All posts in Technical Information

Zirconia ceramic products have precision errors or tolerance ranges after ceramic machining, so what is the reason for its appearance? Pintejin Ceramics Factory will give you an analysis. ​Zirconium oxide ceramic grinding is a kind of machining method to eliminate chips on the surface of the workpiece. Therefore, the dimensional change in the process of zirconia ceramic machining should be continuous. In the process of zirconia ceramic grinding, it can always reach a high level. accuracy. The grinding and polishing of zirconia ceramics is often the last process in the machining of a workpiece, and it is also a process that determines the accuracy of the workpiece. There is a Read more

Alumina ceramic is an industrial ceramic with high hardness that can only be processed by diamond grinding. It is made of bauxite and can be processed using injection molding, pressing, isostatic pressing, sliding casting, etc., then Pintejin ceramics Let us introduce the properties and characteristics of alumina ceramics. Properties and Characteristics of Alumina Ceramics Using high-purity sub-μm aluminum oxide ultrafine powder, it is possible to produce aluminum oxide high-precision ceramic raw materials with a tensile strength of 700-1000Mpa and a Weber displacement coefficient of 40. However, the impact toughness of such raw materials is extremely low. Generally only 3 ~ 4MPa.m. Therefore, improving the impact toughness of alumina ceramics has Read more

The principle of extrusion molding: the metal powder can be extruded at a certain temperature (usually in the range of 40-200 °C) after adding a certain amount of organic plasticizer to mix evenly. This method is called “cold extrusion method”. Or “plasticized powder extrusion”. It is generally extruded under normal temperature conditions. The ceramic powder used for extrusion molding must be mixed with water and plasticizer to prepare a billet before it can be used for extrusion molding. Vacuuming during the extrusion process is beneficial to the discharge of air in the blank, so that the green density of the shaped blank can be increased. During the extrusion process of Read more

The temperature difference and time of the high-temperature firing treatment after the alumina ceramic blank is formed have a great influence on the finished product. Therefore, the alumina ceramic ceramics have stricter requirements on the firing temperature in terms of performance and quality. To accurately control the sintering temperature, then we should take corresponding measures. Different alumina ceramics have different sintering temperature requirements, and the sintering temperature is actually related to the content of alumina. Theoretically, the higher the alumina content, the higher the sintering temperature. In fact, this statement is not completely absolute. It is also necessary to observe the composition and proportion of ceramic materials. Generally, when we Read more

New ceramic materials have their unique advantages in performance and are widely used in the field of modern science. The following Pintejin zirconia ceramic machining manufacturers will introduce the classification and performance of new ceramic materials to you. In terms of thermal and mechanical properties, the new ceramic materials have high temperature resistance, heat insulation, high hardness, wear resistance, etc.; in terms of electrical properties, they have insulation, piezoelectricity, semiconductor properties, magnetic properties, etc.; in terms of chemical properties It has the functions of catalysis, corrosion resistance and adsorption; in terms of biology, it has certain biocompatible properties and can be used as biological structural materials. But it also has Read more

Ceramic materials are typical hard and brittle materials. Before the mid-to-late 20th century, people thought that zirconia ceramic materials could not be processed or could not be processed, so they could only be processed into the desired shape when making green bodies, and then used directly after firing. The reason for removing the hard and brittle characteristics of the ceramic material itself is mainly due to the lack of machining tools and machining methods at that time. Although people have discovered superhard materials such as diamond and vertical boron nitride that are much harder than ceramic materials, the machining of ceramic materials has only been developed in recent decades. The Read more

Performance of zirconia ceramics: pure ZrO2 is white, yellow or gray when it contains impurities, and generally contains HfO2. Zirconia ceramics are a new type of ceramics. Because of their excellent physical and chemical properties, zirconia ceramics have not only become a research hotspot in the field of scientific research, but also have been widely used in industrial production. Zirconia ceramics have the best high-temperature thermal stability and thermal insulation performance, and are suitable for ceramic coatings and high-temperature parts. The thermal conductivity of zirconia ceramics is the lowest among common ceramic materials, and the thermal expansion coefficient is relatively close to metal materials. It is an important structural ceramic Read more

With the development of science and technology, the quality requirements of zirconia toughened alumina products are higher and better, so the products have certain friction during preparation, which is what we call friction theory. The following will introduce the friction theory in detail: 1. Zirconia toughened alumina adhesion theory: The adhesion theory of zirconia toughened alumina believes that under a certain pressure, when zirconia toughened alumina is dry rubbed, it will generate instantaneous high temperature, sometimes even more than 1000e, which will cause zirconia toughened alumina to produce a certain degree of damage. Plastic deformation, the two objects will stick together. Its friction is a pulsating process in which sticking Read more

Special ceramics, also known as fine ceramics, are classified according to their application functions and can be roughly divided into two categories: high-strength, high-temperature-resistant and composite structural ceramics and electrical and electronic functional ceramics. Inorganic materials with special formula are added to the ceramic blanks, which are sintered at a high temperature of about 1360 degrees to obtain stable and reliable anti-static properties and become a new type of special ceramics, which usually have one or more functions, such as: electricity, magnetism, Optical, thermal, acoustic, chemical, biological and other functions; and coupling functions, such as piezoelectric, pyroelectric, electro-optical, acousto-optical, magneto-optical and other functions. At present, special ceramics have been widely Read more

To study the influence of porosity on thermal properties such as thermal conductivity of ceramic materials, it is necessary to prepare a series of samples. Porosity is the only main variable parameter in the product. This requires: the zirconia and alumina ceramic raw materials used between the samples are the same; the shape, size, orientation and other factors of the pores are roughly the same. It should be admitted that it is quite difficult to control the shape and size of the pores in the sample. Start from an angle, such as: Control the particle size of the added organic matter. Pass the organic matter (naphthalene powder) through two different Read more