Sponge grinding block, in simple terms, is composed of sponge body, matrix (such as polyester film), binder and abrasive.The most outstanding characteristic is very good elasticity, so it is not easy to scratch the workpiece, and can change according to the shape of the workpiece and change, good at polishing a variety of irregular and complex machining surface of the workpiece.
In recent years, the sponge sand grinding industry has emerged with a high frequency, and many enterprises have been developing and producing continuously to make me better.If you look back on the history, 3M has done research and development and production for me early, and still occupies the position of the leader.In particular, the application of new abrasive, in the field of grinding performance is more excellent.
Although look from appearance, it is a common sponge, but the sponge material used is more special, the density is higher, need to reach 90 kg/cubic meter, at the same time need to have very good high resilience. The appearance is also full of abrasive, according to different grinding objects, abrasive can be white corundum, brown corundum, calcined abrasive, silicon carbide, ceramic abrasive and so on. Like sandpaper, according to the abrasive particle size, divided into coarse and fine three. According to the use, divided into dry grinding, water grinding, dry and wet dual-use three.
Before the sponge sandpaper, the polishing operation usually USES the traditional page-shaped sandpaper, although the effect is also good, but when the workpiece has a curved surface or dead Angle, the traditional page-shaped sandpaper can only look far away.In contrast, sponge sandpaper's softness and foldability can be applied to various shapes of workpiece.
There are more advantages, of course.
During manual polishing, the page-shaped sandpaper will give off a lot of heat due to friction. When the polishing master is handling the workpiece, it is not only easy to feel hot hands, but also easy to be cut. Because of the presence of sponge, it can play a good protective role, not only to protect the workpiece but also to protect the safety of the operator.
Sponge sand block can be reused, more energy saving and environmental protection. With the continuous progress of industrialization, there are factories for sponge sand block flocking, so it can be used with robot grinding machine.
Sponge sand block high sharpness, wear resistance, chip fast, elastic and flexible, strong water absorption, so the dry and wet grinding effect is ideal.
Compared with traditional water sandpaper.Sponge sandpaper can absorb water, and keep a long time with water grinding;The capacity of water storage can reduce the work load of washing water and removing debris, and the grinding efficiency can be improved. Comfortable hand feeling, reduce the labor intensity of the operator; Longer service life, reduce the cost of consumption.
Because sponge sand a series of advantages are widely used in furniture, plastic products, automobiles, metal, electronic products and other fields.
In recent years, the development of 3C industry is very rapid, such as mobile phone shell, digital products and other surface polishing demand is increasing, with the improvement of mechanized production degree, the market demand for sponge sand block will continue to increase.
With the progress of science and technology, the type of belt base and abrasive I use, the production process, and the binder of abrasive are constantly improving.