31results about How to "Control the heating rate" patented technology

The invention belongs to the technical field of production of duplex stainless steel products used at low temperature and particularly relates to a thermal treatment method for improving low-temperature impact toughness of austenite-ferrite stainless steel with high requirements for performance indexes. The thermal treatment method comprises the steps: feeding forged austenite-ferrite stainless steel into a furnace at the feeding temperature of not greater than 350 DEG C and performing twice preheating; performing solution treatment; performing cooling, feeding the austenite-ferrite stainless steel into clear water with the initial temperature smaller than 10 DEG C, and retaining the austenite-ferrite stainless steel for 20 minutes at the cooling speed of 4-6 seconds/mm. An austenite-ferrite stainless steel solution treatment process comprises the steps of (1) heating, namely controlling heating speed, preheating temperature, solid solution temperature and retaining time at a low-temperature section, reducing thermal stress and simultaneously obtaining good duplex structural proportion and (2) cooling, namely adopting a quick low-temperature long-time water-cooling mode to prevent precipitation due to fragility phase and remarkably reducing the plasticity and the toughness of the steel.

A construct for heating a food item in a microwave oven comprises a base (102), a wall (104) extending upwardly from the base (102), a microwave energy shielding element (108) overlying at least a portion of the wall (104), and a microwave energy diffusing element (112) circumscribed by the microwave energy shielding element (108), where the microwave energy diffusing element (112) includes a plurality of microwave energy reflective elements (116) within a microwave energy transparent area (114).

The invention relates to the technical field of metalloscopes, in particular to a high-resolution high-temperature metallographic structure analyzer which comprises a metalloscope equipped with a digital camera head, a hot stage, a cooling water circulation system of a window, a cooling water circulation system of a warm stage upper cover and a microcomputer embedded with an image analysis system. The analyzer is characterized in that the signal output end of the digital camera head is connected with the signal input end of the microcomputer, and the outer wall of the hot stage is respectively provided with a cooling water inlet, a liquid nitrogen cooling opening, a vacuum interface, a heating power supply interface, a thermocouple interface, a cooling water outlet and a reserved function interface. Compared with the prior art, by the invention, cooling speed and heating speed can be shown by numerical values and can be controlled more visually and conveniently; and in addition, the flow rate of the cooling water can be controlled in an intelligent way. The internal vacuum degree of the hot stage of the device can reach 10-3Pa, which can prevent a metal sample from being oxidized at high temperature. The reserved function interface of the device greatly widens the application scope of the high-temperature metalloscope.

The invention belongs to the technical field of production of duplex stainless steel products used at low temperature, and in particular relates to a treatment method for improving the toughness of steel. 1) After the steel is forged, the furnace is charged at a furnace temperature not higher than 350°C and preheated twice. ; then solid solution treatment; then cooling, put into clear water with an initial temperature of less than 10°C, and keep it for 20 minutes at a cooling rate of 4-6 seconds/mm. The steel solution treatment process includes the following steps: ① heating, Control the heating rate, preheating temperature, solid solution temperature and holding time in the low temperature section to reduce thermal stress and obtain a better two-phase structure ratio; The precipitation will significantly reduce the plasticity and toughness of steel.

The invention provides a novel vacuum induction melting furnace. The novel vacuum induction melting furnace comprises a cooling system, a high frequency induction machine, an insulating partition plate, a high frequency induction heating coil, a temperature detector, a crucible, a temperature display screen, an air inlet valve, a vacuum gauge, an air inlet valve, a vacuum heating furnace, an observation window, a vacuum pump and a vacuum bellows. The cooling system is connected to the high frequency induction machine through a cooling water pipe; the insulating partition plate is installed onthe side part of the vacuum heating furnace; the high frequency induction heating coil penetrates through the insulating partition plate and enters into the vacuum heating furnace; and the temperaturedetector is disposed in the vacuum heating furnace. The high frequency induction heating coil, the temperature detector and the cooling system are arranged, the novel vacuum induction melting furnacehas reasonable structure and low unit energy consumption, effectively improve the heating efficiency of a NdFeB magnet raw material, facilitate the control of the heating temperature, effectively protect the heating device, and facilitate the market promotion and application.

