Sand blasting four ways: 1, the chemical descaling method: is the use of an acid and a metal oxide chemical reaction, thereby removing an efficient system of sand blasting method of corrosion products of the metal surface of sand, known as pickling rust, the rust can only operate in the workshop; 2, high-pressure water abrasive blasting: the use of high pressure water jet impact action (plus abrasive grinding action) and water to remove the system pry action rust and coating of sand on a steel plate. It features no dust pollution, no damage to steel, rust greatly improve efficiency, up to 15m2 / h or more, good quality rust. However, after the steel rust rust easily return shall be coated with a special paint wet rust Impact Sand manufacturers have a greater impact on the general performance of the coating of paint; 3, small pneumatic or electric rust: Main electrically or compressed air as power, blasting assembly appropriate means for reciprocating movement or rotational movement to suit the requirements of various occasions rust; 4, apply paint oxidation: iron products coated with mineral oil, paint or baked enamel, spray and so on. In the steel surface by plating, Redu the like rust coated with a layer of metal, such as zinc, tin, chromium, and nickel. The metal surface can form a dense oxide film, thereby preventing iron products and water, air and other substances in contact rust. Chemical methods can also be used to make iron products surface layer of dense and stable oxide film to prevent rusting iron products. To remind the user to use the equipment and idle time, maintenance and repair should be carried out, can not relax, good performance of the device is a symbol for the enterprise benefits. Crusher is a new high-efficiency crushing equipment, which is characterized by small size, simple structure, large crushing ratio (up to 40), less energy consumption river gravel crusher manufacturers, production capacity, uniform particle size and selective crushing basalt crusher equipment, it is promising device. But its biggest drawback is that hammer and counter plate special easy to wear, especially crushing hard ore, wear is more serious, need frequent replacement. At present, because some wear-resistant materials, and in some metal concentrator has been applied. River gravel crusher Introduction: river gravel crusher is suitable for crushing soft or medium hard and extremely hard materials, plastic, widely used in a variety of ores, cement, refractories, aluminum where the soil clinker, emery, glass raw materials, mechanism building sand, construction aggregate, artificial sand and all kinds of metallurgical slag crushing and coarse grinding operations, especially for silicon carbide, carborundum, sintered bauxite, the US high sand hard, special hard and corrosion-resistant material than the other higher type of crusher production efficiency. River gravel crusher features: small size gravel discharge, grain type uniform, large capacity, long life hammer, supporting small power, and change three fractured into two broken, process simplification, simple structure, easy maintenance, operation smooth. Equipment investment is lower than the same size of the traditional technique and equipment 35% -50% higher than the same scale output efficiency of traditional technique and equipment 35% -50%, with limestone as an example: one product size ≤5mm accounted for more than 85%. Run maintenance costs lower than the same size of the traditional technique and equipment 35% -50%, widely used mechanism for aggregate, cement, refractories, metallurgy, chemical and other industries. Large stone crusher, Dingwang machinery (certified), Sand provided by Ding Wang Machinery Co., Ltd., Henan Province. Machinery Co., Ltd., Henan Province, Ding-wang (www.hndwjx.com) is a leader in Zhengzhou, industry-specific equipment, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Dingwang machinery leadership with the staff warmly welcome all inquiries negotiations to create Dingwang machinery better future.