Brief analysis of the performance requirements of drawing oil when metal is stretched

Metal drawing parts are a kind of metal products that are widely used in modern society. Stamping and drawing processing plants need to use stamping and drawing oil when drawing processing, which is divided into two types: oily and water-based. So what are the performance requirements for stamping drawing oil during processing? The following will give you a brief analysis. 1. Lubricity of stamping drawing oil: This is an important performance of drawing oil. Poor lubricity will cause the workpiece to break, the plate and metal will sinter, the product will be scratched, the mold will be severely worn, and the life of the mold will be reduced. 2. Rust resistance of stamping drawing oil: After stamping, the parts should generally be left intact for a long time. In order to prevent them from rusting during placement, the drawing oil is required to have good rust resistance. Because the lubricating oil used in press processing has strong adsorption and maintains an oil film that is difficult to break on the metal surface, it generally has an anti-rust effect. However, the size of the effect is different according to the nature of the lubricant and the processing conditions, and also according to the environment where the parts are placed. Therefore, when the environment is harsh and the storage time is long, the oil has higher requirements for rust resistance. 3. Cooling properties of stamping drawing oil: There are many reasons for the heat generated by stamping. The friction heat between the mold and the material and the heat of plastic deformation of the material are all expressed in the form of processing heat. Especially when processing parts with complex shapes or materials with high plastic deformation resistance, the heat generated is greater. When this processing is continuously performed for a long time, if this heat is not removed or suppressed, the heat will accumulate on the mold to make the mold The temperature continues to rise, the mold expands further, the gap between the punch and the female mold will decrease, the friction and the stress applied to the material will increase, and the local high temperature will cause the lubricating film to rupture, resulting in sintering, straining and Failure such as rupture. In this case, the use of water-soluble stamping oil can suppress the heat generated, especially in the fields of high-speed continuous motion processing and high-speed continuous automatic processing, as well as stainless steel deep drawing processing or high-speed processing of cans, etc., and more use of good cooling Water-soluble stamping oil. 4. The degreasing property of the stamping drawing oil (easy to clean): When the drawing oil is attached to the stamping parts, it can be cleaned by using detergents and washing methods that can be washed. The washing cost is low and it takes a short time. It can be degreased, which is also one of the important characteristics. The stamping parts are not cleaned, which will affect the painting and electroplating of the subsequent process. 5. The weldability of stamping drawing oil with oil: In order to simplify the process and improve the production efficiency, the drawing oil is required to have the performance of welding with oil without cleaning. Sometimes due to the adhesion of the drawing oil, rust in the welding place. Some oils generate harmful gases during welding and affect welding strength. The above problems do not occur when welding with oil after stamping, which is very important for drawing oil. 6. The operability of stamping drawing oil: Before stamping, the operation of applying drawing oil to the processed sheet requires time and labor, which detracts from production efficiency. Therefore, this operation is easy to carry out and becomes a requirement for drawing oil. A nature. Especially for large-size parts, this property is particularly important. From the point of view of operability, low-viscosity drawing oil should be used as much as possible. [Related recommendation] Learn more: 精の corporate culture Learn more: Continuous improvement and innovation are the key factors for the survival of stamping companies Learn more: The development of the metal stamping processing industry