Andersen Steel produces agricultural equipment including grubbers, front packers, and stubble tillers equipped with vibration tines for soil cultivation. Their equipment is exposed to extreme loads, causing decreased wear life of parts including the tines.
Made using specially arched rolled steel at the company’s Poland plant, Andersen Steel tasked engineers at Rosler with finding a better way to process the tines and improve their wear life. We delivered a solution in the form of two identical machines for blast cleaning and shot peening.
Delivering a Solution
Compared to flat steel, the rounded edges of the material Andersen uses prevent small cracks from forming during the shaping process. The work pieces pass through a blast machine to remove mill scale and other contaminants before shot peening to further improve their wear resistance.
For these dual shot blasting requirements, Rosler suggested two identical Rosler RHBD 13/18 K hanger machines. Successful blasting trials in a Rosler test center helped Andersen realize the advantages of purchasing these Rosler machines by demonstrating that shot peening the work pieces doubled the uptime of the tines.
This improvement considerably exceeded the expectations of Andersen Steel and justified their investment in new equipment.
Work pieces pass through two identical, subsequently arranged hanger machines for blast cleaning and shot peening in Andersen Steel's RHBD-K shot blasting machine.
Technology in Action
Each of the hanger blast machines is equipped with eight Gamma® 400G turbines featuring installed power of 15 kW each. Compared to conventional blast wheels this uniquely designed Rosler turbine style offers a 15–20 percent higher blast performance with double the uptime of wear parts like throwing blades.
Pairs of two turbines located in the four corners of the blast chamber bombard the tines with media. The turbines are positioned to ensure that the individual blast patterns do not overlap, creating perfect blast coverage on the tines.
Each blast machine is equipped with eight Gamma 400 G turbines strategically placed to ensure perfect blast coverage on the tines.
Since the different work piece types require different media throwing speeds, the turbines are equipped with variable frequency drives.
After the shaping process, work pieces are attached to the transport system on special carriers which move the components through the blast-cleaning, shot peening, painting, and drying stages.
Vestibules equipped with multiple overlapping curtains are installed on the inlet and outlet side of the blast chamber to prevent blast media from spilling out of the machine. A sensor recognizes when a carrier enters the inlet vestibules and sends a signal to the machine controls to start the blast process.
The Rosler Way
“Finding a better way…” is more than a motto at Rosler; it’s our mission. With more than 80 years of experience and a portfolio containing more than 15,000 equipment and consumable products, solving challenges is what we do. Contact us today to discuss your shot blasting challenges!