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   The fast 9'' grinding wheel should not store grinding wheels in places that are easily exposed to moisture, freezing and high temperatures. Fast 9'' grinding wheel should avoid contact with oil. Resin grinding wheels should be used for one year. Grinding wheels exceeding the storage period must undergo strict inspection to confirm that there is no problem. Can be used.

1. The fast 9'' grinding wheel must be completely packaged for transportation and collision avoidance. It should not be exposed to moisture for a long time and cannot be contacted with alkalis;

2. The fast 9'' grinding wheel is stacked neatly in a flat manner, and cannot be inclined and pressed for a long time to prevent deformation;

3. Avoid the direct contact of the fast 9'' grinding wheel with the ground, it must be piled on the wooden board with moisture insulation, the height of the ground is 10-15cm, and the stacking height is not more than 1m;

4. Implement the principle of advanced first use to ensure the good use period of the product;

5. The fast 9'' grinding wheel should be re-tested for the strength and appearance after more than one year.

  The fast cheap metal grinding disc works mainly for grinding. The grinding disc is divided into many different types according to different classification methods. The resin grinding disc is one of them. The resin grinding disc is a grinding disc processed by a bonding agent. The effect of different grinding discs is different. The grinding disc should also be operated according to the corresponding operation method to ensure the working quality and efficiency of the fast cheap metal grinding disc. On the resin grinding disc, we will introduce the problems to be paid attention to during the use. Let's see it!

  1. Before using the resin fast cheap metal grinding disc, be sure to check the product for cracks, products and dub sounds. If it is, it cannot be used.

  2. The speed of the grinding disc must not exceed the specified safe working line speed.

  3. Do not use the end face grinding disc exclusively. Please do not work with the end face of the grinding disc.

  4. When the fast cheap metal grinding disc is working on the workpiece, please do not push the workpiece with the lever to increase the pressure on the grinding disc.

  5. Special dressing tools should be used for dressing the grinding disc. Operators must wear protective goggles when trimming.

  6. In the grinding process, the coolant should be used correctly; if the coolant is not used, there must be a dustproof device.

  7. Each piece of resin grinding disc is marked with high use and line speed. Before installing the machine, be sure to confirm the speed of the machine. Do not exceed the speed marked on the fast cheap metal grinding disc to ensure that the machine has perfect protection device, the center hole of the grinding disc and the center axis of the grinding disc. Must match, otherwise it cannot be used.

  8. The flanges on both sides of the fast cheap metal grinding disc must have the same shape and size. The flange diameter should meet the requirements, and there should be grooves on both sides.

  9. When installing and fixing, be sure to be tight and appropriate. After the installation is completed, start the machine to idle for about one minute. No abnormality can be used.

  10. Whether it is grinding or not, the pressure given should be uniform. It is strictly forbidden to collide with the workpiece when the grinding disc is adjusted and rotated. When entering the knife, it should be gradually progressive. When cutting large diameter workpieces, reduce the contact surface between the fast cheap metal grinding disc and the workpiece.

The diamond fast grinding wheel for stainless steel is super tough and has no elasticity at all. Its heat resistance is very good, but the production is complicated and the process cycle is long. Therefore, in the industry, the two kinds of grinding wheels are very different. The widely used diamond fast grinding wheel for stainless steel is in the concrete cutting operation, and the resin grinding wheel is very suitable for the grinding of some metal products.

Diamond resin fast grinding wheel for stainless steel, which is a kind of grinding wheel combined with resin and diamond. It is mainly mixed together, so that mixed cutting can increase its strength when cutting, and can effectively control in cutting and grinding some materials. Cutting effect, etc., is more suitable for grinding and cutting off some metal products.

The so-called resin is also a resin binder, and the fast grinding wheel for stainless steel manufactured by the resin is very high in strength, has a certain elasticity, and has low heat resistance so it cannot be used in some industries.

