A method for vacuum coating a kitchen sink

Abstract

The present invention relates to the technical field of metal surface treatment, and specifically relates to a method for vacuum coating of a kitchen sink, which is obtained through the following steps: S1. Take the sink for pretreatment; S2. Transfer the sink into a vacuum furnace, evacuate and heat it, close the throttle valve, introduce argon gas, turn on the bias voltage, and maintain the duty cycle for activation; S3. Close the argon gas, adjust the vacuum degree, introduce argon gas, set the bias voltage, maintain the duty cycle, turn on the zirconium arc target for bombardment and undercoating, adjust the vacuum degree, and close the throttle valve; S4. Introduce argon gas and nitrogen gas again, set the bias voltage and the duty cycle, turn on the zirconium arc target and the titanium arc target, and deposit to form a zirconium-titanium alloy layer; S5. Close the zirconium arc target, turn on the chromium arc target, open the acetylene flowmeter to introduce acetylene gas, keep the chromium arc target and the titanium arc target equal, deposit a titanium-chromium alloy layer, and complete the coating. The present invention adopts vacuum ion coating technology to perform hardening treatment on the surface of the stainless steel sink, so that the sink is not easily scratched and the service life is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of metal surface treatment, and particularly relates to a method for vacuum coating a kitchen sink. Background Art

[0002] Since stainless steel has high strength, hardness and wear resistance, and good corrosion resistance, it is now widely used as a component in daily necessities. Among them, stainless steel decorative plates are widely used in kitchen sinks. However, since the stainless steel decorative plate is a high-gloss mirror surface, if the surface film layer is relatively soft, it is easily scratched and deformed, affecting the appearance, thus affecting the overall aesthetics of the kitchen. Generally, the friction coefficient of the metal surface is relatively high and the surface smoothness is insufficient. In order to improve the surface hardness and scratch resistance of stainless steel, surface treatment needs to be carried out on this metal stainless steel substrate. Summary of the Invention

[0003] In order to overcome the disadvantages and deficiencies existing in the prior art, the purpose of the present invention is to provide a method for vacuum coating a kitchen sink, which uses vacuum ion coating technology to perform hardening treatment on the surface of the stainless steel sink, so that the sink is not easily scratched and deformed, and the service life is extended; when coating, depositing zirconium by an arc target can effectively improve the bonding force between the coating and the stainless steel substrate, and the deposited zirconium-titanium alloy layer can greatly improve the hardness of the stainless steel substrate. In addition, the deposited titanium-chromium alloy layer can keep the color of the stainless steel unchanged.

[0004] The purpose of the present invention is achieved by the following technical solutions: A method for vacuum coating a kitchen sink is prepared by the following steps:

[0005] S1. Take the sink for ultrasonic degreasing and de-esterification, dry it after cleaning, and set aside;

[0006] S2. Transfer the sink processed in step S1 into a vacuum furnace, evacuate to 8.0E-3 Pa, heat to 150 - 200 °C, close the throttle valve of the vacuum furnace, introduce 800 - 1000 SCCM of argon gas, set the bias voltage to 500 - 800 V, keep the duty cycle at 50 - 75%, and then perform ion glow activation for 300 - 600 s, and set aside;

[0007] S3. After completion of activation, close the argon gas, open the throttle valve to adjust the vacuum degree to 6.0E-3 Pa, close the throttle valve, introduce 200 - 300 SCCM of argon gas to make the vacuum degree reach 1.0E-2.0 Pa, reset the bias voltage to 450 - 550 V, keep the duty cycle at 50 - 70%, open the zirconium arc target for bombardment and priming, after completion, close the argon gas, open the throttle valve, adjust the vacuum degree to 5.0E-3 Pa, close the throttle valve, and set aside;

[0008] S4. Introduce argon at 300 - 400 SCCM and nitrogen at 90 - 110 SCCM into the system in step S3 again to make the vacuum degree reach 1.5E - 1.0 Pa, set the bias voltage to 75 - 85 V, the duty cycle to 65 - 75%, turn on the zirconium arc target and the titanium arc target, keep the zirconium arc target and the titanium arc target equal, deposit to form a zirconium-titanium alloy layer for standby;

[0009] S5. After completing step S4, turn off the zirconium arc target, turn on the chromium arc target, open the acetylene flowmeter to introduce 50 SCCM of acetylene gas, keep the chromium arc target and the titanium arc target equal, deposit a titanium-chromium alloy layer to complete the film coating.

