LAD glass tempering furnace is a specialized piece of industrial equipment designed to produce tempered or toughened glass. Tempered glass is a type of safety glass that is processed through controlled thermal and chemical treatments, making it stronger and safer than regular glass. There are a number of important considerations to be aware of when using a glass tempering furnace. These include questions about conveyors, magnetic clutches, heating times and quenching section rolls. These guidelines should be followed when using a glass tempering furnace to ensure safe and efficient production.
Watch Out For The Conveyors Device
Tempered glass fuel conveyors are designed to move glass plate loads in a stable and controlled manner. The length of the furnace should be equal to the length of the cooling section and the quenching section, so that the glass plate reaches the same stroke length during the quenching and cooling processes. During the loading process, the heated load of glass sheets is transported along a conveyor to the quenching unit. The quenching device is used to transfer the glass sheet load between the upper and lower sides of the nozzle. During the exponential cycle, the rollers on the upper bank are engaged with the drive chain, while the rollers on the lower bank are lifted into engagement with the drive chain during glass preparation for unloading. The conveyor is driven by a drive mechanism and includes elongated rollers. These rolls are mounted in an elongated furnace shell. The drive chain is connected to the roller end, which is supported by the direct part of the glass.
After the exponential cycle is completed, the conveyor remains in frictional contact with the drive chain. Drive chain driven switches for the loading and unloading stations of LAD glass tempering furnace. These switches determine how much the glass oscillates within the furnace, its acceleration and deceleration rates, and when an exponential cycle begins and ends. Tempered glass furnaces are usually equipped with a continuously acting conveyor that moves the glass sheets in an oscillating manner. This oscillation occurs as the glass sheet is heated, and it prevents the glass sheet from overheating.
Heating Time Of Tempered Glass Furnace
The heating time of a tempered glass furnace can be determined by several factors. The temperature of the tempered glass affects the energy consumption per square meter. Using a thermostat will help you determine the correct amount of time to heat your glass. If the temperature is too high, the glass may deform. To prevent this, adjust the temperature of the furnace so that the glass cools gradually. Tempered glass furnaces can increase the degree of tempering by reducing the thickness of the glass. Increasing the temperature will result in a greater difference in surface temperature between the glass and lining. When the glass is thin enough, the quench zone will be shorter.
Additionally, higher temperatures increase the strength of the glass. Glass two millimeters thick requires tempering temperatures above 640 degrees Celsius. In a roller hearth furnace, this temperature is too high. Higher temperatures result in more compressed glass surface, which provides greater strength. Roller hearth furnaces are the easiest to adjust because the heat is transferred directly to the glass. This type of furnace also provides a symmetrical temperature profile. When the temperature distribution is symmetrical, the glass maintains a straight shape in the furnace. This is because gravity tends to keep the glass in flat contact with the roller, and the thermal stress force must be greater than the gravitational resistance.
Problems With Quenched Profile Rolls
The use of rollers in the quenching section of tempered glass furnaces can cause problems. Typically, the roller cools the glass unevenly, resulting in a hazy surface and uneven quenching pressure. This in turn affects the appearance of the strain pattern. Rollers can also cause temperature issues. The wrong temperature can lead to premature fractures, especially at the edges. This reduces productivity and results in poorer glass quality. To prevent this, the quenching temperature must be controlled. Additionally, the rollers must have a proper spring tension to prevent the glass from deforming.
Moreover, poorly designed quenching fixtures or fixtures can also cause quenching distortion. For example, low-alloy steel has low yield strength at hardening temperatures and is prone to deformation under its own weight. Therefore, it is recommended to heat long parts in a vertical furnace and quench with vertical stirring in a clamp. A roller bottom tempering furnace includes a quenching section and a conveyor belt. It also includes a continuously oscillating blasting head and a rotary conveyor with separate doors. The blasting head is equipped with an air jet perpendicular to the curved surface of the glass. These air jets can be arranged into staggered parallelograms.
The quenching profile roller is an important piece of equipment in the glass tempering furnace. Rollers can significantly increase or decrease the load-carrying capacity of a heat-treated section. Rollers can also improve or decrease the optical quality of the glass. In addition to improving load-carrying capacity, the rollers prevent quench cracking and other problems. These problems are often caused by improper heat treatment processes, which can lead to part defects and quench cracking.
Keep The Temperature Constant
There are two common methods of heating glass in a tempered glass furnace. One type of furnace uses a continuous tempering line that moves the glass load in one direction. The movement speed of the entire furnace is consistent. Another type uses an oscillating wire that moves the glass load back and forth. When using convection blasting, the latter method is used. A common problem is the formation of a white haze on the surface of tempered glass. This is due to the high temperature in the low heating zone. To prevent this from happening, when the temperature of the upper layer increases, the temperature of the lower layer must be kept constant. Otherwise, scratches may appear on the glass surface.
When operating the tempered glass furnace, it is important to keep the temperature constant for a number of reasons. If the bottom temperature of the furnace is too high, the glass will take too long to heat. Another problem is that the ceramic roller swings too fast. This causes the edges of the glass to bend upward. The electrofusion method is the most energy-efficient method. It also eliminates the need for batches of material to be carried away in the exhaust. Additionally, electrofusion can produce products with thermal efficiencies of 70 to 80 percent compared to fossil fuel combustion, which requires at least 40 percent thermal efficiency. Electric furnaces are available as cold top furnaces or specialty furnaces. When using a tempered glass heater, keeping the temperature constant helps avoid a wavy pattern. This phenomenon occurs when the thickness of tempered glass is less than 3 mm. If the temperature rises above 640 degrees Celsius, the glass will develop a noticeable ripple pattern. This pattern is not a desirable quality for objects that require high strength. This problem increases with the thickness of the glass.