Oxidation Resistant Chain Boiler Grate manufacturers provide high-quality boiler parts, casting parts, and mechanical parts. They have always won unanimous praise from users for their high-quality product quality and high-quality service. Today, boiler parts manufacturers will share with you the reasons for the failure of the chain grate.
Material requirements are not high. In order to reduce the cost, the side sealing iron of Oxidation Resistant Chain Boiler Grate mostly adopts HT200, and its low heat-resisting temperature can easily cause high temperature burning and deformation of the chain. Due to the high temperature in the furnace, it should be made of heat-resistant cast iron. Such as RQTA122, the heat-resistant temperature can reach 1100 ℃ in the air furnace gas. The main chain of the grate should also be made of heat-resistant cast iron to ensure long-term good mechanical properties. The manufacturing accuracy of the grate is not high, and the error is large. As a quick-installed boiler, the flatness of the front and rear shafts of the grate affects the resistance of the grate and the average degree of stress, which is easy to cause the grate to deviate and break. When the grate deviates, there is no reference mark for adjusting the bolts on both sides, which will cause inconvenience to the user based on experience alone. The grate active sprocket tooling error is large, causing sprocket wear, grate tearing due to uneven force, arching, and grate shaft bending. The sprockets are not aligned uniformly when plunging the keyway or the assembly order is wrong, causing the sprockets to be out of sync. Due to the baking of the grate, the temperature at the air door is generally around 100°C. Affected by expansion and contraction, the parts are easily deformed, resulting in failures such as lax closing and inconsistency with the actual opening. The lubrication method of the front and rear axles needs to be improved urgently. The front and rear large shafts mostly use bearing sliding friction, lubricated with grease, generally composed of 4 to 8 oiling holes. Since the working temperature of the front and rear axles is around 100°C, ordinary calcium-based grease is easy to solidify, so temperature-resistant grease should be used. However, the oil path is too thin and too long, and it is still very difficult to refuel. Some Oxidation Resistant Chain Boiler Grate rooms try to use 30# oil cups instead. The current use effect is good, but the maintenance is improper during operation.
Many small faults are not found in time, and eventually lead to accidents. There is a problem with leadership management. If the specified type of coal is not used, so that the boiler is not suitable for burning coal, regular inspection and maintenance are not carried out, and the number of stoker operators is inappropriately reduced.