648 results about "Cryogenic treatment" patented technology

A cryoprobe supports administration of an active agent to a location of cryogenic treatment. The cryoprobe may optionally be combined with a syringe to form a cryoprobe system; alternatively and optionally, the syringe may be external to the cryoprobe.

The invention concerns an instrument suited for cryogenic treatments, for the medical or paramedical field as well as for the cosmetic field, comprising a microapplicator having a bore on the order of 20 to 120 μm supplied with a gas stream wherein all the foreign particles above 3 μm and preferably above 1 μm are eliminated. The invention also concerns a microapplicator designed to be used in such an instrument provided with a filter housed in or on said microapplicator, so that each time the latter is replaced, the filter is also replaced.

A chemical oxide film formed on a semiconductor substrate is formed by wet cleaning using a strongly acidic solution so that the adhesion of impurities to the chemical oxide film can be reduced between a wet cleaning process and an insulation film forming process. This makes it possible to prevent insulation degradation of a gate insulation film when the gate insulation film embracing the chemical oxide film is formed in the insulation film forming process in which low-temperature processing is conducted.

The invention relates to the technical field of cryogenic processes, in particular to a cryogenic process for prolonging the service life of a jet-moulded high-speed steel milling cutter. The cryogenic process for prolonging the service life of the jet-moulded high-speed steel milling cutter is characterized by comprising the following specific steps: preheating; quenching in vacuum; cooling; tempering primarily; performing cryogenic treatment; and tempering secondarily. Compared with the prior art, a new technology for combining vacuum quenching, tempering and cryogenic treatment is performed on a material of the jet-moulded high-speed steel milling cutter, so that after treatment of the cryogenic process, the wear resistance and the hardness of the material of the jet-moulded high-speed steel milling cutter are obviously improved, the comprehensive mechanical property of the milling cutter is improved and the service life of the milling cutter is prolonged.

The present invention relates to a low temperature treating process of self-cleaning TiO2 nanoglass. By using silica and anatase type nanosol as basic components and through pulling process, film is formed on the surface of glass plate. The film is dried at room temperature and cured or treated at temperature below 300 deg.c and cooled naturally. The prepared self-cleaned glass has excellent photocatalytic property, superhydrophilic property, high and homogeneous transparency. The said process is simple, low in cost and suitable for industrial production.

An improved method for the manufacture of a solid disc rotor and/or rotor segment for a single disk refiner, double disk refiner, multi-disk refiner, single cone refiner, or a double cone refiner. The invention comprises a plurality of blades spaced apart by recessed locations of a base plate. Either a water jet milling machine or a horizontal gang mill or both may be used. The blades comprise appropriately dimensioned cold rolled and cryogenically stabilized stainless steel or other appropriate stock of the appropriate hardness required by the application. The blades fit into respective locations in the base. The invention is further characterized by a continuous laser weld (85) along either side of each respective blade at its junction with the base, a variety of possible blade and base materials, and the use of one or more of cryogenic treatment, water cut jetting and water jet milling technologies.

The invention discloses a treatment method for improving the performance of a 3D printing metal workpiece. The treatment method comprises the following steps of sequentially carrying out primary cryogenic treatment and primary tempering treatment; carrying out secondary cryogenic treatment and secondary tempering treatment on a metal for 3D printing. The 3D printing metal workpiece treated by the treatment method disclosed by the invention has the micro-structural characteristic that when the 3D printing metal workpiece is subjected to cryogenic treatment, due to ultra-low temperature effect, the internal microstructure of the metal workpiece is shrunk, the gap is reduced, and thus the density of the product is increased; meanwhile, under cryogenic treatment conditions, ultrafine carbides are precipitated, the fine dispersed carbides can hinder the movement of dislocation in the plastic deformation of the material, and thus the wear resistance of the metal workpiece is enhanced; the lattice of martensite is promoted to be changed at an ultra-low temperature environment, the internal microstress of the metal workpiece is reduced, and the microstructure is strengthened, so that the hardness, impact toughness and wear resistance of the metal workpiece are significantly increased, and the microstructure and overall performances of the metal workpiece are finally improved, thereby enhancing the mechanical properties of the 3D printing metal workpiece.

Apparatus and methods for regulating cryogenic treatments are disclosed which comprise devices and methods for delivering controlled treatment of a cryoablative agent. In one variation, such devices may generally comprise an elongate probe having a distal tip and a flexible length, at least one infusion lumen positioned through or along the elongate probe, wherein the infusion lumen defines one or more openings along its length, and a liner expandably enclosing the probe. An inflow reservoir or canister valve may be fluidly coupled with a reservoir or canister containing the cryoablative agent and a modulation control unit may also be fluidly coupled with the inflow reservoir or canister valve and in fluid communication with the at least one infusion lumen. Additionally, a warming element may also be thermally coupled with the reservoir or canister.

