Comparison and analysis of roasted red light bulb and natural red light bulb
Infrared bulb according to the glass shell material is mainly divided into soft material and hard material two categories. The soft material glass shell expansion coefficient is high, hard material glass shell expansion coefficient is low. Generally speaking,the lower the expansion coefficient of the glass shell is, the safer the bulb is. Especially in low temperature and humid environment, the glass shell is not easy to burst when it meets water. Therefore, the bulb produced by hard glass shell has a higher safety coefficient than that produced by soft glass shell.
Usually, the expansion coefficient of the glass shell of the soft bulb is between 85 and 90, while that of the standard hard bulb is between 39 and 41. However, the expansion coefficient of the R125 semi-roasted red glass shell is between 46 and 48, and the explosion-proof effect is relatively poor compared to the standard hard glass shell, which is mainly caused by the limitations of the traditional red baking process. If the expansion coefficient is too small or the expansion coefficient is too large, the color of the red bulb cannot be achieved. Based on this, our company adopts a new formula and new production process to develop a new glass shell, the expansion coefficient is about 40, and the color and bulb rendering effect of the glass shell are better than the traditional semi-baked red bulb.
Formula and process description:
1）The traditional roasted red bulb lamps is coated with chemicals, coating containing silver nitrate, copper sulfate and kaolin on the top of the glass shell, after high temperature baking, annealing color forming, and then after manual cleaning to remove the residual powder coating on the top of the glass shell.
2） Preparing the red glass shell material: According to the proportion in the glass shell raw materials such as quartz sand and add various kinds of metal elements, stirring to mix, and then melt into liquid glass through furnace , and then send through the discharging mouth to the glass shell mould, blowing to shape, to form the finished glass shell, and annealing in the 30 meters long tunnel of annealing furnace. The secondary color appears on the glass shell during this process, and finally get the natural red glass shell out of the tunnel.