Wuxi Duorunde Steel Pipe Co., Ltd. (my answer); GCR15 precision steel pipe is a high-precision, high-hardness steel pipe that is widely used in the manufacturing of various machinery and bearing components. Its manufacturing process is as follows:
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Prepare raw materials: Select appropriate steel ingots or billets, and their composition and specifications should be based on the steel pipe. Selection and processing according to usage and requirements. ?
Heating: Put the steel ingot or billet into a heating furnace and heat it to reach a temperature range suitable for plastic deformation. The heating speed and temperature need to be controlled during the heating process to avoid defects such as cracks.
Rolling: Put the heated steel ingot or billet into the rolling mill for rolling, gradually reducing its diameter and thickness, and forming the required tube blank shape. During the rolling process, the pressure and temperature of the rolling mill need to be controlled to ensure the accuracy of the shape and size of the tube blank.
Piercing: Pass the rolled tube blank through a perforating device to form a hollow tube. During the piercing process, the piercing speed and torque need to be controlled to avoid cracks or deformation of the tube blank.
Diameter expansion: Pass the perforated steel pipe through a diameter expansion device to further expand its diameter. During the diameter expansion process, the speed and intensity of diameter expansion need to be controlled to avoid cracks or deformation of the steel pipe.
Cooling: The expanded steel pipe is cooled to restore it to a temperature range suitable for further processing. The cooling rate needs to be controlled within a certain range to avoid cracks or deformation of the steel pipe.
Sizing: Pass the cooled steel pipe through a sizing device to make its diameter and shape more stable and consistent. During the sizing process, the sizing speed and torque need to be controlled to avoid cracks or deformation of the steel pipe.
Straightening: Straightening the sized steel pipe to correct its curvature and improve its straightness. During the straightening process, the straightening speed and torque need to be controlled to avoid cracks or deformation of the steel pipe.
Heat treatment: The straightened steel pipe is heat treated to adjust its internal structure and improve its hardness and elasticity. During the heat treatment process, the temperature and time of heating and cooling need to be controlled to ensure that product performance and quality meet requirements.
Surface treatment: Surface treatment is performed on the heat-treated steel pipe, such as polishing, galvanizing, etc., to improve its corrosion resistance and aesthetics. During the surface treatment process, the speed and temperature of the treatment need to be controlled to ensure that the surface quality meets the requirements.
Non-destructive testing: Non-destructive testing is performed on the surface-treated steel pipes to ensure that their internal and external quality meets requirements. During the non-destructive testing process, ultrasonic, radiographic and other testing methods are required to find defects such as cracks and pores inside the steel pipe.
Quality inspection: Conduct quality inspection on steel pipes that have passed non-destructive testing, including testing of size, shape, hardness, elastic properties, etc. Various measuring instruments and testing methods are used during the quality inspection process to ensure that product quality meets requirements.
Packaging and warehousing: Packaging and warehousing of qualified products for subsequent shipment and use. The quality and safety of the packaging must be controlled during the packaging and storage process to ensure that the product is not damaged during transportation and use.
In addition to the above manufacturing process steps, GCR15 precision steel pipe manufacturing also needs to pay attention to the following points:
Material selection: select high-quality raw materials and alloys to ensure the composition and performance of the product Meet the requirements.
Process stability: Ensure the stability and consistency of each production link to ensure the stability and repeatability of product quality.
Quality control: Establish a complete quality control system and conduct strict quality monitoring and management of each production link to ensure that the quality of the final product meets the requirements.
Technological innovation: Continuously carry out technological innovation and equipment updates to improve production efficiency and product quality to meet changing market demands.
Environmental control: Pay attention to environmental protection and sustainability of resource utilization during the production process to achieve green manufacturing in line with social and market development trends.