Improvement measures for grinding process to prevent grinding cracks

A. choose suitable coolant and cooling mode.

B. Replacing domestic cooling oil with imported cooling oil with lower kinematic viscosity, and improving the cooling method, so that the cooling oil is always cooled in the grinding contact zone, and the oil temperature is controlled below 2315 C (air-conditioning air-cooling control), at the same time increasing the pressure of tool grinder oil pump to enhance the cooling effect in grinding.

C. Choosing suitable diamond depressed grinding disc for metal binder diamond grinding wheel due to good thermal conductivity, grinding force, grinding efficiency, mainly used for rough grooving process (grinding groove) grinding and grinding, the process can also choose high-temperature resin bonded diamond grinding wheel, but the wear is large; resin bonded diamond grinding wheel has good lubricity, grinding efficiency. Choose medium and soft resin bonded diamond grinding wheel or hardworking grinding wheel to keep the grinding wheel in the sharp state. It is mainly used for rough grinding and fine grinding of gear opening process (front and rear cutter face, end groove, offset back removal allowance, etc.).

Diamond wheel concentration selection 75% - 100%, metal bond grinding wheel size selection 120 - 140 mesh, resin bond depressed grinding disc for metal(RVD) size coarse grinding selection 80 - 120 mesh, fine grinding selection 200 - 240 mesh is more appropriate. If all the imported grinding wheels with good quality are selected, the grinding efficiency and surface roughness of abrasive grinding disc tools are higher than those of the domestic depressed grinding disc for metals.

Skinning grinding using ceramic CBN wheel

Compared with electroplated CBN wheels, the advantages of ceramic CBN grinding wheels are reflected in
A) easy to repair.
B) no need to repair.
C) the shape and accuracy of the fast 9'' grinding wheel can be guaranteed through dressing.
D) porous structure ensures good penetration of coolant and takes away chips.
E) longer life.
F) the matrix of the 230*6*22mm grinding wheel for stainless steel can be reused, only the new CBN abrasive layer can be replaced.

The key to skinning grinding with ceramic CBN wheel

Ceramic CBN grinding wheels used for peeling grinding require a high material removal rate, and at the same time, produce as little grinding heat as possible under the premise of achieving high efficiency processing to avoid a series of grinding problems such as burns and cracks. Therefore, the ceramic CBN grinding wheel is required to have a more open structure to ensure enough chip space, and at the same time, the passivated abrasive particles are required to break normally to ensure the sharpness of the grinding wheel made in China, so as to obtain high cutting performance. In addition, for peeling grinding, in the case of high-speed grinding, the chamfer area of the grinding wheel is easy to collapse, abrasive particles are easy to fall off, resulting in a low life of the grinding wheel, and will also affect the quality and accuracy of the workpiece surface.

Therefore, how to realize high-efficiency machining while ensuring the service life of the grinding wheel is the key to choose the ceramic CBN grinding wheel for peeling grinding. The traditional CBN grinding wheel with ceramic bond is difficult to ensure high porosity because of its characteristics of the bond system.

CBN grinding wheel, the latest technology of Sister technology, is based on the "glass-ceramic" technology. It can provide a very high bond strength, and is compatible with the mechanical, chemical and thermal conductivity of CBN abrasive.

Compared with the traditional ceramic bond process, it has more open structure and higher porosity; at the same time, it uses innovative technology to enhance the strength of the bonding bridge, so that the 230*6*22mm grinding wheel for stainless steel has the advantages of greater abrasive grinding force, higher hardness and wear resistance, greatly improving the service life of the fast 9'' grinding wheel, which is very suitable for peeling grinding. Chipping;

Higher grinding efficiency and better consistent surface quality of workpiece are very suitable for high precision and high efficiency peeling grinding.

White corundum grinding wheel

White corundum grinding wheel is made of industrial alumina oxide as the main raw material and is smelted in electric arc furnace.

The main mineral a-ALO is more than 98%. Its hardness is similar to brown corundum, but its toughness is lower, and its cutting performance is higher than brown corundum.

Production process:
White corundum Long life grinding wheel is one of the most important grinding tools in grinding. The white corundum grinding wheel is a porous body made by adding binder into the abrasive, then compacted, dried and roasted. Because of the different abrasive, binder and manufacturing technology, the characteristics of grinding wheels vary greatly, so the grinding quality, productivity and economy have an important impact. The characteristics of grinding wheel are mainly determined by abrasive, strength, binder, hardness, microstructure, shape and size and other factors.

According to the abrasive used, it can be divided into ordinary abrasive (corundum and silicon carbide) grinding wheel.

According to the shape can be divided into flat grinding wheel, bevel grinding wheel, cylindrical grinding wheel, cup grinding wheel, dish grinding wheel, bowl grinding wheel, concave grinding wheel, conical grinding wheel, etc. According to the binder can be divided into ceramic grinding wheel, resin grinding wheel, rubber grinding wheel, metal grinding wheel, etc. The characteristic parameters of grinding wheel are abrasive, particle size, hardness, binder, shape and size. Since grinding wheels usually work at high speeds, they should be tested before use for rotation (to ensure that the wheel does not break at the highest operating 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.
Shape feature

According to the structure of the machine tool and the needs of grinding, the grinding wheel is made into various shapes and sizes. The outer diameter of the grinding wheel should be selected as large as possible to increase the circumferential speed of the grinding wheel, which is beneficial to improve the grinding productivity and surface roughness. In addition, under the condition of machine stiffness and power permitting, if fast working grinding wheel with large width is selected, the productivity can be improved and the roughness can be reduced. However, in grinding materials with high thermal sensitivity, the width of the grinding wheel should be reduced appropriately in order to avoid burns and cracks on the surface of the workpiece.

If you are interested in grinding wheels, I would like to ask you if you need a China grinding wheel supplier. We are the manufacturers of China long life grinding wheel.

Notes for usage of fast grinding wheel for stainless steel

Notes for usage of fast grinding wheel for stainless steel:

1. Check the grinding wheel made in China carefully before installing the grinding wheel to confirm whether there are deformation, cracks, cracks, etc.
2. when the flange is too small or the accuracy is poor, it is easy to damage the cutting wheel. Please use it after improvement.
3. when high quality 9''grinding wheel has the rotation direction, it must be consistent with the turning direction of the machine tool. On the contrary, cutting is not sharp, and it is difficult to achieve the performance of cutting wheels.
4. If the cutting grinding wheel does not match the workpiece, abnormal wear and tear, poor sharpness, abnormal heating and so on are easy to occur.
5. during the process of cutting, if abnormal, stop immediately.
6. grinding wheels are prohibited from cutting by hand, but not by hand or body contact.
7. Fast 9''grinding wheel is strictly forbidden to be used in operations other than grooving or cutting to avoid abnormalities due to uneven forces.
8. when cutting is not sharp, the grinding wheel must be trimmed. If it continues to use, it will overheat and overload and damage the wheel.

How to tell if there are wrinkles in the newly purchased fast cheap metal grinding disc?

How to tell if there are wrinkles in the newly purchased fast cheap metal grinding disc?

1.High quality metal grinding disc is manufactured with instructions, which are detailed and should be viewed carefully.

2.Before using 180 * 6 * 22mm metal grinding disc, hang and tap with mallet. The sound should be clear and metallic! If the voice is stuffy, it will be dumb. Usually it is a collision in the transportation. It is absolutely not allowed to use.

3.conditional, of course, the best high-speed rotation experiment! Generally in the working speed of 1.6 times 1 minutes, not broken, proved to be eligible, you can use!