One of the critical factors to consider when choosing concrete pump parts is the manufacturing process. Parts can be produced using various methods, including forging, casting, and machining, each with its own advantages and disadvantages depending on factors such as cost, durability, and application.
Forging Process: Preparation, Preheating, Forging, Cooling, and Post-processing
The first step is preparation. Before forging, some preparation work needs to be done on the metal materials. This includes selecting the appropriate raw materials, calculating the required processing quantity, and designing the necessary molds.
Next is preheating. Before forging, the metal material needs to be heated to a certain temperature range. This makes it softer and easier to process, and helps prevent issues like cracking. The preheating temperature is typically determined based on the type of metal material and the desired shape.
Then comes the forging process itself. During forging, the preheated metal material is placed into the mold and its shape is changed using pressure or impact force.
Die forging uses molds to control the shape of the metal material. This method is suitable for complex shapes and large-scale production. The molds can be single or multi-segmented, depending on the desired shape.
During the forging process, it's important to control parameters such as processing temperature, pressure, speed, and direction to ensure the metal material obtains the correct shape and properties.
After forging is complete, cooling is necessary. Cooling can be done through methods such as air cooling, water quenching, or oil quenching. This process can make the metal material harder and more durable, and help eliminate internal stress.
Finally, there is post-processing. After forging is complete, some post-processing may be required, such as deburring, polishing, or painting.
Superior strength and durability compared to casting.
Increases material strength and toughness due to denser grain structure.
Higher cost compared to casting.
Casting is a process of pouring liquid metal into a mold, allowing it to solidify and cool before removing the desired shape
Lower cost, suitable for mass production.
High surface finish for better appearance.
Lower internal quality compared to forging, prone to defects like porosity.
Inferior strength and toughness compared to forging, susceptible to deformation and cracking.
Forging and casting are common metal forming methods, each with its advantages and disadvantages. While forging excels in strength, the choice between the two depends on specific usage scenarios.
Pump pipes are among the most critical components of concrete pump trucks, directly impacting the efficiency and safety of the vehicle. They are divided into high-pressure and low-pressure pipes, with the former capable of withstanding higher pressures as the boom length increases. Based on production processes, pump pipes can be categorized as straight seam welded pipes and seamless pump pipes. Seamless steel pipes are commonly used for pump pipes, followed by various heat treatments. The bends are specially processed pipe fittings connected to the pipe body through welding. Flanges are then welded at both ends of the pump pipe to complete the assembly.
