Surface treatment method of tantalum spinneret

A surface treatment and spinneret technology, applied in the field of surface treatment of tantalum spinnerets, can solve problems such as affecting the spinnability of spinnerets and plugging holes.

Active Publication Date: 2020-05-29
BEIJING HUAYU CHUANGXIN TA NB SCI&TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If powdery additives are added when spinning the above-mentioned special fibers, or if the spinning process is unstable and particles appear in the stock solution, it is hoped that the roughness of the micropore wall of the spinneret will be lower, otherwise it will be more likely to cause hole plugging, Thereby affecting the spinnability of the spinneret

Method used

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  • Surface treatment method of tantalum spinneret
  • Surface treatment method of tantalum spinneret
  • Surface treatment method of tantalum spinneret

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] refer to figure 2 , to illustrate the surface treatment method for wet spinning of the present invention. The steps of embodiment 1 are as follows:

[0081] Step 1. Process and manufacture the metal tantalum plate into 45 tantalum spinnerets with the prior art. Each tantalum spinneret as figure 1 shown. The tantalum spinneret includes a body 2, the outer diameter of the spinneret outlet surface 1 is 16mm, the number of micropores 12 is 2600, and the inner diameter of the micropores is 0.052±0.001mm.

[0082] Step 2. At room temperature 25°C, use 0.01% H 3 po 4 , add 150 volts of anode voltage and constant voltage for 1 hour and then clean it to form a layer of amorphous Ta on the surface of the tantalum spinneret. 2 o 5 Membrane 3, as in Figure 4 .

[0083] Step 3, using step (c), polishing and removing the amorphous Ta on the silk surface 1 2 o 5 film3.

[0084] Step 4, coating: add 10 volts of anode voltage to the molten lithium nitrate solution at 488°...

Embodiment 2

[0092] refer to figure 2 , to illustrate the surface treatment method of the spinneret used for wet spinning according to the present invention. The steps of embodiment 2 are as follows:

[0093] Step 1, process and manufacture metal tantalum plate into 27 tantalum spinnerets with prior art, wherein each such as figure 1 shown. The tantalum spinneret includes a body 2, the outer diameter of the spinneret outlet surface 1 is 16mm, the number of micropores is 1400, and the inner diameter of the micropores is 0.083±0.001mm.

[0094] Step 2. At room temperature 25°C, use 0.01% H 3 po 4 , add 150 volts anode voltage constant voltage for 1 hour and then clean. A layer of amorphous Ta is formed on the surface of the tantalum spinneret 2 o 5 film3.

[0095] Step 3, using step (c), polishing to remove the Ta on the silk outlet surface 1 2 o 5 film3.

[0096] Step 4, coating: add 10 volts of anode voltage to the molten lithium nitrate solution at 488°C, and react at constan...

Embodiment 3

[0101] refer to figure 2 , the present invention is used for wet spinning surface treatment method, and the step of embodiment 3 is as follows:

[0102] Step 1, process and manufacture metal tantalum plate into 1 tantalum spinneret with prior art, such as figure 1 As shown, the tantalum spinneret includes a body 2, the outer diameter of the spinneret outlet surface 1 is 22mm, the number of micropores is 330 holes, and the inner diameter of the micropores is 0.082±0.001mm.

[0103] Step 2. Nitriding the tantalum spinneret prepared in step (a) according to the method of step (b) of the inventor's patent 02106915.8 to obtain a spinneret with a hardness of HV385.

[0104] Step 3, adopt ethylene glycol: 0.01% H 3 po 4=2:1 solution, the solution temperature is 90°C and the anode voltage is constant at 60 volts for 1.5 hours and then cleaned. A layer of amorphous Ta is formed on all surfaces of the spinneret 2 o 5 film3.

[0105] Step 4, using step (c) to polish and remove T...

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Abstract

A surface treatment method for a tantalum spinneret for wet spinning, characterized in that: comprising the following steps: (a) processing a metal tantalum plate into a tantalum spinneret; (a) 1 The tantalum spinneret prepared in step (a) is subjected to nitriding treatment or non-nitriding treatment according to the method of step (b) of the inventor's patent ZL02106915.8, and directly enters the next step (b) of the present invention. (b) The method of making tantalum anode with prior art tantalum electrolytic capacitor generates a layer of suitable amorphous Ta on the tantalum spinneret 2 o 5 (c) polishing: the surface of the tantalum spinneret processed in step (b) is polished to remove the insulating amorphous Ta 2 o 5 Film (d) coating, a layer of amorphous Ta 2 o 5 The tantalum spinneret of the film is coated with a molten salt electrochemical method to form a film layer containing a lithium-containing compound; (e) polishing: the tantalum spinneret processed in step (d) The surface is polished to remove the insulating lithium-containing compound film on the surface of the wire outlet.

Description

technical field [0001] The invention relates to a surface treatment method of a tantalum spinneret. More specifically, the present invention relates to a surface treatment method of a spinneret for wet or dry-wet spinning, especially a surface treatment method of a tantalum spinneret. Background technique [0002] Chemical fiber production has developed vigorously at the end of the 20th century. With the vigorous development of my country's economy, my country has become the world's largest producer of chemical fiber. The chemical fiber industry has become an important part of the national economy, and the spinneret (plate) is the most precise and critical component in chemical fiber production. The quality of the spinneret (plate) directly affects the product quality, labor productivity and cost of chemical fiber production. People have been continuously improving the spinneret to meet the development needs of chemical fiber production. [0003] The production process of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C28/04C25D11/26C25D9/04
CPCC23C28/042C25D9/04C25D11/26C23C28/04D01D4/022
Inventor 刘寓中
Owner BEIJING HUAYU CHUANGXIN TA NB SCI&TECH CO LTD
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