[0010] In the present invention, a vacuum ion coating technology is used to perform hardening treatment on the surface of the stainless steel sink, so that the sink is not easily scratched and the service life is extended; when coating, depositing zirconium by an arc target can effectively improve the bonding force between the coating and the stainless steel substrate, and the deposited zirconium-titanium alloy layer can greatly improve the hardness of the stainless steel substrate. In addition, the deposited titanium-chromium alloy layer can keep the color of the stainless steel unchanged.

[0011] Preferably, in step S1, a degreasing agent is used for degreasing and de-esterifying. The degreasing agent is made of the following components by weight percentage: sodium hydroxide 5 - 10%, fatty alcohol polyoxyethylene ether 8 - 12%, nonylphenol polyoxyethylene ether 6 - 10%, oleic acid 1 - 5%, hexamethylenetetramine 4 - 8%, Lan-826 multi-purpose corrosion inhibitor 1 - 4%, and the balance is water.

[0012] The degreasing agent used in the present invention has strong degreasing ability. Therefore, when degreasing stainless steel, manual scrubbing treatment is no longer required. Only using the degreasing agent can make the stainless steel workpiece enter the next process production, which not only saves labor costs but also improves the degreasing efficiency, bringing great convenience to the production of the factory. The Lan-826 multi-purpose corrosion inhibitor used therein not only enhances the saponification reaction ability but also can improve the uniform corrosion property of the cleaning agent and reduce the introduction of metal ions; the fatty alcohol polyoxyethylene ether 8 - 12 and nonylphenol polyoxyethylene ether used as surfactants have the advantages of good water solubility, strong penetration force, and no pollution; the addition of oleic acid reduces foam expansion and bath liquid loss, making the whole production method more reasonable and the whole production process more efficient, achieving unexpected good results.

[0013] Preferably, in step S3, the current during the zirconium arc target bombardment for underlaying is 85 - 95 A, and the bombardment time is 180 - 360 s.

[0014] Preferably, in step S4, the zirconium arc target current is 85 - 95 A, the time is 30 - 40 min; the titanium arc target current is 85 - 95 A, and the time is 30 - 40 min.

[0015] Preferably, in step S5, the chromium arc target current is 75 - 85 A, and the chromium arc target and the titanium arc target are deposited equally for 600 - 900 s.

[0016] In the vacuum ion coating technology of the present invention, the currents and deposition times of each arc need to be baked, so as to better improve the performance of stainless steel in the finally obtained coating.

[0017] The beneficial effects of the present invention are as follows: The present invention uses the vacuum ion coating technology to perform hardening treatment on the surface of the stainless steel sink, so that the sink is not easily scratched and its service life is extended; when coating, depositing zirconium by the arc target can effectively improve the bonding force between the coating and the stainless steel substrate, and the deposited zirconium-titanium alloy layer can greatly improve the hardness of the stainless steel substrate. In addition, the deposited titanium-chromium alloy layer can keep the color of the stainless steel unchanged. Specific embodiments

[0018] For the convenience of understanding by those skilled in the art, the present invention will be further described below in conjunction with embodiments. The content mentioned in the embodiments does not limit the present invention.

