JP3008002B2 - Method for producing a structure having wear resistance - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a wear-resistant structure in which a wear-resistant material is formed of a cermet (including a cemented carbide), and this is joined to copper / copper alloy.

[0002]

2. Description of the Related Art Copper and copper alloys have good electrical conductivity and thermal conductivity, and thus have been used for structures used at high temperatures by providing an appropriate water passage therein. However, since copper / copper alloy alone is relatively soft, such as a blast furnace tuyere, if further wear resistance is required, nickel / chrome alloy or the like is overlaid on the surface of the copper / copper alloy. It was used with improved abrasion.

[0003]

However, even if the nickel-chromium alloy is overlaid on the surface of the copper-copper alloy,
Since wear is gradually caused by use, it is necessary to further improve the durability. For this reason, it is conceivable to join a cemented carbide that is a harder wear-resistant material than the nickel-chromium alloy to the surface of the copper-copper alloy. Therefore, there is a danger that the cemented carbide brazed during use may be peeled off by impact or the like, and that the brazing operation is troublesome. The present invention has been made in view of such circumstances, and it is an object of the present invention to provide a method for manufacturing a structure having abrasion resistance capable of relatively firmly joining a cermet and copper / copper alloy, and which can be manufactured relatively easily. Aim.

[0004]

According to the present invention, there is provided a semiconductor device comprising:
The method for manufacturing a structure having wear resistance described above is a method for manufacturing a structure in which a wear-resistant material is exposed from a surface, and a wear-resistant material having a predetermined shape is manufactured in advance using a cermet containing a metal having an affinity for copper. Then, the plurality of wear-resistant materials are fixed to a specific position of a mold, and after the wear-resistant materials are preheated, copper / copper alloy in a molten state is poured into the mold, and the wear-resistant materials and copper
The copper alloy is fixed by diffusion bonding. The method for manufacturing a structure having wear resistance according to claim 2 is a method for manufacturing a structure in which a wear-resistant material is exposed from the surface, wherein the method comprises the steps of forming a granular material comprising a cermet containing a metal having an affinity for copper. A wear-resistant material is manufactured in advance, and the wear-resistant material is put together with a molten metal made of copper / copper alloy into a mold having an open upper portion, the wear-resistant material is scattered on the surface, and a stamping die is mounted from above. In the above, the cermet includes a cemented carbide, and the metal having affinity for copper refers to, for example, copper, nickel, cobalt, molybdenum, and the like.

[0005]

According to a first aspect of the present invention, there is provided a method of manufacturing a structure having wear resistance, wherein a cermet contains a metal having an affinity for copper, thereby forming a granular or massive wear-resistant material. It is made of copper alloy. Therefore,
Since the cermet is heated to a high temperature, a metal having an affinity for copper contained therein is activated and causes interdiffusion from its interface. Thereby, the familiarity between the cermet and the copper / copper alloy is improved, and the cermet is diffusion-bonded, and a higher bonding strength than that of brazing can be obtained.

[0006]

EXAMPLES Next, examples embodying the present invention will be described to provide an understanding of the present invention. Here, FIG. 1 is a partial sectional view of a blast furnace tuyere to which one embodiment of the present invention is applied, FIG. 2 is a partial plan view thereof, and FIG.
It is a graph of PMA line analysis.

FIGS. 1 and 2 show an example in which an embodiment of the present invention is applied to a blast furnace tuyere 10. As shown in the figures, a wear-resistant material 11 made of a cemented carbide as an example of a cermet is used. It is arranged in the wear part of the blast furnace tuyere 10 of the water cooling structure. When the blast furnace tuyere 10 is manufactured, a cemented carbide containing a metal having an affinity for copper, such as cobalt, is used in advance.
As a result, a predetermined number of disk-shaped wear-resistant materials 11 are manufactured. Then, the wear-resistant material 11 is fixedly disposed at a predetermined position of the mold, and if necessary, the wear-resistant material 11 is preheated, and molten copper is injected into the mold. As a result, the wear-resistant material 11 is heated to a high temperature and activated, whereby the wear-resistant material 11 and the copper base material 12 are mutually diffused, and the wear-resistant material 11 is fixed to the copper base material 12 to form a blast furnace tuyere of a cast structure. 1
0 is manufactured, and the wear-resistant material 11 is embedded in the wear portion.

Here, the wear resistant material 11 of the blast furnace tuyere 10 is used.
EPMA by sampling the joint between
FIG. 3 shows the result of the line analysis. FIG. 3 (A), (B)
In the figure, the left side shows the copper base material 12 and the right side shows the wear-resistant material 11. A metal having no affinity for copper, such as tungsten (W), does not diffuse into the copper base material 12, but cobalt (C)
A metal having an affinity for copper as in o) is diffused in the copper base material 12. Then, the copper of the copper base material 12 also diffuses into the cemented carbide, and the copper base material 12 and the wear-resistant material 11 are firmly fixed to each other. As a result, the surface has abrasion resistance and has a water-cooled structure, so that the cemented carbide is also cooled by the copper base material 12 having good heat conduction, and a strong bonding state with the copper base material 12 is maintained. As well as maintaining wear resistance.

