47results about How to "Avoid heat and burn" patented technology

The invention discloses an annealing method in the production of medium and high-voltage electronic aluminum foil for high-capacity and high-strength capacitors. The continuous air-cushion furnace adopts a belt type to perform intermediate annealing. The aluminum strip is heated evenly, and the heating time is controlled by the speed of the continuous air-cushion furnace. The time is stable and controllable, which ensures the consistency of grain recrystallization growth, the obtained structure is uniform, eliminates internal stress, and reduces the degree of work hardening of aluminum foil; the finished aluminum foil is annealed through a continuous air cushion furnace, and multi-zone different temperatures are used for annealing In this way, the recrystallization growth rate of the grains is controlled, ensuring that the non-cubic texture is transformed into a cubic texture, increasing the ratio of the cubic texture, and enriching trace elements on the surface to increase the corrosion porosity; Rapid cooling and winding to prevent surface damage caused by thermal adhesion.

The invention discloses an electromagnetic heating system and its control method. The electromagnetic heating system includes a resonant heating circuit, a synchronous circuit, a power switch tube and a driving circuit. The method includes the following steps: controlling the electromagnetic heating system to enter the current heating cycle, and the current heating cycle It includes a discharge phase, a heating phase and a stop phase, wherein in the discharge phase, the drive circuit is controlled to output multiple first pulse signals to the power switch tube; the number of pulses that do not meet the preset conditions in the multiple first pulse signals is recorded by a counter to obtain The current count value; adjust the initial pulse width and / or pulse width increment of a plurality of first pulse signals in the next heating cycle according to the current count value, so that the driving pulse width and / or pulse width increment of the driving circuit can be automatically adjusted, Effectively suppress pulse current. The invention also discloses an electromagnetic heating device.

An evaluation method for ultra-high cycle fatigue performance of carburized steel belongs to the field of material fatigue performance evaluation methods. The specific steps of the method include: according to the characteristic requirements of the carburized layer of the material application target, adjust the carburizing process to obtain simulated samples of the structure state of the carburized layer, the transition layer and the matrix layer respectively, and use ultrasonic fatigue testing equipment to respectively test different samples. The fatigue performance of the samples in the microstructure state is evaluated by the lifting method, and the fatigue limit S-N curve is obtained. Through comparative analysis, the minimum value of different groups of samples can be regarded as the safe fatigue limit of the carburized steel. This method adopts ultrasonic testing method for fatigue testing, which can be used for 10 7 More than once a week, such as 10 9 , 10 10 Compared with rotational bending fatigue, the fatigue performance evaluation of ultra-high cycle carburized steel can shorten the evaluation time by more than 95%. This method can be applied to different material systems such as aluminum alloys, titanium alloys, etc., and can also be used to evaluate the fatigue properties of other materials with heterogeneous microstructures.

The invention provides a control method and device for preventing caterpillar bands from skidding and a milling machine. The control method for preventing the caterpillar bands from skidding includes the steps that the current revolving speeds of hydraulic motors corresponding to multiple caterpillar bands are obtained; whether skidding occurs or not is judged according to the current revolving speeds; under the situation that skidding occurs, the discharging capacity of the corresponding hydraulic motor of the caterpillar band which skids is reduced, and therefore system pressure is boosted and the caterpillar bands which do not skid can obtain driving force again. According to the control method and device for preventing the caterpillar bands from skidding and the milling machine, whether skidding occurs or not can be automatically judged according to the current revolving speeds of multiple hydraulic motors in real time, when skidding occurs, the discharging capacity of the hydraulic motor on the caterpillar band which skids is automatically reduced, and therefore the system pressure is boosted suddenly and the hydraulic motors of the caterpillar bands which do not skid can obtain the enough driving force again. Thus, the whole milling machine can recover to a continuous walking state and the problem that the hydraulic motor of the caterpillar band which skids is in a high-speed rotation state for a long time and is consequently heated and burnt is solved.

The invention relates to the field of textiles, and discloses a fiber force value gauge. The fiber force value gauge comprises a mounting plate, an air pipe, a cooling pipe, an inflation air bag madeof latex and a compressed air bag made of a plastic film. The air pipe and the compressed air bag are arranged on both sides of the mounting plate respectively. The compressed air bag is filled with gas which enables the compressed air bag to remain full and plump. One end of the air pipe runs through the mounting plate and is communicated with the compressed air bag. The central part of the air pipe is a transparent visible section, and a piston is slidingly connected with the inside visible section. The inflation air bag is fixed on the other end, which is away from the mounting plate, of the air pipe. The air pipe is communicated with the inflation air bag. A number of adsorption units capable of adsorbing water droplets are arranged on the outer surface of one side, which is away fromthe mounting plate, of the compressed air bag. The cooling pipe is arranged on the mounting plate. The cooling pipe is located in the compressed air bag. The invention provides the fiber force value gauge which can accurately measure the force value of fiber tension force.

The present invention discloses a control method of an electromagnetic heating system. The control method comprises the following steps of: controlling an electromagnetic heating system to enter a first heating period and a second heating period, wherein each heating period comprises a discharge phase, a heating phase and a stop phase, in the discharge phase of the first heating period, a drive circuit is controlled to output M first pulse signals to a power switch tube, and in the discharge phase of the second heating period, the drive circuit is controlled to output N second pulse signals tothe power switch tube; and recording the number of pulses which cannot meet a preset condition in the M first pulse signals by employing a first counter to obtain a first counting value, and recording the number of pulses which cannot meet the preset condition in the N second pulse signals by employing a second counter; and determining whether the drive circuit is abnormal or not according to a first counting value and a second counting value so as to effectively detect the abnormal condition of the drive circuit and reduce the loss. The present invention further discloses an electromagneticheating system and an electromagnetic heating device.