Disclosed is a color toner production technology for copiers and laser printers; the color of the toner has three primary colors of red, blue, yellow, and black color; the toner can change the raw materials and displays the fluorescent color; or the same powder of the toner can be displayed as two colors from different point of views; the toner of the invention can print a variety of color presswork with bright and fluorescent color and has anti-counterfeiting function; as the toner has small particle size, small inner layer proportion and less using amount, the toner enables the presswork to be clearly printed and is especially suitable for printing micro-data and images; through magnetic separation technology, the semi-finished products are provided with soft (or hard) magnetic properties and can be fully utilized; the tacky (fixing) temperature is 36-38 DEG C lower than that of the current toner; moreover, the toner of the invention has low energy consumption and short fixing time, and can extend the service life of the equipment and improve the printing and copying speed, which is an ideal upgrade product for the existing toner.

The invention discloses a steam hot water boiler. The steam hot water boiler comprises a cooker and a stove, wherein the stove comprises a combustion device and an adjusting module; the combustion device comprises a combustion cylinder, a feeding pipe and an air inlet pipe; the adjusting module comprises a first door plank, a second door plank and a third door plank; the flow of external air entering a combustion space of the combustion cylinder through the feeding pipe is adjusted by controlling the opening degree of the first door plank; and the flow of external air entering the combustion space of the combustion cylinder through the air inlet pipe is adjusted by controlling the opening degree of the second door plank and the third door plank. Therefore, by adjusting the flow of the external air entering the combustion space of the combustion cylinder through the feeding pipe and the air inlet pipe in a multi-section mode, the effect of adjusting the firepower in a multi-section modeis achieved, and then the heating speed on cold water can be controlled.

The invention discloses clothes which can keep a constant temperature, can control the constant temperature speed and does not need to be charged. The invention belongs to household articles for daily use. The green constant-temperature clothes overcome the technical defects that the constant-temperature speed of the constant-temperature clothes in the prior art cannot be controlled so that the temperature of the clothes is suddenly high or low, heating or cooling is frequently started, and charging is needed. The clothes mainly comprise a power supply device (3), a heating and refrigerating speed regulator (2), a reversing switch (6), a mechanical temperature controller (10), a temperature changing box (12), a pump (13), a rubber hose (5), a component bearing medium (7), a lead (9), a liquid (which is not marked in the rubber hose (5) and a water tank (12-5)) and the like. According to the green constant-temperature clothes, the liquid is cooled or heated according to the refrigerating and heating principle of the semiconductor cooling piece (12-4), and then the liquid is circulated in cycles through the pump (13) and the rubber hose (5). And the constant-temperature comfort is successfully kept for people.

The invention discloses a control method of an intelligent cigarette cavity heating control system for a lower-temperature cigarette. The cigarette cavity heating control system comprises multiple heating needles, multiple heating resistors, a temperature sensor, an airflow sensor, a data storage module, a control module and a battery. The heating needles are stabbed into a cigarette cavity containing tobacco, the heating needles are connected to all the heating resistors, and the airflow sensor is arranged at a suction port of the bottom of the cigarette cavity; the control module is electrically connected to all the heating resistors separately, the airflow sensor is in signal connection with the control module, and the data storage module is in signal connection with the control module.The control module reads information of the suction frequency during previous use, the smoke amount generated by the heating resistors per unit and the smoke passing amount through multi-time suctionto calculate the number of heating resistors required by single time and average suction time of single time. The heating area and heating time are controlled by all the heating resistors. Therefore,according to habits of smokers, the heating speed of tobacco shreds is controlled, and the situation is avoided that since tobacco shreds cannot be sufficiently used, tobacco shreds and electric energy are wasted.

The invention discloses a direct heating type constant-temperature dryer. The direct heating type constant-temperature dryer comprises an air inlet, an electric adjusting valve arranged at the tail end of the air inlet, condensers arranged below the right portion of the electric adjusting valve, a centrifugal fan arranged at the right side of the condensers, an air outlet arranged below the centrifugal fan, an evaporator arranged below the condensers, circulating conveying pipes connected with the two ends of the condensers and the two ends of the evaporator, a draught fan arranged at the left side of the condensers and a dehumidifying port arranged at the left side of the draught fan. According to the direct heating type constant-temperature dryer, since the two condensers are obliquely arranged, the heating area of fresh air is enlarged, the air supply volume of the fresh air is adjusted in combination with the electric adjusting valve, the heating speed of the condensers on the air is controlled, the heating speed is high, the heating effect is good, the energy ratio of the working effect of a main engine is increased, and the energy saving effect is achieved; compared with the traditional technology, cyclic heating of the air is not needed, and the air outlet can be externally connected with a heat conveying pipe to form a certain distance, so a fire can be prevented, and the safety of operation is enhanced.

