The testing bench is mainly used to fix workpieces, and is a basic working platform for fitter workers to debug equipment, assemble equipment, and repair equipment. Mainly used in engine laboratories to provide basic experimental platforms for engines and dynamometers. It is suitable for a variety of inspection, test work, and measurement datum planes; used for mechanical inspection and measurement datums; check the dimensional accuracy or shape and position deviation of parts, and make close markings. Usually made into box type, square, round, rectangular and other shapes, the structure is divided into box type, double enclosure type, single enclosure type.

 

cast iron testing bench

 

The cast iron floor is anti-rust, adding an anti-rust layer to the surface of the cast iron floor, which not only prevents rust but also increases the flatness of the platform surface.

 

Specific methods for preventing rust on the surface of test bench:

 

1. Surface pretreatment, cold spray zinc coating directly on the iron or galvanized surface, otherwise there will be no anti-rust effect. If there is an old coating film, remove all the old coating film, and use power tools for rusted places derusting.

 

2. The coating contains a large amount of zinc powder, which is easy to cause precipitation and stratification during storage, so stir it thoroughly after opening the lid. At the same time, you should also pay attention to frequent stirring during the coating process to prevent the precipitation of zinc powder.

 

3. The coating methods of cast iron floors are brush coating, roller coating, air spraying, airless spraying, and spray type at the same time.

 

4. Brushing/rolling of cast iron floor: Choose a brush with softer bristles that can absorb a large amount of paint. When painting, be careful not to extend the film or leave brush marks.

 

5. Air spraying: filter screen 100 mesh, use nozzle diameter 1.5～2.0mm Air pressure: when standard 0.29MPa dilution, use thinner to set less than 5% of weight. Airless spraying: filter screen 50-60 mesh, use model GRACO is larger than GGO317, lower gas atomization pressure 10MPa basically does not need to be diluted. When painting, please be perpendicular to the painting surface about 30cm, and the painting speed is 10cm/sec.

 

6. For the top coat coating of cast iron floors, when cold spray zinc coating is selected as the primer of the coating system, it can be matched with a variety of subsequent coatings. (Except for alkyd oil coatings), spraying is recommended for the coating method of the top coat Or aerosol type, brushing or rolling can easily cause paint off the surface of the coating film.

 

7.Because of the large amount of zinc powder, there are many gaps in the cold spray zinc coating film, and bubbles are easy to appear when directly painting. You can first coat about 50% of the diluted topcoat on the cold spray zinc coating film for filling No gaps on the surface, then paint on it.

 

 

Jinggong Measuring Tools Producing Co., Ltd is specializing in manufacturing and exporting all kinds of cast iron products，especially for cast iron floor plates, cast iron surface plates, cast iron clamping plates, cast iron angle plates, cast iron box table and other machine tool castings. The products have the features of reasonable design, stable structure, superior quality and competitive price.