Analysis On Mechanical Properties Of Hot Dip Galvanizing Equipments And Regional Safety Factors Of Zinc Pot

Continuous hot-dip galvanizing process is one of the most widely used and effective corrosion protection technologies for steel products.Its products are widely used in automobiles,electrical appliances and buildings.Zinc pot galvanizing equipment is the most important part of continuous hot-dip galvanizing process.Galvanized equipment includes sink roll,stabilizer roll,correction roller,roll support and sliding bearing connected with backup roll.The mechanical properties of these parts will directly affect the quality and efficiency of production.There are many unsafe factors in the zinc pot area,such as high temperature and vibration.In the pursuit of quality and efficiency,safety problems will often lead to serious accidents if they are ignored.This paper makes the following work around the zinc pot safety in the zinc pot area:1.This paper describes the function,structural features and design concept of galvanized core equipment,and analyzes the possible weak links of galvanizing equipment from the aspects of design and structural features;Combined with the complex zinc plating environment,the factors causing the safety accidents of zinc pot area are identified by using tabular analysis and causal analysis,and further research is made on the two main factors of high temperature and vibration.2.A finite element model is established to simulate the temperature distribution of the local space centered on the zinc pot,and the temperature value of each point is obtained。Meanwhile,establish a finite element model of roller bearing for the hot dip galvanizing to study the stress and strain in the molten zinc environment,and to analysis the influence of different reserved clearances on the axle sleeve and neck in high temperature environment.3.The vibration of galvanizing equipment is studied,and the stress of the sink roll and its roll arm of the core equipment are analyzed,decomposed and synthesized;the mathematical model of the roll arm and sink roll vibration system was built to calculate the natural frequency,and then the natural frequencies were verified by the finite element method;design a pull rod which can enhance the rigidity of the roller arm aimed at stress characteristics.4.Experiments were carried out to study the vibration situation of galvanizing equipment based on the theoretical analysis and the finite analysis.The vibration signal acquisition system of galvanizing equipment have built,and the vibration signals of different positions and different directions of the roll stand of the galvanized equipment are collected in the field.The original vibration signal of each detection point is processed correspondingly,and the amplitude frequency curve is obtained,and the outstanding frequency components of vibration signal are analyzed and summarized.