The difference between friction type and compression type connections of high strength bolts: High-strength bolt connection can be divided into two types: high-strength bolt friction connection and high-strength bolt compression connection according to different design and stress requirements when shearing force is applied. The essential difference between the two types is that the ultimate state [...]
From the point of view of raw materials, material of High Strength Bolt and Common Bolt strength is different. High strength bolts are made of high strength materials. The bolts, nuts and washers of high strength bolts are made of high strength steel, commonly used in 45 steel, 40 boron steel, 20 manganese titanium boron [...]
High Strength Bolts Bolts made of high-strength steel or requiring large preloading force can be called high-strength bolt. High-strength bolts are mostly used to connect bridges, rails, high-pressure and ultra-high-pressure equipment. The fracture of this kind of bolt is mostly brittle fracture. In order to ensure the sealing of the container, the high-strength bolt used [...]
Application of Ring Screw:Ring screw should be mainly used in port, shipbuilding, railway, construction, plastic machinery, industrial control, pipeline auxiliary equipment, marine rescue, Airport construction, aerospace, venues and other important industries as well as infrastructure engineering machinery and equipment. Cautions for using application of ring screw: 1. Users must be trained before they can use [...]
Generally, hanging ring bolts do not undergo surface treatment, but according to the requirements of use, they can be passivated by galvanizing, chromium plating and other surface treatment. Ring Bolts Surface Treatment Dehydrogenation should be carried out immediately after galvanizing. As a standard fastener, ring bolt is widely used in mechanical and electrical products. Its [...]
At present, the standard Bolts Production Material on the market mainly include carbon steel, stainless steel and copper. Carbon steel: We distinguish low carbon steel, medium carbon steel and high carbon steel as well as alloy steel with carbon content in carbon steel. stainless steel: Performance rating: 45, 50, 60, 70, 80. copper: Common materials [...]
There are two types of screw surface inspections, one is the inspection before the screw is produced, and the other is the inspection after the screw plating. Inspection method after screw treatment: Appearance quality requirements: The inspection of the appearance of the screws is carried out in terms of appearance, plating and other aspects. Inspection [...]
Annealing: The wire is heated to a suitable temperature for a certain period of time, and then slowly cooled to adjust the crystal structure, reduce the hardness, and improve the normal temperature processability of the wire. Pickling: removes the oxide film on the surface of the wire and forms a phosphate film on the metal [...]
Eyebolts Technical Requirements Eyebolts shall be made of 20 or 25 steel (GB699). The eyebolts must be integrally forged. Forgings should be normalized and the scale removed. The grain size of the finished product should not be lower than Grade 5 (GB6394), and the forgings should not have over-burning or crack defects. In order to [...]
Eye bolts are widely used in ports, electric power, steel, shipbuilding, petrochemical, mining, railway, construction, metallurgical chemical, automobile manufacturing, plastic machinery, industrial control, highway, large-scale transportation, pipeline auxiliary, slope tunnel, well treatment Protection, marine assistance, offshore engineering, airport construction, bridges, aviation, aerospace, stadiums and other important industries as well as mechanical equipment for infrastructure projects. [...]
Eye bolt, as a standard fastener, is widely used in mechanical and electrical products. Its main function is lifting load. Eye bolts generally do not undergo surface treatment, but according to the use requirements, can be passivated by galvanizing, chromium plating and other surface treatment. Dehydrogenation should be carried out immediately after galvanizing. The lifting [...]
Eye bolts are widely used in port, shipbuilding, railway, construction, plastic machinery, industrial control, pipeline auxiliary, marine rescue, Airport construction, aerospace, venues and other important industries as well as mechanical equipment of infrastructure projects. Cautions for using eye bolts: Users must be trained before they can use the product. In order to use the product [...]
Hex nuts are classified into I type, II type and thin type according to the nominal thickness. Nuts of class 8 or higher are divided into two types, type I and type II. The type I hex nut is the most widely used, and the type 1 nut is divided into three grades A, B, [...]
The nut is a fastener having an internal thread and used in conjunction with a bolt, a mechanical part having an internal thread and used in conjunction with the screw to transmit motion or power. The nut is a part that is screwed together with a bolt or a screw for fastening, and all the [...]
Hexagon nut is used in conjunction with bolts and screws to connect the fastening mechanism. Among them, Type I hex nuts are the most widely used. Class C nuts are used on machines, equipment or structures with rough surface and low precision. Class A and Class B nuts are used for machines with smooth surface [...]
T-slot bolt T-slot bolts are used where bolts can only be joined from one side of the joined part. Insert the bolt from the T-slot and turn it 90 degrees to make the bolts unable to escape. It can also be used in applications where the structure requirements are compact. Anchor bolt For the pre-buried [...]
Hexagon head reaming bolt The hinged hole bolts accurately fix the mutual position of the linked parts and can withstand shear and extrusion in the transverse direction. Cross recessed hex head bolt Easy to install and tighten, mainly used for light work and instrumentation with less load Square head bolt The square head bolt has [...]
Hex Bolts Hex bolts are one of the most widely used types of bolts. Its Class A and Class B bolts are used for important applications where high assembly accuracy is required and subjected to large shocks, vibrations or alternating loads. Its C-class bolts are used in applications where the surface is rough and the [...]
The degree of tightening of ordinary bolts is not clearly defined, and the force applied during locking is generally as long as the connection is tight. However, since the tension is not applied when the lock is applied, the nut is prone to loosening. To prevent loosening, the inner nut can be pressed by the [...]
The riveting bolts were still widely used until the 1950s, but the construction process of the riveting bolts was not only dangerous but also difficult for professional technicians. It also produced noise resistance during construction, and the construction quality was difficult to control due to the strength and clamping efficiency of the riveting bolts. In [...]