Resin cutting discs are divided into three categories according to the way of use, mainly cutting discs, grinding wheels, and polishing disc . Resin cutting discs are widely used in the cutting of metal materials due to their high bonding strength, impact resistance, and fast cutting speed. Grinding wheels pay attention to the rigidity of the grinding wheel, the width of the work piece incision, the size of the burr on the incision, whether there is burnt on the incision, cutting speed, and the life of the grinding wheel. Wait. Resin grinding wheels are widely used in the grinding of metal materials because of their good toughness, certain elasticity, and not easy to burn work pieces. Grinding wheels focus more on the flexibility of the grinding process, the comfort of Cutting efficiency, grinding precision, grinding wheel does not collapse or drop blocks during the grinding process, etc.

Cutting discs are usually very thin and only have two layers of safety reinforcement on the inside, which means they can break or explode on an angle grinder if misused under the pressure of the grinder, which is very dangerous.
Grinding wheels are usually reinforced with extra reinforcement. They are thicker and can bear a lot of longitudinal force. They are suitable for grinding work pieces, but if you use them to cut, they will not cut.
We always recommend that you cut with a slicer or grind with a burr.
By the way, welcome to contact us for free samples for quality testing, we will be your best choice.
Here’s how to use a abrasive disc and how to install it.
First of all, it is necessary to use the abrasive disc correctly, which can be considered according to the equipment, grinding amount, process requirements, work piece processing accuracy requirements, surface roughness requirements, production efficiency and production cost. For static balance, the diamond pen must be trimmed correctly ,the axis is generally 1-2mm lower than the center of the grinding wheel, and inclined downward by 5°-10° to prevent the diamond pen from being stuck into the grinding wheel due to vibration. When rough repairing, use a large amount of back-toothed knife, and repeat the trimming many times. When finishing, use a smaller knife feed and cutting depth, reciprocate 2-3 times, and trim from right to left for the last time. The end face should be repaired first, and then the circumferential surface should be repaired. When trimming the side of the grinding wheel, such as manual trimming, the diamond pen must be held firmly, lightly touch the side of the grinding wheel, use a small cutting depth, preferably have a fulcrum, move slowly and at a uniform speed, and at the same time, pay attention to sufficient cooling.
In the grinding process, the correct selection and dressing of the grinding wheel is the key to improving the machining accuracy and grinding technology level. The grinding process is basically the last process of parts processing. The final geometric size determines the processing accuracy of the parts. High-quality products must eliminate all aspects of processing defects, strictly follow the process flow, and eliminate the influence of unfavorable factors. Only by combining rich experience and excellent processing level can we create the ultimate boutique.
1. Before installing the resin grinding wheel on the main shaft, check whether the machine is running normally, whether there is any crack or deformation. After installing the main shaft, it must run dry for more than two minutes before starting to work. When grinding, the operator should stand on the grinding wheel. The side in the direction of rotation prevents injury in case the grinding wheel fragments fly out ;
2. The grinder must have a protective cover that meets the requirements, the processing material must be fixed, and the grinder should have a movable bracket so that it can be adjusted at any time according to needs. Generally, the gap between the bracket and the grinding wheel is 3 mm. Do not use excessive force during processing. The operator must wear protective glasses to prevent dust and debris from flying into the eyes;
3. Use a hand-held civil grinding wheel. In order to prevent electric shock accidents, a leakage protector must be installed.
4.The speed during use shall not exceed the safe working line speed specified by the resin grinding wheel;
5. It is not allowed to use grinding wheels to grind non-ferrous metals, wood, fiberboard, etc. Because the grinding debris of these materials can easily block the grinding surface of the grinding wheel, resulting in reduced grinding efficiency and slipping, vibration and noise during grinding, which not only affects the quality, but also is prone to accidents.
6. The resin grinding wheel has poor alkali resistance, and its structure is easily damaged when it is corroded by strong alkali. The cooling liquid used during use should not contain more than 1.5% of alkaline substances;
7. Due to the poor chemical stability of the resin grinding wheel, care should be taken to prevent freezing, moisture, collision and high temperature above 50 degrees during storage.
According to the manufacturer of grinding wheel and cutting discs, because resin grinding discs have certain elasticity, low heat resistance, good self-sharpening, easy production, and short process cycle. Therefore, they have been widely used in rough grinding, rough grinding, cutting and free grinding , Such as grinding steel ingots, deburring castings, etc. It can manufacture high-speed, high-gloss grinding wheels, heavy loads, cutting off, and various special requirements.
Precautions for resin grinding wheel cutting discs in use:
1. When the cutting piece is transported, it must be handled with care to prevent collision and splitting!
2. Cutting discs should be protected from moisture, freezing, and deformation when stored. The cutting discs should be flat-packed on wooden pallets or wooden frames, and the stacking height generally does not exceed 1.5 meters!
3. The storage time of resin cutting discs is one year. After the time is exceeded, the rotary inspection should be carried out again, and it can be used only after it is confirmed to be qualified!
