1. Strictly follow the computer program to start the operation, turn on the main heating power (one, two, three and four zone heating switches) respectively, and maintain the continuous heating time for 6 hours.Vacuum brazing of ceramic and metal materials That is: 150 degrees for 1 hour, 300 degrees for 1 hour, 450 degrees for 1 hour, 550 degrees for 1 hour, 700 degrees for half an hour, 800 degrees for half an hour, and 50 degrees per liter above 800 degrees for half an hour.Atmospheric Pressure and Vacuum Sintering of High Purity Dense MgO Ceramics 2.When the temperature of the quenching furnace reaches above 200 degrees, the furnace mouth cooling water should be turned on (consider saving water, as long as there is a small amount of flow, the water outlet should be 70 degrees)Applied Crack Repair Technology of Vacuum Brazing 3. When the temperature of the quenching furnace reaches above 300 degrees, the mesh belt operation is started.
The process of heat transfer through the furnace lining in an industrial furnace is that the heat of the hot flue gas in the furnace is transferred to the furnace wall through radiation and convection. In the furnace lining, the heat is transferred from the inner wall to the outer wall through conduction.Vacuum brazing of ceramic and metal materials When calculating the heat transfer of the furnace lining, in order to simplify the calculation, the following assumptions are generally made based on the actual situation: 1. The thermal conductivity of the furnace lining is stable, that is, the heat flow (or heat intensity) does not change with time; 2. The thermal conductivity of the furnace lining is one-dimensional. , that is, heat is only transferred along the normal direction of the isothermal surface; 3. The thermal conductivity of each layer of material is constant and equal to the thermal conductivity at the average temperature of the wall temperatures on both sides of each layer of material; 4. The contact between each layer So good that the contact surfaces of the two layers have the same temperature.Atmospheric Pressure and Vacuum Sintering of High Purity Dense MgO Ceramics When designing furnace linings, heat-resistant and insulating materials are generally pre-selected based on the operating temperature of the industrial furnace (hot surface temperature), and then the cold surface temperature is selected to determine the thickness of various materials to meet the system design requirements.Applied Crack Repair Technology of Vacuum Brazing Cold surface temperature is the most important variable that determines the economics of the entire furnace lining design. The selection of cold surface temperature should be determined based on comprehensive considerations such as reducing the heat loss of industrial furnaces and reducing production and infrastructure investment costs. Generally, the cold surface temperature of a continuously operating high-temperature industrial furnace is preferably 60 to 70°C. There are many variables involved in the heat transfer calculation of the furnace lining. In order to simplify the calculation, the concept of "thermal resistance" is introduced, thereby combining the two variables of the furnace lining thickness and material thermal conductivity into one variable.cnc-horizontal-metal-band-sawing-machine-gz4265
Push rod furnace, also known as push rod heating furnace, is a common industrial heating equipment. Its principle is to transfer high-temperature gas in the combustion chamber to the object to be heated through a push rod to achieve heating. This article will introduce in detail the working principle of the push rod furnace and its applications.Atmospheric Pressure and Vacuum Sintering of High Purity Dense MgO Ceramics 1. Working principle of push rod furnace The working principle of the push rod furnace is to use the push rod to transfer the high-temperature gas in the combustion chamber to the object to be heated, so that it reaches the required temperature. The push rod furnace is mainly composed of a combustion chamber, a push rod and a heating area.Applied Crack Repair Technology of Vacuum Brazing The combustion chamber is the core component of the push rod furnace, which generates high-temperature gas by burning fuel. The fuel in the combustion chamber can be natural gas, liquefied gas or solid fuel. When fuel burns in the combustion chamber, a large amount of heat energy is generated, which increases the temperature in the combustion chamber.Influence of Reaction Sintering Process on Properties of Silicon Carbide Ceramics The push rod is an important component that connects the combustion chamber to the heating zone. It is located at one end of the combustion chamber and transfers the high-temperature gas in the combustion chamber to the heating zone by pushing it. The material of the push rod needs to be resistant to high temperatures and corrosion, and is usually made of high-temperature resistant alloys or ceramic materials.vertical-band-saws
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