It is important to eliminate all inclusions and pollutants when preparing a material’s surface for welding and during interpass and postweld cleaning.
Main Tools for surface preparation and cleaning in welding applications:
Bonded abrasives/grinding disc for grinding welds
Coated abrasives/flap discs for grinding welds
Wire brushes for grinding welds
Why many people choose abrasive flap disc for grinding welds?
1: Abrasive flap disc is a flexible grinding wheel. It can offer more surface area to grind.
2: Abrasive flap disc is made of coated abrasive cloth. The abrasive flap can keep fast grinding without heavy pressure, so that can keep goods feeling for user.
3: Abrasive flap disc can supply the accurate, and nice finish surface grinding.
4: Abrasive Flap discs can supply the cooler cutting and grinding with less gouging and burning.
5: Abrasive flap disc can give the direct user a lower cost during working process, because abrasive flap disc can supply fast stock removal and provide grinding, blending and finishing on one product at the same time.
How to select abrasive flap disc for grinding welds?
1: the flap disc shape choice
At present , T27 abrasive flap disc and T29 abrasive flap disc are available in our company JUMA ABRASIVE CO.,LTD.
T27 abrasive flap disc - Flat flap discs are the best choice for generating a smooth finishing on flat areas or outside edges.When selecting Type 27 abrasive flap disc for finishing and applications, the flap disc is required lower grinding angles—5 to 15 degrees
T29 abrasive flap disc - conical flap disc is the best choice for aggressive stock removal. Conical flap discs have angled flaps and can be used on both contoured and edge work. the angle of T29 abrasive flap disc can provide more surface contact for stock removal on flat surfaces. T29 abrasive flap discs are the best choice when speed and stock removal are primary considerations.Direct user can choose T29 abrasive flap disc for more aggressive, higher angle grinding under 15 to 35 degrees.
2: backing plate of abrasive flap disc for grinding welds
All abrasive flap discs are a combination of abrasive flaps adhered to a backing plate.The backing plate can provide flap disc stability during operation. There are three main different backing plate types used for flap disc
Fiberglass backing plate - this kind backing plate can help to absorb vibration and are consumed during use, with no smearing. Fiberglass backing plate is the most popular material because of its highest strength and light weight.
Plastic backing plate - this kind backing plate is used by some manufacture, just because of the lowest cost to down the cost of flap disc.But this kind backing plate can not ensure the speed rotation , and could not supply highest strength , so we never use this kind backing plate for our export order ,unless customer need this kind backing plate according with his market.
Steel backing plate - this kind backing plate is the least popular, but are good in applications demanding extra high strength and rigid support. At the same time the cost of this kind backing plate is very high .
3: Flaps size and flaps densities on abrasive flap disc for grinding welds
It is important to match the flap size and flap density according with your application.
Standard size and density flaps are excellent for heavy-duty applications and rapid stock removal.This kind flap disc have the common flapsize and flaps number.
High Density flaps are ideal when working on uneven or curved surfaces, as well as finer grit blending. This kind abrasive flap disc are extra-thick flap disc. In JUMA ABRASIVE CO.,LTD, we use 25%-45% more abrasive cloth material to manufacture this kind high density flap disc. The main advantages of this high density flap disc is longer using life time , but the cost is higher than the common flap disc .
4: abrasive grit and grit size choice for welder
About the abrasive grit and grit size choice of abrasive flap disc for grinding welds , it should be mached with your workpiece material and the roughness of your finished workpiece you need.
Ceramic Alumina flap disc – the grain micro fractures of Ceramic Alumina flap disc to allow a continuous supply of the sharpest cutting edges. This kind flap disc can provides the fastest cut as well as the best utilization of the entire grain for the longest life, especially on stainless or high alloy materials. The price of this kind flap disc is highest
Zirconia Alumina flap disc – it provides a very good cut rate to cost ratio. The Zirconia Alumina flap disc is always a good choice on stainless steel, carbon/mild steel applications.The price of this kind flap disc is middle.
Aluminum Oxide flap disc – this abrasive flap disc is recommended for smaller jobs where a consistent, lower cost product is needed. The price cost of this flap disc is the lowest . It also can be used for matel steel , wood grinding work.
Basic information of JUMA abrasive flap disc for grinding welds
Flap disc shapes : T27 abrasive flap disc for grinding welds ,T29 abrasive flap disc for grinding welds;
flap disc grit : Grit 36 - Grit 320
Flap disc types : 4"( 100x16mm) , 4.5"(115x22.2mm), 5"(125x22.2mm),6"(150x22.2mm) , 7"( 180x22.2mm)
Specifications of flaps on flap disc:
Number of flaps on flap disc to choose in our company : 56 flaps , 72 flaps ,80 flaps,90 flaps, 120 flaps ,140 flaps or other flaps number according with customers's need .
Flap size accoding with customers' need
Different specifications of flaps,the cost of flap disc is different.
Why customer choose our company to buy abrasive flap disc for grinding welds?
1: we are the direct factory to manufacture abrasive flap disc, cutting wheel and grinding disc.
2: we use the highest quality abrasive cloth material( not only have local famouse abrasive cloth in stock , but also have Germany VSM cloth in stock ), our own top platinum series fiberglass backing plate with 8-16 layer to make our flap disc, so that we can ensure our flap disc have main advantage, such as high grinding efficiency, stability of the grinding quality, High strength and flexible, High durability with lower price.
3:Quality Assurance and Production Capacity
JUMA ABRASIVE CO., LTD have the strictly executes quality management system of ISO 9001 in company operation， equipped with advanced production facilities, has a leading level in product designing and development, and has a perfect and strict testing system for material collecting, procedure control, end-product testing and detailed records of production.
JUMA ABRASIVE CO., LTD. has already owned 150 sets of advanced manufacturing production line to ensure goods delivery time .
Generally , 30 days for 1 container order. Roughly one or two weeks for sample order
Learn more about us, you can check the VR of our company .
Welcome your inquiry and visit in any time.As one of the leading abrasive flap disc for grinding welds manufacturers in China, Juma Abrasives now brings you the best quality and low price products from its professional factory. It is of the best performance, strong durability and long lifespan.