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Arc heating method and device

An electric arc heating and electric arc technology, which is applied in the direction of electric heating devices, heating by discharge, electrical components, etc., can solve the problems of shortened service life of the heated body, damage of high-energy arc heating, and damage of the substrate, so as to achieve the effect of ensuring the service life

Pending Publication Date: 2019-12-31
韩振斌
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for this type of heated body, it is found in actual operation that heating by means of electric arc heating, under the bombardment of high-energy electric arc, easily causes damage to the matrix formed by powder pressing and / or sintering, causing the matrix to appear Cracks and breakage into fragments or particles shorten the service life of the heated body, especially for the larger size of the heated body, the more serious the damage caused by high-energy arc heating

Method used

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Examples

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Embodiment 1

[0040] The embodiment of the present application provides an arc heating method, which is suitable for heating a matrix formed by direct pressing of powder, a matrix formed by direct sintering of powder, or a product formed by pressing and sintering of powder, such as figure 1 As shown, the arc heating method includes the following steps: firstly, the metal electrode is configured to be in contact with the substrate, and the melting point of the metal electrode is configured to be higher than the target heating temperature; then, in a vacuum environment, bombard the metal electrode away from the substrate by means of arc bombardment One side is used to heat the metal electrode; finally, the substrate is heated by heat conduction through the metal electrode heated by the arc. Metal electrodes have the properties of high density and high temperature resistance, so under the bombardment of high current, the metal electrodes will not be cracked and damaged, and the high temperature...

Embodiment 2

[0048] In order to realize the arc heating method for heating the matrix formed by powder pressing and / or sintering provided in Example 1, the embodiment of the present application provides an arc heating device for heating the matrix formed by pressing and / or sintering powder matrix.

[0049] Such as figure 2 As shown, the arc heating device includes an arc generator 1, a vacuum chamber 2 and a substrate 3, the substrate 3 and the positive and negative electrodes of the arc generator 1 are located in the vacuum chamber 2, and the materials of the anode 4 and the cathode 5 of the arc generator 1 are both It is metal, the cathode 5 is configured to provide thermal energy to the base 3 in a heat conduction manner, and the anode is arranged on the side of the cathode 5 away from the base 3 . The specific working process of the arc heating device provided by the above-mentioned embodiment can be as follows: vacuumize the vacuum chamber 2 to keep it at a certain degree of vacuum,...

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Abstract

The invention relates to the technical field of arc heating, and specifically relates to an arc heating method and device, which are used for heating a base body formed by powder pressing and / or sintering. The arc heating method comprises the steps: configuring a metal electrode to be in contact connection with the base body, wherein the melting point of the metal electrode is higher than a targetheating temperature; in a vacuum environment, bombarding the side, deviating from the base body, of the metal electrode in an arc bombardment mode so as to heat the metal electrode; and heating the base body in a heat conduction mode through the metal electrode. According to the arc heating method and device for the base body formed by pressing and / or sintering powders, by utilizing the characteristic of high density and high temperature resistance of a negative electrode of an arc generator, the negative electrode is subjected to arc heating, and under the bombardment of large current, the metal electrode is not cracked and damaged, and the generated high temperature can be used for indirectly heating the base body formed by pressing or sintering the powders in a contact conduction manner, so that the service life of the heated base body is ensured.

Description

technical field [0001] The invention relates to the technical field of arc heating, in particular to an arc heating method and device for heating a matrix formed by pressing and / or sintering powder. Background technique [0002] Heating refers to the process in which a heat source transfers heat energy to a colder object to make it hotter, which belongs to the routine operation mode in life and production. Heating methods can generally be divided into direct heating and indirect heating. The existing heating methods mainly include arc discharge heating, electric current direct heating and microwave heating. Complex, and easy to damage microwave equipment at high temperatures, so arc discharge heating is more popular. [0003] Many existing heated bodies are manufactured by pressing or sintering powder or granular materials. Although the internal porosity decreases after pressing or sintering, a dense structure with high mechanical energy is formed. However, for this type o...

Claims

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Application Information

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IPC IPC(8): H05B7/20H05B7/06
CPCH05B7/06H05B7/20
Inventor 韩振斌
Owner 韩振斌
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