阅读说明：本技术 一种汽车标牌的拉丝工艺 (Wire drawing process for automobile label ) 是由 许自金 徐海燕 宓烨辉 于 2019-10-29 设计创作，主要内容包括：本发明涉及金属加工工艺的技术领域,公开了一种汽车标牌的拉丝工艺,包括如下步骤：S1、拉丝工序；S2、PVD表面处理工序；所述S2还包括如下步骤：步骤1、PVD前处理；通过清洗剂对汽车标牌清洗,时间15-25min；步骤2、烘烤；在真空炉温度为80-90℃下烘烤10-15min；步骤3、上挂；步骤4、镀膜；步骤5、下挂；按重量份数计,所述步骤1中的清洗剂包括如下重量份的组分：70-80份聚乙二醇辛基苯基醚；改性剂；所述改性剂包括10-15份甲基三乙氧基硅烷。本发明具有以下优点和效果：聚乙二醇辛基苯基醚可使油污从金属表面脱离；甲基三乙氧基硅烷接枝于聚乙二醇辛基苯基醚上,增加亲水基分子量,使改性的聚乙二醇辛基苯基醚更容易进入液膜,使气泡更易扩散而渗透破裂。(The invention relates to the technical field of metal processing technology, and discloses a wire drawing technology of an automobile label, which comprises the following steps: s1, a wire drawing process; s2, a PVD surface treatment process; the S2 further includes the steps of: step 1, PVD pretreatment; cleaning the automobile label by using a cleaning agent for 15-25 min; step 2, baking; baking at 80-90 deg.C for 10-15min in a vacuum furnace; step 3, hanging; step 4, coating a film; step 5, hanging down; the cleaning agent in the step 1 comprises the following components in parts by weight: 70-80 parts of polyethylene glycol octyl phenyl ether; a modifier; the modifier comprises 10-15 parts of methyltriethoxysilane. The invention has the following advantages and effects: the octyl phenyl ether polyethylene glycol can separate oil stains from the metal surface; the methyl triethoxysilane is grafted on the polyethylene glycol octyl phenyl ether, the molecular weight of the hydrophilic group is increased, so that the modified polyethylene glycol octyl phenyl ether can easily enter a liquid film, and bubbles can be easily diffused and broken by permeation.)

1. A wire drawing process of an automobile label is characterized by comprising the following steps: the method comprises the following steps:

s1, a wire drawing process;

s2, a PVD surface treatment process;

the S2 further includes the steps of:

step 1, PVD pretreatment; cleaning the automobile label by using a cleaning agent for 15-25 min;

step 2, baking; baking at 80-90 deg.C for 10-15min in a vacuum furnace;

step 3, hanging;

step 4, coating a film;

step 5, hanging down;

the cleaning agent in the step 1 comprises the following components in parts by weight:

70-80 parts of polyethylene glycol octyl phenyl ether;

a modifier;

the modifier comprises 10-15 parts of methyltriethoxysilane.

2. The process of claim 1, wherein the drawing step comprises: the modifier also comprises 5-10 parts of sodium methallyl sulfonate.

3. The process of claim 1, wherein the drawing step comprises: the modifier also comprises 2-3 parts of N-methyl-2-pyrrolidone.

4. The process of claim 1, wherein the drawing step comprises: the cleaning agent also comprises 3-4 parts of emulsifier according to parts by weight; the emulsifier is triethanolamine.

5. The process of claim 1, wherein the drawing step comprises: the cleaning agent also comprises a corrosion inhibitor in parts by weight.

6. The process of claim 6, wherein the drawing step comprises: the corrosion inhibitor comprises 2-3 parts of ammonium benzoate.

7. The process of claim 1, wherein the drawing step comprises: the cleaning agent also comprises 110 parts of 100-110 parts of deionized water by weight.

8. The process of claim 1, wherein the drawing step comprises: the drawing process of S1 comprises the following steps:

a. carrying out primary wire drawing by using a laser machine; drawing the surface of the fiber at a vacuum degree of 2.5^-1Pa, frequency of 30-40KHz, speed of 1500-1600mm/s, temperature of 50-60 deg.C, and time of 30-35 min;

b. carrying out secondary wire drawing by using a laser machine; drawing with surface lines and vacuum degree of 2.5^-1Pa, frequency of 30-40KHz, speed of 1500-1600mm/s, temperature of 50-60 deg.C, and time of 30-35 min;

c. ultrasonic treatment; the time is 3-5 min;

d. and (5) wiping the surface.

Technical Field

The invention relates to the technical field of metal processing technology, in particular to a wire drawing technology of an automobile label.

