Basic Info.
Usage
Industrial, Auto, Furniture, Motorcycle, Home Appliance
Production Process
Cold Roll
Transport Package
Carton or as Required
Product Description
Introduction to the Main Functions of Shells
The ratio of load to deformation of shrapnel is called shrapnel stiffness. The bigger the stiffness is, the harder the shrapnel is. According to the mechanical properties, shrapnel can be divided into tension shrapnel, compression shrapnel, torsion shrapnel and bending shrapnel. According to the shape, shrapnel can be divided into disc shrapnel, annular shrapnel, plate shrapnel, spiral shrapnel, truncated cone scroll shrapnel and twisted rod shrapnel shrapnel. Common cylindrical spring sheets are widely used because of their simple manufacture, various types of spring sheets can be made according to the loading conditions and simple structure.
Generally speaking, shrapnel manufacturing materials should have high elastic limit, fatigue limit, impact toughness and good heat treatment performance. Commonly used are carbon shrapnel steel, alloy shrapnel steel, stainless shrapnel steel, copper alloy, nickel alloy and rubber. The manufacturing methods of shrapnel include cold-coil method and hot-coil method. The diameter of shrapnel filament is less than 8 mm by cold coiling and larger than 8 mm by hot coiling. Some shrapnels need to be treated by high pressure or shot peening after they are manufactured, which can improve the bearing capacity of shrapnel. The shrapnel is a kind of elastic element widely used in the mechanical and electronic industries. When loaded, the shrapnel can produce large elastic deformation, which transforms mechanical work or kinetic energy into deformation energy. After unloading, the deformation of the shrapnel disappears and returns to its original state, and the deformation energy is transformed into mechanical work or kinetic energy.
The main functions of shrapnel:
Control the movement of machinery, such as valve shrapnel in internal combustion engine, control shrapnel in clutch, etc.
(2) Absorbing vibration and impact energy, such as cushion shrapnel under automobile and train carriage, vibration absorber shrapnel in coupling, etc.
(3) Storage and output of energy as power, such as watches and ammunition fragments, ammunition fragments in firearms, etc.
(4) Used as force-measuring elements, such as force-measuring device, shrapnel in shrapnel scale, etc.
Manufacturing Performance Requirements and Manufacturing Technology of Springs
Spring is only an accumulator, it has the function of storing energy, but it can not release energy slowly. To achieve this function, we should rely on "spring + large transmission ratio mechanism", which is common in mechanical meters. Spring has been used for a long time. Ancient bows and crossbows are two kinds of springs in broad sense. Robert Hooke, a British scientist, should be the inventor of spring in the strict sense. Although helical compression springs had appeared and been widely used at that time, Hooke put forward the Hooke's law that the elongation of springs was proportional to the magnitude of the force applied. It was on the basis of this principle that the spring scale using helical compression springs came into being in 1776. Soon, the spring made on the basis of this principle for the use of clocks and watches was invented by Hooker himself. And the spring that conforms to Hooke's law is the spring in the true sense. The disc spring was invented by Belleville, France. It is a washer spring with a truncated conical section made of metal sheet or forged blank. After the emergence of modern industry, in addition to disc springs, new springs such as air springs, rubber springs, scroll springs, die springs, stainless steel springs, air springs and memory alloy springs have emerged.
Spring is used under impact, vibration or long-term alternating stress, so spring steel is required to have high tensile strength, elastic limit and high fatigue strength. In technology, spring steel is required to have certain hardenability, not easy decarbonization, good surface quality and other carbon spring steel, that is, high quality carbon structural steel with carbon content of WC in the range of 0.6% - 0.9%. Alloy spring steels are mainly Silicon-manganese series steels, whose carbon content is slightly lower, mainly by increasing the silicon content of Wsi to improve performance; in addition, there are alloy spring steels of hammer, tungsten and vanadium. In recent years, a new kind of steel with boron, niobium and molybdenum added to Silicon-manganese steel has been developed, which extends the service life of springs and improves the quality of springs.
performance requirement
Spring is used under impact, vibration or long-term alternating stress, so spring steel is required to have high tensile strength, elastic limit and high fatigue strength. In technology, spring steel is required to have certain hardenability, not easy decarbonization, good surface quality and other carbon spring steel, that is, high quality carbon structural steel with carbon content of WC in the range of 0.6% - 0.9%. Alloy spring steels are mainly Silicon-manganese series steels, whose carbon content is slightly lower, mainly by increasing the silicon content of Wsi to improve performance; in addition, there are alloy spring steels of hammer, tungsten and vanadium. In recent years, a new kind of steel with boron, niobium and molybdenum added to Silicon-manganese steel has been developed, which extends the service life of springs and improves the quality of springs.
Production process
Generally spring steel can be produced by electric furnace, open hearth furnace or oxygen converter, and high quality spring steel with good quality or special properties can be produced by electroslag furnace or vacuum furnace. The prescribed content range of carbon, manganese, silicon and other major elements in spring steel is relatively narrow. Chemical composition must be strictly controlled in smelting. When the silicon content is high, it is easy to form bubbles and other defects, and white spots are easily produced when the ingot is not cooled after forging and rolling. Therefore, raw materials for smelting must be dried to remove gases and inclusions as far as possible, and to avoid overheating of molten steel. Special attention should be paid to decarburization and surface quality of spring steel in rolling process. The fatigue limit of steel will be significantly reduced when the surface of steel is seriously decarburized. For high silicon spring steel such as 70Si3MnA, graphitization should be avoided. Therefore, the stop rolling temperature should not be too low (> 850 C) during hot working, and the residence time should not be too long in the temperature range (650 - 800 C) where graphitization is easy to form. The residual compressive stress on the spring surface can be produced by shot peening after the spring is made to offset part of the working stress on the surface and restrain the formation of surface cracks, which can significantly improve the fatigue limit of the spring.
Address:
No. 18 Hengsheng Road, Zhoushi Town, Kunshan, Suzhou, Jiangsu, China
Business Type:
Trading Company
Business Range:
Computer Products, Electrical & Electronics, Furniture, Health & Medicine, Industrial Equipment & Components, Instruments & Meters, Manufacturing & Processing Machinery, Tools & Hardware, Toys, Transportation
Management System Certification:
ISO 9001
Company Introduction:
Kunshan Ruilian Precision Machinery Co., Ltd. Was founded in 2012. It is a professional precision spring manufacturer integrating technology development, production, sales and service. Has passed ISO 9001 quality management system certification.
The company has advanced spring production equipment and testing equipment abroad, and employs many excellent professional technicians to provide customers with various services, such as pressure spring series, tension spring series, torsion spring series, special-shaped spring series, battery spring series, spring sheet, etc., which can be widely used for various leisure systems. Products, computers, electronic appliances, household appliances, toys, machinery, automobiles, motorcycles, bicycles and other industries to provide supporting product services.
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Since its inception, the company has been adhering to the principle of "honest quality", adhering to the quality policy of "providing customers with the best quality products", winning the recognition of many customers with preferential prices, sincere and fast service, and has developed rapidly.
