64results about How to "Different hardness" patented technology

A golf club head having a multi-material face. The golf club head has a hard, wear resistant material as the ball-impacting face surface coupled to a softer material, allowing the multi-material face to be joined to a soft body material such that the body can be bent and customized. The multi-material face allows for improved playing characteristics by allowing the club designer to use a thinner face and lighter body material while still providing improved face wear resistance and durability.

A method for manufacturing a PU (polyurethane) polishing pad is provided. Resins containing active hydrogen functional groups such as polyol resins, polyamine resins, and polythiol resins, and polyisocyanate resins containing -NCO functional groups are mixed to form a foamed PU polishing pad with excellent polishing properties by reaction injection-molding under high pressure, low temperature and auxiliary gas-adding. The PU polishing pad in accompany with an abrasive slurry can be widely used to polish high-level products such as wafers and optical glass.

The present invention is recovery process and application of silicone rubber and the recovered silicone rubber is reused as stuffing. The recovery process includes three steps: the crushing of waste silicone rubber, the pugging of waste silicone rubber, and throwing the recovered silicone rubber in the forming of silicone rubber product. The surface of the product with recovered silicone rubber particles has different elasticity, hardness and elongation, and thus special anti-sliding, anti-stick and other effects. The recovery process may be used in manufacturing bathing cap, carpet, foot padin automobile, swimming fins, etc.

This invention involves a non-eutectic structure welded joint of copper-aluminum thin wall pipe and its manufacturing method. This welded joint includes a chemical bond directly formed between the cone welding section of the copper pipe and the inner wall of the aluminum pipe, to form a columnar grain crystal with a toothed profile. The method includes providing a metal rod in a nosing end of copper pipe welded part, and installing a felder at the corresponding position of fixed electrode group. During welding, a pushing cylinder pushes the travelling electrode group with copper pipe to the aluminum pipe. At the same time a circuit is connected/powered, so the copper-aluminum combined zone is heated by electric resistance heating. The copper pipe moves to the interior of aluminum pipe continuously at the role of the pushing cylinder. The cooled metal rod is drawn out after power-down. The chemical bond directly forms in copper-aluminum joint. The weld does not have eutectic structure. The weld of copper-aluminum joint has characters of high strength and good sealability, thus this joint is appropriate for large-scale use in refrigerating industry.

The invention provides light-cured organic silicon resin. The light-cured organic silicon resin is prepared by performing cohydrolysis-polycondensation reaction on at least one of siloxane containingalkyl and siloxane containing aryl as well as siloxane containing epoxy group and siloxane containing unsaturated double bond under the action of a catalyst. Epoxy functional group and unsaturated double bond group in the light-cured organic silicon resin, serving as special functional groups, improve the curing property of organic silicon resin, improve the curing rate, reduce molding volume shrinking percentage and warping degree, and have important application in the fields of aviation, electronic engineering, light industry, mechanical engineering, chemical engineering and medicine.

A rotor for cooling pumps is provided. The rotor is of the type which includes a core to be assembled on a shaft connected with an engine and a body, fitted in the core, provided with a plurality of radial tabs in flexible material. The core and the body with the tabs are both of a material like rubber, but with different hardness. In particular the core is made of a mixture of neoprene, nitrile, PVC and aramidic fiber. The rotor combines the features of lightness and wearproof of the rotors with a nylon core, but it is as strong and resistant as rotors with a metallic core.

The present invention relates to a method for forming a channel hole of a three-dimensional memory device. The method comprises the steps: providing a substrate, a stacking layer located on the substrate and a dielectric layer covering the stacking layer, wherein the stacking layer comprises a plurality of insulating layers and a plurality of dummy gate layers which are stacked alternately; forming virtual channel holes penetrating through the dielectric layer and the stacking layer, wherein the virtual channel hole reaches the substrate; and respectively filling the virtual channel holes witha plurality of materials, wherein the plurality of materials have different hardness.

The invention discloses a preparing system of PMMA light-guide-stage transparent membranes. The preparing system comprises a washing device, a drying device, an extruding device, a polishing device, aconveying device, a relay type membrane surface dust removal device, a film pasting device, a first cutting device, a traction device, an edge cutting device, a second cutting device and a piece loading device which are sequentially arranged and further comprises negative-pressure chip sucking devices arranged on the discharging sides of the first cutting device, the edge cutting device and the second cutting device correspondingly. Squeezing rollers below a mouth die of the extruding device are a pair of flexible rollers. The relay type membrane surface dust removal device comprises an upperdust removal roller set and a lower dust removal roller set which are arranged on the two faces of the membranes. The negative-pressure chip sucking devices each comprise a plurality of negative-pressure chip sucking parts arranged on one face or two faces of a to-be-cut product. Ultra-thin and ultra-wide PMMA membranes can be produced, inner stress of prepared products is evenly distributed, andthus the products are not prone to being cracked. Meanwhile, the very small thickness tolerance (smaller than 1.5%) and extremely perfect optical quality can be obtained, and the defect that powderedscraps press the appearances of the products to be damaged is effectively overcome.

The invention belongs to the large-scale chemical equipment sealing surface on-site in-situ repair technology, and particularly relates to a large-scale PTA drying machine sealing surface abrasion on-site precise pulse surfacing welding repair process which comprises the steps that (1) an abrasion portion is cleared before surfacing welding; (2) precise pulse microscope surfacing welding is carried out: nickel / cobalt-base alloys with higher abrasion resistance to a base body and excellent weldability are chosen to serve as surfacing welding materials on the abrasion portion, and a precise pulse microscope surfacing welding machine is adopted to carry out surfacing welding on the abrasion portion; (3) a surfacing welding layer is preprocessed: a power-driven or pneumatic polishing tool is adopted to carry out preprocessing on the surfacing welding layer; (4) finish machining is carried out: oilstone and multi-granularity abrasive paper is adopted to carry out final finish machining on a repair surface to meet requirements for sealing surface dimension and precision. According to the large-scale PTA drying machine sealing surface abrasion on-site precise pulse surfacing welding repair process, the on-site in-situ surfacing welding repairing is carried out on the sealing surface of a large-scale device, and the base body is kept to be in a low temperature basically in a surfacing welding process and does not deform; the surfacing welding layer and the base body are in metallurgical bonding, strength is high, the surfacing welding materials are higher in abrasion resistance than the base body, surfacing welding efficiency is high, and cost is low.