Background

The wire drawing process is a metal processing process. In metal press working, a metal is forced through a die under an external force, the cross-sectional area of the metal is compressed, and a technical working method of obtaining a desired shape and size of the cross-sectional area is called a metal drawing process.

PVD, physical vapor deposition, refers to the deposition of evaporated material and reaction products thereof on a workpiece under vacuum conditions by using low voltage, high current arc discharge technology, using gas discharge to evaporate a target material and ionize both the evaporated material and the gas, and using acceleration of an electric field. It can make some particles with special properties (high strength, wear resistance, heat radiation, corrosion resistance, etc.) spray-coated on the parent body with lower property, so that the parent body has better property. The PVD basic method comprises: vacuum evaporation, sputtering, ion plating (hollow cathode ion plating, hot cathode ion plating, arc ion plating, active reactive ion plating, radio frequency ion plating, direct current discharge ion plating).

Currently, patent publication No. CN102766875A discloses a surface treatment process of a PVD wiredrawing product, comprising the following steps: polishing: polishing the surface of the base material; electroplating nickel: electroplating nickel on the surface of the polished base material; drawing: carrying out wire drawing treatment on the surface of the electroplated base material; carrying out PVD chromium plating: placing the treated base material in a PVD vacuum furnace, and plating a chromium layer on the surface of the base material by adopting a PVD method; plating a PVD film: and continuously plating a decorative film layer on the surface of the chromium layer of the base material by adopting a PVD method.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a wire drawing process for an automobile label, which avoids the problem that the mechanical efficiency, the production process and the product performance are influenced by more foams generated by a cleaning agent in the cleaning process.

In order to achieve the purpose, the invention provides the following technical scheme:

a drawing process of an automobile label comprises the following steps:

s1, a wire drawing process;

s2, a PVD surface treatment process;

the S2 further includes the steps of:

step 1, PVD pretreatment; cleaning the automobile label by using a cleaning agent for 15-25 min;

step 2, baking; baking at 80-90 deg.C for 10-15min in a vacuum furnace;

step 3, hanging;

step 4, coating a film;

step 5, hanging down;

the cleaning agent in the step 1 comprises the following components in parts by weight:

70-80 parts of polyethylene glycol octyl phenyl ether;

a modifier;

the modifier comprises 10-15 parts of methyltriethoxysilane.

By adopting the technical scheme, the surface tension is reduced by the polyethylene glycol octyl phenyl ether, oil stains are separated from the metal surface through the actions of wetting, dispersing, solubilizing, emulsifying and the like, the wetting of the alkali liquor on the surface of the oil is improved, and the contact between reactants is accelerated; the polyethylene glycol octyl phenyl ether belongs to a nonionic surfactant, and the polyethylene glycol octyl phenyl ether cannot form a firm adsorption film to enable foams to become unstable and be easily damaged, so that the defoaming performance of the polyethylene glycol octyl phenyl ether is better than that of the ionic surfactant; methyl triethoxysilane is grafted on polyethylene glycol octyl phenyl ether, and an ethoxy chain as a hydrophilic group can increase the molecular weight of the hydrophilic group of the surfactant, so that the modified polyethylene glycol octyl phenyl ether can easily enter a liquid film, bubbles are broken, and the hydrophilic group is also favorable for dissolving stains in a cleaning agent to enhance the decontamination effect; meanwhile, the methyl triethoxysilane is grafted on a side chain of the polyethylene glycol octyl phenyl ether, and has a steric hindrance effect, so that the modified polyethylene glycol octyl phenyl ether has high dispersibility and dispersion retentivity, and bubbles are easier to diffuse and permeate and break.

The invention is further configured to: the modifier also comprises 5-10 parts of sodium methallyl sulfonate.

By adopting the technical scheme, the sodium methallyl sulfonate can provide sulfonic acid groups with strong polarity to react with the methyltriethoxysilane, so that the polarity of a reacted mixture is enhanced, the compatibility and the binding force of the polyethylene glycol octyl phenyl ether and the methyltriethoxysilane are improved, and the enhancement of the polarity of the surfactant is also beneficial to improving the decontamination effect; on the other hand, the sodium methallyl sulfonate plays a role of a chain transfer agent and can assist in realizing the modification of the polyethylene glycol octyl phenyl ether by the methyltriethoxysilane, so that the dispersibility of the modified polyethylene glycol octyl phenyl ether is improved, gas molecules are easier to diffuse, permeate and break, and a defoaming effect is realized; meanwhile, the sulfonic group is used as a hydrophilic group, the molecular weight of the hydrophilic group of the surfactant is increased, and the modified surfactant can easily enter a liquid film to break bubbles.

The invention is further configured to: the modifier also comprises 2-3 parts of N-methyl-2-pyrrolidone.

