Often, when discussing or reading about coated hermes abrasives australia open and closed coating, you will hear the terms “open coating” and “closed coating”.
There have been several instances when talking to customers who will specifically require the use of open coating materials.
When we ask if they know what it means, many people say no!
The decision to open/close the coating may have a significant impact on the life and finish of the hermes abrasives australia, so you need to understand this decision well.
Closed coat
The term “blocking coating” means that the underlay of the belt, sheet or disc is … 100% of the backing is covered by the hermes abrasives australia. Considering this statement logically, you can get two things from it:
Closed jacket products will be the most aggressive
Closed jacket products will provide the highest quality decoration
They will be the most radical, as every possible space available for cutting particles is used to cut the particles.
They will provide the best finish because there is no gap in grain coverage. No matter what kind of coarse sand you want to polish, you should make full use of the work that the grain can do.
Semi open/coat
The terms “semi-open coating” and “open coating” mean that the amount of hermes abrasives australia particles on the belt, sheet or disc backing is modified (reduced) to varying degrees. Semi-open coatings generally refer to a 30% reduction in grain on the backing, while open coatings typically mean 50% retention. Considering these statements logically, you can get two things out of it:
Semi-open and open jacket products will reduce enthusiasm
The average particle size of the semi-closed and open coated products is rougher than that of the closed coated product.
The semi-open and open coated products have less grain on the backing, which results in a reduced cutting capacity for each grit.
There is a gap in the grain coverage of semi-open and open coated products, so they provide a non-uniform surface finish that will fall to the rough end of the surface finish parameters of the specified particle size.
So why use one?
Unless you have a reason, you should never take off the closed coat material. The main reason for this is that the material you are grinding or grinding is inherently soft or tacky. Examples of soft/sticky materials include soft wood (pine, fir, spruce, larch, cedar, cypress, rosewood, tamara and yew) or soft metal (some aluminum, brass, bronze, copper, Magnesium, titanium, zinc and zirconium) or non-phenolic plastics/rubber. When you try to sand these types of materials with a closed grain cover with hermes abrasives australia, the area between the tips of your particles will be filled with rubbish after a few moments of sanding.
Eventually, it will load to a higher height than the top of the grain and completely cover it. If you continue to polish with hermes abrasives australia in this state, the belt will burn out and the workpiece will most likely be burned. This is where semi-open and open coating materials work.
By spacing the grain on the backing, space can be left between the individual grains, which helps to reduce the amount of rubbish left between the grains. You can then use compressed air or simply use the motion/vibration of the flowing hermes abrasives australia to help remove the attachment. This allows you to polish soft materials for long periods of time, resulting in better results in hermes abrasives australia life and workpieces. Indeed, if all conditions are the same, roughing of each grit can be done in a shorter period of time, but for soft materials, semi-open and open coatings will optimize grinding time and effectiveness.
I often encounter people using open coating/anti-static belts to polish cherry, oak, ash or other hardwood on their broadband machines. They don’t actually have any “problems”, but I do try to tell them the benefits of using open-coat materials for hardwoods and open-coat materials for cork. They sacrificed their lives and qualities on bare wooden surfaces for no reason.
Similarly, sometimes we regularly call our open coating materials on our customers’ softwoods, which works very well. They sometimes try to use it on cherry or oak and call to complain about burning. Well, you only have 50-70% of the grain trying to get 100% of the work, and you don’t make any adjustments to the grit sequence. All of these factors will not only benefit the combustion of the grinding wheel abrasives, but also the combustion of the workpiece. Essentially, you are overworked with open coated belts and too much heat can cause burns.
The best solution is to get the job done with the right tools. A closed coating is applied to the hard material and an open coating is applied to the soft material. The material of the open jacket usually has the word “OC” on the back, so it is not difficult to separate and easy for the clerk to identify.
Understanding the meaning of these two terms and how they affect the quality of the hermes abrasives australia from the life of the workpiece to the finishing of the workpiece can greatly increase your profit and customer satisfaction.
** Open jacket materials with a washable backing are usually available. Belt cleaning can be very simple and inexpensive, or more complicated and quite expensive. From solutions to soaking belts in your store to steam cleaners. If you feel that belt cleaning is worthwhile for your operation, you can research various methods and price ranges online. Cleaning is a good way to increase hermes abrasives australia life because semi-open coatings and open coatings help reduce load rather than completely eliminate load.