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Iridium plate as well as processing method thereof and iridium crucible

A crucible and rolling mill technology, applied in chemical instruments and methods, crystal growth, post-processing equipment, etc., can solve problems such as cracking, iridium crucible/product damage, and affecting the service life of iridium crucible/product

Inactive Publication Date: 2018-08-21
陕西三毅有岩材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of grain growth, the microscopic defects of the original grain are easy to be enriched at the grain boundary, and the grain boundary becomes a weak area after the grain is coarsened, which easily leads to intergranular cracking, resulting in failure and damage of the corresponding iridium crucible / product, affecting Iridium crucible / product service life

Method used

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  • Iridium plate as well as processing method thereof and iridium crucible
  • Iridium plate as well as processing method thereof and iridium crucible
  • Iridium plate as well as processing method thereof and iridium crucible

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] This example details the method for preparing the iridium plate of the present application. details as follows:

[0055] The first step: smelting iridium ingot, the iridium ingot can be 3-8 kg, specifically 6 kg in this embodiment.

[0056] The second step: put the iridium ingot in the first step into a high temperature furnace for heat preservation, the heat preservation time is 1 hour, and the temperature of the medium temperature furnace is 1300~1600 °C;

[0057] The third step: send the iridium ingot into the rolling mill along the long axis direction for rolling deformation, and the initial deformation is 15%;

[0058] The fourth step: Send the iridium plate deformed in the third step into a special rolling mill for deformation. The deformation amount is 20%. The distance between the lowest points is 100~300 microns;

[0059] Step 5: Repeat step 4 until the thickness of the iridium plate is 2mm.

[0060] After the above steps, the iridium plate is obtained, whi...

Embodiment 2

[0062] The application also provides another method for preparing the iridium plate of the application, the method is as follows:

[0063] The first step: smelting iridium ingot, the iridium ingot can be 3-8 kg, specifically 6 kg in this embodiment.

[0064] The second step: put the iridium ingot in the first step into a high-temperature furnace for heat preservation, the heat preservation time is 1 hour, and the temperature of the heating furnace is 1300~1600°C;

[0065] Step 3: Send the iridium ingot into the rolling mill for repeated rolling and deformation until the thickness of the finished product is 1.3~1.4 times;

[0066] Step 4: Coat both sides of the iridium plate with zirconia, and the coating thickness is 100-300 microns;

[0067] Step 5: Send the iridium plate in step 4 into the rolling mill, the reduction in a single pass is 30~40%, and the finished product is rolled in one pass. The roll of the rolling mill can have a flat surface or a concave-convex surface; ...

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Abstract

The embodiment of the invention provides an iridium plate with purity greater than and equal to 99%. The iridium plate is characterized in that the surface of the iridium plate is uneven. An iridium crucible processed by the iridium plate has a uniform structure with an average grain size being 4 mm after being used for a long time at a high temperature, so that the high-temperature service life of the iridium crucible can be remarkably prolonged.

Description

technical field [0001] Embodiments of the present invention relate to the field of metal materials, and more specifically, relate to iridium metal plates, their preparation methods, and iridium crucibles. Background technique [0002] Metal iridium has the characteristics of high density, high melting point, and corrosion resistance, and is widely used in the field of high-temperature crystal growth. [0003] Rolling is a process that is simple to operate and easy to control. The iridium ingots are rolled to form iridium plates. The iridium plate is used for subsequent processing of iridium products. For example, the iridium plate can be cut and welded to form an iridium crucible, or can be formed into a weldless iridium crucible by stamping / spinning. [0004] The iridium plate is usually used as a container for high temperature crystal growth after being processed into an iridium crucible. Due to the high temperature of the crucible, the activity of the grain boundary in...

Claims

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Application Information

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IPC IPC(8): B21B1/02C30B35/00
CPCB21B1/026C30B35/002
Inventor 孙岩杨德江
Owner 陕西三毅有岩材料科技有限公司
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