Bolt anti loosening is by eliminating (or limiting) the relative movement between the thread pair, or increasing the difficulty of relative movement, to prevent the connection loose, to ensure the safety and reliability of the connection. There are various measures to prevent looseness. The followin

Without surface treatment: At present, among stainless steel fasteners, according to our experience, taking 304 products as an example, without any surface treatment, the general salt spray test time for stainless steel screws is 48 hours, and the nut is 96 hours. However, affected by the rough surf

Adaptability in high temperature environment: According to the GB/T3098.6-2014 standard, stainless steel 304 and 316 products do not affect the tensile strength within 100 °C, but after the temperature exceeds 100 °C, the tensile strength decreases by 5% for every 100 °C increase in temperature. Not

As we all know, the strength of austenitic stainless steel 304 and 316 fasteners is divided into 70 or 80 grades (such as A2-70, A4-70 or A2-80, A4-80), many people will ask the equivalent of carbon steel tightness What is the firmware level?According to the requirements of the Circumvention 098.1-2

Because stainless steel and carbon steel are essentially different, stainless steel has better extensibility, improper use of simple lead to screw can not smoothly enter, the binding force is not strong. Precautions for the use of stainless steel drilling screws are as follows: Before using, confirm

In this section, a bolt axial force detection system based on ultrasonic surface waves is established. The transmitted signal energy of the surface waves can be used to detect the bolt axial force, and the attenuation of the bolt axial force can be monitored online by using the surface wave energy d