33results about How to "Guaranteed vulcanization effect" patented technology

The invention discloses a high-elasticity wear-resistant dual-density in-mold foaming rubber tire and a manufacturing process of the high-elasticity wear-resistant dual-density in-mold foaming rubbertire, and belongs to the technical field of rubber product processes. The high-elasticity wear-resistant dual-density in-mold foaming rubber tire comprises a high-density outer layer and a low-densityinner layer, and is of an integrated structure with the same mold for discharging. The high-density outer layer and the low-density inner layer are made of high-density rubber materials and low-density rubber materials correspondingly. Spring supports in a radial state are uniformly embedded in the low-density inner layer so as to play the role of framework support, and the elasticity of springscan be selected to be consistent with the elasticity of low-density rubber so as to enhance the supporting strength of the low-density inner layer. In addition, a dual-density bi-directional injectionin-mold forming-vulcanizing tire production system is applied to complete dual-density glue bi-directional injection, foaming and vulcanizing processes in one mold and obtain the manufactured tire. The problems of the insufficient elasticity of a rubber tire, the separate operation of injection, foaming and vulcanizing of a dual-density tire, energy consumption, time consumption and the high costare solved.

The invention relates to a wet startup sulfuration method of a hydrocracking unit. The method comprises the following steps that: (a) light fraction startup oil is introduced at a low temperature; (b) a vulcanizing agent is introduced when a temperature at an inlet of a reactor reaches a decomposition temperature of the vulcanizing agent; (c) after hydrogen sulfide penetrates a catalyst bed in the reactor, heating is carried out according to a conventional hydrogenation catalyst sulfuration process, then heavy fraction sulfur-containing startup oil is introduced instead when the catalyst bed reaches a temperature of 235 to 300 DEG C, liquefied ammonia is introduced at the same time, and introduction of the vulcanizing agent is stopped; (d) after introduction of the heavy fraction sulfur-containing startup oil, final sulfuration of a catalyst is completed by using hydrogen sulfide obtained in a hydrogenolysis reaction of a sulfide in the startup oil; and (e) raw oil is directly introduced instead step by step after sulfuration is finished, and when 60 to 85% of raw oil is introduced, introduction of liquefied ammonia is stopped and normal production is started. Compared with the prior art, the method provided by the invention enables startup time to be shortened while guaranteeing performance of the catalyst and realizes safe and smooth startup.

The invention provides a heat-conducting and shock-absorbing rubber material, and is used for preparing the rubber shock absorption product with the thickness larger than 25 mm. The heat-conducting and shock-absorbing rubber material comprises the following components in parts by weight: 70-100 parts of natural rubber, 0-30 parts of synthetic diene rubber, 10-30 parts of carbon black, 3-10 parts of a plasticizer, 0.5-2 parts of an anti-aging agent RD, 0.5-3 parts of an anti-aging agent 4020, 3-5 parts of zinc oxide, 0.5-2 parts of stearic acid, 1-8 parts of carbon nanotubes, 50-80 parts of silane modified silica, 1.0-1.8 parts of sulfur and 0.5-3 parts of a dithiophosphate accelerator. The invention also provides a preparation method of the heat-conducting and shock-absorbing rubber material, the vulcanization efficiency of the heat-conducting and shock-absorbing rubber material can be improved, and the quality problems of excessive vulcanization outside a product and insufficient vulcanization inside the product during vulcanization can be effectively solved.

The invention relates to a wet startup sulfuration method of a hydrocracking unit. According to the invention, a part of recycle gas is heated by using a heating furnace, then a vulcanizing agent is introduced, and hydrogen sulfide is obtained after decomposition of the vulcanizing agent; then recycle gas rich in hydrogen sulfide is mixed with a second part of recycle gas, and mixed gas passes through a catalyst bed after reaching a desired temperature; light fraction startup oil is introduced at a low temperature, heavy fraction startup oil is introduced instead when the catalyst bed reaches a temperature of 235 to 300 DEG C, liquefied ammonia is introduced at the same time, and introduction of the vulcanizing agent is stopped; after introduction of the heavy fraction startup oil, final sulfuration of a catalyst is completed by using hydrogen sulfide obtained in a hydrogenolysis reaction of a sulfide in the startup oil, raw oil is directly introduced instead step by step after sulfuration is finished, and when 60 to 80% of raw oil is introduced, introduction of liquefied ammonia is stopped and normal production is started. Compared with the prior art, the method provided by the invention enables startup time to be shortened while guaranteeing performance of the catalyst and realizes safe and smooth startup.

