阅读说明：本技术 一种把手连接横杆的表面处理工艺 (Surface treatment process for handle connecting cross rod ) 是由 李春兵 于 2021-08-05 设计创作，主要内容包括：本申请涉及金属制品领域,具体公开了一种把手连接横杆的表面处理工艺,包括如下操作：将精加工后的金属件置于A溶液槽内浸泡,浸泡后送入隧道炉内烘干,待烘干后用静电喷枪在金属件表面喷涂静电粉末涂料；其中,A溶液槽内的溶液原料包括如下重量份数的组分：表面活性剂10～15份；光触媒溶液15～20份；水120～150份；在金属件置于A溶液槽内浸泡时,对A溶液槽进行超声震荡,并对A溶液槽内的溶液施加紫外灯照射。本工艺能够解决粉末涂层凹孔问题、降低烘烤成本,解决成品细菌滋生的问题。(The application relates to the field of metal products, and particularly discloses a surface treatment process for a handle connecting cross rod, which comprises the following operations: placing the metal piece after finish machining in a solution tank A for soaking, sending the soaked metal piece into a tunnel furnace for drying, and spraying electrostatic powder coating on the surface of the metal piece by using an electrostatic spray gun after drying; the solution raw materials in the solution A tank comprise the following components in parts by weight: 10-15 parts of a surfactant; 15-20 parts of photocatalyst solution; 120-150 parts of water; when the metal piece is placed in the solution A tank to be soaked, the solution A tank is subjected to ultrasonic oscillation, and ultraviolet lamp irradiation is applied to the solution in the solution A tank. The process can solve the problem of shrinkage of the powder coating, reduce the baking cost and solve the problem of bacterial breeding of the finished product.)

1. A surface treatment process for a handle connecting cross rod is characterized by comprising the following operations:

placing the metal piece after finish machining in a solution tank A for soaking, sending the soaked metal piece into a tunnel furnace for drying, and spraying electrostatic powder coating on the surface of the metal piece by using an electrostatic spray gun after drying;

the solution raw materials in the solution A tank comprise the following components in parts by weight:

10-15 parts of a surfactant;

15-20 parts of photocatalyst solution;

120-150 parts of water;

when the metal piece is placed in the solution A tank to be soaked, the solution A tank is subjected to ultrasonic oscillation, and ultraviolet lamp irradiation is applied to the solution in the solution A tank.

2. The surface treatment process of a handle connecting cross bar according to claim 1, wherein the surface treatment process comprises the following steps: the solution raw material in the solution A tank also comprises 2-5 parts by weight of zeolite particles.

3. The surface treatment process of the handle connecting cross rod as claimed in claim 1, wherein the metal piece is soaked in the solution A tank, and then the metal piece is sequentially soaked in the aqueous solution and the coupling agent solution.

4. The process of claim 3, wherein the coupling agent in the coupling agent solution is a silane coupling agent.

5. The process of claim 3, wherein the metal member is placed in the coupling agent solution and the coupling agent solution is ultrasonically agitated.

6. The surface treatment process of the handle connecting cross rod as claimed in claim 1, wherein the metal piece is immersed in the solution A for 15-20 min.

7. The process of claim 1, wherein the surfactant is a cationic surfactant.

8. The surface treatment process for the handle connecting cross bar according to claim 1, wherein the electrostatic powder coating sprayed on the surface of the metal piece is transparent

And (4) forming.

Technical Field

The application relates to the field of metal products, in particular to a surface treatment process of a handle connecting cross rod.

Background

The handle on the treadmill is a structure for holding and supporting.

At present, chinese utility model patent with publication number CN210170754U discloses a treadmill, including the runway, install stabilizer blade, the first handrail in the runway both sides, have the second handrail between two first handrails, the second handrail is from the intermediate position downwardly curved.

Similar to the treadmill described above, the first handrail is the handle structure described above, and the second handrail is also referred to as a handle connecting cross bar because the second handrail is connected between the two handles. The handle connecting cross bar is generally made of nonferrous metal alloy, and a towel for wiping sweat is generally hung on the handle connecting cross bar in the running process of people.

In the preparation process of the handle connecting cross rod, the handle connecting cross rod needs to be formed after die casting, finish machining and surface treatment processes in sequence. And in the surface treatment process of the handle connecting cross rod, the existing operation process is generally as follows: and (3) soaking the metal piece after finish machining in a solution tank of a surfactant, sending the soaked metal piece into a tunnel furnace for drying, and spraying electrostatic powder coating on the surface of the metal piece by using an electrostatic spray gun after drying.

