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belleville spring
standard:DIN2093
material: 65Mn, 50CrV4 carbon steel
finish: black oxide
5 years expreience in exporting

Product: belleville spring

ISO9001:2008 certificate

Size	All sizes
Standard	DIN2093
Material	65Mn / 50CRV4 carbon steel
Surface treatment	black oxide
Package	standard export package
Other	customer design will be produced according to the sample or drawings

we specialize in retaining rings. disc spring ,hose clamps ,parallel key ,spring pin and so on.For good quality and after-sales, our products have exported to many countries like Germany, USA, Iran, Turkey, Poland ,Egypt etc

Q: The glass door spring is generally guaranteed for several years: but once you change the maintenance fees are higher than the artificial spring spring price itself

Q: Stainless steel and spring steel hardness, who is hard?: To sell the spring steel where seen relatively hard two pliers are very difficult to open

Q: What kind of production equipment does spring factory usually have?: Multi function forming machine, coil spring machine, 580 press spring machine, extension spring machine, etc.

Q: What's the manganese content of spring steel?: Carbon spring steelThe carbon content (mass fraction) of carbon spring steel is usually 0.62%~0.90%. In accordance with its manganese content is divided into general manganese content (mass fraction) (0.50%~0.80%), such as 65, 70, 85 and higher manganese content (mass fraction) (0.90~1.20%), such as 65Mn two categories.

Q: How to choose spring steel material?: In choosing materials, the material shall be considered in combination with the diameter or thickness of the material. The size of commonly used spring steel in oil is shown in table 3-10.7mm below diameter carbon spring steel used for oil quenching, the size of all kinds of spring is slightly larger, available manganese spring steel quenching. Well, such as 65Mn spring steel 15mm diameter can be through quenching in oil, available water quenching diameter of 25mm. For the spiral spring, leaf spring and disc spring middle section can be used manganese spring steel, 60Si2Mn steel can be used as oil quenching diameter of 25mm, for the spring to withstand heavy loads with large cross section, can choose the hardenability of high chromium silicon steel, chrome vanadium steel wire, such as 60Si2CrA.50CrVA, 45mm in diameter can also through quenching in oil.

Q: How should we choose the spring material?: Large and medium-sized spring for load precision and stress higher, should choose cold drawn or cold drawn after polishing steel, for load precision and stress lower spring products, can choose hot rolled steel.

Q: How about the size of the elasticity?: Spring elastic deformation, the elastic limit, the elastic force with the elongation of the spring (or shorten) is proportional to the length (or the length of the spring and the pulling force is proportional to F=-kx (), or delta F=-k delta x). Where k is called the coefficient of stiffness (as a coefficient of rigidity or elasticity) of a spring, in numerical terms equal to the elasticity of a spring when it is stretched (or shortened) in unit length. The unit is Newton per meter, and the symbol is N/m. The K value is related to the nature of the material. The difference between the stiffness and stiffness of springs is that they have different stiffness coefficients. Moreover, the stiffness coefficients of different springs are generally different. The expression in the sign spring caused by its elongation (or compression) in the opposite direction. The law was discovered by British scientist Hooke, known as Hooke's law.

Q: How to distinguish between spring steel and stainless steel: Mainly depends on the performance of spring steel, good elasticity, stainless steel toughness. The color should be slightly white stainless steel. Spring steel is easy to rust, with a little salt a day you can see the stainless steel does not rust.

Q: The glass door spring is broken. How much would it cost to change it?: The price of the spring itself is about 200-800, plus part of the labor cost. After all, it's very expensive. There are about 150 of the spring, but the quality is not good, or safety first. Labor costs are probably about 120. Specific prices should be based on your actual situation, you and the master speak.

Q: Physics high school. Why does a spring fall to the lowest point and the acceleration a must be greater than the acceleration of gravity g ah. Seek expert: According to the conservation of mechanical energy, the object should be a free fall motion at the upper end of the spring

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