Spring history
Like most other basic mechanisms, metal springs have long existed in the Bronze Age. Even metal, wood is used as a structural element for flexible bow and military catapults. For the first time in the Renaissance, precise timepieces made the precision springs inevitable. The fourteenth century saw the development of a precise clock for revolutionary astronomical navigation. World exploration and conquest of the European colonial powers continue to provide power to watchmaker "Science and art.Another area of ??firearms to promote spring development.Established in the eighteenth century industrial revolution, to be large, accurate and cheap spring. In view of the watchmaker's spring is often hand-made, the spring mass-produced material for the piano wire or similar materials. Advanced manufacturing methods, so that the spring is ubiquitous. Computer control line and sheet metal bending machine allows custom spring Obviously, this is a special machine. The spring is just an accumulator, it has the function of storing energy, but can not release the energy slowly.
　　Release, to achieve this function should be slowly released by "spring + large transmission ratio" to achieve, common in mechanical watches. The springs were applied long ago, and the ancient bow and crossbow are two generalized springs. The inventor of the spring should, in the strict sense, be the British scientist Robert Hooke, and although at that time helical compression springs had come into existence and been widely used, Hooke put forward "Hook's Law," the amount of spring elongation The size of the force is proportional, it is based on this principle, 1776, the use of spiral spring compression springs come out. Soon, according to this principle produced specifically for the use of the clock spring Hook himself invented. And in line with "Hooke's law" is the real spring spring. Disc spring is invented by the French Belleville, is the use of sheet metal or forged blanks from the frustoconical cross-section washer-style spring. In the modern industry appeared, in addition to the disc springs also appeared gas springs, rubber springs, scrolls, mold springs, stainless steel springs, air springs, memory alloy springs and other new springs.
Industry pattern
　　For the spring industry, for a long time has formed a low-grade ordinary spring oversupply, high-end products (high strength, high stress, the other parts, special materials) in short supply of passive situation. China's spring production has become saturated, according to expert statistics, China's spring annual production reached 4 billion, all kinds of spring products a total of 21 categories, more than 1600 varieties, the main valve spring, suspension spring, diaphragm spring , Shock absorption spring, hydraulic spring, oil pump spring, disc spring, high temperature spring, circlip, tension spring, torsion spring, compression spring, spiral spring and other spring. The development of the spring industry is relatively fast during the "Eighth Five-Year Plan" and "Ninth Five-Year Plan" period, especially in Shanghai, Tianjin, Guangzhou, Shandong, Changchun and Chongqing, and in other areas with varying degrees of development in general Better than other industries. Automobiles, motorcycles, mopeds, internal combustion engines, electric appliances, instruments, etc. should also develop. The development of these industries will drive the development of the spring industry. Faced with the macroeconomic situation, the long-term accumulation of the industry has led to the contradictions of low product quality, loosely organized and weak development capability. From the perspective of deep excavation, mainly in the fields of market, system and mechanism, the industry researcher believes that as the nationals The transformation of the economy from a seller's market to a buyer's market has brought some deep-rooted contradictions, especially the structural contradictions that have accumulated over the years. The current unreasonable industrial structure is characterized by excess production capacity in some industries, unreasonable product structure, unreasonable technical structure and low level of major industrial equipment; small and scattered scale of enterprises, lack of competitive strength and advantages, convergence of regional structures and failure to reflect Comparative advantage and collaborative benefits.
development of
　　Although the spring industry in the entire manufacturing industry is a small industry, its role is absolutely not to be underestimated. In the country's industrial manufacturing and automobile industries, the development of the automobile industry should be accelerated. As one of the basic components and parts, the spring industry needs to have a more advanced phase of development in order to adapt to the rapid development of the entire country. In addition, the expansion of spring product size and quality level is also the need of upgrading of machinery and equipment and the improvement of host performance. Therefore, the development of national industry and spring products play an important role. Commodities and hardware industry, including lighters, toys, locks, door hinges, exercise machines, mattresses, sofas, etc., in terms of quantity, the largest demand for the spring, tens of billions, technical requirements are not high, the price is very high Low, generally produced by small spring plants scattered throughout the country, have unique advantages in cost and are difficult for large spring plants to compete with. So from time to time and lead to the birth of a new spring business, in the future, market demand will be 7% to 10% annual growth rate. After China's accession to the WTO, the export of household hardware products increased significantly and the demand for springs was driven. However, due to the impact of the demand in the international market and trade barriers, the international market has its own uncertainties.