Preparation and protection measures before sand blasting
When the sand blasting machine is working, if the air pressure is 5-6 kg/cm2, the sand diameter is 1.5 mm, the reasonable injection angle is 45-60°, and the optimum distance from the nozzle to the processing surface is 120-150 mm. . When the sand blasting machine is working, if the air pressure is 5-6 kg/cm2, the sand diameter is 1.5 mm, the reasonable injection angle is 45-60°, and the optimum distance from the nozzle to the processing surface is 120-150 mm. . In actual operation, the working pressure and the surface of the treated surface should be properly controlled, but the distance is generally not less than 80 mm and the injection angle is not less than 30%. In short, the surface of the metal treated by the sand blasting machine is required to show a uniform metallic color, and the rust and other deposits should be removed to keep the surface dry and clean. Generally, 8 hours after sand blasting, the surface protective layer must be painted to prevent the workpiece from rusting. In wet weather and areas, the surface protective layer should be painted in time to ensure the quality of anti-corrosion construction. PPGI Corrugated Sheet,Corrugated Roofing Sheets,Galvanized Corrugated Sheet,Clear Corrugated Roofing Sheets SHAOXING YOTO IMPORT&EXPORT CO., LTD , https://www.sxytmaterial.com
Safety and labor protection measures of sand blasting machine The most important point in the operation of sand blasting machine is to prevent dust. Especially dry blasting machine should adopt reliable labor protection equipment to ensure the health of the operator and prevent it. There are several ways to dust, you can refer to:
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1. The dust mask is a filter type half mask respirator which protects the appliance. It is suitable for use in silicon dust and other non-toxic dust operations. The structure is as shown in the figure below. During the use, it is necessary to pay attention to timely replacement of the intermediate filter paper (because filter paper is the most important dust-proof material) to maintain dust removal efficiency before use and use. After cleaning, the masks are made of plastic, so it is necessary to avoid high temperatures during storage. It is required to be below 30 degrees, and it is strictly prohibited to roast or expose to the sun.
The main features of the mask are high dust resistance, low respiratory resistance, light weight and small dead space. It has little influence on the lower field of view and is comfortable to wear. It can protect the silicosis and other pneumoconiosis diseases. Some of its main indicators have reached the advanced level at home and abroad.
In the blasting operation, in addition to the above masks, head protective clothing must be worn. The protective clothing is made of canvas and has a glass piece in the eye part for the operator to observe the workpiece. In order to protect the eyes from the dust, use scissors to cut off the nose and mouth, and then put on the dust mask and protective clothing to ensure that the head and upper body are not affected by sand and dust.
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2. The mask with the air distributor is blown from the head of the mask by the clean air, so that the inside of the mask is kept positive, so that the silicon dust cannot enter, and the effect is good. The shortcoming is that the incoming air is blown directly on the head, and it is cold in winter. After the reform, it is blown with warm air in the winter. The air intake can be controlled by the operator to ensure comfort and dust entry.
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3. Sand blasting machine protective clothing dust cap is attached with the top, made of artificial leather, elastic band at the cuffs and waist, the button part is folded, and the head and the upper body are ensured when worn. Protected from dust and dust, the hat also has a fresh air dispenser to ensure that the operator breathes fresh air. The eye part is covered with a plexiglass cover, plus a common glass cover to facilitate the operator to observe the workpiece during work. Comfortable and dustproof, it is widely used.
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