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Hot-pressing sintering machine and temperature uniformity control method thereof

A technology of hot pressing sintering and temperature control devices, which is applied in the direction of furnace control devices, lighting and heating equipment, furnace types, etc., and can solve problems such as uneven heating

Active Publication Date: 2016-10-26
ZHENGZHOU RES INST FOR ABRASIVES & GRINDING CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a hot press sintering machine to solve the problem of uneven heating caused by the overall heating method adopted by the traditional hot press sintering machine

Method used

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  • Hot-pressing sintering machine and temperature uniformity control method thereof
  • Hot-pressing sintering machine and temperature uniformity control method thereof
  • Hot-pressing sintering machine and temperature uniformity control method thereof

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Embodiment Construction

[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0021] Such as figure 1 As shown, the upper electrode in the hot pressing sintering machine is divided into four parts, named: electrode block 1, electrode block 2, electrode block 3 and electrode block 4, each part is an isosceles right triangle. These 4 parts are insulated, and the insulation methods are as follows: insulation is set by insulating materials, or a certain distance is separated to realize the insulation, and the optional distance range is 1-10mm. There are no special requirements for the lower electrode, such as no treatment for the lower electrode, just use it directly, such as figure 2 As shown, it is a conductive whole. Therefore, the positional relationship between the upper and lower electrodes and the graphite mold is as follows image 3 shown. Since the upper electrode is divided into four parts, corresponding to these four electr...

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Abstract

The invention relates to a hot-pressing sintering machine and a temperature uniformity control method thereof. The sintering machine comprises two electrodes, n temperature sensors and a temperature control device. The first electrode is divided into n electrode sections arranged in a mutual insulation mode, and n is larger than or equal to two. Each electrode section is connected with a corresponding power supply line and used for leading-in of an electric current, and thus the electric current flows among the corresponding electrode section, a mold and the second electrode. The temperature sensors are in one-to-one correspondence with the electrode sections and used for detecting the temperature of the corresponding electrode sections. The temperature control device is in sampling connection with the n temperature sensors and in control connection with all the power supply lines and used for correspondingly adjusting electric currents in the corresponding power supply lines according to collected temperature values. Temperature on the electrodes of all parts can be made to tend to equality, then temperature in a graphite mold is controlled and distributed uniformly, the condition of a nonuniform temperature field is eliminated, thus uniformity of performance of sintered products is ensured, and the quality of the sintered products is improved.

Description

technical field [0001] The invention relates to a hot pressing sintering machine and a method for controlling temperature uniformity thereof. Background technique [0002] As a common industrial equipment, hot pressing sintering machine has a wide range of applications. The hot press sintering machine has two electrodes. According to the positional relationship with the graphite mold, these two electrodes are the upper electrode and the lower electrode respectively. The graphite mold is located between these two electrodes. The mold applies a large current to make the mold rely on its own resistance to heat and indirectly heat the powder material in the mold, and at the same time apply axial pressure to the powder in the mold, so that the powder material coalesces under the action of temperature and pressure to form a specific shape bulk material. Hot press sintering machine is widely used in high temperature sintering of powder metallurgy, superhard material products, cer...

Claims

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Application Information

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IPC IPC(8): F27B21/00F27B21/14
CPCF27B21/00F27D19/00F27D2019/0003F27D2019/0037
Inventor 韩欣徐帅牛俊凯
Owner ZHENGZHOU RES INST FOR ABRASIVES & GRINDING CO LTD
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