A constant-temperature irrigation system relates to the technical field of agricultural irrigation and is used for solving the problem of low temperature of irrigation water in winter in the prior art. A constant-temperature irrigation system is characterized in that the constant-temperature irrigation system comprises a buffer water tank, a variable-frequency electric heating boiler, a first variable-frequency water pump, a second variable-frequency water pump, a water and fertilizer all-in-one machine, a water distribution device and a plurality of irrigation pipelines distributed in different sunlight greenhouses, all irrigation water paths are connected with the water outlet end of the water distribution device, and the water and fertilizer all-in-one machine comprises a water inlet pipe and a fertilizer injection pipe; the first variable-frequency water pump, the variable-frequency electric heating boiler and the buffer water tank are connected in series, so that water in the water tank is circularly heated through the variable-frequency electric heating boiler. The constant-temperature irrigation device has the advantage of being beneficial to constant-temperature irrigation.

The invention discloses a plant illumination system based on laser pulses, and belongs to the field of plant cultivation equipment.The plant illumination system based on the laser pulses comprises an illumination incubator body and side illumination fan blades symmetrically and rotatably connected to the illumination incubator body, and a plurality of power-on bottom plates are fixedly installed on the side illumination fan blades; a fine adjustment frame is fixedly mounted at the front end of the electrified bottom plate, light direction adjusting assemblies are symmetrically and fixedly mounted on the inner wall of the fine adjustment frame, and through cooperative use of the light direction adjusting assemblies and the shunting supporting plate, the light irradiation direction of the pulsed accent light can be finely adjusted, and the accuracy of the illumination direction is effectively improved; the illumination utilization rate is effectively improved, the illumination requirement of plant cultivation is met, the photosynthesis efficiency of plants is improved, the growth of cultivated plants is facilitated, and the light-transmitting adjusting assembly is used in the built-in heat absorption protection layer and the external transparent protection cover.

The invention discloses a device for simultaneous growth of a plurality of silicon carbide single crystals. The device comprises a graphite crucible, an induction heating coil and a driving mechanism. The driving mechanism is located above the outside of the graphite crucible, the induction heating coil is located outside the graphite crucible, and the graphite crucible is cylindrical and comprises a main chamber located at the lower part and an auxiliary chamber located at the upper part. The bottom of the main chamber is filled with silicon carbide source powder. The auxiliary chamber comprises a first auxiliary material groove with the bottom filled with the silicon carbide source powder and a second auxiliary material groove with the bottom filled with halide auxiliary materials. Through the special design of the structure of the growth device, the corresponding requirements on the growth environment in the growth process of a plurality of silicon carbide single crystals are met, and a plurality of high-quality silicon carbide single crystals are obtained in the same batch, so that the growth efficiency of the current silicon carbide single crystals is remarkably improved.

The invention provides an air electrical heating device which comprises an air inlet segment, a heating segment and an air outlet segment. The air inlet segment is provided with a buffering membrane which is used for lowering the flowing speed of the air, and an air buffering cavity is formed between the buffering membrane and the heating segment; the air outlet segment is provided with a temperature sensor, and the temperature sensor is in electric connection with a temperature analyzer; the heating segment is of a round barrel shape and comprises a shell body, a thermal-insulation layer, a heating layer and a multihole heating ceramic material from outside to inside in sequence; the heating layer is internally provided with a screwy heating wire, the multihole heating ceramic material is internally provided with a plurality of plate-shaped heating patterns, wherein the multiple plate-shaped heating patterns are connected through a heating rod; the heating rod is in electric connection with the heating wire and is electrically connected to an external controller; and the controller is in electric connection with the temperature analyzer, and the electrical heating power of the heating wire and the heating rod is controlled by testing the temperature of the air outlet segment.