Knowledge

Welding nuts are welded parts of the material (same or different), by heating or pressure or both, and with or without filling materials, so that the

The pre-tightening force of the bolt is the pre-tightening force along the axis line of the bolt generated between the bolt and the connected member u

According to the working principle of modern spectral instruments, spectrometers can be divided into two categories: classical spectrometers and new s

(1) Formulate and implement electrical equipment safety regulations, including open the furnace door electrical co-pin, furnace shell grounding, prote

1, what is the ultra-short bolt Ultra-short bolt is a very high resistance bolt, can resist acid, alkali salt corrosion. And the basic composition is

1. Light yellow (feather cloth)· Polishing A polishing method by placing it on a polishing cloth of various materials and grain sizes to make t

Fastener nut surface defects 1, cracks: quenching cracks - do not allow the existence of cracks is by grain cross-cutting or along the grain boundary,

Screws as a common fastener, carbon steel material is also a common screw material, of course, carbon steel is also divided into different carbon stee

In the process of quenching, when the huge stress generated by quenching is greater than the strength of the material itself and exceeds the plastic d

As a special type of fastener, expansion bolts are widely used in the connection and fixing of concrete structures. It is characterized by the bolt bo

The characteristics of stainless steel screws are better, with strong corrosion resistance, high temperature resistance, and strong anti-rust performa

Since almost all commercial fasteners are made of carbon steel and alloy steel, general fasteners are expected to prevent corrosion, in addition, the