How to distinguish the good and bad galvanized steel
Usually galvanized steel is a steel plate with a layer of zinc plated on the surface, which is used as a method of rust prevention, so what matters should be noted when welding galvanized steel?
Protective measures for welded galvanized steel sheet.
1. Welding galvanized steel pipe to ensure the quality of the product, that is, in the factors of personnel to control, which is a key point, should choose skilled, holding a welder's certificate of welders, the necessary technical training, handouts. And shall not be replaced at will to ensure that the welding of the pipeline welders are relatively stable.
2. Control of welding consumables, to ensure that the purchase of the regular channels of welding consumables, quality assurance certificate, certificate of compliance, in line with the process requirements; welding rod head recycling control strictly to ensure the flow, dosage; welding consumables to be strictly baked in accordance with the process, and a release of no more than half a day's dosage.
3. Welding machine, welding machine shall ensure reliable performance, in line with the needs of the process; welding machine must have a certified ammeter, voltmeter, to ensure the correct implementation of the welding process. Welding cable can not be too long, longer to adjust the welding parameters.
4. Welding process methods to ensure the strict implementation of special operating methods for galvanized pipes, welding process for pre-welding bevel inspection, welding process parameters, operational practices control, post-welding appearance quality inspection, and if necessary, increase post-welding nondestructive testing. Control the level of welding, the amount of welding material per port. Fifth is the welding environment control, to ensure that the temperature, humidity, wind speed when applying welding in line with the process requirements.
Application of galvanized steel sheet.
1. Pipe for thermal engineering equipment. Such as: boiling water tubes and superheated steam tubes for general boilers, superheated tubes for locomotive boilers, large smoke tubes, small smoke tubes, arch brick tubes and high temperature and high pressure boiler tubes, etc.
2. Pipe tubes. Such as: seamless pipes for water and gas pipes, steam pipes, oil transmission pipes, and pipes for oil and gas trunk lines. Agricultural irrigation taps with pipes and sprinkler irrigation pipes, etc.
3. Pipe for machinery industry. Such as: aviation structural tubes (round tubes, oval tubes, flat oval tubes), automobile semi-axle tubes, axle tubes, automobile tractor structural tubes, tubes for oil coolers of tractors, square and rectangular tubes for agricultural machinery, tubes for transformers and tubes for bearings, etc.
Identification of galvanized steel.
How to identify good and bad galvanized steel? However, as the market becomes more and more competitive, many galvanized steel manufacturers damage customers' interests with substandard products in order to reduce production costs. The quality of galvanized steel is definitely one of the things we need to take seriously. To identify its quality, we need to check the quality of the materials used in the production of this galvanized steel and whether the treatment process used meets the requirements. The amount of galvanization is directly related to its anti-corrosion ability, and the amount of galvanization can extend the service life of galvanized steel. Galvanized steel pipe production, there will be a galvanized process, in the appearance of a good aesthetic concept, from the quality of a good protection. However, a little understanding of the galvanized steel pipe industry know that any metal stored in the usual environment will appear moldy, rusty situation, if you want to slow down the moldy galvanized steel pipe should be reasonable storage, usually in a ventilated and dry environment, because the metal encounters the water in the air, more than a period of time will appear rust is oxidation. So how to solve this problem from the Kenburn, that must be considered from the beginning of steel plating. Generally speaking, hot-dip galvanizing process products than electro-galvanized steel pipe is relatively less susceptible to oxidation, because the hot-dip galvanizing process is a thicker layer of zinc on the surface of the strip, even if the production of Connie White will not affect the normal use. In our current living environment galvanized steel tubes are more and more widely used, and according to the continuous improvement of the standard of living the latest galvanized steel tube types are more and more, we can choose according to their own needs when choosing, but no matter how the type of galvanized steel strip changes, we still need to know how to protect the galvanized steel strip from oxidation when using.
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