  The quality of diamond depressed grinding disc for metal is one of the important factors that can improve the processing productivity and surface quality of the products. Therefore, in high-end CNC machining centers, a high-efficiency composite tool can be used to replace multiple single-function tools, and it can automatically process complex-shaped workpieces according to the machining program, thus improving production efficiency. , surface quality and reduced production costs play a very good effect.

  It is reported that the use of advanced and efficient abrasive grinding disc tools can significantly improve the cutting efficiency, and the increase in tool costs is far less than the decline in production costs. At the same time, advanced and efficient tools can effectively reduce various benefits such as tool change time and product quality. Therefore, considering the comprehensive consideration, the use of advanced and efficient tools is very effective in improving processing efficiency and reducing the production cost. Research and development and application of new advanced and abrasive grinding disc tools are one of the development trends of machining in the future.

  Then, when grinding the high-efficiency tool, when the material, structure, and shape of the tool and the selection of the grinding machine are all determined, the diamond grinding disc becomes an important factor in determining the success or failure of the machining. The technical content of the depressed grinding disc for metal and the quality of the depressed grinding disc for metal also determine whether it can produce high-quality abrasive grinding disc tools that meet the design requirements.

  When it comes to diamond depressed grinding disc for metal, although the processing efficiency of ultra-high temperature resin bond diamond grinding discs is lower than that of METROX grinding discs, the bonding strength of diamond grinding discs is high, the production cycle is short, and the processing cost is low, especially when grinding the cutting edge of the tool. In the case of chipping, it can also be ground into various shaped grinding wheels according to the requirements of use. Therefore, diamond grinding discs are still widely used in production.

The main difference between the method for preparing the cemented carbide fast cheap metal grinding disc and the conventional method for preparing the grinding sheet is to use diamond powder and boron carbide as the abrasive.

According to Xia Borov, the process of preparing high quality metal grinding disc is as follows:

1) smoothing the surface with a diamond fast cheap metal grinding disc;

2) grinding on a cast iron plate with kerosene and boron carbide powder (particle size 5-15);

3) Grind twice with a rotating cast iron plate (n=800 rpm) with alcohol and diamond powder: the first diamond powder particle size is 3-5, and the second time is 1-3.

4) Polished with a rotating wooden high quality metal grinding disc with a full-fresh powder slurry, the diamond powder has a particle size of 1-2.

5) The diamond powder is finally polished with a fine felt to obtain a diamond powder having a particle size of 1.

The diamond powder slurry can be replaced by a solution of 5-7 ml of 20% caustic potash, 5-7 ml of 20% red blood salt solution, 40 g of reagent alumina, and 900 ml of distilled water.

Raw materials determine the quality of the grinding wheel

   The grinding effect of grinding wheel for stainless steel in industrial production is irreplaceable. The grinding wheel with good quality has better effect and longer life, and of course it is more favored by users. The quality of the grinding wheel is determined by the raw materials used to make the grinding wheel. Good raw materials can produce high quality grinding wheels, and vice versa. Below we will talk about the importance of raw materials for grinding wheels.

      1. Powder phenolic resin. For powdered phenolic resins, fluctuations in flow length, particle size, urotropine content and gelation time can affect the quality of grinding wheel for stainless steel. The flow of the powder resin is the most important performance index affecting the structure of the binder. The particle size affects the amount of the wetting agent, and the content of the volatiles is also important. In the actual grinding wheel production process, it is necessary to ensure the stability of the performance of each batch of powder resin, so as to ensure the quality of the grinding wheel.

      2. The stability of the technical indicators of the mesh. The mesh was originally applied to grinding wheel for stainless steel and the most important role was to increase the strength of the wheel. As the performance of the resin grinding wheel continues to increase, the role of the mesh in the resin grinding wheel is very important. Mainly manifested in: fluctuations in the strength of the grinding wheel, deformation of the slice, stratification of the grinding plate, and so on. The thickness of the mesh has an influence on the strength and viscosity of the grinding wheel and the cutting and grinding performance of the resin grinding wheel. In theory, under the condition that the grinding wheel production process is stable and allowed, the mesh with the higher amount of glue, the grinding wheel The higher the strength, the better the bonding performance and the more stable the cutting.

