阅读说明：本技术 一种铁基微细单丝的打尖液及其使用方法 (Iron-based micro monofilament sharpening liquid and using method thereof ) 是由 姚利丽 王威 刘湘慧 石荣珠 朱晨露 魏于博 于 2020-12-28 设计创作，主要内容包括：本发明公开了一种铁基微细单丝打尖液极其使用方法,所述打尖液中包括以下质量分数的组分：硝酸5％～36％；OP乳化剂0.5％～5％；双氧水0.5％～5％；水补齐。其使用方法是将所述打尖液置于透明储液装置中,储液装置底部放置海绵,顶部使用橡胶薄膜封口,将待打尖单丝穿过橡胶薄膜插入液位下,然后在打尖液液面上下插拔若干次。通过化学腐蚀的方法使微细单丝在溶液中变细变尖,解决了铁基微细单丝在打尖过程中成功率不高的问题,减轻了员工劳动强度,提高了生产效率,并且使用该打尖液不需要使用电源,配制简单,便于携带,降低生产成本。(The invention discloses an iron-based micro monofilament sharpening liquid and a using method thereof, wherein the sharpening liquid comprises the following components in percentage by mass: 5 to 36 percent of nitric acid; OP emulsifier 0.5-5%; 0.5 to 5 percent of hydrogen peroxide; and (5) supplementing water. The use method of the liquid sharpening device comprises the steps of placing the sharpening liquid in a transparent liquid storage device, placing a sponge at the bottom of the liquid storage device, sealing the top of the liquid storage device by using a rubber film, inserting the monofilament to be sharpened into the liquid level through the rubber film, and then inserting and pulling the monofilament to be sharpened into and out of the liquid level of the sharpening liquid for a plurality of times. The method makes the fine monofilament become fine and sharp in the solution by a chemical corrosion method, solves the problem of low power of the iron-based fine monofilament in the pointing process, lightens the labor intensity of workers, improves the production efficiency, does not need a power supply when using the pointing liquid, has simple preparation, is convenient to carry, and reduces the production cost.)

1. The iron-based fine monofilament sharpening liquid is characterized by comprising the following components in percentage by mass:

2. the iron-based fine monofilament pinching liquid according to claim 1, wherein the mass fraction of nitric acid in the pinching liquid is 10% to 30%.

3. The iron-based fine monofilament topping liquid according to claim 1, wherein said OP emulsifier is OP-9, OP-10 or OP-13.

4. The use method of the iron-based fine monofilament pointing liquid according to any one of claims 1 to 3, characterized in that the pointing liquid is placed in a transparent liquid storage device, a sponge is placed at the bottom of the liquid storage device, the top of the liquid storage device is sealed by a rubber film, the monofilament to be pointed is inserted into the liquid level through the rubber film, and then the monofilament is inserted and pulled up and down on the liquid level of the pointing liquid for several times.

5. The use method of the iron-based fine monofilament pinching liquid according to claim 4, wherein the liquid level of the pinching liquid is 1 to 5cm higher than that of the sponge.

6. The use method of the iron-based fine monofilament pointing liquid according to claim 4, characterized in that the monofilament to be pointed passes through the rubber film through a hollow pipe.

7. The use method of the iron-based fine monofilament pointing liquid according to claim 6, wherein the hollow tube is large in top and small in bottom.

8. The using method of the iron-based micro monofilament sharpening liquid as claimed in claim 4, wherein the inserting liquid level is 1-5 cm below the inserting liquid level during the inserting and pulling process of the monofilament to be sharpened.

9. The using method of the iron-based fine monofilament sharpening liquid as claimed in claim 4, wherein the distance from the liquid surface is 1-3 cm when the monofilament to be sharpened is pulled up and pulled down in the process of plugging and pulling the monofilament to be sharpened.

10. The use method of the iron-based fine monofilament sharpening liquid according to claim 4, wherein the monofilament to be sharpened is inserted and pulled up and down 2-6 times at a frequency of 3-5 seconds/time.

Technical Field

The invention belongs to the technical field of metal wire processing, and particularly relates to a pointing liquid for an iron-based micro monofilament and a using method thereof.

