초록 ▼

A method of manufacturing a structural part through diffusion bonding in solid state without secondary materials after stacking multi-sheet metal and a tool thereof are disclosed. The tool for diffusion boding of multi-sheet metal includes a top tool having a top gas inlet, a central tool coupled to

A method of manufacturing a structural part through diffusion bonding in solid state without secondary materials after stacking multi-sheet metal and a tool thereof are disclosed. The tool for diffusion boding of multi-sheet metal includes a top tool having a top gas inlet, a central tool coupled to the top tool for installing the multi-sheet metal inside the central tool, a bottom tool coupled to the central tool for supporting the multi-sheet metal and having a bottom gas inlet and a vacuum path for making a vacuum state or an inert gas environment, and a sealing plate interposed between the top tool and the central tool.

대표청구항 ▼

The invention claimed is: 1. A tool for diffusion bonding of multi-sheet metal comprising: a top tool having a top gas inlet; a central tool coupled to the top tool for installing the multi-sheet metal inside the central tool; a bottom tool coupled to the central tool for supporting the multi-sheet

The invention claimed is: 1. A tool for diffusion bonding of multi-sheet metal comprising: a top tool having a top gas inlet; a central tool coupled to the top tool for installing the multi-sheet metal inside the central tool; a bottom tool coupled to the central tool for supporting the multi-sheet metal and having a bottom gas inlet and a vacuum path for making a vacuum state; and a sealing plate interposed between the top tool and the central tool. 2. A tool for diffusion bonding of multi-sheet metal comprising: a press for pressurizing; a central tool coupled to the pressurizing press for installing the multi-sheet metal inside the central tool; a bottom tool coupled to the central tool for supporting the multi-sheet metal and having a bottom gas inlet and a vacuum path for making a vacuum state; and a sealing plate interposed between the press and the central tool. 3. The tool of claim 2, further comprising an insert interposed between the multi-sheet metal and bottom tools. 4. A method of manufacturing a structural part using a tool for diffusion bonding of multi-sheet metal including a top tool having a top gas inlet; a central tool coupled to the top tool for installing the multi-sheet metal inside the central tool; a bottom tool coupled to the central tool for supporting the multi-sheet metal and having a bottom gas inlet and a vacuum path for making a vacuum state; and a sealing plate interposed between the top tool and the central tool, the method comprising: removing air from the tool to make the inside thereof in a vacuum state and injecting an inert gas using the top gas inlet and the bottom gas inlet; heating the tool with the gas injected until a temperature of the tool reaches a predetermined target temperature; injecting an inert gas with a predetermined pressure through the top gas inlet when the temperature of the tool reaches the predetermined target temperature; and depressurizing the tool and cooling the tool down to an normal temperature after sustaining the pressure made by injecting the gas for a predetermined time. 5. A method of manufacturing a structural part using a tool for diffusion bonding of multi-sheet metal including a press for pressurizing; a central tool coupled to the pressurizing press for installing the multi-sheet metal inside the central tool; a bottom tool coupled to the central tool for supporting the multi-sheet metal and having a bottom gas inlet and a vacuum path for making a vacuum state; and a sealing plate interposed between the press and the central tool, the method comprising: removing air from the tool to make the inside thereof in a vacuum state and injecting an inert gas; heating the tool with the gas injected until the temperature of the tool reaches a predetermined target temperature; pressurizing the press with a predetermined pressure after the temperature of the tool reaches the predetermined temperature; and depressurizing and cooling the tool down to an normal temperature after sustaining the pressure made by the press for a predetermined time. 6. The method of claim 5, wherein in the injecting of the inert gas, the air is removed to make a vacuum state of about 10 Torr. 7. The method of claim 5, wherein the tool with the gas inserted is substantially heated until the temperature of the tool reaches a predetermined target temperature higher than the half of melting point of the multi-sheet metal. 8. The method of claim 7, wherein the multi-sheet metal is one selected from the group consisting of titanium alloy, and superalloy, and the heating temperature is higher than 700 <0>C. 9. The method of claim 5, wherein the predetermined pressure is about 20 to 40 Bar. 10. The method of claim 5, wherein the pressure is sustained for about 30 minutes to 2 hours. 11. The tool of claim 1, further comprising an insert interposed between the multi-sheet metal and bottom tools. 12. The method of claim 4, wherein in the injecting of the inert gas, the air is removed to make a vacuum state of about 10 Torr. 13. The method of claim 4, wherein the tool with the gas inserted is substantially heated until the temperature of the tool reaches a predetermined target temperature higher than the half of melting point of the multi-sheet metal. 14. The method of claim 4, wherein the predetermined pressure is about 20 to 40 Bar. 15. The method of claim 4, wherein the pressure is sustained for about 30 minutes to 2 hours.