What are the requirements for the selection of stamping oil for automotive stamping parts?

2023-05-16 16:17:49

In the stamping of automobile stamping parts, the factors that affect the yield of stamping and drawing generally include the precision of stamping equipment, the rationality of die design, the quality of stamping dies, and the performance of stamping oil. How to choose stamping oil is also a part of stamping technology. An important topic:

(1) Silicon steel plate: Silicon steel plate is a material that is relatively easy to punch. Generally, for the ease of cleaning of the finished workpiece, low-viscosity stamping oil is used on the premise of preventing punching burrs. In addition, the anti-rust performance and anti-corrosion performance of stamping oil used for processing silicon steel plates must meet certain requirements, which can avoid problems such as rusting of workpieces, protection of the operating environment, and generation of irritating gases.

(2) Carbon steel plate: When selecting stamping oil for carbon steel stamping, the first thing to pay attention to is the viscosity of the drawing oil. The optimum viscosity is determined according to the difficulty of processing, the method of oiling for stretching and the conditions of degreasing. Secondly, it is necessary to consider the oiliness that makes forming easy, the extreme pressure performance that prevents seizure, rust resistance, degreasing performance, and no toxic gas generated during welding.

(3) Galvanized steel sheet: Galvanized steel sheet is a welded steel sheet with a hot-dip galvanized or electro-galvanized layer on the surface. Because it will react chemically with chlorine-based additives, it should be noted that chlorine-type stamping oil may cause white rust when selecting stamping oil. However, the use of Yida Borun sulfur-type stamping oil can avoid rust problems, but it should be degreased as soon as possible after stamping.

(4) Copper and aluminum alloy plates: Because copper and aluminum have good ductility, when selecting stamping oil, you can choose stamping oil containing oily agents and good sliding properties, and avoid using chlorine-containing stamping oil, otherwise the stamping oil will Corrodes copper and aluminum alloys to blacken the surface.

(5) Stainless steel: Stainless steel is a material that is prone to work hardening, and requires the use of stretching oil with high oil film strength and good sintering resistance. Generally, stamping oil containing sulfur and chlorine compound additives is used to avoid problems such as burrs and cracks on the workpiece while ensuring extreme pressure processing performance.