A kind of preparation method of multi-layer high temperature resistant composite anode

A composite anode and high-temperature-resistant technology, which is applied in welding equipment, manufacturing tools, metal processing equipment, etc., can solve the problems of reduced high-temperature life of materials, product pollution, and poor dynamic balance yield, so as to improve yield and ensure high-temperature resistance Performance, the effect of reducing dynamic balance deviation

Active Publication Date: 2021-02-05
XIAN REFRA TUNGSTEN & MOLYBDENUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The dynamic balance yield rate of the products obtained by the above method is relatively poor, and the introduction of new elements under high temperature work will inevitably cause problems such as product pollution and reduced high temperature life of materials.

Method used

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  • A kind of preparation method of multi-layer high temperature resistant composite anode
  • A kind of preparation method of multi-layer high temperature resistant composite anode
  • A kind of preparation method of multi-layer high temperature resistant composite anode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The preparation method of the present embodiment comprises the following steps:

[0031] Step 1. Take a tungsten circular plate with a diameter of 110 mm and a thickness of 10 mm according to the target product composite anode for machining to obtain the first metal layer 1, and polish the superimposed surface of it and the second metal layer to roughness Ra=1.6, take A molybdenum disc with a diameter of 110 mm and a thickness of 10 mm is machined to obtain the second metal layer 2, and its upper and lower surfaces are polished to a roughness Ra=1.6, and a three-high graphite disc with a diameter of 110 mm and a thickness of 40 mm is machined. The non-metallic layer 3 is obtained by processing, and its surface is polished to a roughness Ra=3.2, and then stacked sequentially from top to bottom;

[0032] Step 2, adjust the first solder 4 to paste and apply it on the upper surface of the second metal layer 2, and control the coating thickness to 0.1mm; the first solder 4 a...

Embodiment 2

[0039] The preparation method of the present embodiment comprises the following steps:

[0040] Step 1. Take a tungsten-rhenium alloy disc with a diameter of 110 mm and a thickness of 10 mm according to the target product composite anode for machining to obtain a ring-shaped first metal layer 1, and polish the superimposed surface of it and the second metal layer to a roughness of Ra = 0.8, take a TZM circular plate with a diameter of 110mm and a thickness of 40mm for machining to obtain the second metal layer 2, and polish its upper and lower surfaces to roughness Ra=0.8, take a three-high graphite with a diameter of 110mm and a thickness of 40mm The disc is machined to obtain the non-metallic layer 3, and its surface is polished to a roughness Ra=1.6, and then stacked sequentially from top to bottom;

[0041] Step 2, adjust the first solder 4 to paste and apply it on the upper surface of the second metal layer 2, and control the coating thickness to 0.05mm; the first solder ...

Embodiment 3

[0046] The preparation method of the present embodiment comprises the following steps:

[0047] Step 1. Take a tungsten-rhenium alloy disc with a diameter of 150 mm and a thickness of 10 mm according to the target product composite anode for machining to obtain an annular first metal layer 1, and polish the superimposed surface of it and the second metal layer to a roughness of Ra = 0.8, take a TZM circular plate with a diameter of 150mm and a thickness of 30mm for machining to obtain the second metal layer 2, and polish its upper and lower surfaces to a roughness Ra=0.8, take a three-high graphite with a diameter of 150mm and a thickness of 60mm The disc is machined to obtain the non-metallic layer 3, and its surface is polished to a roughness Ra=1.6, and then stacked sequentially from top to bottom;

[0048] Step 2, adjust the first solder 4 to be milky and paint on the upper surface of the second metal layer 2, and control the coating thickness to 0.05mm; the first solder 4...

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Abstract

The invention discloses a method for preparing a multi-layer high temperature resistant composite anode. The method comprises: 1. Prepare a first metal layer, a second metal layer and a non-metal layer respectively according to the target product composite anode, and stack them sequentially from top to bottom 2. Add the first brazing filler metal between the stacking surfaces of the first metal layer and the second metal layer; 2. Obtain a composite anode pre-weld with solder; 4. Carry out high-temperature vacuum hot-press welding on the composite anode pre-weld to form a transition layer between the second metal layer and the non-metal layer, and then process to obtain a composite anode. In the present invention, each layer of the composite anode is firstly processed, and then the layers are stacked in sequence, and brazing material is added between the layers for vacuum thermocompression welding to obtain the composite anode, and the high temperature diffusion connection between the layers is used to make the interface between the layers The transition rules and clear interface ensure the high temperature resistance of the composite anode and reduce the dynamic balance deviation of the composite anode.

Description

technical field [0001] The invention belongs to the technical field of anode material preparation, and in particular relates to a preparation method of a multilayer high temperature resistant composite anode. Background technique [0002] When the X-ray tube of CT machine is working, when the anode target is bombarded by electrons to generate X-rays, more than 98% of the energy will be converted into heat energy, and the heat is mainly concentrated on the anode. The heat is distributed on the rotating anode target surface with a certain inclination angle, forming a circular heating area. Since the rotating anode is used in a vacuum environment and under the condition of alternating heat load, the temperature of the entire anode target body can rise very high under continuous load. The ambient temperature of the X-ray tube is above 1300 ° C, and the heat dissipation mainly depends on heat radiation. Metal tungsten has the advantages of high melting point, low vapor pressure...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K1/00
CPCB23K1/0008
Inventor 温亚辉王喆张腾张勇淡新国刘晨雨金波张清
Owner XIAN REFRA TUNGSTEN & MOLYBDENUM
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