The invention relates to a valve low temperature test system, in particular to a saving type valve low temperature test system capable of carrying out both cryogenic treatment on parts and valve low temperature test. The valve system comprises a low temperature environment unit and a test environment unit, wherein the low temperature environment unit is used for carrying out the cryogenic treatment on a valve to be tested, and the test environment unit provides gas for the valve to be tested; and the valve system further comprises a process monitoring unit for monitoring the test process. Theinvention can carry out both the cryogenic treatment on the parts and the valve low temperature test; in addition, the invention reduces the wastage of liquid nitrogen and helium and the accident risk of testers, and greatly reduces the manufacturing and testing costs of the system.

The invention discloses a heat treatment method for a ultra-high-hardness nonferrous-metal cold roll. The heat treatment method comprises the following steps: a, firstly putting the roll in a preheating furnace for preheating at a temperature of 220-250 DEG C; b, installing the roll on a quenching machine tool to performing rotation water-spraying quenching on the roll body, wherein the working parameters of the quenching machine tool comprise the quenching temperature of 900-950 DEG C, the quenching water temperature of 15-25 DEG C and the quenching water pressure of 0.15-0.30 MPa; c, after quenching, performing ultralow-temperature deep cryogenic treatment at -120 DEG C to -180 DEG C; d, after deep cryogenic treatment is finished, hanging the roll and sending to a heating furnace to quench at 100-120 DEG C, and controlling the quenching time to not less than 72 h; and e, performing hardness detection on the surface of the roll body subjected to quenching, so as to prepare the needed ultra-high-hardness nonferrous-metal cold roll is the surface hardness is qualified. The surface hardness of the prepared roll reaches 102-105 HSD, the hardness uniformity is 1 HSD or less, and the depth of a hardening layer reaches 20 mm or more.

The invention discloses a heat treatment process for improving the strength and toughness of 9SiCr die steel. The 9SiCr die steel is subjected to the final heat treatment after preheating treatment. The final heat treatment comprises the following steps of: heating to 880-920 DEG C for austenization, performing isothermal oil quenching at 230-260 DEG C, pre-tempering for 1 hour at 160-200 DEG C, then performing cryogenic treatment for at least 24 hours at a temperature between -130 DEG C and -190 DEG C, and finally tempering for 2 hours at 180-200 DEG C. With the process provided by the invention, the hardness value of a die is increased as compared with that of the isothermal quenching and tempering process and close to that of the quenching and tempering process; the impact toughness of the die is greatly increased as compared with those of the isothermal quenching and tempering process and the quenching and low-temperature tempering process and increased by 2 to 3 times as compared with that of the isothermal quenching and tempering process. Besides, both the wear-resistant property and the service life of the die are greatly improved.

The invention provides a method for modification of a glass fiber composite material by ultralow temperature treatment. The method is characterized in that it specifically includes the steps of: placing a glass fiber composite material sample in ultralow temperature treatment equipment with a cryogenic medium, sealing the container to conduct ultralow temperature treatment at constant temperature ranging from minus 100DEG C to minus 200DEG C for 1-15h; and at the end of the ultralow temperature treatment, raising the temperature through temperature programming, or taking the sample out of the ultralow temperature treatment equipment to perform natural temperature return. The glass fiber composite material treated by ultralow temperature in the invention has improved bending resistance, tensile properties, interlaminar shear performance and wear resistance, and more excellent comprehensive performance, and can meet the application demands of different fields. At the same time, the service life of the glass fiber composite material is prolonged.

Disclosed are: a low-temperature-processing-type electrically conductive ink which enables the formation of an extremely fine electrically conductive pattern by screen printing, does not require any specialized process for production thereof, and has excellent resistance value stability; a laminate having an electrically conductive pattern attached thereto, which is produced using the electrically conductive ink; and a process for producing the laminate. The electrically conductive ink comprises electrically conductive particles each having a tap density of 1.0 to 10.0 (g/cm3), a D50 particle diameter of 0.3 to 5 [mu]m and a BET specific surface area of 0.3 to 5.0 m2/g, an epoxy resin having a number average molecular weight (Mn) of 10,000 to 300,000 and a hydroxy value of 2 to 300 (mgKOH/g), and a metal chelate capable of achieving an alcohol interchange reaction with a hydroxy group in the epoxy resin and contained in an amount of 0.2 to 20 parts by weight relative to 100 parts by weight of the epoxy resin, and has a storage modulus (G') of 5,000 to 50,000 (Pa).

