Galvanized P-shaped pipe (P-shaped steel pipe use: material for desk processing).
Galvanized P-shaped steel pipe processing plant.
P-shaped steel pipe manufacturers have strong customization capabilities.
There are two kinds of galvanizing methods commonly used in p-shaped steel pipes: cold and hot galvanizing, and for the production of p-shaped steel pipes, the two galvanizing methods are advantageous, as follows:
1. Surface smoothness: the appearance of cold-dip galvanized P-shaped steel pipe is smoother and better than that of hot-dip galvanized;
2. Corrosion resistance: hot-dip galvanizing is dozens of times that of cold-dip galvanizing, if the P-shaped steel pipe is placed in an ordinary environment, its hot-dip galvanized anti-rust layer can be maintained for more than 50 years without repair;
3. Operation method: hot-dip galvanizing is galvanized in molten zinc at 450-480 degrees, while cold galvanizing is galvanized by electroplating or other methods at room temperature;
4. Thickness of galvanized layer: the thickness of hot-dip galvanizing is much greater than that of cold-dip galvanizing, and the galvanized layer will form a special metallurgical structure, which can withstand mechanical damage during transportation and use;
5. Adhesion: The adhesion of cold galvanized is not as good as that of hot galvanizing. The hot-dip galvanized layer is metallurgically bonded with the steel and becomes a part of the steel surface, so the durability of the P-shaped steel pipe coating is more reliable;
6. Cost: hot-dip galvanizing is much higher than cold-dip galvanizing, but the cost of hot-dip galvanizing rust prevention is lower than that of other paint coatings;
7. Galvanizing position: cold galvanizing can be plated on only one side, and hot-dip galvanizing must be fully plated inside and outside. It is also because of the full plating that it can be fully protected even in depressions, sharp corners and hidden places;
8. Environmental protection: The solvents and diluents of the vast majority of cold-dip galvanized P-shaped steel pipes do not contain toxic ketones and halogenated hydrocarbons, so they play a more obvious role in reducing the three wastes, reducing energy consumption and improving the social benefits of environmental protection.
This scheme is implemented by using the following technical measures. Mainly by graphite core 1 0 and graphite mould 1 and the upper part thereof surrounds the cooling sleeve 3 and protective sleeve 2 that have water inlet pipe 8, outlet pipe 7, the characteristic of this scheme is that, the cross-section of described graphite mould 1 inner cavity and the cross-section of graphite core 10 are square, and correspond with the square tube cross-section that is produced, and there are at least two evenly distributed liquid inlet holes 9 processed below the lower protective sleeve 2 of graphite mould 1; And in the water cavity of described cooling jacket 3, the top processing with graphite mould 1 has equalizing groove 4 and is connected with water inlet pipe 8, there is diaphragm 5 in middle part of equalizing groove 4, this diaphragm 5 processes at least six evenly distributed water holes 6, is connected with spiral waterway 11 at the bottom of equalizing groove 4, in addition, the inner wall containment surface of cooling jacket 3 cross-section above graphite mould 1 top is similar to the cross-section of graphite core 10. This scheme also has the following specific characteristics, that is, the liquid inlet hole 9 is 8. And described water passing hole 6 is 18.
The hole shape of the cooling jacket that this scheme adopts in the upper part of the graphite mold is similar to its casting billet, and the water inlet pipe of the cooling jacket is directly connected with the equalizing groove in the sleeve again, the cooling water flow rate is uniform, and the spiral waterway is connected under the equalizing groove again, and the flow of cooling water has been lengthened, the utilization of cooling water has been improved, the cooling effect has been enhanced, and the production speed has been improved. Thus the utility model discloses a utility model compared with the prior art, and its effect is obvious.