By adopting the technical scheme, the N-methyl-2-pyrrolidone can promote the reaction between the sodium methallyl sulfonate and the methyl triethoxysilane, thereby being beneficial to improving the reaction rate of the modified polyethylene glycol octyl phenyl ether.

The invention is further configured to: the cleaning agent also comprises 3-4 parts of emulsifier according to parts by weight; the emulsifier is triethanolamine.

By adopting the technical scheme, triethanolamine is used as an emulsifier, so that the modified polyethylene glycol octyl phenyl ether is quickly emulsified and dispersed into a foaming system or spread on the surface of foam, the development efficiency of the modified polyethylene glycol octyl phenyl ether is improved, the modified polyethylene glycol octyl phenyl ether is dispersed more uniformly, and the effect of inhibiting foaming is improved.

The invention is further configured to: the cleaning agent also comprises a corrosion inhibitor in parts by weight.

By adopting the technical scheme, the corrosion inhibitor can form a layer of protective film on the surface of an object while cleaning away oil stains, effectively prevent the workpiece from rusting, form good protection effect and prevent the workpiece from being corroded.

The invention is further configured to: the corrosion inhibitor comprises 2-3 parts of ammonium benzoate.

Through adopting above-mentioned technical scheme, ammonium benzoate plays the effect of protection work piece as the corrosion inhibitor, when preventing that the work piece from rustting, can produce the synergistic action with triethanolamine complex use, reduces the reagent quantity on the one hand, and is more environmental protection, and on the other hand same reagent has multiple effect, and the utilization ratio is higher.

The invention is further configured to: the cleaning agent also comprises 110 parts of 100-110 parts of deionized water by weight.

By adopting the technical scheme, deionized water and the modified polyethylene glycol octyl phenyl ether are mixed to obtain the cleaning solution, so that some water-soluble substances on the surface of the workpiece can be removed, and the workpiece can be cleaned more properly.

The invention is further configured to: the drawing process of S1 comprises the following steps:

a. carrying out primary wire drawing by using a laser machine; drawing a wire with polishing property on the surface for 30-35min at the vacuum degree of 2.5-1Pa, the frequency of 30-40KHz and the speed of 1500-1600mm/s and the temperature of 50-60 ℃;

b. carrying out secondary wire drawing by using a laser machine; drawing wires with lines on the surface, wherein the vacuum degree is 2.5-1Pa, the frequency is 30-40KHz, the speed is 1500-1600mm/s, the temperature is 50-60 ℃, and the time is 30-35 min;

c. ultrasonic treatment; the time is 3-5 min;

d. and (5) wiping the surface.

In conclusion, the invention has the following beneficial effects:

1. methyl triethoxysilane is grafted on polyethylene glycol octyl phenyl ether, an ethoxy chain as a hydrophilic group can increase the hydrophilic group molecular weight of the surfactant, and the hydrophilic group is beneficial to dissolving stains in a cleaning agent and enhancing the decontamination effect; meanwhile, the methyl triethoxysilane is grafted on the side chain of the polyethylene glycol octyl phenyl ether, so that the steric hindrance effect is achieved, and the modified polyethylene glycol octyl phenyl ether has higher dispersity and dispersion retentivity through the combined action of the increase of the molecular weight of the hydrophilic group and the steric hindrance effect, so that bubbles are easier to diffuse and permeate and break;

2. the sodium methallyl sulfonate can provide sulfonic acid groups with strong polarity, and reacts with the methyltriethoxysilane, so that the polarity of a reacted mixture is enhanced, the compatibility and the binding force of the polyethylene glycol octyl phenyl ether and the methyltriethoxysilane are improved, and the enhancement of the polarity of the surfactant is also beneficial to improving the decontamination effect; on the other hand, the sodium methallyl sulfonate plays a role of a chain transfer agent and can assist in realizing the modification of the polyethylene glycol octyl phenyl ether by the methyltriethoxysilane, so that the dispersibility of the modified polyethylene glycol octyl phenyl ether is improved, gas molecules are easier to diffuse, permeate and break, and a defoaming effect is realized; meanwhile, the sulfonic group is used as a hydrophilic group, the molecular weight of the hydrophilic group of the surfactant is increased, and the modified surfactant can easily enter a liquid film to break bubbles;

the N-methyl-2-pyrrolidone can promote the reaction between the sodium methallyl sulfonate and the methyl triethoxysilane, thereby being beneficial to improving the reaction rate of the modified polyethylene glycol octyl phenyl ether;

4. ammonium benzoate can be used with triethanolamine in a compounding way to generate a synergistic effect, so that the use amount of the reagent is reduced, the reagent is more environment-friendly, and the same reagent has multiple functions and a higher utilization rate.

Detailed Description

The present invention will be described in further detail below.