The surface treatment process of the handle connecting cross rod similar to the above in the prior art has the following defects: on one hand, the existing metal workpiece is only soaked in a solution tank of a surfactant, and because the metal workpiece cannot be washed in an area of the solution tank manually, oil stains or adhered substances on the surface of the workpiece are not easy to fall off from the surface of the metal workpiece, so that the problem that a subsequent powder coating generates concave holes is caused.

On the other hand, after the metal workpiece is taken out from the solution tank of the surfactant, the surface of the metal workpiece can generate a water hanging phenomenon, and at the moment, the metal workpiece needs a longer time to be sent into the tunnel furnace for drying, so that the baking cost is increased, and the processing technology is long.

On the other hand, the handle connecting cross rod prepared by the process has the advantages that the coating on the surface of the handle connecting cross rod can be in contact with sweat frequently, bacteria are easily bred on the coating, the coating is damaged in an accelerating manner, and the problem that the handle connecting cross rod is rusted in an accelerating manner is solved.

Therefore, a new solution is needed to solve the above problems.

Disclosure of Invention

In order to solve powder coating shrinkage pool problem, reduce and toast the cost, solve the problem that finished product bacterium breeied, this application provides a surface treatment process of horizontal pole is connected to handle, adopts following technical scheme:

a surface treatment process of a handle connecting cross rod comprises the following operations:

placing the metal piece after finish machining in a solution tank A for soaking, sending the soaked metal piece into a tunnel furnace for drying, and spraying electrostatic powder coating on the surface of the metal piece by using an electrostatic spray gun after drying;

the solution raw materials in the solution A tank comprise the following components in parts by weight:

10-15 parts of a surfactant;

15-20 parts of photocatalyst solution;

120-150 parts of water.

When the metal piece is placed in the solution A tank to be soaked, the solution A tank is subjected to ultrasonic oscillation, and ultraviolet lamp irradiation is applied to the solution in the solution A tank.

By adopting the technical scheme, firstly, the surfactant has the function of deoiling and degreasing. Secondly, under the assistance of ultrasonic oscillation, the adhesive on the surface of the metal piece can be shaken off, and the deoiling and degreasing functions of the surfactant can be accelerated. Moreover, the active ingredient of photocatalyst solution is photocatalyst, and it can become the membrane (this membrane is photocatalyst layer) after the deoiling on the metalwork surface, and photocatalyst layer has the function of disinfecting, can solve the metal horizontal pole in the body-building process, and sweat remains on the metal surface and the bacterium that leads to breeds, the rusty problem of metalwork.

In addition, the photocatalyst layer has the function of decontamination under the irradiation of an ultraviolet lamp, and can lead the substances such as hydroxyl, halide, carboxylic acid and the like in the solution A to generate oxidation-reduction reaction and be gradually degraded into H₂O and CO₂On the one hand, the solution A can be purified, on the other hand, the problem that the water quantity of the solution A is reduced due to the problem that water is hung on a metal piece can be reduced, and the service life of the solution A is prolonged.

In addition, the photocatalyst layer formed on the surface of the metal piece has quick drying property, and water is not easy to hang on the photocatalyst layer, so that the problem of water hanging of the metal piece after soaking in the solution A is further solved, the drying efficiency of the metal piece is accelerated, the baking cost is reduced, and the processing process is long.

In addition, the photocatalyst layer formed on the surface of the metal piece is a self-cleaning coating film, and has good photoinduction super-hydrophilicity after being irradiated by an ultraviolet lamp, organic dirt and inorganic dirt are not easy to attach to the surface of the coating film due to the hydrophilicity and the photocatalysis, the surface of the metal piece is purified under the assistance of ultrasonic vibration and a surfactant, the surface cleanliness of the metal piece is improved, the problem of concave holes generated due to unclean surface of the metal piece in a subsequent powder coating is avoided, and the integrity and the stability of the powder coating after the surface treatment of the metal piece are ensured.

Preferably, the solution raw material in the solution A tank also comprises 2-5 parts by weight of zeolite particles.

Through adopting above-mentioned technical scheme, zeolite granule can accelerate photocatalyst's sewage purification efficiency under the irradiation of ultraviolet ray for A solution has self-purification function, prolongs A solution's life.

Preferably, after the metal piece is soaked in the solution A tank, the metal piece is sequentially soaked in the aqueous solution and the coupling agent solution.

