The main beam of single beam crane is not smooth, which directly affects the subsequent processing. First, we will deal with the flatness of the main beam before moving on to the next process. Then the time spent sandblasting and plating will make the product whiter and flawless. However, the structural characteristics of the main girder of different bridge cranes are different. We must first understand the following two points of the product:
Handle single beam lifting main beam material and plate shape. (Plate, roll, special-shaped piece, ruler)
The size of the main girder and the surface of the single girder crane (depending on the product, different flatness processes can be selected to achieve cost and operability control), what leveling effect the main girder is to achieve, and the working environment of the beam. And the use requirements (directly with the appearance or in the use of dust and high humidity environment)?
At present, there are two ways to deal with the flatness of the crane girder (gantry crane manufacturer)
The use of professional mechanical treatment is a smooth surface polishing method by cutting and plastic deformation of the material surface to remove polished convex parts, and usually using grindstone, polishing fluid, etc.
Chemical polishing, chemical polishing is to make the data in the chemical medium, the local convex of the microscopic convex part preferentially dissolved, so as to obtain a smooth surface. The main advantages of this method are that complex workpieces can be polished without complex equipment and many plates can be polished simultaneously. The problem with chemical polishing is the application of polishing fluid and product materials. The surface roughness obtained by chemical polishing is usually 10μm.