High strength bolts are mainly used in steel structure engineering to connect the connection points of steel structure steel plates

高強(qiáng)螺栓的一個非常重要的特點(diǎn)就是限單次使用，一般用于連接，嚴(yán)禁重復(fù)使用！

A very important feature of high-strength bolts is that they are limited to single use. They are generally used for permanent connection. Reuse is strictly prohibited!

高強(qiáng)螺栓分類：

Classification of high strength bolts:

按受力狀態(tài)分為：

According to the stress state, it is divided into:

摩擦型和承壓型；

Friction type and pressure bearing type;

按施工工藝分為：扭剪型高強(qiáng)螺栓和大六角高強(qiáng)螺栓。

According to the construction process, it is divided into torsional shear high-strength bolt and large hexagon high-strength bolt.

大六角高強(qiáng)螺栓屬于普通螺絲的高強(qiáng)度級,而扭剪型高強(qiáng)螺栓則是大六角高強(qiáng)螺栓的改進(jìn)型,為了更好施工.

Large hexagon high-strength bolt belongs to the high-strength grade of ordinary screw, while torsion shear high-strength bolt is an improved type of large hexagon high-strength bolt for better construction

高強(qiáng)螺栓的施工必須先初緊后終緊,初緊高強(qiáng)螺栓需用沖擊型電動扳手或扭矩可調(diào)電動扳手;而終緊高強(qiáng)螺栓有嚴(yán)格的要求,終緊扭剪型高強(qiáng)螺栓必須用扭剪型電動扳手,終緊扭矩型高強(qiáng)螺栓必須用扭矩型電動扳手.

The construction of high-strength bolts must be tightened first and then finally. The impact electric wrench or torque adjustable electric wrench is required for the initial tightening of high-strength bolts; The final tightening of high-strength bolts has strict requirements. The final tightening of torsional shear high-strength bolts must use torsional shear electric wrench, and the final tightening of torque high-strength bolts must use torque electric wrench

大六角強(qiáng)螺栓?由一個螺栓，一個螺母，兩個墊圈組成。

Large hexagon bolt? It consists of a bolt, a nut and two washers.

扭剪型高強(qiáng)螺栓?由一個螺栓，一個螺母，一個墊圈組成。

Torsional shear high strength bolt? It consists of a bolt, a nut and a washer.

用高強(qiáng)度鋼制造的,或者需要施以較大預(yù)緊力的螺栓,皆可稱為高強(qiáng)度螺栓.高強(qiáng)度螺栓多用于橋梁、鋼軌、高壓及超高壓設(shè)備的連接.這種螺栓的斷裂多為脆性斷裂.應(yīng)用于超高壓設(shè)備上的高強(qiáng)度螺栓,為了保證容器的密封,需要施以較大的預(yù)應(yīng)力.?

Bolts made of high strength steel or requiring large preload can be called high strength bolts High strength bolts are mostly used for the connection of bridges, rails, high pressure and ultra-high pressure equipment The fracture of this kind of bolt is brittle fracture For high-strength bolts applied to ultra-high pressure equipment, large prestress is required to ensure the sealing of the container?

關(guān)于高強(qiáng)度螺栓的幾個概念1.按規(guī)定螺栓的性能等級在8.8級以上者,稱為高強(qiáng)度螺栓.現(xiàn)標(biāo)準(zhǔn)只羅列到M39,對于大尺寸規(guī)格,特別是長度大于%10~15倍的高強(qiáng)度螺栓,國內(nèi)生產(chǎn)尚屬短線.

Some concepts about high strength bolt 1 According to the regulations, the performance grade of the bolt is above grade 8.8, which is called high-strength bolt At present, the national standard only lists M39. For large-size specifications, especially high-strength bolts with length greater than% 10 ~ 15 times, domestic production is still short-term