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Differences in the processes involved in the production of zinc alloy die cast

Filluar nga Jochen, Dhjetor 22, 2023, 04:43:22 PD

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Jochen

In the process of die casting, we use both vacuum plating and water plating as surface treatment processes for zinc alloy die castings. Our die casting production process also includes water plating. Surface treatment is typically applied to zinc alloy die casting products because zinc alloy die castings that have been treated are more aesthetically pleasing and resistant to wear. Die-castings made of zinc alloy can be electroplated using either water plating or vacuum plating, which are the two processes under consideration. The zinc alloy die-casting products are suitable for the water plating process, which primarily entails placing the products that are to be electroplated into a chemical plating solution for the purpose of electroplating.


In the case of zinc alloy die-casting products, vacuum ion plating, which is also referred to as vacuum coating, functions appropriately. On the other hand, the unit price is higher than that of water plating because of the complexity of the process, the high environmental requirements, and the equipment requirements. One of the most significant distinctions between water electroplating and vacuum plating is associated with the cost. When compared to water electroplating, the cost of vacuum plating is significantly higher. Additionally, the natural process is more complicated than the water electroplating method. To begin, let's take a moment to discuss the benefits and drawbacks associated with both options.


To begin, the adhesion of the treated zinc alloy die-casting parts will be extremely poor if UV oil is not used during the vacuum plating process. This means that the parts will not be able to pass the hundred grid test. When compared to zinc alloy die casting factory the vacuum plating process, the water plating method is superior in this specific regard. Consequently, in order to perform vacuum plating, a specialized spraying treatment must be carried out at a later time, which results in a premium cost.

The color of water electroplating is monotonous, and there are typically only a few colors, such as white chrome and black grid. On the other hand, vacuum plating requires post-processing, which allows it to produce a wide range of colors.

Hexavalent chromium, which is a material that is friendly to the environment, is used as the general coating material in water electroplating.


What kind of electroplating surface treatment process would you like to use for die-casting parts made of zinc alloy? Having gone through the analysis presented above, I am confident that you already have a general understanding of vacuum plating and water plating. Undoubtedly, this choice needs to be made in light of the structure lost wax casting and use that we intend to implement. planned out. An overview of its process flow is presented in the following manner:First, the product surface should be cleaned and static electricity should be removed. Next, spray primer, then baking primer, then vacuum coating, then spray topcoat, then baking topcoat, and finally packaging. The process of vacuum electroplating can be broken down into three categories: general vacuum electroplating, UV vacuum electroplating, and special vacuum electroplating. The processes involved in vacuum electroplating include evaporation, sputtering, gun color, and others.





Plating with water and vacuum ion plating (also known as vacuum plating). The distinction between the two processes is as follows:Electroplating with water is prevalent due to the fact that the process is less complicated and the requirements, ranging from the environment to the equipment, are not as stringent as those for vacuum ion plating. On the other hand, water plating has a limitation in that it can only plate materials that are composed of ABS and ABS containing PC. ABS material has a temperature resistance of only 80 degrees Celsius, which restricts the range of applications it can be used for. However, vacuum electroplating can reach temperatures of approximately 200 degrees Celsius, which allows it to be applied to components that are used at high temperatures. For instance, the air nozzle and the air nozzle ring are both constructed out of PC material, and it is necessary for these components to be able to withstand temperatures of up to 130 degrees Celsius. In addition, a layer of UV oil must be sprayed at the conclusion of the vacuum plating process for components that are typically required to have high temperature resistance. This is done to ensure that the surface of the product is glossy and resistant to high temperatures while also ensuring that it continues to adhere.


There are a lot of people who are unaware of the distinction between the two. The question now is, what are the benefits and drawbacks of using water plating as opposed to vacuum plating?


The treatment of the surface:Before coating, the base material (the plated parts) should typically be pre-treated, which includes removing oil and dust. This is done to ensure that the plated parts are clean and dry, as well as to prevent pitting, poor adhesion, and other defects in the base coating. When it comes to special materials, such as polyethylene (PE) materials, it is necessary to modify them in order to achieve the desired effect of coating.


During the primer construction process, either spray coating or dip coating may be utilized as a primer coating method. In addition to the quality requirements of the customer, the details should be determined by the dimensions, shape, and structure of the plated parts, as well as the user equipment and zinc alloy die casting factory other specific items. When you use the spraying method, you have the option of selecting SZ-97T coating oil; when you use the dip coating method, you have the option of selecting SZ-97, SZ-97+1, and alternative oils. The specifics ought to be determined by the material that the plated parts are made of. In the product display, you can see the range of applications for each individual product.


Primer drying: The coating oil series of paints are self-drying paints, and the drying process is done with the intention of increasing the efficiency of factory production. In general, the temperature for drying is between 60 and 70 degrees Celsius lost wax casting, and the drying time is approximately two hours. As a prerequisite for the completion of the drying process, the paint film must be completely dry beforehand.


Coating: When coating, make sure that the vacuum degree of the coating machine reaches the required level before heating the tungsten wire, and make sure that the heating time is strictly controlled. At the same time, it is important to exercise control over the quantity of metal that is used for coating. It is possible that the metal film will be unable to conceal the substrate if there is not enough. If you use an excessive amount, you will not only be wasting it, but you will also be affecting the quality of the coating and the life of the tungsten wire.



The purpose of top coating is generally as follows, according to the general consensus:This is done for two reasons: first, to enhance the water resistance, corrosion resistance, and wear resistance of plated parts; second, to make it possible to dye and color with water. Certain top oils, including 911, 911-1 matte oil, 889 transparent oil, and 910 matte oil, may be utilized in the event that the plated components do not require coloring. This is contingent upon the requirements of the customer.


The drying of the top coating:Due to the fact that the top coating is typically thinner than the base layer, the drying temperature is typically lower, ranging from approximately 50 to 60 degrees. It is possible to exercise a degree of flexibility in controlling the baking time in accordance with the actual requirements of the customer, and ultimately, the top layer must be completely dry.


Water dyeing: If the plated parts need to be water dyed, you can put them into the dyeing vat after the topcoat has dried, dye them with the desired color, and then rinse them and dry them in the sun. This is the process that is known as water dyeing. When dying, it is important to pay attention to controlling the temperature of the water, which is typically between 60 and 80 degrees, as well as the amount of time that the water is dyed. The fact that water dyeing is less expensive than other methods is due to the fact that it fades more quickly.