Amorphous igneous rock ceramic-based nano diamond film drawing mold preparation method
A technology of nano-diamond and igneous rock, which is applied in wire drawing die, metal material coating process, gaseous chemical plating, etc., can solve the problems of affecting the service life of the mold, hindering diamond nucleation, waste of rare metals, etc., to improve the service life, The effect of enhancing tissue stability and enhancing the degree of bonding
Active Publication Date: 2019-02-22
SHANDONG JIANZHU UNIV
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Problems solved by technology
[0002]
At present, most of the molds used in the wire industry are cemented carbide-based CVD diamond films. This type of mold is based on YG6 or YG8 tungsten-cobalt alloy cemented carbide, and a dense diamond film is deposited on the surface of the tungsten-cobalt alloy. The service life of cemented carbide mold is not long
A large number of experiments have proved that the ratio of CVD diamond coating mold failure due to film layer shedding to tool failure due to wear is about 10:1. The main reason is that the cobalt element in the tungsten-cobalt alloy hinders the nucleation of diamond. One or more brittle materials appear between the diamond film and the substrate, which affects the service life of the mold
[0003]
Due to the constraints of the cemented carbide itself, the mold is more likely to wear during the drawing process, resulting in a large amount of waste of rare metals such as tungsten and cobalt in the cemented carbide
Method used
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Experimental program
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Effect test
Embodiment Construction
[0022] Best embodiment of the present invention is given below:
[0023] The first step: put igneous rock, calcium oxide, titanium dioxide and graphite powder into an electric melting furnace in a ratio of 91:5:3:1 by mass fraction to obtain a melt, and draw the melt through a wire drawing bushing to obtain a non-ferrous metal. Crystalline igneous rock fibers.
[0024] The second step: take α-Al according to the mass fraction ratio of 45:20:2:10:3:2:23:1:0.7 2 O 3 Powder, TiC powder, Mo powder, Ni powder, CNTs whisker, amorphous igneous rock fiber, TZP powder and trace MgO, Y 2 O 3 powder. Using an appropriate amount of anhydrous ethanol as the dispersion medium, TZP and α-Al were respectively prepared 2 O 3 The suspension was magnetically stirred for about 30 minutes, and ultrasonically dispersed for 60 minutes; polyethylene glycol (PEG4000) with a molecular weight of 4000 was used as a dispersant, and an appropriate amount of anhydrous ethanol was used as a dispersion ...
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Abstract
The invention belongs to the field of drawing mold materials, and relates to an amorphous igneous rock reinforced ceramic-based nano diamond film drawing mold preparation method, in particular to an amorphous igneous rock reinforced carbon nano tube toughened ceramic-based nano diamond film drawing mold preparation method. According to the drawing mold preparation method, amorphous igneous rock fiber, carbon nano tube whiskers, tetragonal zirconia polycrystal powder, TiC powder, Mo powder, Ni powder and Al2O3 powder are mixed and sintered into matrix ceramic, and a layer of nano diamond film is deposited on the surface of the matrix ceramic through the chemical vapor deposition method. Compared with a hard alloy base CVD diamond film, a drawing mold prepared through the method is higher instrength, better in toughness and more excellent in abrasion resistance and fatigue resistance, and the service life of the mold is greatly prolonged.
Description
technical field [0001] The invention belongs to the field of drawing die materials, and relates to a preparation method of an amorphous igneous rock-reinforced ceramic-based nano-diamond thin film drawing die, in particular to a ceramic-based nano-diamond thin film toughened by amorphous igneous rock reinforced carbon nanotubes. Method for preparing the mold. Background technique [0002] At present, most of the molds used in the wire industry are cemented carbide-based CVD diamond films. Such molds are based on YG6 or YG8 tungsten-cobalt alloy cemented carbide, and a dense diamond film is deposited on the surface of the tungsten-cobalt alloy. The service life of cemented carbide molds is not long. A large number of experiments have proved that the ratio of the failure of the CVD diamond coating mold due to film shedding and the failure of the tool due to wear is about 10:1. One or several brittle materials appear between the diamond film and the matrix, which affects the ...
Claims
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IPC IPC(8): C22C49/02C22C49/14C22C47/14C23C16/27B21C3/02C22C101/10C22C101/06
CPCC22C47/14C22C49/02C22C49/14C23C16/27B21C3/025
Inventor 徐淑波刘建营王瀚林孙星景财年刘鹏
Owner SHANDONG JIANZHU UNIV