A metal enclosure has a surface region which is coated with cladding material using a laser cladding process. The metal enclosure can form at least a portion of an electronic device housing. All or part of one or more surfaces of the enclosure can be coated with cladding material. The coating of cladding material can be varied at selective regions of the enclosure to provide different structural properties at these regions. The coating of cladding material can be varied at selective regions to provide contrast in cosmetic appearance.

The invention belongs to the field of repairing of high speed pump shafts for petrochemical industry and relates to a laser cladding repairing method for end tooth wear or cracks of general high speed pump gear shafts. The method aims at repairing of parts with wear and cracks on end teeth in long-time running process and comprises the steps of firstly removing damaged end teeth and remanufacturing new end teeth, carrying out hot charging by utilizing the part size change caused by temperature difference, selecting stainless steel powder and wear-resistant Co-based alloy powder which have mechanical properties similar to those of a base material, carrying out cladding by adopting laser cladding process parameters, removing residual stress in cladded parts through a hammering method, finally recovering the parts to a design size through a precise mechanical processing method, thereby recovering the operational performance of the high speed pump gear shafts. The method disclosed by the invention has the advantages that in the laser cladding repairing process of the high speed gear pump shafts, the base material is maintained at a low temperature all the time during cladding and the part deformation rate is almost zero; and the obtained cladding layer is metallurgically combined with a matrix, the automatic efficiency is high and the cost is low.

The invention relates to a high-heat-resistance copolymerized silicon resin and a preparation method thereof. The preparation method comprises the following steps: catalyzing hydroxyl-terminated linear polysiloxane and organic trichlorosilane to be precondensed by using a weak base compound in an organic solvent medium, then carrying out cohydrolytic condensation under the action of a strong base to obtain a copolymer, and carrying out high-temperature curing on the copolymer to obtain a product with the structural formula of (R1R2ViSiO0.5)a(R1R2SiO)b(R3SiO1.5)c, wherein a+b+c=1, a:c=(3-20):1, b:c=(1-6):1, R1, R2 and R3 are the same or different and are selected from one or more of Me, Ph and Vi, and the number-average molecular weight is 5*10<4>-10<6>. The copolymerized silicon resin not only can keep good physical and mechanical properties, but also has high heat resistance, can be used for a long time at 300 DEG C, and still keeps high strength and high elasticity after being subjected to thermo-oxidative aging for 72 hours in an environment at 350 DEG C.

A modified TPU abrasive sealing material, its production and use are disclosed. The process is carried out by adding TPU granular into ABS granular material, co-mixing, granulating, drying, molding and choosing. It consists of TPU granular material 100 proportion, ABS granular material 20-35 proportion and ultra-fine powder 0-15 proportion.

The guide plate may have tungsten carbide blocks with hardness over HRA80 adhered with inorganic adhesive to its wearable parts. During its manufacture and repair, the wearable parts are machined, cleaned and adhered with tungsten carbide blocks. The guide plate has high wear resistance, crack resistance and long service life. The guide plate is suitable for use of rod rolling mill, wire rolling mill and shape steel rolling mill.

The invention discloses an epoxy resin curing agent, and a preparation method and an application of the epoxy resin curing agent. Sulfydryl is introduced into ethidene diamine, so that an active hydrogen content of liquid polysulfide rubber is greatly increased; a condensate with higher crosslinking density can be obtained by a reaction between the epoxy resin curing agent and epoxy resin; the epoxy resin curing agent is both a flexibilizer and a curing agent of the epoxy resin, similar to a commonly-used fatty amine curing agent; curing rates are matched, so that the epoxy resin curing agentcan be mixed with a general organic amine curing agent freely to achieve different rigidity and strength; and the epoxy resin curing agent is flexible in molecular design. A preparation condition of the epoxy resin curing agent is easy to implement; a preparation technology is environment-friendly; and the preparation cost is low.

A drum tuning key comprises a handle portion, a barrel portion defining an axis connected to the handle portion, the barrel portion having internal walls defining a cavity extending inwardly along the axis from an end of the barrel portion, the cavity being square in cross section and adapted to turn a drum tension rod. The tuning key further comprises an indicator member removably disposed on at least one of the handle portion and the barrel portion. The indicator member may comprises a single plug member removably disposed on said handle portion, or a pair of plug members disposed on opposite lateral ends of said handle portion. The plug members may be different colors, different materials, and/or different hardness to enhance the assembly and tuning operation as well as pitch adjustment.

A three-dimensional modeling apparatus includes a stage, a head, an adjustment mechanism, an ejection command means, and a control means. On the stage, a powder material is accumulated. The head ejects ink to the powder material on the stage. The adjustment mechanism adjusts a relative height of the stage and the head for each predetermined layer thickness so that a three-dimensional object is formed on the stage by the predetermined layer thickness. The ejection command means causes the ink to be ejected from the head so that the powder material is colored a plurality of colors corresponding to multilevel luminance information items in a multivalued image obtained by performing a multivalued processing of luminance with respect to a two-dimensional cross-sectional image data of a modeling target object. The control means controls the adjustment mechanism and the ejection command means so that the multivalued image is drawn for each layer thickness.