WO2019006685A1

WO2019006685A1 - Polishing agent, stainless steel component, and polishing treatment method therefor

Info

Publication number: WO2019006685A1
Application number: PCT/CN2017/091753
Authority: WO
Inventors: 方招娣
Original assignee: 深圳市长宏泰科技有限公司
Priority date: 2017-07-04
Filing date: 2017-07-04
Publication date: 2019-01-10
Also published as: CN110809613A

Abstract

A polishing agent, a stainless steel component, and a polishing treatment method therefor. The polishing agent is used for surface pretreatment of stainless steel components, and based on 500 parts by weight, comprises the following components in parts by weight: 2 parts to 10 parts of sulfonamide, 2 parts to 10 parts of benzimidazole, 2 parts to 10 parts of glycerine, 2 parts to 10 parts of nitric acid, 5 parts to 20 parts of cerium dioxide, 1 part to 5 parts of sodium dodecyl sulfate, 1 part to 6 parts of malic acid, and the balance water. After the treatment using the polishing agent, the surface of the stainless steel component is clean and bright. The whole polishing treatment method has a simple process, is environmentally-friendly and odorless, has no escape of harmful gas, is convenient to operate, and has low using costs.

Description

Polishing agent, stainless steel piece and polishing treatment method thereof

[0001] The present invention relates to the field of iron surface treatment technology, and in particular to a polishing agent, a stainless steel member, and a polishing treatment method thereof.

Background technique

[0002] In order to improve the surface properties or appearance of a product, the surface treatment technology of the workpiece is usually applied. For example, surface treatment processes for stainless steel, zinc alloys, aluminum, and the like are well known in a variety of industries. Moreover, most workpieces require pre-treatment before surface treatment, for example, cleaning, decontamination and degreasing, and metal parts for certain applications need to be polished.

[0003] Generally in the mechanical processing and electrical and electronic industries, stainless steel and stainless steel alloys are commonly used for clean and bright processing, that is, polishing treatment. Conventional polishing agents generally use mechanical polishing or tri-acid polishing. Among them, mechanical polishing has a poor polishing effect on the complex geometry of the workpiece. The tri-acid in the tri-acid polishing is concentrated nitric acid, concentrated nitric acid, and concentrated nitric acid reacts violently under high temperature conditions. The gas volatilizes a lot, is unsafe and not environmentally friendly, and has a high risk of energy consumption.

technical problem

[0004] In view of the above, a safe and environmentally friendly polishing agent is provided, which is used at room temperature, has no odor, and has low energy consumption, and a stainless steel member polishing method and a stainless steel member obtained by polishing.

Problem solution

Technical solution

[0005] A polishing agent comprising, by weight of 500 parts by weight, of the following components by weight: 2-10 parts of sulfonamide, 2-10 parts of benzimidazole, 2-10 parts of glycerol, 2-10 parts of nitric acid, 5-20 parts of cerium oxide, 1-5 parts of sodium lauryl sulfate, 1-6 parts of malic acid and the balance of water.

[0006] A stainless steel member polishing treatment method, comprising the steps of: formulating a polishing agent as described above; controlling the chemical mechanical polishing liquid to have a pH of 2-7, more preferably 2-5, using hydroxide Sodium or nitric acid adjusts the pH. The stainless steel piece is immersed in the polishing agent solution, and after a predetermined daytime treatment, the stainless steel piece is washed.

[0007] Also, a stainless steel member whose surface is polished by a stainless steel piece polishing process as described above Advantageous effects of the invention

Beneficial effect

[0008] After the above polishing agent treatment, the surface of the stainless steel piece is clean and bright, and the whole polishing treatment method is simple, safe, environmentally friendly, odorless, no harmful gas escapes, convenient to operate, and low in use cost.

Embodiments of the invention

The present invention will be described in detail below with reference to specific embodiments.

[0010] Embodiments of the present invention provide a polishing agent for surface pretreatment of stainless steel parts, comprising 500 parts by weight, including the following parts by weight: 2-10 parts of sulfonamide, 2-10 parts of benzimidazole, 2 - 10 parts of glycerol, 2-10 parts of nitric acid, 5-20 parts of cerium oxide, 1-5 parts of sodium lauryl sulfate, 1-6 parts of malic acid and the balance of water.

