36results about How to "Reduce production failure" patented technology

The invention relates to a roll ring steel for aluminum casting rolling mill and its heat treatment method. Chemical ingredient weight percentage of roll ring steel for aluminum casting rolling mill are : C 0.30-0.45, Mn 0.60-0.80, Si 0.20-0.40, P <=0.025, S <=0.025, Cr 2.00-3.00, Ni 0.50-1.00, Mo 0.80-1.20, V 0.10-0.20, Al <=0.012, surplus being ferrum and other impurity. The final heat treatment method of roll ring steel adopt second tempering after quenching. Quenching temperature is 850-920 DEG C , and proceeding in engine oil after heat preservation. In first tempering, roll ring is heated to 500-560 DEG C , insulated 10-20 hours, cooled in engine oil. The second tempering parameters are same with that of first tempering. The invention promotes anti heat fatigue crack capability of roll ring, so promotes the life of roll ring.

The invention discloses a quality control expert system and method for an FPC manufacturing process. The system comprises a data collection module, an intelligent analysis module, a warning management module and a database management module. Key physical parameters and FPC defect data of FPC manufacturing procedures are collected through the data collection module; afterwards, the physical conditions of the procedures are evaluated through a neural network; finally, defects generated in the procedures are automatically diagnosed and analyzed through an expert system, and early warning and warning are performed according to the diagnosis results and analysis results of the defects. The expert system diagnoses and analyzes the corresponding defects on the basis of the neural network, so that the bottleneck problem of knowledge acquisition for the expert system and the problems of misdiagnosis and rule conflicts in the diagnosis process are solved. According to the quality control expert system and method, the problems existing in quality control and defect analysis of the key working procedures in the FPC manufacturing process at present can be effectively solved, increase of the automation degree of the whole FPC manufacturing process and improvement on the production efficiency in the whole FPC manufacturing process are facilitated, and production failures are reduced.

The invention discloses a long-length rolling method and a production line of T-shaped elevator guide rails. The method mainly comprises the steps of firstly, taking an H-shaped continuously cast bloom as an original blank; secondly, feeding the H-shaped continuously cast bloom to the universal paired one-piece rolling procedure to obtain a pair of symmetrical T-shaped guide rails; thirdly, feeding the one-piece T-shaped guide rails into a cooling device to be cooled, and conducting subdivision and straightening on the one-piece T-shaped guide rails to obtain two independent finished T-shaped rolled pieces; finally, conducting fixed-length sawing and other follow-up processing procedures on the subdivided finished T-shaped rolled pieces to obtain a final finished product. According to the long-length rolling method and the production line of the T-shaped elevator guide rails, cooling bending of a single elevator guide rail caused by limitation of the cooling condition after universal rolling can be avoided, the surface quality of the elevator guide rails can be improved after rolling, post-rolling internal stress can be improved, the size precision and using performance of the elevator guide rails are improved, and the long-length elevator guide rail production technology featured in long-length rolling, long-length cooling and long-length straightening is realized.

The invention relates to a technological arrangement and preparation method of minimal-specification tire cord steel wire rods. The technological arrangement of the minimal-specification tire cord steel wire rods comprises a high-speed wire rod production line and further comprises a minimal-specification rolling production line arranged behind the high-speed wire rod production line. The minimal-specification rolling production line comprises a cluster mill unit. After a gathered roll is collected, the temperature of tire cord steel is kept at 400-600 DEG C, then minimal-specification continuous rolling is conducted, and rolling is conducted for 10-20 passes. By the adoption of the technological arrangement and preparation method of the minimal-specification tire cord steel wire rods, the minimal-specification tire cord steel at the dimension of phi4.5 mm-phi1.6 mm can be produced, the fault rate is effectively reduced in the wire rod production process, the labor consumption, the machine consumption, the equipment consumption and the like of the follow-up drawing step are greatly reduced, and the production cost is reduced.

The invention discloses a production process for preparing high-purity aluminum oxide by utilizing melt crystallization, and the production process comprises the following steps: introducing frozen saline water into the bottom of an outer jacket of a melting crystallizer, enabling the frozen saline water to uniformly flow on the outer wall of the crystallizer in the form of a falling film; addinga rough aluminum oxide solution into the melting crystallizer, flowing down the aluminum oxide solution on the inner wall of the crystallizer in the form of the falling film, cooling step by step to crystallize, growing out a uniform crystal layer on a heat exchange surface step by step, enabling concentration of the crystal layer to be higher than that of a mixture solution, enriching impuritiesinto the mixture solution step by step; regulating the hot water temperature through a heat exchanger for performing partial melting operation on the crystal layer, enabling low-melting-point impurities in the crystal layer to partly melt and remove, thereby further purifying the crystal. According to the method disclosed by the invention, the process is simple, the equipment structure is compact,the falling film form is adopted, energy is reduced, cost and equipment investment are reduced; and a product produced by the melting crystallizer is high in purity.

