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Do you know the processing precautions of automobile stamping parts?
2022-03-22 09:05:15

Stamping and drawing oil belongs to metal processing oil, which is suitable for ultra-high strength tensile forming, pipe drawing stamping forming, punching, shearing, broaching, etc. Stamping and drawing oil is divided into water-soluble stamping and drawing oil, metal stamping and drawing oil and aluminum stamping and drawing oil.


Automobile stamping parts


1. Greasiness of stamping and drawing oil: This is a serious effect of drawing oil. The greasiness is not good, and even the workpiece will be split, the plate and metal will be sintered, the product will be scratched, the die wear is severe, and the die life will be lost.

2. Cooling property of stamping drawing oil: there are many factors of heat in stamping processing. The conflict heat between die and data and the plastic deformation heat of data are expressed by the method of processing heat. Auto parts, especially when processing parts with disordered shapes or materials with large plastic deformation resistance, will produce more heat. If this heat is not removed or suppressed after a long time, the heat will accumulate on the die, so that the die temperature will continue to rise, the die will further swell, and the space between the punch and the die will be reduced, The conflict and the stress applied to the data will increase, and some of them will suffer from high temperature and even the slick film will be split, which will then constitute faults such as sintering, strain and splitting. In this environment, the use of water-soluble stamping oil in the process can inhibit the heat attack, especially in the areas of high-speed continuous behavior processing and high-speed continuous automatic processing, deep drawing of stainless steel or high-speed processing of cans. Water-soluble stamping oil with good cooling performance is often used.

3. Rust resistance of stamping and drawing oil: the parts after stamping are usually abandoned intact for a long time. In order to prevent them from rusting during the abandonment period, I beg the drawing oil to have wonderful rust resistance. Because the greasy oil for stamping processing has strong adsorption and adheres to the oil film that is difficult to be damaged on the metal surface, it has the function of rust prevention. However, the size of its role is based on the nature of the greasy oil and the processing conditions are not abnormal but not abnormal, and others are also based on the parts abandonment environment is not abnormal but not abnormal. Therefore, it will last forever in the bad environment and storage time, and beg for higher rust resistance of the oil.

4. Oil weldability of stamping and drawing oil: in order to simplify the process and improve the production power, it is required that the drawing oil has the effect of oil welding without washing. Automobile stamping parts occasionally rust in the welding area due to the adhesion of drawing oil. Some oils produce harmful gases during welding and affect the welding strength. The above results do not occur during welding with oil after stamping, which is abnormally serious for drawing oil.

5. Degreasing of stamping drawing oil (easy washing): the drawing oil attached to the stamping parts can be washed by selecting the washing agent and method that can be washed. When washing, the washing cost is cheap, and it can be degreased in a very short time, which is also one of the serious characteristics. The unclean washing of stamping parts will affect the painting and electroplating of subsequent processes.

6. Operability of stamping and drawing oil: before stamping, the necessary time and labor for painting the drawing oil on the processed plate will damage the production power. Therefore, the brief end of this operation has also become a property of begging for drawing oil. Especially with regard to large standard parts, this property is particularly serious. If from the perspective of operability, we should choose drawing oil with low viscosity.

In the process of stamping, heat can seriously affect the forming accuracy of many workpieces. Therefore, when deciding the stamping oil, we should not only consider the greasiness and cooling effect, but also consider the extreme pressure and anti-wear effect of the stamping oil. If the cutting extreme pressure and anti-wear effect of the decision is too low, then the data may constitute the role of poor molding. Therefore, the stamping oil with good extreme pressure and anti-wear effect is selected for precision stamping forming or ultra precision stamping forming.

In terms of the resolution of stamping oil, in addition to the greasiness and cooling of stamping oil, the anti rust, cost and easy protection of stamping oil should also be considered for automotive sheet metal parts. Stamping oil is easy to choose base oil with relatively low viscosity to participate in antifriction additives, which can not only achieve greasy antifriction, but also have excellent cooling and easy to worry. However, the result of stamping oil is low flash point, high temperature during stamping forming, easy deformation, high risk coefficient, fast evaporation, and the user's use cost increases accordingly. Therefore, even if the stamping oil with high compression and wear resistance is selected under the allowable conditions.


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