The invention discloses a center mechanism capsule height control device and method for a tyre vulcanizer. The device comprises a center mechanism, a pressure water cylinder assembly and a control assembly. The center mechanism comprises a cylinder body and a lifting rod. The lifting rod is sleeved with the cylinder body in a vertical sliding manner. The top of the lifting rod is used for being connected with an upper ring. The bottom end of the lifting rod stretches out of the cylinder body. The pressure water cylinder assembly comprises a pressure water cylinder and a piston rod. One end ofthe piston rod is slidably embedded into the pressure water cylinder. The other end of the piston rod is connected to the bottom of the lifting rod. The internal space of the pressure water cylinder is divided into a first cavity and a second cavity by the piston rod. According to the center mechanism capsule height control device for the tyre vulcanizer, due to the fact that the pressure water cylinder and the cylinder body are designed separately, that is, the pressure water cylinder is independently arranged below the cylinder body, the problem that the pressure water in the pressure watercylinder enters a capsule, and the vulcanization effect of a tyre is reduced is avoided.

The invention relates to a wet startup sulfuration method of a hydrocracking unit. The method comprises the following steps that: (a) light fraction startup oil is introduced at a low temperature; (b) a vulcanizing agent is introduced when a temperature at an inlet of a reactor reaches a decomposition temperature of the vulcanizing agent; (c) after hydrogen sulfide penetrates a catalyst bed in the reactor, heating is carried out according to a conventional hydrogenation catalyst sulfuration process, then heavy fraction sulfur-containing startup oil is introduced instead when the catalyst bed reaches a temperature of 235 to 300 DEG C, liquefied ammonia is introduced at the same time, and introduction of the vulcanizing agent is stopped; (d) after introduction of the heavy fraction sulfur-containing startup oil, final sulfuration of a catalyst is completed by using hydrogen sulfide obtained in a hydrogenolysis reaction of a sulfide in the startup oil; and (e) raw oil is directly introduced instead step by step after sulfuration is finished, and when 60 to 85% of raw oil is introduced, introduction of liquefied ammonia is stopped and normal production is started. Compared with the prior art, the method provided by the invention enables startup time to be shortened while guaranteeing performance of the catalyst and realizes safe and smooth startup.

The invention provides a steel ring for tire vulcanization and a pot-type model for small-sized and medium-sized tire vulcanization and relates to the technical field of tire vulcanization. Two waternozzle seats and water nozzle seat bottom holes are formed in one side of the steel ring for tire vulcanization, a seal ring seat is arranged on the other side of the steel ring for tire vulcanization, and a seal ring base hole is formed in the seal ring seat and communicates to the water nozzle seat bottom holes separately. The center distance between the two water nozzle seat bottom holes is greater than that between the two seal ring seat bottom holes, and one of the water nozzle seat bottom hole is connected to a water inlet pipe of a vulcanization pot as a water inlet and the other waternozzle seat bottom hole is connected to a water outlet pipe of the vulcanization pot as a water outlet. The pot-type model for small-sized and medium-sized tire vulcanization comprises the steel ringfor tire vulcanization and can be connected to the vulcanization pot through the steel ring for tire vulcanization. The product specification tire bead model can be reduced to 13 inches in a pot-typeconventional production condition, so that the production range of the vulcanization pot is expanded, and a flexible production demand is met.

The invention discloses a high-elasticity wear-resistant dual-density in-mold foaming rubber tire and a manufacturing process of the high-elasticity wear-resistant dual-density in-mold foaming rubbertire, and belongs to the technical field of rubber product processes. The high-elasticity wear-resistant dual-density in-mold foaming rubber tire comprises a high-density outer layer and a low-densityinner layer, and is of an integrated structure with the same mold for discharging. The high-density outer layer and the low-density inner layer are made of high-density rubber materials and low-density rubber materials correspondingly. Spring supports in a radial state are uniformly embedded in the low-density inner layer so as to play the role of framework support, and the elasticity of springscan be selected to be consistent with the elasticity of low-density rubber so as to enhance the supporting strength of the low-density inner layer. In addition, a dual-density bi-directional injectionin-mold forming-vulcanizing tire production system is applied to complete dual-density glue bi-directional injection, foaming and vulcanizing processes in one mold and obtain the manufactured tire. The problems of the insufficient elasticity of a rubber tire, the separate operation of injection, foaming and vulcanizing of a dual-density tire, energy consumption, time consumption and the high costare solved.

