How to ensure the sealing of Motor Oil Tin Cans?

1. Tank design:
Reasonable tank mouth structure: Design a suitable tank mouth shape and size. The most common ones are round tank mouths, and design a curling or flange structure on the edge of the tank mouth to better cooperate with the tank cover for sealing. The width, thickness and curvature of the curling edge and other parameters need to be accurately designed and controlled. Generally, the accuracy of the curling edge width can reach about ±0.1mm, thereby increasing the sealing contact area and improving the sealing effect.
Strengthen the strength of the tank body: By optimizing the wall thickness distribution of the tank body and adding reinforcing ribs, the overall strength and deformation resistance of the tank body are improved to prevent the deformation of the tank body due to external forces such as collision and extrusion during transportation, storage and use, thereby affecting the sealing.
2. Material selection:
High-quality tin material: Select tin material with high purity and good ductility. Tin material with high purity has less impurities, which can reduce the risk of corrosion and leakage caused by impurities. Tin material with good ductility can better maintain its shape during the tank body forming process, and is not prone to defects such as cracks, which is conducive to ensuring the sealing of the tank body.
Suitable sealing materials: Choose sealing materials with good compatibility with tin cans and engine oil for the sealing gasket of the can cover, such as rubber, silicone and other materials. These materials have good elasticity and oil resistance, and can form a reliable seal between the can cover and the can body, effectively preventing engine oil leakage.
3. Production process control:
Precise cutting and punching: Use high-precision shearing machines and punching machines to cut and punch the tin plate to ensure the dimensional accuracy of each part of the can body, and avoid the excessive fit gap between the can cover and the can body due to dimensional deviation, which affects the sealing effect. For example, the punching accuracy of the punching machine can be controlled within ±0.1mm, thereby ensuring the molding quality of the can body.
Reliable welding process: If the can body is manufactured by welding process, such as soldering or laser welding, to ensure the welding quality, there should be no defects such as pores, cracks, and cold welding at the welding point, and the weld should be uniform and firm to prevent engine oil from leaking from the welding part. Laser welding has the advantages of narrow weld, small heat-affected zone and high welding strength, which can effectively improve the sealing of the tank.
Strict surface treatment: polishing, passivation and other surface treatments are performed on the tank to improve the surface finish and corrosion resistance of the tank. The smooth surface can reduce the friction between the sealing material and make the sealing effect better. At the same time, the passivation treatment can form a protective film on the surface of the tank to prevent the tin from being oxidized and corroded, extend the service life of the tank, and thus ensure the sealing.
4. Sealing detection:
Airtight test: Use an airtight test machine to fill the tank with a certain pressure of gas, such as nitrogen or compressed air, and then monitor the pressure changes in the tank through pressure sensors and other detection equipment to check whether the tank has leaks. The pressure control accuracy of the airtight test machine is high, generally up to ±0.01MPa, and can accurately detect tiny leaks.
Vacuum test: The tank is evacuated into a vacuum state, and the tank is observed to see if there is deformation, bubble generation or pressure recovery, so as to judge the sealing of the tank. The vacuum degree of the vacuum test equipment can reach - 0.1MPa The following, and can be adjusted according to different test standards and tank requirements.
5. Packaging and transportation:
Protective packaging: Use appropriate packaging materials on the outside of Motor Oil Tin Cans for protection, such as cartons, foam plastics, etc., to prevent the tank from being hit, squeezed and vibrated during transportation and storage, and avoid deformation of the tank or damage to the sealing structure due to external forces, affecting the sealing.
Reasonable stacking and transportation: When stacking and transporting Motor Oil Tin Cans, pay attention to avoid mutual squeezing and collision between the tanks, stack and fix them in accordance with the prescribed methods and requirements to prevent damage and leakage of the tanks due to shaking and collision during transportation.