Difference between CNC machining and 3D printing

cnc machining parts in china

When quoting a prototype project, you need to choose a suitable processing method based on the characteristics of the parts to complete the prototype project faster and better. At present, the main hand processing includes CNC machining, 3D printing, lamination, rapid mold and so on. Today we talk about the difference between CNC machining and 3D printing.
First of all, 3D printing is an additive technology, and CNC machining is a subtractive technology, so they are very different in terms of materials.
1.Material difference
The materials for 3D printing are mainly liquid resin (SLA), nylon powder (SLS), metal powder (SLM), gypsum powder (full-color printing), sandstone powder (full-color printing), wire (DFM), sheet (LOM) and many more. Liquid resins, nylon powders and metal powders account for most of the market for industrial 3D printing.
The CNC machining materials are all plate-by-plate materials, that is, plate-like materials. After measuring the length, width, height, and wear of the parts, the corresponding size plates are cut for processing. The choice of CNC machining materials is more than that of 3D printing. General hardware and plastic plates can be CNC machined, and the density of the molded parts is better than 3D printing.
2. Part differences due to molding principles
We mentioned earlier that 3D printing is an additive manufacturing. Its principle is to cut the model into N layers / N multi-points, and then stack them layer by layer / point by point in order, just like building blocks. same. Therefore, 3D printing can effectively process and produce complex structural parts, such as hollow parts, while CNC is difficult to achieve the processing of hollow parts.
CNC machining is a subtractive manufacturing process, which uses high-speed running tools to cut the required parts according to the programmed tool path. Therefore, CNC machining can only process rounded corners with a certain radian, but can not directly process the inner right angle. It must be achieved by wire cutting / sparking and other processes. External right-angle CNC machining is fine. Therefore, parts with inner right angles can be considered for 3D printing.
There is also a curved surface. If the surface area of ​​the part is large, it is also recommended to choose 3D printing. CNC machining of the curved surface is time-consuming, and if the programming and operator experience is not enough, it is easy to leave obvious lines on the parts.
3. Differences in operating software
Most of the 3D printed slicing software is simple to operate. Even lay people can be proficient in operating the slicing software under the professional guidance of two days. Because the slicing software is currently very simple to optimize, the support can be automatically generated, which is why 3D printing can be popularized to individual users.
The CNC programming software is much more complicated and requires professionals to operate it. People with no basic knowledge generally study for about half a year. In addition, a CNC operator is required to operate the CNC machine.
Because the programming is very complicated, a part can have many CNC machining solutions, and 3D printing only has a small impact on the processing time and consumables due to the placement, which is relatively objective.
4. Differences in post-processing
There are not many post-processing options for 3D printed parts. Generally, they are polished, sprayed, deburred, dyed, and so on.
The CNC machined parts have a wide range of post-processing options. In addition to grinding, spraying, deburring, electroplating, screen printing, pad printing, metal oxidation, radium carving, sandblasting and so on.
I heard that there are successive orders, and the surgery industry has a specialization. CNC machining and 3D printing have their own advantages and disadvantages. Choosing the right process has a crucial impact on your slab project. Choose PTJ cnc machining shop and our engineers will analyze and suggest your project.

How long is the shelf life of copper

machining c145-c14500-tellurium-copper

Brass is not tinned for 3-12 months. Tellurium Copper tin is usually tinned for more than one year, but the storage environment must be good.
Ways to extend storage time
1. Cooling down. If the copper cylinder has a cooling system, first reduce the operating temperature to how much, refer to the parameters provided by your supplier
2.Add stabilizer. The added amount refers to your supplier, and make appropriate corrections according to the subsequent plating conditions and cylinder volume.
3. Decrease the pH value. How much the pH value is reduced will be adjusted according to the parameters provided by your supplier.
4. The circulation of the copper cylinder cannot be stopped during the waiting period. The gas stirring should be properly closed to avoid contact between the potion and metal substances. If it is a hanging basket, the hanging basket must be lifted out of the copper cylinder.
5. When re-production, the amount of plated plate will be revised according to the parameters provided by your supplier.
6.If the stagnation time of the copper cylinder is long and the volume of the cylinder is small, it is recommended to discharge it, because there are already many by-products, which will affect the coating quality
7.PTH is an important part of PCB production. The premise of cost saving is to ensure quality first. There is no guarantee of quality, so there is no need to talk about cost savings.
8. It is a question of whether to lower the pH or add a stabilizer. If the price of the potion is calculated based on the board area, it is recommended to add a stabilizer. However, there is no output, and the price of the potion is indeed too dark
PTJ Shop has a reputation for machining quality parts from Tellurium copper alloy 145. We can machine intricate parts on our CNC Swiss machines and CNC turning centers.Tellurium copper alloy 145 has good cutting performance and excellent electrical and thermal conductivity. It has corrosion resistance and electrical ablation resistance. It has good hot and cold processing properties. It can be forged, cast, extruded and punched. Molded. The product can be processed into profiles, sheets, rods, wires, tubes and other profiles and a variety of profiles.TeCu has a machining cost factor of 0.8 when compared to steel 12L14. It is good for hot and cold working, forging, brazing, and soldering, but is not ideal for welding. TeCu can be annealed.

