2023/04/26

Select spring material based on the temperature difference

Spring materials working under high-temperature conditions require good thermal stability, relaxation or creep resistance, oxidation resistance, and resistance to corrosion by certain media. As the operating temperature of the spring increases, the elastic modulus of the spring material decreases, leading to a decrease in stiffness and load-carrying capacity. Therefore, for springs operating under high-temperature conditions, it is necessary to understand the change rate (value) of the elastic modulus and calculate the interference of the reduced spring load-carrying capacity on the performance. According to regulations, when the operating temperature of a helical spring is above 60℃, the shear modulus should be corrected. The formula is: Gt=KtG where G is the elastic modulus at room temperature; Gt is the shear modulus at operating temperature t; Kt is the temperature correction coefficient, selected according to Table 2-98.

2023/04/26

Points to note when using Zhuji springs

When using springs from Zhuji, there are some precautions. Each spring has different specifications and must not be replaced. The design and production of these springs adhere to very strict size requirements, and the relevant usage values have been precisely analyzed. Mixing them will affect the spring's performance. Not only should they not be mixed, but they also cannot be arbitrarily modified.

2023/04/26

Analysis of the causes of uncontrolled spring mechanical production

Various different spring mechanical devices can produce different springs. During use, mechanical runaway occasionally occurs. When such situations arise, analysis should be approached from the following aspects. I: Power Supply Issues Check whether the power supply has been interrupted, and whether there are any short circuits or connection interruptions in the connected circuits.

2023/04/26

The difference between hot forming and cold forming of Zhuji springs

Zhuji springs use various carbon steel elements and alloy materials. After being manufactured and bent by CNC machine tools, they form various springs of different shapes. According to the forming method, they can be divided into two major categories: spring hot forming technology and cold forming technology. I: Spring Cold Forming The cold forming process needs to be completed automatically at one time. The eccentric cold forming process has certain limitations in use. The so-called cold forming means that when the spring is made, it is usually at room temperature, even if it is heated, the heating temperature is very limited, controlled within 60 degrees.

2023/04/26

How to prevent metal fatigue in Zhuji springs

Zhuji springs are mainly made of various alloy materials. During the production and use of alloy materials, metal fatigue is inevitable. When the spring metal is fatigued, it will affect the tensile force and use of the spring. From the perspective of production and use, metal fatigue is unavoidable.

2023/04/26

Quality Inspection Method for Zhuji Spring Phosphating

To extend the service life of springs, Zhuji spring manufacturers will perform phosphating treatment on the surface of the finished metal springs. The quality of the surface phosphating treatment affects the product quality. How can purchasing users conduct quality inspection? 1. Immersion Method Place the phosphated springs into a 3% sodium chloride solution, set the liquid temperature to 15-25℃, soak for 2 hours, and then observe. If there is no obvious sign of rust, the surface treatment process of the product is relatively good.

2023/04/26

The distribution of Zhuji springs

Zhejiang springs are an important component of Zhejiang's manufacturing industry. Spring products are ubiquitous in life, and their common applications can be broadly categorized as follows. 1: Automotive Manufacturing Many parts of automotive manufacturing require the use of springs, and these springs require high precision, such as in speed reducers, tuning valves, accelerator pedals, pressure relief valves, etc. Springs are heavily used in automotive manufacturing, and their consumption is also high in later automotive maintenance.

2023/04/26

Types and classifications of spring surface treatments in Zhuji

After the production of Zhuji spring products with various sizes and models, surface treatment is necessary. This is the final step, directly impacting the spring's performance and lifespan. Generally, the surface treatment of springs can be categorized in several ways.

2023/04/26

The correct cleaning method for Zhuji springs

Zhejiang springs have a good reputation in the spring manufacturing industry, so they have good sales. Whether in the process of using small springs or after manufacturing, they need to be cleaned. Compared with large springs, small springs are more difficult to clean and are more likely to be scratched or worn. When cleaning small springs, do not use detergents containing bleach or abrasives, steel wool, or hard scrubbing materials. To remove the detergent, rinse the surface of the spring with clean water.

2023/04/26

Classification and Precautions for Surface Treatment of Zhuji Springs

Zhuxi is a major production area for springs, and Zhuxi springs have a certain reputation in the industry. Zhuxi springs are classified into several categories according to their surface treatment. Spring surfaces can be treated with phosphating, a process that uses chemical and electrochemical reactions to form phosphates. Phosphates can form a phosphating layer on the surface, which can protect the surface of the spring and provide corrosion protection. Springs can also use bluing technology. In a concentrated sodium hydroxide solution containing sodium nitrite, heating under pressure will form an iron oxide layer, which can also protect the spring to a certain extent. The thickness is usually 1 mm.