parts. The expansion trigger temperature of the graphite is 90-100 DEG C, and the pH value is 6.0-8.0. The method comprises the following steps: firstly, uniformly mixing and stirring cement, mineral admixtures, fine aggregate, coarse aggregate and acid-free weak base low-temperature expandable graphite to obtain dry mixture B; secondly, mixing water and additive and adding the mixture into the dry mixture B to uniformly stir to obtain a concrete mixture; and thirdly, forming the concrete mixture, carrying out steam curing after final setting, naturally cooling to room temperature and obtaining the shrinkage-compensating concrete. Therefore, the concrete self-shrinkage can be precisely and efficiently compensated in the steam curing process of the concrete.

The present invention relates to a transmission V-belt, which is a transmission V-belt comprising a cured form of a first rubber composition, wherein the first rubber composition comprises a polymer component (A) containing an ethylene-α-olefin elastomer, a crosslinking agent (B) containing a sulfur-based crosslinking agent, and short fibers (C), wherein the short fibers (C) are oriented along the belt width direction, the rubber hardness (JIS-A) of the cured form is 91 degrees or more, and the elongation at break of the cured form in the belt length direction is 100% or more.

The invention relates to the technical field of aluminum alloys, in particular to a large-specification 7-series aluminum alloy and a casting method thereof. The casting method comprises the following steps that electrolytic aluminum water or an aluminum ingot is adopted as a raw material, smelting treatment, semi-continuous casting treatment and homogenizing annealing heat treatment are conducted in sequence, and the large-specification 7-series aluminum alloy is obtained; dry well casting is adopted during the semi-continuous casting treatment. Dry well casting is adopted during semi-continuous casting treatment, cooling stress is prevented from being generated, and cracks are restrained; and homogenizing annealing heat treatment is carried out after semi-continuous casting treatment, casting stress can be eliminated, cast ingot cracking is further avoided, and semi-continuous casting of the large-specification 7-series aluminum alloy is achieved.

The invention provides a preparation method of a composite patterned substrate, the composite patterned substrate and an LED chip, and the method comprises the steps: forming a plurality of holes in the surface of a sapphire substrate, and carrying out the gluing, exposure and development processing, and obtaining a preset pattern; depositing a SiOF layer on the substrate; removing the preset pattern below the SiOF layer through heat treatment to form a cavity; transferring a pattern on the substrate through a nanoimprint technology; and performing inductively coupled plasma etching to form a composite pattern structure. A cavity structure is formed in a sapphire substrate through laser drilling and heat treatment, the light extraction efficiency of an LED is improved by combining with a composite pattern constructed by a nanoimprint technology and utilizing a multi-interface light scattering effect, the propagation direction of light rays can be guided by combining a patterned structure with a cavity, light emitting angle distribution is optimized, and light emitting is more uniform or the directivity is more concentrated; epitaxial growth stress is released through the cavity, dislocation density is reduced, epitaxial layer cracks are effectively inhibited, and crystal integrity is improved.

The present invention is a method for manufacturing an AlN substrate, comprising: a brittle processing step (S10) for reducing the strength of a SiC base substrate (10); and a crystal growth step (S20) for forming an AlN layer (20) on the SiC base substrate (10). Further, the present invention is a method for suppressing generation of cracks in an AlN layer (20), comprising: a brittle processing step (S10) for reducing the strength of a SiC base substrate (10) before forming the AlN layer (20) on the SiC base substrate (10).

The invention discloses a non-contact welding method for diamond and quartz glass. The non-contact welding method comprises the steps that a diamond composite sheet and a quartz glass sheet are subjected to ultrasonic cleaning and blow-drying; naturally stacking the quartz glass sheets on the diamond compact to form non-contact assembly; transmitting femtosecond laser, focusing the femtosecond laser on the interface of the quartz glass sheet and the diamond compact, and welding along the outer edge of the quartz glass sheet to form a welding sample; the welding sample is placed in an annealing furnace to be subjected to annealing treatment; carrying out welding strength test on the annealed welding sample to obtain shear strength; in the whole welding process, femtosecond laser welding has extremely high peak power and extremely short energy deposition time, a heat affected zone can be controlled at the micro-nano scale, and generation of thermal stress and cracks is effectively restrained; an efficient and reliable method is provided for micro-nano connection of superhard heterogeneous materials, and high-strength welding of the diamond sheet and the quartz glass sheet under the non-clamping and non-contact conditions is achieved.