[0019] Embodiment 1

[0020] A method for vacuum coating of a kitchen sink is prepared by the following steps:

[0021] S1. Take the sink for ultrasonic degreasing and de-esterification, dry it after cleaning, and set aside;

[0022] S2. Transfer the sink processed in step S1 into a vacuum furnace, evacuate to 8.0E, heat to 150 °C, close the throttle valve of the vacuum furnace, introduce 800 SCCM argon gas, set the bias voltage to 500 V, keep the duty cycle at 50%, and then perform ion glow activation for 300 s, and set aside;

[0023] S3. After the activation is completed, close the argon gas, open the throttle valve to adjust the vacuum degree to 6.0E, close the throttle valve, introduce 200 SCCM argon gas to make the vacuum degree reach 1.0 EPa, set the bias voltage to 450 V again, keep the duty cycle at 50%, turn on the zirconium arc target for bombardment and priming. After completion, close the argon gas, open the throttle valve, adjust the vacuum degree to 5.0E, and close the throttle valve, and set aside;

[0024] S4. Re-introduce 300 SCCM argon gas and 90 SCCM nitrogen gas into the system in step S3 to make the vacuum degree reach 1.5E, set the bias voltage to 75 V, the duty cycle to 65%, turn on the zirconium arc target and the titanium arc target, keep the zirconium arc target and the titanium arc target equal, deposit to form a zirconium-titanium alloy layer, and set aside;

[0025] After completing step S4, turn off the zirconium arc target, turn on the chromium arc target, open the acetylene flowmeter to introduce 50 SCCM of acetylene gas, keep the chromium arc target and the titanium arc target equivalent, deposit the titanium chromium alloy layer, and complete the coating.

[0026] In step S1, degreasing and degreasing with a degreaser, the degreaser is made of the following components by weight percentage: 5% sodium hydroxide, 8% fatty alcohol polyoxyethylene ether, 6% nonylphenol polyoxyethylene ether, 1% oleic acid, 4% hexamethylenetetramine, 1% Lan-826 multi-purpose corrosion inhibitor, and the balance is water.

[0027] In step S3, the current during the zirconium arc target bombardment for underlaying is 85 A, and the bombardment time is 180 s.

[0028] In step S4, the zirconium arc target current is 85 A and the time is 30 min; the titanium arc target current is 85 A and the time is 30 min.

[0029] In step S5, the chromium arc target current is 75 A, and the chromium arc target and the titanium arc target are deposited equivalently for 600 s.

[0030] Example 2

[0031] A method for vacuum coating a kitchen sink is obtained through the following steps:

[0032] S1. Take the sink for ultrasonic degreasing and degreasing, dry it after cleaning, and set aside;

[0033] S2. Transfer the sink processed in step S1 into a vacuum furnace, evacuate to 1 Pa, heat to 170 °C, close the throttle valve of the vacuum furnace, introduce 850 SCCM of argon gas, turn on the bias voltage and set it to 560 V, keep the duty cycle at 56%, and then perform ion glow activation for 370 s, and set aside;

[0034] S3. After completing the activation, turn off the argon gas, open the throttle valve to adjust the vacuum degree to 1 Pa, close the throttle valve, introduce 225 SCCM of argon gas to make the vacuum degree reach 1.0 Pa, reset the bias voltage to 475 V again, keep the duty cycle at 55%, turn on the zirconium arc target for bombardment underlaying, after completion, turn off the argon gas, open the throttle valve, adjust the vacuum degree to 1 Pa, close the throttle valve, and set aside;

[0035] S4. Re-introduce 325 SCCM of argon gas and 95 SCCM of nitrogen gas into the system in step S3 to make the vacuum degree reach 0.5 Pa, set the bias voltage to 78 V, the duty cycle to 68%, turn on the zirconium arc target and the titanium arc target, keep the zirconium arc target and the titanium arc target equivalent, deposit to form a zirconium titanium alloy layer, and set aside;

[0036] After completing step S4, turn off the zirconium arc target, turn on the chromium arc target, open the acetylene flowmeter and introduce 50 SCCM of acetylene gas, keep the chromium arc target and the titanium arc target equal, deposit the titanium chromium alloy layer, and complete the film coating.

[0037] In step S1, a degreasing agent is used for degreasing and de-esterification. The degreasing agent is composed of the following components by weight percentage: 6% sodium hydroxide, 9% fatty alcohol polyoxyethylene ether, 7% nonylphenol polyoxyethylene ether, 2% oleic acid, 5% hexamethylenetetramine, 2% Lan-826 multi-purpose corrosion inhibitor, and the balance is water.