[0011] Specifically, the sulfonamide is preferably 4-8 parts by weight. The benzimidazole is preferably 4 to 8 parts by weight, the glycerin is preferably 4 to 8 parts by weight, and the nitric acid is preferably 4 to 8 parts by weight. The cerium oxide is preferably 10-15 parts by weight, and the sodium lauryl sulfate is preferably 2-4 parts by weight. The malic acid is in an amount of 3-5 parts by weight.

[0012] In the above polishing agent, a better polishing effect is achieved by controlling the balance of the respective distribution ratios. Nitric acid is used to remove scale and polish, malic acid, benzimidazole and glycerol control reaction rate and increase workpiece corrosion resistance, sulfonamide is used for auxiliary polishing, sodium lauryl sulfate is used to remove oil and increase wettability , cerium oxide is used to grind the workpiece to reduce the roughness of the workpiece.

[0013] An embodiment of the present invention further provides a method for polishing a stainless steel member, comprising the steps of: formulating a polishing agent as described above; controlling the pH of the chemical mechanical polishing liquid to be 2-7, more preferably 2 -5. The stainless steel piece is immersed in the polishing agent solution, and after a predetermined daytime treatment, the stainless steel piece is washed and dried.

[0014] Specifically, the predetermined time is 1-15 minutes. Further, after polishing, it is passivated, then washed with water and dried. After polishing, the temperature is controlled at 20 ° C - 25 ° C, that is, polishing at room temperature. Further, before polishing, pretreatment such as degreasing, degreasing and descaling is performed.

[0015] Embodiments of the present invention also provide a stainless steel member that is subjected to a polishing treatment by a stainless steel member polishing treatment method as described above to form a stainless steel member to form a clean and bright surface. After the above polishing agent treatment, the surface of the stainless steel piece is clean and bright, and the whole polishing treatment method is simple, safe, environmentally friendly and odorless. No harmful gas escapes, easy to operate, and low in cost of use.

[0016] The details are illustrated by the following embodiments.

[0017] Embodiment 1

[0018] The components are mixed in the following parts by weight (total amount of 500 parts by weight) including: 2 parts of sulfonamide, 2 parts of benzimidazole, 2 parts of glycerol, 2 parts of nitric acid, 5 parts of cerium oxide, 1 part Sodium lauryl sulfate, 1 part malic acid and the balance water.

[0019] Treatment method: preparing a polishing agent; controlling the polishing agent PH value of 3. (Stainless steel parts should be degreased and deoxidized, then washed) Then the treated stainless steel parts are immersed in the polishing agent solution. After shaking for 15 minutes, the stainless steel parts are washed, then passivated, washed, and dried.

[0020] After the above polishing agent solution treatment, no gas and smoke escape. After polishing, the surface of the workpiece is observed, and the entire surface is clean and bright, the color is uniform, and there is no foreign matter such as speckle particles, and the brightness is increased by more than 35% before polishing.

Embodiment 2

[0022] The components are mixed in the following parts by weight (total amount of 500 parts by weight) including: 5 parts of sulfonamide, 5 parts of benzimidazole, 5 parts of glycerol, 5 parts of nitric acid, 10 parts of cerium oxide, 2 parts Sodium lauryl sulfate, 2.5 parts of malic acid and the balance of water.

[0023] Treatment method: preparing a polishing agent; controlling the polishing agent PH value is 2. (Stainless steel parts should be degreased and deoxidized, then washed) Then the treated stainless steel parts are immersed in the polishing agent solution. After shaking for 15 minutes, the stainless steel parts are washed, then passivated, washed, and dried.

[0024] After the above polishing agent solution treatment, no gas and smoke escape. After polishing, the surface of the workpiece is observed, and the entire surface is clean and bright, the color is uniform, and there is no foreign matter such as speckle particles, and the brightness is increased by 45% or more than before polishing.

