What type of sandpaper is used for wood grinding?

Use 80 sandpaper to remove dirty things for white stubble, close the edges with 360, and burr. The primer is fully ground with 360 sandpaper, then 600 full sand marks, and 1000 sandpaper is used to polish and shine, and finally the top coat is sprayed.

Sponge sandpaper. It is suitable for grinding smooth parts, and can be used in a variety of materials.

The sponge sandpaper sanding process has the characteristics of high production efficiency, processed surface and low production cost, so it is widely used in furniture production, and the final surface quality of furniture products has a close relationship with the sanding process. Sponge sandpaper is the main tool of the sanding process.

Dry matte paper. Dry sandpaper uses synthetic resin as a binder to bond silicon carbide abrasives on latex, and coats with an antistatic coating to make high-grade products, which have the advantages of anti-clogging, anti-static, good softness and high wear resistance. A wide range of fineness options are available for grinding metal surfaces, putties and coatings.

Dry sandpaper is generally made of special kraft paper and latex paper, using natural and synthetic resin as binders, and is manufactured by advanced high-electrostatic sand planting process. It is widely used in furniture, decoration and other industries, especially coarse grinding.

Water frosted paper. The texture is relatively fine, and the water frosted paper is suitable for grinding some things with a more delicate texture, and is suitable for post-processing;

The gap between the sand grains of the water sandpaper is smaller, and the grinding of the broken is also smaller, and the broken dust will flow out with the water when used with water, so it should be used with water, if the water sandpaper is dry grinded, the broken will remain in the gap of the sand particles, so that the surface of the sandpaper will be brightened, so that it can not achieve its original effect, and the dry sandpaper is not so troublesome, the gap between its sand particles is larger, and the grinding of the broken dust is also larger, and it will fall down in the process of grinding due to the large gap, so it does not need to be used with water.

Generally, furniture factories use large abrasive belt machines, and select abrasive belts according to the requirements of the grinding surface, from No. 240 to No. 800, and the finest point is No. 1000, but it is rare to use such fine-grained abrasive belts. The smaller the number of abrasive belts, sandpapers, and grinding wheels, the larger the particle size.

The models of sandpaper are generally 30 (or 30 mesh), 60 (60 mesh), 120 (120 mesh), 180 (180 mesh), 240 (240 mesh).

Commonly used models are: No. 80, No. 100, No. 120, No. 150, No. 180, No. 220, No. 280, No. 320, No. 400, No. 500.

The above number means that the number refers to the thickness of the abrasive and the amount of abrasive per square inch, generally speaking, the higher the number, the finer the abrasive, and the more quantity. Mesh.

The higher it is, the more mesh holes there are, and the finer the abrasive.

There are two kinds of sandpaper commonly used in the furniture industry: wood sandpaper and water sandpaper, wood sandpaper is generally used to polish wood, and water sandpaper is used to polish paint.

Wood sandpaper is commonly used sanding paper, and water sandpaper is commonly used sanding paper.

Solid wood furniture. The sanding generally starts with coarse sandpaper, and as the effect smooths, you can transition to sandpaper step by step. Generally speaking, the specific type of sanding paper to use depends on the wood of the furniture and the sanding requirements.

If the requirements are relatively high, finally switch to 600 sandpaper. If the surface of the furniture is smoother, then you can omit the use of 100 sandpaper and directly use 240 sandpaper.

Grinding is a time-consuming and laborious job that requires a lot of patience.

Summary. 1. The substrate is treated, and sandpaper of No. 360 is used to polish it along the direction of the wood grain. 2. Brush the primer once to seal the board, and at the same time make it easier to remove the wood hair and wood thorns in the next step of grinding.

3. Sanding, use 360 sandpaper to polish along the direction of the wood grain. 4. Brush the primer 2-3 times, if the brush is polyester paint, brush 3 times, if the brush is nitro paint, brush 5-8 times, according to the solid content of nitro paint. The principle of brushing should be along the direction of the wood grain, not brushing horizontally, it is easy to see the brush marks.

5. Grinding, first use 360 sandpaper to polish along the direction of the wood grain, and then use sandpaper above 600 to polish. 6. Brush the topcoat 2-3 times.

1. The substrate is treated, and the sandpaper of No. 360 is polished in the direction of the high wood grain. 2. Brush the primer once to seal the board, and at the same time make it easier to remove the wood Qikai without hair thorns in the next step of grinding. 3. Sanding, use 360 sandpaper to polish along the direction of the wood grain.

4. Brush the primer 2-3 times, if the brush is polyester paint, then brush 3 times, if the brush is nitro paint, then brush 5-8 times, Sun Lu according to the solid content of nitro paint. The principle of brushing should be along the direction of the wood grain, not brushing horizontally, it is easy to see the brush marks. 5. Grinding, first use 360 sandpaper to polish along the direction of the wood grain, and then use sandpaper above 600 to polish.

6. Brush the topcoat 2-3 times.

1. Reasonable selection of sandpaper with different thicknesses, should not be too coarse, should not be too much with a model, polishing along the wood grain, never vertical and horizontal grinding, otherwise the wood grain will be torn, and the painted furniture will leave permanent flaws. 2. The corners and edges of the polished object should not be sand collapsed, and the action should be light, and the original round or square outline must be maintained. The decorative line must be kept straight and not bent, broken or deformed.

3. When grinding, generally hold down with four fingers and palms, and hold the sandpaper between your thumbs. When polishing furniture with a large area, you can pad square wood strips along the wood grain to grind the world. Brush while grinding, because the sand particles of sandpaper are easy to fall off, there is a possibility of grinding the wood grain when rubbing the surface of the object.

4. In addition, the dust and ash after grinding are easy to be embedded in the sideburns, so the dust must be brushed off with a dry brush at any time during grinding, and the surface is smooth and smooth. 5. When there are local bumps and scratches on the plate, the iron should be added with hot water first, and after heating, try to restore the original plane before sanding. If you press the sandpaper with your thumb, index finger and middle thumb, it is only limited to the sand part, and is not suitable for the workpiece with a large area of sand, otherwise the overall plane sand will be uneven, and you can see the concave phenomenon clearly after painting.

Using 360 mesh sandpaper will be smoother. If smoothness is not required, 280 mesh sandpaper can be used. Wood sanding and the choice of paint also have a greater relationship, and the quality of sanding will be directly related to its beauty.

2. What are the precautions for wood grinding?

1. When grinding wood, we should first pay attention to the problem of wood sanding, and at the same time, we should also determine the size of the workpiece.

2. Grinding wood selection grinder is also a very important link, it is recommended that you can choose a faster, first-class, simpler machine to grind, which can help you save a lot of time.

3. Before grinding, the wood should be selected, and the wood is mainly divided into two types: softwood and hardwood, which can prevent excessive sanding, which leads to the phenomenon that the wood cannot accept the finish.

4. When polishing wood, it is necessary to clean up the basic stains, and the requirements for oil stains are also higher, so it is necessary to do a good job in this aspect before polishing.

5. When using a grinding machine, the method is also very important, so it is recommended that you should find a professional master to polish, so as to make it look better visually.

6. In the process of grinding, it is recommended that you can use soft pads, so that the object can have a certain elasticity and avoid the phenomenon of scratching the wood.