阅读说明：本技术 一种电热合金丝的酸洗液及酸洗方法 (Pickling solution and pickling method for electric heating alloy wire ) 是由 叶明华 于 2020-11-10 设计创作，主要内容包括：本发明公开了一种电热合金丝的酸洗液及其酸洗方法,酸洗液包括A组分和B组分；所述A组分包括如下的成分和配比：非离子型表面活性剂5～10g/L、小苏打20～25g/L,苏打10～15g/L,其余为水；B组分包括如下质量百分含量的组分：盐酸130～150g/L,硫酸10～20g/L,硝酸10～15g/L,其余为水；酸洗方法包括：除脂工艺；一次水洗；除氧化皮工艺；二次水洗并干燥。本发明通过两种组分的酸洗液的设计,并通过除脂和除氧化皮先后两部酸洗工艺,可完全除去拉丝后的电热合金丝表面残存的油脂和氧化皮层,所处理后的电热合金丝表面光滑,无点状腐蚀现象,实现了低损耗酸洗,保护了电热合金丝的质量和使用性能。(The invention discloses a pickling solution for an electrothermal alloy wire and a pickling method thereof, wherein the pickling solution comprises a component A and a component B; the component A comprises the following components in parts by weight: 5-10 g/L of nonionic surfactant, 20-25 g/L of baking soda, 10-15 g/L of soda and the balance of water; the component B comprises the following components in percentage by mass: 130-150 g/L of hydrochloric acid, 10-20 g/L of sulfuric acid, 10-15 g/L of nitric acid and the balance of water; the acid washing method comprises the following steps: degreasing; washing with water for the first time; a descaling process; and washing with water twice and drying. According to the invention, through the design of the pickling solution with two components and the two successive pickling processes of degreasing and descaling, grease and a scale layer remained on the surface of the electrothermal alloy wire after wire drawing can be completely removed, the surface of the treated electrothermal alloy wire is smooth, the phenomenon of punctiform corrosion is avoided, the low-loss pickling is realized, and the quality and the service performance of the electrothermal alloy wire are protected.)

1. The pickling solution for the electric heating alloy wire is characterized by comprising the following components: a component A and a component B; wherein the component A comprises the following components in parts by weight:

5-10 g/L of nonionic surfactant, 20-25 g/L of baking soda, 10-15 g/L of soda and the balance of water;

the component B comprises the following components in percentage by mass: 130-150 g/L of hydrochloric acid, 10-20 g/L of sulfuric acid, 10-15 g/L of nitric acid and the balance of water.

2. An acid washing method for an electrothermal alloy wire, characterized in that the acid washing solution of claim 1 is adopted, and the method comprises the following steps:

(1) the degreasing process comprises the following steps: immersing the electrothermal alloy wire in the pickling solution containing the component A;

(2) primary water washing: passing the electric heating alloy wire subjected to grease removal in the step (1) through a cleaning pool;

(3) and (3) descaling process: immersing the electrothermal alloy wire after passing through the cleaning tank into a pickling solution containing the component B;

(4) and (3) secondary water washing and drying: and washing the electric heating alloy wires after descaling with high-pressure water, and then drying.

3. The acid washing method of the electrothermal alloy wire according to claim 2, wherein in the step (1), the degreasing process conditions are as follows: the soaking temperature is 35-45 ℃, and the soaking and cleaning time is 20-30 min.

4. The acid washing method for the electrothermal alloy wire according to claim 2, wherein in the step (2), the process conditions of the primary water washing are as follows: and the water washing temperature is 50-80 ℃, and the electrothermal alloy wires pass through the washing tank at a constant speed of 5-10 m/s.

5. The acid washing method for the electrothermal alloy wire according to claim 2, wherein in the step (3), the process conditions for removing the scale are as follows: the soaking temperature is 35-45 ℃, and the soaking time is 15-30 min.

6. The acid washing method for the electrothermal alloy wire according to claim 2, wherein in the step (4), the process conditions of the high-pressure water washing are as follows: the high-pressure water pressure is 6-8 MPa, and the flow rate is 5-15L/min.

Technical Field

The invention relates to the technical field of metal material surface treatment, in particular to a pickling solution and a pickling method for an electrothermal alloy wire.

Background

The electrothermal alloy is an alloy material for manufacturing an electrothermal element, is an aluminum alloy material and comprises iron-chromium-aluminum alloy and nickel-chromium-aluminum alloy. The heating wire is easy to oxidize in the production process, and the surface of the heating wire is covered with an oxide layer; during the rough wire drawing process, a lubricant is needed to be used, so that oxide skin on the surface of the resistance wire always floats on the surface of the wire along with the gradual reduction of a wire drawing die in the wire drawing process, and an oxide skin layer and partial grease are attached to the surface of a finished product of the electrothermal alloy wire, so that the use performance of the electrothermal alloy wire is influenced.

