37results about How to "Uniform hardening" patented technology

The invention relates to a method for preparing a work hardening insulation quilt for a high temperature furnace, which comprises the following steps of: 1, cutting, pre-impregnating and airing a soft quilt; 2, adhering the soft quilt by using an adhesive; 3, pressing and curing for forming; 4, performing carbonization treatment; 5, performing high temperature treatment; 6, machining; 7, performing coating treatment; and 8, performing chemical vapor deposition treatment and high temperature treatment, or directly performing high temperature treatment to obtain the work hardening insulation quilt for the high temperature furnace. The method has the advantages of simple technological process and suitability for mass production; and the prepared work hardening insulation quilt has the heat conductivity of less than or equal to 0.5W / m.K, the ash content of less than or equal to 2,000ppm, high mechanical properties and high-temperature dimensional stability and excellent processability, does not generate volatile matters when used in the high temperature furnace, cannot pollute the product, and has important significance for prolonging the service life of the insulation quilt in the high temperature furnace.

A hot-air supply structure (1) comprises a hot air generator (20) and a housing (15) formed in the neighborhood of a hot-air inlet (81) of a molded component M in a die (10). A nozzle (21) is formed at the forward end of the hot-air generator, and an ejection port (211b) is formed on the side wall portion of the forward end needle unit (211) of the nozzle. The housing includes a support hole (151) in the nozzle, a relief hole (152), a flow path communication passage (153) and a bypass (154). The ejection port is movable between a first position to discharge the cool or warm air into the atmosphere through the bypass from the relief hole and a second position to introduce hot air into the flow path (8) of the molded component through the inlet (81) and the passage (153).

The invention relates to a method for producing resin, and particularly relates to a method for producing casting cold-box resin. The method comprises the following steps: adding dissolved industrial phenol to a reaction kettle; starting an agitator; adding solid paraformaldehyde, a regulator and 0.08-0.12% of metal ion catalyst; opening a steam valve, slowly heating up, and heating up to 105 DEG C within 40-50 minutes; keeping constant temperature at 105-108 DEG C for 30 minutes; heating up to 112 DEG C within 10-20 minutes, and keeping constant temperature at 112-115 DEG C for 50 minutes; continuing to heat up and dewatering under normal pressure after heat preservation is finished; timing constant temperature when the temperature inside the kettle ascends to 120 DEG C, and keeping constant temperature at 120-123 DEG C for 30 minutes; after constant temperature is finished, vacuumizing and continuing to dewater; stopping dewatering when the total dewatering amount achieves 60% of formaldehyde amount; adding a polar dibasic acid ester, nonpolar high-boiling point solvent oil and a modifier; agitating for 60 minutes; adding an enhancer when cooling to below 40 DEG C; evenly agitating, detecting and packaging. The casting cold-box resin which is low in viscosity, and high in casting sand strength, can be used for a long period of time, and meets core-making production in batches is provided by the invention.

The invention relates to a bonding agent for casting, in particular to a self-hardening sand bonding agent for casting and a preparation method and a using method thereof. The self-hardening sand bonding agent for the casting comprises resin and a curing agent, wherein the resin consists of the following components in part by weight: 100 parts of castor oil, 40 to 90 parts of glycerol, 0.1 to 0.2part of calcium oxide, 50 to 90 parts of phthalic anhydride, 5 to 9 parts of dimethylbenzene, 120 to 200 parts of high-boiling point arylhydrocarbon; and the curing agent is prepared by mixing 100 weight parts of isocyanate and 20 to 40 weight parts of high-boiling point arylhydrocarbon. The bonding agent has readily available raw materials and is environment-friendly, equipment required by a synthetic process is simple, and a process condition is easy to control; the bonding agent has high sand mulling flowability, low gas forming amount, high gas forming speed, stable sizes of sand cores / sand molds and smooth surfaces, is convenient to store, and has the excellent effects of resisting sand burning and deformation; and the sand molds are hardened integrally and uniformly, castings have high size accuracy, and sand can be recycled, so the bonding agent is suitable for the production of large-scale steel-casting sand molds.

Foam systems and / or foam kits each have 2 or more components, including component(s) containing alkoxysilane-terminated prepolymers (I) and other component(s), such that reactants (II) that can form a gas in contact with one another are in not less than 2 separate components before mixing. Independent claims are included for (1) use of 2 or more (II) in the production of foam from mixtures containing (II) and (I); (2) use of (I) and (II) for producing a foam system and / or kit; (3) process for producing foam from these systems and / or kits.

The invention discloses a method for curing a diamond resin line by microwave-ultraviolet combined use type. The method comprises the following steps of arranging the diamond resin line in a microwave and ultraviolet-containing curing device, and curing, wherein the diamond resin line comprises a diamond-containing resin coating layer and a metal core layer; the resin is a mixed resin which comprises a thermosetting resin and a photocuring resin. The method has the advantages that industrial microwave heating and ultraviolet curing techniques are applied into the production of the diamond resin line, the traditional processing type of the diamond resin line is changed by utilizing the advantages of microwave heating and ultraviolet curing, the resin drying time is shortened, the curing of the resin line is more uniform, the holding force of diamond on the line is enhanced, and the cutting efficiency is improved; the traditional coating type of the resin line is changed, the exposure speed of the diamond on the line is high, and the defect of exposure only by removing the surface coating layer of the diamond in the preliminary stage is overcome.

The invention discloses a firework barrel forming mold and production equipment. The firework barrel forming mold comprises a mold base, an upper mold and a lower mold. A forming cavity which is used for accommodating raw materials is arranged on the lower mold, ultrasonic vibration heads which are used for transmitting ultrasonic waves to the forming cavity are arranged on the lower mold, the upper mold comprises an upper mold plate and an upper mold cylinder, the upper mold cylinder is used for driving the upper mold plate to move up and down, the lower mold comprises a cavity, the forming cavity, a lower mold plate and a lower mold cylinder, the forming cavity is arranged on the cavity, the lower mold plate is arranged in the forming cavity, the lower mold cylinder is used for driving the lower mold plate to vertically move up and down in the forming cavity, and the ultrasonic vibration heads are fixed onto the cavity. The firework barrel forming mold and the production equipment have the advantages that the raw materials in the forming mold can be vibrated at high frequencies, accordingly, the internal chemical reaction speeds of the raw materials can be increased, the compactness of products and the quality of the products can be improved, drying degrees of the products can be upgraded, the strength of the products stripped from the forming mold can be improved, the products are difficult to break and are easy to carry, and the time required by drying or natural drying in later periods can be shortened.