ã€China Aluminum Industry Network】 is usually first processed into cast products, forged products, and foils, plates, strips, tubes, rods, profiles, etc., and then processed through processes such as cold bending, sawing, drilling, assembling, and coloring. to make.
The chemical properties of aluminum are relatively lively, and chemical reactions with acids and bases occur easily, resulting in corrosion, rust, blackening, and mildew. Aluminum materials are widely used in automobile engines, transmissions, aerospace equipment and other mechanical equipment industries. As a result, there is an increasing demand for special stamping oils for aluminum stamping processing. Stamping oil products provide the speed and large feed ratio for aluminum processing. The required good lubrication and cooling can extend the service life of the tool.
In view of the above, the selection of aluminum and its alloy stamping oil is very important, must ensure good lubricity, cooling, filtration and rust resistance, so it can be used for aluminum and its alloy processing stamping oil and ordinary stamping oil Differently, it is very necessary to choose a suitable stamping oil.
The choice of aluminum stamping oil stamping stretch oil is a metal processing oil, suitable for ultra-high tensile drawing, drawing stamping stamping and punching, broaching and so on. Stamping stretch oil is divided into: water-soluble stamping stretch oil, metal stamping stretch oil, aluminum stamping deep drawing oil.
1. Lubricity of stamping and drawing oil: This is the more important performance of drawing oil, and the lubrication is not good. It will cause the workpiece to crack, the plate and the metal to produce sintering, the product will appear scratch, the mold wear will be serious, and the life of the mold will be reduced.
2, the cooling of the stamping stretch oil: There are many reasons for the heat generated by the stamping process. The frictional heat between the mold and the material and the plastic deformation heat of the material are expressed in the form of processing heat. In particular, when machining complex-shaped parts or materials with high resistance to plastic deformation, the amount of heat generated is greater. When such processing is continued for a long time, heat is not accumulated in the mold unless the heat is not removed or suppressed. As the temperature continues to rise and the mold expands further, the gap between the punch and die decreases, friction and stress on the material increase, localized high temperatures occur, and the lubricating film breaks, causing sinter and strain. Broken and other faults. In this case, by using water-soluble stamping oils, heat generation can be suppressed, especially in the fields of high-speed continuous motion machining and high-speed continuous automatic processing, deep drawing of stainless steel, or high-speed processing of cans, etc. Water-capacity stamping oil.
3, stamping oil rust resistance: stamping parts after processing, generally remain intact for a long time, in order to make it during the placement does not rust, requiring the drawing oil has a good rust resistance. Because the lubricating oil for press working has strong adsorption properties, it maintains a hard-to-destroy oil film on the metal surface, so it generally has a rust-proof effect. However, the size of the effect is different depending on the nature of the lubricant and the processing conditions, and also varies depending on the environment in which the part is placed. Therefore, when the environment is harsh and the storage time is long, the antirust property of the oil is required to be higher.
4. Oil welding with stamping and drawing oil: In order to simplify the process and improve the production efficiency, it is required that the drawing oil has the property of not having to be cleaned and can be welded with oil. Sometimes, due to the adhesion of the drawing oil, it rusts in the welding area. Some oils produce harmful gases during welding and affect the weld strength. The above problems do not occur during oil welding after stamping, which is very important for drawing oil.
5. Degreasing of stamped and drawn oil (easy to clean): When oil is attached to stampings, it can be washed by using detergents and washing methods that can be washed. The washing cost is low and it takes a very short time. Degreasing is one of the important features. The stampings are not clean and will affect the painting and plating of the subsequent process.
6. Operational properties of stamping and drawing oil: Before stamping, the operation of painting the drawing oil on the processing plate requires time and labor, which is detrimental to the production efficiency. Therefore, this operation is easy to carry out and becomes a requirement for the drawing oil. One nature. Especially for large-size parts, this property is particularly important, if the operability point of view, should use low-viscosity drawing oil.
For the stamping and forming process, a large amount of heat is generated in the stamping process, and the heat can deform the workpiece and seriously affect the accuracy of the workpiece. Therefore, when selecting the stamping oil, it is necessary to consider not only the lubrication and cooling performance, but also the extreme pressure anti-wear of the stamping oil. If the selected cutting extreme pressure anti-wear performance is too low, the material may cause poor molding results. Therefore, for the fine stamping molding or ultra-precision stamping molding process, select the stamping oil with good anti-wear performance.
In addition to the lubricating properties and cooling properties of the stamping oil, the stamping oil should also be considered in terms of rust resistance, cost, and ease of maintenance. Stamping oil is easy to use the base oil with relatively low viscosity to add anti-friction additives, which can not only achieve lubrication and friction reduction, but also have good cooling and easy to be considered. However, the problem of stamping oil is that it has a low flash point, high temperature during stamping, easy deformation, high risk factor, quick volatilization, and a corresponding increase in user's operating cost. Therefore, pressure resistance and wear resistance should be used as far as conditions permit. High stamping oil.
Use and maintenance of aluminum stamping oil (1) Aluminum stamping oil should be stored in a cool dry place and keep the container closed to avoid mixing of water and impurities. The storage temperature should not exceed 60°C.
(2) In order to ensure the stamping effect, it cannot be used in combination with other greases. It is forbidden to mix with other impurities.
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