What are the common electrode paste sintering processes?

The sintering process of electrode paste in electric furnace is one of the key factors determining electrode performance and production efficiency of calcium carbide furnace. In order to ensure that the electrodes have ideal conductivity, mechanical strength, and oxidation resistance, it is necessary to use appropriate sintering processes to treat the electrode paste. This article will briefly introduce several common electrode paste sintering processes.

Conventional Sintering
Normal pressure sintering is the most basic sintering process, which involves heating the electrode paste to a certain temperature under normal pressure, causing it to undergo solid-phase reaction and form a dense electrode structure. This process is simple and easy to implement, but the sintering speed is slow, and the density and performance of the electrodes may be limited.

Vacuum Sintering
Vacuum sintering is a sintering process carried out at lower pressure, which can reduce the porosity in the electrode paste, improve the density and conductivity of the electrode. Due to being carried out in vacuum, the oxidation of the electrode by air can be avoided, thereby improving the antioxidant performance of the electrode.

Hot Press Sintering
Heating pressure sintering is the process of applying pressure to the electrode paste while heating to promote its sintering process. This method can significantly improve the density and mechanical strength of electrodes, but requires specialized equipment and higher process requirements.

Hot Isostatic Pressing
Hot isostatic pressing sintering is a sintering process carried out under high temperature and pressure, which can achieve uniform shrinkage and comprehensive densification of electrode paste. This method can prepare high-density and high-performance electrode materials, but the equipment investment and operating costs are high.

Atmosphere Protection Sintering
Atmosphere protected sintering refers to sintering in a specific atmosphere (such as inert gas or reducing gas) to prevent electrode paste from being oxidized at high temperatures. This process helps to improve the oxidation resistance of the electrode, while also improving the overall performance of the electrode.

Microwave Sintering
Microwave sintering is the use of microwaves to heat electrode paste and rapidly raise it to the sintering temperature. This process has the characteristics of uniform heating and fast speed, which can effectively shorten sintering time and improve production efficiency.

Different electrode paste sintering processes have their own advantages and limitations. Choosing a suitable process requires consideration of factors such as the composition of the electrode paste, required electrode performance, production costs, and equipment conditions. As a leading enterprise in the electrode paste industry, Zhengshan Technology continuously explores and optimizes sintering processes to meet the market demand for high-performance electrodes. Through continuous technological innovation and process improvement, Zhengshan Technology is committed to providing customers with higher quality products and services, helping to improve the production efficiency and economic benefits of industrial electric furnaces such as calcium carbide furnaces.