The invention provides a power semiconductor module which is not provided with a base plate serving as a supporting part of an insulating substrate and a heat radiator, and can effectively inhibit the crack of the insulating substrate, which is easily generated when the sealing resin is cooled and solidified, in the resin sealing type power semiconductor module. In a resin-sealed power semiconductor module having no support member for an insulating substrate, the resin-sealed power semiconductor module is characterized by being provided with: an insulating substrate; a first conductor layer pattern disposed on the insulating substrate; a second conductor layer pattern disposed on the insulating substrate and electrically insulated from the first conductor layer pattern; a third conductor layer pattern disposed on the insulating substrate and electrically insulated from the first conductor layer pattern and the second conductor layer pattern; a first semiconductor chip group having one or more semiconductor chips bonded to the first conductor layer pattern; a second semiconductor chip group having one or more semiconductor chips bonded to the second conductor layer pattern; a first lead frame that electrically connects the second conductor layer pattern and the side of the first semiconductor chip group opposite to the joining surface of the first conductor layer pattern; and a second lead frame that electrically connects the third conductor layer pattern and the side of the second semiconductor chip group that is opposite the joining surface with the second conductor layer pattern, the first lead frame and the second lead frame being disposed so as to respectively span a slit between the first conductor layer pattern and the second conductor layer pattern. The lead frame is disposed so as to be one layer in a direction perpendicular to the surface on which the conductor layer patterns of the insulating substrate are disposed.

The subject of the present invention is to provide an integrated passive component which is not prone to cracks caused by thermal stress and can suppress the degradation of the characteristics of the passive circuit. A capacitor is arranged on an insulating substrate. An inductor including a conductor pattern having at least one end connected to the capacitor is also arranged on the substrate. The capacitor has a dielectric film mainly including the same constituent elements as the substrate, and at least two electrodes facing each other with the dielectric film sandwiched therebetween.

A positive electrode for a lithium secondary battery according to an embodiment of the present invention may comprise: a positive electrode current collector; a first positive electrode active material layer formed on the positive electrode current collector and including a first positive electrode active material and a first positive electrode conductive material; and a second positive electrode active material layer formed on the first positive electrode active material layer and including a second positive electrode active material having an average particle diameter larger than that of the first positive electrode active material and a second positive electrode conductive material, a content of the first positive electrode conductive material in a total weight of the first positive electrode active material layer may be greater than a content of the second positive electrode conductive material in a total weight of the second positive electrode active material layer.

This invention belongs to the field of metallurgical technology, specifically relating to a high-strength, earthquake-resistant, and Cu-containing steel bar conforming to Korean standards, its preparation method, and its applications. The elemental composition of this steel bar, by mass percentage, is: C: 0.32%~0.37%, Si: 0.20%~0.30%, Mn: 1.65%~1.80%, P: 0.01%~0.02%, S: 0.01%~0.02%, V: 0.15%~0.16%, Nb: 0.015%~0.02%, Cu: 0.20%~0.25%, with the balance being Fe and unavoidable impurities. Through improvements in the elemental composition and technological advancements such as low superheat, weak secondary cooling water flow, and lower drawing speed, this steel bar achieves excellent compressive strength, yield strength, earthquake resistance, and corrosion resistance, making it suitable for use in environments with high earthquake resistance requirements or in corrosive conditions such as coastal areas.

The invention provides a laser powder bed melting anti-crack nickel-based superalloy and a preparation method thereof.The alloy is prepared from the following powder raw materials through a laser powder bed melting technology, and the powder raw materials comprise, by mass, 95%-96% of IN738LC alloy powder and 4%-5% of CoCrW alloy powder. The preparation method of the alloy comprises the steps that IN738LC alloy powder and CoCrW alloy powder are evenly mixed according to the proportion, and mixed powder is obtained; and placing the mixed powder in laser powder bed melting equipment, and forming under the protection of inert gas to obtain the laser powder bed melting crack-resistant nickel-based superalloy. According to the method, the alloy components and the solidification behavior are regulated and controlled, the liquidation crack sensitivity is remarkably reduced, and crack-free and high-density forming of the alloy can be achieved.

Provided is a method for manufacturing a polarizing plate in which the occurrence of cracks is suppressed in a thermal shock test in which a low-temperature (-40 DEG C) condition and a high-temperature (85 DEG C) condition are repeated, and in which deiodination does not occur in a region including an end portion. This method for manufacturing a polarizing plate comprises: a first lamination step in which an optical film is bonded to at least one side of a polarizer having a thickness of 15 [mu] m or less to produce a first laminate; and a humidification treatment step in which the first laminate is held in a gas phase at a temperature of 35 DEG C or higher and a relative humidity of 75% RH or higher.