      3. Liquid phenolic resin. The fluctuation range of solid content, viscosity, gel time and water solubility of liquid phenolic resin has different degrees of influence. Therefore, the grinding wheel manufacturer must combine its own mixing, forming and hardening process characteristics according to its own product performance requirements. Develop a technical index and range of liquid resins suitable for you.

      The hardness of grinding wheel for stainless steel refers to the difficulty of the abrasive grains on the surface of the grinding wheel falling off under the action of grinding force. The hardness of the grinding wheel is soft, which means that the abrasive grains of the grinding wheel are easy to fall off, and the hardness of the grinding wheel is hard, indicating that the abrasive grains are difficult to fall off. The hardness of the grinding wheel and the hardness of the abrasive are two different concepts. The same kind of abrasive can be made into grinding wheels of different hardness, which is mainly determined by the performance and quantity of the bonding agent and the manufacturing process of the grinding wheel.

The significant difference between grinding and cutting is that grinding wheel for stainless steel has “self-sharpness”. Choosing the hardness of the grinding wheel is actually choosing the self-sharpness of the grinding wheel. I hope that the sharp grinding particles should not fall off too early, and should not be blunt or fall off.

Due to objective technical reasons, most of the domestic and foreign countries use traditional knife bowls for turning. In the process of processing it, 4.5 inches grinding wheel drives the quenched 45th steel thin-walled knife bowl to rotate at a higher linear velocity (300-400 m/min), and carries the cutter to remove the excess amount of the grinding wheel. 

Due to the high-speed rotation of the processed 4.5 inches grinding wheel and the knife bowl, the dust and noise in the processing are large, the cutting depth and the feed amount are small, so the processing efficiency is low and the comprehensive cost is high, and the operator is labor intensive.

If a large-grain diamond cutter is used, it is expensive, and because the diamond has low bending strength, it is easily damaged during cutting, and the cutting depth and the feed amount when cutting the 4.5 inches grinding wheel are small, and it is generally used only in finishing.

The quality of the grinding wheel has a direct impact on its grinding role. In order to play a good grinding role, it is necessary to select a high quality 9'' grinding wheel. To select a high quality grinding wheel, it is necessary to master the grinding wheel quality discrimination method. What is the quality discrimination method of resin grinding wheel? Now let's learn together to facilitate our purchase of a high quality grinding wheel.

1. See whether there are cracks inside the grinding wheel. Hand grinding wheel, with a wooden hammer tapping the grinding wheel piece to listen to its sound, no crack of the grinding wheel made a clear sound, cracked grinding wheel is hoarse sound, this can not be used.

2. See whether the brand is correct, whether it matches all the performance, shape and size of high quality 9'' grinding wheel.

Check the appearance of high quality grinding wheel directly. Observe with eyes whether the appearance of the wheel is damaged or whether there are cracks. The damaged wheel cannot be used. In addition, it is also required that the two ends of the resin high quality 9'' grinding wheel should be smooth without any obvious skew.

Everything is constantly evolving, even human beings are no exception, let alone other equipment or instruments, tools, resin grinding wheel is an important grinding and cutting tool in the manufacturing industry, of course, is also developed step by step. Today I want to talk about how the automatic molding technology of China long life grinding wheel developed.

As early as the early 80s of the last century, people in the industry explored and tried this technology. At that time, China imported an automatic molding press from abroad. This machine is quite compact in design. It differs from ordinary press only by adding a feed system.

Its working principle is: put the mixture into the hopper above, through vibration, fall on the conveyor belt, scrape flat, and then adjust the speed of transmission, eventually the material will be sent to the weighing hopper, weighing accurately and then put the material into the cavity.

The design principle seems to be effective in improving production efficiency. But there is a practical problem: no matter how to adjust, it always fails to achieve the ideal level of design. Because the slice China long life grinding wheel feeding is not like smelting corundum, silicon carbide, the raw material error cannot be too large, through conveyor belt feeding, to weigh accurately is not an easy thing, repeated adjustments, not only can not improve efficiency but waste a lot of time. Now we use a compromise method, bypassing the more difficult feed system, artificial feed, using a multi-station press, labor intensity is reduced, production efficiency can also be guaranteed.

