Overview of ZXQ-5 Fully Automatic Sample Metallographic Embedding Machine:

The sample embedding machine is used to embed samples with shapes or sizes that are not suitable in order to meet the subsequent sample preparation steps and obtain the required detection plane; Or to protect the edges or prevent surface defects caused by the preparation process. In modern metallographic laboratories, semi-automatic or automatic grinding/polishing machines widely used have specification requirements for sample size. In order to meet these requirements, it is necessary to embed the samples. Therefore, embedding machines have become one of the essential equipment in metallographic laboratories.

　　Function Description:

This machine belongs to the fully automatic metallographic specimen embedding machine, with the function of inlet and outlet water cooling, suitable for hot embedding of all materials (thermosetting and thermoplastic). After setting the embedding parameters such as heating temperature, insulation time, and force, the specimen and embedding material are put in, covered with a lid, and the work button is pressed to automatically complete the embedding work without the need for operators to be on duty at the machine. Four different specifications of molds can be selected and replaced according to different requirements, and two samples can be pressed simultaneously, doubling the preparation capacity.

　　Main technical parameters and specifications:

1. Mold specifications: 25mm, 30mm, 40mm, and 50mm
2. Power supply: 220V 50HZ
3. Maximum power consumption: 1600W
4. System pressure setting range: 0~2MPa (corresponding sample preparation pressure range: 0~72MPa)
5. Temperature setting range: 0~180 ℃
6. Range of insulation time setting: 0~99 minutes and 99 seconds
7. Dimensions: 615 × 510 × 500mm
8. Weight: 110KG
9. Cooling method: Water cooling

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　　Extended reading:

　　Embedding of metallographic specimens
In the preparation process of metallographic specimens, it is difficult to directly grind and polish many specimens, so they should be embedded. The embedded samples not only facilitate grinding and polishing, but also improve work efficiency and accuracy of test results. The specimens that are usually embedded include: irregularly shaped specimens; Wire and sheet materials; Small workpieces; Surface treatment and infiltration coating; Materials with surface decarburization, etc. The common methods for sample embedding include:
1. Mechanical inlay method: In the mechanical inlay method, the sample is placed in a steel ring or small steel clip, and then fixed with screws and pads. This method is easy to operate and suitable for embedding samples with regular shapes.
2. Resin inlay method: Resin inlay method is the use of resin to inlay small metallographic specimens, which can embed any shape of specimen into a certain size of specimen. Resin inlay method can be divided into two categories: hot pressing and casting inlay method.
a. Hot pressing inlay method is a process of heating polyvinyl chloride, polystyrene or electric wood powder to a certain temperature, applying a certain pressure and holding for a certain period of time, so that the inlay material is firmly bonded to the sample, and then the sample is ground. Hot pressing inlay requires the use of an inlay machine to complete.
b. Casting inlay method, due to the need for heating and pressure in hot pressing inlay method, has a certain impact on quenched steel and soft metals, so cold casting method can be used. The casting embedding method is suitable for specimens that do not allow heating, softer or lower melting point metals, specimens with complex shapes, and specimens with porosity. Or applied without embedded devices. Time has proven that using epoxy resin is better. The commonly used formula is 90g epoxy resin, 10g ethylenediamine, and a small amount of plasticizer (dibutyl phthalate) can also be added. Mix evenly according to the above ratio, inject into the prepared metal ring, and place the sample properly inside the ring. After about 2-3 hours, it can be solidified and demolded.