By adopting the technical scheme, the surfactant hanging on the wall on the surface of the metal piece can be removed after the metal piece taken out from the solution A is washed by water. When the metal piece is taken out from the water tank, the photocatalyst layer on the surface of the metal piece has quick drying property, so that water cannot be brought into the coupling agent solution, the concentration of the coupling agent can be ensured, the coupling agent can improve the adhesion between the photocatalyst layer and the metal piece, the stability of the photocatalyst layer on the surface of the metal piece is improved, and the antibacterial effect of the metal piece is further improved.

Preferably, the coupling agent in the coupling agent solution is a silane coupling agent.

By adopting the technical scheme, the silane coupling agent has low cost and good effect, and is suitable for industrial use.

Preferably, the coupling agent solution is ultrasonically agitated while the metal piece is placed in the coupling agent solution.

By adopting the technical scheme, experiments can deduce that the coupling efficiency of the coupling agent can be accelerated by ultrasonic oscillation.

Preferably, the metal piece is placed in the solution A tank and soaked for 15-20 min.

By adopting the technical scheme, the 15-20 min A solution soaking time can ensure that the photocatalyst is formed into a film on one hand, and can improve the cleanliness of the surface of the metal piece on the other hand.

Preferably, the surfactant is a cationic surfactant.

By adopting the technical scheme, the part of the cationic surfactant which acts is cations, has high water solubility, is stable in acidic and alkaline solutions, is not easy to decompose in the solution A, has a bactericidal effect, and further plays a role in purifying the metal surface.

Preferably, the electrostatic powder coating sprayed on the surface of the metal piece is transparent.

By adopting the technical scheme, the transparent coating can be formed on the surface of the metal piece after the transparent electrostatic powder coating is sprayed, so that illumination can penetrate through the coating to contact the photocatalyst layer, and the sterilization efficiency of the photocatalyst layer in the use process of the metal piece is ensured.

In summary, the present application has the following beneficial effects:

1. because the cleaning solution simultaneously containing the surfactant and the photocatalyst solution is adopted, oil stains on the surface of the metal piece are fallen off by the surfactant, the photocatalyst layer is formed after the surface of the metal piece is purified, and the photocatalyst layer has the performances of decontamination, sterilization, quick drying and photoinduction super-hydrophilicity under the irradiation of an ultraviolet lamp, so that the problem of water hanging after the metal piece is cleaned can be solved, the baking market of a tunnel furnace is shortened, and the metal piece is endowed with the sterilization and rust prevention effects.

2. After the metal part is soaked in the A solution tank, the metal part is sequentially soaked in the aqueous solution and the coupling agent solution, the surfactant on the surface of the metal part can be removed due to water, and the coupling agent can reinforce the adhesive strength of the photocatalyst layer and the metal part, so that the effect of the high-stability photocatalyst layer is obtained.

3. This application is through adding zeolite granule in A solution, and zeolite granule can accelerate photocatalyst's sewage purification efficiency under the irradiation of ultraviolet ray for A solution has from purification performance, prolongs A solution's life.

Detailed Description

The present application will be described in further detail with reference to examples.

Examples

Example 1: a surface treatment process of a handle connecting cross rod comprises the following operations:

and (3) placing the metal piece after finish machining in a solution A tank for soaking for 15min, and sending the soaked metal piece into a tunnel furnace for drying at the baking temperature of 150 +/-5 ℃ for 20 min. And after drying, spraying electrostatic powder coating on the surface of the metal piece by using an electrostatic spray gun, wherein the electrostatic powder coating sprayed on the surface of the metal piece is transparent.

The solution in the solution A tank is the solution A, and the raw materials and the parts by weight of the solution A are shown in Table 1. In this embodiment, the surfactant is a cationic surfactant, specifically, a quaternary ammonium salt cationic surfactant. The photocatalyst solution in this embodiment is purchased from Ningbo Mingnan New materials science and technology, Inc. as a high-efficiency photocatalyst purification solution.

When the metal piece is placed in the solution A tank to be soaked, ultrasonic oscillation is carried out on the solution A tank, the ultrasonic frequency is 60KHz, and the ultrasonic time lasts until the metal piece is taken out of the solution A tank. An ultraviolet lamp is arranged outside an opening of the solution A tank and irradiates towards the solution A.

Examples 2 to 3: the surface treatment process of the handle connecting cross rod is different from the surface treatment process of the embodiment 1 in that: the components and parts by weight of the solution A are shown in Table 1.

TABLE 1 Components and parts by weight of solutions A in examples 1-3

Example 4: the surface treatment process of the handle connecting cross rod is different from the surface treatment process of the embodiment 1 in that: the solution raw material in the solution A tank also comprises 2 parts by weight of zeolite particles.