In the above embodiment, the blast furnace tuyere was described. However, even if the structure is made of a copper / copper alloy using a cermet containing a metal having an affinity for copper as a wear-resistant material. The invention applies. In addition, the method includes manufacturing a granular cermet, placing it together with a molten metal in a mold having an open top and dispersing it on the surface, and, if necessary, mounting a pressing die from the top.

[0010]

The method for manufacturing a structure having wear resistance according to the first and second aspects is apparent from the above description.
The cermet, which is a wear-resistant material, contains a metal that has an affinity for copper, and this creates a solid body in the form of granules or aggregates, which can be cast with copper / copper alloy. Are activated to cause mutual diffusion from the boundary surface, the familiarity between the wear-resistant material and the copper / copper alloy is improved, and the material is firmly joined and the wear-resistant material does not come off. Since copper and copper alloys have good electrical conductivity and thermal conductivity, it is possible to produce a solid material having properties not found in the cermet. Then, a wear-resistant material having a predetermined shape is manufactured by the cermet, and the wear-resistant material is arranged at a specific position of the mold so that hot water is poured, so that the operation is simple and mass production can be performed as necessary. . In particular, in the method of manufacturing a structure having wear resistance according to claim 2, since the granular wear resistant material is floated on the surface of the molten metal and the pressing die is placed thereon, the wear resistant material floating on the surface is pressed. A structure conforming to the shape of the pressing die can be manufactured.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view of a blast furnace tuyere to which one embodiment of the present invention is applied.

FIG. 2 is a partial plan view of the same.

FIG. 3 is a graph of an EPMA line analysis of a joint between a cermet and a copper / copper alloy.

[Explanation of symbols]

 10: blast furnace tuyere, 11: wear-resistant material, 12: copper base material

Continued on the front page (73) Patent holder 000143628 Kuroki Industrial Co., Ltd. 3-4-20 Jinyama, Yawatanishi-ku, Kitakyushu-shi, Fukuoka (73) Patentee 000196598 Kazuma Nishio 2-4-2 Takanosu, Yahata-nishi-ku, Kitakyushu-shi, Fukuoka 38-703 (73) Patent holder 000165181 Shizuo Yue 5-43-7 Nishi, Nishiami, Kokura-minami-ku, Kitakyushu-shi, Fukuoka (72) Inventor Shizuo Yuki 1934-2, Kushiami, Kokura-minami-ku, Kitakyushu-shi, Fukuoka (72) Nishio, inventor Issei 4-9-9, Anao, Yahatanishi-ku, Kitakyushu-city, Fukuoka Prefecture (72) Inventor: Honda Tsutoo 6-4-3, Kuchiamihigashi, Kokura-minami-ku, Kitakyushu-shi, Fukuoka (72) Inventor Yoji Wada Takasu-higashi, Wakamatsu-ku, Fukuoka Prefecture 1-9-11 (72) Inventor Katsuzo Kawada 1-15-1-402 Anao, Yahatanishi-ku, Kitakyushu-shi, Fukuoka (72) Inventor Shigemitsu Kanegae 2-11-10, Maeda, Yawata-Higashi-ku, Kitakyushu-shi, Fukuoka (72) Invention T. Takeda S. Takeda 4- 13-8 Shimonuki, Ogura-minami-ku, Kitakyushu-shi, Fukuoka (56) References JP-A-51-99627 (JP, A) Ryohei Naka, "Encyclopedia of Metallic Materials," First Edition, First Printing (Heisei 2-1-25) 147, 255-256 (58) Fields investigated (Int. Cl. ⁷ , DB name) B22D 19/00 B22D 19/02

Claims (2)

(57) [Claims] 1. A method for manufacturing a structure in which a wear-resistant material is exposed from a surface, wherein a wear-resistant material having a predetermined shape is manufactured in advance by a cermet containing a metal having an affinity for copper, and a plurality of the wear-resistant materials are molded. After the pre-heating of the wear-resistant material, the molten copper / copper alloy is poured into the mold, and the wear-resistant material and the copper / copper alloy are fixed by diffusion bonding. Of manufacturing a structure having wear resistance. 2. A method of manufacturing a structure in which a wear-resistant material is exposed from the surface, wherein a granular wear-resistant material made of a cermet containing a metal having an affinity for copper is manufactured in advance, and the wear-resistant material is opened at an upper portion. A method for producing a structure having abrasion resistance, comprising: placing the abrasion-resistant material on a surface of the mold together with a molten metal made of copper / copper alloy in a molded mold;