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Method for preparing alloy sheet

A thin plate and alloy technology, which is applied in the field of improvement of the process of preparing alloy thin plates

Inactive Publication Date: 2005-11-30
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of preparing thin plates of metal materials and intermetallic compounds that are difficult to plastically deform, and provide a method for preparing alloy thin plates

Method used

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  • Method for preparing alloy sheet

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specific Embodiment approach 1

[0005] Embodiment 1: This embodiment is achieved through the following steps: 1. Prepare the material rods and substrates to be evaporated; 2. Put the material rods to be evaporated into water-cooled copper crucibles respectively, and install the substrates on the substrate shafts , and evacuate the vacuum chamber to 1~5×10 -3 Pa; 3. Set the process parameters; 4. Adjust the heating substrate to the specified temperature; 5. Heating and evaporating the separation layer rod to deposit the separation layer; 6. Stop the deposition of the separation layer, heat and evaporate the metal alloy rod, and deposit the metal alloy Seventh, stop the electron gun heating, wait for the temperature to drop, take out the substrate, and separate the metal alloy layer from the substrate to obtain an alloy sheet. The material rod to be evaporated in the step 1 includes a separation layer material rod and an alloy rod; the substrate material in the step 1 is low carbon steel or stainless steel, an...

specific Embodiment approach 2

[0006] Specific implementation mode two: (see Figure 1 ~ Figure 4 ) This specific embodiment first prepares superalloy GH4169 bar and separation layer material ZrO 2 . GH4169 bar diameter is Φ98.5±0.5mm, length 300, the length of the bar depends on the equipment, and the material must be dense and free of pores, which can prevent splashing during metal melting and evaporation, which will affect the surface quality of the deposited thin plate. Therefore, the GH4169 ingot is best prepared by vacuum smelting method, and then processed to the specified size by lathe. ZrO 2 The diameter of the bar is Φ68.5±0.5mm, and the length is 200mm. It is usually prepared by vacuum hot pressing and sintering. Before loading, turn on the circulating water and preheat the diffusion vacuum pump at the same time. Then start to load the rod material for evaporation, put two GH4169 rods into the third water-cooled copper crucible g3 and the fourth water-cooled copper crucible g4 respectively, t...

specific Embodiment approach 3

[0007] Specific implementation mode three: (see Figure 1 ~ Figure 4 ) The material composition (percentage by weight) of preparing Fe-based ODS alloy sheet in this specific embodiment is 73.5% Fe, 20% Cr, 5.5% Al, 1% Y 2 o 3 . First prepare the material to be evaporated FeCrAl alloy rod, Y 2 o 3 Rod and separation layer material ZrO 2 . The diameter of the FeCrAl rod is Φ98.5±0.5mm, and the length is 30-500mm. It is best to use vacuum smelting for the FeCrAl rod. Y 2 o 3 The diameter of the bar is Φ68.5±0.5mm, the length is 20-500mm, prepared by vacuum hot pressing and sintering, ZrO 2The size and production process of the bar are the same as in the second embodiment. Before loading, turn on the circulating water and preheat the diffusion vacuum pump at the same time. Then start to load the rods for evaporation, put 2 GH4169 rods into the third water-cooled copper crucible g3 and the fourth water-cooled copper crucible g4 respectively, one ZrO 2 Put the rod into th...

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Abstract

A method for preparation of alloy sheet, relates to the improvement of preparation technique of a allay sheet. It aims to settle the problem of preparing sheet with intermetallic compound and metallic material difficult to creep. The method for preparation in the invention is as following: preparing material bar and substrate to evaporate; putting the material bar to evaporate into water-cooled copper crucible, equipping the substrate with pivot of substrate, evacuating the vacuum chamber to 1-5*10-3Pa; regulating heating substrate to given temperature; heating, evaporating separation layer charge bar, depositing separation layer; stopping depositing, heating and evaporating metallic alloy bar, depositing metallic alloy layer, stopping heating, taking out the substrate, and separating metallic alloy layer from the substrate to prepare alloy sheet. The apparent merit of the invention is characterized in that the thickness of prepared alloy sheet is controlled among from 0.005mm to 5mm, and the material of sheet can be not only alloy, but also pure metal, intermetallic compound, oxide strengthened dispersion alloy, and ceramic.

Description

Technical field: [0001] The invention relates to an improvement of a process for preparing alloy thin plates. Background technique: [0002] With the development of science and technology, the high temperature performance requirements of materials are getting higher and higher. Especially in the field of thermal protection, the high temperature resistance of materials can no longer meet the requirements of use. Metal heat shield is a surface heat protection technology developed in the 1980s. Its design idea is to install a layer of heat-resistant plate on the surface of high-temperature structural parts to reduce thermal conductivity, so as to improve the high-temperature resistance performance of high-temperature structural parts, expand its application temperature, and prolong its service life. At present, the heat-proof plate structure adopted mainly adopts honeycomb plate or corrugated plate, and the honeycomb plate or corrugated plate is mainly made of alloy thin plat...

Claims

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Application Information

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IPC IPC(8): C23C14/24
Inventor 韩杰才赫晓东孟松鹤曲寿江陈贵清孙跃
Owner HARBIN INST OF TECH
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