The ideal feed system needs to be improved and developed. Once mastered, this technology will enable the production of thin-section China long life grinding wheels, like the production of coated abrasives, to be efficient, fast, fully mechanized and automated, bringing tremendous changes to the thin-section market.

Characteristics of grinding wheel grinding

The China long life grinding wheel used for grinding is composed of abrasive grains, binding agents and blowholes. If Pa, Pb and Pp are used to represent the percentage of abrasive grain, binder and pore volume to the volume of the grinding wheel respectively, then:

When making China long life grinding wheels, adjusting the percentage of abrasive particles, binders and pore volume, different performance grinding wheels will be obtained.

The growth mechanism of abrasive grains used in making grinding wheels is different, and the breaking methods are different, and the shape of abrasive grains is very unusual. In addition, the position distribution of abrasive grains in China long life grinding wheel is random due to the structure and manufacturing process of the grinding wheel. Therefore, compared with other machining methods, grinding has many unique characteristics.

Grinding wheels are commonly used abrasives in grinding, and the amount of grinding wheels is more than that of other abrasives. Let's share the testing method of fast 9'' grinding wheel turning strength.

1. when the grinding wheel is installed on the rotary tester, the flange shall be tightened. The flange size should be selected according to table 1^28.

2. if the diameter of the examined fast 9'' grinding wheel is larger than the diameter of the main shaft of the test machine, the flange with shaft sleeve is allowed.

3. Multiple grinding wheels with the same outer diameter and aperture are allowed to be installed symmetrically at both ends of the spindle on the same testing machine, but the installation quantity shall not exceed the allowable installation thickness and weight stipulated by the testing machine.

4. once multiple turns, each piece must be separated from the metal washer with the same diameter of the flange. The flange and metal washer must be smooth without deformation.

5. If there are non-standard fast 9'' grinding wheels or not included in the flange size of the grinding wheel, the use of flange size, should be based on the adjacent larger diameter grinding wheel to choose.

6. Inspected grinding wheel should first carry out sound (sound knock) check, sound normal can be installed before turning test, if there is mute or abnormal sound, can not be installed test.

7. When the fast 9'' grinding wheel is turning back, the rising speed can rise directly to the required number of revolutions to maintain no less than 308 time.

8. The radial runout of the spindle should not exceed 0.030101, and the direction of the end thread of the spindle should be opposite to that of the fast 9'' grinding wheel.

9. the strength of the worn wheel should be inspected again.

10. the speed of rotation is 1.6 times that of working speed.

Green silicon carbide 180*6*22mm metal grinding disc can be divided into flat grinding wheel, bevel grinding wheel, cylindrical grinding wheel, cup grinding wheel, disc grinding wheel, etc. According to the shape, it can be divided into ceramic grinding wheel, resin grinding wheel, rubber grinding wheel, metal grinding wheel and so on.

The characteristic parameters of 180*6*22mm metal grinding disc are abrasive, viscosity, hardness, binder, shape and size. Because grinding wheels usually work at high speeds, they should be tested before use for rotation (to ensure that the wheel does not break at working speed) and static balance (to prevent machine tool vibration when working). After grinding for a period of time, the grinding wheel should be trimmed to restore the grinding performance and the correct geometry.

It is forbidden to install the grinding machine in a place facing the nearby equipment and operators or where people often pass. A special grinding machine room should be set up in a general large workshop. When the grinding wheel is found to be unbalanced after being repaired or repaired, it should be repeated for static balance. When grinding the workpiece with a 180*6*22mm metal grinding disc machine, the operator should stand on the side of the grinding wheel and not operate on the front of the grinding wheel, so as to avoid grinding wheel flying out or grinding wheel breaking out and hurting people. In addition, if cracks are found in the local grinding wheel, it should immediately stop using, replacing the new grinding wheel, in order to avoid the 180*6*22mm metal grinding disc breakage injury accident.