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The domestic spring industry has come a long way, but there are hidden concerns in the industrial structure.

2025-02-17

Although the spring industry is a small sector within the entire manufacturing industry, its role is absolutely indispensable. The country's industrial manufacturing and automotive industries need to accelerate their development, and as one of the basic components and parts, the spring industry requires a period of advanced development to adapt to the rapid growth of the entire national industry. Additionally, the expansion of the variety and scale of spring products, as well as the improvement of quality levels, are necessary for the renewal of machinery and the enhancement of supporting mainframe performance. Therefore, spring products play an important role in the overall development of the national industry. With the continuous development of our country's automotive, tractor, internal combustion engine, motorcycle, electric bicycle, and electrical industries, the variety of springs is gradually increasing, and their quantity is constantly rising. Although the market demand is extremely high, the industrial structure of China's spring industry is quite concerning!

Steel production is almost entirely at a loss. How can steel companies survive in the era of thin profits?

2025-02-17

Recently, reporters visited Hebei Iron and Steel Group Company, observing this enterprise that has both international first-class production lines for high-end products and numerous production lines for ordinary products; it has a massive production capacity of 50 million tons while struggling with profit margins, and how it adapts and adjusts in adversity.

Protective layer of the spring

2025-02-17

There are many types of metal protective layers. In terms of springs, electroplating is generally used to obtain a metal protective layer. The electroplated protective layer not only protects against corrosion but also improves the appearance of the spring. Some electroplated metals can also enhance the working performance of the spring, such as increasing surface hardness, enhancing wear resistance, improving thermal stability, and preventing radiation corrosion. However, if the sole purpose is to protect the spring from corrosion, it is generally recommended to choose electroplated zinc and electroplated cadmium layers.

Stainless steel material and identification

2025-02-17

Steel that is resistant to corrosion from weak corrosive media such as air, steam, and water, as well as chemical corrosive media such as acids, bases, and salts. Also known as stainless acid-resistant steel. In practical applications, steel that resists weak corrosive media is often referred to as stainless steel, while steel that resists chemical media corrosion is called acid-resistant steel. Due to the differences in chemical composition, the former does not necessarily resist chemical media corrosion, while the latter generally possesses stainless properties. The corrosion resistance of stainless steel depends on the alloying elements contained in the steel. Chromium is the essential element that gives stainless steel its corrosion resistance. When the chromium content in the steel reaches about 12%, chromium reacts with the oxygen in the corrosive medium to form a very thin oxide film (self-passivation film) on the surface of the steel, which can prevent further corrosion of the steel substrate. In addition to chromium, commonly used alloying elements include nickel, molybdenum, titanium, niobium, copper, and nitrogen, to meet the requirements of various applications for the structure and performance of stainless steel. Stainless steel is usually classified according to its matrix structure into: ① Ferritic stainless steel. Contains 12% to 30% chromium. Its corrosion resistance, toughness, and weldability improve with increasing chromium content, and its resistance to chloride stress corrosion is superior to other types of stainless steel. ② Austenitic stainless steel. Contains more than 18% chromium, as well as about 8% nickel and small amounts of molybdenum, titanium, nitrogen, and other elements. It has good comprehensive performance and can resist corrosion from various media. ③ Austenitic-ferritic duplex stainless steel. Combines the advantages of both austenitic and ferritic stainless steels and has superplasticity. ④ Martensitic stainless steel. Has high strength but poor plasticity and weldability.  

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Our products include: vegetable basin spring, faucet drawing spring, straight tube spring, plastic-coated straight tube spring, constant temperature spring, compression spring, tension spring, torsion spring, special-shaped spring, etc., with more than 100000 kinds of specifications, which can be customized according to drawings or samples.

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