Background

In recent years, with the rapid development of photovoltaic power generation and other special equipment manufacturing industries, people have increasingly increased demand for diamond wires for cutting silicon wafers and precise conducting wires, iron-based metal microwires are greatly promoted to develop, and gold steel wires are increasingly thinner to reduce the loss of the silicon wafers. Generally, filaments having a diameter of 100 μm to 1000 μm are called fine filaments, and filaments having a diameter of 10 μm to 100 μm are called fine filaments. The metal microfilament is produced by a die drawing method, and the sharpening is an essential step in the preparation process. The traditional sharpening method is to wind a thicker metal wire on a sharpening rod and sharpen the metal wire in a back-and-forth rubbing mode, but when the diameter of the metal wire is less than 100 mu m, the success rate of the method is low, the sharpened metal wire is not straight, and the success rate of die penetration is low. The electrolytic corrosion using hydrochloric acid as a main solution is mentioned in the existing document 'superfine Ni80Cr20 alloy wire cold drawing head burning and die punching process', but the equipment is complex and high in cost, and the carrying and the use are not convenient due to the need of using a direct current power supply, so that the overflow of certain volatile gas is difficult to avoid.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

Disclosure of Invention

The invention aims to overcome the defects, and provides the iron-based micro monofilament sharpening liquid and the using method thereof.

In order to realize the purpose, the invention is realized by the following technical scheme:

an iron-based fine monofilament sharpening liquid comprises the following components in percentage by mass:

the mass fraction of the nitric acid in the sharpening liquid is preferably 10-30%.

The OP emulsifier is preferably OP-9, OP-10 or OP-13.

The using method of the iron-based micro monofilament sharpening liquid comprises the steps of placing the sharpening liquid in a transparent liquid storage device, placing a sponge at the bottom of the liquid storage device, sealing the top of the liquid storage device by using a rubber film, inserting the monofilament to be sharpened into the liquid level through the rubber film, and then inserting and pulling the monofilament into and out of the liquid level of the sharpening liquid for a plurality of times.

The liquid level of the sharpening liquid is 1-5 cm higher than that of the sponge, so that the tip part of the monofilament can be completely immersed into the sharpening liquid in the plugging and unplugging process.

The monofilament to be sharpened penetrates through the rubber film through the hollow pipe, the hollow pipe is preferably arranged to be large in upper part and small in lower part, the monofilament can be conveniently and smoothly plugged, and the operation is simple, convenient and easy.

In the plugging and pulling process, the monofilament to be sharpened is inserted 1-5 cm below the liquid level, the length of the sharpened part can be ensured to penetrate through a die hole and be clamped by sharp-nosed pliers used for penetrating a die, the monofilament is separated from the liquid level by 1-3 cm when the monofilament is pulled upwards, and the monofilament is plugged and pulled upwards and downwards for 2-6 times at the frequency of 3-5 seconds/time.

The main chemical reactions existing in the corrosion process of the sharpening liquid are as follows:

4HNO₃+Fe＝Fe(NO₃)₃+NO↑+2H₂O

2NO+3H₂O₂＝2HNO₃+2H₂O

the existence of the OP emulsifier can slow down the reaction speed, so that the corrosion of the microfilament is controllable, and meanwhile, the overflow of harmful gas is inhibited; the existence of hydrogen peroxide can consume part of the generated NO gas and simultaneously produce new HNO₃The overflow of toxic gas is reduced and the consumption of nitric acid is reduced through a chemical reaction mode.

Compared with the prior art, the invention has the beneficial effects that:

(1) compared with the common strong acid corrosion liquid, the sharpening liquid has the characteristics of easily controlled corrosion speed, less harmful gas generation and basically no harmful gas overflow. The specific proportion can effectively control the corrosion speed, the iron matrix is not passivated, the corrosion is difficult to carry out, the sharpening liquid is not required to be frequently replaced due to the slow corrosion speed, the concentration of the sharpening liquid is not required to be viscous, the corrosion sharpening time is prolonged, and the overflow of acid mist or harmful gas is also sufficiently inhibited.

(2) According to the using method of the pointing liquid, the original straightness of the micro-wires after pointing is basically maintained through the specific container and the operation method, the problems of poor pointing straightness and low pointing success rate of the micro-wires are effectively reduced, the operation is simple, the labor intensity is reduced, the pointing efficiency is high, and meanwhile, spraying of corrosive liquid and overflow of harmful gas are avoided.

