The important basis for selecting spiral blade material is the material properties of spiral blade in use, including mechanical properties, physical properties chemical properties.

For spiral blade, mechanical performance is the main energy index. The parameters characterizing mechanical properties mainly include strength limit σ B, elastic limit σ e, yield strength σ s σ 0.2, elongation δ, reduction of area ψ, impact toughness AK hardness HRC HBS, etc. Among these parameters, strength is the main parameter mechanical property index. Only when the strength meets the requirements, the auger blade can work normally be durable.

1. After descaling the spiral blade cleaning the cast iron, the hydrochloric acid with the concentration of 8% - 10% the Jordan corrosion inhibitor solution with the amount of hydrochloric acid equivalent to 3% can be heated to 50-60 ℃ injected into the water jacket for soaking for 2-3 hours to discharge, then washed with potassium dichromate aqueous solution injected into the water jacket with 5% caustic soda aqueous solution for neutralization. The remaining acid solution. Then rinse with water several times until it is clean.

2. When caustic soda solution is used to remove the scale with silicate as the main component, 2% - 3% caustic soda solution can be added to the cooling system, the standby vehicle will be released in 1-2 days. Drive rinse with clean water. Repeat clean the cooling system with clean water.

Shaftless helical blades are widely used. Changxing humongjiang environmental protection machinery manufacturing Co., Ltd. will introduce the causes solutions of shaftless spiral blade damage

1. The shaftless spiral blade is too thin. Due to the lack of intermediate shaft, all stress points are on the blade, so the thickness of the blade has a very important impact on the actual use of the equipment. Choosing the right thickness of spiral blade will directly affect the effect of using spiral blade.

2. The wheelbase of shaftless spiral blade is too small, the diameter of spiral tube is selected correctly. When conveying powder flake materials, usually because the blade wheelbase is too small, the extrusion force is too large, which directly damages the blade. When rotating, no matter how thick the blade is, it will also cause a certain degree of damage. Another reason is that the pipe diameter is too small, which can also lead to excessive pressure. It will seriously damage the blade. After taking the above two measures, the blade speed can be reduced at the same time. In order to achieve this effect.