Preparation device and preparation method of nearly-spherical titanium carbide coated high-speed steel composite powder

A composite powder and preparation device technology, which is applied in transportation and packaging, gaseous chemical plating, metal processing equipment, etc., can solve the problems of shortened life, performance decline, etc. control effect

Pending Publication Date: 2022-07-08
HENAN YINGCHUAN NEW MATERIAL INC +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the above-mentioned problems such as performance degradation and shortened service life caused by difficult regulation of TiC dendrite and feather-like morphology, the present invention proposes to directly introduce a near-spherical TiC reinforcing phase on the surface of the high-speed steel powder to prepare a near-spherical TiC-coated high-speed steel composite powder. Realize TiC morphology control from the powder source, greatly improving the mechanical properties and service life of high-speed steel products

Method used

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  • Preparation device and preparation method of nearly-spherical titanium carbide coated high-speed steel composite powder
  • Preparation device and preparation method of nearly-spherical titanium carbide coated high-speed steel composite powder

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Embodiment 1

[0041] This embodiment provides a method for preparing a near-spherical titanium carbide-coated high-speed steel composite powder. figure 1 In the device system shown, the preparation method comprises the following steps:

[0042] (1) The high-speed steel powder with a particle size of 1 μm-30 μm is placed in a fluidized state in the protective atmosphere of the fluidized bed reactor.

[0043] (2) On the basis that step (1) continues to be carried out, the titanium source and the reaction gas are synchronously introduced into the fluidized bed reactor, and mixed with the high-speed steel powder at a mixing temperature of 600 ° C (in other embodiments, it can also be 500°C, 700°C, 800°C, 900°C, 950°C, 1000°C), mixing time 60min (in other embodiments, it can also be 1min, 5min, 10min, 15min, 20min, 30min, 40min, 50min, 120min), The temperature of the titanium source is 20°C, and the gas velocity is 50ml (in other embodiments, it can also be 10mL / min, 20mL / min, 30mL / min, 70mL / mi...

Embodiment 2

[0048] This embodiment provides a method for preparing a near-spherical titanium carbide-coated high-speed steel composite powder. figure 1 In the device system shown, the preparation method comprises the following steps:

[0049] (1) The high-speed steel powder with a particle size of 1 μm-30 μm is placed in a fluidized state in the protective atmosphere of the fluidized bed reactor.

[0050] (2) On the basis that step (1) continues to be carried out, the titanium source and the reaction gas are synchronously introduced into the fluidized bed reactor, mixed with the high-speed steel powder, the mixing temperature is 800 ° C, and the mixing time is 90 min. The temperature is 40°C, the gas flow rate is 75ml, and the reaction gas gas flow rate is 150ml.

[0051] (3) After the reaction is completed, gas-solid separation is obtained to obtain titanium carbide-coated high-speed steel composite powder.

[0052] The titanium carbide-coated high-speed steel composite powder obtained...

Embodiment 3

[0054] This embodiment provides a method for preparing a near-spherical titanium carbide-coated high-speed steel composite powder. figure 1 In the device system shown, the preparation method comprises the following steps:

[0055] (1) The high-speed steel powder with a particle size of 1 μm-30 μm is placed in a fluidized state in the protective atmosphere of the fluidized bed reactor.

[0056] (2) On the basis that step (1) continues to be carried out, the titanium source and the reaction gas are synchronously introduced into the fluidized bed reactor, mixed with the high-speed steel powder, the mixing temperature is 900 ° C, and the mixing time is 120 min. The temperature is 60°C, the gas flow rate is 90ml, and the reaction gas gas flow rate is 260ml.

[0057] (3) After the reaction is completed, gas-solid separation is obtained to obtain titanium carbide-coated high-speed steel composite powder.

[0058] The titanium carbide-coated high-speed steel composite powder obtaine...

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Abstract

The invention relates to a preparation device and method for nearly-spherical titanium carbide coated high-speed steel composite powder. The device system comprises a stock bin, a fluidized bed reactor, a titanium source generator, a product collecting device and a tail gas treatment device. High-speed steel powder is subjected to vapor deposition in a fluidized state in the device, so that approximately-spherical titanium carbide coated high-speed steel composite powder is obtained, uniform distribution of titanium carbide on the microscopic scale is achieved, the shape of titanium carbide is adjusted to be converted into approximately-spherical shape from a feather shape and a rod shape, and the performance of powder metallurgy high-speed steel is remarkably improved.

Description

technical field [0001] The invention belongs to the field of powder metallurgy of steel alloys, in particular to a preparation method of a coated high-speed steel composite powder, in particular to a preparation device and a preparation method of a near-spherical titanium carbide coated high-speed steel composite powder. Background technique [0002] As a tool material, high-speed tool steel has a history of nearly 100 years. Due to its high strength, high hardness and high red hardness, it is still of great significance in the processing field. High-speed steel is often used to prepare cutting equipment such as taps, dies, drills, and knives. High-speed steel is developed from a TI-Mn self-hardening steel with a high carbon content. In addition to carbon, its main alloying elements are TI, Mo, Cr, and V. In addition, some high-speed steels add Co, Si, Ti, Nb, Zr, Hf, Cu, Ni, Mn and rare earth elements to improve the structure and performance. According to the role of allo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/16C23C16/32C23C16/442B22F1/065
CPCC23C16/32C23C16/442C23C16/4417
Inventor 李晓峰芦亚楠安文文崔景毅娄铁闯
Owner HENAN YINGCHUAN NEW MATERIAL INC
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