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Novel resistance-type ultrafast variable-temperature heating furnace and using method thereof

A temperature-variable heating, resistance technology, applied in electric furnace heating, lighting and heating equipment, furnaces, etc., can solve the problems of low temperature tolerance, material structure damage, loss of electrothermal function, etc., to achieve a wide temperature range and fast electrothermal response. , the effect of low input voltage

Inactive Publication Date: 2021-09-03
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of the Joule heat studies on these new heat sources are currently focused on the low temperature region below 200 °C. One of the reasons is that the tolerance temperature of these materials themselves or the guest components in contact with them is not high; 1000 °C or even 2000 °C Above ℃, the structure of most materials will be destroyed and the electric heating function will be lost.

Method used

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  • Novel resistance-type ultrafast variable-temperature heating furnace and using method thereof
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  • Novel resistance-type ultrafast variable-temperature heating furnace and using method thereof

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Embodiment 1

[0025] A new type of resistance-type ultra-fast temperature-variable heating furnace, which can quickly change the temperature in the furnace body by inputting different voltages or currents in an inert atmosphere or vacuum state, so as to reach the required test temperature and then synthesize the required materials.

[0026] A method for preparing copper metal-coated nano-carbon fiber thin wires at a high temperature in a novel resistance type ultra-fast temperature-variable heating furnace, specifically comprising the following steps:

[0027] First, a thin wire composed of nano-carbon fibers with a length of 4cm is cut with a blade, and copper metal is deposited on it by electrochemical deposition, and then it is placed in a resistance-type ultra-fast temperature-variable heating furnace. Input a rated voltage of 10V, and the monitored temperature rises rapidly to 1100°C in about 1 second. After holding the temperature for 2 minutes, the nano-copper metal can be completely ...

Embodiment 2

[0029] A new type of resistance-type ultra-fast temperature-variable heating furnace, which can quickly change the temperature in the furnace body by inputting different voltages or currents in an inert atmosphere or vacuum state, so as to reach the required test temperature and then synthesize the required materials.

[0030] A method for preparing silicon carbide fibers in a novel resistance type ultra-fast temperature-variable heating furnace, specifically comprising the following steps:

[0031] First weigh a certain amount of silicon powder and carbon powder, mix and grind them, then evenly coat the surface of the graphene film, twist them into fibers, and then put them into the heating furnace of the present invention. Input a rated voltage of 15V to the composite fiber under an argon atmosphere, and monitor the temperature to rapidly rise to 1350°C in about 2 seconds. After holding the temperature for 3 minutes, silicon powder and carbon powder react to produce silicon c...

Embodiment 3

[0033] A new type of resistance-type ultra-fast temperature-variable heating furnace, which can quickly change the temperature in the furnace body by inputting different voltages or currents in an inert atmosphere or vacuum state, so as to reach the required test temperature and then synthesize the required materials.

[0034] A method for preparing a tungsten carbide film in a novel resistance-type ultra-fast temperature-variable heating furnace, specifically comprising the following steps:

[0035] First, a certain amount of nano-tungsten powder is weighed, uniformly dispersed and filtered onto the surface of the carbon nanotube film, and then put into the heating furnace of the present invention. at 10 -4In the vacuum state of Pa, input a rated voltage of 20V to the composite film, and monitor the temperature to rapidly rise to 1600°C in about 1 second. After holding for 2 minutes, the tungsten powder and the carbon nanotube substrate react to produce tungsten carbide. The...

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Abstract

The invention discloses a novel resistance-type ultrafast variable-temperature heating furnace and a using method thereof, and belongs to the field of energy-saving materials and equipment. Firstly, a resistance-type heating body is prepared from a nano carbon-based electrothermal film, then the resistance-type heating body is fixed in a heating area in a furnace chamber through a clamp made of tungsten metal or insulating high-temperature-resistant ceramic, and the resistance-type heating body is combined with a stainless steel furnace body to obtain the ultrafast heating furnace. The heating furnace has the prominent characteristics that when the furnace body is in a vacuum or inert atmosphere environment, input electric work can be controlled to be different, so that accurate and rapid temperature control can be achieved for Joule heat generated by a resistor, and the resistance-type ultrafast variable-temperature heating furnace is obtained. The temperature change rate of the carbon-based resistor in the furnace can be 1000 DEG C / s or above, and the highest temperature can reach 3000 DEG C. Compared with a traditional heating mode of an external heat source (such as a muffle furnace), the ultra-fast variable-temperature heating furnace is faster in temperature changing, better in temperature controllability and more uniform in heating, meanwhile, the power consumption of the heating furnace is far smaller than that of traditional heating equipment, and the heating furnace has important application prospects.

Description

technical field [0001] The invention belongs to the field of energy-saving materials and equipment, and in particular relates to the design and application method of a novel resistance type ultra-fast variable temperature heating furnace. Background technique [0002] In modern industrial production and experimental research, it is very common to achieve rapid heating and rapidly reach a higher temperature, so there is a wide demand for materials and equipment that can be rapidly raised to a higher temperature by electric heating in a short period of time. Carbon-based electrothermal films such as carbon nanotubes have the advantages of fast electrothermal response, wide temperature range, and low input voltage, and can rapidly rise to high temperatures above 1000°C in a short period of time. They have broad application prospects in the field of energy-saving materials and equipment. . [0003] At present, the traditional materials used to generate Joule heat, such as metal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27B17/02F27D11/02F27D21/02F27D21/00
CPCF27B17/02F27D11/02F27D21/02F27D21/0014
Inventor 孟凡成徐斌刘士豪程盛赵一昕刘虎力量
Owner HEFEI UNIV OF TECH