PRE-TREATMENT , SURFACE PREPARATION , DEGREASING & CLEANING
Turbine replacement increases productivity and lowers costs
At the center of the modernization concept was the replacement of the two 22 kW turbines originally supplied with the shot blasting machine . The existing units were exchanged with high performance Gamma 400G-8 turbines in wear-resistant foundry version , also with a drive power of 22 kW each . They are equipped with eight curved throwing blades in „ Y “ -Design with a precisely calculated curvature . This generates an extremely high throwing speed along with a precise media guidance and results in an optimal efficiency . The unique characteristics of the Gamma turbines with a 45 % higher blast performance allowed achieving the needed capacity increase .
Another feature of the new high performance turbines is that they require a lot less energy . The energy savings were an important reason for the overall operating cost decrease of 34 %.
Expenses for maintenance reduced by over two thirds
The unique design of the throwing blades produces not only a higher performance but allows using both blade sides by simply turning them around . Depending on the utilized blast media , this design feature , combined with the use of wear resistant blade material , for example , forged tool steel , results in a three times longer lifetime compared to conventional turbines . An innovative quick-change system allows easily and quickly changing the blades at the mounted turbine . The usually required time-consuming dismounting of impeller , control cage and infeed pipe is no longer necessary . Overall this reduces the expenses for maintenance by more than two thirds .
Quick amortization produces a competitive edge
Based on the capacity utilization to-date , the productivity increase achieved by the upgrade and the cost savings the Retrofit investment will have paid for itself already after 1.1 years . The technical features of the modernized shot blasting machine and the quick amortization allow the user to improve his profitability and consolidate and expand his competitive position in the market .
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Top performing resin fibre discs from Deerfos
Deerfos ’ Bora9 resin fibre discs have proved to offer extended product life as well as a competitive cost price in a recent comparison test against a leading brand of discs being used at a Midlands-based manufacturer .
The test was conducted with Deerfos ’ Bora9 discs in size 115 x 22mm , in 36 grit . They were compared to the discs currently used by the manufacturer to deburr stainless steel exhausts . The Bora9 disc offered the highest productivity with double the product life .
Sean Rowell , Master Abrasives Technical Sales Representative , was on site to aid in conducting these tests . He commented : “ The product life of the Deerfos discs surpassed the previous brands by double , which is a real plus for operators saving time on applications such as smoothing welds . It not only saves manufacturing time but reduces overall costs . The Bora9 is definitely a product worth trying in manufacturers looking to improve productivity .”
The Bora9 resin fibre-backed disc uses a ceramic grain and features a supersized coating with active filler which significantly reduces heat generation and helps prevent burning . Bora9 discs are ideally suited for medium to heavy stock removal on hard to grind alloys and as such are ideally suited for dressing stainless steel welds . Benefits include excellent stock removal , high grinding performance , reduced heat generation and improved productivity . The discs are available from Master Abrasives in diameters 115 , 125 and 175mm in various grit sizes .
Master Abrasives have been UK distributors for Deerfos products since their partnership began in 2018 . Master Abrasives technical sales team can help give advice on application requirements and provide free trials of Deerfos Bora9 discs from stock as well as other grades of discs available in the Deerfos range .
Telephone : 01327 703813 Email : sales @ master-abrasives . co . uk Visit : www . master-abrasives . co . uk twitter : @ surfaceworldmag OCTOBER 2020
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