There are many ways to prepare materials, how to choose the right preparation process

When choosing a preparation process, you need to consider including product structure, product selection, product advantages and use scenarios.

I. Methods of selecting preparation technology

1. Product structure is a key factor in the production process

Different product structures require different production processes to ensure their quality and performance. For example, for projects that require the production of models or prototypes, 3D printing technology is a good choice because it can quickly and accurately produce objects with complex shapes.

2. For product selection

Different materials require different fabrication processes. For example, for parts that need to withstand high temperatures, metal or ceramic materials can be selected and processed using the appropriate sintering or casting processes. For products that need to be lightweight and aesthetically pleasing, plastic or composite materials can be used and processed using injection, blow molding or thermoforming processes.

3, product advantages

The production process can make the product has waterproof, dustproof, shockproof and other characteristics, but also can make the product has a more beautiful appearance and more humane operation. These advantages can improve the overall quality and competitiveness of the product.

4, the use of the scene

For products that need to be used in harsh environments, you need to choose materials and production processes with corrosion-resistant, abrasion-resistant, heat-resistant and other characteristics. For products that need to be used in the high air, you need to choose the material and production process with lightweight and stability.

Second, the common preparation technology

1, powder metallurgy technology

Powder metallurgy technology mainly includes powder and molding two parts. At present, the most widely used powder making method is mechanical grinding method, the equipment used is various types of mills. Grinding, grinding media so that the powder particles by different sizes of impact, shear, rubbing force, to minimize the energy generated by the fracture, crushing. Mechanical grinding method can be used to obtain micron-sized micro-fine powder.

2, rapid solidification technology

The basic principle is to try to split in time or space into very small sized parts, and reduce the melt volume and the melt and cooling media in contact with the ratio of the area of heat dissipation, so as to avoid the release of a large number of concentrated release of the latent heat of accelerated chemical and improve the thermal contact between the melt and the cooling medium, so that the melt by the cooling medium to be rapidly cooled to be solid.

3, near-final molding technology

Near-final molding technology will be the metal alloying, smelting, solidification, shaping and other technologies into one, concentrated in a process to complete the physical transformation and control, is a new branch of materials preparation science. The use of this technology, blank preparation can be formed once, no longer hot work, a large number of cutting process, improve the utilization of metal and production efficiency.

Evaluation of sample preparation method selection

1, can maximize the degree of removal of interferences affecting the determination of

This is an important measure of the effectiveness of the sample preparation method, otherwise even if the method is simple, fast, but also useless.

2, the measured components of the recovery

The recovery is usually accompanied by poor repeatability of the results, not only affecting the sensitivity and accuracy of the method, and ultimately make the low concentration of the sample can not be measured, because the lower the concentration, the recovery is often worse.

3, the cost of high and low

Try to avoid the use of expensive instruments and reagents, for the development of some of the new efficient, fast, easy, reliable and high degree of automation of the sample preparation technology, although some of the instrumentation price is high, but compared to the benefits it produces, the investment is still worth it.

4, the human body and the impact of the environment

Should be used as little as possible or do not pollute the environment or affect human health reagents, even if it is unavoidable must be used when the recovery and recycling, so that the harm is reduced to a minimum.