[0038] In step S3, the current during the zirconium arc target bombardment for underlaying is 88 A, and the bombardment time is 225 s.

[0039] In step S4, the zirconium arc target current is 88 A and the time is 33 min; the titanium arc target current is 88 A and the time is 33 min.

[0040] In step S5, the chromium arc target current is 78 A, and the chromium arc target and the titanium arc target deposit equally for 670 s.

[0041] Example 3

[0042] A method for vacuum coating of a kitchen sink is prepared by the following steps:

[0043] S1. Take the sink for ultrasonic degreasing and de-esterification, dry it after cleaning, and set aside for later use;

[0044] S2. Transfer the sink processed in step S1 into a vacuum furnace, evacuate to 1.5 Pa, heat to 180 °C, close the throttle valve of the vacuum furnace, introduce 900 SCCM of argon gas, set the bias voltage to 650 V, keep the duty cycle at 620%, and then perform ion glow activation for 450 s, and set aside for later use;

[0045] S3. After completing the activation, turn off the argon gas, open the throttle valve to adjust the vacuum degree to 1.5 Pa, close the throttle valve, introduce 210 SCCM of argon gas to make the vacuum degree reach 1.5 Pa, reset the bias voltage to 500 V, keep the duty cycle at 60%, turn on the zirconium arc target for bombardment for underlaying, after completion, turn off the argon gas, open the throttle valve, adjust the vacuum degree to 1.5 Pa, close the throttle valve, and set aside for later use;

[0046] S4. Re-introduce 350 SCCM of argon gas and 100 SCCM of nitrogen gas into the system in step S3 to make the vacuum degree reach 0.70 Pa, set the bias voltage to 80 V, the duty cycle to 70%, turn on the zirconium arc target and the titanium arc target, keep the zirconium arc target and the titanium arc target equal, deposit to form a zirconium titanium alloy layer, and set aside for later use;

[0047] After completing step S4, turn off the zirconium arc target, turn on the chromium arc target, open the acetylene flowmeter to introduce 50 SCCM of acetylene gas, keep the chromium arc target and the titanium arc target equal, deposit the titanium chromium alloy layer, and complete the coating.

[0048] In step S1, a degreasing agent is used for degreasing and de-esterifying. The degreasing agent is composed of the following components by weight percentage: 7% sodium hydroxide, 10% fatty alcohol polyoxyethylene ether, 8% nonylphenol polyoxyethylene ether, 3% oleic acid, 6% hexamethylenetetramine, 3% Lan-826 multi-purpose corrosion inhibitor, and the balance is water.

[0049] In step S3, the current during the zirconium arc target bombardment for underlaying is 90 A, and the bombardment time is 270 s.

[0050] In step S4, the zirconium arc target current is 90 A and the time is 35 min; the titanium arc target current is 90 A and the time is 35 min.

[0051] In step S5, the chromium arc target current is 80 A, and the chromium arc target and the titanium arc target are deposited equally for 750 s.

[0052] Example 4

[0053] A method for vacuum coating a kitchen sink is prepared by the following steps:

[0054] S1. Take the sink for ultrasonic degreasing and de-esterifying, dry it after cleaning, and set aside for later use.

[0055] S2. Transfer the sink processed in step S1 into a vacuum furnace, evacuate to 2 Pa, heat to 190 °C, close the throttle valve of the vacuum furnace, introduce 950 SCCM of argon gas, set the bias voltage to 720 V, keep the duty cycle at 68%, and then perform ion glow activation for 520 s, and set aside for later use.

[0056] S3. After completing the activation, turn off the argon gas, open the throttle valve to adjust the vacuum degree to 2 Pa, close the throttle valve, introduce 275 SCCM of argon gas to make the vacuum degree reach 1.8 Pa, reset the bias voltage to 525 V, keep the duty cycle at 65%, turn on the zirconium arc target for bombardment underlaying, after completion, turn off the argon gas, open the throttle valve, adjust the vacuum degree to 2 Pa, close the throttle valve, and set aside for later use.

