What is the principle of high temperature sintering furnace?
Oct 18,2024
Cemented carbide sintering principle: the binding phase, metal (Co, Ni)-based, also known as cermet materials, ceramic phase (TiC, TaC, NbC) as a benchmark, the temperature is higher than the binding phase, integrated, to achieve this purpose of the process called sintering process.
The high-temperature sintering furnace is mainly used for the sintering of ceramic powder, ceramic core and other zirconia ceramics. The sintering of diamond saw blades can also be used for copper, strip steel annealing and other heat treatments.
The high temperature sintering furnace can also be used for high temperature sintering and heat treatment of thick film circuits, thick film resistors, electronic component electrodes, LTCC, steel heaters, solar panels and other similar products.
High temperature sintering furnace is mainly used in iron and steel industry, metallurgical industry, new material industry, etc.
The core of microwave high temperature sintering furnace technology is the principle that microwave generates electronic polarization, atomic polarization, interface polarization, dipole rotation polarization, etc., and converts the electronic energy of microwave into heat energy. Obviously, not all materials are microwave heated. According to the action characteristics of substances and microwaves, substances can be divided into three categories (1) transparent type. Mainly can be divided into low loss insulators (such as most polymer materials and some non-metallic materials). Partial reflection and partial penetration of microwaves are allowed, and microwaves are rarely absorbed. This material can be in the microwave field for a long time, the heat is very small (2) completely reflective, mainly conductive metal materials, the reflection coefficient of microwave is close to 1, can only penetrate a very small amount of incident microwave, can be used as microwave heating equipment waveguide, microwave cavity, mixer, etc. (3) Absorptive type, mainly dielectric materials between metals and insulators, including textile fiber materials, paper, wood, silicon carbide, zirconia, phosphors, ceramics, water, paraffin, etc. Microwave sintering technology is mainly applied to ceramic materials and metal powder materials. The characteristics of microwave sintering technology Microwave heating has the characteristics of integrity, transient, selectivity, environmental friendliness, safety and energy saving. Microwave is a clean energy used in microwave sintering, which has become a research hotspot in the material industry and has triggered a revolution in the field of sintering technology.
What are the characteristics of microwave high temperature sintering furnace?
1. The sintering temperature can be greatly reduced to 500.
Dramatically reduce energy consumption, saving up to 70% to 90% of energy;
The sintering time is shortened to more than 50%.
4. Greatly improve the tissue density, refine particles and improve material properties.
The process is accurate and controllable. Good product consistency and stable quality.
When high-temperature sintering furnaces heat and sinter metals, ceramics and some undissolved metal intermediate compound powders in a vacuum and protective atmosphere, two processes are generally used to obtain materials with certain density and mechanical characteristics. That is, there is pressure sintering and pressureless sintering. The pressure sintering process is to place the powder material in a high-carbon mold in a vacuum and protective atmosphere, and apply pressure when heated to a softened state at high temperature. This process requires vacuum hot press sintering to achieve. This sintering furnace has the characteristics of high temperature, high vacuum degree and high hot pressing force.
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