(3) According to the sharpening liquid and the use method thereof, the fine monofilaments are thinned and sharpened in the solution by a chemical corrosion method, the problem that the power of the iron-based fine monofilaments is not high in the sharpening process is solved, the labor intensity of workers is reduced, the production efficiency is improved, a power supply is not needed, the sharpening liquid is easy to prepare, operate, maintain and carry, and can be repeatedly used for a long time, so that the production cost and the operation cost are reduced.

Drawings

FIG. 1 is a state diagram of the use process of the sharpening liquid according to the embodiment of the present invention.

Fig. 2 is a schematic view of a beaker filled with clean water according to an embodiment of the invention.

Fig. 3 is a schematic view of a pointed finished product according to an embodiment of the present invention.

In the figure: 11. a liquid storage tank; 12. a sponge; 13. a sharpening liquid; 14 a rubber film; 15. fine monofilaments; 16. binding a belt; 17. a hollow tube; 21. a beaker; 22. clear water; 31. the product is finished after sharpening; 31-1, a gradient reducing area; 31-2, and penetrating a die and then clamping a zone.

Detailed Description

Preferred embodiments of the present invention will be described in more detail with reference to specific examples.

In the description of the present invention, it is to be understood that the terms "upper", "lower", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention, but do not indicate or imply necessary positions of the indicated elements, and thus, the present invention is not to be construed as being limited.

Example 1

The embodiment provides an iron-based fine monofilament sharpening liquid which comprises, by mass, 20% of nitric acid, 2% of OP-9 emulsifier and 2% of hydrogen peroxide.

In this example, iron-based fine monofilaments having a filament diameter of 64 μm were sharpened and passed through a die having a hole diameter of 60 μm. The specific operation method comprises the following steps:

as shown in figure 1, the above-mentioned sharpening liquid 13 is placed in a transparent liquid storage tank 11, the sponge 12 is placed at the bottom of the liquid storage tank 11, the liquid level is 3cm higher than that of the sponge 12, in order to prevent the sharpening liquid 13 from spilling, the rubber film 14 is used for sealing and is tightly sealed by a ribbon 16, the rubber film 14 is penetrated through by a hollow tube 17, the sharpened micro-fine monofilament 15 penetrates through the rubber film 14 through the hollow tube 17 and is inserted into the liquid level below 3cm, then the sharpened micro-fine monofilament 15 is taken out after being vertically inserted and pulled out for 2 times at the frequency of 3 seconds/time, the corroded micro-fine monofilament 15 is soaked in a beaker 21 (shown in figure 2) filled with clear water 22, and the sharpening liquid remained on the steel wire is washed off and is penetrated through a die. As shown in figure 3, the pointed finished product 31 has the end part of a conical shape which comprises a gradient reducing area 31-1 and a die-penetrating rear clamping area 31-2, and the die-penetrating rear clamping area 31-2 is mainly convenient for clamping of the nipper pliers, because the lower end of the micro monofilament is earlier contacted with the corrosive liquid than the upper end of the micro monofilament and is later separated from the corrosive liquid than the upper end of the micro monofilament.

Example 2

The embodiment provides an iron-based fine monofilament sharpening liquid which comprises, by mass, 25% of nitric acid, 2% of OP-10 emulsifier and 3% of hydrogen peroxide.

In this example, iron-based fine monofilaments having a filament diameter of 64 μm were sharpened and passed through a die having a hole diameter of 60 μm. The specific operation method comprises the following steps:

the sharpening liquid 13 is placed in a transparent liquid storage tank 11, the sponge 12 is placed at the bottom of the liquid storage tank 11, the liquid level is 3cm higher than that of the sponge 12, in order to prevent the sharpening liquid 13 from spilling, the rubber film 14 is used for sealing and tightly sealed by a ribbon 16, the hollow tube 17 is used for penetrating the rubber film 14, the sharpened micro-fine monofilament 15 penetrates through the rubber film 14 through the hollow tube 17 and is inserted into the liquid level below 3cm, then the sharpened micro-fine monofilament 15 is taken out after being vertically inserted and pulled out for 2 times at the frequency of 3 seconds/time, the corroded micro-fine monofilament 15 is soaked in a beaker 21 filled with clean water 22, and the sharpening liquid remained on the steel wire is washed off and is subjected to die punching.

