Focus on the following 5 points to easily choose the right material for the parts used in CNC machining


As we all know, there are many kinds of materials available for CNC machining, and to select materials suitable for products and processes, a basic principle should be observed, that is, the performance of the material must meet the technical requirements and environmental requirements of the product.

When choosing materials, you can consider the following aspects:

01- Rigidity of material

Rigidity is the first criterion that should be considered when selecting materials in the machining industry.

Reason: the product needs a certain stability and wear resistance in the actual production, and the rigidity of the material determines the feasibility of product development and design;

According to the characteristics of the industry, non-standard tooling design will generally choose high-quality 45 steel and aluminum alloy; Tooling design for machining, 45 Steel and Alloy Steel; Automation industry tooling design, usually choose aluminum alloy;

[Supplement: The tempered hardness range of 45 steel is generally between 200-600HV, with good rigidity; the rigidity of alloy steel is generally 300HV]

02- Material stability

For a product with high precision requirements, if the selected material is not stable enough, various deformation occurs after assembly or deformation during use, it will be a very unpleasant experience for the production, development and actual use of the product;

It is required to select materials with certain stability, which can largely ensure that the finished product will not be greatly deformed with the change of temperature, humidity and vibration environment;

03- Machinability of materials

The machinability of the material needs to consider the following points: hardness, strength, plasticity, toughness, thermal conductivity, etc.;

For example, although stainless steel is anti-rust and anti-corrosion, stainless steel has high hardness and is easy to wear props during processing; Materials that are not easy to process; Plastic hardness is low, but it is easy to soften and deform during heating, and it also needs to be selected according to actual needs;

04- Anti-rust treatment of materials

Anti-rust treatment is related to the stability and appearance quality of the product; For the 45 steel mentioned above, Yixin usually chooses to "blacken" treatment for rust prevention, or spray paint and spray the parts; It can also use sealing oil or anti-rust liquid to prevent rust according to the use environment;

05- Cost of materials

Cost is an important indicator to consider when selecting materials; Titanium alloy light weight, at the same time has a very high strength, excellent corrosion resistance is generally widely used in automotive engine systems, in the energy saving riding a very large role; However, in the actual material selection, it is generally not recommended to preferentially choose titanium alloy. The main reason is that the cost of titanium alloy is too high, if not necessary, we suggest choosing cheaper materials.

Lorimachining specializes in CNC machining. We provide professional CNC machining service. Contact us!

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