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

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

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

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.