40results about How to "Resistant to deformation" patented technology

The invention relates to a device for transmitting a torque from a belt pulley (6) to a hub (10) of a group to be driven, especially a compressor (4), for example an air-conditioning compressor of a motor vehicle. The inventive device comprises a vibration damping element (12) arranged between the belt pulley (6) and the hub (10). According to the invention, the vibration damping element (12) is connected to the hub (10) in a fixed manner on the inner periphery thereof, and is engaged with the belt pulley (6) in a positively locking manner on the outer periphery thereof.

The present invention relates to a sound attenuation stud. The stud includes two engagement portions for engaging within a building element. The stud also includes two sound attenuation formations located between the engagement portions. Each sound attenuation formation includes a first portion relative to which second and third portions extend. Preferably, each portion is either parallel or orthogonal with all the other portions.

The invention relates to an interface mortar for steel structure exterior walls with an anti-corrosion coating. The interface mortar includes cement, sand, redispersible latex powder, water-repellent agent, defoamer and cellulose ether, the weight of each component For example: 200-700 parts of cement, 200-800 parts of sand, 30-120 parts of redispersible latex powder, 0.3-3.0 parts of water repellent, 0.1-2.0 parts of defoamer, and 0.2-2.5 parts of cellulose ether. Its beneficial effect is: the interface mortar provided by the invention can effectively guarantee the bonding with the surface of the steel structure base layer with an anti-corrosion coating, and has a good relationship with plastering materials such as thermal insulation mortar, bonding mortar, plastering mortar, and waterproof mortar. Being bonded, compared with the interface mortar used for traditional concrete and masonry base, the interface mortar has better affinity with the surface of the steel structure with anti-corrosion coating, high tensile bond strength, and also has good bonded properties performance, and less decrease in tensile bond strength after water immersion, freeze-thaw and heat treatment, has good durability, and can meet the requirements of the use environment of steel structure exterior walls with anti-corrosion coatings.

A liquid crystal polyester amide of the present invention includes 10 mol % to 65 mol % of a structural unit represented by the following formula (1), 3 mol % to 17.5 mol % of a structural unit represented by the following formula (2), 5 mol % to 20 mol % of a structural unit represented by the following formula (3), 7.5 mol % to 42 mol % in total of at least one of a structural unit represented by the following formula (4-1) and a structural unit represented by the following formula (4-2), and 2.5 mol % to 40 mol % in total of at least one of a structural unit represented by the following formula (5-1) and a structural unit represented by the following formula (5-2), and has a melting point of 300° C. or higher.

The invention relates to an interface agent for steel structure interior walls with an anti-corrosion coating, comprising the following raw materials in parts by weight: 200-600 parts of cement, 200-800 parts of sand, 30-100 parts of redispersible latex powder, and cellulose ether 0.5-3.0 parts, triethanolamine 0.05-0.30 parts. The beneficial effect is: the interface agent can improve the bonding performance between the steel structure with anti-corrosion coating and the plastering mortar; and the interface agent has better affinity with the steel structure with anti-corrosion coating, and the bonding strength is higher; Cement and redispersible latex powder form a composite cementitious material system. Cement is used for rapid hydration at the initial stage to provide initial bond strength. Redispersible latex powder is emulsified into a film after contacting with water, and forms a hydration product with cement. The interpenetrating network structure forms good bonding performance and certain deformation resistance on the steel structure with anti-corrosion coating; cellulose ether can improve the construction and water retention performance of the interface agent, and assist the improvement of the bonding performance of the interface agent Effect; triethanolamine can accelerate the strength growth rate and improve the bonding performance of the interface agent.

A cylindrical vessel made of carbon is used in the production of silicon. The inner surface of the vessel comes into contact with a silicon melt, wherein the permeation with silicon melt is reduced, formation of SiC is suppressed, and the vessel is resistant to deformation even when volumetric expansion ascribable to silicon is brought about. The carbon-made cylindrical vessel is made of a carbon material having a bulk specific gravity of 1.8 or more. The thermal expansion coefficient of the carbon material at 350 to 450° C. is preferably 3.5×10−6 / ° C. to 6.0×10−6 / ° C. A process for producing silicon uses said vessel wherein a chlorosilane is reacted with hydrogen.

The invention relates to the field of automatic target recognition of images, in particular to a mine target recognition method of sonar images. The invention includes proposing an active contour model constrained by a hyperellipse, an active contour model constrained by a multiphase level set, and a sonar image mine target recognition method based on the active contour model. Compared with the general target recognition method, the present invention has the advantages that it can still meet the requirement of identifying the mine target in the noisy sonar image, and can still obtain the accurate outline of the mine target under the condition that the image of the mine target is blurred.