The invention discloses an intelligent special-shaped forming machine for air conditioner mesh enclosure production. The intelligent special-shaped forming machine is characterized by comprising a base, a bed body, a workbench, damping padding iron, an intelligent control device, a crankshaft, a clutch, a connection rod, a pneumatic tightening switch, a hammer body, a special-shaped hammer head, a special-shaped die, a T-shaped groove, a fixing bolt, a drawing device, a motor, a motor belt wheel, a big belt wheel, a V-shaped belt, a cable, a pneumatic pipe, a pneumatic blow gun, an air pump, a guide rail, a brake and a motor support; and the bed body is arranged on the base, the damping padding iron is arranged below the base, and the workbench is arranged in front of the bed body. According to the intelligent special-shaped forming machine, through arrangement of the intelligent control device, the clutch, the brake, the special-shaped die, the special-shaped hammer head and the damping padding iron, the machining efficiency and the machining quality of an air conditioner mesh enclosure are facilitated, the intelligent degree is increased, the production cost is lowered, damping and noise reduction are achieved, the service life is prolonged, multiple purposes are achieved through one machine, and application and popularization are facilitated.

The invention relates to a universal three-cut and four-cut hollow guide pipe device, which includes a hollow guide pipe, three three-cut guide grooves, four four-cut guide grooves, an installation base, a base supporting frame and a compression device, the three-cut guide grooves and the four-cut guide grooves are formed in the installation base, the compression device is fixedly installed on theinstallation base, the hollow guide pipe is fixedly clamped in the three-cut guide grooves and the four-cut guide grooves through the compression device, the installation base is connected with the base supporting frame by welding, the base supporting frame is fixedly installed on the ground, and each three-cut guide groove is arranged between every two adjacent four-cut guide grooves. Accordingto the universal three-cut and four-cut hollow guide pipe device, the structure is simple, the manufacturing cost is low, the requirements of three-cut and four-cut rolling can be met at the same time, and quick replacement of the hollow guide pipe can be realized.

When a steel slab, which has a component composition containing 0.03 mass% or less of C, 2.0-5.0 mass% of Si, 0.005-1.0 mass% of Mn, 0.040 mass% or less of sol. Al, 0.0005-0.0150 mass% of N and 0.030 mass% or less of S + Se with the balance made up of Fe and unavoidable impurities, is re-heated and hot rolled, the steel slab is re-heated so that heating rates R1 and R2 of the steel slab during the re-heating satisfy the following relation of 20 DEG C/min >= R2 >= R1 >= 2 DEG C/min when the heating rate for the range from the beginning of the re-heating to 750 DEG C is represented by R1 ( DEG C/min) and the heating rate for the range from 750 DEG C to 1,050 DEG C is represented by R2 ( DEG C/min) and then hot rolled, thereby reducing surface marks formed on the hot-rolled sheet.

The invention discloses a parallel drum wheel for a PASSIM cigarette making machine. The parallel drum wheel comprises a drum wheel body, wherein a plurality of air suction grooves are uniformly distributed in the outer peripheral surface of the drum wheel body, the surfaces of the air suction grooves are smooth, separation plates are formed between the two adjacent air suction grooves, and wear-resistance material layers are sprayed and coated on the upper surfaces of the separation plates. The parallel drum wheel is characterized in that the wear resistance material layers are sprayed and coated on the upper surfaces of the separation plates between the two air suction grooves, so when the parallel drum wheel is in contact with a plastic guide sheet, the plastic guide sheet can only generate the friction with the wear resistance material layers. The intensity of the wear resistance material layers is high, so the abrasion to the parallel drum wheel caused by the plastic guide sheet is relatively small, the service life of the parallel drum wheel can be prolonged, the production cost of the enterprises is reduced, in addition, the long-time normal operation of the equipment can be ensured through the adoption of the parallel drum wheel, the production fault occurrence frequency of smoke blockage and washboard blockage can be reduced, the production efficiency is improved, and the quality of cigarettes is improved.

