（1）Why Should We Pickling of Stainless Steel Screw Conveyor?
In the u-type screw conveyor process, the stainless steel appearance due to the oxidation of oxidation will appear black, yellow skin.In order to improve the appearance and corrosion resistance of stainless steel, processed stainless steel must take the pickling passivation treatment.Acid pickling removes the welding and oxide produced after high temperature processing.So that it can make the surface of the stainless steel bright silver light, and the treated surface forming a layer of oxide film.And then it will not produce secondary oxygen erosion, thereby improving the quality of surface corrosion of stainless steel products , prolong the service life of equipment.
（2）What is acid pickling processing?
Acid pickling processing is one way to clean metal surface，With acid solution to remove scale and rust on the steel surface method.Metal surface after pickling was silvery white, while the passive surface and improve the corrosion resistance of stainless steel.Pickling process currently used due to the long pickling time, leading to high processing costs. In view of this situation, usually at room temperature fast pickling process. The process under room temperature can quickly remove thick stainless steel surface oxide, especially for welding black and inclusion removal effect is good, clean and bright surface after pickling, non-volatile light fading, yellowing.More information or any interest, please visit www.pkmachinery.com
The Truth Reason About the Screw Conveyor Blade Damage
Screw conveyor blade is an indispensable parts of the screw conveyor which plays an important role in this kind of machinery. So know the reasons why screw blade damages is necessary and then we can adopt corresponding methods to solve it. Today PK Machinery will introduce the methods how to protect the screw blade.Wish you have a better understanding according to the following passage.
Hanging bearing, bolt ends and spiral screw conveyor blade three parts are frequently wear parts. In addition to temperature, environment, materials and other natural causes, as well as structural factors and human factors. Here, we will analyze the reasons for the screw conveyor spiral blade damage as follows.
When the screw conveyor in the event of clogging or not material discharge opening, the operator should reduce the operating speed and reduce power consumption.Screw conveyor can transport long distance,so it often uses a multi-stage series-mounted. When transport the garbage and organic plant, it will inevitably cause damage to the spiral blade.
Spiral blade wear mainly in the blade edge, the farther away from the axis of rotation, the greater the force, the number of void formation to produce the more cracks. In order to make the spiral blade wear more durable, better transportation of materials, production often thick spiral blade.
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