Hot-dip galvanized coil processing will be part of the lubricant remains in the inner and outer surfaces, hot dip galvanized after annealing in the formation of carbon spiral surface in 1980 has experts on the surface of carbon galvanized spiral done a lot of research, the carbon galvanized tube life will be adversely affected. Although the carbon steel pipe service life thereafter on the degree of influence as well as quantitative indicators carbon effect no final conclusions, but harmful carbon film on hot-dip galvanized coil has agreed, in order to eliminate the carbon surface of the tube, skim become hot an essential part of galvanizing process.
Sawing process for producing interrupt cutting die head, cut head and tail and local defects on the finished product. With the use of the product requirements gradually increased, the quality of some products have been speaking out sawing up to 1mm density within it. Slope of the finished cut sawing and cutting burr in the standard has a corresponding provisions should pay attention when cutting. Semi-finished products after sawing, should remain in the wall inside the sawdust to clean up.
Factors affecting the quality of hot-dip galvanizing: Operating speed: When immersed steel workpiece and personnel should ensure that the premise of safety as fast as possible, this will ensure that each part of the whole galvanized thickness of the film are the same, according to the steel lifting speed structure, material, and the use of different lengths at different speeds, in general lifting speed of 1.5 m / min can ensure better surface brightness and zinc reflux.
Tooling used: hot dip galvanized tooling for galvanizing process is very important, a good tooling can greatly improve the yield and quality, but the tooling design depends on the type of galvanized and therefore require site design, tooling design should take into account the production capacity, steel shapes, sizes and technical requirements of customers.
Cooling passivation: hot dip galvanized steel in the sink after doing the cooling process, the cooling water is usually tap water, steel zinc pot from hanging out as soon as possible after cooling, the workpiece can be maintained without distortion. Optimum temperature should be between 30 ° -70 °, can be added to the water amount of surface active agent, to improve the surface gloss of steel.
Renovation Inspection: good-plated parts in accordance with the requirements and standards (national standard GB / T 13912-2002) for thickness and appearance inspection, will be attached to the surface plating zinc ash, zinc dross and other polishing, hot dip galvanized coil meet the requirements to cross the detection plant.
Udehra Mechanical Works is among the best fastener manufacturers of India. We manufacture wide range of Hot dip Galvanized Hex Nuts and Bolts which can be electroplated with zinc, galvanized in hot dip and plated with cadmium.
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