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Method for producing combined spinning jet using laser welding method

A technology of laser welding and spinneret, which is applied in laser welding equipment, spinneret assemblies, manufacturing tools, etc., can solve problems such as non-spinneret, inability to install, and difficult to apply spinneret manufacturing, etc., and achieve material cost Reduced effect

Inactive Publication Date: 2009-02-11
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] After searching the existing technical documents, it is found that the Chinese patent No. 03129624.6 uses LIGA technology to manufacture special-shaped holes and micro-pores; the Chinese patent No. 200710038606.4 uses UV-LIGA technology to manufacture ultra-fine nozzles. The improvement of the above patents, Although it can solve the manufacturing problems of microscopic holes and complex holes and the mass production of spinneret holes, it is still difficult to apply to the manufacture of spinnerets, because LIGA technology and UV (ultraviolet)-LIGA technology can only realize the processing of flat plates. This kind of perforated plate cannot be installed on textile machinery equipment, so it is not a real spinneret
[0005] In addition, in order to meet the requirements of working under high temperature and strong acid-base solution, the spinneret mostly uses expensive materials such as tantalum and yellow platinum. The bottom plate of the spinneret is made of these expensive materials, and other parts can be replaced by other lower-cost materials. However, if traditional processing methods are used, how to synthesize a spinneret with two metal materials becomes a problem

Method used

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  • Method for producing combined spinning jet using laser welding method
  • Method for producing combined spinning jet using laser welding method
  • Method for producing combined spinning jet using laser welding method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] This embodiment includes the following steps:

[0028] First, the porous plate made of nickel is made by UV-LIGA technology. The shape of the porous plate is as follows: figure 1 As shown, and the outer frame of tantalum material matching the porous plate is made by stamping method, the shape of the outer frame is as follows figure 2 shown;

[0029] Described adopting UV-LIGA technology to make material is the porous plate of nickel, specifically as follows:

[0030] (1) Mask production: According to spinning needs, design and manufacture masks with corresponding cross-sectional shapes;

[0031] (2) Substrate treatment: Clean and dry a 2mm thick glass sheet, sputter Ti on one side and oxidize it to convert the Ti layer into TiO 2 Layer, as the subsequent electroforming seed layer;

[0032] (3) Glue rejection: Pour SU-8 100 onto the surface of the treated substrate, spin the glue 300 μm at a speed of 800 rpm on the glue rejection table, and pre-bake it in a program-...

Embodiment 2

[0039] This embodiment includes the following steps:

[0040] Firstly, use the stamping method to make a porous plate made of yellow and platinum. The thickness of the porous plate is 0.5mm, and the ratio of yellow and platinum is 3:1, and the matching tantalum material frame is made by stamping method;

[0041] Secondly, the outer edge of the perforated plate and the lower edge of the outer frame are tightly pressed together, and YAG laser equipment with a wavelength of 1.06 μm is used to fuse the edge of the porous plate and the lower edge of the outer frame. The welding parameters: power is 50W, pulse width is 6ms, frequency 20HZ / s, argon protection, speed 0.5mm / s, upper defocus 2.0mm;

[0042] Finally, the welded spinneret is stamped, and then the surface is cleaned and polished to complete the spinneret.

Embodiment 3

[0044] This embodiment includes the following steps:

[0045] Firstly, adopt the wire cutting method to make the stainless steel perforated plate, the thickness of the perforated plate is 2mm, and make the matching stainless steel outer frame by stamping method;

[0046] Secondly, the outer edge of the perforated plate and the lower edge of the outer frame are tightly pressed together, and YAG laser equipment with a wavelength of 1.06 μm is used to fuse the edge of the porous plate and the lower edge of the outer frame. The welding parameters: power is 80W, pulse width is 2ms, frequency 50HZ / s, helium protection, speed 0.3mm / s, upper defocus 1.8mm;

[0047] Finally, the welded spinneret is punched, and then the surface is cleaned and polished, and the spinneret is completed.

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Abstract

The invention relates to a method for producing a combined spinning head through laser welding, which belongs to the technical field of chemical fiber production. The method comprises the following steps: firstly, a perforated plate and an outer frame with consistent size and shape with the perforated plate are produced; secondly, the outer edge of the perforated plate is tightly pressed with the lower edge of the outer frame, the edge of the perforated plate and the lower edge of the outer frame are melted through the laser welding method, so that the edge of the perforated plate and the lower edge of the outer frame are integrated into a whole; finally, the welded spinning head is stamped, and after the subsequent treatment such as cleaning, strengthening, surface finishing and the like, the production of the spinning head is completed. The spinning head is produced in two parts which can adopt different materials and different processing methods, therefore, the production difficulty and cost of the spinning head are greatly reduced.

Description

technical field [0001] The invention relates to a processing method of a spinneret in the technical field of micromachining, in particular to a method for manufacturing a combined spinneret by a laser welding method. Background technique [0002] The spinneret is a key precision part in the chemical fiber industry. Its function is to extrude the precisely metered spinning solution through the micropores on it to extrude fiber bundles with a certain thickness and fine texture. Therefore, its quality is to ensure the quality of the finished fiber and an important condition for a good spinning process. The spinneret has cap type, tile type, etc., and the size is different, and the mass of each is several grams to tens of grams. Studies have shown that special-shaped fiber cross-section can improve the gloss, bulkiness, elasticity, handle, etc. of the fabric; under the same fiber cross-section, the special-shaped cross-section fiber has greater bending strength than the circula...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00B23K26/20D01D4/02B23K26/21
Inventor 姚锦元丁桂甫程吉凤汪红
Owner SHANGHAI JIAO TONG UNIV