The invention aims at providing a heat treatment method for maraging stainless steel. The heat treatment method is characterized by comprising the following steps of performing solution treatment on the maraging stainless steel at the temperature of 1100 to 1250DEG C for 40 to 90 minutes, and performing water cooling; then performing cryogenic treatment; and finally, performing ageing treatment for two times at the temperature of 500 to 580DEG C, insulating for 1 to 2 hours each time, and performing air cooling to room temperature. For an alloy treated by adopting the method, the tensile strength reaches 1900Mpa, the impact toughness reaches ak60J/cm<2>, the hardness is HRC50, and the strength and the toughness are well matched.

The invention relates to an automotive transmission case and a manufacturing method thereof. The automotive transmission case with high strength and high tenacity is obtained by preparing a mold for a specific component magnesium alloy; preparing materials, smelting, extruding and casting; quenching, carrying out cryogenic treatment, tempering and carrying out aging treatment.

The invention relates to the technical field of cold rolls, in particular to a preparation method for cold rolls of super hardness wide width double-zero aluminum foils. The method particularly comprises the following steps: firstly, carrying out anneal process on a blank roll which is made of high chromium alloy materials in a forged mode, then carrying out rough turning process, thermal refining, semi fine turning process and heat treatment, and finally carrying out fine turning process on the blank roll to repair a die until a finished product is obtained. According to the preparation method for the cold rolls of the super hardness wide width double-zero aluminum foils, the high chromium alloy materials and a four-pillar sunken downwards type double-power-frequency heat treatment technology are adopted, the cold rolls are manufactured through full numerical control four-area temperature-controlled liquid nitrogen processing cryogenic treatment, the hardness of roll bodies of the cold rolls can reach 102-104 HSD, the depth of a hardening layer is larger than or equal to 25mm, uniformity of the hardness is within HSD+/-0.5, length of roll faces exceeds 2300mm, high-grade wide width aluminum foils with width of the finished aluminum foils reaching 2300mm and thickness of 0.0065mm or below 0.0065mm can be rolled, and the preparation method is widely applied to industries such as cigarettes, food, medicine, electrons, photographic apparatuses and chemicals for daily use.

The invention relates to a bi-phase nano particle reinforced titanium alloy protective coating and a preparation method of the bi-phase nano particle reinforced titanium alloy protective coating, wherein the preparation method is characterized by comprising the steps of preparing nano La2O3 powders, WC powders and micron NiCoCrAlY into bi-phase nano particle reinforced metal base micron/nano composite powders according to a certain proportion; cladding the composite powders on the surface of titanium alloy through laser cladding; performing grinding and quenching on the titanium alloy coatingafter the cladding; placing the titanium alloy and the coating of the titanium alloy into liquid nitrogen for subzero treatment after the grinding and quenching; finally conducting twice low tempering on the titanium alloy coating after the subzero treatment. The titanium alloy protective coating has outstanding performances such as high hardness, high strength, wear resistance, thermal etching resistance and resistance to thermal shocks and the like.

The invention discloses a high-strength cast aluminium-silicon alloy reinforced via cryogenic treatment, and a preparation method thereof, and belongs to the technical field of aluminium-silicon alloy. The invention also discloses chemical composition of the high-strength cast aluminium-silicon alloy reinforced via cryogenic treatment. The preparation method comprises steps of chemical composition controlling, melting process controlling, casting technology controlling, and cryogenic treatment. The step of cryogenic treatment comprises following steps: solution treatment is carried out for 5 to 6h at 470 to 490 DEG C, and then quenching in hot water of 60 to 90 DEG C is carried out; cryogenic thermal insulation is carried out for 24h at -145 to -165 DEG C, and the temperature of an obtained product is increased to room temperature in the air; aging treatment is carried out for 5 to 6h at 170 to 180 DEG C, and the processed product is cooled to room temperature in the air so as to obtain the high-strength cast aluminium-silicon alloy reinforced via cryogenic treatment. According to the preparation method, cryogenic treatment is capable of increasing solubility of alloy elements in cast aluminium-silicon alloy greatly, and more fine strengthening phases are formed by a plurality of added alloy elements, so that the mechanical properties of the high-strength cast aluminium-silicon alloy are much better than that of other cast aluminium-silicon alloy.