| Technology and production efficiency of pipe expander
Interchanged with thermal expansion pipe production skills, thermal expansion tube selection is a two step propulsion type cone die hole diameter expanding machine set of skills, skills of digital intermediate frequency induction heating, hydraulic skills in one machine, with its reasonable skills, lower energy consumption, low construction investment, compared to a wide range of raw materials and commodities standard adaptability, flexible and simple lower investment yield batch adaptability, It replaces the traditional drawing expanding skill of the steel pipe profession. Because it is difficult to deal with the supply of large-caliber steel pipe in the near future, thermal expansion steel pipe has become the main commodity origin of large-caliber steel pipe, which alleviates the serious supply situation of large-caliber steel pipe market. Cross rolling method or drawing method to expand the diameter of a steel tube finishing rolling process, in a short period of time to increase the steel tube, can produce a special type of seamless tube cost standard, and low cost contrast, high production efficiency, is the current world rolling tube category development trend.
Nowadays, various types of variable diameter steel tubes are used in the fields of industrial and agricultural production. For example, the refueling tube of car fuel tank is one of them. This variable diameter steel tube is made of an equal diameter steel tube by kneading and expanding cold processing. For a long time, the expansion of steel tube is by choosing a punch press or hydraulic press to processing, there are many questions, but this kind of method for force and speed is very difficult to control, expanding machine break rate is large, according to produce demand, contact the actual situation, choose hydraulic skills developed a new type of hydraulic expanding machine.
In order to improve the output power of the pipe expander and add economic benefits, many companies are committed to improving the operation of the pipe expander. The new pipe expander currently selected is to add two active main hydraulic cylinders on the original basis, so that the driving operation is completed in one step instead of the original two steps. A set of clamping roller equipment was added to make the preparation of feeding more concise, greatly saving time. Through the improvement of the pipe expanding machine, further improve its structure and operation function, so that it has the characteristics of low cost, high power, safe operation, simple operation, convenient repair, etc., can satisfy the requirements and functions of the company's production, reduce the cost, improve the economic benefits.
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