Method for preparing laminar composite ceramic cutter material blanks by using electrojet deposition technology

A ceramic tool and layered composite technology, which is applied in the direction of manufacturing tools, ceramic molding machines, etc., can solve the problems of complex electrophoretic deposition molding equipment, affecting the quality of film formation, and easy cracking of green bodies, so as to achieve mass production and controllability Good, low processing cost effect

Inactive Publication Date: 2018-10-02
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method can realize the preparation of ceramic films with a layer thickness of 2 μm, and the interface of the molded body is smooth, but the electrophoretic deposition molding equipment is complicated, and other electrochemical reactions often occur during the deposition process, which affects the film quality.
[0004] In summary, the existing preparation process of layered composite ceramic cutting tools still has problems such as easy to leave pores in the cutting tool material, easy cracking of the green body, and complicated process. Therefore, it is necessary to develop a new preparation method of composite ceramic cutting tool materials , in order to overcome the above problems and obtain high-quality composite ceramic cutting tools

Method used

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  • Method for preparing laminar composite ceramic cutter material blanks by using electrojet deposition technology
  • Method for preparing laminar composite ceramic cutter material blanks by using electrojet deposition technology

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Embodiment 1

[0043] like Figure 1-2 Shown, a kind of method that utilizes electric jet deposition technology to prepare layered composite ceramic cutter material green body, comprises the steps:

[0044] 1) Mix WC+Ni mixed powder and TiC+Ni mixed powder with anhydrous ethanol and binder to make WC+Ni suspension and TiC+Ni suspension for later use; wherein WC and TiC are matrix phases, Ni is a metal phase, and the WC, TiC, Al 2 o 3 , Ni powder particle size is less than 100nm.

[0045] 2) The graphite mold 9 is placed on the substrate 8 of the XY motion platform 7 of the electrojet deposition device, and then the WC+Ni suspension and the TiC+Ni suspension in step (1) are respectively placed on the two sides of the electrojet deposition device. A syringe 1, ready for use;

[0046] 3) Set the moving distance of the XY motion platform 7 in the X and Y directions to 40 mm, the speed in the X and Y directions to 2 mm / s, and the grid spacing to 0.2 mm, and adjust the WC+Ni suspension 3 throu...

Embodiment 2

[0050] With embodiment 1, difference is: in step 1), with Al 2 o 3 +Ni mixed powder instead of TiC+Ni mixed powder.

Embodiment 3

[0052] With embodiment 2, difference is: in step 3) and 4), the flow of suspension is 1 * 10 -12 m 3 ·s -1 1. The output voltage of the high-voltage power supply is 0.1Kv, and the deposition height is 2mm.

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Abstract

The invention relates to a method for preparing laminar composite ceramic cutter material blanks by using an electrojet deposition technology, and belongs to the technical field of mechanical cutter manufacturing. The method comprises the following steps: (1) firstly, ceramic powder is uniformly mixed with a solvent and a binding agent to prepare suspension; and then, the suspension is positionedin an injector of an electrojet deposition device; (2) a mold is positioned on a motion platform of a substrate of the electrojet deposition device; the motion distance and speed and the grid gap of the substrate of the motion platform are set; the flow of the suspension, the voltage of a high-voltage power supply and the distance between a metal nozzle and a graphite mold are set; and the suspension is deposited in the mold to form a ceramic thin layer; and (3) the step (2) is repeated to obtain the laminar composite ceramic cutter material blanks. The electrojet deposition technology is usedfor depositing the ceramic cutter pulp thin layer on micro-nanoscale to realize ordered arrangement of materials in the laminar composite ceramic cutter material blanks.

Description

technical field [0001] The invention relates to the technical field of mechanical cutting tool manufacturing, in particular to a method for preparing a layered composite ceramic tool material blank by using an electric jet deposition technology. Background technique [0002] Layered composite ceramic tool material is a biomimetic structural material that simulates the microstructure of shells. Generally, different material layers are added between brittle ceramic material layers to overcome the defects of high brittleness of ceramics. Compared with ordinary ceramic knives, layered composite ceramic knives have the advantages of high hardness and bending strength, high fracture toughness, and good thermal shock resistance. [0003] At present, the common preparation methods of layered composite ceramic cutting tool materials mainly include tape casting, gel injection molding and electrophoretic deposition molding. The tape casting method is to use the relative movement of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28B1/32
Inventor 李学木邓建新张亮亮孙婕
Owner SHANDONG UNIV
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