We often encounter two purchasers of the same company when negotiating business with us. Purchasers a will call the products to be purchased hot-dip galvanized bolts, while purchasers B will call the products of the same batch of specifications hot-dip galvanized bolts. Finally, when the system is merged, it is found that different product and material names appear in the purchase list of the same batch. When entering information, which one will prevail? What is the difference between hot dip galvanizing and hot dip galvanizing? If we don't make it clear, if there is a problem in mass use, it will be a great responsibility. Today we will explain it in detail, so that we can clearly know what is hot-dip galvanizing treatment and what is hot-dip galvanizing treatment.
These two different appellations have the same essential meaning! It's the same! It's the same! The important thing has been said three times, but why are there two versions of different names? We also said that the essence is the same, but the details are different, so there are two different versions. Just like houses, they can be called commercial houses. However, some of them have 70 years' property rights and some have 40 years' property rights. Although they are called houses, they are very different. The nature of land is also very different. So the difference between hot-dip galvanizing and hot-dip galvanizing is almost the same.
Bolts that have been hot-dip galvanized or hot-dip galvanized can be called hot-dip galvanized bolts or hot-dip galvanized bolts. However, we are used to calling grade 8.8 bolts hot-dip galvanized bolts. This is because bolts with different materials have different pickling requirements during hot-dip galvanizing treatment, and the temperature in the molten pool is different. While the temperature in the molten pool of grade 8.8 hot-dip galvanized bolts is 600 degrees, We will call the bolts processed in the 600 degree bath hot-dip galvanized bolts.
As for hot-dip galvanized bolts, it refers to grade 4.8 bolts. It is also because of different materials. During Hot-Dip Galvanizing of grade 4.8 bolts, the pickling time of bolts is shorter. The temperature in the molten pool is lower than 600 degrees, about 550 degrees. We call the products in this environment hot-dip galvanized bolts. Except for temperature changes, other processes are exactly the same. Therefore, the editor said that the essence is the same, Users don't have to worry about what it is called when purchasing. In the final analysis, it is just a habitual name.
Whether it is hot-dip galvanizing treatment or hot-dip galvanizing treatment, the installation quality and anti-corrosion performance are the most critical. It doesn't matter what it is called. The installation quality is related to the friction coefficient of hot-dip galvanized bolts. What is the coefficient of friction? When you use hot-dip galvanized bolt products, you will encounter a kind of situation, that is, in the process of repeated use of hot-dip galvanized bolts, the zinc layer on the thread will be less and less, and some of them will be used only a few times, and they will be directly rubbed. Then the adhesion strength of the zinc layer is the friction coefficient. There is no upper limit for the friction system of hot-dip galvanized bolts. The stronger the better, that is to say, it is best to use it all the time without wear. Of course, it is impossible.
Apply a certain torque to the hot-dip galvanized bolt, and then connect it with the base body. The torque can be controlled to lock the bolt and remove it. The torque is also proportional to the friction coefficient of the hot-dip galvanized bolt. Therefore, this is very important. If you keep screwing, which far exceeds the bearing capacity of the bolt, the friction coefficient will obviously decrease after two or three times of use. The friction coefficient test of hot-dip galvanized bolts is mainly to ensure that the tensile strength and the use cost of the bolts are controllable in use, and to monitor whether the strength of the bolts may decrease after hot-dip galvanizing. Only in this way can the quality of each batch of hot-dip galvanized bolts be guaranteed to be qualified.