In the prior art, firstly polishing is usually adopted, and then a pickling solution containing hydrofluoric acid, silicate and the like is used for soaking to remove grease and oxide skin, and the method has the following defects: on one hand, the polishing can affect the accuracy of the electric heating alloy wire, on the other hand, the pickling solution can corrode the surface of the electric heating alloy wire, so that the electric heating alloy wire is lost, and the service life of the electric heating alloy wire is shortened; in addition, the generated acid washing wastewater has great treatment difficulty and pollutes the environment.

Disclosure of Invention

The invention mainly solves the technical problem of providing the pickling solution and the pickling method for the electrothermal alloy wire, and can solve the problems existing in the existing electrothermal alloy wire pickling.

In order to solve the technical problems, the invention adopts a technical scheme that: provides a pickling solution for an electrothermal alloy wire, which comprises: a component A and a component B; wherein the component A comprises the following components in parts by weight:

5-10 g/L of nonionic surfactant, 20-25 g/L of baking soda, 10-15 g/L of soda and the balance of water;

the component B comprises the following components in percentage by mass: 130-150 g/L of hydrochloric acid, 10-20 g/L of sulfuric acid, 10-15 g/L of nitric acid and the balance of water.

In order to solve the technical problem, the invention adopts another technical scheme that: the pickling method of the electrothermal alloy wire comprises the following steps of:

(1) the degreasing process comprises the following steps: immersing the electrothermal alloy wire in the pickling solution containing the component A;

(2) primary water washing: passing the electric heating alloy wire subjected to grease removal in the step (1) through a cleaning pool;

(3) and (3) descaling process: immersing the electrothermal alloy wire after passing through the cleaning tank into a pickling solution containing the component B;

(4) and (3) secondary water washing and drying: and washing the electric heating alloy wires after descaling with high-pressure water, and then drying.

In a preferred embodiment of the present invention, in the step (1), the grease removal process conditions are as follows: the soaking temperature is 35-45 ℃, and the soaking and cleaning time is 20-30 min.

In a preferred embodiment of the present invention, in the step (2), the process conditions of the primary water washing are as follows: and the water washing temperature is 50-80 ℃, and the electrothermal alloy wires pass through the washing tank at a constant speed of 5-10 m/s.

In a preferred embodiment of the present invention, in the step (3), the process conditions for removing the scale are as follows: the soaking temperature is 35-45 ℃, and the soaking time is 15-30 min.

In a preferred embodiment of the present invention, in the step (4), the process conditions of the high-pressure water washing are as follows: the high-pressure water pressure is 6-8 MPa, and the flow rate is 5-15L/min.

The invention has the beneficial effects that: the invention relates to a pickling solution and a pickling method for an electrothermal alloy wire, which can completely remove grease and a scale layer remained on the surface of the electrothermal alloy wire after wire drawing by the design of the pickling solution with two components and two pickling processes of degreasing and scale removing, improve the performance of the electrothermal alloy wire, ensure the treated electrothermal alloy wire to have smooth surface, good quality and no punctiform corrosion phenomenon, realize low-loss pickling and protect the quality and the service performance of the electrothermal alloy wire.

Detailed Description

The following detailed description of the preferred embodiments of the present invention is provided to enable those skilled in the art to more readily understand the advantages and features of the present invention, and to clearly and unequivocally define the scope of the present invention.

The embodiment of the invention comprises the following steps:

example 1

The invention discloses a pickling solution for an electrothermal alloy wire, which comprises the following components: a component A and a component B; wherein the component A comprises the following components in parts by weight:

5g/L of lauryl alcohol polyoxyethylene ether, 20g/L of baking soda, 15g/L of soda and the balance of water; the component A can effectively remove grease attached to the surface of the electrothermal alloy wire, and the grease is removed firstly, so that the oxide layer is separated, and the effective removal of the subsequent oxide layer is facilitated;

the component B comprises the following components in percentage by mass: 130g/L of hydrochloric acid, 20g/L of sulfuric acid, 15g/L of nitric acid and the balance of water; the component B can effectively remove an oxide layer on the surface of the electric heating alloy wire and does not corrode and damage the electric heating alloy wire; in the component B, hydrofluoric acid, silicate and other components are not used, and the component B can effectively remove an oxide layer through the proportioning design of hydrochloric acid, sulfuric acid and nitric acid, and does not corrode or lose the components of the electrothermal alloy wire;

the method for pickling the electrothermal alloy wire by using the pickling solution comprises the following steps:

