Repairing cast iron parts with hot buckle

The part to be repaired is the lead of the air hammer rod, and its flange root is broken (Fig. 1). The most common repair method is welding repair, but because the workpiece is gray cast iron, the weldability is poor, and the preparation work and process of welding are complicated, and the quality is difficult to guarantee. We have used the simple hot buckle to repair the law and achieved satisfactory results.

Rotor Pump With Water-proff Cover

We are a world-leading technology-based enterprise focus on R&D and manufactures non-Newtonian fluid conveying equipment. We specialize in rotary pumps, homogeneous pumps and grinding pumps. We have obtained 11 invention Patents and 46 practical patents, and won many national honorary titles.


Twin-rotor lobe pump are multi-functional and bi-directional positive displacement pumps, produced with fine technology. These products use synchronic rotors, driven by a pair of synchronic gears in the gear box. Transmitted by the main shaft and the sub-shaft. The rotors move synchronically in counter-clockwise a directions, which, consequently, varies the pump capacity and builds up high vacuum capacity and emission pressure. It is particularly suitable to pump sanitary medium, high-corrosive and high-viscous medium.


Rotor pump with water-proff cover: The pump is equipped with a detachable protective cover for the whole machine, and the material is S.S., it can protect the motor, coupling and other parts from corrosion during on-site cleaning.


In the past 30 years, we dedicate to provide the scientific and professional solutions in fluid field. In the field of complex fluid transportation, our company's R&D technology, manufacturing technology, application technology is at the leading position in the world.


Durrex pumps can be widely used in food, consumer chemical, refined chemical, paper making, chemical fiber, pharmaceuticals, coating, etc. We will continue to focus on scientific research and innovation, improve the level of precision manufacturing, and continuously promote the intelligent development of fluid transportation industry, to create greater value for global users

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NINGBO DURREX PUMPS CO.,LTD , https://www.durrexlobepump.com