电动扳手的产品名称型号不同，用途使用范围也不同。这里介绍定转矩电动扳手，供使用参考。
The product name and model of electric wrench are different, and the scope of use is also different. The constant torque electric wrench is introduced here for reference.
定转矩电动扳手是一种能自动控制转矩的电动扳手。它适用于需要用高强度螺栓连接的桥梁结构、大型钢塔、钢结构厂房、冶金设备的构架、大型起重机架、矿井钢架等工程中及大型柴油机、发电设备、化工设备中，要求恒定的夹紧力连接的螺栓也可用定转矩扳手来紧固。
The constant torque electric wrench is a kind of electric wrench that can automatically control the torque. It is applicable to bridge structures, large steel towers, steel structure workshops, metallurgical equipment frames, large crane frames, mine steel frames and other projects that need to be connected with high-strength bolts, and large diesel engines, power generation equipment, and chemical equipment. Bolts that require constant clamping force can also be tightened with a constant torque wrench.
特别在现代桥梁建设中，定转矩电动扳手是实现以“栓焊梁”代替“铆焊梁”的有效工具。这对简化工地安装工序、降低建桥成本、减轻劳动强度，从而加速桥梁建设具有较大的意义。
Especially in modern bridge construction, fixed torque electric wrench is an effective tool to replace "riveted beam" with "bolted beam". This is of great significance to simplify the site installation process, reduce the cost of bridge construction, reduce the labor intensity, and accelerate the bridge construction.

定转矩电动扳手的转矩以电气装置来进行控制。这种电动扳手具有耗电量少、噪声小、调节灵活、能自动停机、转矩稳定等优点。
The torque of fixed torque electric wrench is controlled by electrical device. The electric wrench has the advantages of low power consumption, low noise, flexible adjustment, automatic shutdown and stable torque.
恒刚制造的120kgf·m定转矩电动扳手是一种静转矩结构的扳手。它可作为高强度螺栓的终拧工具，即把初拧过的螺栓再拧到规定的力矩。
The 120kgf · m constant torque electric wrench manufactured by Henggang is a kind of wrench with static torque structure. It can be used as a final screwing tool for high-strength bolts, that is, to screw the initially screwed bolts to the specified torque.
电动扳手是装卸螺纹联接件的手持式电动工具，应用于汽车、拖拉机、电机电器、动力机械、阀门、水泵、纺织机械等制造业的装配工作中，在化工、水泥预制件、塑料成型等作业中则用于生产流程中装拆真空罐、反应釜和水泥模板、带螺纹塑料件的脱模工作；也可用在铁道、桥梁、建筑等工程中作水泥轨枕、桁架节点、角钢脚手架等结构的安装、检修和拆换工作
The electric wrench is a hand-held electric tool for loading and unloading threaded connectors. It is used in the assembly work of automobile, tractor, electric motor, power machinery, valve, water pump, textile machinery and other manufacturing industries. In the chemical industry, cement prefabricated parts, plastic molding and other operations, it is used for the assembly and removal of vacuum tank, reaction kettle, cement template, and demoulding of threaded plastic parts in the production process; It can also be used for the installation, maintenance and replacement of cement sleepers, truss joints, angle steel scaffolds and other structures in railway, bridge, construction and other projects
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