The difference between sponge sandpaper and ordinary sandpaper
Sponge abrasive blocks can be made in a variety of shapes and sizes. Sponge mill block is suitable for hand-polished furniture, plastic product surface polishing, automotive repair paint at the polishing, metal rust and plastic surface treatment, with water, acid and alkali resistant and other significant features. Features: soft dry grinding, wet grinding can be cleaned, can be reused.
Sandpaper is commonly known as sand skin. A material for grinding. Used to grind metal, wood and other surfaces to make it smooth and smooth. It is usually made of various kinds of abrasive grit on the raw paper. According to different abrasive materials, there are various kinds of emery paper, artificial emery paper, and glass sandpaper. Dry sandpaper (wooden sandpaper) is used to polish wood and bamboo surfaces. Water-resistant sandpaper (water sandpaper) is used to polish the surface of metal or non-metal workpieces in water or oil. All the raw paper was copied with unbleached kraft wood pulp. Paper is tough, wear-resistant, and has good water resistance. The ground material such as glass sand is adhered to the base paper with an adhesive such as a gum and dried.
Not the same way to use ~ the size is not the same ~ sponge sand is 120-180, 320-400 sandpaper is 400/600/800 like this. Sponge sandpaper is widely used as a metal abrasive tool in mobile phone shells, wood, sanitary ware, and mechanical polishing processes. Its components include: matrix, bonding agent and abrasive particles. Substrate: also known as the back base, is used to support the abrasive, and to provide a stable position of the components. It can be composed of many different materials. The most common materials are the following, paper, cloth (cotton, polyester or polyester cotton), rigid paper (vulcanized fiber), polyester film, paper / cloth composites, sponges and so on. The binder, also known as the binder, acts to hold the abrasive in place on the backing until the abrasive is lost. Abrasive: A cutting edge that forms a material for grinding, removing, or polishing. There are many different types of abrasives. For example, corundum or garnet are minerals that can be obtained from nature. However, today's coated abrasive products use more artificial abrasive particles such as alumina or silicon carbide. Compared with natural abrasive particles, artificial abrasives have higher grinding performance and are more quality-assured.
Transparent Roller Shutter Door
Material: polycarbonate (PC bulletproof plastic)
Using aluminum profiles for door connection piece, two-layer structure , special design ,embedded into the door sheet. Simple and elegant, strong resistance to stress.
The base is made of aluminum alloy, special design, corrosion-resistant simple and aesthetic.
Mute track is made of aluminum alloy, dual-slot design, the mute material can be embedded into the slot, and creating a quiet environment.
Control system : 24V DC , mute operation, safe and reliable , durable and long life . In the case of obstacles ,doors rebound or stop automatically stop during opening and closing process.
Door opening and closing process, lighting and delaying three minutes automatically ; users can switch to manual option when power failure, uninterruptible power supply . Please contact with our technical department for particular requirements.
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Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.hfautodoors.com