Classification of hydraulic press
There are many kinds of machinery driven by hydraulic pressure made by Pascal's law. Of course, the use is also different according to needs. For example, according to the types of liquids that transmit pressure, there are two categories: hydraulic press and hydraulic press. The total pressure produced by hydraulic press is large, and it is often used for forging and stamping. Forging hydraulic press is divided into die forging hydraulic press and free forging hydraulic press. Die forging hydraulic press needs die, while free forging hydraulic press doesn't need die. The first 10,000-ton hydraulic press made in China was a free forging hydraulic press. According to the structural form, hydraulic presses are mainly divided into four-column hydraulic presses, single-column (C-type) hydraulic presses, horizontal hydraulic presses and vertical frame hydraulic presses.
Use of hydraulic press
Mainly divided into metal forming hydraulic press, bending hydraulic press, stretching hydraulic press, blanking hydraulic press, powder forming hydraulic press, press-fitting hydraulic press, extrusion hydraulic press and so on.
Working principle of hydraulic press
Hydraulic transmission is a transmission mode that uses hydraulic pressure to transmit power and control. The hydraulic device consists of hydraulic pump, hydraulic cylinder (hydraulic motor and other actuators), hydraulic control valve and hydraulic auxiliary components.
Hydraulic pump: a conversion device that converts mechanical energy into hydraulic energy.
Hydraulic cylinder (actuator such as hydraulic motor): converts hydraulic energy into mechanical energy.
Control valve: controls the flow, direction and pressure of hydraulic oil and the working sequence of hydraulic actuators to protect the hydraulic circuit. Generally speaking, it is to control and adjust the flow, pressure and flow of hydraulic medium, so as to control the movement direction, output force or torque, movement speed and action sequence of the actuator, limit and adjust the working pressure of the hydraulic system, and prevent overload (such as one-way valve, reversing valve, relief valve, sequence valve and throttle valve).
Auxiliary parts: 1, oil tank: used for oil storage and heat dissipation. Separate impurities 2 from air and oil, tubing and tubing joint 3, oil filter 4, pressure gauge 5 and sealing element.
Not long ago, Wanquan County was recommended by the Hebei Specialty Economic Seminar and was recognized as "the hometown of hydraulic cylinders in China" by the Organizing Committee of China Specialty Election and Publicity Activities. Insiders pointed out that this honor marks that Wanquan County 175 Enterprise Group has gained the right to speak in the domestic hydraulic cylinder production industry. Since last year, with the completion and operation of the 200,000-meter hydraulic cylinder production line of Changyu Construction Machinery Hydraulic Cylinder Co., Ltd. with an investment of 280 million yuan, the coal machine manufacturing project with an investment of 300 million yuan, and the machine tool production base of Beijing Jingyi Group with an investment of 65.438+0.5 billion yuan, Wanquan County has started another project with more than 500 million yuan ... This is the "industrial cluster" of Wanquan County. In recent years, Wanquan hydraulic cylinder industry, which has a development history of more than 30 years, has broken away from the original accumulation stage of single-handedness, and gradually formed a new cluster development model led by leading enterprises and supported by park construction. As the industrial agglomeration effect has spread to six provinces and regions such as Shanxi, Hebei and Inner Mongolia, Wanquan hydraulic cylinder industry has become one of the 25 key industrial clusters in Hebei Province. The development of mechanical casting industrial cluster in Wanquan County has experienced a long and painful process. In the middle and late 1980s, with the transition of economic system, a number of state-owned collective enterprises integrating machinery and forging were shut down in the shock, while some small enterprises mushroomed. However, due to many reasons, these small enterprises are still at the level of tinkering, unable to take shape, and the industrial development model needs to be transformed urgently. Wide range of innovative ideas. The leaders of Wanquan county realized that the train runs fast and depends on the front of the car. If we want to speed up the "train" in the mechanical processing industry, we must find a powerful "locomotive" for it, and this locomotive is the leading enterprise. Since then, the county has been actively innovating ideas and began to carry out the "leading and driving" strategy for some large enterprises such as Great Wall Hydraulic Cylinder Co., Ltd. and Mining Machinery Factory. Priority is given to all aspects. The sales volume of HOWO heavy truck of China National Heavy Duty Truck in Holingol City reached a record high, which enhanced the concentration of various elements to leading enterprises and cultivated leading enterprises to become bigger and stronger. At present, Great Wall Hydraulic Cylinder Co., Ltd. and Changyu Drilling Hydraulic Cylinder Co., Ltd., two leading enterprises in the mechanical processing industry in this county, have become famous enterprises in the industry. With excellent quality and continuous innovation and development, Changyu Construction Machinery Hydraulic Cylinder Co., Ltd. sells well in 27 provinces and cities across the country, supporting more than 20 main engine factories such as Xugong Group, Sany Heavy Industry Group, Futian Heavy Industry and De Bao Guo 'e, and its main engines are exported to more than 20 countries such as the United States and Canada, making it the largest in North China. Hope to adopt! !