Example 3

The embodiment provides an iron-based fine monofilament sharpening liquid which comprises, by mass, 25% of nitric acid, 2% of OP-10 emulsifier and 3% of hydrogen peroxide.

In this example, iron-based fine monofilaments having a filament diameter of 64 μm were sharpened and passed through a die having a hole diameter of 60 μm. The specific operation method comprises the following steps:

placing the sharpening liquid 13 into a transparent liquid storage tank 11, placing a sponge 12 at the bottom of the liquid storage tank 11, wherein the liquid level is 3cm higher than that of the sponge 12, sealing the liquid storage tank by using a rubber film 14 and tightly sealing the liquid storage tank by using a binding belt 16, penetrating the rubber film 14 by using a hollow pipe 17, penetrating a sharpened micro monofilament 15 through the hollow pipe 17 and the rubber film 14, inserting the sharpened micro monofilament 15 into the liquid level for 3cm, then inserting and pulling the sharpened micro monofilament 15 up and down for 5 times at the frequency of 5 seconds/time, taking out the sharpened micro monofilament 15, soaking the corroded micro monofilament 15 into a beaker 21 filled with clear water 22, washing away the residual sharpening liquid on the steel wire, and carrying out die-punching.

Example 4

The embodiment provides an iron-based fine monofilament sharpening liquid which comprises, by mass, 25% of nitric acid, 2% of OP-10 emulsifier and 3% of hydrogen peroxide.

In this example, an iron-based fine monofilament having a filament diameter of 53 μm was sharpened and passed through a die having a hole diameter of 50 μm. The specific operation method comprises the following steps:

placing the sharpening liquid 13 into a transparent liquid storage tank 11, placing a sponge 12 at the bottom of the liquid storage tank 11, wherein the liquid level is 3cm higher than that of the sponge 12, sealing the liquid storage tank by using a rubber film 14 and tightly sealing the liquid storage tank by using a binding belt 16, penetrating the rubber film 14 by using a hollow pipe 17, penetrating a sharpened micro monofilament 15 through the hollow pipe 17 and the rubber film 14, inserting the sharpened micro monofilament 15 into the liquid level for 3cm, then inserting and pulling the sharpened micro monofilament 15 up and down for 5 times at the frequency of 5 seconds/time, taking out the sharpened micro monofilament 15, soaking the corroded micro monofilament 15 into a beaker 21 filled with clear water 22, washing away the residual sharpening liquid on the steel wire, and carrying out die-punching.

Comparative example 1

Iron-based fine monofilaments having a wire diameter of 64 μm were sharpened using a conventional sharpening rod and then passed through a die having a hole diameter of 60 μm.

Comparative example 2

Iron-based fine monofilaments having a filament diameter of 53 μm were sharpened using a conventional sharpening rod and then passed through a die having a pore diameter of 50 μm.

Comparative example 3

Iron-based fine monofilaments with the filament diameter of 64 mu m are sharpened by using dilute nitric acid with the mass fraction of 20 percent, and the iron-based fine monofilaments penetrate through a die with the aperture of 60 mu m. During the pointing process, a large amount of small bubbles are generated on the contact surface of the micro monofilament and nitric acid and overflow, and the end of the micro monofilament is clamped by a sharp mouth clamp after penetrating through the aperture of a die, so that the filament breakage is easy to occur due to the fact that the corrosion speed is too fast and is not easy to control.

The time for punching the mold of the products obtained in the above examples and comparative examples is shown in Table 1.

TABLE 1 comparison of the time for piercing the mould for the products obtained in the examples of the invention and in the comparative examples

Die-through product	Time required for punching die (min)
		Example 1	2.5min
Example 2	2min
		Example 3	1.5min
Example 4	1min
		Comparative example 1	7min
Comparative example 2	15min
		Comparative example 3	5min

As can be seen from the comparison, when the sharpening liquid and the using method thereof are used for sharpening, the sharpening efficiency is high, the quality of finished products is good, and the die penetrating time is far longer than that of the traditional sharpening. And the sharpening liquid is easy to prepare, operate, maintain and carry, and is very convenient to use. Meanwhile, the comparison shows that the speed of the microfilament with thinner filament diameter is faster.

Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and technical principles of the described embodiments, and such modifications and variations should also be considered as within the scope of the present invention.