Heavy Hex Bolts
Advantage of High Strength Dacromet Bolt
The advantage of high strength Dacromet bolt is due to the development of Dacromet, which has become a necessary technical requirement in some workplaces. The main reasons are as follows: 1. Electroplating not only pollutes the air, land and water, but also does great harm to operators. The state has repeatedly declared that it is [...]
Advantages of Hot-dip Galvanized Bolt
Hot-dip galvanized bolt has many advantages, which are summarized as follows: 1. The cost of hot-dip galvanized bolts treatment is low: the cost of hot-dip galvanizing antirust is lower than that of other coatings; 2. The hot-dip galvanized bolt is durable after hot-dip galvanizing: in the suburban environment, the standard hot-dip galvanized anti-corrosion thickness can [...]
Materials of High Strength Hexagon Bolts
Which materials of High strength hexagon bolts? they are made of three kinds of materials. The details are as follows: Carbon steel: Generally, hexagonal bolt manufacturers distinguish low carbon steel, medium carbon steel, high carbon steel and alloy steel according to carbon content in carbon steel. 1. Low carbon steel C% ≤ 0.25% is usually [...]
How to Distinguish High Strength National Standard Bolt
The identification method of high strength national standard bolt mainly depends on five aspects: Look at the mark. Generally, the packing box of bolts has identification. It can be divided into 8.8, 10.9 and 12.9 grades. In general, there is no grade mark on the hexagonal plane of hexagon bolt, which is a common grade, [...]
Heat Treatment of American Hexagon Socket Bolts
There are 10 kinds of heat treatment methods for American hexagon socket bolts 1. Normalizing: the steel or steel parts are heated to the appropriate temperature above the critical point AC3 or ACM for a certain time and then cooled in air to obtain pearlite structure. 2. Annealing: the hypoeutectoid steel workpiece is heated to [...]
Requirements for Heat Treatment High Strength Fasteners
Heat treatment high strength fasteners should be quenched and tempered according to the technical requirements. The purpose of heat treatment quenching and tempering is to improve the comprehensive mechanical properties of fasteners, so as to meet the tensile strength value and yield ratio specified by the product. Heat treatment process has a crucial impact on [...]
A325M Heavy Duty Hexagon Bolt Specification
Heavy duty hexagon bolt: 1. Standard: A325M 2. Grade: 4.8 / 5.8 / 6.8 / 8.8 / 10.9 / 12.9 , grade 2 / 5 / 8 3. Specification: m6-m24, 1 / 4 inch-1 inch 4. Length: 10mm-270mm, 1 / 2 inch-10 inches 5. Surface treatment: natural color, blackening, galvanizing, hot galvanizing, Dacromet 6. Packing: [...]
Process of High Strength Blackening Bolt
As for the process of high strength blackening bolt, it is a blackening treatment process at room temperature, which can be divided into the following procedures. The first step is to clean the surface of high strength bolts. After that, the degreasing process is started. The high strength bolt must be completely immersed in the [...]
Application of High Strength Hexagon Bolt
Application of High Strength Hexagon Bolt is very widely, High strength hexagon bolts are usually used to connect thin metal plates. When connecting, the threaded bottom hole of the connected part is made first, and then the hexagonal combination screw is screwed into the threaded bottom hole of the connected part. Due to the high [...]
Dacromet Process of Dacromet Hexagon Bolts
Dacromet is an advanced and complete metal surface treatment technology of dacromet hexagon bolts. It has the advantages and characteristics that other surface treatment can't match. 1. Excellent corrosion resistance. In salt spray test, 1 μ m ~ 3 μ m thick rainbow colored film will be corroded in 10 hours and corroded in 200 [...]
How to Distinguish High Strength Bolts
In order to distinguish high strength bolts, the following three methods are mainly used: With naked eyes, high strength bolts can be divided into high-strength external hexagon bolts and high-strength inner hexagon bolts. These high strength bolts are generally marked with strength grade and hardness grade. Generally, the screw head is marked with bolt grade. [...]
Process of Stainless Steel Hexagon Bolt
The technological process of stainless steel hexagon bolt is as follows: 1. Normalizing: heat the stainless steel hexagon bolt to the appropriate temperature above the critical point AC3 or ACM, keep it for a certain time, and then cool it in the air to obtain pearlite structure. 2. Annealing: heating the hypoeutectoid stainless steel hexagon [...]
How to Identify High Strength Bolts
Identify High Strength Bolts is also skilled, generally in this industry for a long time, you will learn the skill, the following is for everyone to sort out some of the knowledge. 1. Identification: there are obvious strength grade marks on the package of bolts manufactured by regular manufacturers. Such as 8.8, 10.9 and 12.9. [...]
Construction of High Strength Bolts
The following problems should be paid attention to in the construction of high strength bolts: (1) Surface rust, oil stain, burr and weld bead on bolt hole wall shall be cleaned. (2) After treatment, the contact friction surface shall meet the requirements of anti scratch coefficient. The high-strength bolts used shall be matched with nuts [...]
Benefits of High Strength Hexagon Bolts
High strength hexagon bolts bring many benefits to various industries, such as Improve the stress condition of the structure. The force of friction type high-strength bolt connection is transmitted by the friction force on the steel plate surface. The large area of transmission force and the phenomenon of stress concentration are improved, and the fatigue [...]
Stainless Steel Hexagon Bolts Process Introduction
The manufacturing process of stainless steel hexagon bolts is as follows: Normalizing: the screw is heated to the appropriate temperature above the critical point AC3 or ACM for a certain time and then cooled in air to obtain pearlite structure. Annealing: the hypoeutectoid screw is heated to 20-40 ℃ above AC3 and cooled slowly in [...]
High Strength Wind Power Bolt
As one of the most widely used connection methods in wind power equipment, high-strength wind power bolt and nut connection has the advantages of simple construction, disassembly and replacement, good stress and fatigue resistance. The domestic high strength bolt connection construction method generally adopts the torque method. At present, most of the domestic mainstream wind [...]
Blackening Treatment of High Strength Bolts
The blackening treatment of high strength bolts mainly requires the appearance, including the following points: 1. The appearance of blackening treatment is blue black or dark black. 2. The crystal of the film is compact and uniform, and the product has no exposed bottom, no obvious color difference, no whitening and other abnormal phenomena. If [...]
Hexagon Head Bolts Installation and Application
Hexagon head bolts installation and application is directly related to the quality and service life of fasteners, and the safety of bolts is the primary consideration. Main factors affecting hexagon head bolt: the selection of material, thickness of steel plate, processing and cutting, surface coating and installation of steel structure parts shall comply with design [...]
Grade 12.9 Hex Bolts Types
According to the items, the Grade 12.9 Hex Bolts can be divided into grade 12.9 external hexagon screw, grade 12.9 hexagon socket head screw (cup head), grade 10.9 countersunk head hexagon screw (flat cup), grade 10.9 semicircular head hexagon socket head screw (round cup), grade 12.9 set screw (machine meter), grade 12.9 hexagon plug screw [...]