[0057] S4. Re-introduce 375 SCCM of argon gas and 105 SCCM of nitrogen gas into the system in step S3 to make the vacuum degree reach 0.8 Pa, set the bias voltage to 83 V, the duty cycle to 73%, turn on the zirconium arc target and the titanium arc target, keep the zirconium arc target and the titanium arc target equal, deposit to form a zirconium titanium alloy layer, and set aside for later use.

[0058] After completing step S4, turn off the zirconium arc target, turn on the chromium arc target, open the acetylene flowmeter to introduce 50 SCCM of acetylene gas, keep the chromium arc target and the titanium arc target equal, deposit the titanium chromium alloy layer, and complete the film coating.

[0059] In step S1, degreasing and degreasing are carried out using a degreasing agent. The degreasing agent is made of the following components by weight percentage: 8% sodium hydroxide, 11% fatty alcohol polyoxyethylene ether, 9% nonylphenol polyoxyethylene ether, 4% oleic acid, 7% hexamethylenetetramine, 4% Lan-826 multi-purpose corrosion inhibitor, and the balance is water.

[0060] In step S3, the current during the zirconium arc target bombardment for underlaying is 93 A, and the bombardment time is 3150 s.

[0061] In step S4, the zirconium arc target current is 93 A and the time is 38 min; the titanium arc target current is 93 A and the time is 38 min.

[0062] In step S5, the chromium arc target current is 83 A, and the chromium arc target and the titanium arc target are deposited equally for 830 s.

[0063] Example 5

[0064] A method for vacuum coating of a kitchen sink is obtained through the following steps:

[0065] S1. Take the sink for ultrasonic degreasing and degreasing, dry it after cleaning, and set aside for later use;

[0066] S2. Transfer the sink processed in step S1 into a vacuum furnace, evacuate to 3 Pa, heat to 200 °C, close the throttle valve of the vacuum furnace, introduce 1000 SCCM of argon gas, set the bias voltage to 800 V, keep the duty cycle at 75%, and then perform ion glow activation for 600 s, and set aside for later use;

[0067] S3. After completing the activation, turn off the argon gas, open the throttle valve to adjust the vacuum degree to 3 Pa, close the throttle valve, introduce 300 SCCM of argon gas to make the vacuum degree reach 2.0 Pa, reset the bias voltage to 550 V, keep the duty cycle at 70%, turn on the zirconium arc target for bombardment underlaying, after completion, turn off the argon gas, open the throttle valve, adjust the vacuum degree to 3 Pa, close the throttle valve, and set aside for later use;

[0068] S4. Re-introduce 400 SCCM of argon gas and 110 SCCM of nitrogen gas into the system in step S3 to make the vacuum degree reach 1.0 Pa, set the bias voltage to 85 V, the duty cycle to 75%, turn on the zirconium arc target and the titanium arc target, keep the zirconium arc target and the titanium arc target equal, deposit to form a zirconium titanium alloy layer, and set aside for later use;

[0069] After completing step S4, turn off the zirconium arc target, turn on the chromium arc target, open the acetylene flowmeter to introduce 50 SCCM of acetylene gas, keep the chromium arc target and the titanium arc target equivalent, deposit the titanium chromium alloy layer, and complete the film coating.

[0070] In step S1, a degreasing agent is used for degreasing and de-esterification. The degreasing agent is made of the following components by weight percentage: 10% sodium hydroxide, 12% fatty alcohol polyoxyethylene ether, 10% nonylphenol polyoxyethylene ether, 5% oleic acid, 8% hexamethylenetetramine, 4% Lan-826 multi-purpose corrosion inhibitor, and the balance is water.

[0071] In step S3, the current during the zirconium arc target bombardment for underlaying is 95 A, and the bombardment time is 360 s.

[0072] In step S4, the zirconium arc target current is 95 A and the time is 40 min; the titanium arc target current is 95 A and the time is 40 min.

[0073] In step S5, the chromium arc target current is 85 A, and the chromium arc target and the titanium arc target are deposited equivalently for 900 s.

