55results about How to "Shorten the heating cycle" patented technology

The invention discloses a heat stamping forming board heating furnace. The board heating furnace comprises a furnace wall and conveying rollers for conveying a heated board. A board input opening and a board output opening are formed in the front end and the back end of the furnace wall respectively; and the conveying rollers are driven by an external driving system to rotate so as to convey the board. The furnace wall and furnace interior space defined by the furnace wall are sequentially divided into an induction area and a radiation area in the direction of board conveying. A partition board is arranged between the induction area and the radiation area, and a partition board channel is arranged in the middle of the partition board; the induction area is provided with a supporting part, an induction coil and a heating controller; the radiation area is provided with radiation pipes; and protection gas connection pipes are arranged on the furnace wall. The board heating furnace has the advantages that the board on the heat stamping forming production line is fully austenitized, and meanwhile the requirements for the continuous production takt and energy saving are met; the quality of heat formed products and quality stability are ensured; and heating efficiency is improved; and the heating period is shortened, and the heat energy loss is reduced.

A magnetic heat pump cycle has a first to a fourth steps, which are repeatedly carried out. In the first step, a movement of heat medium is stopped by a pressure valve and a pressure accumulating tank and a magnetic field is applied by a magnetic-field control unit to a magnetic working material. In the second step, the pressure valve is opened so that the heat medium flows in a working chamber from a second axial end to a first axial end, and the magnetic field is increased depending on a moving speed of the heat medium. In the third step, the movement of the heat medium is stopped and the magnetic field is decreased. In the fourth step, the heat medium is moved in a reversed direction and the magnetic field is decreased depending on the moving speed of the heat medium.

A heat dissipating device of an electromotor is a composite cooling device driven in a powerless manner and used for stirring a cooling liquid applied on a surface of a casing of the electromotor. The heat dissipating device includes a pair of bearings fitted on the casing, and a roller disposed at outer ring seats of the pair of bearings. The roller has a sealed chamber therein, the chamber covers a surface of the casing located in a disposition region of the bearings, and at least one outer blade is disposed outside the roller. Thereby, composite heat dissipating of liquid cooling and air cooling of the electromotor is implemented with a cooling liquid injected into the chamber of the roller and a wind force applied on the outer blade.

The invention relates to a furnace for testing the limit of fire resistance of a tunnel fire-proof protective material, which is characterized in that when a sample is tested, the sample is covered at the top of a furnace body, and a burning device is placed at the bottom of the sample to be used for heating the sample. The furnace body comprises a furnace lining, short-flame burners, a sample clamping and turning device and a cellular heat absorbing board, wherein the furnace lining in a modular structure is arranged in a furnace shell; the cellular heat absorbing board is arranged at the opening part of the bottom of the furnace shell; the cellular heat absorbing board is connected with a water-cooled multi-tube cooler; the sample clamping and turning device is arranged at one side of the furnace shell; the internal dimension of the furnace lining is matched with the external boundary dimension of the sample; and a plurality of temperature thermocouples and the short-flame burners are sequentially arranged in the furnace lining from top to bottom. The invention has the advantages that (1) the sample is arranged at the top of a furnace chamber and is reasonably heated, thereby reducing the fuel consumption and enabling the transverse temperature of the furnace chamber to be more uniform and stable; (2) the corner-type electric sample clamping and turning device is adopted, thereby relieving the labor intensity of experimenters and ensuring that the experiment operating process is more simple, more convenient and more reliable; and (3) the flue gas emission temperature reaches the specified emission standard.

The invention discloses an automobile gearbox gear heat treatment device which comprises a heat treatment container, wherein the heat treatment container comprises a heat treatment tank, a heat treatment tank temperature control device, a heat treatment solution, a material supplementing device, a tank solution observing sensor, a lampblack treatment device and a heat treatment solution circulating device; the heat treatment solution circulating device comprises a liquid inlet pipeline, a motor pump and a liquid discharge pipeline which are connected in sequence; the heat treatment solution is located at the bottom of the heat treatment tank, the heat treatment tank temperature control device is provided with an electric heater soaked in the heat treatment solution, the heat treatment solution contains ingredients; and the tank solution observing sensor monitors the temperature of gas and the heat treatment solution in the heat treatment tank and the real-time concentration content of the ingredients. The device can perfectly control all technological details of heat treatment, can adjust and correct differences between actual heat treatment process and ideal treatment process in real time, is steady in heat treatment quality, efficient and energy-saving, and can reduce pollution, promote environmental protection and save heat treatment cost.