Pressure gauge block sand platform as the only repair of measuring instruments, it will directly affect the amount of the block repair quality. Pressure sand platform common set of several materials: high-phosphorus alloy, ductile. 
 The need for a gauge block or a few repair pressure is very effective pressure sand sand platform. The so-called pressure effect referring to the sand: 
 1, embedded in sand is good, flat easily embedded sand, firmly embedded in the sand, and durable. 
 2, pressure sand process simple and easy to operate. 
 3, sharp cutting wear. 
 4, the block repair is easy to achieve the required amount of surface roughness. Gauge block repair needs in seconds or tens of seconds to complete flatness, surface roughness, the amount of change in the length of the center, and several other technical indicators. Repair pressure gauge blocks used in the sand flat amount of a direct impact on the quality and efficiency of the repair blocks, so the pressure of pressure sand flat sand is very important. 
 Pressure sand platform to test a variety of precision surface of the other parts (light-gap method), repair of a variety of gauge blocks, work card, measuring tools, optical and other precision parts and other pieces of the flatness of a tool 
 Pressure sand platform according to JB / T7974-99 standards for manufacturing, mining useful for face grinding process for grinding parts, measuring the repair of this product after grinding of the workpiece surface roughness Ra ≤ 0.08μm. 
 Pressure sand platform specifications: 100 * 100 200 * 100 200 * 200 300 * 200 300 * 300 400 * 300 400 * 400 450 * 400 500 * 300 500 * 400 600 * 400 600 * 450 600 * 500 600 * 300 
 Pressure sand platform is divided into 14 different specifications of different 0, 1, 2. 

 Working flat fire (fire work platform) main role is in the fire and water processing, hosting, and fixed processing requirements are curved hull steel plate and steel parts. 
 Working flat fire (fire work platform) to form smooth, accurate size, internal free of all defects, with sufficient strength and rigidity to withstand the fire power hammer percussion work, production work to meet the needs of the fire.