Hand polishing polishing, is still in the main polishing stage, although the robot polishing began to go on the normal, but the robot polishing covers a large area, so the general site of small factories have not adopted automatic polishing.
The process of polishing and polishing the bead by hand and the corresponding tools, what are the specific ones?
Of course, our main material is the welded steel pipe, the main purpose is to remove the traces of welding, it looks smooth and smooth.Second, achieve a mirror like effect.
Welding and polishing are usually done using an Angle grinder, and then the materials are really different.
Let's go through a few
The first one is "flap disc" : "flap disc" is a kind of abrasive material that arranges emery cloth sheets of the same size with resin adhesive. With the Angle grinder and the high-speed rotating blade, welding scar can be quickly removed, but its sharp grinding performance, in the hands of inexperienced workers, easy to cause excessive grinding of the product body, hurt the body, novice do not recommend to use, or welding scar grinding requirements of the best choice.
The second kind of nylon sheet: the overall material of nylon sheet, similar to fiber compound, the surface is not very hard, grinding particles coated on the surface, so that it does not lose its own softness, under the condition of grinding. Nylon chip grinding welding mark, has a good effect. Nylon sheet belongs to the adhesive - buckle grinding, with sanding machine, the effect is very good.
The third resin grinding plate, made of alumina and silicon carbide, has a strong grinding force, but its own consumption is also relatively fast. With the use of the Angle mill, high-speed rotation, so that it is fast consumption, easy to replace the mill.There are also some grinding wheel, sand belt, and other grinding welding tools.
Welding bead grinding, mainly is the material matching problem, the concavity of welding scar, when the product and other products cooperate, mutual can not be combined. And welding polishing, tools are generally manual use on two kinds, one is the Angle grinder commonly known as grinding machine, the other is sanding machine.
For the grinding of bend, resin wheel is generally selected. According to the inner bending Angle, the edge Angle of the grinding wheel can be filed accordingly, so that the edge Angle of the grinding wheel can fit the inner weld bead of the grinding material.
Then use a strip grinder to polish the area around the inner weld and the steel tube as a whole to remove impurities and noise.Make the whole material smooth and level.
Then use the handheld sand belt machine, using different size of sand belt, the initial to fine polishing process.
According to the different abrasive materials, we choose different grit sizes from 60-3000 mesh sand belts. Of course, we choose four grit sizes of 400, 600, 1200 and 2000 mesh for steel pipes.From small to large, from thick to thin.
After the finest sand belt is polished, the mirror effect is initially achieved, but you will find that the steel tube is not very clear, at most you can see a figure.Then use the final polishing step.
First of all, the cloth wheel plus polishing paste for the first cast.
Finally, the tape machine or need to use, according to the choice of material, if it is a flat place, choose sanding machine is better.For tubular materials, we use a strip grinder, a non-woven strip, and a polishing paste to continue grinding until the tube surface has a mirror-like sheen.
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