4. When the cutting disc is installed on the angle grinder, the flange surface in contact with the cutting disc is required to be clean and flat. When tightening the cutting disc, it is required to be moderately tight. Only special wrenches are allowed to be used for reinforcement, and supplementary fixtures (such as extension wrenches, etc.) are prohibited. To prevent man-made damage to the abrasive!
5. The speed of the cutting disc cannot exceed the working line speed stipulated by the trademark of the cutting disc. When using a pneumatic grinder, it is necessary to prevent the air pressure from being unstable, causing the cutting disc to exceed the maximum speed!
6. When using the cutting disc, the force should be pushed slowly. Excessive force may cause stalling, jamming and smashing of the cutting disc. If it gets stuck, the cutting disc should be lifted immediately to avoid burning or breaking the cutting disc!
7. The cutting disc is only allowed to be installed and used in a single piece, and it is strictly forbidden to install and use two or more pieces at the same time!
8. Resin cutting discs are only allowed to be used for cutting, not for grinding!
9. The equipment used for cutting discs should comply with the GB4674 grinding machinery safety regulations!
10. Users should abide by the safety rules of GB2494 abrasive tools when using cutting discs!
Suggestions for safe use and common problems and solutions:
A. The grinding wheel is consumed too quickly and the life is short. The possible reasons are:
1. The hardness of the selected grinding wheel is not enough. The grinding wheel with this hardness is suitable for cutting other metals.
2. The grinding wheel is too thin.
3. The speed of the angle grinder is too low.
4. The power loss of the angle grinder is too large under no-load and loaded states.
Solution:
1. Choose a grinding wheel with relatively high hardness.
2. Choose a relatively thick grinding wheel.
3.Choose an angle grinder with a higher speed.
4. Reduce the cutting pressure or replace the angle grinder with higher power.
B .The grinding efficiency is low, the possible reasons are:
1. The grinding wheel is too hard.
2. The diameter of the selected grinding wheel is too small relative to the diameter of the cutting section.
3. The power of the angle grinder is too low.
Solution:
1. Choose a grinding wheel with relatively low hardness.
2. Choose a grinding wheel with a larger diameter.
3. Choose an angle grinder with higher power.
C.The grinding wheel is stuck, the possible reasons are: Improper selection of the grinding wheel.
(such as: cutting stainless steel, alloy steel grinding wheel, used to cut aluminum, etc.)
The solution is to select the appropriate grinding wheel according to the material characteristics of the workpiece.
D.Burning on the edges may be caused by:
1. The grinding wheel is too hard.
2. The cutting feed is too large and the cutting pressure is too high.
3. Improper cutting method (such as: cutting in one place for a long time)
Solution:
1. Choose a grinding wheel with lower hardness.
2. Reduce cutting feed and cutting pressure.
3. Try to cut straight forward and backward as many times as possible, do not cut in one place for too long, and exit the stroke properly before cutting.
E.After cutting, a lot of burrs are generated, the possible reasons are:
1. The grinding wheel is too thick.
2. The grain size of the grinding wheel is too coarse.
Solution:
1. Choose a thinner grinding wheel.
2. Choose a grinding wheel with a finer grain size.
F. The edge loss of the grinding wheel is not uniform. The possible reasons are:
1. Incorrect working method (using the cutting disc as a grinding disc)
2. The workpiece is not clamped firmly and vibrates.
3. The grinding operation angle is too small.
Solution:
1. It is strictly forbidden to use cutting discs as grinding discs. Please use special grinding discs or multi-purpose grinding discs.
2. The workpiece must be firmly clamped in a position suitable for cutting or grinding.
3. The correct grinding angle is 20-30°.
G. The grinding wheel is broken, the possible reasons are:
1. The grinding wheel is stuck during the cutting process.
2. Too much cutting force.
3. Too much lateral pressure.
Solution:
1. Vertical cutting must be ensured, otherwise there will be too much lateral pressure on one side, which will cause the cutting piece to break.
2. The cutting force is too large. Under normal circumstances, the pressure of the angle grinder’s own weight is enough.
3. Cut vertically and grind at an appropriate angle. Do not use cutting discs/grinding discs for grinding/cutting operations, unless you use cutting and grinding multi-purpose grinding discs.
H. Vibration of the grinding wheel, possible reasons:
1. The balance of the grinding wheel is not good.
2. Improper maintenance of the angle grinder (such as excessive wear of the bearing).
3. Improper clamping of the grinding wheel causes the grinding wheel not to be installed in the middle.
Solution:
1. Please replace the grinding wheel.
2. Replace the bearing of the angle grinder.
3. Check the shaft core of the angle grinder, and check the operation of the grinding wheel after it is clamped.
During the cutting operation, keep the vertical cutting, so as not to cause the grinding wheel to be stuck due to excessive lateral pressure, which will cause the metal ring in the middle of the grinding wheel to fall off or be damaged. Do not use cut-off wheels for sanding work. Choose a cutting disc with a larger diameter for use with a more powerful angle grinder. The weight of the angle grinder itself can ensure the cutting force required for normal cutting, without the need to apply greater cutting force. When you need to do both cutting and grooving and grinding with a small workload, please choose a multi-purpose cutting and grinding disc.
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