(1) the degreasing process comprises the following steps: preparing a component A by using clear water, so that each liter of the component A contains 5g of lauryl alcohol polyoxyethylene ether, 20g of baking soda and 15g of soda, placing the prepared component A into a container, then immersing the drawn electrothermal alloy wire into the pickling solution of the component A, regulating the temperature of the pickling solution of the component A to 35-40 ℃, soaking for 30min, and then taking out the electrothermal alloy wire;

(2) primary water washing: enabling the electric heating alloy wire subjected to grease removal in the step (1) to pass through a cleaning pool at a constant speed of 5m/s and at 50-60 ℃ so as to remove the A component solution remaining on the surface of the electric heating metal wire; the proper high water temperature is beneficial to cleaning the electrothermal metal wire;

(3) and (3) descaling process: preparing a component B by using clear water, so that each liter of the component B contains 130g of hydrochloric acid, 20g of sulfuric acid and 15g of nitric acid, placing the prepared component B into a container, then soaking the electric heating alloy wire subjected to primary water washing into the pickling solution of the component B, regulating the temperature of the pickling solution of the component B to 35-40 ℃, soaking for 25min, and then taking out the electric heating alloy wire;

(4) and (3) secondary water washing and drying: and (3) washing the electric heating alloy wires after descaling by using high-pressure water with the pressure of 7MPa at the flow rate of 10L/min, and then drying.

The surface of the pickled electric heating alloy wire meets the quality requirement.

Example 2

The invention discloses a pickling solution for an electrothermal alloy wire, which comprises the following components: a component A and a component B; wherein the component A comprises the following components in parts by weight:

10g/L of lauryl alcohol polyoxyethylene ether, 25g/L of baking soda, 10g/L of soda and the balance of water; the component A can effectively remove grease attached to the surface of the electrothermal alloy wire, and the grease is removed firstly, so that the oxide layer is separated, and the effective removal of the subsequent oxide layer is facilitated;

the component B comprises the following components in percentage by mass: 150g/L of hydrochloric acid, 10g/L of sulfuric acid, 10g/L of nitric acid and the balance of water; the component B can effectively remove an oxide layer on the surface of the electric heating alloy wire and does not corrode and damage the electric heating alloy wire;

the method for pickling the electrothermal alloy wire by using the pickling solution comprises the following steps:

(1) the degreasing process comprises the following steps: preparing a component A by using clear water, so that each liter of the component A contains 10g of lauryl alcohol polyoxyethylene ether, 25g of baking soda and 10g of soda, placing the prepared component A into a container, then immersing the drawn electrothermal alloy wire into the pickling solution of the component A, regulating the temperature of the pickling solution of the component A to be 40-45 ℃, soaking for 20min, and then taking out the electrothermal alloy wire;

(2) primary water washing: enabling the electric heating alloy wire subjected to grease removal in the step (1) to pass through a cleaning pool at 80 ℃ at a constant speed of 10m/s so as to remove the residual A component solution on the surface of the electric heating metal wire; the proper high water temperature is beneficial to cleaning the electrothermal metal wire;

(3) and (3) descaling process: preparing a component B by using clear water, so that each liter of the component B contains 150g of hydrochloric acid, 10g of sulfuric acid and 10g of nitric acid, placing the prepared component B into a container, then soaking the electric heating alloy wire subjected to primary water washing into the pickling solution of the component B, regulating the temperature of the pickling solution of the component B to be 40-45 ℃, soaking for 15min, and then taking out the electric heating alloy wire;

(4) and (3) secondary water washing and drying: and (3) washing the electric heating alloy wires after descaling by using high-pressure water with the pressure of 7MPa at the flow rate of 10L/min, and then drying.

The surface of the pickled electric heating alloy wire meets the quality requirement.

The pickling solution and the pickling method of the embodiment can completely remove the residual grease and oxide scale layer on the surface of the electric heating alloy wire after wire drawing through two pickling processes of degreasing and oxide scale removing, so that the performance of the electric heating alloy wire is improved; acid pickling components such as silicate, hydrofluoric acid and the like are not used, the acid pickling solution is convenient to treat, and the environmental pollution is avoided.

The electric heating alloy wire treated by the embodiment has smooth surface, good quality and no punctate corrosion phenomenon, realizes low-loss acid washing, and protects the quality and the service performance of the electric heating alloy wire.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.