A scraper blade is a handle-equipped, flat tool with a strip that holds leather or rubber. The scraper blade is a key component of the scraper machine but can only realize its value when used with other parts of the scraper machine.

The scraper model SGB620/40 requires approximately 200 scraper blades made of 20Mn material.

Usage

Rakes are primarily used in coal transportation, mechanical engineering, laboratories, instrument casting, and machine parts. When making molding sand samples, rakes are used to scrape off excess sand above the sample tube. Rakes can also be used on surfaces like sidewalks, window glass, or decks to push, spread, or wipe away liquids. They can also be used to level newly cast bricks. Additionally, as accessories for scraper conveyors, rakes are mainly used to support the material transported by the scraper conveyor.

Technical Specifications

Due to the broad applications and varying functions of scraper blades, the following technical requirements are necessary for scraper blades:

Blade hardness: When the blade is used for printing, a relatively softer one should be chosen. It should also be resistant to deformation under pressure or heat. Typically, the hardness of the blade material should be selected between 60 to 90 Shore hardness.

The abrasion resistance of the scraper. As the scraper needs to come into direct contact with items, there will be friction with each use, thus requiring good abrasion resistance, as well as certain lubricity and mechanical strength to ensure its service life.

The blade's solvent resistance. As the blade is required to scrape various liquids, including laboratory fluids. Upon contact with solvents, the hardness of the blade may change to some extent, thus it is necessary for the blade to possess good solvent resistance.