Method of manufacturing abnormity spinneret

Abstract

This invention relates to a manufacturing method for an abnormal spinneret including: 1, spraying metal Ti thin layer and making oxidation process on a glass plate, then throwing off negative etching glue and pre-drying it to form a pattern of the abnormal nozzle etching glue structure, 2, sputtering a Ti-Cu conduction layer, 3, applying an electric deposition technology to carry out deposition of the stress buffer layer, a non-crystal state silking face layer and a die supporting layer to form a complete electric die cast, 4, heat-processing it and cooling it to room temperature, 5, carryingout flatness process to remove the negative glue and Cu stress buffer layer.

Description

Manufacturing method of special-shaped spinneret technical field The invention relates to a manufacturing method in the technical field of electrochemical micromachining, in particular to a manufacturing method of a special-shaped spinneret. Background technique Every year, tens of millions of tons of synthetic fibers in the world need to be processed through special-shaped spinnerets. Spinnerets are not only one of the important components of the synthetic fiber industry, but also a key technology for the development of new fiber products. The spinneret is essentially a micro-nozzle array distributed on the template according to certain rules. From a technical point of view, the most critical technology to realize the ultra-fine and special-shaped fiber products is to solve the matching micro-nozzle manufacturing technology. : 1) Solve the special-shaped and precision control of the nozzle structure; 2) Select the appropriate spinneret material and processing technology t...

AI Technical Summary

Problems solved by technology

The nozzle structure of the traditional spinneret is mainly processed by precision mechanical drilling, micro electric spark and wire cutting technology, but the nozzle structure obtained by these technologies has a single structure shape and low dimensional accuracy, so it cannot satisfy the ultra-fine special-shaped market Pursuit; laser processing has been tried as an option for the manufacture of new spinnerets, however, its line width control capability is also on the order of 100um, and the production efficiency is relatively low

Before the 1980s, expensive precious metals such as gold and platinum and their alloys were used as the spinneret material. This kind of spinneret has good spinnability and excellent corrosion resistance, but it has high cost, low hardness, and scratch resistance. Poor capacity and short service life

After searching the literature of the prior art, it was found that the invention of Chinese Patent Publication No. (CN1279224C), titled "Surface Treatment Method for Tantalum Spinnerets Used in Wet Spinning", proposes a surface treatment method for tantalum spinnerets. The method comprises: 1) processing a metal tantalum plate into a tantalum spinneret; 2) carrying out nitriding treatment on the tantalum spinneret, so that a nitriding layer is formed on the surface of the tantalum spinneret, and the surface hardness reaches Hv400-Hv1100; 3. ) Further use molten salt electrochemistry to carry out coating treatment, so that the surface of the tantalum spinneret forms a film containing lithium tantalate; 4) the surface of the tantalum spinneret is polished to remove the lithium tantalate film The transition layer of tantalum is left, and although the scratch resistance and service life of the resulting tantalum spinneret are significantly improved, and the spinneret has excellent spinnability, it can be used to replace the precious metal spinneret, but due to the tantalum spinneret It is made of tantalum plate, which can only be processed into simple shapes such as circles, and it is difficult to achieve ultra-fine special-shaped nozzles. Secondly, for micron-sized special-shaped nozzles, if the wire outlet surface is polished, the lithium tantalate will be evenly ground away. film layer, leaving a transition layer of tantalum, which is technically difficult

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