Example 5: the surface treatment process of the handle connecting cross rod is different from the surface treatment process of the embodiment 1 in that: the solution raw material in the solution A tank also comprises 5 parts by weight of zeolite particles.

Example 6: the surface treatment process of the handle connecting cross rod is different from the surface treatment process of the embodiment 1 in that: and after the metal piece is soaked in the solution A tank, sequentially soaking the metal piece in the aqueous solution and the coupling agent solution. The time for soaking the aqueous solution is 5min, and the time for soaking the coupling agent is 15 min. In this example, the coupling agent is a silane coupling agent, and the concentration of the coupling agent in the coupling agent solution is 5%.

Example 7: the surface treatment process of the handle connecting cross rod is different from the surface treatment process of the embodiment 6 in that: the time for soaking the coupling agent is 20 min.

Example 8: the surface treatment process of the handle connecting cross rod is different from the surface treatment process of the embodiment 6 in that: when the metal piece is placed in the coupling agent solution, the coupling agent solution is subjected to ultrasonic oscillation, and the frequency of the ultrasonic oscillation is 60 KHz.

Example 9: the surface treatment process of the handle connecting cross rod is different from the surface treatment process of the embodiment 1 in that: the solution raw material in the solution A tank also comprises 2 parts by weight of zeolite particles.

And after the metal piece is soaked in the solution A tank, sequentially soaking the metal piece in the aqueous solution and the coupling agent solution. The time for soaking the aqueous solution is 5min, and the time for soaking the coupling agent is 15 min. In this example, the coupling agent is a silane coupling agent, and the concentration of the coupling agent in the coupling agent solution is 5%.

When the metal piece is placed in the coupling agent solution, the coupling agent solution is subjected to ultrasonic oscillation, and the frequency of the ultrasonic oscillation is 60 KHz.

Comparative example

Comparative example 1: the surface treatment process of the handle connecting cross rod is different from the surface treatment process of the embodiment 1 in that: the solution A is free of photocatalyst solution.

Performance testing test samples: the handle connecting rails obtained in examples 1 to 9 were used as test samples 1 to 9, and the handle connecting rail obtained in comparative example 1 was used as control sample 1.

Test-appearance test method: and (4) sampling and observing the appearance of the powder coating on the surface of the handle connecting cross rod, and counting the probability of the occurrence of concave holes on the powder coating on the surface of the handle connecting cross rod.

And (3) test results: the apparent test results of the test samples 1 to 9 and the control sample 1 are shown in Table 2.

Test II antibacterial ability test method: the test is carried out according to the national standard GB/T30706-2014 test method and evaluation for the antibacterial performance of photocatalytic antibacterial materials and products under visible light irradiation. The maximum 5 values and the minimum 5 values of each group were discarded and the remainder averaged.

And (3) test results: the results of the antibacterial ability tests of the test samples 1 to 9 and the control sample 1 are shown in Table 2.

TABLE 2 test results of test samples 1 to 9 and control sample 1

And (3) data analysis: it can be seen from the combination of examples 1 to 9 and comparative example 1 and table 2 that the number of the concave holes appearing in each 1000 products in the control sample 1 is more than 20, and the number of the concave holes appearing in each 1000 products in the test samples 1 to 9 is only one, which shows that the photocatalyst solution as a component of the metal member surface treatment solution can effectively reduce the problem of the occurrence of the concave holes in the products.

Meanwhile, it can be seen from the combination of examples 1 to 9 and comparative example 1 and table 2 that the antibacterial rate of the control sample 1 is below 90%, and does not meet the standard of "having antibacterial effect" within the national standard. The antibacterial rates of the test samples 1-9 are all above 90%, which reaches the standard of 'having antibacterial action' in the national standard, and the antibacterial rates of the test samples 6-9 added with the working procedure of soaking the coupling agent are all above 99%, which reaches the standard of 'having stronger antibacterial action' in the national standard. The photocatalyst solution is used as the component of the metal piece surface treatment liquid to effectively form an antibacterial action layer on the metal surface, and the antibacterial performance of the metal piece is greatly improved.

According to the comparison between the test sample 7 and the test sample 8, after the test sample 8 vibrates the coupling agent and the metal piece by utilizing ultrasound, the antibacterial effect of the coupling agent is superior to that of the test sample 7 which is not subjected to ultrasonic vibration, so that the efficiency of the coupling agent is improved after the ultrasonic vibration is used, and the adhesion of a photocatalyst layer on the surface of the metal piece is accelerated.

The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.