What are the main applications of CuTeP copper tellurium

What are the main applications of CuTeP copper tellurium

Qte0.5 copper telluride (c14500)
Tellurium bronze material, ASTM designation c14500, is a kind of high conductivity and free laser cutting copper alloy material developed in 1960s according to the requirements of industrial development in the United States, which is used to fill the gap of copper alloy compact processing material.
Qte0.5 comparison of domestic and foreign brands of copper telluride:
China GB: qte0.5
International standard ISO: cute (P)
ASTM: c14500
German DIN: cutep
British BS: c109
The tellurium copper alloy material has excellent machinability, conductivity and heat conductivity, corrosion resistance and electric erosion resistance, good cold and hot working performance, and can be forged, cast, extruded, drawn and punched. Zhuoyi industrial products can be processed into plate, sheet, bar, wire, tube and other profiles and a variety of profiles.
Qte0.5 chemical composition of copper telluride:
Te: 0.40 ~ 0.7
P: 0.004 ~ 0.012,
Cu (including te + Su): 99.90
Use of qte0.5 tellurium bronze:
Qte0.5 tellurium bronze is used for parts with high conductivity, machinability and corrosion resistance, such as electrical connectors, automobile parts, switch parts, pipe fittings, solder joints, torch heads, transistor base and furnace assembly parts. The types of semi-finished products are: plate, strip, bar and profile.
C14500 tellurium copper alloy material is a high-grade high conductivity and easy cutting copper alloy material, which mainly has the following application fields:
1. High grade electronic and electrical components, such as avionics connector, new energy vehicle connector, solar power station connector, etc;
2. All kinds of automobile and machinery need anti arc and anti ablation switch;
3. Copper alloy parts requiring certain strength and precision machining;
4. Welding and laser cutting equipment nozzle, such as plasma welding and cutting machine nozzle;
5. High grade plumbing fittings;
6. Advanced motor parts.
7. Aviation connector plug-in.

Difference between CNC machine tools and traditional machine tools

precision machining china

precision machining china
precision machining china
There are great differences between CNC machine tools and traditional machine tools in the production process. The former machine tool is often more conducive to the forming process of parts, and the adaptability is more extensive. Let us take a look What are the advantages of both of them compared to CNC machine tools?
1.Highly flexible benefits
This type of CNC machine tool relies on the system’s programming process to process parts. However, for ordinary machine tools, many molds and fixtures are often required during processing, so many steps will be added. And, there will be some errors in manual operation, so they are still very advantageous compared to CNC machine tools.
2.The machining accuracy is also very high
In addition, the accuracy of this CNC machine tool is very high when processing. Its machining accuracy can reach a small value range, but it is often impossible to meet such accuracy requirements for traditional machine tools. .
The above are some advantages of CNC machine tools compared with traditional machine tools, and CNC machine tools will be more widely used in more industries in the future.

Application and future of CNC machining center

cnc machining services

cnc machining services
cnc machining services
Generally speaking, high speed and high precision are the key technical indicators of cnc machining center controller applications. Mpc08 mainly completes point motion control, can quickly and accurately locate and drill down, and then can quickly move to a certain position after leaving the PCB surface during lifting, thereby greatly improving the working efficiency of CNC drilling machines for PCBCN machining centers. The highest output frequency of mpc08 is 4MHz, which meets the high-speed requirements of PCB drilling machines. In traditional machining, ordinary machine tools are operated manually.

When machining, shake the machine by hand to cut the metal, and measure the accuracy of the product with the eyes and calipers. Modern industry has long used computer numerically controlled machine tools for operations. CNC machining services can automatically process any product and part according to the program pre-programmed by the technician. This is what we call “NC machining”. NC machining is widely used in various machining fields, and it is the development trend of mold machining and an important necessary technical means. With the development of miniaturization and miniaturization of electronic products, PCBs have increasingly higher requirements for via hole diameter, line width and line spacing. Therefore, the CNC system of PCBCNC machining center is developing in the direction of high speed, high precision, high reliability, system integration, flexibility and intelligence. The PCB drilling machine needs a large number of IO channels to monitor the status of various equipment and control output signals. Each mpc08 motion control card can control 16 universal inputs and 16 universal outputs, and has 17 dedicated input channels.

It can also be used when it is not needed. Changed to a general-purpose input channel, which fully meets the PCB drilling machine for I / O channels. cnc machining services is a fully automatic and efficient production equipment that 5 axis cnc machining integrates sawing, planing, drilling, milling, sanding, edge banding, edging and other processes. After the benchmark is set once, it is controlled digitally by the computer to complete multiple processes.