Metal powder semi-automatic drying device

A semi-automated, drying device technology, applied in the direction of heating devices, drying solid materials, drying chambers/containers, etc., can solve the problems of flammability, non-continuous production, oxygen increase, etc., and achieve stable heat source, low labor intensity and convenient operation Effect

Pending Publication Date: 2020-06-16
湖南瑞华新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to use low-temperature waste heat to quickly dry metal or alloy powder, eliminate the technical problem of easy oxidation and combustion in the box-type resistance furnace, and at the same time solve the problem of oxygen increase that may occur in the vacuum drying furnace, which cannot be continuously produced. problems, to achieve the technical effect of semi-automatic fast drying and energy saving

Method used

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  • Metal powder semi-automatic drying device
  • Metal powder semi-automatic drying device

Examples

Experimental program
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Effect test

Embodiment 1

[0035] In this example, the iron-based matrix powder used in the diamond product industry is used. The production process is cooling in nitrogen atomized water, the main element is Fe-P-Cu-C alloy powder, and the drying is carried out according to the usual actual production process; Put six trays of powder into the oven, and set the control temperature within 130°C. During the drying process, the materials in the trays are turned manually. During this process, some trays are dried first, and some trays are dried later, indicating that the temperature in the furnace is uneven. It took three hours and forty-five minutes to dry completely, but the color of the powder has changed with the naked eye.

[0036] The drying step that above-mentioned powder is carried out using device of the present invention is:

[0037] ① Open the water inlet valve 602 to let the residual hot water fill the U-shaped pipe 6;

[0038] ②Open the feed furnace door 9, put in two trays of materials and cl...

Embodiment 2

[0042] Use device of the present invention to carry out dry treatment to Fe-Cr-B-Si-C thermal spray welding alloy powder, and processing technology still carries out by the production technology of embodiment 1; Send 50 kg of Fe-Cr-B-Si-C powder and Fe-P-Cu-C powder to an external unit, and dry them in a vacuum oven. The drying temperature is set within 150°C, and it takes five hours to complete the drying fifty minutes.

[0043] Carry out oxygen content analysis to powder at last, the result is: the dry Fe-Cr-B-Si-C powder O of device of the present invention 2 Content 0.826%, vacuum-dried Fe-Cr-B-Si-C powder O 2 O content of 0.83%, vacuum-dried Fe-P-Cu-C powder 2 The content is 0.195%.

[0044] It can be seen that when the content of active metals in the powder is high, drying under vacuum will also increase oxygen. The reason is that ① the powder cannot be turned under vacuum, which prolongs the drying time. ② The temperature of vacuum drying is high and the time is long...

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Abstract

The invention discloses a metal powder semi-automatic drying device. The metal powder semi-automatic drying device comprises a furnace body, a nitrogen input device and an air draft device, so that gas in a furnace is smooth, water vapor is favorably taken away, a manipulator is arranged, powder caking is eliminated, the powder drying speed is increased, waste heat of low-temperature circulating cooling water flowing out of the medium-frequency smelting furnace is used for drying powder, the oxygenation behavior in the powder drying process is eliminated, and the metal powder semi-automatic drying device is a novel device which is environment-friendly and energy-saving and realizes line production.

Description

technical field [0001] The invention relates to the field of powder metallurgy powder making equipment manufacturing, in particular to a metal powder semi-automatic drying device. Background technique [0002] The first process of powder metallurgy is to prepare powder raw materials. There are many methods of powder making, such as protective ball milling, chemical hydrometallurgy powder making, and atomization powder making is the most widely used nowadays. The atomization method is a kind of powder making method with low pollution and fast speed. It is divided into air-jet air cooling, air-jet water cooling and water spray water cooling. All water-cooled powders cannot be separated from the drying device. [0003] Powder drying is a process, but also a science, because it involves the quality of the powder, the process of the subsequent treatment of the powder, especially for flammable and explosive powders, and also involves safety production issues. [0004] At present...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B11/00F26B5/04F26B25/12F26B23/10F27D17/00
CPCF26B5/04F26B11/00F26B23/10F26B25/12F27D17/004Y02P10/25Y02P70/10
Inventor 胡跃华黄圣坤张春友
Owner 湖南瑞华新材料有限公司
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