Refined High-Strength Flat Cushion - Durable Gaskets from China Suppliers & Factory for Superior Sealing Solutions
Usage of bolt flat washer
Usage
Flat gasket, also known as flat gasket or flat gasket, is a type of gasket with the shape of a flat plate, commonly used as a gasket at the connection of fasteners. Its function is to disperse the tightening force of connectors, increase the contact area, and reduce loosening or fatigue damage caused by hydrophobicity, while effectively preventing water, gas, and oil leakage. The material of flat pads is generally metal or rubber, which has the characteristics of withstanding high temperature, high pressure, and wear resistance.
Flat gaskets are usually used to connect fasteners such as impellers, pipes, elbows, flanges, etc. to ensure tightness and sealing between the connectors. When using, it is necessary to choose the appropriate material and thickness based on the pressure, temperature, and other parameters of the equipment to ensure its normal use.
When using, corresponding installation and usage requirements should be followed, and it should not be too tight or too loose to avoid mechanical damage or loosening, which may cause danger.
Surface treatment process
ProcessElectro-galvanizing, also known as cold galvanizing in the industry, is the process of using electrolysis to form a uniform, dense and well-bonded metal or alloy deposition layer on the surface of the workpiece. Compared with other metals, zinc is a relatively inexpensive and easy to coat metal, which is a low-value anti-corrosion electroplating layer, which is widely used to protect steel parts, especially against atmospheric corrosion, and for decoration. Plating technologies include channel plating (or hang plating), barrel plating (for small parts), blue plating, automatic plating, and continuous plating (for wire, strip). Electrogalvanizing is the most commonly used coating for commercial fasteners. It is cheaper and has a better appearance, and can be available in black or army green. However, its anti-corrosion performance is average, and its anti-corrosion performance is the lowest among the zinc plating (coating) layers. Generally, the neutral salt spray test of electrogalvanizing is within 72 hours, and special sealing agents are also used to make the neutral salt spray test reach more than 200 hours, but the price is expensive, which is 5-8 times that of general galvanizing. Fasteners for structural parts generally have color zinc and white zinc, such as 8.8 and other commercial-grade bolts.
Chrome plating is mainly to improve surface hardness, beautiful and rust-proof. Chromium plating has good chemical stability and does not act in alkalis, sulfides, nitric acid and most organic acids, but is soluble in hydrohalic acid (such as hydrochloric acid) and hot sulfuric acid. Because chromium does not change color, it can maintain its reflective ability for a long time when used, and is better than silver and nickel.
Nickel plating is mainly divided into wear-resistant, anti-corrosion, anti-rust, and generally thin process.
Its main function is to disperse the tightening force of connectors, increase the contact area, reduce loosening or fatigue damage caused by hydrophobicity, and effectively prevent water, gas, and oil leakage.
They are typically used to connect fasteners on equipment such as impellers, pipes, elbows, flanges, and structural joints to ensure proper sealing and connection tightness.
Fasteners must follow installation requirements and should not be tightened too tightly or too loosely to prevent mechanical damage, loosening, and potential hazards.
Electro-galvanizing is an inexpensive, easy-to-apply process offering good appearance (such as color zinc, white zinc, black, or army green) and basic anti-corrosion protection suitable for commercial-grade structural bolts.
Chrome plating improves surface hardness, provides strong rust protection, offers exceptional chemical stability against alkalis and organic acids, and maintains reflective shine over long periods.
Nickel plating provides wear resistance, anti-corrosion, and anti-rust properties, applied through a thin and durable finishing process.