The invention discloses a production technology for preparing high-purity sorbic acid by melt crystallization. The production technology comprises the following steps of firstly, sending freezing salt water into the bottom part of an outer jacket of a melt crystallization device, enabling the freezing salt water to uniformly flow along the outer wall of the crystallization device in a falling film way, feeding a crude sorbic acid solution into the melt crystallization device, enabling the sorbic acid solution to flow down along the inner wall of the crystallization device in the falling film way, gradually cooling and crystallizing, gradually growing a uniform crystal layer on the heat exchange surface, enabling the concentration of the crystal layer to be higher than the concentration of mixture solution, and enabling impurities to gradually enrich into the mixture solution; then, melting one part of crystal layer by adjusting the hot water temperature through a heat exchanger, and melting and removing the impurities with low melting point in the crystal layer, so as to further purify crystals. The production technology has the advantages that the method and technology are simple, the equipment structure is compact, the falling film type is adopted, the energy is decreased, and the cost and equipment investment are reduced at same time; the purity of a product produced by the melt crystallization device is high.

The invention discloses a production process for preparing high purity dehydroacetic acid by virtue of melt crystallization. The process comprises the following steps of: firstly introducing frozen saline water into the bottom of an outer jacket of a melting crystallizer, wherein the frozen saline water uniformly flows in a falling film manner on the outer wall of the crystallizer; then inputting a concentrated dehydroacetic acid solution into the melting crystallizer, wherein the dehydroacetic acid solution flows in a falling film manner on the inner wall of the crystallizer and is gradually cooled to be crystallized; gradually growing a uniform crystal layer on a heat exchange face, wherein the concentration of the crystal layer is higher than that of a mixed solution, and impurities are gradually enriched in the mixture solution; and then adjusting the temperature of hot water by virtue of a heat exchanger to partly melt the crystal layer, namely a sweating operation, wherein low-melting-point impurities mingled in the crystal layer are partly melted and removed, so that the crystal is further purified. The process disclosed by the invention is simple, the equipment is compact in structure, and the energy is reduced in form of the falling film, and meanwhile, the cost and equipment investment are lowered; a product produced by the melting crystallizer is high in purity.

The invention belongs to the field of gas meter production equipment, and discloses a metering shell press sealing system of a diaphragm gas meter. The metering shell press sealing system of the diaphragm gas meter comprises a rack, a rotary index plate and a press sealing machine, wherein the rotary index plate and the press sealing machine are arranged on the rack. The rotary index plate is provided with movement body positioning seats evenly distributed in the circumferential direction of the rotary index plate. A secondary positioning mechanism and a metering shell mechanical arm are arranged on one side of the rotary index plate. The secondary positioning mechanism comprises an overturning plate and a profiling tool which are arranged in a one-to-one correspondence manner. The overturning plate is provided with an overturning air cylinder and used for receiving a metering shell with an upward opening, the profiling tool is located on one side of the overturning plate, the shape of the profiling tool is matched with that of the metering shell, and the profiling tool is used for receiving the metering shell with a downward rotating opening of the overturning plate. The movement body positioning seats are used for containing movement bodies, and the metering shell mechanical arm is used for transferring the metering shell on the profiling tool and buckling the metering shell to the movement bodies. Press sealing is finished in the manners of shaping, expanding and pre-tightening, the buckling and even riveting press sealing efficiency of the metering shell and the movement bodies is effectively improved, and production faults and the like are reduced.

The invention provides a safety valve applicable to controlling high temperature flue gas. The safety valve comprises an executing mechanism and a flap valve body, wherein the executing mechanism is arranged outside the flap valve body; the flap valve body comprises a flap rotator protecting sleeve, a flap rotator and a sealing ring arranged on the inner wall of the flap valve body; the flap rotator comprises a rotating shaft and valve plates welded on both sides of the rotating shaft; a plurality of reinforcing ribs are arranged on each valve plate; the rotating shaft is fixed on the flap valve body through a cast iron sleeve and an end plate; the rotating shaft is connected with the executing mechanism through a connecting rod mechanism. By the additional arrangement of the reinforcing ribs, the safety valve is high in structural stability, low in equipment cost, high in equipment applicability, fewer in production faults and low in manufacturing cost, and resources are saved. According to the safety valve provided by the invention, opening and closing of a traditional manual control valve are changed, opening and closing of an electric control valve are increased, and thus a production system is capable of operating stably.