Unlike ground stone, it can be constructed with a heavy grinder.The grinding of metope stone is leveled, can rely on worker to use portable polishing machine to cooperate grinding piece to undertake construction at present.Due to the lack of pressure, the hand throwing machine needs the help of people's arm strength, so it needs skills, but also more tired, the effect is also general, want to use the hand throwing machine + dry grinding, the wall, the table to grind out a good effect, the key elements are focused on the following points:

Generally speaking, if there are three conditions, the grinding must start from the primary mill:

1: there is a difference in the height of the plate, which needs to be leveled.

2: serious scratches appear on the surface of the plate.

3: plate surface aging, pulverization, pollution and other situations.

When the above phenomenon occurs, it is necessary to start grinding from 50# of the dry grinding sheet.This ensures a new, flat surface through deep cutting.

Without grinding from 50#, the height difference of the plate and local defects caused by various erosion cannot be completely solved.

Because the subsequent grinding, want to deal with this basic problem, very laborious, and may not be able to cure.

If the above phenomenon does not occur, you can start grinding from 100#, 200# or even 400# according to the actual situation of the plate

Second, the choice of pressure

The hand-throwing machine, refurbished, differs from the grinding machine and the crystal machine in that it relies on the worker's arm strength to generate pressure.

This is crucial.But people obviously don't compare their own forces to the machine's own gravity, and can't empathize with it, so they may overlook it.

In fact, for grinding machine or crystal plane machine, flat on the ground, it produces pressure itself has the following characteristics: one is uniform, two is sufficient.

Grinding machine, crystal machine weight is large, the downforce itself is enough;And the machine grinding disc is much larger than the diameter of the 3 inch, 4 inch, 7 inch grinding disc installed by the hand throwing machine, so the pressure is very uniform.

But these two things, which are natural for machines, are very difficult for people.

Then, about the downforce that the arm needs to generate during operation, there are the following requirements:

1. Strength

There's no way to measure the downforce of the arm as it grinds.

However, the materials used in our stone care industry are very characteristic, such as powder and agent, and the weight is generally 5 kg.In operation, the worker can refer to the force required by the arm when carrying a bucket of crystal powder weighing 5 kg to compare the downforce during polishing.

We recommend that the pressure should reach 10~20 kg during the whole grinding time.About 10 kg can be used in the optimization phase of grinding.

Grinding and polishing stage, can be 5~10 kg.Only by reaching this standard can the grinding effect of the grinding disc on the stone surface be truly effective.But in practice, many people have a habit of getting things done.You know, when grinding with a grinding machine or crystal plane machine on the ground, even if it is a rub, there is also the natural downforce generated by the gravity of the machine itself.

Metope and table, just rub, is actually missing the "down pressure" this important condition of grinding.It's hard to grind it out.

2, uniform strength

We give a pressure range of 5 to 20 kg, but this does not mean that you can jump at will within this range, but should always keep the force uniform, do not neglect the weight.

For example, when some people throw grinding, grinding from the position close to the body, just up the pressure is very large, when the machine moved away from some, it became a rub and pass.

Uneven pressure, the grinding of different positions of the cutting degree is not enough, will cause local height difference;It can also cause scratches.

Therefore, excellent workers should improve their operating skills, no matter how large the area, grinding down the pressure on all areas should be controlled to the basic consistency.But at the same time, if you encounter local height difference, you must increase the force of the arm.

This is not inconsistent with the general principle.For example, a worker who is used to keeping the pressure at 10 kg during the leveling phase can apply 15 kg, or even 20 kg, of pressure to the area when confronted with an altitude difference such as a cut.

Wait until smooth, and then bring the strength back to about 10 kilograms.

3. Move evenly

In addition, the polishing speed should be uniform, neither too fast nor too slow.

The specific rate, can refer to the mature experience, can also refer to their own ground grinding rate to implement

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