Press-stretch forming refers to a forming method in which plates, thin-walled tubes, thin profiles, etc. are used as raw materials for plastic processing. Stamping and drawing involves a wide range of fields, reaching all aspects of the machinery manufacturing industry. Stamping drawing lubricant is a lubricating and cooling medium used in the process of stamping drawing processing.
Stamping and drawing processing can be divided into 25 processes, which are summarized into two categories: separation and forming. Separation is a process that separates one part of the blank from another. The factory calls it shearing, punching, and trimming. Forming is a process that changes the shape of a metal without breaking. The factory calls it bending, drawing, and various forming processes. The thickness of the cold stamping sheet is generally below 4mm, and the hot stamping process will be used only if the thickness exceeds 8mm. Different stamping and drawing oil products are selected for different processes of material stamping processing, such as different materials and thickness before processing, different deformation, oil supply methods and speeds during processing, and different rust prevention and post-processing after processing, which will affect the purchase of stamping and drawing Oil. How to choose stamping drawing oil?
1. Classification of stamping drawing oil The advantage of oil-based lubricants is that the viscosity can be adjusted, the application range is wide, and it can be used in almost all stamping processes. Appropriate additives can be added as needed to make it have good extreme pressure and rust resistance, and the price is relatively low. The disadvantage is that when high-viscosity oil is required, the degreasing and processability will be worse. The viscosity change caused by the temperature change leads to the change of the lubricating performance; during high-speed processing, the stability of the oil is deteriorated due to heat. It also pollutes the environment to a certain extent. The classification of press drawing oil is as follows. Classified according to the degree of volatility: non-volatile hairstyle, quasi-volatile hairstyle, volatile hairstyle Other classification methods: water-based oily classification, halogen-containing classification, classification according to the application industry, fluid and semi-fluid classification. 2. The selection principle of stamping drawing oil mainly includes the following reference dimensions 1. What material to process: stainless steel, carbon steel. Aluminum alloy, copper alloy, etc. 2. The thickness of the processed material: <1MM belongs to thin skin, 1-3MM medium thickness,>3MM thick plate 3. Processing strength: whether punching or stretching, whether both are at the same time 4. Is there any volatilization requirement for oil 5. Whether the oil has anti-rust requirements 6. Other requirements: oil smell, volatilization time, etc. Three, give examples to illustrate the use of stamping drawing oil in some processing industries A. Stamping and forming of automobile thick plate parts Product requirements: 1. High lubrication; 2. High anti-rust (more than 1 week); 3. Some customers require oil to match other chemicals; 4. Moderate viscosity B. Shades, rice cookers, dish washing dishes, stainless steel molding Product requirements: 1. High lubrication; 2. High anti-rust (carbon steel); 3. Easy to clean; 4. Low odor and environmental protection. C. Stamping and forming of aluminum fins for air-conditioning radiators Product requirements: 1. No cleaning (volatile oil); 2. High lubrication and low acid value; 3. Other requirements of the air conditioner industry; D. Stamping of silicon steel sheet Requirements for the product: 1. No cleaning (volatile oil); 2. Lubrication and anti-rust. E. Stamping of terminal supports for digital products Requirements for the product: 1. Anti-rust; 2. No-cleaning (volatile); 3. Lubrication. F. Stretching oil for battery shell Product requirements: 1. Anti-rust (cylindrical battery); 2. Good lubrication; 3. Easy to clean.
