Taicang Dafa Spring Industry Co., Ltd
Address: Taicang City, Suzhou Liuhe Town, East Gate Industrial Park Road, on the 3rd
Tel: +86 512-53605758
Contact: Mr. Zhang
Fax: +86 512-53600758
According to the nature of the force, the spring can be divided into tensile springs, compression springs, torsion springs and bending springs, according to the shape can be divided into disc springs, ring springs, leaf springs, coil springs, truncated cone scroll spring and torsion bar springs , According to the production process can be divided into cold coil spring and hot coil spring。 Ordinary cylindrical spring as the manufacture of simple, and can be made according to load conditions of various types, simple structure, so the most widely used。 Spring manufacturing materials in general should have a high elastic limit, fatigue limit, impact toughness and good heat treatment properties, commonly used carbon spring steel, alloy spring steel, stainless steel spring steel and copper alloy, nickel alloy and rubber Wait。 Spring manufacturing methods are cold roll and hot coil method。 Spring wire diameter of less than 8 mm general cold roll method, greater than 8 mm with the hot volume method。 Some of the springs in the finished but also for strong pressure or shot peening, can improve the spring carrying capacity。
For the spring industry, for a long time to form a low-grade ordinary spring oversupply, high-end products (high strength, high stress, heterosexual parts, special materials) in short supply passive situation。 China's spring industry has become saturated production, according to statistics of China's spring production has reached 4 billion, all kinds of spring products in 21 categories, more than 1,600 varieties, there are valve springs, suspension springs, diaphragm springs , Shock springs, hydraulic springs, pump springs, disc springs, high temperature spring, retaining spring, tension spring, torsion spring, compression spring, scroll spring and the opposite sex spring。
The development of the spring industry is relatively fast during the period of the Eighth Five-Year Plan and the Ninth Five-Year Plan. Especially in Shanghai, Tianjin, Guangzhou, Shandong, Changchun and Chongqing, other regions have different degrees of development. Better than other industries. Automobile, motorcycle, scooter, internal combustion engine, electrical, equipment, but also the development of these industries will drive the development of the spring industry.
The face of macroeconomic situation, the industry long-term accumulation of product quality is low, loose organizational structure, the development of weak contradictions to further highlight the deep mining, mainly the market, institutional and institutional issues.
Industry insight Researchers believe that with the national economy from the seller's market to the buyer's market changes, some deep-seated contradictions, especially over the years accumulated structural contradictions become increasingly prominent. The current industrial structure is unreasonable: the excess capacity of some industries, irrational product structure; irrational technical structure, low level of major industrial equipment; small and scattered enterprise organizations, the lack of competitive strength and advantages, the regional structure convergence, failed to reflect Comparative advantages and synergies.
Spring industry in the entire manufacturing sector, although a small industry, but its role is absolutely not underestimated。 The country's industrial manufacturing, automotive industry to accelerate development, and as the basis of parts, parts of the spring industry is even more need to have a development of the pre-period in order to adapt to the country's rapid development of the entire industry。 In addition, the expansion of the scale of spring products, the quality level is also the upgrading of machinery and equipment needs and the need to improve the performance of the host, therefore, the entire national industrial development, spring products play an important role in the daily necessities industry and hardware industry, Including lighters, toys, locks, door hinges, fitness equipment, mattresses, sofas, etc。, the number of the largest demand for spring, tens of billions of technical requirements is not high, the price is very low, Small spring plant around the country production, they have a unique advantage in cost, large spring plant is difficult to compete with them。 And thus from time to time the birth of new spring enterprises in the future, the market demand will be 7% per year to 10% growth rate。 China's accession to the WTO, the daily export of metal products increased significantly, with the spring demand pull, but by the international market demand, the impact of trade barriers, the international market has its uncertain side。
Like most other basic mechanisms, metal springs existed for a long time in the Bronze Age. Even the metal, wood is used as a flexible bow and arrow and the structural components of the military catapult. In the Renaissance, the precision of the clock, making precision springs for the first time become inevitable .In the eighteenth century the advent of the industrial revolution, proposed to be large, accurate, cheap spring. In view of the fact that watchmakers' springs tend to be handmade, the mass of mass produced by the springs is made of piano wire or the like. Advanced manufacturing methods make today's springs are ubiquitous. Computer control lines and sheet metal bending machines allow the machining of custom springs, which is clearly a special purpose machine.
Spring is just an accumulator, it has the function of storing energy, but can not slowly release the energy out to achieve this function should be released slowly "spring + large transmission than the body" to achieve, common in mechanical watches. Spring has long been applied very early in the morning, the ancient bow and crossbow is two broad sense of the spring. Spring inventor in the strict sense should be the British scientist Hooke (RobertHooke), although the spiral compression spring has been there and widely used, but Hooke put forward the "Hooke's law" - the spring and the amount of elongation suffered Force is proportional to the size, it is in accordance with this principle, in 1776, the use of spiral compression spring spring scale come out. Soon, according to this principle for the manufacture of watches for the use of the spring was invented by Hook himself. And in line with "Hooke's Law" is the true sense of the spring spring. Disc spring is the French Belleville invented, is the use of sheet metal or forging billet made of truncated cone-shaped section washer spring. After the emergence of modern industry, in addition to disc springs also appeared in addition to gas springs, rubber springs, scroll springs, mold springs, stainless steel springs, air springs, memory alloy springs and other new springs.
A spring is a mechanical part that uses elasticity to work. Parts made of elastic material deformation under external force, remove the force and then restore the status quo ante. Also as a "spring." Generally made of spring steel. Spring types of complex and diverse, according to shape points, there are helical springs, scroll springs, leaf springs, special-shaped springs.