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I. Ningbo precision pipe processing technology Ningbo precision pipe processing technology mainly includes fine drawing, fine rolling, cold drawing and other processes. The adoption of these processes greatly improves the precision and quality of steel pipes, and also improves the production efficiency.
1. Fine drawing process Fine drawing process is an advanced steel pipe manufacturing process, which improves the internal and external surface quality of steel pipe through continuous reducing for many times, and accurately controls the precision and wall thickness of steel pipe. In the process of fine drawing, the diameter and wall thickness of the steel pipe are accurately controlled by reducing the diameter for many times, and at the same time, the residual stress of the steel pipe is reduced and the mechanical properties of the steel pipe are improved.
2. Finishing rolling process? Finishing rolling process is a process of precise rolling of steel pipe at high temperature. Through finishing rolling process, the diameter and wall thickness of steel pipe can be accurately controlled, and the external surface quality of steel pipe can be improved. Finishing rolling process can also refine the grain of steel pipe and improve the mechanical properties of steel pipe.
3. Cold drawing process Cold drawing process is a processing method carried out at room temperature, which reduces the diameter and wall thickness of steel pipe by stretching and reducing the diameter, and improves the external surface quality of steel pipe. Cold drawing process can also reduce the residual stress of steel pipe and improve the mechanical properties of steel pipe.
Second, Ningbo precision pipe making? The manufacturing of Ningbo precision pipe needs to go through many steps and strict control, including selecting raw materials, heating, forming, cooling, testing and other steps. In these steps, each step needs precise control to ensure the quality and accuracy of steel pipes.
Choose raw materials? High-quality raw materials, such as high-quality steel and stainless steel, need to be selected for manufacturing precision pipelines. These raw materials need to meet certain requirements of chemical composition and mechanical properties to ensure the performance and quality of the manufactured precision pipes.
2. heating? In order to improve the plasticity and deformation resistance of materials, it is necessary to heat raw materials. The heating temperature needs to be accurately controlled according to the properties of materials and processing requirements.
3. molding? The forming of precision pipe fittings needs to adopt advanced processing technology, such as fine drawing, fine rolling and cold drawing. These processing technologies can deform raw materials at high temperature or normal temperature, and accurately control the diameter and wall thickness of steel pipes. In the forming process, it is necessary to accurately control the flow and deformation of materials to ensure the shape and quality of steel pipes.
4. cool down? The cooling of precision pipes requires appropriate cooling methods to ensure the accuracy and quality of steel pipes. Common cooling methods are water cooling, air cooling and oil cooling. In the cooling process, it is necessary to accurately control the cooling speed to avoid cracks, shrinkage cavities and other defects in the steel pipe.
5. test? The manufacture of precision pipes needs strict inspection to ensure the quality and accuracy of steel pipes. Inspection items include the diameter, wall thickness, internal and external surface quality and mechanical properties of steel pipes. Advanced testing equipment and scientific testing methods are needed in the testing process to ensure the accuracy and reliability of the testing results.
Three. Ningbo Precision Pipe Standard Ningbo Precision Pipe Standard is formulated according to relevant national standards and international advanced standards. These standards involve the manufacture, inspection, packaging and transportation of precision pipelines to ensure that the quality and accuracy of Ningbo precision pipelines reach the international advanced level. At the same time, Ningbo precision pipe standard also meets the requirements of national environmental protection, energy saving and emission reduction, which provides a strong guarantee for the development of steel pipe manufacturing industry. Ningbo Jingguan has advanced processing technology, strict manufacturing standards and reliable quality. The precision pipe fittings produced in Ningbo are widely used in machinery, hydraulics, automobiles and other fields, and have won unanimous praise from users.