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　　1、 Real situation of customers

　　The thickness of the workpiece is about 14mm, and the requirement of surface finish is Sa2.5.

　　Steel pipe thickness 14mm, diameter 2.8m

　　2、 Recommended formula of Hongxin steel pill

　　The use of alloy steel shot S330: water chestnut steel sand G25: steel wire cutting shot 1.5mm = 3:3:2 ratio can achieve the effect of sand cleaning and rust removal, while saving costs.

　　Technical scheme of sandblasting room: 1. Use alloy steel shot S330: water chestnut steel sand G25: steel wire cutting shot 1.5mm = 3:3:2 ratio, which can achieve the best effect of sand cleaning and rust removal, and can save costs. The cost of rust removal for each ton of steel is less than 6 yuan.

　　Shot characteristics: mainly to control the surface finish

　　Hongxin steel shot S280 alloy cast steel shot has the advantages of fast cleaning speed, good anti elasticity, long service life and low consumption; the hardness of the shot is moderate, toughness is good, and it can be recycled; the strict quality management process enables the shot quality to achieve the best effect. Applicable equipment includes: q3110 roller shot blasting machine, q326 crawler shot blasting machine, Q378 hook shot blasting machine, large through shot blasting machine, steel plate pretreatment line, cleaning of sand blasting room, etc.; the company's products are carefully protected by double-layer coating, moisture-proof, waterproof and anti-corrosion packaging bags.

　　Characteristics of steel wire shot cutting: mainly to control the surface roughness

　　Hongxin steel shot 1.5 steel wire cut shot has high wear resistance, no dust, long service life, strong pressure resistance, and can be recycled for more than 2000 times. Suitable for steel plate pretreatment line, through shot blasting machine, Q37 hook shot blasting machine.

　　Characteristics of steel sand: mainly to control the surface roughness

　　Hongxin steel shot angular steel sand is made of broken alloy steel shot, hypereutectoid steel angular, polyhedron; it is made of special heat treatment grinding, with high hardness, strong toughness, strong impact resistance; angular steel sand can be used repeatedly, with strong adhesion, and the workpiece is cleaned thoroughly; angular steel sand has tight metallographic structure, and always keeps angular in the process of sandblasting.