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  • 抛丸机的工作条件与效率
  • 本站编辑:杭州伟国型钢有限公司发布日期:2019-03-18 21:19 浏览次数:
目前抛丸机作为一种在材料表面进行打磨、抛光等处理应用的最为广泛的一种机械,他的工作条件与效率以及除锈等级并未被大家广泛了解,杭州伟国型钢有限公司小编就为大家分享一下,希望对大家有所帮助。
 
1、 工作条件
 
(1)工作面不平整度<20mm;无积水并相对干燥;坡度<25°
 
(2)环境温度:-20℃~60℃;钢板表面温度大于露点3℃以上
 
(3)湿度:a、钢表面抛丸时相对湿度不大于90%
 
b、混凝土抛丸时相对湿度不大于95%
 
(4)海拔:0~3000m;不得在雨雪天气中操作
 
2、工作效率
 
水泥表面:工作效率:200-400平方米/小时
 
在钢板上工作:钢板质量等级SA2.5到SA3速度:SA2,5约4米/分钟;速度:SA3约3米/分钟,每小时处理面积:SA2,5级,约75-100平方米/小时
 
除锈等级
 
国家标准GB8923—88《涂装前钢材表面修饰等级和除锈等级》将抛丸机除锈等级分成四个等级,用字母“Sa”表示。
 
Sa1轻度的喷射或抛射除锈。钢材表面无可见的油脂或污物,没有附着不牢的氧化皮、铁锈和油漆涂层等附着物。
 
Sa2彻底地喷射或抛射除锈。钢材表面应无可见的油脂和污垢、氧化皮、铁锈等附着物已基本清除,其残留物应是牢固附者的。钢材表面均匀布置抛丸后形成的抛射凹痕,抗滑移系数达到0.35~0.45
 
Sa2.5非常彻底地喷射或抛射除锈。钢材表面应无可见的油脂、污垢、氧化皮、铁锈和油漆涂层等附着物,任何残留的痕迹应仅是点状或条状的轻微色斑。钢材表面均匀布置抛丸后形成的抛射凹痕,抗滑移系数达到0.45~0.5
 
Sa3使钢材表观洁净的喷射或抛射除锈。钢材表面应无可见的油脂、污垢、氧化皮、铁锈和油漆等附着物,该表面应显示均匀的金属光泽。

Atpresent, shot blasting machine is one of the most widely used machines for polishing and polishing the surface of materials. Its working conditions, efficiency and derusting grade are not widely understood by everyone. The small editor of Hangzhou Weiguo Steel Co., Ltd. will share it with you, hoping to help you.

1. Working conditions

(1) the working face roughness < 20mm;; No accumulated water and relatively dry; Slope < 25

(2) ambient temperature:-20 ℃ ~ 60 ℃; The surface temperature of the steel plate is more than 3 ℃ above the dew point.

(3) Humidity: A. The relative humidity of steel surface during shot blasting is not more than 90%

B, concrete shot blasting relative humidity is not more than 95%

(4) altitude: 0 ~ 3000 m; Do not operate in rainy or snowy weather.

2. Work Efficiency

Cement surface: working efficiency: 200-400 square meters/hour

Working on steel plate: steel plate quality grade SA2.5 to SA3 speed: SA2,5 about 4m/min; Speed: SA3 is about 3 meters/minute, and processing area per hour: SA2, Grade 5, about 75-100 square meters/hour

Rust removal grade

The national standard GB 8923-88 " steel surface modification grade and derusting grade before coating" divides the derusting grade of shot blasting machine into four grades, which are represented by the letter " Sa".

Sa1 Rust removal by slight spraying or throwing. There is no visible grease or dirt on the surface of the steel, and there is no loose scale, rust, paint coating and other attachments.

Sa2 is thoroughly sprayed or jetted to remove rust. Steel surface should be free of visible grease and dirt, scale, rust and other attachments have been basically removed, and the residue should be firmly attached. Projecting dents formed after shot blasting are uniformly arranged on the steel surface, and the slip resistance coefficient reaches 0.35-0.45

Sa2.5 rust removal by spraying or throwing is very thorough. Steel surface should be free of visible grease, dirt, scale, rust, paint coating and other attachments, and any residual traces should be only spot-like or strip-like slight color spots. Projecting dents formed after shot blasting are uniformly arranged on the steel surface, and the slip resistance coefficient reaches 0.45-0.5

Sa3 Spray or Projecting Rust Removal to Make Steel Apparent Clean. Steel surface should be free of visible grease, dirt, scale, rust, paint and other attachments, and the surface should show uniform metallic luster.

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