Custom Sheet Metal Cutting, Stamping And Stretching Dies

I. Advantages of Oil-Free/Low-Oil Lubrication Technology

Oil-free lubrication completely eliminates the use of mineral oil lubricants, employing solid lubricants or dry film coatings; low-oil lubrication replaces traditional mineral oil with small amounts of synthetic or water-based lubricants. Its core advantages are as follows:

1. Environmental Protection and Energy Saving: Oil-free lubrication eliminates grease leakage and pollution; low-oil lubrication reduces lubricant consumption by 70%-80% compared to traditional methods, eliminating the need for additional waste oil treatment costs and meeting industrial environmental protection requirements.

2. Improved Die Life and Machining Accuracy: The lubrication layer can reduce the coefficient of friction between the die and the material to below 0.1, reducing wear on die edges and cavities, increasing die life by 20%-30%; with no grease adhesion, the stamped parts surface is free of oil stains, dimensional tolerances are controlled within ±0.01-0.03mm, and surface roughness Ra≤0.8μm.

3. Reduced Equipment Maintenance Burden: Eliminates the need for frequent mineral oil additions and replacements, reducing lubrication system blockages and leaks; production lines do not require waste oil collection devices, simplifying equipment structure and reducing maintenance workload.

II. Specific Applications of Oil-Free/Low-Oil Lubrication Technology in Precision Stamping Dies

1. Application of Solid Lubricants: Graphite, molybdenum disulfide, and polytetrafluoroethylene (PTFE) solid lubricants are selected. Before stamping, they are applied by spraying or brushing to evenly cover the die cavity, cutting edge, and guide post/sleeve surfaces. The coating thickness is controlled at 0.01-0.03mm, suitable for low-speed, high-precision stamping scenarios (such as electronic component stamping).

2. Dry Film Lubrication Technology: Utilizing specialized dry film lubricants, a dense lubrication layer with a thickness of 0.02-0.05mm is formed on the die surface through spraying and baking processes. This layer is high-temperature resistant and wear-resistant, suitable for high-speed stamping and automated production lines. It allows for continuous stamping of 1000-2000 parts without recoating, ensuring stable stamping processes and consistent product dimensions.

3. Promotion of water-based lubricants: Water-based stamping oil with an oil content of no more than 5% is selected. Water is used as the carrier, and extreme pressure agents and rust inhibitors are added. It has both lubrication and cooling functions. During stamping, it is evenly sprayed on the mold and material surface. It is suitable for precision stamping of high-strength steel and aluminum alloy. It can be directly washed with water after use, reducing subsequent cleaning costs.