The invention relates to the technical field of vulcanization boxes and in particular relates to a vulcanization box capable of automatically adjusting sulphur concentration. The vulcanization box capable of automatically adjusting sulphur concentration comprises a vulcanization box, wherein a detector is arranged in the vulcanization box; and a vulcanization gas injector is arranged at the left side of the vulcanization box. When the vulcanization box capable of automatically adjusting sulphur concentration works, the concentration of the vulcanization gas in the vulcanization box is monitored by the detector which is arranged in the vulcanization box, and the concentration in the vulcanization box is adjusted by controlling the vulcanization gas injector, so that the vulcanization effect is ensured, and the using effect is good.

The invention discloses a heating sheet for tire repairing. The heating sheet comprises a heating sheet main body, wherein an arc-shaped turnup is arranged at one end of the heating sheet main body. The arc-shaped turnup is an arc-shaped component arranged in a width direction of the heating sheet main body, and the circle center of the arc-shaped component is located on the outer side of the heating sheet main body. The heating sheet is simple in structure and reasonable in design; the heating sheet can be better located at a toe of a tire, so as to guarantee a vulcanizing effect of a patch at the toe position.

The invention discloses a high-strength high-elasticity dual-density in-mold foaming rubber-plastic tray and a manufacturing process of the high-strength high-elasticity dual-density in-mold foaming rubber-plastic tray, and belongs to the technical field of rubber product processes. The high-strength high-elasticity dual-density in-mold foaming rubber-plastic tray comprises a high-density outer layer and a low-density inner layer, and is of an integrated structure with the same mold for discharging. The high-density outer layer and the low-density inner layer are made of high-density rubber materials and low-density rubber materials correspondingly. Spring supports distributed vertically and / or transversely and perpendicular to the horizontal plane of a tray body are uniformly embedded inthe low-density inner layer. In addition, a dual-density bi-directional injection in-mold forming-vulcanizing tray production system is applied to complete dual-density glue bi-directional injection,foaming and vulcanizing processes in one mold and obtain the manufactured tray. The problems of the insufficient elasticity of a rubber tray, the separate operation of injection, foaming and vulcanizing of a dual-density tray, energy consumption, time consumption and the high cost are solved.

The invention relates to the field of damping of elastic rubber parts, in particular to a spacer design method for a rod end ball hinge. The rod end ball hinge comprises a jacket, a mandrel and a rubber layer, a spacer is arranged in the rubber layer, and the spacer is on the spacer. Set the upper side of the spacer, the lower side of the spacer and the end face of the spacer, connect one end of the end face of the spacer to the upper side of the spacer, and connect the other end of the end face of the spacer with the lower side of the spacer relative to the upper side of the spacer. A tip B1 is formed between the end face and the upper side of the spacer, and the tip B1 between the upper side of the spacer and the end face of the spacer forms point contact with the mold, and the tip B1 is used to make point contact with the mold. Axial positioning reduces spacer tolerance requirements.

The invention relates to the technical field of shock absorption of elastic rubber parts, in particular to an overall design method of a multi-layer rod-end ball joint. Performance, specifically to improve the service life of the ball joint through the design of the rubber profile; to improve the service life of the ball joint or reduce the processing difficulty of the ball joint before vulcanization through the design of the spacer sleeve; to reduce the The difficulty of processing the ball joint before vulcanization may improve the service life of the ball joint.

The invention discloses a method for preventing fluorine rubber O-rings from sticking during secondary vulcanization, and belongs to the field of surface treatment of rubber products. A method for preventing fluorine rubber O-rings from sticking during secondary vulcanization of the present invention, through the steps of cleaning→feeding→spraying release agent→coating, drying→curing, and secondary vulcanization, the coating of emulsified silicone oil is reasonably applied , drying machine and curing process, to achieve the purpose of solving the sticking phenomenon of fluorine rubber O-rings after secondary vulcanization, so as to improve the inspection efficiency of O-rings and reduce the risk of missing inspections. The surface of the fluorine rubber O-ring after secondary vulcanization by the method of the invention has no sticking phenomenon, which greatly improves the inspection efficiency.

The invention discloses a heating sheet for tire repairing. The heating sheet comprises a heating sheet main body, wherein an arc-shaped turnup is arranged at one end of the heating sheet main body. The arc-shaped turnup is an arc-shaped component arranged in a width direction of the heating sheet main body, and the circle center of the arc-shaped component is located on the outer side of the heating sheet main body. The heating sheet is simple in structure and reasonable in design; the heating sheet can be better located at a toe of a tire, so as to guarantee a vulcanizing effect of a patch at the toe position.