Embodiment 3

[0026] The components are mixed in the following parts by weight (total amount of 500 parts by weight) including: 7.5 parts of sulfonamide, 7.5 parts of benzimidazole, 7.5 parts of glycerin, 7.5 parts of nitric acid, 15 parts of cerium oxide, 4 parts Sodium lauryl sulfate, 4 parts of malic acid and the balance of water.

[0027] Treatment method: preparing a polishing agent; controlling the polishing agent PH value is 2. (Stainless steel parts should be degreased and deoxidized, then washed) Then the treated stainless steel parts are immersed in the polishing agent solution. After shaking for 10 minutes, the stainless steel parts are washed, then passivated, washed, and dried.

[0028] After the above polishing agent solution treatment, no gas and smoke escape. After polishing, observe the surface of the workpiece, the whole The surface is clean and bright, the color is the same, no foreign matter such as speckle particles, and the brightness is increased by more than 60% before polishing.

Embodiment 4

[0030] The components are mixed in the following parts by weight (total amount of 500 parts by weight) including: 10 parts of sulfonamide, 10 parts of benzimidazole, 10 parts of glycerol, 10 parts of nitric acid, 20 parts of cerium oxide, 5 parts Sodium lauryl sulfate, 6 parts of malic acid and the balance of water.

[0031] Treatment method: preparing a polishing agent; controlling the polishing agent PH value is 2. (Stainless steel parts should be degreased and deoxidized, then washed) Then the treated stainless steel parts are immersed in the polishing agent solution. After shaking for 5 minutes, the stainless steel parts are washed, then passivated, washed, and dried.

[0032] After the above polishing agent solution treatment, no gas and smoke escape. After polishing, the surface of the workpiece is observed, and the entire surface is clean and bright, the color is uniform, and there is no foreign matter such as speckle particles, and the brightness is increased by more than 65% before polishing.

[0033] It should be noted that the present invention is not limited to the above embodiments, and other changes may be made by those skilled in the art according to the inventive spirit of the present invention, and the changes according to the inventive spirit of the present invention should be It is intended to be included within the scope of the invention as claimed.

Claims

Claim

[Claim 1] A polishing agent comprising, by weight of 500 parts by weight, of the following components: 2- 10 parts of sulfonamide, 2 - 10 parts of benzimidazole, 2 - 10 parts of glycerin, 2- 10 parts nitric acid, 5-2 0 parts cerium oxide, 1-5 parts sodium lauryl sulfate, 1-6 parts malic acid and the balance water.

[Claim 2] The polishing agent according to claim 1, wherein the sulfonamide is 4-8 parts by weight

[Claim 3] The polishing agent according to claim 1, wherein the benzimidazole is 4-8 parts by weight.

[Claim 4] The polishing agent according to claim 1, wherein the glycerin is 4 parts by weight

-8 servings.

[Claim 5] The polishing agent according to claim 1, wherein the nitric acid is in an amount of 4 to 8 parts by weight.

[Claim 6] The polishing agent according to claim 1, wherein the cerium oxide has a particle diameter of 20 to 150 nm, more preferably 30 to 120 nm, and 10 to 15 parts by weight.

[Claim 7] The polishing agent according to claim 1, wherein the sodium lauryl sulfate is in an amount of 2 to 4 parts by weight. The malic acid is in an amount of 3-5 parts by weight.

[Claim 8] A method of polishing a stainless steel member, comprising the steps of: formulating the polishing agent according to any one of claims 1 to 7; controlling the pH of the chemical mechanical polishing liquid to be 2-7, The preferred value is 2-5, and the pH can be adjusted with sodium hydroxide or nitric acid. The stainless steel piece is immersed in the polishing agent solution, and after the predetermined daytime treatment, the stainless steel piece is washed and the next process is performed.

[Claim 9] The method for polishing a stainless steel member according to claim 1, wherein after being polished, it is passivated, and then washed with water, and the predetermined turn is 1 to 15 minutes.

[Claim 10] A stainless steel member characterized in that the surface of the stainless steel member is polished by the stainless steel member polishing treatment method according to claim 8.