Common problems and issues encountered in CNC machining

Common problems and issues encountered in the CNC machining of magnesium alloys ...
What are the characteristics compared to other metals

1. The specific strength is high, and the density of magnesium alloy (unit: g/cm3 or kg/m3) is 4.5g/cm3, which is only 60% of steel. It is often used for aircraft engine components, skeletons, skins, etc.;

2. High thermal strength, the working temperature of magnesium alloy can reach 500℃, while that of aluminum (Al) alloy is only about 200℃;

3. Good corrosion resistance, magnesium alloy can work in humid weather and sea water medium (substance that plays a decisive role).


Shenzhen CNC machining has higher production efficiency in the case of multiple varieties and small batch production, which can reduce the time of production preparation, machine tool adjustment and process inspection, and reduce the cutting time due to the use of the best cutting amount.

CNC machine tool processing solves the problem of complex, precise, small batch, and multi-variety parts processing. It is a flexible, high-performance automatic machine tool, representing the development direction of modern machine tool control technology, and is a typical mechatronics product. It has been widely used in modern industry, greatly improving the production efficiency of enterprises. Huizhou CNC machining has great advantages over manual machining. For example, the parts produced by CNC machining are very accurate and repeatable;


CNC machining can produce parts with complex shapes that cannot be completed by manual machining. Numerical control machining technology is now widely promoted. Most machining workshops have CNC machining capabilities. The most common CNC machining methods in typical machining workshops are CNC milling, CNC lathe, and CNC EDM wire cutting (electric discharge wire cutting). However, it has poor corrosion resistance to reducing oxygen and chromium salt media;

4. Good low temperature performance;

5. High chemical activity;

6. The thermal conductivity is small, and the modulus of elasticity is small; what kind of cutting characteristics does this excellent material have?

1. The deformation coefficient is small, the deformation coefficient is close to 1;

2. The cutting temperature is high. Due to its low thermal conductivity, the heat generated during the cutting process is not easy to dissipate;

3. Large cutting force per unit area;

4. The severe cold hard phenomenon will aggravate tool wear (a basic type of component failure);


For poor cutting performance, how do we choose CNC tool materials?

Cutting magnesium alloys should be based on two aspects: reducing the cutting temperature and maximizing the reduction of adhesion. Choose tool materials (Material) with good red hardness, high hot bending strength, good thermal conductivity, and poor affinity with magnesium alloys. YG cemented carbide More suitable; commonly used cemented carbide materials include YG8, YG3, YG6X, YG6A, 813, 643, etc.; using diamond and cubic boron nitride (B) tools to cut magnesium alloys can achieve significant results.