51results about How to "Precise control of heating time" patented technology

The present invention relates to a cylindrical pipe with internal hardened layer, its production method and special-purpose equipment. Said cylindrical pipe has small wall thickness and long length, its pipe wall has internal layer and external layer with different hardness, the hardness of its internal layer is greater than that of external layer, and said pipe is applicable for conveying material with high frictional coefficient. Its production method adopts the mode utilizing frequency to control pipe movement and proper hardening temp. range, and is special-purpose equipment is simple in structure, stable in operation, and can accurately control hardening temp., pipe moving speed nad depth of hardened layer.

The invention discloses an intelligent control system of a microwave oven. The intelligent control system comprises an oven body, an oven cavity, a heating unit and a control unit, wherein the oven body is provided with a setting unit and a display unit; a tray, second testing equipment and third testing equipment are arranged in the oven cavity; the tray is provided with first testing equipment; the control unit obtains a preset working mode which is collected by a mode button and selected by a user and a test value of the first testing equipment, and selects running time of the microwave oven in the preset working mode according to the test value; the control unit stores the running time in the control unit, obtains the test value of the second testing equipment and compares the test value with a preset value stored in the control unit; the control unit controls the heating unit to work according to a comparison result; and meanwhile, the control unit obtains image information, which is shot by the third testing equipment, of an object arranged on the tray, and transmits the image information to the display unit for display.

The invention relates to a cam shaft flame hardening automatic heat treatment machine tool. The machine tool comprises a feeding mechanism, a rotating mechanism, a heating mechanism, a cooling mechanism and a control mechanism controlling all the mechanisms of the machine tool to run cooperatively, wherein the feeding mechanism, the rotating mechanism, the heating mechanism, the cooling mechanism and the control mechanism are arranged on the machine tool in sequence. The invention further discloses a cam shaft flame hardening automatic heat treatment technology. The technology specially comprises the steps of automatic feeding, flame heating and cooling. By the adoption of the cam shaft flame hardening automatic heat treatment machine tool and technology, the technical problem of conducting automatic heat treatment on a cam shaft with the flame hardening heat treatment technology is solved, automatic precise operation is achieved during cam shaft flame hardening, hardening quality and stability are guaranteed, a feeding system and a discharging system of the cam shaft flame hardening automatic machine tool are high in automation degree, and production efficiency and economic effectiveness are further improved.

The invention discloses an esterified biological asphalt integrated preparation device and method. A control cabinet is provided with a rotating shaft extending into a heating cup, and a stirrer is located inside the heating cup; an oil outlet B of the heating cup is communicated with a reaction kettle through a pipe, an alcohol outlet of an alcohol storage tank is communicated with the reaction kettle through a pipe, a bottom outlet of a solid catalyst storage tank is communicated with the reaction kettle through a pipe, and a water outlet B of a water tank is communicated with the reaction kettle through a pipe; the reaction kettle comprises a conical shell and a centrifugal inner sleeve, a cavity is formed between the conical shell and the centrifugal inner sleeve, a heating unit is arranged in the centrifugal inner sleeve, a stirring blade is arranged in the centrifugal inner sleeve, a centrifuge drive motor is arranged in the reaction kettle, and the wall of the centrifugal inner sleeve is provided with centrifugal holes and a slide switch; an oil outlet A of the reaction kettle is communicated with an esterified biological asphalt container through a pipe, and a water outlet A of the reaction kettle is communicated with a water collection tank through a pipe. The esterified biological asphalt integrated preparation device is simple in structure, reasonable in design, convenient to use and operate and good in use effect.