[0074] Perform performance tests on the film coating layers prepared in Examples 1-5. The test results are shown in Table 1 below:

[0075] Adhesion: Tested according to the national standard GB / T 9286;

[0076] Glossiness: Tested according to the national standard GB / T 9754;

[0077] The metallic texture is judged by observation. The effects of observing the metallic texture are evenly divided into 1-10 grades. The higher the grade, the better the effect. Grade 1 means no metallic texture, and grade 10 is the highest grade.

[0078] Table 1

[0079] Project Metallic texture (grade) Adhesion (grade) Glossiness (°) Example 1 9 1 88 Example 2 9 2 86 Example 3 9 1 90 Example 4 9 2 91 Example 5 10 1 89

[0080] As can be seen from Examples 1-5 in the above table, the film coating layers obtained in the present invention have strong adhesion, good metallic texture and glossiness, can decorate stainless steel well, and have broad market prospects and application values.

[0081] The above embodiments are the preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present invention is within the protection scope of the present invention.

Claims

1. A method for vacuum coating a kitchen sink, characterized in that: It is prepared through the following steps: S1. Take the water tank, perform ultrasonic degreasing and de-esterification, dry it after cleaning, and set it aside for later use. S2. Transfer the water tank processed in step S1 into a vacuum furnace, evacuate to 8.0E-3 Pa, heat to 150 - 200 °C, close the throttle valve of the vacuum furnace, introduce argon gas, turn on the bias voltage, keep the duty cycle at 50 - 75%, and then perform ion glow activation, and set it aside for later use. S3. After the activation is completed, close the argon gas, open the throttle valve to adjust the vacuum degree to 6.0E-3 Pa, close the throttle valve, introduce argon gas to make the vacuum degree reach 1.0E-2.0 Pa, set the bias voltage again, keep the duty cycle at 50 - 70%, turn on the zirconium arc target for bombarding the base, after completion, close the argon gas, open the throttle valve, adjust the vacuum degree to 5.0E-3 Pa, close the throttle valve, and set it aside for later use. S4. Re-introduce argon gas and nitrogen gas into the system in step S3 to make the vacuum degree reach 1.5E-1.0 Pa, set the bias voltage and duty cycle, turn on the zirconium arc target and titanium arc target, keep the zirconium arc target and titanium arc target equivalent, and deposit to form a zirconium-titanium alloy layer, and set it aside for later use. S5. After step S4 is completed, close the zirconium arc target, turn on the chromium arc target, open the acetylene flowmeter to introduce acetylene gas, keep the chromium arc target and titanium arc target equivalent, deposit a titanium-chromium alloy layer, and complete the coating. In step S1, a degreasing agent is used for degreasing and de-esterification. The degreasing agent is composed of the following components by weight percentage: 5 - 10% sodium hydroxide, 8 - 12% fatty alcohol polyoxyethylene ether, 6 - 10% nonylphenol polyoxyethylene ether, 1 - 5% oleic acid, 4 - 8% hexamethylenetetramine, 1 - 4% Lan-826 multi-purpose corrosion inhibitor, and the balance is water. In step S2, introduce 800 - 1000 SCCM of argon gas, turn on the bias voltage and set it to 500 - 800 V, and the ion glow activation time is 300 - 600 s. In step S3, introduce 200 - 300 SCCM of argon gas, set the bias voltage to 450 - 550 V, the current during the zirconium arc target bombarding the base is 85 - 95 A, and the bombarding time is 180 - 360 s. In step S4, introduce 300 - 400 SCCM of argon gas and introduce 90 - 110 SCCM of nitrogen gas. In step S4, set the bias voltage to 75 - 85 V and the duty cycle to 65 - 75%. In step S4, the current of the zirconium arc target is 85 - 95 A and the time is 30 - 40 min; the current of the titanium arc target is 85 - 95 A and the time is 30 - 40 min. In step S5, introduce 50 SCCM of acetylene gas, the current of the chromium arc target is 75 - 85 A, and the chromium arc target and titanium arc target deposit equivalently for 600 - 900 s.