The invention belongs to the technical field of concrete, and discloses concrete capable of inhibiting concrete cracks, which is prepared from the following raw materials in parts by weight: 300 to 500 parts of composite cement, 1000 to 1200 parts of high-temperature-resistant aggregate, 500 to 550 parts of fine aggregate, 35 to 55 parts of anti-crack fiber, 3 to 5 parts of expanding agent, 3 to 5 parts of polymer emulsion, 100 to 150 parts of mineral powder, 5 to 7 parts of air entraining agent and 1 to 3 parts of high-efficiency water reducing agent. According to the invention, the composite cement is prepared by taking ordinary Portland cement as a base material and adding the Al2O3 cement, so that the high temperature resistance of the composite cement is enhanced; the strength and the stability of the concrete are maintained, meanwhile, the volume expansion caused by high temperature or the strength loss caused by too fast cement hydration reaction is reduced, the generation of cracks is further inhibited, and finally, the evaporation speed of water can be reduced through the use of the polymer emulsion and the air entraining agent; therefore, shrinkage cracks caused by too fast water loss are reduced, and the strength of the concrete is effectively improved.

This invention relates to an embedded, transparent protective structure resistant to repeated impacts. It comprises a transparent ceramic curved armor plate, a transparent fiber-reinforced skeleton, a polycarbonate curved backplate, an epoxy resin coating, and an STF shear-thickening coating. The polycarbonate curved backplate has a central groove with a concave bottom. Each polygonal unit of the transparent fiber-reinforced skeleton contains a transparent ceramic curved armor plate. The gaps between the transparent ceramic curved armor plates and the transparent fiber-reinforced skeleton are filled with the STF shear-thickening coating. The bottom of the overall structure formed by the transparent ceramic curved armor plates, the transparent fiber-reinforced skeleton, and the STF shear-thickening coating is a convex curved surface, and the upper part of the overall structure is also a convex curved surface coated with an epoxy resin coating. This invention uses segmented, interlocking fibers in the armor plates to inhibit the propagation of crack damage, ensuring that the protective capabilities and visibility of other areas are not affected after an impact. Combined with the function of the curved structure, the overall structure is embedded in the curved backplate, forming an embedded structure.

A lighting device according to an embodiment of the present invention comprises: a support plate; the circuit board is arranged on the supporting plate; the plurality of bonding pads are arranged on one side of the circuit board; a light source portion disposed on the support plate and having a light emitting device and a plurality of bond pads; a plurality of connection members connecting the plurality of pads to the plurality of bond pads, respectively; and a plurality of molded portions covering different regions of at least one of the plurality of connecting members, in which an uppermost end of at least one of the plurality of molded portions may be disposed at a position higher than a highest point of the plurality of connecting members with respect to an upper surface of the circuit board.

The present invention provides a fixing member for cutting an electronic component blank and a cutting method, which suppress cracks generated when the electronic component blank is cut with a cutting knife. The fixing member (10) for the electronic component blank comprises a substrate (1) and a restraining material layer (2) arranged on a first main surface (1a) of the substrate (1) and fixing the electronic component blank (20) placed thereon. The Young's modulus of the restraining material layer (2) in a direction parallel to the first main surface (1a) of the substrate (1) is greater than 0.12 GPa and less than 10 GPa.

The present invention provides a wiring substrate capable of suppressing warpage even when reflow processing is performed, and also capable of suppressing the occurrence of cracks in a cured product layer provided so as to cover a portion of a wiring layer. A wiring substrate is provided with a substrate, a wiring layer provided on at least one main surface of the substrate, a cured product layer provided so as to cover a part of the wiring layer, and a reinforcing member provided on the cured product layer with an adhesive layer interposed therebetween, and is characterized in that: the thickness of the reinforcing member is less than the thickness of the wiring layer; the reinforcing member has a rectangular shape provided with an opening exposing a semiconductor element mounting region, and satisfies the following relationship: Mst > Msr > Mad, where Msr (MPa) is the elastic modulus of the cured product layer, Mad (MPa) is the elastic modulus of the adhesive layer, and Mst (MPa) is the elastic modulus of the reinforcing member under a temperature condition of 25 DEG C. The semiconductor device is characterized in that the reinforcing member has a rectangular shape provided with an opening exposing the semiconductor element mounting region, and when Msr (MPa) is the elastic modulus of the cured product layer, Mad (MPa) is the elastic modulus of the adhesive layer, and Mst (MPa) is the elastic modulus of the reinforcing member.