Galvanized trivalent chromium passivation agent is completely free of hexavalent chromium, which meets the requirements for products exported to Europe, the United States, Japan and other places. The passivation film has good corrosion resistance and can pass the 96-hour neutral salt spray test. It is suitable for various zinc plating and alkaline zinc plating production lines for hanging or barrel plating. It is used at normal temperature. The passivation liquid can be used for a long time, as long as it is replenished according to consumption, it does not need to be replaced frequently. (Application of Huiweijia Galvanized Trivalent Chromium Passivation Agent) 1. Characteristics and Uses: 1. This passivation agent does not contain hexavalent chromium and belongs to environmental protection products. 2. When the zinc layer thickness is ≥8um, NSST resistance is ≥72 hours. 3. Access to SGS test, in line with ROHS rules. 4. Strong anti-rust performance and high temperature resistance, which make up for the defect of reduced corrosion resistance of hexavalent chromium passivation film after heating.
The comparison between trivalent chromium passivation and hexavalent chromium passivation can be summarized as follows: 1. The time of trivalent chromium passivation is longer than that of hexavalent chromium, and there are relatively more galvanized layers that are dissolved, so it is required that Thicker. 2. The trivalent chromium passivation film is dense and has no obvious cracks; and the hexavalent chromium passivation film is a cross-shaped network structure. The hexavalent chromium in the network structure has a certain self-repairing ability to the passivation film. However, the hexavalent chromium passivation film is not dense, and the hexavalent chromium content in the network structure is limited. When the hexavalent chromium is completely consumed and the self-repairing ability is lost, it is easy to cause corrosion and white embroidery. Although the trivalent chromium passivation film has no self-repairing ability, it has a dense structure. Therefore, as long as the trivalent chromium passivation film is not damaged, it has strong corrosion resistance. In order to prevent the defect of corrosion caused by the destruction of the passivation film, a closed treatment is recommended. in
Recently, many people ask Xiaobian neutral degreasing agent? What is it? In fact, the identification method is very simple. We all know that degreasing agents can be divided into acid degreasers, neutral degreasers, and alkaline degreasers according to PH value. Agent these three. Among them, acidic PH value <6 is suitable for mild and simple oil and fat cleaning, and alkaline PH value has a wide range, which can remove light and heavy oil, while neutral PH value between 6 and 8 is used to remove medium oil and fat. Although the cleaning effect is not acidic, Alkali is as good as it is, but it is safer to operate and relatively good in terms of environmental protection and corrosivity.
People often ask how to use the aluminum acid degreasing agent, and what precautions should be taken during use. The following editors share with you. Before speaking, let's first understand what the degreasing principle of the aluminum acid degreasing agent is. In simple terms, it is to use acid to corrode the oil to achieve the degreasing effect. The ingredients are mainly scientifically formulated from organic acids, inorganic acids, solvents and various emulsifiers with the ability to emulsify, cleanse, solubilize, and penetrate and decompose. (Application of Huiweijia Aluminum Acid Degreasing Agent) Through the above, we know the degreasing principle and composition of aluminum acid degreasing agent, and then start to understand its use. It can be divided into three types: immersion, spraying and wiping. Generally, immersion is commonly used. The preparation of ultrasonic-assisted cleaning is better, but there are some details in the degreasing process that need to be paid attention.
With the increasingly strict control of environmental protection in China, traditional electrical phosphating and chromium passivation treatments are mostly used in some electrical appliances and hardware industries. Both of these treatment methods have environmental pollution and endanger human health. Silane treatment is a surface treatment technology that is currently expected to replace chromate passivation. It has the characteristics of simple process, low pollution and high efficiency. Hui Weijia successfully developed a silane treatment agent on March 16, 2015. It has the low points of energy saving, environmental protection, low emissions, and low cost. The following editors share the product with you. Huiweijia silane treatment agent HWJ-Si509 is formulated with nano-ceramic organosilane as an effective main body, and can form a conversion film on the surface of metals such as steel, zinc, aluminum, and magnesium. After the workpiece is processed, a layer of superstructure is formed on the metal surface.
Trivalent chromium passivation agent is a passivation agent formulated from trivalent chromium salt, organic acid, oxidation, complexing agent, etc. It is suitable for passivation treatment of metal surfaces such as aluminum alloy, copper, magnesium, zinc alloy, etc. Valence chromium passivation agent does not contain harmful substances such as hexavalent chromium. It is a green product. The passivation film after passivation is blue-white, bright, corrosion resistance and adhesion, suitable for passivation of aluminum and its alloys. Pre-treatment or powder painting. In addition, the salt spray resistance time is long, and the neutral salt spray test can reach more than 300 hours, which can improve the corrosion resistance and coating binding force. A detailed understanding of the use of trivalent chromium passivation agent and safety precautions is very important to improve the performance of trivalent chromium passivation agent after passivation. Below, I will share the use method and safety precautions of trivalent chromium passivation agent. (Comparison before and after trivalent chromium passivator
1. Copper antioxidants are mainly used to prevent discoloration and oxidation of copper materials, protect the copper surface and any corrosion caused by copper ions, and produce an anti-oxidation film through the contact of anions with the surface of copper materials, thereby achieving the anti-oxidation effect. The copper antioxidant is uniform with the oxidation layer produced on the copper surface, and the finished bare copper material has a strong gloss appearance, which is not easy to produce pits, spots and black lines, and it has a long exposed inventory time. 2. As long as the concentration in water is maintained at about 0.03%, it can work. 3. Copper antioxidants are easily mixed with water, and the extremely short immersion time can achieve the purpose of protecting the copper surface. 4. The protective layer formed by copper antioxidants on the surface will not affect subsequent processing operations, such as solderability or brass solderability. 5, follow-up drying must be true (it must be dried)
The durability of industrial cleaning agents is related to the amount of oil and wax in the product itself. The number of cleaning products will also affect the durability of the cleaning agent. Compared with the industry, Huiweijia has a high concentration of cleaning agents and a low usage rate, which reduces your use costs.
Huiweijia Dewaxing Water continuously develops new products and develops industry-leading products. According to real-time feedback from customers, the previous monthly usage was 1000KG. At present, Huiweijia has saved at least a lot of costs after dewaxing, and the number of cleanings has also increased.
Usually, there are still problems with spraying metal surfaces? Example: The surface needs to be spray-painted, but it will always fall off for a long time. What causes this? 1. The pre-treatment was not cleaned. Among them, wax removal powder is one of the pre-treatment surface cleaning agents. The dewaxing powder used in the production process meets the following requirements: the dewaxing powder is a solid powder, and the PH value is 11-14 slightly alkaline. It is widely used for dewaxing and decontamination of various metal, plastic and sanitary products. It is suitable for immersion and spray cleaning without corrosion and discoloration. The temperature is generally controlled at about 700C, and it can also be cleaned at room temperature. Generally, it works best with ultrasonic waves. 2. Paint baking temperature is not enough, etc. may occur. The purpose of pretreatment: before spraying metal such as aluminum alloy profiles, plates, etc., the surface of the workpiece must be degreased, decontaminated and chemically treated.