The invention discloses a rubber double-density double-injection product intra-mold foaming and sulfuration molding system and process and belongs to the technical field of rubber product processes. The rubber double-density double-injection product intra-mold foaming and sulfuration molding system comprises a compression molding sulfuration table and two injection machine bases, wherein the two injection machine bases are symmetrically arranged at the two sides of the compression molding sulfuration table. A compression molding sulfuration device is fixed to the compression molding sulfuration table. The two injection machine bases are each fixedly provided with a rubber material injection device. The two rubber material injection devices are arranged oppositely, one is the high-density rubber material injection device, and the other is the low-density rubber material injection device. The compression molding sulfuration device comprises two mold inner cores which are the same in shape and different in specification. By means of the high-density rubber material injection device and the low-density rubber material injection device, two types of plastified rubber materials differentin density are matched with the different mold inner cores and sequentially injected into a mold of the compression molding sulfuration device. Compression molding foaming and sulfuration are conducted on the plastified rubber materials in the mold through the compression molding sulfuration device; injection, foaming and sulfuration of double-density rubber products are completed in the same mold; product transfer among all procedures is avoided; and the production cost is lowered.

The invention provides an electroforming solution for a gold cyanide-free electroforming process and an electroforming process. 1 liter of the electroforming solution comprises 25-30 g of gold chloride gold salt, 60-80 g of anhydrous sodium sulfite, 50-70 g of sodium chloride, a hardening agent, anhydrous saccharin sodium salt, tellurium dioxide, ammonia water and phosphoric acid, wherein a mass ratio of an addition amount of the hardening agent to an addition amount of gold trichloride gold salt is 1: 1, and a mass ratio of an addition amount of the anhydrous saccharin sodium salt to an addition amount of the gold chloride gold salt is 1: (45-55). The process comprises the following steps of taking a wax mold as an electroforming model, and conducting copper plating after silver oil soaking, so as to plate the wax mold with a bright copper coating; conducting electrolytic degreasing, acid pickling activation and water washing deacidification; and conducting gold electroforming through the electroforming solution, and removing a mold core of the electroforming model after electroforming, so as to obtain a gold product. According to the electroforming solution and the electroforming process, an electroforming liquid system is stable, the service life is long, and the high-frequency problems of brittle fracture, soft surface collapse, interlayer peeling, hard spots and roughing, pores and needle holes and the like of products cast by an existing similar sulfite casting liquid system are solved.

The invention relates to a wet startup sulfuration method of a hydrocracking unit. According to the invention, a part of recycle gas is heated by using a heating furnace, then a vulcanizing agent is introduced, and hydrogen sulfide is obtained after decomposition of the vulcanizing agent; then recycle gas rich in hydrogen sulfide is mixed with a second part of recycle gas, and mixed gas passes through a catalyst bed after reaching a desired temperature; light fraction startup oil is introduced at a low temperature, heavy fraction startup oil is introduced instead when the catalyst bed reaches a temperature of 235 to 300 DEG C, liquefied ammonia is introduced at the same time, and introduction of the vulcanizing agent is stopped; after introduction of the heavy fraction startup oil, final sulfuration of a catalyst is completed by using hydrogen sulfide obtained in a hydrogenolysis reaction of a sulfide in the startup oil, raw oil is directly introduced instead step by step after sulfuration is finished, and when 60 to 80% of raw oil is introduced, introduction of liquefied ammonia is stopped and normal production is started. Compared with the prior art, the method provided by the invention enables startup time to be shortened while guaranteeing performance of the catalyst and realizes safe and smooth startup.

The application provides a steel ring for tire vulcanization and a tank model for vulcanization of small and medium-sized tires, which relate to the technical field of tire vulcanization. One side of the steel ring for tire vulcanization is provided with two nozzle seats and the bottom hole of the nozzle seat, and the opposite side of the steel ring for tire vulcanization is provided with a sealing ring seat, and the sealing ring seat is provided with a sealing ring seat bottom The holes are respectively connected with the bottom hole of a faucet seat. The center distance between the bottom holes of the two nozzle seats is greater than the center distance between the two holes of the sealing ring seat. The hole is used to connect with the water outlet pipe of the autoclave and serves as the water outlet. The tank model of small and medium-sized tire vulcanization includes the steel ring for tire vulcanization and can be connected with the vulcanization tank through the steel ring for tire vulcanization. Under the normal production conditions of the tank type, the product specification bead model can be reduced to 13 inches, and the size of the bead can be expanded. The range of vulcanization tank production is expanded, which meets the requirements of flexible production.