In the field of metal processing, the process mainly includes three important stages, each of which has a unique role and significance, and together they shape metal products that meet various needs.

The first stage of metal processing is rough processing. The main purpose of this stage is to remove a large amount of excess metal material and quickly process the raw material into a blank close to the final shape. In the rough processing process, a larger cutting depth, a higher feed rate and a relatively low cutting speed are often used. For example, when forging a blank of a large metal part, the metal block is initially formed by strong forging, or a high-power cutting machine is used to perform rough milling and rough turning on the metal raw material.

Like the spindle of a large machine, the raw material must first be processed into a shaft with a rough outline in the rough processing stage to lay the foundation for subsequent further processing. Although rough processing focuses on efficiency, it is also necessary to consider the reasonable reservation of subsequent processing allowances to avoid affecting the performance and precision of metal parts due to the removal of too much material.

The second stage is semi-finishing. After rough processing, the part has a basic shape, but it cannot meet the final precision and surface quality requirements. At this time, it enters the semi-finishing stage. Semi-finishing will appropriately increase the cutting speed, reduce the feed rate and cutting depth to improve the machining accuracy and improve the surface roughness. For example, when semi-finishing the spindle after roughing, a higher-precision machine tool will be used to further cut the outer circle, thread and other parts of the shaft to make the dimensions of each part more accurate and the surface smoother. Semi-finishing can effectively correct some shape errors and dimensional deviations left by roughing, and reserve appropriate machining allowances for the final finishing. This stage plays a key role in whether the final product can achieve the accuracy required by the design.

The last stage is finishing. Finishing is the final fine processing of metal parts to ensure that they achieve extremely high precision and excellent surface quality. At this stage, the cutting speed is usually very high, while the feed rate and cutting depth are extremely small. For example, the use of grinding technology to perform ultra-precision machining on the surface of metal parts can make the surface roughness reach micrometer or even nanometer levels. For some high-precision molds, aerospace parts, etc., finishing determines the performance and service life of the product. After finishing, metal parts can meet the most stringent requirements in terms of dimensional tolerance, shape accuracy and surface finish.

Zhuhai Chuntian Machinery has excellent performance in these three stages of metal processing. They have advanced processing equipment, from high-power machine tools suitable for rough processing, to high-precision CNC equipment for semi-finishing, to professional equipment such as grinding and polishing that can achieve ultra-precision finishing. At the same time, Zhuhai Chuntian Machinery's technical team is experienced and can scientifically and rationally formulate the processing parameters for each stage according to the characteristics of different metal materials and the design requirements of parts, strictly control every link in the processing process, and ensure that the processed metal products can reach the industry-leading level in terms of accuracy, quality and performance, providing high-quality metal processing services for many fields such as machinery manufacturing, aerospace, and automotive industry, and establishing a good reputation in the metal processing industry and playing an important leading role.

The three stages of metal processing - rough processing, semi-finishing and finishing, cooperate with each other and proceed step by step, which is the key path to manufacturing high-quality metal products, and Zhuhai Chuntian Machinery is an excellent practitioner on this road.