Stainless Steel Grinding Disc PM Sintered Parts

Product Introduction

Stainless steel is the abbreviation of stainless and acid-resistant steel. The steel grades that are resistant to weak corrosive media such as air, steam, and water, or have stainless properties are called stainless steel; The steel grade is called acid-resistant steel.

Due to the difference in chemical composition of the two, their corrosion resistance is different. Ordinary stainless steel is generally not resistant to chemical medium corrosion, while acid-resistant steel is generally stainless. The term "stainless steel" does not simply refer to one kind of stainless steel, but refers to more than one hundred kinds of industrial stainless steel, and each developed stainless steel has good performance in its specific application field.

The stainless steel grinding disc adopts imported stainless steel with hardness up to HRC50-55. Stainless steel corrosion performance is good.

Application

Due to the smooth and firm surface of stainless steel products, which are not easy to accumulate dirt and are easy to clean, Stainless steel grinding disc PM sintered parts are widely used in building material decoration, food processing, catering, brewing, and chemical industries.

• Building Decoration

In the field of architectural decoration, stainless steel products are used in halls, elevator decorative panels, etc. Stainless steel grinding disc PM sintered parts can be kept clean for a long time because the surface of stainless steel products is smooth after forming, and it is not easy to accumulate dirt. However, if you do not pay attention to cleaning, the deposition of dirt will cause stainless steel to rust or even cause corrosion. In addition, the polishing process used in stainless steel products is also very important for the selection of stainless steel products. For example, in the spacious hall, stainless steel is the most commonly used material for elevator decorative panels. Although the fingerprints on the surface can be wiped off, it affects the appearance. A textured surface is required to prevent fingerprints.

• Sanitary ware

In food processing, catering, brewing, and other industrial fields, stainless steel is also widely used. Because it is easy to clean every day, it is also resistant to chemical cleaning agents, and it is not easy to breed bacteria. Tests have shown that the performance in this respect is the same as that of glass and ceramics.

• Chemical industry

In the chemical industry, stainless steel products are widely used for their good chemical stability and firmness and can be used for containers, reaction vessels, etc.

Surface Technology

Smooth surface is an important feature of stainless steel products, and it is of great significance to maintain the normal function of stainless steel products. Therefore, the polishing process of stainless steel products is very important. According to the manufacturing steps, the polishing process of stainless steel products can be divided into two steps: grinding and polishing.

• Grinding

The main goal of grinding stainless steel welded parts is to remove solder joints and achieve a workpiece with a surface roughness of R10um in preparation for light emission.

The grinding part can be summarized as follows:

Three processes: coarse grinding, semi-fine grinding, fine grinding

Three faces: two sides and one edge

nine polishers

Twenty-seven regulating bodies.

The details are as follows:

1. Carry out visual inspection on the workpieces transferred to the polishing process in the previous stage, such as whether there are missing welds in the welds, weld penetration, uneven depth of solder joints, too far away from the joints, local depressions, uneven butt joints, and deep scratches Marks, bruises, severe deformation and other defects that cannot be remedied in this process, if there are above defects, it should be returned to the previous process for repair. If there are no above-mentioned defects, enter this polishing process.

2. Coarse grinding, use 600# abrasive belt to grind the workpiece back and forth on three sides. The goal of this process is to remove the solder joints left by the welding of the workpiece and the bruises that occurred in the previous process, so as to achieve the fillet of the weld Preliminary molding, basically no large scratches or bruises on the horizontal and vertical surfaces. After this step, the surface roughness of the workpiece should be able to reach R0.8mm. Pay attention to the inclination angle of the belt machine and control the pressure of the belt machine on the workpiece during the polishing process. Generally speaking, it is more moderate to be in a straight line with the thrown surface!

3. Semi-fine grinding, use 800# abrasive belt to grind the three sides of the workpiece according to the previous method of grinding the workpiece back and forth, mainly to correct the seams that appeared in the previous process and to further finely grind the marks produced after rough grinding , The marks left by the previous process should be repeatedly ground to achieve no scratches on the surface of the workpiece and basically brighten. The surface roughness of this process should be able to reach R0.4mm. (Be careful not to create new scratches and bruises in this process, because such defects cannot be repaired in subsequent processes.)

4. For fine grinding, the abrasive belt of 1000# is mainly used to correct and grind the fine lines that appeared in the previous process, and the grinding method is the same as above. The goal of this process is that the seam between the grinding part and the unground part of the workpiece will basically disappear, and the surface of the workpiece will be brighter. The workpiece after grinding through this process should be basically close to the mirror surface effect, and the surface roughness of the workpiece should be able to reach R0. 1mm

5. Instructions for replacing abrasive belts: Generally speaking, 600# abrasive belts can polish 6-8 workpieces with a length of 1500mm, 800# abrasive belts can polish 4-6 workpieces, and 1000# abrasive belts can Polishing 1-2 pieces of the workpiece, the specific situation also needs to be related to the welding spot of the workpiece, the pressure used for polishing, and the method of grinding. In addition, it is necessary to pay attention to the replacement of the abrasive belt to ensure that the abrasive belt can rotate smoothly on the sponge wheel to achieve the purpose of evenly grinding the workpiece.

• Sold out

The main purpose of the light emitting part is to mirror the polished stainless steel to achieve the purpose of mirror surface. In summary, the process includes:

Two processes: waxing, polishing

Two motors, two wool wheels, daqing wax, cloth

The details are as follows:

1. Visually observe the welded parts entering this process from the previous process, and check to confirm whether there is any missing grinding to 1000#, all solder joints are not completely ground, there are traces of rough grinding, serious damage to the protective film, excessive grinding, excessive fillet, Severe grinding at both ends, uneven grinding, and some places with different depths, etc. There are problems that cannot be repaired in the light-emitting stage in various polishing and polishing stages. If there are such problems, they need to be returned to re-polishing or repaired. (In this process, the bruises, scratches, and large scratches that occur during grinding cannot be repaired, but very small fine lines can be repaired, such as the relatively small fine lines produced by 1000# grinding. But it is very troublesome)

2. Mirror surface

Use the high-speed motor to drive the wool wheel (available on the market), and use the Daqing wax to perform mirror polishing in the same way as the previous polishing method. The main purpose of this process is to mirror polish the workpiece after the previous polishing processes. Not further grinding. Be careful not to rub the polishing wax on the covering film on the surface of the workpiece during the operation of this step, and be careful not to damage the covering film.

3. Polish

This process is the last process of mirror polishing. Use a clean cotton wheel to rub the surface of the workpiece after the mirror surface, and clean and polish the workpiece after all the previous processes are completed. The goal of this process is that no welding marks can be distinguished on the surface of the workpiece, and the waxed and polished workpiece is polished so that the brightness reaches a mirror reflection height of 8K, and there is almost no difference between the polished part of the workpiece and the unpolished part. Achieve a full mirror effect.

Metal Injection Molding Process

Detection Systems